Container and valve assembly for storing and dispensing substances, and related method

ES 2 355 487 T3

DESCRIPTION

BACKGROUND OF THE INVENTION

1. Field of Invention

The object of the invention relates to containers for dispensing liquid, creamy, pasty or similar products and, more specifically, to improved containers that include one-way valves and collapsible and / or twistable tubes that keep the product in an airless atmosphere. or sterile during repeated dispensing and associated procedures for the manufacture and use of such packages and valve assemblies.

2. Background of the Related Art

Flexible tubes are used to store a variety of powder, liquid, gel, creamy and pasty products that have a wide variety of viscosities. Generally, flexible tubes have a cap that is removed to expose a simple discharge opening. As a consequence, low pressure is necessary to allow its content to escape. It is common for the discharge opening to become clogged as product seeps or builds up in it. Furthermore, when the traditional tube is opened, the contents are not only subjected to the environment, but also a quantity of air is normally drawn into the tube. Therefore, despite the sterilization techniques of food and other products, including the use of preservatives, they cannot prevent the degradation of many products, thus limiting the shelf life and the range of products suitable for dispensing by means of of tubes. For tubes that dispense multiple doses, even refrigeration after opening cannot prevent further degradation of the product. Perishable items, however, have a limited shelf life. In view of the above, one solution has been to establish sterile package rations or doses in smaller portable quantities, such as individual serving packages of ketchup, mustard, and mayonnaise.

Similarly, many cosmetic, dermatological, pharmaceutical and / or parapharmaceutical products and other substances are packaged in dispensers or other packages that expose the product to air after the initial opening and / or dispensing of the product. As a consequence, such products must include preservatives in order to prevent the product remaining in the container from spoiling or otherwise degrading between uses. Furthermore, such products typically have to be used within a relatively short period of time after opening in order to prevent the product from being damaged or otherwise degraded prior to use. One of the drawbacks associated with preservatives is that they can produce an allergic or other undesirable reaction or effect in the user. In addition, preservatives do not prevent bulk product stored in an open container from accumulating, and in some cases, facilitating the growth of germs. Many of the dispensers

ES 2 355 487 T3 mentioned in the prior art expose the bulk product contained in the dispenser to the air once opened, and thus expose the bulk product to bacteria, germs and / or other impurities during and / or after the application of the product, thus allowing the contamination of the product that remains in the dispenser and spreading bacteria, germs or impurities with the subsequent use of the product. For example, liquid lipstick is especially unsuitable for dispensing from prior art containers. Liquid lipstick becomes contaminated, evaporates due to the passage of air losing moisture, and is finally unusable if not unsafe before the end of the use of the product. The tips become contaminated, dirty and sticky or crusty also leaving the lipstick to continue to ooze when not in use.

In view of the above, various packages have been provided with closure devices such as one-way valves. A drawback associated with prior art dispensers that include one-way valves is that the valves are frequently designed to operate with mechanical pumps or similar actuators that are capable of creating relatively high valve opening pressures. Examples of dispensers of this type are illustrated in US Pat. USA: RE numbers 37,047, 6, 032,101, 5, 944,702, and 5,746,728 and in the US publications: numbers US2002 / 0074362Al, US2002 / 0017294Al. On the other hand, squeeze tube type dispensers are not capable of creating the necessary valve opening pressures and therefore such prior art valves do not operate effectively with squeeze tubes.

In US Patent No. 4,099,651 a closure device is collected which is mounted on the end of a collapsible tube or cartridge dispenser through which liquid or soft solid substances can be dispensed. The closure device allows the concrete substance to flow through only when the tube is squeezed, and it closes automatically to prevent further flow of the substance when the compressive pressure ceases. The closure element includes a tubular tip mounted on the mouth of the collapsible tube. The distal end of the tip is flattened and an aperture is provided on one or both sides of the flattened end of the tip, the aperture extending into the tip. A flexible sleeve with an open termination sits over the flattened end of the tip and over the opening, and the sleeve typically has a closed hole at its distal end to seal the opening and hold the particular substance in the tube. However, when pressure is applied to the collapsible tube, the substance in the tube is forced through the openings in the tip, and between the flattened end of the tip and the sleeve, to be dispensed through the hole in the end of the sleeve. whenever pressure is applied to the tube.

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In view of the disclosure of US Patent No. 4,099,651, it is an object of the present invention to overcome one or more of the above-described drawbacks and drawbacks of the prior art by improving the hermetic sealing of a dispenser in the 'closed position as well as avoiding entrances during dispensing, supplying the same time the most accurate dosage.

SUMMARY OF THE INVENTION

A presently preferred embodiment of the container or dispenser of the present invention comprises a tube for storing a product. The tube is coupled in fluid communication with a nozzle to dispense the product from the package. The nozzle acts as a one-way valve to allow the product to pass through it and prevent the passage of fluids in the opposite direction. The one-way valve is preferably formed of an inner body part and a flexible cover that covers the inner body part and creates the one-way valve at the interface of the inner body part and the flexible cover.

In accordance with another aspect of the present invention, a tube and valve assembly for storing and dispensing a substance contained therein includes a tube having a collapsible tubular body consisting of a storage chamber for receiving and storing the substance, and a head located at one end of the tubular body. The head consists of a neck and a first axially extending passage formed therethrough which is engaged in fluid communication with the storage chamber of the tubular body and defines an unobstructed flow path that extends axially between them. A one-way valve device is head mounted and includes a valve body having a body base defining a second axially coupled outlet passageway in fluid communication with the first axially extended passageway and defining a non-flow path. obstructed that extends axially therebetween. The one-way valve device further includes an axially extending valve seat defining a diameter less than the diameter of the body base, a substantially frusto-conical or tapered first portion extending between the body base and the seat. of the valve, and a set of flow openings extending axially through the first portion contiguous to the valve seat and angularly spaced from one another. A valve cover is formed of an elastic material that defines a predetermined modulus of elasticity, and includes a cover base mounted on the base of the body and fixedly secured against axial displacement relative thereto. The base of the cover has a diameter less than a diameter of the base of the body so as to form a press fit between them. A portion of the valve covers the valve seat and defines a predetermined radial thickness and diameter less than a valve seat diameter to thereby form a press fit between them. The part of the

ES 2 355 487 T3 valve and valve seat define an annular valve opening therebetween which extends axially, normally closed, and the valve part is radially movable between a normally closed position engaging the valve part to the grabbing the valve, and an open position with a segment of the valve portion radically spaced apart from the valve seat to allow the passage of substance therebetween at a predetermined valve opening pressure. A second substantially frusto-conical or tapered portion extends between the base of the cover and the valve portion, overlaps the first substantially frusto-conical or tapered part of the body, and forms a press fit therebetween. At least one of the following parameters: the diameter of the valve seat, a degree of interaction between the valve cover and the valve seat, the predetermined radial thickness of the valve part, and a predetermined modulus of elasticity of the material covering the valve, is selected to (i) define a predetermined valve opening pressure generated after manual compression of the tube that allows the substance to pass from the storage chamber through the valve opening, and (2) hermetically seal the valve and prevent bacteria from entering through the valve and into the tube in the normally closed position.

