Package with lid sealing system.

(54) Title: PACKAGE WITH LID SEALING SYSTEM.

(54) Title: PACKAGE WITH LID SEALING SYSTEM.

(57) Summary

One package Includes a container and a lid adapted to mate with a container flange. The lid closes an upper opening in the container when mounted on the container. In Illustrative embodiments, the cap comprises a membrane sheet and a sheet support ring permanently attached to the entire perimeter edge of the membrane sheet. The foil support ring is configured to temporarily engage the rim of the container in any manner suitable to retain the membrane foil in mating and coupled engagement with the rim of the container such that the opening in the product storage screed formed in the container closes while the lid remains in place on the container.

(57) Abstract

A package included a container and a lid adapted to mate wlth a brlm of the container. The lid closes a top openlng In the container when mounted on the container. In illustrative executions, the lid comprises a membrane sheet and a sheet-support ring coupled permanently to the entire perimeter edge of the membrane sheet. The sheet-support ring is configured to mate temporarily wlth the brlm of the container In any suitable way to retaln the membrane sheet In mating and seallng engagement wlth the container brlm so that the openlng Into the product-storage reglón formed In the container is closed while the lid remains in place on the container.

Institute

Mexican Property

Industrial

<img file="MX336356B_D0001.tif" />

___SE___ »Ο®β®Μ OKWWA

<img file="MX336356B_D0002.tif" />

PATENT TITLE NO. 336356

Headlines): BERRY PLASTICS CORPORATION

Home:

101 Oakley Street, PO Box 959, Evansville, Indiana, 47710, USA

Denomination: PACKAGE WITH LID SEALING SYSTEM.

Classification:

lnt.CI.8: B65D77 / 20

<img file="MX336356B_D0003.tif" />

/ lgencla: Twenty iftos funda industrial.

robbery

Law of the. And of the Federation (DOF) 27/06 /) who subscribes the presen: I title it ice with foundation in 'Industrial property (Official Journal of years lmpr &lt;rogables, keep v before the

ICITUD

Internal filing date of February 2012

PRIORITY

Date:

February SÜ11

<img file="MX336356B_D0004.tif" />

section V, 6 ° section W, and 59 φ It law to patent of reference »grants co&gt; · conformity with« I artil ilo 23 of ontada from the fec i of pres ntadón de la lerechos.

e patent

III and 7 ° bis 2 of the

994, 10/25/1996, 12/26/1997, 1V05 / 1999,: 6/01/2004, 06/16/2005, 2101/2008, 06/05/2009, 06/01/2010, 06/18 / 2010, 06/28/2010, 01/27/2012 and 04/09/2012); articles 1 », 3 · ilifl rtíiMi · W Ι ··· πΓ ~ I y ΙΙΐΗΜΜ ··· ΜΚ0 · ΙΜ · ΜΒ · Μ ·· 0 · * ΗΒΜΡ ^ · ΗΒΐ · Ι0ΜΜΜ · ΜΜΜΜβΜ ·· action V Jrudy on 01 / 07/2002, 07/15/2004, 07/28/2002 and 07/09/2007); items 1^or, 3·, 4’, 5^or fraction V subsection a), 16 fractions I and III and 30 of the Organic Statute of the Mexican Institute of Industrial Property (DOF 12/27/1999, amended on 10/10/2002, 07/29/2004, 08/04/2004 and 09/13/2007); 1, 3 and 5 subsection a) of the Agreement that delegates powers to the Deputy Directors General, Coordinator, Divisional Directors, Holders of the Regional Offices, Divisional Deputy Directors, Departmental Coordinators and other subordinates of the Mexican Institute of Industrial Property. (DOF 12/15/1999, amended on 02/04/2000, 07/29/2004, 04/08/2004 and 09/13/2007).

