Films and packages for containers

Abstract

A membrane for use with a container is provided herein. The membrane comprises a first layer, the first layer including a peripheral region defined by a first periphery of the first layer and a first line of weakness formed inside the first periphery. The first line of weakness defines a flap. The membrane further comprises a second layer, the second layer including a peripheral zone defined by a second periphery of the second layer and a second line of weakness formed inside the second periphery. The second line of weakness defines a central portion. The membrane further comprises a first seal region, the first seal region including at least a portion of the peripheral zone of the second layer bonded to at least a portion of the peripheral region of the first seal region.

Description

[Technical field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims the benefit of European Provisional Application No. 22305087, entitled "MULTIPURPOSE MEMBRANE FOR CONTAINERS", filed on January 27, 2022, and European Provisional Application No. 22305462, entitled "MULTIPURPOSE MEMBRANE FOR CONTAINERS", filed on April 6, 2022, each of which is incorporated herein in its entirety.

[0002] FIELD OF THE DISCLOSURE The present disclosure relates to container closures, and in particular to paper-based membranes designed to preserve the freshness of products within a container and to provide tamper evident features. [Background technology]

[0003] In many containers used to package dispensable products such as condiments, spices, bite-sized snacks or other foods, plastic dispensers are used to provide controlled dispensing of the container. Many countries and regions have implemented legislation requiring a reduction in the amount of plastic in these types of containers. Generally, even in composite and / or paper-based containers where the container itself is largely free of plastic, plastic-based dispensers exceed the amount of plastic permitted by law.

[0004] Through ingenuity and effort, the inventors have developed a system and method for creating a paper membrane that is reusable in the curbside stream, allows for controlled dispensing of the product, is easy to manufacture and use, and reduces the overall amount of plastic present in the container system. Summary of the Invention

[0005] The present disclosure generally relates to a paper or cardboard membrane for separating a consumer product from an external environment. The membrane can be configured as a dispenser for the product and can provide a tamper-evident feature.

[0006] In an exemplary embodiment of the present invention, a membrane for use with a container is provided. The membrane may comprise a first layer including a peripheral region. The peripheral region may be defined by a first perimeter of the first layer and a first line of weakness formed inside the first perimeter. The first line of weakness may define a flap. The membrane may further comprise a second layer including a peripheral zone. The peripheral zone may be defined by a second perimeter of the second layer and a second line of weakness formed inside the second perimeter. The second line of weakness may define a central portion. The membrane may comprise a first seal region. At least a portion of the peripheral zone of the second layer may be adhered to at least a portion of the peripheral region of the first layer at the first seal region.

[0007] In some embodiments, the first layer can define a first shape and the second layer can define a second shape. In some embodiments, the first shape and the second shape are the same. In some embodiments, the first shape and the second shape are different.

[0008] In some embodiments, the first layer and the second layer are formed from one of paper or cardboard.

[0009] In some embodiments, the membrane further comprises a hinge formed in the first line of weakness. In some embodiments, the seal area can form an airtight seal between the first layer and the second layer. In some embodiments, the first seal area can be provided between an outer periphery of the first layer and the first line of weakness of the first layer. In some embodiments, the first seal area can be provided between a second outer periphery of the second layer and the first line of weakness.

[0010] In some embodiments, the membrane further comprises a second seal area. The second seal area can be disposed between the second line of weakness of the second layer and the first line of weakness of the first layer. In some embodiments, the second seal area can include a peelable adhesive. In some embodiments, the second seal area can include a pressure sensitive adhesive. In some embodiments, the first seal area can include a permanent adhesive. In some embodiments, the first seal area and the second seal area can be formed using the same type of adhesive. In some embodiments, the first seal area and the second seal area can be formed using different adhesives.

[0011] In some embodiments, the flap of the first layer can further include a pull tab. In some embodiments, the pull tab can include a portion of the flap that is configured to fold and extend outwardly from the plane of the first layer. In some embodiments, the flap can be resealable to the peripheral zone.

[0012] In some embodiments, the second layer can further include at least one aperture disposed within the central portion. In some embodiments, the at least one aperture can include a plurality of apertures. In some embodiments, the at least one aperture can be a first aperture and a second aperture, and the first aperture and the second aperture are different sizes.

[0013] In another embodiment of the invention, a package is provided. In some embodiments, the package includes a body defining a top end and an inner wall, a lid configured to be received by the top end of the body, and a membrane adhered to the body. The membrane can include a first layer including a peripheral region. The peripheral region can be defined by a first perimeter of the first layer and a first line of weakness formed inside the first perimeter. The first line of weakness can define a flap. The membrane can further include a second layer including a peripheral zone. The peripheral zone can be defined by a second perimeter of the second layer and a second line of weakness formed inside the second perimeter. The second line of weakness can define a central portion. The central portion can include an opening. The membrane can include a first seal region, and at least a portion of the peripheral zone of the second layer is adhered to at least a portion of the peripheral region of the first layer within the first seal region.