An advantage of the present invention is that the nozzle substantially prevents the entry of air, other gases or vapors or bacteria through or otherwise into the tube during dispensing. As a consequence, the containers can keep the substances contained in a sterile atmosphere and / or without air during substantial periods of storage, shelf life and / or use. Consequently, the packages of the present invention are especially suitable for dispensing multiple doses of sterile and / or non-preserved (or "preservative-free") products or other substances that require storage in an airless atmosphere.

Another advantage of the present invention is that at least one of the following parameters is the diameter of the valve, a degree of interaction between the valve cover and the valve seat, the predetermined radial thickness of the valve part, and a predetermined modulus of elasticity of the valve cover material, is selected to (i) define a predetermined valve opening pressure generated after manually pressing the tube allowing the substance to pass from the storage chamber through the valve opening, and (2) hermetically sealing the valve and prevent bacteria from entering through the valve and into the tube in the normally closed position. Consequently, contrary to the prior art valves described above, the tube and valve assembly of the present invention allows a sufficiently low valve opening pressure that the substance can be dispensed through the valve by manually pressing the tube. , to

ES 2 355 487 T3 once the valve hermetically seals the tube and prevents the entry of bacteria or other impurities into the tube.

Other advantages of the presently preferred embodiments of the present invention is that the seal formed by the nozzle substantially prevents any partial spillage of the material during storage or shelf life. Another advantage of the one-way valve device is that after dispensing, the product does not remain in the one-way valve which could cause poor sealing and potential contamination. Furthermore, the one-way valve employed in the preferred embodiments of the present invention maintains the interior of the tube in a hermetically sealed atmosphere throughout storage. shelf life of storage and / or use of the container.

Yet another advantage of the present invention is that because the product can be kept in an atmosphere with no air in the tube, the packages can be used in virtually any orientation, and furthermore, they can be used in low gravity environments. Another advantage is the ability to optimize valve opening pressure for flow, ease of use, and a desired valve opening pressure for products of varying viscosities.

Furthermore, the present invention is scalable, which is useful when storing large quantities of product having a long shelf life. Another advantage of currently preferred embodiments of the present invention is that the flow path is substantially linear allowing for a more consistent flow rate and product velocity. The linear flow path also helps avoid cavities in which viscous material could become entrapped. or even create a flow path from a source of contamination.

Other objects and advantages of the preferred embodiments of the present invention will become readily apparent in view of the following detailed description taken in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

For those skilled in the art to whom the disclosed invention pertains to more easily understand how to make and use it, reference may be made to the drawings in which: Figure 1 illustrates a perspective view of the embodiment of a container of the present invention to store and discharge a substance from a sterile environment.

Figure 2 illustrates a side view of the container of Figure 1 with the lid removed.

Figure 3 illustrates a partially fragmented perspective view of the container of Figure 1. Figure 4 illustrates an enlarged partially fragmentary perspective view of the nozzle of the container of Figure 1.

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Figure 4B illustrates a cross section of another nozzle with an O-ring seal of one embodiment of the container of the present invention for storing and discharging a substance from a sterile environment.

Figure 5 illustrates a perspective view of another embodiment of the container of the present invention for storing and discharging a substance from a sterile environment.

Figure 6 illustrates a partial side view of the container of Figure 5.

Figure 7 illustrates a partially fragmented perspective view of the container of Figure 5. Figure 8 illustrates a partially fragmented perspective view of the nozzle of the container of Figure 5.

Figure 8B illustrates a partial cross-sectional view of another nozzle with a flexible rim embodiment of a container of the present invention for storing and discharging a substance from a sterile environment.

Figure 9 illustrates a perspective view of another embodiment of the container of the present invention for storing and discharging a substance from a sterile environment.

Figure 10 illustrates a partial perspective view of the container of Figure 9.

Figure 11 illustrates a partial side elevation view of the container of Figure 9.

Figure 12 illustrates an enlarged partially fragmented view of the nozzle of the container of Figure 9.

Figure 12A illustrates a somewhat schematic view of a nozzle similar to the nozzle of the container of Figure 9 where the nozzle is at rest.

Figure 12B illustrates a somewhat schematic cross-sectional view of a nozzle similar to the nozzle of the container of Figure 9 where the nozzle is beginning to have pressure. Figure 12C illustrates a somewhat schematic cross-sectional view of a nozzle similar to the nozzle of the container of Figure 9 where the nozzle is discharging the substance.

Figure 13 illustrates a partially fragmented perspective view of the nozzle of the container of Figure 9.

Figure 14 illustrates an enlarged partially fragmented perspective view of the nozzle of the container of Figure 9.

Figure 15 illustrates another partially fragmented perspective view of the nozzle of the container of Figure 9.

Figure 15A illustrates a partial cross-sectional view of the nozzle tip of the container of Figure 9.

Figure 15B illustrates a schematic perspective view of a part of a valve cover for the nozzle of the container of Figure 9.

Figure 15C illustrates another cross-sectional view of the nozzle of the container of Figure 9.

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Figure 15D illustrates a schematic of the nozzle of the container of Figure 9.

Figure 16 illustrates a cross sectional view of another nozzle of a container for storing and discharging a substance from a sterile environment and embodiment of the present invention.

Figure 17 illustrates a schematic of the nozzle of Figure 16.

Figure 18 illustrates a cross-sectional view of another nozzle of a container for storing and discharging a substance from a sterile environment and embodiment of the present invention.

Figure 19 illustrates a cross-sectional view of another container for storing and discharging a substance from a sterile environment and embodiment of the present invention.

Figure 20A illustrates a side elevational view of another container for storing and discharging a substance from a sterile environment and embodiment of the present invention.

Figure 20B illustrates a schematic of the package of Figure 20A. Figure 20C illustrates the cartridge of the package of Figure 20A.

Figure 20D illustrates the outer cover of the container of Figure 20A.

Figure 21A illustrates a schematic front view of another container for storing and discharging a substance from a sterile environment and embodiment of the present invention.

Figure 21B illustrates a schematic side view of the container of Figure 21A.

Figure 22A illustrates a schematic front view of another container for storing and discharging a substance from a sterile environment and embodiment of the present invention.

Figure 22B illustrates a schematic side view of the container of Figure 22A.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

The advantages and other aspects of the invention disclosed herein will become more readily apparent to those skilled in the art from the following detailed description of certain preferred embodiments taken in conjunction with the drawings illustrating representative embodiments of the present invention and in which Similar reference numbers identify similar structural elements.

Referring to Figures 1-4, the container referenced at 100 includes a nozzle 102 and a body 104 depending on the size of the nozzle 102. The body 104 defines an interior containing a creamy liquid product, pasty or other (not shown) to be dispensed. To make the container 100, the body 104 and the nozzle 102 are sterilized, the body 104 is filled with the product, such as perishable food, cosmetic, household, pharmaceutical, pharmaceutical cosmetic, parapharmaceutical, medicinal or other product or substance, and the Nozzle 102 is attached to isolate the contents of body 104 from the atmosphere. Preferably, after closure of container 100, the contents are sterilized by a suitable procedure such as gamma radiation and the like as will be appreciated by those skilled in the applicable art. However, as you can see the

According to the teachings herein, the container 100 and the product contained therein may be sterilized, if desired, in any of the numerous ways that are currently or later known to be perform this function. For example, the product can be sterilized at the end of the process, the product can be sterilized before filling the container, or the product can be sterilized in-line during the filling of the container.

