Microwavable construct with contoured heating surface

ES 2 556 592 T3

DESCRIPTION

Microwave safe manufactured product with contoured heating surface

TECHNICAL SECTOR

The present invention relates to various materials, packages, manufactured products and systems for heating or cooking a food item in a microwave oven. In particular, the invention relates to various materials, packages, manufactured products and systems for heating or cooking a food item in a microwave oven, in which the food item has an irregular shape.

BACKGROUND

Microwave ovens provide a convenient means for heating various food items, including many potato-based and batter-based prepared frozen food items. Unfortunately, in many cases, such items tend to bow, bulge, or otherwise deform during the freezing process instead of remaining in their original shape. As a result, many currently available microwave energy interactive packages cannot provide sufficient contact with the surface of the food item to provide the desired balance of complete heating with a browned, golden outer surface. Therefore, a need exists for improved materials and packages that provide the desired degree of heating, browning and / or browning of a food item having a contoured or uneven surface.

Document US 4831224 discloses a microwave-safe tray according to the preamble of claim 1.

FEATURES

According to one aspect, the present invention is generally directed to various blanks for forming a tray, container, system, or other manufactured product (jointly manufactured products) interactive with microwave energy, to various manufactured products. formed therefrom, to various manufacturing procedures of said manufactured products and to various heating procedures, browning and / or browning of a food item that has a contoured or uneven surface in a microwave oven.

The various products manufactured may include one or more features that enhance microwave heating, browning and / or toasting of a food item. The various products manufactured may also include one or more features that conform to the contours of a food item that has an irregular surface, for example a bulging or arched surface. For example, the various manufactured products may include one or more raised or raised portions that bring microwave enhancing characteristics in close proximity to the surface of the food item. In some cases, said raised portions may be shaped, dimensioned and / or configured to create the visual appearance of grid markings. In addition, the various products manufactured may include one or more features that allow moisture generated during the heating process to vent away from the food item, thereby enhancing browning and / or browning. For example, in some examples, the manufactured product may include one or more ventilation channels that extend through at least a portion of the raised portions.

The elevation arrangements, the spacing between the raised parts, the height of the elevations, and the width and depth of the spaces between them can be selected based on the type of food item to be heated and the desired cooking effect. For example, more or less raised parts can be arranged, depending, for example, on the degree of unevenness of the surface of the food item to be browned and / or toasted, the moisture content of the food item, the thickness of the food item, the characteristics of the food article (eg, fat content) and the surface area occupied by the food article.

Furthermore, the manufactured product may include one or more recessed parts (viewed from one side of the manufactured product) corresponding to the raised part on the other side of the manufactured product. When said recesses are at the bottom of a manufactured product that, in use, is located next to the bottom of a microwave oven, said recesses can provide an insulating air gap that reduces heat loss from the interactive element. with microwave energy to the floor of the microwave oven, and further enhance heating, browning and / or toasting of the food item.

The raised parts can be formed using any suitable procedure, process or technique. In one aspect, the contours can be formed using a mechanical and / or thermal pressing process. In such a process, the blank is typically cut to the desired size and shape, and placed in a mold or forming die with male and female sides. The male and female sides of the die meet, thereby applying pressure to the blank and deforming the blank to create the desired contour arrangement.

ES 2 556 592 T3

In one aspect, a tray for heating, browning and / or toasting a food item in a microwave oven comprises a platform that extends upwardly from a substantially flat base. The platform has a central part and a peripheral part. The central part is raised with respect to the peripheral part and the base, and the peripheral part extends obliquely and outwardly from the central part to the base. A microwave energy interactive element may be arranged at least above a portion of the central part. The microwave energy interactive element can also be arranged at least over a part of the peripheral area. In one example, the microwave energy interactive element comprises a layer of microwave energy interactive material that transforms at least a portion of the incident microwave energy into thermal energy. For example, the microwave energy interactive element may comprise a susceptor.

If desired, the platform can be contoured to fit the shape of a food item. For example, each of the central portion and the peripheral portion of the platform may independently be substantially curvilinear in shape, or may be substantially flat or flattened in shape. In one example, the platform may have a curved surface, for example, a substantially domed surface.

If desired, the tray may include at least one ventilation channel that extends, at least partially, through the platform. In one example, the channel extends through the peripheral portion. In another example, the tray includes a first center line that extends in a first direction and a second center line that extends in a second direction, substantially perpendicular to the first center line, and the channel extends in the first substantially perpendicular direction. to the second center line. In another example, the tray includes a series of channels, at least some of which are substantially parallel to each other. In yet another example, the tray may include at least one channel that is substantially perpendicular to at least one other channel.

In a variant, one or more break lines extend between points along the peripheral edge of the base. In one example, the peripheral edge includes a curvilinear portion and the points are located along the curvilinear portion of the peripheral edge.

In another variant, the tray may include a wall that extends substantially upward from the base along at least a portion of the periphery.

According to another aspect of the invention, a tray for heating, browning and / or toasting a food item in a microwave oven comprises a substantially flat base having a peripheral edge, a platform extending upward from the base in the interior of the periphery, and an interactive element with microwave energy that is arranged on top of at least a part of the platform. The base includes a tear line that extends between a pair of points along the peripheral edge.

In a variant, the pair of points is located along a curvilinear part of the peripheral edge. In another variant, the base includes a second break line that extends between a second pair of points along the peripheral edge. The first break line and the second break line can be substantially parallel to each other. The first tear line and the second tear line may define respective handles for the tray. The handles may be adapted to be folded up towards the platform, along the respective first and second tear lines. The folded up handles can also be used to define a guide edge for handling the tray during various manufacturing and post-manufacturing processes.

Additional aspects, features, and advantages of the present invention will be apparent from the following description and accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The description refers to the accompanying drawings, in which similar reference characters refer to similar parts throughout the drawings, and in which:

Figure 1A is a schematic perspective view of an exemplary tray having a generally circular shape;

Figure 1B is a schematic top plan view of the tray of Figure 1A;

Figure 1C is a schematic sectional view of the tray of Figure 1B taken along a line -1C-1C-;

Figure 1D is a schematic sectional view of the tray of Figure 1B taken along a line

-1D-1D-;

Figure 1E is a schematic top plan view of the tray of Figures 1A to 1D including an interactive element with microwave energy;

Figure 2 is a schematic top plan view of another exemplary tray, similar to the tray of Figures 1A through 1D, including a microwave energy interactive element having a geometric patterned configuration;

Figure 3 is a schematic top plan view of yet another exemplary tray, similar to the tray of Figures 1A to 1D, which includes an interactive element with microwave energy that has a configuration with geometric figures ;

Figure 4 is a schematic top plan view of yet another exemplary tray, similar to the tray of Figures 1A to 1D, which includes an interactive element with microwave energy that has a configuration with geometric figures. ;

Figure 5 is a schematic top plan view of yet another exemplary tray, similar to the tray of Figures 1A through 1E, including a series of elongated openings;

Figure 6A is a schematic perspective view of another exemplary tray including a series of channels;

Figure 6B is a schematic top plan view of the tray of Figure 6A;

Figure 6C is a schematic sectional view of the tray in Figure 6B taken along a line -6C-6C-;

Figure 6D is a schematic sectional view of the tray of Figure 6B taken along a line -6D-6D-;

Figure 7A is a schematic perspective view of an exemplary variant of the tray of Figures 6A to 6D, including a series of side walls;

Figure 7B is a schematic top plan view of the tray of Figure 7A;

Figure 7C is a schematic sectional view of the tray of Figure 7B taken along a line -7C-7C-;

Figure 7D is a schematic sectional view of the tray of Figure 7B taken along a line -7D-7D-;

Figure 8A is a schematic perspective view of an exemplary variant of the tray of Figures 6A through 6D, including additional channels;

Figure 8B is a schematic top plan view of the tray of Figure 8A;

Figure 8C is a schematic sectional view of the tray of Figure 8B taken along a line -8C-8C-;

Figure 8D is a schematic sectional view of the tray of Figure 8B taken along a line -8D-8D-;

Figure 9A is a schematic perspective view of an exemplary variant of the tray of Figures 8A to 8D, including obliquely oriented channels;

Figure 9B is a schematic top plan view of the tray of Figure 9A;

<td>the figure</td><td>9C</td><td>it is</td><td>a</td><td>sight</td><td>schematic,</td><td>on</td><td>section,</td><td>from</td><td>the</td><td>tray</td><td>from</td><td>the figure</td><td>9B taken</td><td>to</td><td>it</td><td>long</td><td>from</td><td>A line</td>

<td>-9C-9C-;</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td>

<td>the figure</td><td>9D</td><td>it is</td><td>a</td><td>sight</td><td>schematic,</td><td>on</td><td>section,</td><td>from</td><td>the</td><td>tray</td><td>from</td><td>the figure</td><td>9B taken</td><td>to</td><td>it</td><td>long</td><td>from</td><td>A line</td>

<td>-9D-9D-;</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td>

<td>the figure</td><td>9E</td><td>it is</td><td>a</td><td>sight</td><td>schematic,</td><td>on</td><td>section,</td><td>from</td><td>the</td><td>tray</td><td>from</td><td>the figure</td><td>9B taken</td><td>to</td><td>it</td><td>long</td><td>from</td><td>A line</td>

-9E-9E-;

Figure 10A is a schematic perspective view of an exemplary variant of the tray of Figures 8A to 8D, including a substantially flat heating surface;

Figure 10B is a schematic top plan view of the tray of Figure 10A;

Figure 10C is a schematic sectional view of the tray of Figure 10B taken along a line -10C-10C-;

Figure 10D is a schematic sectional view of the tray of Figure 10B taken along a line -10D-10D-;

Figure 11A is a schematic perspective view of another exemplary tray having a generally square shape;

Figure 11B is a schematic top plan view of the tray of Figure 11A;

Figure 11C is a schematic sectional view of the tray of Figure 11B taken along a line -11C-11C-;

Figure 11D is a schematic sectional view of the tray of Figure 11B taken along a line -11D-11D-;

Figure 11E is a schematic sectional view of the tray of Figure 11B taken along a line -11E-11E-;

Figure 12A is a schematic perspective view of a variant of the tray of Figures 11A to 11E, including a series of channels;

Figure 12B is a schematic top plan view of the tray of Figure 12A;

Figure 12C is a schematic sectional view of the tray of Figure 12B taken along a line -12C-12C-;

Figure 12D is a schematic sectional view of the tray of Figure 12B taken along a line -12D-12D-;

Figure 13A is a schematic perspective view of a variant of the tray of Figures 11A to 11E, including a series of raised parts that together act as a platform;

Figure 13B is a schematic top plan view of the tray of Figure 13A;

Figure 14A is a schematic perspective view of another exemplary tray having a generally triangular shape;

Figure 14B is a schematic top plan view of the tray of Figure 14A;

Figure 14C is a schematic sectional view of the tray of Figure 14B taken along a line -14C-14C-;

Figure 14D is a schematic sectional view of the tray of Figure 14B taken along a line -14D-14D-;

Figure 14E is a schematic sectional view of the tray of Figure 14B taken along a line -14E-14E-;

Figure 15A is a schematic perspective view of an exemplary variant of the tray of Figures 14A through 14D, including a series of channels;

Figure 15B is a schematic top plan view of the tray of Figure 15A;

Figure 15C is a schematic sectional view of the tray of Figure 15B taken along a line -15C-15C-;

Figure 15D is a schematic sectional view of the tray of Figure 15B taken along a line

-15D-15D-;

Figure 15E is a schematic sectional view of the tray of Figure 15B taken along a line -15E-15E-;

Figure 15F is a schematic sectional view of the tray of Figure 15B taken along a line -15F-15F-;

Figure 16A is a schematic perspective view of another exemplary variant of the tray of Figures 14A through 14D, including a series of channels;

Figure 16B is a schematic top plan view of the tray of Figure 16A;

Figure 16C is a schematic sectional view of the tray of Figure 16B taken along a line -16C-16C-;

Figure 16D is a schematic sectional view of the tray of Figure 16B taken along a line -16D-16D-;

Figure 16E is a schematic sectional view of the tray of Figure 16B taken along a line -16E-16E-;

Figure 16F is a schematic sectional view of the tray of Figure 16B taken along a line -16F-16F-;

Figure 17A is a schematic perspective view of another exemplary tray having some circular sector shape;

Figure 17B is a top schematic plan view of the tray of Figure 17A;

Figure 17C is a schematic sectional view of the tray of Figure 17B taken along a line -17C-17C-;

Figure 17D is a schematic sectional view of the tray of Figure 17B taken along a line -17D-17D-;

Figure 17E is a schematic end view of the tray of Figure 17B, viewed along a line -17E-17E-;

Figure 18A is a schematic perspective view of an exemplary variant of the tray of Figures 17A through 17E, including additional channels;

Figure 18B is a schematic top plan view of the tray of Figure 18A;

Figure 18C is a schematic sectional view of the tray of Figure 18B taken along a line -18C-18C-;

Figure 18D is a schematic sectional view of the tray of Figure 18B taken along a line -18D-18D-;

Figure 18E is a schematic end view of the tray of Figure 18B, viewed along a line -18E-18E-;

Figure 19A is a schematic perspective view of an exemplary variant of the tray of Figures 17A to 17E, including additional channels;

Figure 19B is a schematic top plan view of the tray of Figure 19A;

Figure 19C is a schematic sectional view of the tray of Figure 19B taken along a line -19C-19C-;

Figure 19D is a schematic sectional view of the tray of Figure 19B taken along a line -19D-19D-;

Figure 19E is a schematic sectional view of the tray of Figure 19B taken along a line

-19E-19E-;

Figure 20A is a schematic perspective view of another exemplary tray in accordance with various aspects of the invention, including a series of channels;

Figure 20B is a schematic top plan view of the tray of Figure 20A;

Figure 20C is a schematic sectional view of the tray of Figure 20B taken along a line -20C-20C-.