[0014] In some embodiments, at least the first layer of the membrane can be fitted into the inner wall. In some embodiments, the inner wall can further include an inner liner, a sealant layer, or a coating. In some embodiments, the seal area can form an airtight seal between the first layer and the second layer. In some embodiments, the membrane can be bonded to the inner wall of the body. In some embodiments, the membrane can be bonded to a rim surrounding the top end of the body. In some embodiments, the lid can be hingedly attached to the body. In some embodiments, the lid can be rotatably attached to the body. In some embodiments, the lid can include a port, and when the lid is rotated, the port aligns with an opening in the second layer of the membrane.

[0015] In yet another embodiment of the invention, a package is provided. The package includes a body defining a top end and a membrane adhered to an inner surface of the body. The membrane can include a first layer including a peripheral region. The peripheral region can be defined by a first perimeter of the first layer and a first line of weakness formed inside the first perimeter. The first line of weakness can define a flap. The membrane can further include a second layer including a peripheral zone. The peripheral zone can be defined by a second perimeter of the second layer and a second line of weakness formed inside the second perimeter. The second line of weakness can define a central portion, the central portion including an opening. The central portion can further include a first seal region such that at least a portion of the peripheral zone of the second layer is adhered to at least a portion of the peripheral region of the first layer within the first seal region.

[0016] In some embodiments, the top end of the body can be folded inwardly toward the central axis of the body to form a rim. In some embodiments, the flap can include a pull tab configured to tuck under the rim of the body in a re-closed position of the flap. In some embodiments, the pull tab can include a through cut sized and configured to receive a finger for opening the flap.

[0017] A full and enabling disclosure directed to one of ordinary skill in the art is set forth herein with reference to the accompanying drawings. [Brief description of the drawings]