A cap 106 is screwed onto the nozzle 102 to prevent unintended discharge of the product. In order to dispense the product, the cap 106 is removed and pressure is applied to the body 104 by hand squeezing the body 104 and, in turn, the nozzle 102 to allow discharge of the product. The nozzle 102 discharges the product without exposing the remaining product to the external atmosphere; in this way, the sterility and / or airless atmosphere of the interior of the body 104 is maintained and the shelf life of the product is not reduced. In addition, bacteria or other contaminants are prevented from passing through the valve and into the body 104, as described in more detail below.

Body 104 is a tube with a closed end 108 defining a normally closed seal and an open end 110 for sealingly connecting to nozzle 102. As shown in Figures 3 and 4, the open end 110 has a neck 111 that defines an outlet 113 therethrough for unloading the product. Threads 115 around the circumference of neck 111 couple body 104 to nozzle 102. Preferably, body 104 is collapsible such that a high percentage of the product within it can be easily utilized. Body 104 can be all plastic, aluminum, a combination of both, and / or various other suitable materials well known to those skilled in the art now and those to be discovered later. In one embodiment of the present invention, body 104 is made from a coextruded sheet containing various combinations of LDPE, LLDPE, HDPE, tackifying resins, and a merálica sheet. Body 104 can be tailored to the application, eg, by color, shape, decoration , coatings, and the like. Additionally, container 100 can be sized to be portable or otherwise as desired. Preferably, body 104 also forms a barrier to oxygen, moisture, loss of flavor, and the like.

The product contained in the package can be any of many different types of cosmetics, such as eye and lip treatment, such as, for example, lip gloss, eye colors, eye gloss, eye shadow, color of lips, moisturizers and makeup, such as foundation, blemish corrector, gloss control, shine-reducing makeup, and makeup that minimizes wrinkles, personal hygiene items such as lotions, creams, and ointments, Oral hygiene items such as toothpaste, mouthwash, and / or soda

ES 2 355 487 T3 cants, pharmaceutical products such as prescription and over-the-counter drugs, dermatological products, such as products for the treatment of acne, rosacea, and pigmentation disorders, parapharmaceutical products, such as moisturizers, sunscreens, anti-wrinkle creams , and alopecia treatments; functional foods, other free-shipping products, household items such as adhesives, glues, paints and cleaners, industrial items such as lubricants, dyes, and compounds, and food items such as frosting, cheese, yogurt, milk, tomato paste, and baby food, and condiments, such as mustard, ketchup, mayonnaise, jellies, and syrups. As may be recognized by those skilled in the applicable art in accordance with the teachings herein, this list is intended to serve as an example and is in no way limiting.

Preferably, the cap 106 is made of plastic. Preferably, lid 106 prevents unwanted discharge of product from container 100. Additional features to evidence counterfeiting may be included to comply with FDA guidance as will be appreciated by those skilled in the applicable art. Container 100 can also be boxed for ease of handling and safety.

In order to better understand the operation of the container 100, the structure and operation of the nozzle 102 will now be described in detail. The nozzle 102 is for product discharge upon application of manual pressure to the body 104 by pressing the body in a conventional manner, such as pressing the body on opposite sides to each other and consequently transmitting a substantially radially inwardly directed force. of the body. The pressure of the product or other substance contained in the body is increased until the pressure is greater than the opening pressure of the nozzle 102 to consequently dispense the product from the interior of the container through the nozzle. The nozzle 102 includes an outer body or valve cover 112 at a distal end or tip, and an inner body 114 having a distal end or tip that defines a valve seat that is coupled to the outer body or valve cover 112. The inner body 114 further defines a proximal end coupled to the body 104. An intermediate portion of the interior of the body 114 defines circumferential threads 116 for engaging the threads 118 of the cap. The proximal portion of the inner body 114 defines internal threads 120 to engage the threads 115 of the body.

The outer body or valve cover 112 receives a portion of the inner nozzle or tip 124 that defines the valve seat of the inner body 114. As shown in Figure 4, the interaction of the outer body 112 and the inner nozzle portion 124 defines a joint 125 that is normally closed (i.e., the drawings show the inner and outer portions of the nozzle abutting each other. ), but it can be opened by the flow of product at sufficient pressure (i.e. pressure equal to or greater than the opening pressure of the valve) in the

ES 2 355 487 T3 junction 125 to discharge product through nozzle 102. Preferably, outer body 112 is molded from a relatively flexible plastic material compared to inner body 114. In this manner, the outer body 112 can flex with respect to the inner portion 124 of the nozzle to open the closure 125 and discharge the product through the nozzle 102.

As shown in Figure 4, inner body 114 includes an annular flange 126 that fits within a corresponding recess of outer body 112, to fit inner body 114 within outer body 112 and secure the outer body or valve cover against. axial movement. Therefore, the inner body 114 is pressed into the outer body 112 and coupled to the outer body guiding the flange 126 into the corresponding recess. Annular flange 126 also substantially prevents unwanted flow of product between annular flange 126 and outer body 112. As those skilled in the art will recognize, inner body 114 may be molded as an integral part of body 104.

As shown in Figures 3 and 4, inner body 114 includes a substantially cylindrical first wall 136 that essentially defines a hollow shaft projection in the axial direction of container 100 and that threads into the distal end of body 104. The proximal end and the intermediate portion of the inner body 114 define a first channel 138 that is sized and configured to align with the outlet 113 of the neck 111. The distal portion of the inner body 114 defines a relatively narrower second channel 142 axially aligned with the first channel 138. A set of discharge openings 140, in communication with the second channel 142, is defined in a side wall of the distal portion of the interior body 114 to allow product to exit therethrough. In a preferred embodiment, the cross-sectional area of ​​the openings 140 is at least about 60% of the total cross-sectional area of ​​the side wall; although discharge openings 140 of various sizes, both larger and smaller, may be selected to achieve the desired performance as will be appreciated by those skilled in the art upon review of the disclosed object.

In the operation of container 100, container 100 is activated to discharge product through nozzle 102 by squeezing body 104 by hand. As a consequence, pressure flows through body 104, first channel 138, second channel 142, and discharge openings 140. The pressure facilitates the flow of product from body 104 through joint 125. As a consequence, pressurized product flows through discharge opening 140 into joint 125, and exits through the tip of discharge nozzle 102. As noted above, the opening pressure of the valve is low enough that manual compression of the body creates enough pressure to cause the pressurized product within the package to open the joint 125 and exit therethrough.

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Once the product is discharged and the pressure on the body 104 is removed, the joint 125 returns to its normally closed position to substantially prevent any product that is exposed to air from flowing back into the container 100 and in addition to that seals the container. The container 100 is then ready to be activated again to discharge another quantity of product. An advantage of this type of container 100 is that once a dose of product has been discharged, the joint 125 of the nozzle 102 closes and thus substantially prevents product that has been exposed to air or foreign particles from passing back into through nozzle 102 and into container 100, which can, in some cases, contaminate the remainder of the product in container 100. This advantage is especially important when storing multi-dose quantities of sterile and / or preservative-free formulations of drugs, perishable foods, cosmetics, and the like.