Figure 20D is a schematic sectional view of the tray of Figure 20B taken along a line -20D-20D-;

Figure 21A is a schematic perspective view of a variant of the tray of Figures 20A to 20D, according to various aspects of the invention;

Figure 21B is a top schematic plan view of the tray of Figure 21A;

Figure 21C is a schematic sectional view of the tray of Figure 21B taken along a line -21C-21C-;

Figure 21D is a schematic sectional view of the tray of Figure 21B taken along a line -21D-21D-;

Figure 22A is a schematic perspective view of another exemplary tray, in accordance with various aspects of the invention, which is generally circular in shape and includes break lines defining a pair of opposing handles;

Figure 22 is a schematic top plan view of the tray of Figure 22A;

Figure 22C is a schematic sectional view of the tray of Figure 22B taken along a line -22C-22C-;

Figure 22D is a schematic sectional view of the tray of Figure 22B taken along a line -22D-22D-;

Figure 22E is a schematic sectional view of the tray of Figure 22B taken along a line -22D-22D-, with the handles folded in a partially vertical configuration;

Figure 23 schematically shows various points on a slice of bread, where the degree of browning has been measured for heated bread pieces using a commercially available susceptor disk and for heated bread pieces using a tray according to the invention.

DESCRIPTION

Various aspects of the invention can be shown with reference to the figures. For simplicity, similar numerals may have been used to describe similar features. It will be understood that when a series of similar features are depicted, not all such features are necessarily marked in each figure. Additionally, it will be understood that when a specific reference character is used to indicate a dimension in more than one figure or exemplary embodiment, said reference character can represent any numerical value, and the value can vary for each embodiment by way of example. For example, -L1- can be used to indicate a specific length in multiple figures, but each can have a different numerical value in a given embodiment. Furthermore, while several different aspects, exemplary embodiments and embodiments of the various inventions are disclosed, numerous interrelationships between aspects, embodiments and embodiments of the inventions, combinations thereof, and modifications are contemplated herein.

Figures 1A-1D represent a product manufactured by way of example, in this example, a disk or a tray 100. The tray 100 has a substantially circular shape, and is substantially symmetrical along a longitudinal center line -CL- and a transverse center line -CT-. However, many other shapes and configurations are contemplated herein. For example, the tray can have a triangular, rectangular, square, hexagonal or any other, regular and irregular shape. Similarly, the tray may not include lines of symmetry, a single line of symmetry, or multiple lines of symmetry.

The tray -100- includes a somewhat flat peripheral base or rim -102-, and a pair of platforms or facing raised portions -104- that serve as surfaces to receive one or more food items (not shown) thereon. The raised portions -104- are separated by a recess -106- which is located substantially within the same plane as the rim -102-. In this example, the recess -106- is located along the center line

ES 2 556 592 T3 transverse -CT-. However, the recess -106- can have any other suitable shape or position, as required or desired for a specific application.

Referring also to Figures 1A-1D, each platform 104 has a substantially semicircular shape, suitable for receiving, for example, a half panini or other sandwich thereon. As best seen in Figures 1A and 1B, each platform -104- includes an upper face or surface -108- (also called the highest surface or heating surface), a somewhat vertical inner face -110-, an outer face something vertical -112- and a pair of facing corner faces -114-. It will be understood that, in this and other aspects of the invention, the various faces -108-, -110-, -112- and -114- are described as individual surfaces or faces only for simplicity and ease of description, and that said faces or surfaces can be substantially continuous and lack a defined boundary between them. Furthermore, it will be understood that the platform can have any desired shape, and that many other regular and irregular shapes are contemplated herein.

In this example, the inner face -110- and the outer face -112- of each platform -104- extend obliquely, inclining outwards and downwards, and reducing their height from the upper face -108- towards the recess -106 - or the flange -102-, respectively. Similarly, the corner faces -114- slope outward and downward from the top face -108- towards the recess -106- and / or the flange -102-, such that the corner face -114 has a shape generally rounded or convex. However, in this and other aspects, it is contemplated that the various faces defining the platform in accordance with the invention may be substantially vertical, or may taper inward and downward from the platform, as required or desired for a specific application.

If desired, one or both platforms 104 may be contoured to generally conform to the shape of a food item. In this example, each platform -104- has a uniform height -H1- seen along the longitudinal center line -CL- of the tray -100-, as shown in Figure 1C, and is arched or crowned when viewed. along the inner face -110- of the platform -104-, as shown in figure 1D, in such a way that the platform -104- and, therefore, the upper surface -108-, decrease their height, from the longitudinal center line -CL- towards each of the corner faces -114-. Said tray 100 may be particularly suitable for use with food items having a somewhat arched shape, such as frozen dough based food items (eg sandwiches, pizzas, etc.).

The tray -100- can be characterized as having various heights, for example -H1-, lengths, for example -L1-, -L2-, -L3-, -L4-, -L5-, -L6-, - L7- and -L8-, and radii of curvature, for example, -R1-, -R2- and -R3-, each of which may vary for a specific application. The dimensions of each platform -104- may be substantially identical, such that the tray -100- is substantially symmetrical on each side of the longitudinal center line -CL-, or they may differ, such that the tray -100- is not symmetric on each side of the longitudinal center line -CL-. Similarly, the dimensions of each platform -104- may be substantially identical, such that the tray -100- is substantially symmetrical on each side of the transverse center line -CT-, or they may differ, such that the tray - 100- is not symmetric on each side of the transverse center line -CT-.

If desired, any of the various trays of the invention may include features that modify the effect of microwave energy during heating or cooking of the food item. For example, any of the trays can be formed, at least partially, from one or more elements that are interactive with microwave energy (sometimes called microwave interactive elements) that promote browning and / or browning. of a specific area of ​​the food item, protect a specific area of ​​the food item from microwave energy to prevent overcooking it, or they transmit microwave energy to or away from a specific area of ​​the food item. Each microwave interactive element comprises one or more microwave energy interactive materials or segments arranged in a specific configuration to absorb microwave energy, transmit microwave energy, reflect microwave energy, or direct microwave energy, as required or desired for a specific microwave heating fabricated product and food item.

The microwave interactive element may be supported on a transparent or microwave inactive substrate to facilitate handling and / or prevent contact between the microwave interactive material and the food item, as will be described in greater detail below. For convenience and not limitation, and while it is understood that a microwave interactive element supported on a microwave transparent substrate includes both microwave interactive and microwave inactive elements or components, such structures may be referred to as herein as microwave interactive laminar elements.

In one example, the microwave interactive element may comprise a thin layer of microwave energy interactive material (generally, less than about 100 angstroms thick, for example, from about 60 to about 100 angstroms thick) that tends to to absorb at least part of the incident microwave energy and transform it into thermal energy (i.e.

ES 2 556 592 T3 heat) at the interface with the food item. Such elements are often used to promote browning and / or browning of the surface of a food item. When supported on a film or other substrate, said element can be called a susceptor film or simply a susceptor.

For example, as shown schematically in figure 1E by dotting, an interactive element -116- with microwave energy, for example, a susceptor, can be arranged on top of all or part of each platform -104 -, including all or part of the upper surface -108-, the recess -106-, the inner face -110- and / or the corner faces -114- of one or both platforms -104-. A susceptor or other element that is interactive with microwave energy can also be arranged on top of all or part of the outer face -112-.

When the susceptor is supported on a polymer film, it will be understood that the polymer film substrate may be disposed on top of additional portions or substantially the entire tray, with the microwave energy interactive element (i.e., the susceptor) located between the substrate and the specific component of the tray in the desired position for heating, browning and / or toasting the food item. Thus, a tray according to the invention can be pressed or otherwise formed from a multilayer structure comprising the susceptor film bonded to the material used to form the tray.

To use the tray, one or more food items -F- (shown schematically in dotted lines in Figure 1E) are usually placed on each platform and placed in a microwave oven (not shown). In a specific example, the food item is a sandwich that has been divided into two sections, each of which includes a piece of bread and one or more ingredients in an open-sided configuration. In another specific example, the food item is a pizza, which has been divided into two separate pieces, slices or parts, or arranged as such. In yet another example, the food item is a single item, eg, a pizza, that has not been divided into separate pieces, slices, or parts. In such an example, the pizza can be arranged on top of both platforms and the recess between them. Alternatively, it is contemplated that the tray may include a single platform that is generally circular in shape to accommodate the bulging formation of the circular pizza. In this case, the platform may have an overall bulging configuration, such that the height of the platform decreases in any direction from the center of the platform outwards, towards the base of the tray (for example, see figures 20A to 21D). Also alternatively, it is contemplated that the tray may include a series of platforms, each of which is intended to receive one or more of a series of articles, or one or more parts of a series of articles, to be heated.

In any case, the food items are placed on the heating surface -108- of each platform -104- with the surface to be browned and / or toasted, for example, the bread or the pizza crust, next to the tray - 100-. The contoured heating surface -108- of the platform -104- is generally adapted to the contoured surface of the food item, which is often prone to wrinkling, during the freezing process, and brings the susceptor in close proximity to the surface. of the food item to be browned and / or toasted.

It should be noted that, with any of the numerous trays contemplated herein, the food item (s) may be slightly larger than the respective platform, in this example, the platform -104-, and therefore, the food may spread somewhat beyond the limits of the heating surface, in this example, the upper face -108-. When the food item is thawed, any of said portions of the food item that extend beyond the heating surface can flex downward and can be brought into close and / or intimate contact with the various vertical faces of the platform, for example. For example, faces -110-, -112- and / or -114-. When an interactive element with microwave energy, for example a susceptor, is disposed on top of said faces, the faces can serve as heating surfaces to enhance browning and / or browning of corresponding parts of the food item.

As the microwave heating cycle progresses, the susceptor transforms microwave energy into thermal energy, which can then be transferred to the adjacent surface of the food item. Thus, browning and / or browning of the surface of the food item can be improved. In addition, the platforms -104- hold the food item in a raised position from the floor or turntable of the microwave oven, which reduces the amount of sensible heat transferred from the susceptor to the ambient environment of the microwave oven and further improves the browning and / or toasting.

Any of the numerous microwave interactive elements described herein or contemplated herein may be substantially continuous, that is, without substantial breaks or interruptions, or they may be discontinuous, for example, including one or more breaks or openings that transmit microwave energy through it. The gaps or openings may be sized and positioned to selectively heat specific areas of the food item. The number, shape, size and position of said ruptures or openings may vary for a specific application depending on the type of tray or other manufactured product being formed, the food item to be heated in or on it, the desired degree of protection. , browned and / or toasted, whether direct exposure to microwave energy is required or desired

ES 2 556 592 T3 to achieve uniform heating of the food item, the need to regulate the change in temperature of the food item by direct heating, and whether and to what extent ventilation is required.

It will be understood that the opening can be a physical opening or a void space in the material used to form the manufactured product, or it can be a non-physical opening. A non-physical opening may be a portion of the tray that is inactive to microwave energy by deactivation or otherwise, or else one that is transparent to microwave energy. Thus, for example, the aperture may be a portion of the fabricated tray formed without a microwave energy interactive material or, alternatively, it may be a portion of the fabricated tray formed with an energy interactive material from microwaves. microwave, which has been deactivated. While both physical and non-physical openings allow the food item to be heated directly by microwave energy, a physical opening also provides a ventilation function that allows the release of water vapor or other vapors from the food item.

Figures 2 to 5 show numerous examples of microwave energy interactive trays according to the invention, which include one or more discontinuities in the microwave energy interactive element. The various trays -200-, -300-, -400- and -500- include features that are similar to tray -100 shown in Figures 1A through 1E, except for the indicated variants and for variants that will be understood by those skilled in the art. . For simplicity, reference numerals with similar characteristics are preceded in the figures by a 2 (in figure 2), a 3 (in figure 3), a 4 (in figure 4) or a 5 (in figure 5) instead of a 1.

In the example shown in Figure 2, the microwave energy interactive element -216- comprises a series of separate susceptor bands (shown by dotting) that extend obliquely across the transverse center line -CL- of the tray -200-, with zones -218- inactive or transparent to microwaves between them. The bands can have any desired width, orientation and configuration. When used to heat a food item, the microwave energy interactive bands can form a corresponding series of darkened areas on the outer surface of the food item. These marks may resemble grill marks, such as with a panini grill.

In this and other aspects of the invention, it will be understood that the arrangement of microwave energy interactive and microwave energy transparent zones can be selected to provide various levels of heating, as required or desired for an application. specific. For example, when greater heating is desired, the total dead zone can be increased. By doing this, more microwave energy is transmitted to the food item. Alternatively, by decreasing the total dead zone, more microwave energy is absorbed by the dead zones with the microwave energy transformed into thermal energy, and transmitted to the surface of the food item to improve browning and / or browning. toasted.