[0018] [Figure 1A] FIG. 2 is a bottom view of a membrane according to some embodiments of the present disclosure. [Figure 1B] FIG. 2 is a top view of a membrane according to some embodiments of the present disclosure. [Figure 2A] FIG. 1B is a top view of a first layer of the membrane shown in FIG. 1A according to some embodiments of the present disclosure. [Figure 2B] FIG. 1B is a bottom view of a first layer of the membrane shown in FIG. 1A according to some embodiments of the present disclosure. [Diagram 3] FIG. 1B is a top view of the second layer of the membrane shown in FIG. 1A according to some embodiments of the present disclosure. [Figure 4A] FIG. 2 is a top view of a membrane according to some embodiments of the present disclosure. [Figure 4B] FIG. 2 is a top view of a membrane according to some embodiments of the present disclosure. [Figure 4C] FIG. 2 is a top view of a membrane according to some embodiments of the present disclosure. [Figure 4D] FIG. 2 is a top view of a membrane according to some embodiments of the present disclosure. [Diagram 5] FIG. 1B is a front view of a welding device used to form the membrane shown in FIG. 1A according to some embodiments of the present disclosure. [Figure 6A] FIG. 1B is a perspective view of a container using the membrane shown in FIG. 1A according to some embodiments of the present disclosure. [Figure 6B] FIG. 1B is a perspective view of a container using the membrane shown in FIG. 1A according to some embodiments of the present disclosure. [Figure 7A] FIG. 1B is a perspective view of a container using the membrane shown in FIG. 1A according to some embodiments of the present disclosure. [Figure 7B] FIG. 1B is a perspective view of a container using the membrane shown in FIG. 1A according to some embodiments of the present disclosure. [Figure 7C] FIG. 1B is a perspective view of a container using the membrane shown in FIG. 1A according to some embodiments of the present disclosure. [Figure 7D] FIG. 1B is a perspective view of a container using the membrane shown in FIG. 1A according to some embodiments of the present disclosure. [Figure 8A] 1B is a perspective view of the opening and closing of the flap of the membrane shown in FIG. 1A according to some embodiments of the present disclosure. [Figure 8B] 1B is a perspective view of the opening and closing of the flap of the membrane shown in FIG. 1A according to some embodiments of the present disclosure. [Figure 8C] 1B is a perspective view of the opening and closing of the flap of the membrane shown in FIG. 1A according to some embodiments of the present disclosure. [Figure 8D] 1B is a perspective view of the opening and closing of the flap of the membrane shown in FIG. 1A according to some embodiments of the present disclosure. [Figure 8E] 1B is a perspective view of the opening and closing of the flap of the membrane shown in FIG. 1A according to some embodiments of the present disclosure. [Figure 9] 1B illustrates an exemplary configuration of an aperture in the membrane shown in FIG. 1A according to some embodiments of the present disclosure. [Figure 10A] FIG. 1B is a perspective view of a container using the membrane shown in FIG. 1A according to some embodiments of the present disclosure. [Figure 10B] FIG. 1B is a perspective view of a container using the membrane shown in FIG. 1A according to some embodiments of the present disclosure. [Figure 10C] FIG. 1B is a perspective view of a container using the membrane shown in FIG. 1A according to some embodiments of the present disclosure. [Figure 10D] FIG. 1B is a perspective view of a container using the membrane shown in FIG. 1A according to some embodiments of the present disclosure. [Figure 10E] FIG. 1B is a perspective view of a container using the membrane shown in FIG. 1A according to some embodiments of the present disclosure. [Figure 10F] FIG. 1B is a perspective view of a container using the membrane shown in FIG. 1A according to some embodiments of the present disclosure. [Figure 11A] FIG. 1B is a perspective view of an exemplary embodiment of the exemplary membrane shown in FIG. 1A adhered to an exemplary container, according to some embodiments of the present disclosure. [Figure 11B] FIG. 1B is a perspective view of an exemplary embodiment of the exemplary membrane shown in FIG. 1A adhered to an exemplary container, according to some embodiments of the present disclosure. [Figure 11C] FIG. 1B is a perspective view of an exemplary embodiment of the exemplary membrane shown in FIG. 1A adhered to an exemplary container, according to some embodiments of the present disclosure. [Figure 12A] FIG. 1B is a perspective view of an exemplary embodiment of the exemplary membrane shown in FIG. 1A adhered to an exemplary container, according to some embodiments of the present disclosure. [Figure 12B] FIG. 1B is a perspective view of an exemplary embodiment of the exemplary membrane shown in FIG. 1A adhered to an exemplary container, according to some embodiments of the present disclosure. [Figure 12C]FIG. 1B is a perspective view of an exemplary embodiment of the exemplary membrane shown in FIG. 1A adhered to an exemplary container, according to some embodiments of the present disclosure. [Figure 12D] FIG. 1B is a perspective view of an exemplary embodiment of the exemplary membrane shown in FIG. 1A adhered to an exemplary container, according to some embodiments of the present disclosure. [Figure 13A] FIG. 1B illustrates an exemplary embodiment of the membrane shown in FIG. 1A adhered to an exemplary container, according to some embodiments of the present disclosure. [Figure 13B] FIG. 1B illustrates an exemplary embodiment of the membrane shown in FIG. 1A adhered to an exemplary container, according to some embodiments of the present disclosure. [Figure 13C] FIG. 1B illustrates an exemplary embodiment of the membrane shown in FIG. 1A adhered to an exemplary container, according to some embodiments of the present disclosure. [Figure 13D] FIG. 1B illustrates an exemplary embodiment of the membrane shown in FIG. 1A adhered to an exemplary container, according to some embodiments of the present disclosure. [Figure 14A] FIG. 1 illustrates an exemplary membrane-based container system according to some embodiments of the present disclosure. [Figure 14B] FIG. 1 illustrates an exemplary membrane-based container system according to some embodiments of the present disclosure. [Figure 14C] FIG. 1 illustrates an exemplary membrane-based container system according to some embodiments of the present disclosure. [Figure 14D] FIG. 1 illustrates an exemplary membrane-based container system according to some embodiments of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Repeat use of reference characters in the present specification and drawings is intended to indicate same or analogous features or elements of the present disclosure.

[0020] Reference will now be made in detail to the embodiments of the present disclosure, one or more examples of which are illustrated in the accompanying drawings. Each example is provided as an explanation of the disclosure, not a limitation of the disclosure. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the disclosure without departing from the scope or spirit of the disclosure. For example, features illustrated or described as part of one embodiment can be used on another embodiment to yield still further embodiments. It is therefore intended that the present disclosure cover such modifications and variations as come within the scope of the appended patents and their equivalents.

[0021] 1A-1B show a multi-purpose membrane 100 for use in a container system. In some embodiments, the container includes a paper-based container, a cardboard-based container, or a composite container. In some embodiments, the container can use recycled paper and / or cardboard, virgin paper or cardboard, or a combination of recycled and virgin paper and / or recycled and virgin cardboard. In one embodiment, the container system can include a container, a membrane, and a lid. In some cases, the lid can be removable and optionally replaceable to the container. In some embodiments, the lid can be paper-based, cardboard-based, plastic-based, pulp paper-based, or composite. In one embodiment, the membrane 100 provides an airtight seal prior to the first opening of the container. In some embodiments, until the first opening of the membrane 100, the membrane remains hermetically sealed to the container when the lid is removed from the container.