Issue Date: January 15, 2016

<img file="MX336356B_D0005.tif" />

<img file="MX336356B_D0006.tif" />

NAHANNY CANAL REYES | í]

Arenal No. 550. Floor 1,

Pueblo Santa María Tepepsn, k Delegation&gt; .och¡milco,

CP 16020, Mexico City

Tei. (55) 53 34 07 00 www impi.qcb.mx

MX / 2016/5498

Mxlú 26ls) 006839

33G3SS

PACKAGE WITH LID SEALING SYSTEM

BACKGROUND

<img file="MX336356B_D0007.tif" />

Institute

The present description relates to a ProMad paquMsS ^ QfSO and particularly to a package that includes an industrial container

<td colspan="2">5 system to seal a cover</td><td>for</td><td>the</td><td>container.</td><td>Plus</td>

<td>particularly the present</td><td colspan="2">description</td><td>I know</td><td>relates to</td><td>a</td>

<td>cover provided with</td><td>a</td><td colspan="2">material</td><td>sealant and</td><td>the</td>

composition of that sealing material.

SHORT DESCRIPTION

A package in accordance with the present disclosure includes a lid adapted to mate with a rim of a container to close an opening in an interior product storage region formed in the container.

In illustrative embodiments, the package is configured to store food in the product storage region formed in the container.

In illustrative embodiments, the cap comprises a membrane sheet and a sheet support ring permanently attached to the entire perimeter edge of the membrane sheet. The foil support ring is configured to temporarily engage with the rim of the container in any manner suitable to retain the membrane foil in mating and coupled engagement with the rim of the container such that the opening in the product storage region formed in the container it closes

<img file="MX336356B_D0008.tif" />

while the container lid.

In modalities it remains illustrative, its place on

Mexican Industrial Property membrane sheet closes a structured central opening in the sheet support ring to provide a cap. The membrane sheet is also directly coupled in sealed relation to the rim of the container to establish a fluid seal between the lid and the rim of the container without having to rely on a separate seal, placed between the lid and the rim of the container.

In illustrative embodiments, the membrane sheet is a multilayer film comprising an outer bed arranged to permanently engage with the sheet support ring, an inner bed arranged to temporarily engage the rim of the container and separate from the rim when the lid it is removed from the container, and a core interposed between and coupled to the outer and inner beds. The inner bed is made of a sealing material that engages with the rim of the container to establish a fluid seal therebetween.

The cover is reclosable in illustrative modalities.

The sealing layer included in the inner bed can be separated (such as by peeling) from the rim of the container to break the seal therebetween during lid removal. The sealing layer included in the bed

<img file="MX336356B_D0009.tif" />

multiple interior

<img file="MX336356B_D0010.tif" />

of the multilayer film can be attached ^ g ^^^ d® I® Pr © iaJ®ri «j £ i times with the rim of the container to restore ^^^^ 'the seal between them during cover re-closure .

In an illustrative embodiment, the core comprises a polypropylene layer and the outer bed comprises an aggressive (i.e. non-release) sealant layer that is arranged to permanently engage with the sheet support ring to attach the membrane sheet to the ring of foil support to form the lid. It is within the scope of the present disclosure to use any suitable means to bond the outer bed and core to each other and to retain the outer bed and core in coupled relationship to the sheet support ring. It is also within the scope of the present disclosure to use any suitable means to bond the release liner of the inner bed to the core.

Additional features of the present disclosure will become apparent to those skilled in the art in considering illustrative modalities that exemplify the best mode for carrying out the disclosure as it is currently perceived.

BRIEF DESCRIPTION OF THE DRAWINGS

The detailed description particularly relates to the accompanying figures in which:

I

Μ

Ρ.

<img file="MX336356B_D0011.tif" />

Hee _Η . Institute

Fig. 1 is a perspective view of a paqi &amp; fexfcano efe fa Property according to the present description and showing &lt;4^EUPackage includes a container and a lid mounted on the container and made of a multilayer membrane sheet and a surrounding sheet support ring as suggested in Figs. 5-7;

FIG. 2 is an enlarged perspective view of the container of FIG. 1 before the lid engages with a flange included in the container to close an opening in a product storage region formed in the container;

Fig. 3 is a sectional view taken along line 3-3 of Fig. one showing the coupled pairing of the lid on the rim of the container such that a perimeter portion of the multilayer membrane sheet is trapped between an inner perimeter surface of the sheet support ring and an outer perimeter surface of the rim of the container to retain the product stored in the product storage region of the container in a sealed chamber when the lid is mounted on the container;