In the example shown in Figure 3, the microwave energy interactive element -316- comprises a series of substantially evenly spaced susceptor squares (shown by dotting) with a grid-like arrangement of transparent areas -318- to microwave energy between them. It will be understood that the dimensions of the susceptible squares and the spaces between them may vary for a specific application. Furthermore, it will be understood that the susceptible elements need not be square in shape. Other shapes are contemplated in this specification. In this example, the arrangement of browning on the outer surface of a food item may resemble a series of substantially evenly spaced squares.

In the example shown in Figure 4, the microwave energy interactive element -416- comprises a series of concentric susceptor rings (shown by dotting) with zones or rings -418 transparent to microwave energy between them. In this example, the arrangement of browning on the outer surface of a food item (not shown) may appear to be a series of substantially evenly spaced semicircles, for example, where each food item is arranged on top of only one platform -404- , or to a series of partial concentric circles, in which the food item is arranged on top of both platforms -404- and extends through the recess -406-.

In the example shown in Figure 5, a series of physical openings -520- extend through the thickness of the tray -500- and interrupt the interactive element -516- with microwave energy. In this example, the openings -520- take the form of elongated slots that extend obliquely through the platforms -504-. However, it will be understood that the openings can have any suitable shape, for example circular, square, triangular, oval, oblong or any other regular or irregular shape, they can have any suitable configuration, for example random, tiled, staggered, of concentric rings, and can have any suitable placement, for example central, peripheral or along all or part of the tray. In this example, the browning arrangement may include a series of obliquely oriented, darkened areas on the outer surface of the food item. These darkened areas may look like grill marks.

ES 2 556 592 T3

It will be understood that any of the various trays of the invention may include a microwave energy interactive element, eg, a susceptor, which renders the tray microwave energy interactive. In each embodiment, the microwave energy interactive element may be substantially continuous, it may have one or more interruptions or discontinuities. Said interruptions or discontinuities can include non-physical openings and / or physical openings (ventilation), for example, as shown in Figures 2 to 5, or they can have any other arrangement, placement or configuration. It will be understood that the precise combination of characteristics can be selected as required or desired to enhance heating, browning and / or toasting of a specific food item. Although such elements may be described below in relation to some of the various trays of the invention, such elements are not shown in the remaining figures.

Alternatively or additionally, any of the various trays of the invention may include one or more ventilation channels that allow moisture to escape from the food item, thereby further enhancing the heating, browning and / or toasting of the food item.

For example, Figures 6A to 6D schematically show another exemplary disk or tray 600 by way of various aspects of the invention. Tray -600 includes features that are similar to tray -100 shown in Figures 1A through 1D, except for the variants indicated and for the variants that will be understood by those skilled in the art. For simplicity, reference numerals with similar characteristics are preceded in the figures by a 6 instead of a 1.

In this example, a pair of substantially parallel channels -616- (or grooves or recesses) extend through the upper face -608- of each platform -604- and optionally through one or both of the inner face -608. - and the outer face -612-. In this example, the channels -616- are substantially parallel to the longitudinal center line -CL- and are substantially regularly spaced around it, and are substantially perpendicular to the transverse center line -CT-. However, the channels can have any orientation as required or desired for a specific application. In this and other examples described or contemplated herein, the channels may be of any suitable depth that is required to provide the desired degree of ventilation for the specific heating application. In one aspect, the channels have a depth that is less than the height of the upper face, such that the bottom of at least one channel is located on the plane of the rim and / or recess of the tray. .

If desired, one or both platforms 604 may be contoured to generally conform to the shape of a food item. In this example, the height -H1- of each platform -604- is substantially uniform when viewed along the longitudinal center line -CL- of the tray -600, as shown in Figure 6C, and varies in height. seen along the inner face -610- of the platform -604-, as shown in Figure 6D. In this example, the height of the platform -604- and, therefore, the height of the upper face -608-, is reduced or decreased when viewed from the longitudinal center line -CL- towards each of the corner faces - 610-. However, other shapes and contours are contemplated.

The tray -600- can be characterized by having various heights, for example, -H1- and -H2-, lengths, for example, -L1-, -L2-, -L3-, -L4-, -L5-, - L6-, -L7-, -L8- and -L9-, and radii of curvature, for example, -R1-, -R2-, -R3- and -R4-, each of which may vary for a specific application . The dimensions of each platform -604 may be substantially identical or may differ, varying degrees of symmetry being contemplated herein.

If desired, a microwave energy interactive element (not shown) can be arranged on top and can be attached to at least a portion of the tray 600. For example, a susceptor (not shown) can be arranged on top of all or part of one or both platforms -604-, including all or part of each upper face -608-, inner face -610-, outer face -612- and / or corner faces -614-, of all or part of the recess -606- and / or all or part of one or more of the channels -616-.

To use tray 600, one or more food items (not shown) are usually placed on each platform and placed in a microwave oven (not shown). The contoured heating surface 608 of the platform 604 generally conforms to the contoured surface of the food item, which may vary as a result of the freezing process, and brings the susceptor in close proximity to the surface of the food item that it should be browned and / or toasted.

As the microwave heating cycle progresses, the susceptor transforms the microwave energy into thermal energy, which is then transferred to the adjacent surface of the food item. Thus, browning and / or browning of the surface of the food item can be improved. At least part of the vapor released from the food item can be withdrawn from the food item along the channels 616, thereby further enhancing browning and / or browning. Additionally, the platforms 604 keep the food item in an elevated position, which reduces the amount of sensible heat transferred from the susceptor to the environment of the microwave oven, further improving the browning and / or browning of the item.

ES 2 556 592 T3 food. The browning and / or browning arrangement may include an overall darkened appearance, with somewhat lighter areas corresponding to the areas that are arranged above the channels -616-.

Figures 7A to 7D schematically depict another exemplary tray 700, according to various aspects of the invention. Tray -700- includes features that are similar to tray -100- shown in Figures 1A through 1D and tray -600- shown in Figures 6A through 6D, except for the variants indicated and variants that will be understood by those skilled in the art. The matter. For simplicity, reference numerals with similar characteristics are preceded in the figures by a 7 instead of a 1 or a 6, respectively.

In this example, tray 700 includes a series of walls 718 extending substantially upward from flange 702, which serve as a base or lower portion of tray 700. If desired, the walls -718- can end in a lip -720-. If desired, a microwave energy interactive element (not shown) can be arranged on top and can be attached to at least a portion of tray 700. For example, a susceptor (not shown) may be arranged on top of all or part of one or both platforms -704-, including all or part of each upper face -708-, inner face -710-, face exterior -712- and / or corner faces -714-, of all or part of the recess -706- and / or all or part of one or more of the channels -716-. Said tray 700 may be suitable for use, for example, when the food item to be heated, browned and / or toasted includes components that may otherwise fall from a tray without walls, or when it is desired that the tray serves as a container from which the food item is consumed.

The tray -700- can be characterized by having various heights, for example -H1- and -H2-, lengths, for example -L1-, -L2-, -L3-, -L4-, -L5-, -L6 -, -L7-, -L8-, -L9-, -L10- and -L11-, radii of curvature, for example -R1-, -R2-, -R3-, -R4-, -R5-, -R6 - and -R7- and angles, for example, -A1-, each of which may vary for a specific application. The specifications of each platform 704 may be substantially identical or may differ, with varying degrees of symmetry contemplated herein.

Figures 8A to 8D schematically show another disk or tray 800 by way of example. Tray -800 includes features that are similar to tray -100 shown in Figures 1A through 1D and tray -600 shown in Figures 6A through 6D, except for the variants indicated and variants that will be understood by those skilled in the art. For simplicity, reference numerals with similar characteristics are preceded in the figures by an 8 instead of a 1 or a 6, respectively.

In this example, the tray -800- includes four substantially parallel channels -816- or recesses, which extend through the upper face -808- of each platform -804-, and optionally through one or both of the face. inside -810- and the outside face -812-. Such additional channels 816 may be desirable when additional ventilation is required to achieve the desired degree of browning and / or browning of a food item prepared therein. The channels 816 can be of any suitable depth as required to provide the desired degree of ventilation for a specific heating application.

The tray -800- can be characterized by having various heights, for example, -H1- and -H2-, lengths, for example, -L1-, -L2-, -L3-, -L4-, -L5-, - L6-, -L7-, -L8-, -L9-, and -L10-, and radii of curvature, for example, -R1-, -R2-, -R3, and -R4-, each of which can vary to a specific application. The dimensions of each platform 804 may be substantially identical or may differ, varying degrees of symmetry being contemplated herein.

As with the various other exemplary trays of the invention, a microwave energy interactive element (not shown) may be disposed on top of and may be attached to at least a portion of the tray 800- . For example, a susceptor (not shown) may be disposed on top of all or part of one or both platforms -804-, including all or part of each upper face -808-, inner face -810-, face exterior -812- and / or corner faces -814-, of all or part of the recess -806- and / or all or part of one or more of the channels -816-. The resulting browning and / or browning arrangement may include an overall darkened appearance with somewhat lighter areas corresponding to the areas that are arranged above the channels 816, generally resembling grill marks.

Figures 9A to 9E schematically represent another tray 900 by way of example. Tray -900- includes features that are similar to tray -100- (Figures 1A through 1D), Tray -600- (Figures 6A through 6D), and Tray -800- (Figures 8A through 8D), except for the indicated variants and variants to be understood by those skilled in the art. For simplicity, reference numerals of similar characteristics are preceded in the figures by a 9 instead of a 1, 6, or an 8, respectively.

In this example, tray 900 includes four substantially parallel channels 916 or recesses, extending obliquely through the upper face 908 of each platform 904, and optionally through one or both of the inner face -910- and outer face -912-. Such additional channels 916 may be desirable when additional ventilation is required to achieve the desired degree of browning and / or browning of a food item prepared therein.

ES 2 556 592 T3

The tray -900- can be characterized by having various heights, for example, -H1- and -H2-, lengths, for example, -L1-, -L2-, -L3-, -L4-, -L5-, - L6-, -L7- and -L8-, and radii of curvature, for example, -R1-, -R2-, -R3- and -R4-, each of which may vary for a specific application. The dimensions of each platform 904 may be substantially identical or may differ, various degrees of symmetry being contemplated herein.

If desired, a microwave energy interactive element (not shown) may be disposed on top and may be attached to at least a portion of the tray 900. For example, a susceptor (not shown) may be arranged on top of all or part of one or both platforms -904-, including all or part of each upper face -908-, inner face -910-, face exterior -912- and / or corner faces -914-, of all or part of the recess -906- and / or all or part of one or more of the channels -916-. The resulting browning and / or browning arrangement may include an overall darkened appearance with somewhat lighter obliquely oriented areas corresponding to the areas that are disposed above the channels 916, generally resembling grill marks.

Figures 10A to 10D schematically show another tray -1000- by way of example. Tray -1000 includes features that are similar to Tray -100- (Figures 1A to 1D), Tray -600- (Figures 6A to 6D), and Tray -800- (Figures 8A to 8D), except for the variants indicated and the variants that will be understood by those skilled in the art. For simplicity, reference numerals of similar characteristics are preceded in the figures by a 10 instead of a 1, 6, or an 8, respectively.

In this example, the platforms 1004 have a substantially flat top face 1008, as best seen in Figures 10C and 10D. Such a tray 1000 may be particularly suitable for use with food items having a substantially flat surface.

The tray -1000- can be characterized by having various heights, for example, -H1- and -H2-, lengths, for example, -L1-, -L2-, -L3-, -L4-, -L5-, - L6-, -L7-, -L8-, -L9-, and -L10-, and radii of curvature, for example, -R1-, -R2-, -R3, and -R4-, each of which can vary to a specific application.

Figures 11A to 11E schematically show another tray 1100 by way of example. The tray -1100- is substantially symmetrical along a longitudinal center line -CL- and a transverse center line -CT-. However, the tray may not include lines of symmetry, include a single line of symmetry, or multiple lines of symmetry, as required or desired for a specific application.

In this example, the tray -1100- has a substantially square shape with somewhat rounded corners -1102-. The tray -1100- includes a somewhat flat peripheral base or rim -1104-, which serves as the base or lower part of the tray -1100-, and a series of walls -1106- extending substantially upward from the rim. -1104-. If desired, the walls -1106- can end in a lip -1108-. Such a tray 1100- may be suitable to be used, for example, when the food item to be heated, browned and / or toasted includes components that may otherwise fall from a tray without walls, or when it is desired that the tray serves as the container from which the food item is consumed.

The tray -1100- includes a pair of platforms or facing raised parts -1110-, which serve as surfaces to receive one or more food items (not shown) therein. The platforms -1110- are separated by a recess -1112- which is located substantially in the same plane as the flange -1104-. In this example, the recess -1112- is located along the transverse center line -CT-. However, the recess -1112 can have any other suitable position, as required or desired for a specific application. Optionally, the platforms -1110- may be further separated by a spacer -1114- extending upward, along at least a portion of the length of the recess -1112-. The separator -1114 can assist the user with the proper placement of the food items on the tray -1100- in order to achieve the desired level of heating, browning and / or browning, and can help to keep the food items in the proper position. on the tray -1100- during the heating cycle.