[0022] In some embodiments, the multipurpose membrane 100 includes a first layer 110 and a second layer 120. In some embodiments, the first layer 110 can have a first perimeter 111 that defines a first shape, and the second layer 120 can have a second perimeter 121 that defines a second shape. In some embodiments, the first shape and the second shape are the same shape (e.g., both are circular, square, triangular, or irregularly shaped), while in other embodiments, the first shape and the second shape are different.

[0023] In some embodiments, the first circumference 111 is larger than the second circumference 121 and, accordingly, the first shape is larger than the second shape, while in some embodiments, the first circumference 111 and the second circumference 121 may be equal (i.e., the first layer 110 and the second layer 120 are the same size). In some embodiments, the first layer 110 and the second layer 120 may form a concentric shape, while in other embodiments, the first layer 110 and the second layer 120 may be coaxial.

[0024] In some embodiments, the first layer 110 and the second layer 120 of the membrane 100 can be separable from one another. The first layer 110 can define a first line of weakness 112 disposed inside the first perimeter 111. The first line of weakness 112 can take any shape that can facilitate, for example, fracturing the layer, and in some embodiments, the first line of weakness 112 can extend partially through the first layer 110, while in other embodiments, the first line of weakness 112 can define a series of perforations through the first layer 110. In still other embodiments, the line of weakness 112 can include a throughcut through the first layer 110 that surrounds a majority of the desired opening.

[0025] 2A-2B show the first layer 110 of the membrane 100. In some embodiments, the first line of weakness 112 can define a flap 116 and a peripheral region 115. In some embodiments, the first line of weakness 112 can be circular, triangular, or irregularly shaped. The flap 116 can be interior to the first line of weakness 112, while the peripheral region 115 can extend between the first perimeter 111 and the first line of weakness 112. In some embodiments, the first line of weakness 121 can form a closed shape such that the flap 116 is removable from the peripheral region 115 of the first layer 110, while in some embodiments, the flap 116 can remain attached to the peripheral region 115 by a hinge 112b, with the first line of weakness 112 being discontinuous around the hinge 112b. In some embodiments, the hinge 112b is sized and configured so that it can be torn off when the flap 116 is opened.

[0026] The flap 116, in some embodiments, may be circular, triangular, or other shape, and the shape of the flap 116 may correspond to the product to be dispensed. In some embodiments, the first line of weakness 112 may be concentric or coaxial with the first perimeter 111, while in other embodiments, the first line of weakness 112 may be eccentric relative to the first perimeter 111. In some embodiments, the flap 116 may be the same shape as the first layer 110, while in other embodiments, the flap 116 may define a different shape than the first layer 110.

[0027] In some embodiments, the flap 116 can be peelable from the first layer 100. In some embodiments, the flap 116 can include a pull tab 114. In one embodiment, the pull tab is defined by a portion 112a of the first line of weakness 112 and a groove or crease 113 formed in the first layer 100. In some embodiments, the crease 113 can be formed along a chord of the flap 116, the chord being a line segment connecting two end points of the perimeter that does not pass through the center of the shape. In some embodiments, the portion 112a of the first line of weakness 112 can be a through cut in the first layer, such that the pull tab 114 can be peeled away from the peripheral region 115 of the first layer 110 once the crease 113 is made.

[0028] In some embodiments, the pull tab 114 can extend outwardly from the plane of the first layer 110, e.g., folded back on itself, such that the pull tab 114 can be easily grasped. The pull tab 114 can be manipulated to break the first line of weakness 112 or hinge 112b to separate the flap 116 from the peripheral region 115. In some embodiments, the first line of weakness 112 can form a closed shape such that the pull tab 114 and flap 116 can be peeled away from the peripheral region 115 and completely removed from the first layer 110 and membrane 100.

[0029] In some embodiments, the flap 116 can remain attached to the peripheral region 115 by a hinge 112b formed in the first line of weakness 112. In some embodiments, the hinge 112b can be formed along the first line of weakness 112 opposite the portion 112a that defines the pull tab 114, while in other embodiments, the hinge 112b can be formed at any point along the first line of weakness 112. In some embodiments, the hinge 112b can be sized and configured such that the flap 116 does not easily detach from the peripheral region 115 when the pull tab 114 is pulled up.