Referring now to the embodiment of Figure 4B, an O-ring 119 is included to prevent product from being inadvertently discharged between body 104 and inner body 114. Preferably, the O-ring 119 is seated between the container body 104 and the inner body 114 to form an airtight seal between them. As can be seen, in this embodiment the nozzle 102 differs from the nozzle described above in that the inner body 114 of the valve assembly includes a first substantially frusto-conical or tapered portion 127 extending between the base of the body and the seat 124 of The valve. Furthermore, the numerous flow openings 140 (only one is shown) extend through the tapered portion 127. As can be seen, each flow opening 140 is formed contiguous with the axially elongated valve seat 124. The valve cover 112 includes a cover base 129 mounted on the body base and fixedly secured against axial movement relative to it by the body base annular flange 126 which is received in the corresponding base recess. Of the cover. A portion 131 of the valve cover covers the valve seat 124. As can be seen, the valve portion 131 defines a predetermined radial thickness and a diameter less than a valve seat diameter to thereby form a press fit between the two. Valve portion 131 and valve seat 124 between them define valve opening 125 which normally extends axially, annularly, and closed. The valve portion 131 is radially movable between the normally closed position engaging the valve portion and the valve seat, as shown in Figure 4B, and an open position with a segment of the valve portion radially spaced from the valve portion. valve seat to allow the passage of the substance at a predetermined valve opening pressure between the two. Valve cover 112 further defines a second substantially frusto-conically shaped portion 133 extending between

ES 2 355 487 T3 the base of the cover and the valve part 131 which covers the first substantially frusto-conically shaped part 127 of the body and forms a press fit between the two.

As indicated by the dashed arrow 135 in FIG. 4B, the dispensed product defines an unobstructed flow path extending axially between the interior of the body 104 and the flow openings 140. By forming outlet openings in the substantially frusto-conical or tapered portion 127, and by forming the inner radial side of each opening either contiguously or substantially contiguously with the axially extending annular valve seat 124 as shown, the loss of observed load on dispensing the product from the interior of the container through the flow openings 140 is substantially minimized, thus facilitating a relatively low valve opening pressure. As a consequence, the package and valve assembly allows the product to be easily and comfortably dispensed through the nozzle by manually pressing the tube, even the valve device maintains an airtight seal that substantially prevents the entry of bacteria or other unwanted impurities through valve and into the container. As described below, the valve part 131 and the frusto-conically shaped part 133 of the valve cover define a tapered profile in cross section such that the radial thickness of the cover in these sections progressively decreases in the direction of the valve cover. inside to outside of the valve device. As described below, an advantage of this configuration is that once the product enters the inner end of the valve closure or opening 124, the energy required to successfully open the remainder of the axial segments of the parts 133 and 131 taper and valve progressively decreases, thereby causing substantially all of the substance entering the valve opening to be dispensed through the valve opening, and thus avoid residual infiltration of said substance. As also described below, and in accordance with preferred embodiments of the present invention, at substantially any time during product dispensing through valve opening 125, a respective annular segment of valve portion 131 engages valve seat 124 to prevent fluid communication between the exterior and interior of the valve. As a consequence, the valve device preferably keeps the interior of the package hermetically sealed, even during dispensing, thus allowing the package to contain multiple doses of products that must be kept in a sterile and / or airless atmosphere, such as "preservative free" formulations. As described below, the axial extension of the valve seat 124 (ie, the sealing surface of the valve seat) is made long enough to ensure that this goal can be achieved.

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Turning to Figures 5-8, another embodiment of the container of the present invention is indicated generally by reference numeral 200. Container 200 is substantially the same as container 100 described above, and therefore similar reference numerals beginning with the number "2" instead of the number "1" are used to indicate similar items whenever possible. The main difference of container 200 compared to container 100 is that inner portion 202 is integral with body 104 thereby eliminating the need for a separate neck and inner portion.

To make container 200, plastic granules are melted as they pass through an extruder. The extruder can thus produce a single layer or a multi-layer continuous sleeve. The sleeve is cut to the desired length to form the body 204. The headless body 204 is loaded onto a mandrel where the inner body 214 is injected. compression molded or welded thereto, as is known to those skilled in the applicable art. At this time, additional screen printing or stamping can be applied to the outer surface of the body. The body 204 is then filled with the selected product and the outer body 212 is coupled to the inner body 214 to seal the container 200.

To fill container 200, a filling machine can be used in a sterile environment. A variety of filling machines are available such as the liquid filler available from Pack West at 4505 Little John St., Baldwin Park, CA 91706. The product can be injected into body 204 before or after nozzle 202 is in position. After sealing with the outer body 212, the cap 206 is then applied. Preferably, lid 206 prevents unwanted discharge of product during handling.

In an alternative filling procedure, a sterile environment is not needed even though the product needs to be kept in a sterile environment. Filling may include the injection of a sterilizing agent such as liquid hydrogen peroxide at a pressure above atmospheric into containers made of polyethylene terephthalate or other material suitable for sterilization. To remove the sterilizing agent, a stream of hot sterile air can accelerate its evaporation. The sterile product can then be filled into the container and the hot air displaced until a portion of the sterile fluid can be suctioned off to ensure that the entire content is sterile. At that time, the appropriate closure in the form of a sterile nozzle can be applied. For other examples of acceptable filling procedures and apparatus, the container can be filled in accordance with the teachings of US Pat. 6, 351,924, no. 6, 372,276 and / or or. 6, 355,216.

In another embodiment, shown in Figure 8B, a container has a flexible shoulder 290 that seals the interior of the tubular body 204 from ambient atmosphere. As can be seen, the distal end of body 204 is radially outwardly spaced from the base of the

ES 2 355 487 T3 inner body 214 to define a normally closed filling opening 291 between the two. The flexible rim 290 defines an annular sealing member 293 that extends axially inwardly into the space formed between the base of the inner body 214 and the tubular body 204. Preferably. The flexible flange 290 is formed of an elastomeric material that normally engages the contiguous base of the inner body 214 and forms a watertight seal between the two. During filling, a filling member (not shown) moves either adjacent to or within opening 291, and product is pumped through, as indicated by arrow a. As a consequence, either the filling member (not shown) or the flow of product in the direction of arrow a causes the sealing member 293 to flex radially away from the base 214 of the inner body and opens the flow opening 291 to allow that the product flows through and into the interior of the container. After filling, the sealing member 293 returns to the normally closed position to hermetically seal the flow opening 291 and thus seal the product within the package. As can be seen, because the inner or distal end of the sealing member 293 is directed radially inward with respect to its base, the sealing member will not open in response to the pressure created upon dispensing of the product through the mouthpiece, but rather will maintain the airtight seal throughout the shelf life of storage and use of the container. As indicated in dotted figure 8B, a cap or other closure 295 may be secured to the flange 290 after filling to prevent any unwanted substance from being inadvertently or otherwise introduced through the flow opening 291 and into the flow. inside the container. The closure 295 may adopt one of many different configurations that are currently known or will be known in the future to perform this function, and the closure will preferably be tamper-proof such that if someone manipulates the sealed closure the tampering will be evident and the container can be discarded. As those skilled in the applicable art may recognize based on the teachings herein, there are a variety of useful filling apparatuses and procedures that are presently and may be known below to those skilled in the applicable art, and such apparatus and Procedures can also be used to fill the different packages of the present invention.