Referring also to Figures 11A to 11D, the platforms -1110- have a somewhat elongated and rectangular shape with rounded corners -1116-. Each platform -1110- includes an upper face or surface -1118 (also called the upper surface and heating surface), a somewhat vertical inner face -1120-, a somewhat vertical outer face -1122- and a pair of corner faces. facing -1124-. It will be understood that, in this and other aspects of the invention, the various faces -1118-, -1120-, -1122- and -1124- are described as individual surfaces or faces only for simplicity and ease of description, and that said faces or surfaces can be substantially continuous and lack a defined boundary between them.

As shown in Figure 11B, the shape of the outer surface -1122- in a top view, in plan, generally corresponds to or follows the shape of the vertical walls -1106-. The inner face -1120- and the outer face -1122- of each platform -1110- extend obliquely or inclined, outward and downward, from the respective platform -1110- towards the recess -1112- or the flange -1104- , respectively, as best seen in Figure 11C. However, in this and other aspects, it is contemplated that the various faces that make up the

The platform according to the invention may be substantially vertical, or they may taper inward and downward from the platform, as required or desired for a specific application.

If desired, one or both platforms 1110 may be contoured to generally conform to the shape of a food item. In this example, the thickness of each platform -1110- and, therefore, the height -H1- of each upper face -1118-, is substantially uniform seen along the longitudinal center line -CL- of the tray - 1100-, as shown in Figure 11C, and varies in height seen along the inner face -1120- of the platform -1110-, as shown in Figure 11D. In this example, the thickness of the platform -1110- and, therefore, the height of the upper face -1118-, decreases or narrows from the longitudinal center line -CL- towards each of the corner faces -1124 -.

The tray -1100- can be characterized as having various heights, for example, -H1-, -H2-, -H3- and -H4-, lengths, for example, -L1-, -L2-, -L3-, - L4-, -L5-, -L6-, -L7-, -L8- and -L9-, radii of curvature, for example -R1-, -R2-, -R3-, -R4-, -R5-, -R6-, -R7-, -R8- and -R9-, and angles, for example, -A1-, -A2- and -A3-, each of which may vary for a specific application. The dimensions of each platform -1110- can be substantially identical, such that the tray -1100- is substantially symmetrical on each side of the longitudinal center line -CL- and / or the transverse center line -CT-, or they can differ, such that the tray -1100- is not symmetrical on either side of the longitudinal center line -CL- and / or the transverse center line -CL-.

If desired, a microwave energy interactive element (not shown) may be arranged on top and may be attached to at least a portion of the tray 1100. For example, a susceptor (not shown) can be arranged on top of all or part of one or both platforms -1110-, including all or part of each upper face -1118-, inner face -1120-, face exterior -1122- and / or corner face -1124-, and / or all or part of the recess -1112-.

Figures 12A to 12D schematically represent yet another tray -1200- by way of example. Tray 1200 includes some features that are similar to tray 1100 shown in Figures 11A to 11D, except for the variants mentioned and variants that will be understood by those skilled in the art. For simplicity, reference numerals with similar characteristics are preceded in the figures by 12 instead of 11.

In this example, a pair of substantially parallel ventilation channels -1226- extend through the upper face -1218- of each platform -1210-, and optionally through one, or both, of the inner face -1220- and the outer face -1222-. The channels 1226 may be of any suitable depth as required to provide the desired degree of ventilation for the specific heating application. In this example, the channels -1226- are substantially parallel to the longitudinal center line -CL- and are substantially evenly spaced around it, and are substantially perpendicular to the transverse center line -CT-. However, the channels 1226 can have any orientation as required or desired for a specific application. Additionally, it should be noted that the tray -1200- does not include a transverse partition wall -1114- (Figures 11A to 11E).

The tray -1200- can be characterized as having various heights, for example -H1- and -H2-, lengths, for example -L1-, -L2-, -L3-, -L4-, -L5-, -L6 -, -L7-, -L8-, -L9- and -L10-, radii of curvature, for example, -R1-, -R2-, -R3-, -R4-, -R5-, -R6-, - R7-, -R8-, -R9- and -R10-, and angles, for example, -A1-, each of which may vary for a specific application. The dimensions of each platform 1210 may be substantially identical or may differ, and various degrees of symmetry are contemplated herein.

If desired, a microwave energy interactive element (not shown) can be arranged on top and can be attached to at least a portion of the tray 1200-. For example, a susceptor (not shown) can be arranged on top of all or part of one or both platforms -1210-, including all or part of each upper face -1218-, inner face -1220-, face exterior -1222- and / or corner faces -1224-, of all or part of the recess -1212- and / or all or part of one or more of the channels -1226-.

Figures 13A and 13B schematically represent yet another tray -1300- by way of example. Tray 1300 includes some features that are similar to tray 1100 shown in Figures 11A through 11D, except for the variants mentioned and variants that will be understood by those skilled in the art. For simplicity, reference numerals with similar characteristics are preceded in the figures by 13 instead of 11.

In this example, the platforms -1110- of Figures 11A to 11D are replaced by a series of substantially rectangular raised portions -1328- arranged as a pair of facing groups -1330- separated by a transverse spacer -1314-. Each group includes three raised portions -1328- arranged in a substantially parallel configuration, obliquely to the transverse wall -1314-. However, other numbers, shapes and arrangements of the raised parts are contemplated. The raised portions -1328- within each group -1330- jointly serve as a platform to receive a food item (not shown) therein, with the

Spaces 1332 between adjacent raised portions 1328 providing ventilation to the food item (not shown) during the heating cycle.

If desired, a microwave energy interactive element (not shown) may be disposed on top and may be attached to at least a portion of the tray 1300. For example, a susceptor (not shown) may be disposed on top of all or part of one or more raised portions -1328- to enhance heating, browning and / or toasting of a heated food item therein.

Figures 14A to 14E schematically represent another tray 1400 by way of example. The tray 1400 has a substantially triangular shape with rounded corners 1402 and is substantially symmetrical along a longitudinal center line CL. However, many other shapes and configurations are contemplated herein. The tray 1400- also includes a transverse center line CT, as indicated in FIG. 14B.

The tray -1400- includes a flange or base -1404- and a series of walls -1406- extending upwardly from the base -1404-. The walls -1406- are optionally terminated with a flange or lip -1408-. The tray -1400- further includes a platform or raised part -1410- of substantially triangular shape, which includes an upper face or surface -1412- intended to receive therein a food item, and a series of somewhat vertical side faces, - 1414- joined by slightly arched corner faces -1416-. In this example, the top surface 1412 is substantially flat. However, it will be understood that contoured surfaces are contemplated herein. Side faces 1414 and corner faces 1416 extend obliquely and outwardly from top surface 1412 to base 1404, as best seen in Figures 14C through 14E.

It will be understood that, in this and other aspects of the invention, the various faces -1412-, -1414- and -1416- are described as individual surfaces or faces only for simplicity and ease of description, and that said faces or surfaces they can be substantially continuous and lack a defined boundary between them. Furthermore, it will be understood that the platform can have any desired shape, and that many other regular and irregular shapes are contemplated herein.

The various elements and aspects of the tray -1400- can be characterized as having various heights, for example -H1- and -H2-, lengths, for example -L1-, -L2-, -L3-, -L4-, -L5-, -L6-, -L7-, -L8-, -L9-, -L10-, -L11-, -L12-, -L13- and -L14-, radii of curvature, for example -R1-, -R2-, -R3-, -R4-, -R5-, -R6-, -R7- and -R8-, and angles, for example, -A1-, each of which may vary for a specific application.

If desired, a microwave energy interactive element (not shown) can be arranged on top and can be attached to at least a portion of the tray 1400-. For example, a susceptor (not shown) can be arranged on top of all or part of the platform -1410-, including all or part of the upper face -1412-, the lateral faces -1414- and / or the corner faces -1416-. Additionally, as with the various other examples of manufactured products disclosed or contemplated herein, the tray may include one or more physical openings (not shown) to allow ventilation through the side walls and / or from the bottom of the tray. Tray 1400- can be used as described above in connection with the various other exemplary trays.

Figures 15A to 15F schematically show yet another tray -1500- by way of example. Tray 1500 includes features that are similar to tray 1400 shown in Figures 14A through 14E, except for the variants indicated and for the variants that will be understood by those skilled in the art. For simplicity, reference numerals with similar characteristics are preceded in the figures by 15 instead of 14.

In this example, the tray -1500- includes a series of channels -1518- in the platform -1510- that extend in a direction that is substantially parallel to the transverse center line -CT- and substantially perpendicular to the longitudinal centerline - CL-. Other configurations are contemplated. In this example, the tray -1500- includes six channels -1518- of variable length, with the shorter channels -1518- next to a first narrow end -1520- of the tray -1500-, and the longest channels - 1518- next to a second wider end -1522- of the tray -1500-. The channels 1518 can be of any suitable depth as required to provide the desired degree of ventilation for the specific heating application.

The tray -1500- can be characterized by having various heights, for example, -H1-, -H2- and -H3-, lengths, for example -L1-, -L2-, -L3-, -L4-, -L5 -, -L6-, -L7-, -L8-, -L9-, -L10-, -L11-, -L12-, -L13-, -L14- and -L15-, radii of curvature, for example -R1 -, -R2-, -R3-, -R4-, -R5-, -R6-, -R7- and -R8- and angles, for example -A1-, each of which may vary for a specific application .

If desired, a microwave energy interactive element (not shown) can be arranged on top and can be attached to at least a portion of the tray 1500. For example, a susceptor (not shown) may be arranged on top of all or part of the platform -1510-, including all or a part of

ES 2 556 592 T3 the upper face -1512-, the lateral faces -1514- and / or the corner faces -1516-, and / or all or part of one or more of the channels -1518-. The tray 1500 can be used as described above.

Figures 16A to 16F schematically represent yet another tray -1600- by way of example. Tray 1600 includes features that are similar to tray 1400 shown in Figures 14A through 14E and tray 1500 shown in Figures 15A through 15F, except for the variants indicated and variants that will be understood by those skilled in the art. The matter. For simplicity, reference numerals with similar characteristics are preceded in the figures by 16 instead of 14 or 15, respectively.

In this example, the tray -1600- includes a series of channels -1618- in the platform -1610- that extend in a transverse direction, substantially parallel to the transverse center line -CT-, and substantially perpendicular to the longitudinal center line. -CL-, and a series of grooves or channels -1624- extending in a longitudinal direction substantially parallel to the longitudinal center line -CL-, and substantially perpendicular to the transverse center line -CT-. Such additional channels may be desirable when additional ventilation is required.

In this example, the tray -1600- includes six transverse channels -1618- of variable length, with the shorter channels -1618- next to a first narrow end -1620- of the tray -1600-, and the longest channels -1618- next to a second wider end -1622- of the tray -1600-. The tray -1600- also includes three longitudinal channels -1624a-, -1624b- of variable length, the longest channel -1624a being close to the longitudinal center line -CL- and the shortest channels -1624b- close to the walls -1606 -. However, other configurations can be used if desired. The channels -1618-, -1624a-, -1624b- can be of any suitable depth as required to provide the desired degree of ventilation for the specific heating application.

The tray -1600- can be characterized by having various heights, for example -H1-, -H2- and -H3-, lengths, for example -L1-, -L2-, -L3-, -L4-, -L5 -, -L6-, -L7-, -L8-, -L9-, -L10-, -L11-, -L12-, -L13-, -L14- and -L15-, radii of curvature, for example -R1 -, -R2-, -R3-, -R4-, -R5-, -R6-, -R7- and -R8- and angles, for example -A1-, each of which may vary for a specific application .

If desired, a microwave energy interactive element (not shown) may be disposed on top and may be attached to at least a portion of the tray 1600. For example, a susceptor (not shown) can be arranged on top of all or part of the platform -1610-, including all or part of the upper face -1612-, the lateral faces -1614- and / or the corner faces -1616-, and / or all or part of one or more of the channels -1618-, -1624a- and / or -1624b-. Tray 1600 can be used substantially as described above.

Figures 17A to 17E schematically show yet another tray -1700- by way of example. The tray -1700 is generally in the shape of a circular sector, with a pair of radial sides -1702-, an arched side -1704- and rounded corners -1706- joining the radial sides -1702- and the arched side -1704-. The tray -1700- is substantially symmetrical along a longitudinal center line -CL-. The tray -1700- also includes a transverse center line -CL-.

The tray -1700- includes a peripheral flange -1708- and a platform -1710- extending upwardly from the flange -1708-. The platform -1710- includes a substantially flat top face or surface -1712- for receiving a food item (not shown) and a series of joined side faces -1714- and corner faces -1716 extending obliquely and outwardly between the face. upper -1712- towards the flange -1708-. The platform 1710 includes a series of channels 1718 that extend in a general transverse direction. In this example, the platform -1710- includes six channels of variable length, with the shorter channels -1718- close to a first narrow end -1720- of the tray -1700-, and the longest channels close to a second wider end -1722- of the tray -1700- (that is, close to the arched side -1704- of the tray -1700-). The channels 1718 can be of any suitable depth as required to provide the desired degree of ventilation for the specific heating application. Each channel -1718- can have a radius of curvature similar to that of the arcuate side -1704-, in this example, -R4-. However, many other configurations are contemplated herein.