FIG. 4 is an enlarged partial sectional view taken of a circled region of FIG. 3 showing the perimeter portion of the multilayer membrane sheet seated in an annular inner channel formed in a side wall of the ring termination of the support sheet and a perimeter edge formed in

I instituted an annular cap retention d &amp; duetrtai lug that is attached to the side wall of the sheet holder ring and arranged to extend inward in a bottom cut opening-out gap defined by the rim of the container to engage a downward facing surface of the rim of the container to retain the perimeter portion of the membrane sheet in a stationary position in sealing engagement with the rim of the container;

FIG. 5 is a schematic perspective assembly view of the cap of FIGS. 1-4 showing the annular sheet support ring below the round membrane sheet;

Fig, 6 is an enlarged sectional view taken along line 6-6 of Fig. 5 showing a diagrammatic cross-sectional view of the multilayer membrane sheet included in the lid and showing that the membrane sheet comprises, in series, from top to bottom, an outer bed comprising an aggressive sealant layer adhered to permanently adhere to the sheet support ring, a core comprising a layer of polypropylene, and an inner bed comprising a removable sealing layer adapted to temporarily engage with the rim of the container;

<img file="MX336356B_D0012.tif" />

<img file="MX336356B_D0013.tif" />

Institute

Fig. 7 is an enlarged sectional view ΐοιηβφίβχ ^ οηφ a Property along line 7-7 of Fig. 5 showing that u

<img file="MX336356B_D0014.tif" />

upper portion of the side wall and an upper portion of the annular cap retaining ear extending from the sheet support ring cooperate to define an inner perimeter surface that is arranged to mate with an outer bed ( for example, the aggressive sealant layer did not detach) from the multilayer membrane sheet (as suggested in Fis. 8 and 9) to permanently retain the membrane sheet in a position mounted on the sheet support ring;

Fig. 8 is an enlarged perspective view of a section of the lid of Figs. 1-5 taken from a first point of view;

Fig. 9 is a view similar to Fig. 8 after the lid is mounted over the rim of the container showing the coupled pairing of a perimeter portion of the inner bed of the multilayer membrane sheet and the outer perimeter surface the rim of the container;

Fig. 10 is an enlarged perspective view of a section of the lid of Figs. 1-5 taken from a second point of view;

Fig. 11 is a view similar to Fig.

after the cap is mounted on the flange of the

Μ

Ρ

Ί instituted

<td>container; and</td><td>Mexlccw item PropI gives · :.</td>

<td>Figs.</td><td>12-14 show a coA agreement package¹¹^^^®¹</td>

<td>another modality of</td><td>the present description in which the</td>

Membrane sheet is formed to include an upwardly opening concave central portion;

Fig. 12 is a perspective view of a package in accordance with the present description and showing that the package includes a container and a lid mounted on the container and made of a multilayer membrane sheet and a sheet support ring surrounding;

Fig. 13 is a sectional view taken along line 13-13 of Fig. 12 showing the coupled pairing of the lid over the rim of the container such that a perimeter portion of the multilayer membrane sheet is trapped between an inner perimeter surface of the sheet support ring and an outer perimeter rim surface of the container to retain the product stored in the product storage region of the container in a sealed chamber when the lid is mounted on the container; and

Fig. 14 is an enlarged partial sectional view taken from a circled region of Fig. 13 showing the perimeter portion of the multilayer membrane sheet seated in an annular inner channel formed in the sheet support side wall and arranged to end

Institute at a perimeter edge formed in a retaining lug 0Scan of the property of the ring IfKfelStrial annular cap that attaches to the sheet-supporting side wall and arranged to extend inward into a bottom cut space of outward opening defined by the rim of the container for engaging a downward facing surface of the rim of the container to retain the perimeter portion of the membrane sheet in a mating stationary position sealant with the rim of the container.