[0030] The hinge 112b can allow the flap 116 to provide access to the second layer 120, and thus, in some embodiments, to the product within the container system. In this embodiment, the flap 116 can be peeled away from and returned to the second layer 120. In some embodiments, the underside of the flap 116 or the top side of the second layer 120 can be patterned with a pressure sensitive adhesive (adhesive). The pressure sensitive adhesive can hold the membrane 100 sealed when the flap 116 is returned to the second layer 120 in the plane of the membrane 100.

[0031] In some embodiments, the first line of weakness 112 can be configured as a tamper evident feature. For example, in one embodiment, the first line of weakness 112 can break as the flap 116 is peeled away. Upon peeling or initial opening, the flap 116 can be peeled away or configured such that the first line of weakness 112 visibly shifts and the flap 116 does not reseal in the exact location that coincides with the peripheral region 115.

[0032] In some embodiments, the pull tab 114 can be formed in the first layer 110 prior to the application of the second layer 120. After formation of the membrane 100, the second layer 120 can be made accessible by breaking the first line of weakness 112 by manipulating the pull tab 114.

[0033] The first layer 110 can be cardboard or paper based. In some embodiments, the first layer 110 can be a single layer, while in other embodiments, the first layer 110 can include multiple paper layers, multiple cardboard layers, or a combination of paper and cardboard layers. In some embodiments, the first layer 110 can include a barrier layer. The barrier material can provide a moisture barrier and / or an oxygen barrier. In some embodiments, the first layer 110 can be coated with a barrier material, such as aluminum, PET, bioplastic, or other barriers known or developed within the art. In some embodiments, one or both sides of the first layer 110 can include a sealant layer or be coated with a sealant. The sealant can provide the barrier properties. In some embodiments, the sealant can be polyethylene, bioplastic, bioresin, white glue, combinations thereof, or any other sealant known in the art.

[0034] In some embodiments, the first layer 110 can define a first diameter D1 across the first perimeter 111 and a second diameter D2 extending across the first line of weakness 112. The first diameter D1 can be greater than the second diameter D2. In some embodiments, the first diameter D1 is configured to be greater than the diameter of the container such that a portion of the first layer 110 can be adhered to an inner portion of the container wall, an outer portion of the container wall, or around the rim of the container to secure the membrane 100 to the container. In some embodiments, the first layer 110 can be recessed within and adhered to the container wall. In some embodiments, the container can include an inner liner and / or a sealant layer or coating, such as polyethylene or any other sealant described herein or known in the art.

[0035] The membrane 100 may include a second layer 120 as shown in FIG. 3. In the context of a container, the second layer 120 may include an inner layer of the membrane 100. The second layer 120 may be cardboard-based or paper-based. In some embodiments, the second layer 120 may be a single layer, while in other embodiments, the second layer 120 may include multiple paper layers, multiple cardboard layers, or a combination of paper and cardboard layers. The second layer 120 may be defined by a second perimeter 121. In some embodiments, the second perimeter 121 may be circular, triangular, or irregularly shaped. A second line of weakness 122 may be formed in the second layer 120 that defines a central portion 126. The second line of weakness 122 can take any shape that can facilitate, for example, breaking the layer, and in some embodiments, the second line of weakness 122 can extend partially through the second layer 120, while in other embodiments, the second line of weakness 122 can define a series of perforations through the second layer 120.

[0036] In some embodiments, central portion 126 may be circular, triangular, or irregularly shaped. In some embodiments, second line of weakness 122 may be concentric or coaxial with second perimeter 121, while in other embodiments, second line of weakness 122 may be eccentric relative to second perimeter 121. In some embodiments, central portion 126 may define the same shape as second layer 120, while in other embodiments, central portion 126 may define a different shape than second layer 120.

[0037] The second layer 120 can define a peripheral zone 125 extending between the second perimeter 121 and the second inner line of weakness 122. In some embodiments, an adhesive applied to the top surface of the second layer 120 can be patterned in the peripheral zone 125. In some embodiments, the adhesive can be a pressure sensitive adhesive (adhesive) such that the flap 116 can be resealed to the peripheral zone 125 after initial opening.

[0038] The second layer 120 can define a third diameter D3 extending across the second perimeter 121, and the second line of weakness 122 can define a fourth diameter D4. The third diameter D3 can be smaller than the fourth diameter D4. In some embodiments, the third diameter D3 of the second layer 120 is smaller than the first diameter D1 of the first layer 110, while in some embodiments, the third diameter D3 is equal to the first diameter D1. In some embodiments, the third diameter D3 is larger than the second diameter D2 such that the second layer 120 remains otherwise adhered to the first layer 110 when the pull tab 114 is manipulated to break or open the first line of weakness 112.