Tray -1700- can be characterized as having various heights, for example -H1-, lengths, for example -L1-, -L2-, -L3- and -L4-, radii of curvature, for example -R1-, -R2-, -R3-, -R4-, -R5-, -R6- and -R7-, and angles, for example -A1-, each of which may vary for a specific application.

If desired, a microwave energy interactive element (not shown) can be arranged on top and can be attached to at least a portion of the tray 1700-. For example, a susceptor (not shown) may be arranged on top of all or part of the platform -1710-, including all or part of the upper face -1712-, the lateral faces -1714- and / or the corner faces -1716-, and / or all or part of one or more of the channels -1718-.

ES 2 556 592 T3

Figures 18A to 18E schematically show yet another tray 1800 by way of example. Tray 1800 includes features that are similar to tray 1700 shown in Figures 17A through 17E, except for the variants noted and for variants that will be understood by those skilled in the art. For simplicity, reference numerals with similar characteristics are preceded in the figures by 18 instead of 17.

In this example, in addition to channels -1818- extending in a general transverse direction, platform -1810- includes a series of channels -1824a-, -1824b- extending in a general longitudinal direction. In this example, the tray -1800- includes, in general, three longitudinal channels -1824a-, -1824b- of variable length, with the longest channel -1824a- close to the longitudinal center line -CL-, and the most short -1824b- close to the radial sides -1802-. The channels -1824b- are aligned obliquely with respect to the channel -1824a- and the longitudinal center line -CL-, in such a way that each channel -1824b- is substantially equidistant from the faces -1814- and the channel -1824a-, which it is substantially aligned with the longitudinal center line -CL-. However, the invention contemplates many other arrangements. The various channels -1818-, -1824a-, -1824b- can be of any suitable depth as required to provide the desired degree of ventilation for the specific heating application.

The tray -1800- can be characterized by having various heights, for example -H1-, lengths, for example -L1-, -L2-, -L3- and -L4-, radii of curvature, for example -R1-, -R2-, -R3-, -R4-, -R5-, -R6- and -R7-, and angles, for example -A1- and -A2-, each of which may vary for a specific application.

If desired, a microwave energy interactive element (not shown) may be disposed on top and may be attached to at least a portion of the tray 1800. For example, a susceptor (not shown) can be arranged on top of all or part of the platform -1810-, including all or part of the upper face -1812-, the lateral faces -1814- and / or the corner faces -1816-, and / or all or part of one or more of the channels -1818-, -1824a- and / or -1824b-.

Figures 19A to 19E schematically show yet another tray -1900- by way of example. Tray 1900 includes features that are similar to tray 1700 shown in Figures 17A through 17E, except for the variants noted and for variants that will be understood by those skilled in the art. For simplicity, reference numerals with similar characteristics are preceded in the figures by 19 instead of 17.

In this example, tray 1900 includes a series of attached side walls 1926 and corner walls 1928 extending upwardly from flange 1908. Such a tray may be suitable, for example, when the food item heated in the tray includes components that can fall out of the food item, or when it is desired that the tray be used as a container to transport the food item prior to consumption, or during the same. As with the many other examples herein, the walls may include one or more openings that extend through them to provide additional ventilation during the heating cycle.

If desired, a microwave energy interactive element (not shown) can be arranged on top and can be attached to at least a portion of the tray -1900-. For example, a susceptor (not shown) may be arranged on top of all or part of the platform -1910-, including all or part of the upper face -1912-, the lateral faces -1914- and / or the corner faces -1916-, and / or all or part of one or more of the channels -1918-. The tray -1900- can be characterized by having various heights, for example -H1- and -H2-, lengths, for example -L1-, -L2-, -L3-, -L4-, -L5-, -L6 -, -L7-, -L8-, -L9-, -L10-, -L11-, -L12-, -L13- and -L14-, radii of curvature, for example -R1-, -R2-, - R3-, -R4-, -R5-, -R6-, -R7-, -R8-, -R9- and -R10-, and angles, for example, -A1-, each of which may vary for a specific application.

Figures 20A to 20D depict yet another tray -2000- by way of example, according to various aspects of the invention. The tray -2000- has a substantially circular shape, and is substantially symmetrical along a longitudinal center line -CL- and a transverse center line -CT-.

The tray -2000- includes a rim or base -2002- and a series of walls -2004- that extend upward from the base -2002-. The walls -2004- optionally terminate in a flange or lip -2006-. The tray -2000 further includes a platform or raised part of substantially circular shape -2008- that includes an upper face or surface -2010- (central part) intended to receive a food item thereon and a somewhat vertical circumferential or peripheral face -2012- (peripheral part) extending obliquely, inclined outward and downward, and which reduces its height from the upper face -2010- towards the base -2004-, as best seen in figures 20C and 20D. However, it will be understood that the circumferential face -2012- may be substantially perpendicular to the top surface -2010- and / or the base -2004-, or it may taper inwardly, if desired.

Also referring to Figures 20A to 20C, the tray -2000- includes a series of substantially parallel ventilation channels -2014- of variable length, which extend, at least, through a portion of the upper face -2010. - of the platform -2008-, and optionally, at least, through a part of the circumferential face -2012-. In this example, tray -2000- includes five ventilation channels -2014

ES 2 556 592 T3 substantially parallel to the longitudinal center line -CL- and substantially regularly spaced around it, and substantially perpendicular to the transverse center line -CT-. However, a smaller or larger number of channels may be used if required or desired, and any such channel may have any orientation required or desired for a specific application. In addition, each of the -2014 channels can have any suitable depth that is required to provide the desired degree of ventilation for the specific heating application.

If desired, the shelf 2008 may be contoured to generally conform to the shape of a food item. Each of the central portion and the peripheral portion of the platform may independently have a substantially curvilinear shape or may be substantially flat or flattened in shape, as required for a specific food item. In this example, the platform -2008- is substantially domed or crowned seen along both the transverse center line -CT- and the longitudinal center line -CL-, such that the height -H1- of the platform decreases from the center of the platform -2008- outwards, in any direction towards the base -2004-. Both the central part -2010- and the face or peripheral part -2012- of the tray -2000- are substantially curvilinear, the peripheral part -2012- being slightly flatter than the central part -2010-. Said tray 2000 may be particularly suitable for use with food items that have a somewhat arched or domed shape, such as food items based on frozen doughs, for example circular pizzas.

The tray -2000- can be characterized as having various heights, for example, -H1-, -H2- and -H3-, lengths, for example, -L1-, -L2-, -L3-, -L4- and -L5-, radii of curvature, for example -R1-, -R2-, -R3-, -R4-, -R5- and -R6-, and angles, for example -A1-, each of which it may vary for a specific application.

If desired, a microwave energy interactive element (not shown) can be arranged on top and can be attached to at least a portion of the tray 2000. For example, a susceptor (not shown) can be arranged on top of all or part of the platform -2008-, including all or part of the upper face -2010- and / or the circumferential face -2012- , and / or all or part of one or more of the channels -2014-.

Figures 21A to 21D schematically show yet another tray -2100- by way of example, according to various aspects of the invention. Tray 2100 includes features that are similar to tray 2000 shown in Figures 20A through 20D, except for the variants indicated and for the variants that will be understood by those skilled in the art. For simplicity, reference numerals with similar characteristics are preceded in the figures by 21 instead of 20.

In this example, the tray -2100- includes four ventilation channels -2114- that extend, at least partially, through the platform -2108- and, optionally, at least partially, through the circumferential face - 2112-.

The tray -2100- can be characterized as having various heights, for example -H1- and -H2-, lengths, for example, -L1-, -L2-, -L3-, -L4- and -L5-, radii of curvature, for example, -R1-, -R2-, -R3-, -R4-, -R5- and -R6-, and angles, for example, -A1-, each of which may vary for a specific application.

If desired, a microwave energy interactive element (not shown) can be arranged on top and can be attached to at least a portion of tray 2100-. For example, a susceptor (not shown) may be arranged on top of all or part of the platform -2108-, including all or part of the upper face -2110- and / or the circumferential face -2112- , and / or all or part of one or more of the channels -2114-.

According to another aspect of the invention, any of the various trays may be provided with features that aid in handling the tray before, during, and after use. For example, the trays shown schematically in Figures 7A to 7D, 11A to 16F and 19A to 21D include dimensionally stable walls (eg, walls 718) which may be formed, for example, by thermal and / or mechanical pressing. It will be apparent that such features can be used to hold the tray, for example, when the tray is removed from the microwave oven. However, such features can also help in various stages of the manufacturing and distribution process. For example, the walls can be fastened during manufacturing to facilitate transfer between equipment, stacking the trays, and packing the trays into boxes for shipment.

The need for such a clamping feature is particularly evident, for example, in a tray having a curvilinear peripheral edge, for example, as shown (but not identified) in Figures 1A to 6D, 8A to 10D and 17A to 18E. In order to efficiently stack a series of said trays, the respective platforms (eg, platform 708) of the various trays, theoretically, are substantially aligned with one another in an overlapping arrangement. However, when the trays are stacked, it may be necessary to reorient each tray with respect to the adjacent tray to achieve the necessary alignment to allow the trays to fit together. Therefore, according to one aspect of the invention, the tray may be provided with handles that

ES 2 556 592 T3 can be defined by one or more break lines. The handles can serve as a holding feature for the user and as an edge to manipulate the trays and / or to guide the trays into alignment during any of a number of manufacturing, distribution and / or packaging processes.

An example of a tray with a defined collapsible clamping feature is shown schematically in Figures 22A to 22E. Tray -2200- includes features that are similar to tray -100- shown in Figures 1A through 1D, except for the variants indicated and for the variants that will be understood by those skilled in the art. For simplicity, reference numerals with similar characteristics are preceded in the figures by a 22 instead of a 1.

In this example, tray 2200 includes a pair of tear lines 2218 substantially parallel and facing each other. Each tear line 2218 extends substantially between respective pairs of points along the curvilinear peripheral edge 2220 of the tray 2200. However, the invention contemplates other handle configurations, positions, and numbers. The break lines -2218- define a pair of substantially opposite handles -2222- that are adapted to be folded out of the plane of the base -2202- towards the respective platform -2208- along the respective break lines -2218 -, as shown schematically in Figures 22D and 22E. The handles -2222- can be folded in any required magnitude, such that an angle -α- formed between each respective handle -2222- and the plane of the base -2202- can be greater than 0^or up to 180^or, for example, from about 5^or up to about 115^or, from about 15^or up to about 90^or, from about 25^or up to about 75^or, or from about 30^orup to about 60^or, for example, about 45^or. When folded in this manner, the handles 2222 can be used by the user to hold the tray 2200 before and after use.

Additionally, when each respective handle -2222- is folded up, the tear line -2218- defines a substantially linear guide edge that can be used as a guide or reference point that can be used during manufacturing, packaging and / or distribution, for example, to precisely position one tray relative to another. Therefore, in the example shown in Figures 22A to 22E, the guide edge -2218- can be used to orient the trays -2200- in order to position the respective platforms -2208- of each tray substantially aligned with each other. . As a result, the trays can be stacked and / or nested more efficiently and effectively.

In some embodiments, one or more of the break lines -2218- may be positioned to be substantially perpendicular to the longitudinal center line -CL- or the transverse center line -CT-. In this example, the recess -2206- is located along the transverse center line -CT-. Therefore, the break line -2218- is also substantially perpendicular to the recess -2206-. However, other positions and configurations are contemplated.

Any suitable break line can be used to define the handles in accordance with the invention. In one example, the tear line takes the form of a fold line. The fold line can be any substantially linear, although not necessarily straight, form of weakness that facilitates folding along it. More specifically, but not for the purpose of reducing the scope of the present invention, the fold line may be a score line, such as a line formed with a blunt cutter for scoring, or the like, that creates a crushed portion in the material along the desired line of weakness, a cut or series of cuts that partially and / or completely extend into the material along the desired line of weakness, or any combination of these features.

Numerous materials may be suitable for use in forming the various fabricated products of the invention, provided that the materials are resistant to softening, scorching, burning, or degrading at typical microwave oven heating temperatures, for example, from about 250 ° F to approximately 425 ° F. Specific materials used may include materials that are interactive with microwave energy and materials that are inactive or transparent to microwave energy.

For example, all or part of the tray may be formed, at least partially, of a cardboard material, which can be cut into a blank prior to use in the tray. For example, the tray may be formed, at least partially, of paperboard having a basis weight of from about 60 to about 330 lb / ream (lb / 3,000 sq ft), eg, from about 80 to about 140 lb / ream. In general, the cardboard sheet may have a thickness of from about 6 to about 30 mils, for example, from about 12 to about 28 mils. In a specific example, the cardboard sheet is about 12 mils thick. Any suitable board sheet can be used, for example a solid bleached or unbleached sulfate board, such as SUS® board, commercially available from Graphic Packaging International. Alternatively, all or part of the tray may be formed, at least partially, of a polymer or a polymeric material, for example, coextruded polyethylene terephthalate or polypropylene. This report includes other materials.