DETAILED DESCRIPTION

A package 10 in accordance with the present disclosure includes a container 12 and a lid 14 configured to engage the container 12 to close an opening 27 in an interior product storage region 2 6 formed in the container 12 as suggested in Figs. . 1-4. Lid 14 comprises a sheet support ring 30 configured to mate with a rim 24 of container 12 as suggested in Figs. 2-4 and a membrane sheet 32 ​​permanently attached to the sheet support ring 30 to move therewith each time the lid 14 is moved relative to the rim of the container 24.

In illustrative embodiments, the membrane foil provides a barrier cap structure and is attached to the surrounding foil support ring 30 to form cap 14. It is within the scope of this disclosure to use

Μ

Ρ

Institute in the ring | ^ |_How

ItT PTOpi &amp; CfcKl membrane | $_{usjr | a |} insert molding techniques for overmolding sheet support 30 onto multilayer sheet 32 ​​to form cap 14. In illustrative, membrane sheet 32 ​​is permanently attached to sheet support ring 30.

The sheet support ring 30 provides a cover-ring structure for the multilayer membrane sheet 32. In an illustrative embodiment, the sheet support ring 30 is configured to temporarily engage relative to pressure with a portion of the flange of the container 24 which overlaps an outwardly extending lower cut space formed in container 12 so that container lid 14 is removable and reclosable. ,

A multilayer membrane sheet 32 ​​comprises an outer bed 321 adapted to carry and display high-quality, high-resolution graphics 326 (as suggested in FIG. 1) and to engage with the sheet support ring 30 as suggested in Figs. 3 and 4. The membrane sheet 32 ​​also includes an inner bed 323 adapted to mate with the flange of the container 24 to establish a fluid seal therebetween each time the lid 14 is mounted on the container 12 as suggested in Figs. 1-4, 9 and 10. The multilayer membrane sheet 32 ​​also includes a core 322 interposed between and coupled to

<img file="MX336356B_D0015.tif" />

the outer and inner beds 321, Fig. 6.

323 as suggested $ * 113 Industrial property *

The inner bed 323 comprises a detachable sealing layer which in illustrative embodiments is configured to engage with the container flange 24 to establish a sealed connection between the lid 14 and the container 12 when the reclosable lid 14 engages with the flange of the container 24 so that the ingress of oxygen and other contaminants into the product storage region 26 formed in the container 12 is blocked while the lid 14 is coupled to the container 12. The lid 14 can be removed from the container 12 and repeatedly closed in one piece by a consumer to close the opening 27 in the interior product storage region 26 formed in the container 12 each time the lid 14 is attached to the container 12.

In a container filling process according to the present disclosure, a product 25 (for example food) is deposited in the inner product storage region 26 formed in the container 12. The lid 14 is then mounted on the container 12 for close an opening 27 in the product storage region 26 as suggested in Fig. 2 and to cause the sealant layer peeled off by the inner bed 323 in the membrane sheet 32 ​​to engage the flange 24 of the

<img file="MX336356B_D0016.tif" />

Institute container 12 as suggested in Figs. 1, 3, 4, 9 and ΙΐΜθΧίΟαΠΟ daJoProptedcKÍ Then, for example, the sealing layer detached from the inner bed 323 and was attached to the rim of the container using heat applied to the inner bed 323 through the outer bed 321 and core 322 or other suitable means.

It is within the scope of the present disclosure to couple the inner bed 323 of the membrane sheet 32 ​​to the flange of the container 24 through heat applied by conduction or transmission of ultrasonic or electromagnetic energy.

In illustrative embodiments, the foil support ring 30 has an endless edge (eg, round, ring-shaped, square, oblong, etc.) shaped to engage an accompanying container 12. The foil support ring 30 It can be thermoformed or otherwise molded from a suitable plastic material. Suitable materials include polypropylene (PP) or high-density polyethylene (HDPE). The sheet support ring 30 can also be made of polyethylene terephthalate (PET) or crystallized polyethylene terephthalate (CPET) to improve barrier properties. Sheet backing ring 30 can also be made using a material coextruded with barrier polymers such as EVOH or PVdC in a core layer.