[0039] In some embodiments, the second layer 120 can have one or more apertures 124. In one embodiment, the apertures 124 can be formed in a central portion 126 of the second layer 120. In some embodiments, the apertures 124 can be positioned inside the second line of weakness 122 (e.g., in the central portion 126), while in other embodiments, the apertures 124 can be positioned outside thereof (e.g., in the peripheral zone 125). The shape and size of the apertures 124 can correspond to the product to be dispensed from the container.

[0040] In some embodiments, the aperture 124 can be multiple apertures in the central portion 126 (see, e.g., FIG. 9). For example, the aperture 124 can include multiple smaller apertures for dispensing powdered product, while an aperture 124 with a single larger aperture can be used for larger sized items, such as gum or sugar cubes. In some embodiments, the aperture 124 can include a grid. In some embodiments, the central portion 126 can include multiple types of apertures. In some embodiments, the second layer 120 can include apertures 124 around the second perimeter 121. In some embodiments, the central portion 126 can include multiple types of apertures, for example, a first aperture can be configured as a shaker, while a second aperture can be configured to receive a spoon or to dispense a larger amount of product or to dispense product at a higher speed.

[0041] In some embodiments, the central portion 126 can be peeled away to allow a larger product and / or a higher flow rate of product to be dispensed through the membrane 100. In some embodiments, the central portion 126 can be peeled away by breaking the second line of weakness 122. In some embodiments, a second hinge 122b can break the second line of weakness 122. The second hinge 122b allows for manipulation of the central portion 126 to allow a higher flow rate of product from the container and allows for repositioning the central portion 126 to coincide with the peripheral region 125 to return to a lower flow rate of product from the container. In some embodiments, the second line of weakness 122 can be formed such that after breaking, the central portion 126 can be reattached to the second layer 120 along the second line of weakness 122.

[0042] In some embodiments, the film 100 can be configured such that the second layer 120 faces the product. In some embodiments, the second layer 120 can be a single layer, while in other embodiments, the second layer 110 can include multiple paper or cardboard layers. In some embodiments, the second layer 120 can include a barrier layer. The second layer 120 can be food safe.

[0043] 4A-4D show a through cut view of the membrane 100. In some embodiments, shown in FIGS. 4A-4B, the membrane 100 can include a first sealing region 130 and a second sealing region 131. An adhesive applied to the first layer 110 (or optionally the second layer 120) can be patterned in the first sealing region 130 and the second sealing region 131. When applied to the first layer 110, the first sealing region 130 can include regions inside and outside the second perimeter 121 when the second layer 120 is aligned to the first layer 110. In some embodiments, the first sealing region 130 can be sized to ensure alignment and sealing between the first layer 110 and the second perimeter 121. In one embodiment, the first sealing region 130 can include a permanent seal. 4A, in some embodiments, the second sealed region 131 can be provided inward of the first line of weakness 112 and outward of the second line of weakness 122. The second sealed region 131 can provide a secondary seal such that the opening 124 is preferably hermetically sealed before the flap 116 is unsealed. In one embodiment, the second sealed region 131 can include a peelable seal.

[0044] 4B, the second sealed area 131 can partially overlap a portion 122a of the second line of weakness 122 that forms the pull tab 114. This overlap can create an airtight seal when the pull tab 114 is folded, i.e., folded back out of the plane of the membrane 100, but before the flap 116 is unsealed.

[0045] In some embodiments, the first sealing area 130 can be formed from a pattern application of a first adhesive, and the second sealing area 131 can be formed from a pattern application of a second adhesive. The adhesive can be a permanent adhesive, a pressure sensitive adhesive, or other adhesive used to bond layers together. In some embodiments, the first adhesive and the second adhesive are the same type of adhesive, while in other embodiments, the first adhesive and the second adhesive are different types of adhesive. For example, the first adhesive can be a permanent adhesive and the second adhesive can be a pressure sensitive adhesive to allow peelability of the flaps and to allow the flap 116 to reseal to the second layer 120 after opening while maintaining the structure of the membrane 100. In some embodiments, the same adhesive can be used for the first sealing area 130 and the second sealing area 131, but more heat, pressure, or a combination thereof can be applied to the first sealing area 131 to create a stronger seal.

[0046] In some embodiments, the second sealing area 131 is configured to maintain an airtight seal of the membrane to preserve freshness and extend the shelf life of the product within the container.

[0047] 4C, the membrane 100 can define only one sealed region 132. The one sealed region 132 can extend from the peripheral region 115 of the first layer 110 to the second perimeter 121 and the first line of weakness 111. In some embodiments, the sealed region 132 can be formed from a permanent adhesive, while in other embodiments, the sealed region 132 can be formed from a pressure sensitive adhesive.