ES 2 556 592 T3

The microwave energy interactive material may be an electroconductive or semiconductor material, for example a metal or a metal alloy arranged as a metallic foil; a vacuum deposited metal or metal alloy, a metallic ink, or an organic ink, an inorganic ink, a metallic paste, an organic paste, an inorganic paste, or any combination thereof. Examples of metals and metal alloys that may be suitable for use with the present invention include, but are not limited to, aluminum, chromium, copper, Inconel alloys (nickel-chromium-molybdenum alloy with niobium), iron, magnesium, nickel, stainless steel, tin, titanium, tungsten, and any combination or alloy thereof.

Alternatively, the microwave energy interactive material may comprise a metal oxide. Examples of metal oxides that may be suitable for use with the present invention include, but are not limited to, oxides of aluminum, iron, and tin, used in conjunction with an electrically conductive material when necessary. Another example of a metal oxide that may be suitable for use with the present invention is indium tin oxide (ITO). ITO can be used as a microwave energy interactive material to provide a heating effect, a shielding effect, a browning and / or browning effect, or a combination thereof. For example, to form a susceptor, ITO can be sputtered onto a transparent polymer film. The sputtering process typically occurs at a lower temperature than the evaporative deposition process used for metal deposition. ITO has a more uniform crystalline structure and is therefore transparent at most coating thicknesses. Additionally, ITO can be used for field management or warm-up purposes. ITO may also have fewer defects than metals, thus making thick ITO coatings more suitable for field management than thick coatings on metals, such as aluminum.

Alternatively, the microwave energy interactive material may comprise a ferroelectric or a suitable non-conductive, semiconductor, or electroconductive man-made dielectric. Artificial dielectrics comprise subdivided conductive material, in a polymeric matrix or in a suitable binder, and may include flakes of an electrically conductive metal, for example aluminum.

The substrate usually comprises an electrical insulator, for example a polymer film or other polymeric material. As used herein, the terms polymer, polymer film, and polymeric material include, but are not limited to, homopolymers, copolymers, such as for example, block, graft, random and alternate copolymers, terpolymers, etc. , and mixtures and modifications thereof. Furthermore, unless specifically limited, the term polymer should include all possible geometric configurations of the molecule. These configurations include, but are not limited to, isotactic, syndiotactic, and random symmetries.

The thickness of the film can usually be from about 35 gauge to about 10 mil. In one aspect, the thickness of the film is from about 40 to about 80 gauge. In another aspect, the thickness of the film is from about 45 to about 50 gauge. In yet another aspect, the thickness of the film is about 50 gauge. 48. Examples of polymeric films that may be suitable include, but are not limited to, polyolefins, polyesters, polyamides, polyimides, polysulfones, polyether ketones, cellophanes, or any combination thereof. Other non-conductive substrate materials can also be used, such as paper and paper laminates, metal oxides, silicates, celluloses, or any combination thereof.

In one example, the polymer film comprises polyethylene terephthalate (PET). Polyethylene terephthalate films are used in commercially available susceptors, for example, the QWIKWAVE® Focus susceptor and the MICRORITE® susceptor, both available from Graphic Packaging International (Marietta, Georgia). Examples of polyethylene terephthalate films that may be suitable for use as a substrate include, but are not limited to, MELINEX®, commercially available from DuPont Teijan Films (Hopewell, Virginia), SKYROL, commercially available from SKC, Inc. (Covington, Georgia) and BARRIALOX PET, commercially available from Toray Films (Front Royal, VA), and QU50 High Barrier Coated PET, available from Toray Films (Front Royal, VA).

The polymer film can be selected to impart various properties to the microwave interactive structure, for example printability, heat resistance, or any other property. As a specific example, the polymer film can be selected to provide a water barrier, an oxygen barrier, or a combination thereof. Said barrier film layers can be formed from a polymer film with barrier properties, or from any other coating or barrier layer that is desired. Suitable polymeric barrier films may include, but are not limited to, ethylene vinyl alcohol, barrier nylon, polyvinylidene chloride, barrier fluoropolymer, nylon 6, nylon 6,6, nylon 6 / EVOH / nylon 6 co-extruded, film coated with silicon oxide, barrier polyethylene terephthalate, or any combination thereof.

An example of a barrier film that may be suitable for use with the present invention is Nylon 6 CAPRAN® EMBLEM 1200M, commercially available from Honeywell International (Pottsville, USA).

ES 2 556 592 T3

Pennsylvania). Another example of a barrier film that may be suitable is CAPRAN® OXYSHIELD OBS monoaxially oriented coextruded nylon 6 / ethylene vinyl alcohol (EVOH) / nylon 6, also commercially available from Honeywell International. Yet another example of a barrier film that may be suitable for use with the present invention is DARTEK® Nylon 6,6 N-201, commercially available from Enhance Packaging Technologies (Webster, New York). Additional examples include BARRIALOX PET, available from Toray Films (Front Royal, VA), and QU50 High Barrier Coated PET, available from Toray Films (Front Royal, VA), mentioned above.

Other barrier films include silicon oxide coated films, such as those available from Sheldahl Films (Northfield, Minnesota). Thus, in one example, a susceptor may have a structure that includes a film, eg, polyethylene terephthalate, with a layer of silicon oxide coated on the film, and ITO or other material deposited on the silicon oxide. If required or desired, additional layers or coatings can be provided to protect the individual layers from damage during the process.

The barrier film can have an Oxygen Transmission Index (OTR), measured using ASTM D3985, of less than about 20 cm³/ m²/day. In one aspect, the barrier film has an OTR of less than about 10 cm³/ m²/day. In another aspect, the barrier film has an OTR of less than about 1 cm.³/ m²/day. In yet another aspect, the barrier film has an OTR of less than about 0.5 cm.³/ m²/day. In yet another aspect, the barrier film has an OTR of less than about 0.1 cm.³/ m²/day.

The barrier film can have a water vapor transmission index (WVTR) of less than about 100 g / m²/ day, measured using ASTM F 1249. In one aspect, the barrier film has a WVTR of less than about 50 g / m²/day. In another aspect, the barrier film has a WVTR of less than about 15 g / m.²/day. In yet another aspect, the barrier film has a WVTR of less than about 1 g / m.²/day. In yet another aspect, the barrier film has a WVTR of less than about 0.1 g / m.²/day. In yet another aspect, the barrier film has a WVTR of less than about 0.05 g / m.²/day.

Other non-conductive substrate materials such as metal oxides, silicates, celluloses, or any combination thereof, may also be used in accordance with the present invention.

The microwave energy interactive material can be applied to the substrate in any suitable manner, and in some cases, the microwave energy interactive material is printed, extruded, sputtered, evaporated or laminated on the substrate. The microwave energy interactive material can be applied to the substrate in any arrangement, and using any technique, to achieve the desired heating effect of the food item. For example, the microwave energy interactive material may be arranged as a continuous or discontinuous layer or coating that includes circles, loops, hexagons, islands, squares, rectangles, octagons, and so on. Examples of various arrangements and procedures that may be suitable for use with the present invention are disclosed in US Pat. Nos. 6,765,182; 6,717,121; 6,677,563; 6,552,315; 6,455,827; 6,433,322; 6,410,290; 6,251,451; 6,204,492; 6,150,646; 6,114,679; 5,800,724; 5,759,418; 5,672,407; 5,628,921; 5,519,195; 5,420,517; 5,410,135; 5,354,973; 5,340,436; 5,266,386; 5,260,537; 5221,419; 5,213,902; 5,117,078; 5,039,364; 4,963,420; 4,936,935; 4,890,439; 4,775,771; 4,865,921; and Re. 34,683. Although specific examples of microwave energy interactive material arrangements are shown and described herein, it should be understood that the present invention contemplates other microwave energy interactive material arrangements.

It will be understood that while susceptible elements are described in detail herein, many other microwave energy interactive elements and combinations thereof are contemplated herein. For example, the microwave interactive element may comprise a sheet (not shown) having a thickness sufficient to protect one or more selected portions of the food item from microwave energy (sometimes referred to as a shield element). Such protection elements can be used when the food article is prone to scorching or drying out during heating.

The protection element can be formed of various materials and can have various configurations, depending on the specific application for which the protection element is used. Typically, the shielding element is formed from a conductive, reflective metal, or a metallic alloy, for example, aluminum, copper, or stainless steel. This shield element can generally have a thickness of from about 0.000285 inches to about 0.05 inches. In one aspect, the shield member has a thickness of from about 0.0003 inches to about 0.03 inches. In another aspect, the shield member has a thickness of from about 0.00035 inches to about 0.020 inches, eg, 0.016 inches.

In yet another example, the microwave interactive element may comprise a segmented sheet, such as those disclosed in US Patent Nos. 6,204,492, 6,433,322, 6,552,315, and 6,677,563, but not

ES 2 556 592 T3 is limited thereto. Although the segmented sheets are not continuous, the clusters of such segments, properly spaced, often act as a transmission element to direct microwave energy to specific areas of the food item. Said sheets can also be used in combination with other elements, for example susceptors.

It will be understood that with some combinations of elements and materials, the microwave interactive element or material may have a gray or silver color that is visually distinguishable from the substrate or other components in the structure. However, in some cases, it may be desirable to provide a structure that has a uniform color and / or appearance. Such a structure may be more aesthetically pleasing to the consumer, particularly when the consumer is accustomed to packages, containers, trays, or other products made with certain visual attributes, eg, continuous color, specific arrangement, and the like. Thus, for example, the present invention contemplates using a silver or gray hue adhesive to bond microwave interactive elements to the substrate, using a silver or gray hue substrate to mask the presence of the hue microwave interactive element silver or gray, use a substrate with a dark hue, for example a substrate with a black hue, To hide the presence of an interactive element with silver or gray tones, overprint the metallic side of the laminar element with a silver or gray tone ink to darken the color variation, print the non-metallic side of the structure with an ink silver or gray or other concealment color in a suitable arrangement or as a continuous color layer to mask or conceal the presence of the microwave interactive element, or any other suitable technique or combination thereof.

The present invention can be better understood by way of the following examples, which are not to be construed as limiting in any way.

EXAMPLE 1

A fabricated product was formed, according to Figures 1A to 1D, with the following approximate dimensions: -H1- was approximately 0.19 inches, -L1- was approximately 6.0 inches, -L2- was approximately 5.5 inches, -L3- was approximately 0.28 inches, -L4- was approximately 0.94 inches, -L5- was about 1.9 inches, -L6- was about 6.2 inches, -L7- was about 5.4 inches, -L8- was about 0.42 inches, - R1- was about 0.25 inch, -R2- was approximately 0.25 inches and -R3- was approximately 0.25 inches. However, other suitable dimensions are contemplated. A 48 gauge metallized polyethylene terephthalate film (ie, a susceptor film) was bonded to the fabricated product, substantially as shown in Figure 1E.

EXAMPLE 2

A fabricated product was formed, according to Figures 1A to 1D, with the following approximate dimensions: -H1- was approximately 0.19 inches, -L1- was approximately 6.0 inches, -L2- was approximately 5.5 inches, -L3- was approximately 0.28 inches, -L4- was approximately 0.94 inches, -L5- was about 1.9 inches, -L6- was about 6.2 inches, -L7- was about 5.4 inches, -L8- was about 0.42 inches, - R1- was about 0.25 inch, -R2- was approximately 0.25 inches and -R3- was approximately 0.25 inches. However, other suitable dimensions are contemplated. A 48 gauge metallized polyethylene terephthalate film (i.e., a susceptor film) was bonded to the fabricated product, substantially as shown in Figure 2.

EXAMPLE 3

A fabricated product was formed, according to Figures 1A to 1D, with the following approximate dimensions: -H1- was approximately 0.19 inches, -L1- was approximately 6.0 inches, -L2- was approximately 5.5 inches, -L3- was approximately 0.28 inches, -L4- was approximately 0.94 inches, -L5- was about 1.9 inches, -L6- was about 6.2 inches, -L7- was about 5.4 inches, -L8- was about 0.42 inches, - R1- was about 0.25 inch, -R2- was approximately 0.25 inches and -R3- was approximately 0.25 inches. However, other suitable dimensions are contemplated. A 48 gauge metallized polyethylene terephthalate film (i.e., a susceptor film) was bonded to the fabricated product, substantially as shown in Figure 3.

EXAMPLE 4

A fabricated product was formed, according to Figures 1A to 1D, with the following approximate dimensions: -H1- was approximately 0.19 inches, -L1- was approximately 6.0 inches, -L2- was approximately 5.5 inches, -L3- was approximately 0.28 inches, -L4- was approximately 0.94 inches, -L5- was about 1.9 inches, -L6- was about 6.2 inches, -L7- was about 5.4 inches, -L8- was about 0.42 inches, - R1- was about 0.25 inch, -R2- was approximately 0.25 inches and -R3- was approximately 0.25 inches. However, other

ES 2 556 592 T3 suitable dimensions. A 48 gauge metallized polyethylene terephthalate film (i.e., a susceptor film) was bonded to the fabricated product, substantially as shown in Figure 4.

EXAMPLE 5

A fabricated product was formed, according to Figures 1A to 1D, with the following approximate dimensions: -H1- was approximately 0.19 inches, -L1- was approximately 6.0 inches, -L2- was approximately 5.5 inches, -L3- was approximately 0.28 inches, -L4- was approximately 0.94 inches, -L5- was about 1.9 inches, -L6- was about 6.2 inches, -L7- was about 5.4 inches, -L8- was about 0.42 inches, - R1- was about 0.25 inch, -R2- was approximately 0.25 inches and -R3- was approximately 0.25 inches. However, other suitable dimensions are contemplated. A 48 gauge metallized polyethylene terephthalate film (i.e., a susceptor film) was bonded to the fabricated product, substantially as shown in Figure 5.