In illustrative embodiments, the multilayer membrane sheet 32 ​​can be produced using a coextruded film or sheet product comprising, for example,

<img file="MX336356B_D0017.tif" />

PP or HDPE. Membrane sheet 32 ​​may also include a jyjgxjcap, delgPropI dac, or more barrier layers such as EVOH, NYLON, or PVdC, tie layers, and a sealing layer. The sealing layer can comprise

LDPE or metallic LLDPE, 'PP-based sealant, mixtures of PP and polybutene, as well as sealants based on EMA and EVA.

It is unnecessary to attach a separate thin film or closure sheet to the container from the fill line after container 12 has been filled and before lid 14 is mounted on container 12 when a lid 14 is used in accordance with the present disclosure due, in part, to the provision of a peelable sealant layer 323 in the cap 14 described herein. The cost of packaging and complexity in this minimized and customer-friendly manner is provided with an easy-to-use product characterized by sustainability.

A package in accordance with the present disclosure is well suited for use in hot filled barrier free containers. Can also be used in retortable, barrier containers. Sustainability is increased because the cap is made of similar materials without the inclusion of metal rings and other non-plastic materials in the illustrative modalities.

A package 10 in accordance with the present description includes a container 12 and a lid 14 as suggested in Figs. 1-4. Container 12 is formed to

<img file="MX336356B_D0018.tif" />

¹³ Institute

Mexican include a product storage region 26 &lt;1 ^ ΙαιΛΡΡΐθΛκΙ Industry! rim 24 bordering an opening 27 in the product storage region 26. The lid 14 is adapted to engage with the edge 24 of the container 12 to close the opening 27 in the product storage region 26 formed in the container 12 as is suggested in Fig. 3.

Cap 14 includes a sheet support ring and a membrane sheet 32 ​​as suggested in Figs.

4-7. Membrane sheet 32 ​​is permanently attached to sheet support ring 30 to move therewith relative to container 12 as suggested in FIG. 2.

Έ1 sheet support ring 30 is configured to engage with flange 24 of container 12 when lid 14 is mounted on container 12 to extend around opening 27 in product storage region 26 as suggested in Figs. 1-4. The sheet support ring 30 is also configured to include an inward facing wall 34W arranged to face towards the flange 24 of container 12 as suggested in Figs.

7-9.

The membrane sheet 32 ​​has an outer surface 3210 permanently attached to the sheet support ring 30 to form the cap 14 as suggested in the

Figs. 4, 8 and 10. Membrane sheet 32 ​​also includes an inner surface 3231 configured to provide means

<img file="MX336356B_D0019.tif" />

to engage container 12 temporarily and repeatedly with it to close the opening 27 in the region of the product storage region 26 and to establish a sealed connection between the membrane sheet 32 ​​and the flange 24 of the container 12 each time the Foil holder 30 of lid 14 engages rim 24 of container 12 so that any product 25 stored in product storage chamber 26 is retained in a sealed chamber 100 defined by container 12 and lid 14 as suggested in Figs. 1 and 3.

The membrane sheet 32 ​​includes a perimeter edge 32E arranged to extend between the outer and inner surface 3210, 3231 and to engage with it. an annular rim support surface 34S included in the sheet support ring 30 as suggested in Figs. 6-8. The annular edge support surface 34S has a frusto-conical shape in an illustrative embodiment as suggested in Fig. 7. The perimeter edge 32E of the membrane sheet 32 ​​is permanently attached to the surface

<td>of</td><td>support</td><td>cancel 34S of</td><td>ring</td><td>of</td><td>support</td><td>of</td><td>sheet</td><td> 30</td><td>how</td>

<td>is</td><td>suggested</td><td>in Figs.</td><td>8 and 10.</td><td></td><td></td><td></td><td></td><td></td><td></td>

<td></td><td colspan="2">The ring of</td><td>support</td><td>of</td><td>sheet</td><td colspan="3">30 includes</td><td>a</td>

<td colspan="2">surface</td><td>outdoor 30E</td><td colspan="2">faced</td><td>away &lt;</td><td>of the</td><td>edge</td><td> 24</td><td>of the</td>

container 12 and an inner surface 301 facing toward the rim 24 of container 12 and lying between the