[0048] 4D illustrates an alternative embodiment in which the first layer is configured as a flap. As shown, the third diameter D3 extending across the second perimeter 121 can be greater than the first diameter D1 extending across the first perimeter 111. In such an embodiment, the seal area 130 can be formed in the peripheral zone 125 of the second layer 120 between the second line of weakness 122 and the second perimeter 120. The adhesive can be patterned such that the pull tab 114 is free of adhesive. In some embodiments, the first layer 110 configured as a flap 116 can be resealable to the peripheral zone 125 of the second layer.

[0049] In some embodiments, the membrane 100 can be formed using a welding device. The welding device 300, shown in Figures 5A-5B, can be configured to apply pressure to the first and second layers in the sealing area to form a seal. In some embodiments, the welding device 300 can include a first ridge 340 and a second ridge 341. The number of ridges in the counter welding device 300 can correspond to the number of sealing areas in the membrane.

[0050] In some embodiments, the first ridge 340 and the second ridge 341 may be the same height, while in other embodiments, the first ridge 340 and the second ridge 340 may be different heights. These heights and / or the difference in height between the first ridge 340 and the second ridge 341 may contribute to the amount of pressure applied to the sealing region.

[0051] The welding device 300 can be configured to be received by a die. In some embodiments, the die can be a flat surface such that the layers 110, 120 can be pressed against the flat surface such that the ridges 340, 341 bond the first layer 110 and the second layer 120 to one another. In some embodiments, the die can include a varying thickness to accommodate the ridges 340, 341. In some embodiments, the welding device 300 can apply a varying force throughout the welding process.

[0052] In some embodiments, a varying pressure may be applied to the counter welding device 300 as it engages the die.

[0053] In some embodiments, the welding device 300 can be a solid device, in which case the ridges are provided on a backing 345. In some embodiments, the backing 345 can be configured to minimize the amount of material required, for example, the backing 345 can define openings to reduce the weight of the welding device 300.

[0054] Although a first ridge and a second ridge are described herein, any suitable number of ridges may be used.

[0055] In some embodiments, the membrane 100 can be placed inside the container 200, optionally in a telescopic manner, as shown in Figures 6A-6B. In some embodiments, the container can include a paper-based container. In particular, the container can be made by the methods disclosed in U.S. Patent No. 9,975,306, entitled "Method and Machine for Assembling Rigid Tubular Bodies Made from A Cardboard Material with a Sealing Structure," filed on November 27, 2013, and / or U.S. Patent No. 10,315,377, entitled "Method for Assembling Tubular Bodies Made from a Cardboard material with a Sealing Structure," filed on November 25, 2014, each of which is incorporated herein by reference in its entirety. In one embodiment, the container system can include a container, optionally a lid, and a membrane. In one embodiment, the membrane 100 provides an airtight seal before initial opening.

[0056] FIG. 6A illustrates an exemplary container 200 in a closed position. The container 200 defines a lid 205 and a body 207. In some embodiments, the lid 205 is snapped and hinged to the body 207 of the container 200. FIG. 6B illustrates the container 200 in an open position. The lid 205 pivots about a pivot point 213 in the body 207 of the container 200. In some embodiments, the lid 205 is fully removable and replaceable relative to the body 207 of the container 200. As shown in the open position, the membrane 100 can snap into the body 207 of the container 200. In some embodiments, the peripheral region 115 of the first layer 110 is adhered to the body 207 of the container 200, while in other embodiments, the peripheral zone 125 of the second layer 120 may be adhered to the body 207 of the container 200.

[0057] In some embodiments, the pull tab 114 may be positioned adjacent to the pivot point 213 of the container 200, while in other embodiments, the membrane 100 may be oriented such that the pull tab 114 may be positioned opposite the pivot point 213 of the container 200 or at any point around the body 207 of the container 200.

[0058] 7A-7D show a container system 200 in an exemplary embodiment. FIG. 7A shows the container 200 in an open position, thereby exposing the membrane 100. The flap can be lifted to break the seal between the first layer 110 and the second layer 120. As shown in FIG. 7B, peeling the flap 116 from the central portion 126 exposes the opening 124, providing access to the contents of the body 207 of the container 200. In some embodiments, the lid 205 can pivot back onto the body 207 of the container 200 and seal the opening 124. In some embodiments, the lid 207 can include a barrier layer configured to keep the contents of the container fresh.

[0059] 7C-7D show removal of the central portion 126 from the second layer 120. In some embodiments, the opening 124 may be too small to properly dispense the product (e.g., the product is too large, the dispense speed is slow), or may not properly dispense all of the product from the container. The central portion 126 may be removed by breaking the second line of weakness 122 (see, e.g., FIG. 3), thereby providing the enlarged opening 128. In some embodiments, the central portion 126 of the second layer 120 may be removed without peeling the flap 116 from the membrane 100 (see, e.g., FIG. 8C). In some embodiments, the central portion 126 may be hingedly attached to the peripheral zone 125 so that the membrane 100 may transition between the opening 124 and the enlarged opening 128.