EXAMPLE 6

A manufactured product according to Figures 6A to 6D was formed with the following approximate dimensions: -H1- was about 0.19 inches, -H2- was about 0.060 inches, -L1- was about 6.0 inches, -L2- was about 5.5 inches, -L3- was about 0, 28 inches, -L4- was about 0.94 inches, -L5- was about 1.9 inches, -L6- was about 6.2 inches, -L7- was about 5.4 inches, -L8- was about 1.0 inch, -L9- was about 0.42 inch, -R1- was about 0.25 inches, -R2- was about 0.25 inches, -R3- was about 0.25 inches, and -R4- was about 0.25 inches. However, other suitable dimensions are contemplated. A 48-gauge metallized polyethylene terephthalate film (i.e., a susceptor film) was attached to the fabricated product, arranged on top of various components, including at least a portion of the top faces -608- of the platforms. 604-.

EXAMPLE 7

A manufactured product according to Figures 7A to 7D was formed, with the following approximate dimensions: -H1- was about 0.19 inches, -H2- was about 0.37 inches, -L1- was about 7.8 inches, -L2- was about 5.2 inches, -L3- was about 1.9 inches, -L4- was about 2.2 inches, -L5- was about 0.94 inches, -L6- was about 1.9 inches, -L7- was about 6.2 inches, - L8- was about 6.4 inches, -L9- was about 6.9 inches, -L10- was about 1.0 inches, -L11- was about 0.19 inches, -R1- was about 0.25 inches, -R2- was about 0.25 inches, -R3- was about 0.25 inches, -R4- was about 0.25 inches, -R5- was about 0.25 inches, -R6- was about 2.3 inches, -R7- was about 1.8 inches, and - A1- was about 18^or. However, other suitable dimensions are contemplated. A 48 gauge metallized polyethylene terephthalate film (i.e., a susceptor film) was attached to the fabricated product, disposed on top of various components, including at least a portion of the top faces -708- of the platforms. 704-.

EXAMPLE 8

A manufactured product according to Figures 8A to 8D was formed with the following approximate dimensions: -H1- was about 0.19 inches, -H2- was about 0.060 inches, -L1- was about 6.0 inches, -L2- was about 5.5 inches, -L3- was about 0, 28 inches, -L4- was about 0.94 inches, -L5- was about 1.9 inches, -L6- was about 6.2 inches, -L7- was about 5.4 inches, -L8- was about 0.42 inches, -L9- was about 1.5 inches, -L10- was about 1.0 inches, -R1- was about 0.25 inches, -R2- was about 0.25 inches, -R3- was about 0.25 inches, and -R4- was about 0.25 inch. However, other suitable dimensions are contemplated. A 48 gauge metallized polyethylene terephthalate film (i.e., a susceptor film) was attached to the fabricated product, disposed on top of various components, including at least a portion of the deck top faces -808- 804-.

EXAMPLE 9

A product manufactured according to Figures 9A to 9E can have the following approximate dimensions: -H1- can be about 0.19 inches, -H2- can be about 0.040 inches, -L1- can be about 6.0 inches, -L2- can be about 5.5 inches, -L3- can be about 0.28 inches, -L4- can be about 0.94 inches, -L5- can be about 6.2 inches, -L6- can be about 5.4 inches, -L7- can be about about 0.42 inch, -L8- can be about 0.75 inch, -R1- can be about 0.25 inches, -R2- can be about 0.25 inches, -R3- can be

ES 2 556 592 T3 about 0.25 inches and -R4- can be about 0.25 inches. However, other suitable dimensions are contemplated. A susceptor film or other microwave energy interactive element may be arranged on at least a portion of the manufactured product.

EXAMPLE 10

A manufactured product according to Figures 10A to 10D was formed, with the following approximate dimensions: -H1- was about 0.27 inches, -H2- was about 0.060 inches, -L1- was about 6.0 inches, -L2- was about 5.7 inches, -L3- was about 0, 17 inches, -L4- was about 1.1 inches, -L5- was about 1.9 inches, -L6- was about 6.2 inches, -L7- was about 5.5 inches, -L8- was about 0.36 inches, -L9- was about 1.5 inches, -L10- was about 1.0 inches, -R1- was about 0.25 inches, -R2- was about 0.25 inches, -R3- was about 0.25 inches, and -R4- was about 0.25 inch. However, other suitable dimensions are contemplated. A 48 gauge metallized polyethylene terephthalate film (i.e., a susceptor film) was attached to the fabricated product, arranged on top of various components, including at least a portion of the top faces -1008- of the platforms - 1004-.

EXAMPLE 11

A manufactured product according to Figures 11A to 11E was formed, with the following approximate dimensions: -H1- was about 0.19 inches, -H2- was about 0.19 inches, -H3- was about 0.25 inches, -H4- was about 0.37 inches, -L1- was about 7.6 inches, -L2- was about 5.4 inches, -L3- was about 2.0 inches, -L4- was about 2.2 inches, -L5- was about 6.6 inches, - L6- was about 6.2 inches, -L7- was about 5.5 inches, -L8- was approximately 6.0 inches, -L9- was approximately 0.19 inches, -R1- was approximately 2.2 inches, -R2- was approximately 1.7 inches, -R3- was approximately 0.50 inches, -R4- was about 0.16 inches, -R5- was about 0.080 inches, -R6- was about 0.25 inches, -R7- was about 0.19 inches, -R8- was about 0.020 inch, -R9- was about 0.25 inch, -A1- was approximately 18^or, -A2- was approximately 30^or and -A3- was approximately 15^or. However, other suitable dimensions are contemplated. A 48-gauge metallized polyethylene terephthalate film (i.e., a susceptor film) was attached to the fabricated product, arranged on top of various components, including at least a portion of the top faces -1118- of the platforms. 1110-.

EXAMPLE 12

A manufactured product according to Figures 12A to 12D was formed with the following approximate dimensions: -H1- was about 0.19 inches, -H2- was about 0.37 inches, -L1- was about 7.8 inches, -L2- was about 5.5 inches, -L3- was about 2.0 inches, -L4- was about 2.2 inches, -L5- was about 1.1 inches, -L6- was about 6.9 inches (square), -L7- was about 6.4 inches (square), -L8- was about 1.0 inches, -L9- was about 6.2 inches (square), -L10- was about 0.19 inches, -R1- was about 2.3 inches, -R2- was about 1.8 inches, -R3- was about 0.50 inches, -R4- was about 0.25 inches, -R5- was about 0.25 inches, -R6- was about 0.19 inches, -R7- was about 0.19 inches, -R8- was about 0.25 inches, - R9- was about 0.25 inch, -R10- was approximately 0.19 inch and -A1- was approximately 18^or. However, other suitable dimensions are contemplated. A 48 gauge metallized polyethylene terephthalate film (i.e., a susceptor film) was attached to the fabricated product, arranged on top of various components, including at least a portion of the top faces -1218- of the platforms. 1210-.

EXAMPLE 13

A product manufactured according to Figures 14A to 14E can be formed with the following approximate dimensions: -H1- can be about 0.25 inches, -H2- can be about 1 inch, -L1- can be about 9.2 inches, -L2- can be about 9.6 inches, -L3- can be about 9.2 inches, -L4- can be about 7.0 inches, -L5- can be about 8.5 inches, -L6- can be about 7.0 inches, -L7- can be about about 6.6 inches, -L8- can be about 4.4 inches, -L9- can be about 5.9 inches, -L10- can be about 0.19 inches, -L11- can be about 6.7 inches, -L12- can be about 6.4 inches, -L13 - can be about 4.2 inches, -L14- can be about 5.6 inches, -R1- can be about 1.3 inches, -R2- can be about 1.1 inches, -R3- can be about 1.1 inch, -R4- can be about 0.78 inch, -R5- can be about 0.56 inches, -R6- can be about 0.48 inches, -R7- can be about

ES 2 556 592 T3 about 0.25 inches, -R8- can be about 0.25 inches and -A1- can be about 21^or. Other suitable dimensions are contemplated. A susceptor film or other microwave energy interactive element may be disposed on at least a portion of the manufactured product.

EXAMPLE 14

<td> 9,6</td><td>inches, -L3- can</td><td>to be</td><td>from</td><td>approximately</td><td> 9,2</td><td>inches,</td><td>-L4- can</td><td>to be</td><td>from</td>

<td> 7,0</td><td>inches, -L5- can</td><td>to be</td><td>from</td><td>approximately</td><td> 8,5</td><td>inches,</td><td>-L6- can</td><td>to be</td><td>from</td>

<td> 1,0</td><td>inches, -L7- can</td><td>to be</td><td>from</td><td>approximately</td><td> 7,0</td><td>inches,</td><td>-L8- can</td><td>to be</td><td>from</td>

<td> 6,6</td><td>inches, -L9- can</td><td>to be</td><td>from</td><td>approximately</td><td> 4,4</td><td>inches, -</td><td>L10- can</td><td>to be</td><td>from</td>

<td> 5,9</td><td>inches, -L11- can</td><td>to be</td><td>from</td><td>approximately</td><td> 0,2</td><td>inches,</td><td>-L12- can</td><td>to be</td><td>from</td>

<td> 6,7</td><td>inches, -L13- can</td><td>to be</td><td>from</td><td>approximately</td><td> 6,4</td><td>inches,</td><td>-L14- can</td><td>to be</td><td>from</td>

<td> 4,2</td><td>inches, -L15- can</td><td>to be</td><td>from</td><td>approximately</td><td> 5,6</td><td>inches,</td><td>-R1- can</td><td>to be</td><td>from</td>

<td> 1,3</td><td>inches, -R2- can</td><td>to be</td><td>from</td><td>approximately</td><td> 1,1</td><td>inches,</td><td>-R3- can</td><td>to be</td><td>from</td>

<td> 1,1</td><td>inches, -R4- can</td><td>to be</td><td>from</td><td>approximately</td><td> 0,78</td><td>inches,</td><td>-R5- can</td><td>to be</td><td>from</td>

<td> 0,56</td><td>inches, -R6- can</td><td>to be</td><td>from</td><td>approximately</td><td> 0,25</td><td>inches,</td><td>-R7- can</td><td>to be</td><td>from</td>

<td> 0,25</td><td>inches, -R8- can</td><td>to be</td><td>from</td><td>approximately</td><td> 0,25</td><td>inches and</td><td>-A1- can</td><td>to be</td><td>from</td>

A product manufactured according to Figures 15A to 15F can be formed with the following approximate dimensions: -H1- can be about 0.25 inches, -H2- can be about 0.063 inches, -H3- can be about 1.0 inches, -L1- can be about 9.2 inches, -L2- can be about about about about about about about about about about about about about 21^or. Other suitable dimensions are contemplated. A susceptor film or other microwave energy interactive element may be disposed on at least a portion of the manufactured product.

EXAMPLE 15

<td> 9,6</td><td>inches, -L3- can</td><td>to be</td><td>from</td><td>approximately</td><td> 9,2</td><td>inches,</td><td>-L4- can</td><td>to be</td><td>from</td>

<td> 7,0</td><td>inches, -L5- can</td><td>to be</td><td>from</td><td>approximately</td><td> 8,5</td><td>inches,</td><td>-L6- can</td><td>to be</td><td>from</td>

<td> 1,0</td><td>inches, -L7- can</td><td>to be</td><td>from</td><td>approximately</td><td> 7,0</td><td>inches,</td><td>-L8- can</td><td>to be</td><td>from</td>

<td> 6,6</td><td>inches, -L9- can</td><td>to be</td><td>from</td><td>approximately</td><td> 4,4</td><td>inches, -</td><td>L10- can</td><td>to be</td><td>from</td>

<td> 5,9</td><td>inches, -L11- can</td><td>to be</td><td>from</td><td>approximately</td><td> 0,2</td><td>inches,</td><td>-L12- can</td><td>to be</td><td>from</td>

<td> 6,7</td><td>inches, -L13- can</td><td>to be</td><td>from</td><td>approximately</td><td> 6,4</td><td>inches,</td><td>-L14- can</td><td>to be</td><td>from</td>

<td> 4,2</td><td>inches, -L15- can</td><td>to be</td><td>from</td><td>approximately</td><td> 5,6</td><td>inches,</td><td>-R1- can</td><td>to be</td><td>from</td>

<td> 1,3</td><td>inches, -R2- can</td><td>to be</td><td>from</td><td>approximately</td><td> 1,1</td><td>inches,</td><td>-R3- can</td><td>to be</td><td>from</td>

<td> 1,1</td><td>inches, -R4- can</td><td>to be</td><td>from</td><td>approximately</td><td> 0,78</td><td>inches,</td><td>-R5- can</td><td>to be</td><td>from</td>

<td> 0,56</td><td>inches, -R6- can</td><td>to be</td><td>from</td><td>approximately</td><td> 0,25</td><td>inches,</td><td>-R7- can</td><td>to be</td><td>from</td>

<td> 0,25</td><td>inches, -R8- can</td><td>to be</td><td>from</td><td>approximately</td><td> 0,25</td><td>inches and</td><td>-A1- can</td><td>to be</td><td>from</td>

A product manufactured according to Figures 16A to 16F can be formed with the following approximate dimensions: -H1- can be about 0.25 inches, -H2- can be about 0.063 inches, -H3- can be about 1.0 inches, -L1- can be about 9.2 inches, -L2- can be about about about about about about about about about about about about about 21^or. Other suitable dimensions are contemplated. A susceptor film or other microwave energy interactive element may be disposed on at least a portion of the manufactured product.