<img file="MX336356B_D0020.tif" />

Institute outer surface 30E the rim 24 of the container 12 ccM ^ XlCOno d Property is suggested in Figs. 3, 4, 9 and 11. The inter-industrial surface

<td>301 includes</td><td>a wall</td><td colspan="2">faced</td><td colspan="2">inward</td><td>34W</td><td>and</td><td>the</td>

<td>surface</td><td>of support</td><td>of</td><td>edge</td><td>cancel</td><td>34S.</td><td>The</td><td colspan="2">wall</td>

<td colspan="2">faced from within</td><td>34W</td><td>has</td><td>form</td><td colspan="3">concave like</td><td>is</td>

<td>suggested in</td><td>Fig. 7.</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td>

<td>The</td><td>surface</td><td colspan="2">Exterior</td><td>3210 of</td><td>the</td><td colspan="2">sheet</td><td>of</td>

Membrane 32 includes a central portion 31 and an endless portion 33 as suggested in Figs. 5 and 6. The central portion 31 is arranged to be above the opening 27 in the product storage region 26 when the lid 14 is mounted on the container 12 as suggested in Figs. 4 and 8-11. Endless portion 33 engages and is arranged to surround central portion 31 and terminate at perimeter edge 32E as suggested in FIG. 6. The endless portion 33 of the outer surface 3210 of the membrane sheet 32 ​​has a shape that is convex in cross section and is arranged to mate with the inward facing wall 34W of the sheet support ring 30 as suggested in Figs. . 4, 8 and 10. The central portion 31 is round and the endless portion 32 is ring-shaped 'in an illustrative embodiment as suggested in Fig. 5. The inward facing wall 34W of the sheet support ring 30 has an annular and concave shape as suggested in Figs. 5 and 7. The wall facing

<img file="MX336356B_D0021.tif" />

Institute inside 34W is formed to define an internal anulfegdcano channel Property 34C with opening towards the rim 24 of the container 12 and ffiÜfustriQl receives the endless portion 33 of the outer surface 3210 of the membrane sheet 32 ​​therein as suggested in Figs . 8 and 10.

The sheet support ring 30 includes an upper surface 30T arranged to meet above the edge 24 of container 12 when lid 14 is mounted on container 12 as suggested in Figs. 4 and 8-11. The outer surface 3210 of the central portion 31 is arranged to meet in a space provided in the upper surface 30T and the inward facing wall 34W of the sheet support ring 30 as suggested in Figs. 8 and 9.

The sheet support ring 30 includes an annular band 30B having a top surface 30T and an annular cap retention lug 30L attached to the annular band 30B at a point below the top surface 30T as suggested in Figs. 7-9. The annular cap retention tab 30L is arranged to be below the flange 24 of container 12 when cap 14 is mounted on container 12 to provide a means for covering a section of membrane sheet 32 ​​between the cap retention tab ring 30L and rim 24 of container to block removal of lid 14 from one position

<img file="MX336356B_D0022.tif" />

mounted on container 12 and 9-11. The central portion as suggested in 1 of the exteritP surface ^^ * ^ ® *

3210 The membrane sheet 32 ​​is located below the top surface 30T of the annular band 30B and above the annular stage retaining lug 30L.

Ring band 30B is formed to include an inward facing wall

34W formed to define an annular inner channel 34C and permanently engage with the outer surface 3210 of the membrane sheet 32 ​​when the perimeter edge 32E of the membrane sheet 32 ​​engages with the annular edge support surface 34S of the support ring sheet 30 as suggested in Figs. 7-9. The inward facing wall 34W is ring-shaped and arched around a circumference thereof in a radically outward direction away from a vertical central axis 10A passing through the lid 14 and the container.

12. The annular edge support surface 34S has a frusto-conical shape as suggested in Fig. 7.

The membrane sheet 32 ​​is a multilayer component comprising an outer bed 321 providing the outer surface 3210, an inner bed 323 providing the inner surface 3231, and a core 322 interposed between and coupled to the outer and inner beds 321, 323 Each of the outer bed, core, and inner bed 321-323 is made of a different material in an illustrative embodiment.