Turning to Figures 9-12, another embodiment of the container of the present invention is indicated generally by reference numeral 300. Package 300 is similar to packages 100 and 200 described above, and therefore similar reference numerals preceded by the number "3" are used instead of the numbers 1 and 2 to indicate similar items whenever possible. The main difference of the container 300 compared to the containers 100, 200 is that the nozzle 302 is of a different configuration.

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As was the case with the nozzles described above, the nozzle 302 can be made of any somewhat flexible material of adequate duration and moldable, such as a plastic material and, preferably, a composite of a material that has been considered compatible with the particular product contained in it, such as materials sold under the VELEX (R) and LEXAN (R) trademarks, both owned by the General Electric Company of Fairfield, Connecticut, or under the KRATON (R) trademark owned by Kraton Polymers US LLC. The inner body 314 of the nozzle 302 is preferably molded in one piece and comprises a body part 313 of a frusto-conical, conical or tapered shape (Figure 12) that terminates in a pillar or valve seat 317 on one end and a flange. or cylindrical wall 336 at the other end. Preferably, the body portion 313 is oriented at an angle of approximately 45 degrees or less relative to the axis of the container 300 to minimize head loss of the product when dispensed. In a preferred embodiment, the angle of the body portion 313 is approximately 30 degrees. Flange 336 defines an axial flow path 348 that is larger in diameter than that of post 317. In another embodiment (not shown), the diameter of the pillar 317 is greater than that of the axial flow path 348 to increase the size of the flow opening and thus reduce the required valve opening pressure. As those skilled in the applicable art may recognize based on the teachings herein, the diameter (or radial or lateral dimension) of the valve seat of the nozzle disclosed herein may be adjusted, along with one or more degrees. interaction between the valve cover and the valve seat, the radial thickness of the valve part of the valve cover, and the modulus of elasticity of the valve cover material, to achieve a desired valve opening pressure. As described hereinafter, one or more of these variables may also be selected to ensure that the valve device hermetically seals the interior of the container and prevents the entry of bacteria or other unwanted substances through the valve and into the container. tube.

Referring to Figures 12A-C, preferably, and as noted above, the axial extension of the valve seat or pillar 317 (i.e., the sealing surface between the valve seat and the valve cover) is long enough so that at any time during dispensing, A respective part of the valve cover engages the valve seat to prevent fluid communication between the product contained in the container and the ambient atmosphere. The pillar 317 has three regions labeled 1, 2, and 3. The first region 1 is the area where the valve cover 312 blocks the flow port 340. The third region 3 is the area from which the substance of the container 300 comes out. The second region 2 is the intermediate area between the first region 1 and the third region 3. Each region 1, 2, 3 has an associated pressure P1, P2 and P3, respectively. At rest, every pressure

ES 2 355 487 T3

P1, P2, P3 equals zero. As container 300 is compressed and, as shown in FIG. 12B, pressure builds in the first region 1 until a portion of the valve cover 312 leaves the pillar 317. Substance flows into the second region 2 creating increasing pressure in the second region 2 and in the third region 3 where P1> P2> P3. As shown in Figure 12C, the substance moves into the third region 3, but before exiting the container 300, the valve cover 312 is re-seated on the pillar 317 in the first region 1 to retain the hermetic seal. and avoid any possibility of contamination entering the container 300. When the substance is discharged the relative pressure relationship is as follows P1 <P2> P3> 0.

As in the case of the other embodiments of the valve device disclosed herein, the valve cover 312 preferably defines a thickness in cross-section (or radial) that is progressively reduced by moving axially in the direction from inside to outside until the exterior of the valve device. In this manner, as typically shown in Figures 12A-12C, the valve cover defines a tapered cross-sectional profile that tapers internally as it is axially displaced from the inside to the outside of the valve. Furthermore, as described in more detail below, the interface between the valve cover and the valve seat can define a decreasing level of radial interaction when moving axially in the direction from the inside to the outside of the valve device, i.e. the valve cover can define a greater degree of radial interaction with the valve seat in region 1 than in region 2, and can define a greater degree of radial interaction in region 2 than in region 3 at the tip of the nozzle. Consequently, the energy required to open the respective segments of the valve cover progressively decreases when it is moved axially in the direction from the inside to the outside of the valve. As a consequence, once the valve base region 1 is open and the substance enters the normally closed joint or valve opening, the resilient nature of the valve cover, and the construction of the valve device, as stated described above, causes the valve cover to progressively return by itself to the normally closed position and subsequently forces the dosage of substance axially through the joint. In addition, the valve cover forces the substance out of the joint through the tip of the nozzle and thus prevents the substance from being collected within the valve and creating residual seepage later in time.

As well shown in FIG. 12, a flange 326 is disposed coaxially with and extends radially from the conical portion 313 itself. In a preferred embodiment, the conical portion 313 is frusto-conical in shape. Tab 326 help

ES 2 355 487 T3 retains the outer body 312 and creates a limited surface overlying the flow opening 340 to, in turn, reduce and otherwise prevent residual infiltration of material. An annular recess 319 is formed between frusto-conical portion 313 and flange 326. It will be recognized that frusto-conical portion 313 and flange 326 can be molded together or separately. Similarly, inner body 314 and tube 304 may be integral or separate components. The frusto-conical portion 313 comprises a central bore 342 in communication with the interior of the tube 304 via the axial flow path 348. Center bore 342 terminates in various discharge openings 340 through which product can flow axially. Container 300 includes three discharge openings 340 spaced approximately equally with respect to each other about the axis of nozzle 302 such that, in cross-section, the area defined by discharge openings 340 is larger than the portions that they remain compact. However, as those skilled in the applicable art may recognize based on the teachings herein, the nozzle 302 may include any desired number of said discharge openings in any desired configuration depending on the application of the dispenser or otherwise as required. needs. In a preferred embodiment, the configuration of the discharge openings is at least about 50% of the annular area, and most preferably between about 70% and about 90%.