EXAMPLE 16

A product manufactured according to Figures 17A to 17E can be formed with the following approximate dimensions: -H1- can be about 0.25 inches, -L1- can be about 7.9 inches, -L2- can be about 1.0 inches, -L3- can be about 6.0 inches, -L4 - can be about 6.4 inches, -R1- can be about 0.70 inches, -R2- can be about 0.54 inches, -R3- can be about 0.36 inches, -R4- can be about 9.0 inches, -R5- can be about 0.25 inches, -R6- can be about 0.50 inches, -R7- can be about 0.25 inches and -A1- can be about 45 inches.^or. Other suitable dimensions are contemplated. A susceptor film or other microwave energy interactive element may be disposed on at least a portion of the manufactured product.

EXAMPLE 17

A product manufactured according to Figures 18A to 18E can be formed with the following approximate dimensions:

-H1- can be about 0.25 inches, -L1- can be about 7.9 inches, -L2- can be about 1.0 inches, -L3- can be about 6.0 inches, -L4 - can be about 6.4 inches, -R1- can be about 0.70 inches, -R2- can be about 0.54 inches, -R3- can be about 0.36 inches, -R4- can be about 9.0 inch, -R5- can be about 0.25 inch, -R6- can be

ES 2 556 592 T3 about 0.50 inches, -R7- can be about 0.25 inches, -A1- can be about 45^or and -A2- can be approximately 18^or. Other suitable dimensions are contemplated. A susceptor film or other microwave energy interactive element may be disposed on at least a portion of the manufactured product.

EXAMPLE 18

A product manufactured according to Figures 19A to 19E can be formed with the following approximate dimensions: -H1- can be about 1.0 inches, -H2- can be about 0.25 inches, -L1- can be about 10 inches, -L2- can be about 8.6 inches, -L3- can be about 7.5 inches, -L4- can be about 1.0 inches, -L5- can be about 0.12 inches, -L6- can be about 7.9 inches, -L7- can be about about 7.5 inches, -L8- can be about 5.3 inches, -L9- can be about 6.7 inches, -L10- can be about 8.3 inches, -L11- can be about 7.9 inches, -L12- can be about 5.7 inches, -L13- can be about 7.2 inches, -R1- can be about 1.3 inches, -R2- can be about 1.1 inches, -R3- can be about 1.1 inches, -R4- can be about 0, 78 inch, -R5- can be about 0.56 inch, -R6- can be about 0.25 inches, -R7- can be about 0.25 inches, -R8- can be about 0.50 inches, -R9- can be about 0.25 inches, -R10- can be about 0.25 inch and -A1- can be about 20^or. Other suitable dimensions are contemplated. A susceptor film or other microwave energy interactive element may be disposed on at least a portion of the manufactured product.

EXAMPLE 19

A product manufactured according to Figures 20A to 20D can be formed with the following approximate dimensions: -H1- can be about 0.25 inches, -H2- can be about 0.060 inches, -H3- can be about 0.63 inches, -L1- can be about 11 inches, -L2- can be about 10 inches, -L3- can be about 1.4 inches, -L4- can be about 9.4 inches, -L5- can be about 10 inches, -R1- can be about 60 inches, -R2- can be about 0.030 inch, -R3- can be about 60 inches, -R4- can be about 0.25 inches, -R5- can be about 0.25 inches, -R6- can be about 0.25 inches, and -A1- can be about 0.25 inches. about 17^or. Other suitable dimensions are contemplated. A susceptor film or other microwave energy interactive element may be disposed on at least a portion of the manufactured product.

EXAMPLE 20

A product manufactured according to Figures 21A to 21D can be formed with the following approximate dimensions: -H1- can be about 0.25 inches, -H2- can be about 0.47 inches, -L1- can be about 6.1 inches, -L2- can be about 5.7 inches, -L3 - can be about 0.16 inches, -L4- can be about 1.0 inches, -L5- can be about 5.1 inches, -R1- can be about 16 inches, -R2- can be about 0.020 inch, -R3- can be about 0.25 inch, -R4- can be about 0.25 inches, -R5- can be about 0.25 inches, -R6- can be about 16 inches, and -A1- can be about 12 inches.^or. Other suitable dimensions are contemplated herein. A susceptor film or other microwave energy interactive element may be disposed on at least a portion of the manufactured product.

EXAMPLES 21 TO 32

Commercially available Lean Cuisine and Corner Bistro frozen panini-type sandwiches were evaluated using various trays and microwave ovens. Each sandwich was heated at full power for approximately 3 minutes and 20 seconds unless otherwise noted. The results of the evaluations are presented in Table 1, where:

Control disk = a corrugated cardboard with a susceptor arranged on top of a surface and six elongated openings with elongated, rounded ends, extending through the thickness of the disk (arranged with the food items);

LC = Lean Cuisine;

CB = Corner Bistro;

ES 2 556 592 T3

A = Amana 1000 W, 0.9 cu ft, 12.5 inch turntable diameter;

B = Panasonic 1,100 W, 1.0 cu. Ft., 13.5-inch turntable diameter;

C = Panasonic 1200 W, 0.9 cu ft, 13.5 inch turntable diameter;

D = Amana Radarange 1,000 W, 1.1 cu. Ft., No turntable;

E = Panasonic 800 W, 0.7 cu. Ft., 9.5-inch turntable diameter;

F = Samsung 700W, 0.7 cu. Ft., 11-inch turntable diameter; Y

G = Panasonic 1,100 W, 1.1 cu ft, 14 inch turntable diameter. (cooking time increased to 4 minutes);

and where:

= no browning and / or roasting;

= optimal browning and / or browning; Y

1, 2, 3, 4, 5 and 6 = several intermediate degrees of browning and / or toast between 0 and 7.

ES 2 556 592 T3

Table 1

<td>e π Jg £ § &lt;® sessFo »ü) i, B Pr ϊϊ Π EL c ™ ® e | AND Φ amw&gt; ₌ qj •OR</td><td>r-</td><td>*or</td><td>m</td><td>or</td><td>Ό</td><td>ra</td><td>cp</td><td>r-</td><td>Ό</td><td>or</td><td></td><td>Ό</td><td>n</td>

<td>YES'sS " Sh8g |</td><td></td><td></td><td>co</td><td>r-</td><td>Γ-</td><td>fM</td><td>C * 1</td><td>ι / Ί</td><td>r—</td><td></td><td></td><td>n</td><td>n in</td>

<td>§ ra gg. £ .! · O ™ 2 = £ í Oi · ~ · -C = p 3 (W gíSt you a «ra</td><td>'T</td><td></td><td> &amp;</td><td>rj</td><td> &amp;</td><td> -</td><td>tN</td><td></td><td></td><td> 1</td><td>Φ</td><td>t</td><td>ra</td>

<td>= «'S z to E ™ to Ξ JS &lt;j 5? ή ft φ n E = i = ω ffi Q. (U</td><td></td><td></td><td></td><td> 1</td><td> 1</td><td> 1</td><td>I</td><td>fn</td><td>F-</td><td>iO</td><td> —</td><td>Γ-</td><td>You</td>

<td>= ift « o π ffl - m &lt;JE TI f¹* _. ra E «« = TS &lt;js? £ 5⁰¹ E § ™ z S · ra - ω qj m ° · «</td><td></td><td></td><td></td><td></td><td> 1</td><td></td><td>P</td><td>- &lt;r</td><td>m</td><td>V</td><td>fl</td><td>r-</td><td> 5</td>

<td>Can tray and narrowed platforms (figure 2, example 2)</td><td>IN</td><td>&lt;^ l</td><td>ΙίΊ</td><td>tn</td><td> -</td><td>Γ * Ί</td><td></td><td>V</td><td>r</td><td> 1</td><td></td><td>P</td><td>n</td>

<td>5* -. eo to J = uc to o O °</td><td>OR</td><td>or</td><td>OR</td><td>C3</td><td>or</td><td>or</td><td>or</td><td>or</td><td>M</td><td>m</td><td>or</td><td> —</td><td>wn</td>

<td>ω ú&gt; π Ό ό Ü h</td><td> &lt;</td><td>Io</td><td>or</td><td>α</td><td>ω</td><td>tJLl</td><td>C</td><td> &lt;</td><td>to</td><td>or</td><td> &lt;</td><td></td><td>k</td>

<td>- e p φ £ k ® ΪΞ * &lt; </td><td> 8</td><td> 8</td><td> 8</td><td> 8</td><td></td><td>go</td><td> 8</td><td>D2 u</td><td>Λ Or</td><td>ra U</td><td> 8</td><td> 8</td><td>j</td>

<td>or to. E to UJ</td><td>ri</td><td>Γ4 CN</td><td>ΓΊ ÍS</td><td>τΓ ri</td><td>CM</td><td></td><td>f 'rJ</td><td>00 r4</td><td colspan="2">1 c-Jo</td><td>r-&gt;</td><td>rj in</td><td>ü ΐ a E α k_ 0-</td>

ES 2 556 592 T3

EXAMPLE 33

Commercially available Stouffer's Corner Bistro roast chicken Italian panini frozen sandwiches were heated using various trays to compare the level of browning achieved on the surface of the food item.

A first sandwich was placed in an open face configuration on the susceptor disk arranged with the sandwich (referred to as a Control Disk in Examples 21 to 32). The sandwich was heated, per package directions, for 3 minutes in a Panasonic 1,100 W microwave oven.

A second sandwich was heated for 3 minutes in the same 1,100 W Panasonic microwave oven, using a tray according to the invention, substantially such as that shown in Figures 8A to 8D, with the dimensions provided in Example 8.

A Konica Minolta BC-10 Baking Meter with an aperture size of approximately 7/16 inches (0.4375 inches) was used to measure the level of browning on the surface of each piece of bread at the indicated positions, such as is schematically indicated in Figure 23. Measurements taken at each position were averaged for the two pieces of bread in each sandwich. The results are presented in Baking Contrast Units (BCU), in which the lower the BCU, the darker the color (that is, the higher the degree of browning). The results of the evaluation are presented in Table 2.

Table 2

<td>Position</td><td>Control disc</td><td>Experimental disc</td>

<td> 1</td><td> 3,85</td><td> 2,85</td>

<td> 2</td><td> 3,88</td><td> 2,67</td>

<td> 3</td><td> 3,40</td><td> 1,95</td>

<td> 4</td><td> 3,67</td><td> 2,77</td>

<td> 5</td><td> 3,92</td><td> 3,33</td>

<td> 6</td><td> 3,90</td><td> ¿88</td>

<td> 7</td><td> 4,02</td><td> 3,39</td>

<td> 8</td><td> 4.10</td><td> 3,24</td>

<td> 9</td><td> 4,09</td><td> 3,55</td>

<td> 10</td><td> 4,03</td><td> 2,14</td>

<td>Average BCU</td><td> 3,90</td><td> 2,96</td>

Although certain embodiments of the invention have been described with a certain degree of particularity, those skilled in the art could make numerous modifications to the disclosed embodiments, without departing from the scope of this invention as defined in the appended claims. All directional references (for example, top, bottom, up, down, left, right, left, right, up, down, over, under, vertical, horizontal, clockwise, and counterclockwise) are used for identification purposes only to aid the reader's understanding of the various embodiments of the present invention, and do not create limitations, particularly in relation to position, the orientation or use of the invention, unless specifically indicated in the claims. Junction references (eg, joined, attached, coupled, connected, and the like) are to be interpreted broadly and may include intermediate elements between a connection of elements, and relative movement between the elements. Thus, the joining references do not necessarily imply that two elements are directly connected and in fixed relation to each other.

Those skilled in the art will recognize that the various elements described with reference to the various embodiments can be interchanged to create entirely new embodiments that are within the scope of the present invention. It is envisioned that all matter contained in the foregoing description or shown in the accompanying drawings should be construed as illustrative only and not limiting. Changes in detail or structure may be made without departing from the invention as defined in the appended claims. The detailed description set forth herein is not intended, nor should it be construed to limit the present invention or to exclude any such other embodiments, adaptations, variants, modifications, and equivalent arrangements of the present invention, as defined in the attached claims

Accordingly, as will be readily understood by those skilled in the art, in light of the above detailed description of the invention, the present invention is capable of wide utility and application. Many adaptations of the present invention other than those described herein, as well as many

ES 2 556 592 T3 variants, modifications and equivalent arrangements will be apparent, or reasonably suggested by the present invention and the detailed description thereof above, without departing from the essence or scope of the present invention, as defined in the appended claims.

While the present invention is described in detail herein in relation to specific aspects, it should be understood that this detailed description is illustrative and exemplary of the present invention only, and is made solely for the purpose of providing a complete description. and that makes the present invention possible. The detailed description set forth herein is not intended, nor should it be construed to limit the present invention or to exclude any such other embodiments, adaptations, variants, modifications, and equivalent arrangements of the present invention.