Membrane sheet 32 ​​includes a plate

<img file="MX336356B_D0023.tif" />

Institute

Mexican Endowed Centraftdu Striat Property

32P and an outer flange 32R as suggested in Figs. 8 and 9. The central plate 32P is arranged to engage with the edge 24 of the container 12 and close the opening 27 in the product storage region 26 when the lid 14 is mounted on the container 12. The outer flange 32R engages and it is arranged to extend around the 32P center plate.

The outer flange 32R has a curved shape.

The outer surface 3210 of the outer bed 321 has a convex shape. The inner surface 3231 of the inner bed 323 has a concave shape. The 32P center plate is round and the 32R flange is ring shaped. The outer surface 3210 of the center plate 32P is located below the top surface 30T of the annular band 32B and above the annular cover retention tab 30L.

The sheet support ring 30 can have any rigid or semi-rigid character or any suitable round or non-round shape in accordance with the present description. The foil support ring 30 includes a lid retaining lug 30L or any suitable pairing or coupling means for engaging the flange of container 24 during a capping process to mount cap 14 on container 12 and also during a process of repeated lid reclosing carried out

<img file="MX336356B_D0024.tif" />

by consumers after the lid 14 is first opened to open the package 10. The foil ring 30 also provides a structure for the consumer to push against, during the lid re-closing process. The sheet support ring 30 is made of a material characterized by high temperature stability in illustrative embodiments.

Membrane sheet 32 ​​is a multilayer film that is attached to support ring 30 during an insert molding process in an illustrative embodiment. An aggressive bond is established to permanently attach the membrane sheet 32 ​​to the sheet support ring 30.

Membrane sheet 32 ​​is tightly stretched to engage container rim 24 each time lid 14 is mounted on container 12 in illustrative ways. The membrane sheet 32 ​​functions to prevent the rim of the container 24 from being free of contaminants during capping and re-closing of the lid.

Membrane sheet 32 ​​is flexible and configured to move, deform, and conform in response to changes in pressure in the sealed chamber 100 formed in package 10. Membrane sheet 32 ​​is removable to facilitate disengagement of the rim from container 24 during removal of lid 14 from container 12.

<img file="MX336356B_D0025.tif" />

Membrane sheet 32 ​​is characterized by rigidity, stability

Institute makes a subjectjyjgjdQQ ^ _{Ί +}. (tolahppfeckid at high temperature_1ndustria! high resistance to perforation, and high resistance to explosion. Membrane sheet 32 ​​provides a barrier to a fluid material such as liquid, oxygen, moisture, and solids.

It is within the scope of the present disclosure to bond membrane sheet 32 ​​to sheet support ring 30 during a ring molding process (in-mold label, IML technology). Membrane sheet 32 ​​is formable during a molding or capping process using heat and pressure.

It is within the scope of the present disclosure to configure the membrane sheet 32 ​​to provide one or more of the following obvious indicators of tampering: (1) evidence of tampering through the tactile feel of resistance while being removed in cap 14 of the container; (2) evidence of alteration to I through discoloration due to delamination of the inner bed 323 provided by the release layer; and (3) evidence of alteration through discoloration due to permanent stretching / deformation of one or more of layers 321, 322, 323.

In illustrative embodiments, the multilayer membrane sheet 32 ​​is permanently attached to the support ring

<img file="MX336356B_D0026.tif" />

sheet 30 through adhesion of the film comprising the membrane sheet for example, during an insert molding process. This encapsulates the outer edge 32R forming a smooth surface and forming a mechanical bond. The sheet support ring is higher than the membrane sheet 32 ​​as suggested in the drawings to hermetically pull while the cap and membrane sheet 32 ​​are sealed to accelerate the bonding of the film sealing layer 323 to the flange of the container 24 and to stretch all layers 321-323 through the rim of container 24.

A package 110 in accordance with another embodiment of the description is illustrated in Figs. 12-14. Package 110 includes a container 12 and a lid 114 comprising a sheet support ring 30 and a membrane sheet 132.

The membrane sheet 132 is formed to include a concave central portion 132C encircled by the rim of container 24.