The outer body cover 312 can be composed of any durable, resilient and flexible material that has the desired modulus of elasticity, such as an elastomeric material. Preferably, the outer body cover 312 is comprised of a thermoelastic material, such as a styrene-butadiene elastomer sold under the trademark KRATON®. Other suitable materials include without limitation polyvinylchloride, APEX FLEXALLOY® material available from Teknor Apex Company, SAN-TOPRENE® rubber available from Advanced elastomer Systems, and synthetic butyl rubber. In a preferred embodiment, the inner body 314 is made of KRATON® material that has a modulus of elasticity of approximately 4.1 MPa and the outer cover 312 is made of SANTOPRENE® material that has a modulus of elasticity of approximately 2.6 MPa. at about 4.1 MPa. The outer body cover 312 comprises a saddle portion 321 and a tapered portion 323 that cooperate with the inner body 314 to establish a one-way seal valve. Mount portion 321 defines an annular recess that engages conically shaped portion 313 and flange 326 to couple outer body cover 312 thereto. Due to the resilient nature of the outer body cover 312 material, the inner body 314 may be slightly oversized in order to facilitate a snap fit. In one embodiment, the outer body cover 312 is molded to the same dimension as the

ES 2 355 487 T3 inner body 314 and post-mold shrinkage of outer body cover 312 produces the desired press fit

The outer body or valve cover 312, once assembled, is sized and configured to resiliently engage the inner body 314 whereby the tapered portion 323 and the valve post or seat 317 form a normally closed one-way valve between they. As described above and typically shown in FIG. 12, the cross-sectional thickness of the tapered portion 323 gradually decreases toward the distal end of the nozzle tip. As a consequence, the pressure required to open the valve seat gradually decreases to facilitate discharge of the product through the one-way valve, while preventing air or other gases from passing through the one-way valve at the same time. Wrong Way. Preferably, a substantially annular segment of the outer body cover 312 engages the post 317 during any dispensing period to maintain an airtight seal between the interior and the ambient atmosphere as shown in Figures 12A-C. If desired, and as also described above, the degree of interaction between the tapered portion 323 of the valve cover and the valve seat 217 can progressively decrease in a direction from the inside to the outside of the nozzle 302 by varying the diameter. interior of the inner body cover 312 and / or the size of the inner body 314. Preferably, a cap (not shown) engages the threads 316 of the inner body 314 to seal the nozzle 302 and prevent unwanted discharge of product.

Referring now to Figures 13-15, the nozzle 402 is similar to the nozzles described above and therefore similar reference numerals preceded by the number 4 instead of the numbers 1, 2 and 3 are used to indicate similar items whenever possible. An advantage of the configuration illustrated in embodiments 300 and 400 is that the product follows a substantially straight flow path that extends in a direction parallel to the axis of the container 300, 400. This relatively straight and homogeneous flow path allows product to flow through nozzles 302, 402 with relatively small pressure drop, thus allowing less force to dispense product and avoiding gaps in which it can be unwantedly accumulated.

In addition, it may be desirable to make the outside diameter of valve seat 317 as large as possible in order to reduce the required valve opening pressure that must be generated upon compression of tube 404 in order to open the valve and dispense product. through the valve. The present inventor has recognized that various factors can affect the opening pressure of the valve, including the diameter of the valve seat 417, the modulus of elasticity of the valve cover 412, the degree of interaction between the valve cover 412 and valve seat 417, and the thickness and shape of seat 417

ES 2 355 487 T3 of the valve. All other factors being equal, the volumetric flow rate of material through the valve will be greater with increasing valve seat diameters 417 and the required valve opening pressure will decrease. The present inventor has recognized that it may be desirable (1) to increase the diameter of the valve seat 417 as compared to prior art valves in order to reduce the necessary valve opening pressure that must be created after compression of the tube; (2) reduce the head loss of the product flowing through the valve compared to prior art valves; and (3) reducing the elastic energy stored in the valve after dispensing the product through the valve to, in turn, reduce residual infiltration of product through the valve. A significant advantage of the valves illustrated in Figures 9-15 and in the additional embodiments described herein is that the flow openings 440 define flow paths substantially parallel to the axes of the containers to, in turn, minimize leakage. load of products flowing through the valves.

As a consequence, one skilled in the art will appreciate based on the review of the subject disclosure that at least one of the following parameters is the diameter of the valve seat, a degree of interaction between the valve cover 312 and the valve seat 317 valve, the predetermined radial thickness of the valve cover 317 portion 317, and a predetermined modulus of elasticity of the valve cover 312 material, can be selected to (1) define a predetermined valve opening pressure generated upon compression of tube 304 manually that allows the substance to pass from the storage chamber through valve opening 340, and (2) hermetically seal valve 302 and prevent the entry of bacteria or other unwanted substances or impurities through the valve and into tube 304 in the normally closed position.

In another embodiment shown in FIG. 15A, valve seat 417 extends through nozzle 402 into the tube. Valve body 414 defines a plurality of flow openings 440 that extend angularly around valve seat 424, and are angularly spaced from one another with corresponding solid portions formed between them. In a presently preferred embodiment of the present invention, the valve body defines three angularly extending flow openings 440. As indicated above, the flow openings 440 preferably extend through about 60% of the ring they are on, and more preferably they extend through between about 70% and about 90% of the ring they are on. is it so. Also typically shown in FIG. 15A, the degree of interaction between valve cover 412 and valve seat 424 is visually illustrated by the overlap in the scratch lines. As can be seen, there is a significant degree of interaction between the

ES 2 355 487 T3 valve cover and valve seat in order to ensure the formation of the desired tight seal in the normally closed position. In the embodiment of FIG. 15A, valve seat 424 defines a tapered distal portion, and valve cover portion 423 defines a tapered cross-sectional profile as described above. As those skilled in the applicable art may recognize based on the teachings herein, the valve seat can adopt any of a number of different configurations, including a consistent straight or diameter profile from end to end, or a tapered or tapered configuration. another variable, in order to achieve certain performance criteria or other desired objectives.

Depending on the viscosity of the product, the configuration of the nozzle 402 can be varied to achieve a desired valve opening pressure and to ensure consistent formation of a tight seal in the normally closed position. For example, the outer cover 412 may have varying levels of interaction and modulus of elasticity that contribute to the valve opening pressure, that is, the stress required in the circumferential direction to open the valve. Referring to Figure 15B, which schematically illustrates an axial segment of the valve cover 412, the formula for determining the valve opening pressure is as follows:

Aa = g_- 2ab²

E a²-b²

Ab = qb a² + b² + v E a² - b² max c¡2 ~ QÍa * + you) when r = b (a²-b²) σ;

Solution for values ​​of qq = Ab E ba² + b² + v „2 a - b

Insertion of q in previous values ​​naxa2 = Ab E ía² + b²) ba² + b² + v (a² - b²) to²-b²

ES 2 355 487 T3 in which q = unit pressure (force per unit area); a = outer radius; b = inner radius; σ2 stress in circumferential direction; E = modulus of elasticity: v = Poisson's index 5 (approximately 0.4); Aa = increase in radius a; and Ab = increase in radius b,

By applying these formulas to the five locations A, B, C, D, E in Figure 15A, the different parameters can be calculated. Based on these formulas, Table 1 presents exemplary data from the embodiment of Figure 15A at the five locations AE illustrated in Figure 15A.

Table 1 (Groove Section)

<td></td><td>E =</td>

<td>Poisson index</td><td>(v) =</td>

<td>Exterior</td><td>Radius a =</td>

<td>Inside</td><td>Radius b =</td>

<td></td><td>Delta a =</td>

<td></td><td>Delta b =</td>

<td>Internal pressure</td><td>q =</td>

<td>Tension</td><td>σ =</td>

4.137931034 Mpa

0,4

1.62 mm

1.28 mm

0.084596753 mm

0.095 mm

0.065020291 MPa (9.430395913 psi²)

0.281103953 MPa (40.77068141 psi)

Table 1 (continued)

<td>B</td><td colspan="2">(Groove section)</td>

<td></td><td>E =</td><td>4.137931034 Mpa</td>

<td>Poisson index</td><td>(v) =</td><td> 0,4</td>

<td>Exterior</td><td>Radius a =</td><td>2.08 mm</td>

<td>Inside</td><td>Radius b =</td><td>1.39 mm</td>

<td></td><td>Delta a =</td><td>0.184300368 mm</td>

<td></td><td>Delta b =</td><td>0.23 mm</td>

ES 2 355 487 T3

Internal pressure q = 0.227177379 MPa (32.9704338 pounds / inch²)

Stress σ = 0.593822673 MPa (86.18616442 pounds / in2)

<td>C</td><td></td><td>(Groove section)</td>

<td></td><td>E =</td><td>4.137931034 Mpa</td>

<td colspan="2">Poisson's index (v) =</td><td> 0,4</td>

<td>Exterior</td><td>Radius a =</td><td>2,295 mm</td>

<td>Inside</td><td>Radius b =</td><td>1.4 mm</td>

<td></td><td>Delta a =</td><td>0.165350559 mm</td>

<td></td><td>Delta b =</td><td>0.22 mm</td>

<td>Internal pressure</td><td>q =</td><td>0.251511379 MPa (36.50382854 psi)</td>

<td>Tension</td><td>σ =</td><td>0.549641754 MPa (79.77383974 psi)</td>

<td>D</td><td></td><td>(Groove section)</td>

<td></td><td>E =</td><td>4.137931034 Moa</td>

<td colspan="2">Poisson's index (v) =</td><td> 0,4</td>

<td>Exterior</td><td>Radius a =</td><td>4.75 mm</td>

<td>Inside</td><td>Radius b =</td><td>2.3 mm</td>

<td></td><td>Delta a =</td><td>0.197999223 mm</td>

<td></td><td>Delta b =</td><td>0.315 mm</td>

<td>Pressure</td><td>internal q =</td><td>0.281593521 MPa (40.86988699 psi)</td>

<td>Tension</td><td>σ =</td><td>0.454079233 MPa (65.9040977 psi)</td>

<td>AND</td><td></td><td>(Groove section)</td>

<td></td><td>E =</td><td>4.137931034 Mpa</td>

<td colspan="2">Poisson's index (v) =</td><td> 0,4</td>

<td>Exterior</td><td>Radius a =</td><td>4.75 mm</td>

<td>Inside</td><td>Radius b =</td><td>4.25 mm</td>

<td></td><td>Delta a =</td><td>0.237919859 mm</td>

<td></td><td>Delta b =</td><td>0.25mm</td>

<td>Internal pressure</td><td>q =</td><td>0.025818142 MPa (3.747190459 psi^:</td>

<td>Tension</td><td>σ =</td><td>0.233080451 MPa (33.82880276 psi^:</td>

In Figures 15C and 15D, tube 404 defines a maximum diameter D1, valve seat 424 defines a constant diameter D2, and the axial length of the valve seat (or valve seat sealing surface) is defined as L "and extends between point 5 A" at the tip of the nozzle, and point B adjacent the radially inner edges of flow opening 440. Valve portion 423 defines an inner annular surface 427 which

ES 2 355 487 T3 extends axially in engagement with the valve seat 424 and cooperates with the valve seat to define the length L of the sealing surface. The distended or unstretched diameter of the annular surface 427 of the valve portion is defined as D3. As described above, the inside diameter D3 of the annular surface 427 is smaller than the outside diameter D2 of the valve seat 424 in order to form a press fit and thus seal tightly between them. In Figure 15D, the schematic shows lines of the valve cover in both a stretched and unstretched state to visually illustrate the interaction between the valve cover and the inner body. In the illustrated embodiment, the degree of interaction between the valve seat and the valve cover is substantially constant along the length L "of the sealing surface. However, as indicated above, the degree of interaction can be varied, if desired. Exemplary values ​​of the parameters of the presently preferred embodiments of the present invention are illustrated in the Table 11 below. The interaction between the outside diameter D2 of the valve seat and the inside diameter D3 of the valve cover is labeled "I" and is determined based on the differences between the two diameters divided by two. The thickness of the valve cover at point A is labeled T1 (A) and the thickness of the valve cover at point B is labeled T2 (B) ”.

Table II

<td>D1</td><td>D2</td><td>D3</td><td>I</td><td>L</td><td>T1 (A)</td><td>T2 (B)</td>

<td>1 inch</td><td>7.6 m</td><td>6.8 mm</td><td>0.4 mm</td><td>3.28 mm</td><td>0.71 mm</td><td>1.25mm</td>

<td>0.5 inch</td><td>5.0 mm</td><td>4.6 mm</td><td>0.2 mm</td><td>3.9 mm</td><td>0.5mm</td><td>0.8 mm</td>

In one embodiment of the present invention. in which the diameter D2 of the valve seat is 5 mm, the opening pressure of the valve corresponds to a force that is directed radially substantially on a central part of the tubular body within the range of between about 2.4 kg and approximately 2.9 kg. In another embodiment of the present invention, in which the diameter of the valve seat is 10 mm, the opening pressure of the valve corresponds to a force of approximately 5.4 kg that is directed substantially radially on a central part of the valve. tubular body. Preferably, the opening pressure of the valve corresponds to a substantially radially directed force applied to a central part of the tubular body within a range of between approximately

ES 2 355 487 T3 is approximately 1 kg and about 6 kg, and more preferably within the range of between about 2 kg and about 4 kg, and most preferably within a range of about 2.4 kg to about 2.9 kg. The length L of the valve seat (or its sealing surface) is preferably at least about 30% of the diameter D2 of the valve seat and preferably is within the range of between about 40% and about 85% of the diameter. D2 of the valve seat. For smaller diameter tubes, the valve seat may necessarily define a smaller diameter D2 and therefore the ratio of the length L of the valve seat to the diameter D2 will typically be greater the smaller the tube. Therefore. For about 1-inch diameter pipes as described above, the length L of the valve seat preferably is within the range of between about 25% and about 75% of the diameter D2 of the valve seat, and most preferably it is within the range of about 35% to about 65% of the valve seat diameter D2. For about 0.5 inch diameter tubes, such as those described above, on the other hand, the length L of the valve seat is preferably at least about 60% of the diameter D2, more preferably at least about 75% of the diameter D2 , and most preferably it is greater than 75% of the diameter D2.

It is envisioned that the packages disclosed herein may receive liquids, suspensions, gels, creams, pasty products, fluids, and the like that are typically at risk of developing germs or have required preservatives in the past. For example, the package can store vacuum packaging, UHT milk that alleviates the need for refrigeration, baby formulas, toothpaste, premeasured baby food dosages in accordance with the principles disclosed in the US patent application. no. 10 / 272,577 filed on October 16, 2003 (incorporated herein by reference in its entirety), as well as carbonated beverage petrogels and, in addition, yogurt, honey, ketchup, mustard, mayonnaise, and tartar sauce in single or multiple servings.

In Figures 16 and 17, another embodiment of the container of the present invention is indicated generally by reference numeral 500. The container 500 is substantially the same as the containers previously described in connection with Figures 1-14 and therefore similar reference numerals preceded by the number 5 instead of the numbers 1 to 4 are used to always indicate similar items. as possible. As can be seen, container 500 includes a dispensing tip 511 formed to comfortably contact the lips of a user defining, for example, a substantially concave surface contour. Those skilled in the applicable art will appreciate that a different contour can be used to conformably and / or comfortably contact the skin or lips of a user. The body 514 inter

The nozzle 502 is preferably molded in one piece and terminates in a valve post or seat 517 at one end and a flange 536 at the other end. Flange 536 has a projection 538 for sealingly engaging a projection 505 of flexible tube 504 to, in turn, secure nozzle 502 to tube 504. Preferably, the inner body is made of KRATON (R), a material having a hardness of approximately 65 shore A, and the valve cover 512 is made of KRATON (R), a material having a hardness of approximately 20 shore. A. However, as those skilled in the applicable art may recognize, these hardnesses are exemplary only, and may be changed at will to meet certain performance or other criteria, at will.

In Figure 18, another embodiment of the container of the present invention is indicated generally by reference numeral 600. Container 600 is substantially the same as container 500 and therefore similar reference numerals preceded by the number 6 are used instead. from the numbers 1 to 5, to indicate similar elements. As can be seen, container 600 includes a tip region 611 having a substantially frusto-conical surface contour to conformably or substantially conformably contact the facial or other skin area of ​​a user or otherwise to effectively and comfortably apply a product. downloaded to a desired area. As those skilled in the applicable art may recognize based on the teachings herein, the tip of the nozzle may take any of a number of different shapes and / or configurations that are presently or will be later known to perform the functions of the tip of the nozzle, such as conformable contact or other contact with a particular surface area of.

In Figure 19, another embodiment of the container of the present invention is indicated generally by reference numeral 700. The nozzle 702 of the container 700 is substantially the same as the previous nozzles and, therefore, reference numerals preceded by the number 7 instead of the numbers 1 to 6, to indicate similar elements whenever possible. For simplicity, the following description is directed to the differences in the body 704 of the container 700. Body 704 has a resilient outer wall 760 and a base 762 sealedly connected to the lower end of outer wall 760. The outer wall 12 has a cross section to accommodate a user's hand and is made of resilient plastic such as low density polyethylene so that the outer wall 12 can be heat sealed to the other components of the container 700. As will be appreciated by those skilled in the applicable art, molding, extrusion, and the like methods of manufacturing the components of container 700 are interchangeable and adhesives, heat sealing can be used. snap fittings, the like, and combinations thereof for assembling container 700.

ES 2 355 487 T3

Base 762 is sealed to the lower end of exterior wall 760. Preferably, base 762 is dimensioned and configured such that container 700 can rest vertically on it. An air control valve 770 regulates the flow of air to and from the space 772 located between the interior of the exterior wall 760 and the exterior of the interior bag 764. A base vent 774 admits ambient air into space 772 via control valve 770 after a dispensing cycle to allow outer wall 760 to return to an oval cross-sectional shape. When container 700 is squeezed, the escape of air from vent 774 must be slow enough that pressure builds within space 772 and dispensing occurs before any appreciable amount of air is lost. Rather, upon relaxation of the tight, sufficient air must enter the space 772 through the vent 774 to quickly return the outer wall 760 to undeformed shape. A ring 776 surrounds the control valve 770 to prevent an inner bag 764 from interfering with the operation of the control valve 770.

The flexible inner bag 764 contains the product and is secured to the outer wall 760 at a top edge 766. In addition, the inner bag 764 is secured to the interior of the outer wall 760 at a point 768 approximately midway between the ends of the outer wall 760 to substantially secure the vacuum of the inner bag 764 without applying extraordinary force to the outer wall 760. Preferably, the inner bag 764 is made of a material with a low flexural modulus to prevent significant addition to the force necessary to dispense the product contained therein 765.

The nozzle 702 selectively and hermetically seals the interior of the interior bag 762 from atmospheric air. By preventing the entry of air into the interior 765 of the interior bag 764, the nozzle 702 not only maintains the sterility of the interior 765 but assists in the initiation of the next dispensing cycle without appreciable discharge or excessive tightening of the exterior wall 760. During the dispensing cycle, the outer wall 760 is squeezed and deformed to increase the pressure within the space 772 and thus increases the pressure within the interior 765 of the inner bag 764. Although an amount of air escapes through the vent port 774, the pressure overcomes the latch of the valve cover 712 and the product flows out of the flow port 740 as described above. After removal of the clamping force, the dispensing of the product is stopped. The outer wall 769 begins to return to the undeformed shape which creates a vacuum within the space 772. The vacuum forces the control valve 770 to open allowing air to enter through the vent hole 774 to, in turn, causing the inner bag to move toward the nozzle 702 and allowing the outer wall 760 to return to form. Consequently, during the next press

From the outer wall 760, the nozzle 702 reopens rapidly to allow the product to be discharged again in a hermetic manner. After multiple doses, the inner bag 764 is folded around the midpoint until substantially all of the product is dispensed from the interior 765.

In another embodiment, the outer wall 760 is made of a relatively rigid material to, in turn, increase the pressure necessary to deform the outer wall 760 and / or facilitate pressure generation. As a consequence, nozzle 702 can be configured for increased opening pressure. Those skilled in the art will appreciate upon review of the object disclosure that the concepts of container 700 can be readily adapted to any of several container configurations such as, without limitation, a flexible tube such as that shown above and the control valve can be located in any of several suitable locations.

In Figures 20A-22B, three other packages embodying the present invention are generally indicated by reference numerals 800, 900, and 1000, respectively. The nozzles on these packages are substantially the same as previous nozzles and therefore similar reference numerals preceded by a different number instead of the numerals "1" to "7" are used to indicate similar items whenever possible. For simplicity, the following description is directed to the differences in packaging. Moving to the container 800 shown in Figures 20A-20D, the outer cover 860 is formed in a decorative way and receives a cartridge 864. Preferably, the cartridge 864 selectively engages the outer cover 860 by a snap-fit ​​mechanism 867 and has the inner body 814 integrally formed therewith. A new valve cover 812 can be used each time a cartridge is replaced or the same valve cover 812 can be reused. In another embodiment, the outer cover 860 is made of a rigid or semi-rigid material such as colored plastic or glass to contribute to the aesthetics of the container 800. In another embodiment, the entire cover 812 is rigid and a pump is included to dispense the product as shown in US Patent Application No. 10 / 001,745 filed Oct 23, 2001. A handle 803 allows for easy portability and use of container 800.

By varying the nozzle setting, the valve opening pressure can be optimized to discharge even highly viscous products such as honey, syrups, lubricating fats, petrogels, putty compounds, and other materials ranging from one centipoise to thousands of centipoise. viscosity while maintaining the integrity and sterility of the remaining product.

Although the invention has been described with respect to preferred embodiments, those skilled in the art will readily appreciate that various changes and / or modifications can be made.

The invention applies without departing from the scope of the invention defined by the appended claims.