[0060] 8A-8E show the container 200 in an open configuration in which the flap 116 can be peeled and replaced against the second layer 120. In some embodiments, the flap 116 can remain attached to the second layer 120 by the hinge 116. In some embodiments, the flap 116 can be peelably sealed to the second layer 120 by an adhesive. The adhesive can be a pressure sensitive adhesive provided around the peripheral zone 125. The pressure sensitive adhesive can be configured such that the flap 116 can be peeled and replaced up to 100 times, up to 150 times, or even up to 200 times. In some embodiments, the flap 116 can be re-secured to the peripheral zone 125 before the lid 205 is returned to the closed position. Meanwhile, in some embodiments, the pressure from replacing the lid 205 on the body 207 of the container 200 can reseal the flap 116 to the second layer 120, as shown in FIG. 8E.

[0061] FIG. 9 illustrates multiple configurations of the second layer 120 of the membrane 100. In some embodiments, the central portion 126 includes a single aperture 124 as described above. The aperture 124 may be circular or oval in shape, while in other embodiments, the aperture 124 may be any solid shape, such as square, triangular, hexagonal, etc. In some embodiments, the central portion 126 may include multiple apertures, such as a large aperture 124 and a shaker aperture 127, as shown in B. The shaker aperture 127 may be configured to allow a smaller amount of product to be dispensed at one time. In some embodiments, the central portion 126 may include a grid shaker 129, as shown in I, configured to delump the product while allowing more product from the shaker compared to the sprinkle shaker 127. In some embodiments, the central portion 126 may include an enlarged aperture 128.

[0062] The aperture 124, the opening 127, or other apertures may also be provided in the peripheral zone 125 of the second layer 120. In some embodiments, the aperture(s) may be provided in the peripheral zone 125 and adjacent to the second line of weakness 122, while in other embodiments, the aperture(s) may be provided only in the peripheral zone 125.

[0063] In some embodiments, the container 200 is configured for use with a lid 205 in a closed configuration. In such embodiments, the lid 205 can be rotatably attached to the body 207 of the container 200. As shown in FIGS. 10A-10C, the lid 205 can include a port 214 covered by a seal 216. In some embodiments, the seal 216 can be precut in the lid 205. The lid 205 can be removed from the body 207 of the container 200 to peel the flap 116 from the membrane 100. After the flap 116 is peeled from the membrane 100, the lid 205 can be replaced on the body of the container 200. In this regard, the opening 124 and the port 214 can define a channel connecting the inner body of the container 200 to the outer periphery. In some embodiments, the seal 216 can be resealable around the port 214.

[0064] The lid 205 can be rotatably attached to the body 207 such that the port 214 can align with the opening 124 of the membrane 100 to allow product to exit the container 200 through the opening 124 and the port 214. In some embodiments, the lid 205 can be configured to be flush with the membrane 100 such that when the lid 205 is rotated to a closed position (e.g., FIG. 10D), the lid 205 is configured to seal with the membrane 100 to keep the contents within the container 200 and keep the contents of the container 200 fresh. As shown in FIGS. 10D-10F, the lid 205 can be rotated either clockwise or counterclockwise from a closed position (e.g., FIG. 10D) to an open position (e.g., FIG. 10E-10F). The open position can align the opening 124 with the port 214 to allow the contents of the container 200 to be dispensed. The location of the port 214 on the opening 124 can affect the amount or rate at which product is dispensed from the container 200. For example, the port 214 can be positioned such that only a portion of the opening 124 is accessible to provide a lower flow rate of product (e.g., FIG. 10F), or such that the entire opening 124 is accessible to provide a higher flow rate (i.e., adjustable flow rate) of product (e.g., FIG. 10E). Although only one opening 124 is shown, it should be understood that the second layer 120 may include multiple openings or multiple (types of) openings, as shown with reference to FIG.

[0065] In some embodiments, the lid 205 of the container 200 can be configured to interact with container bodies of various heights. For example, the lid 205 can be configured for use with a first body 207a that defines a height of 70 mm and a second body 207b that defines a height of 99 mm. In some embodiments, the body 207 of the container 200 can define a height between 50 and 250 mm, between 55 and 250 mm, between 60 and 250 mm, or in some embodiments, between 45 and 300 mm. In some embodiments, the container 200 can define a volume of at least 95 ml. In some embodiments, the container 200 can define a volume of up to 250 ml. Although exemplary container 200 sizes are described, it should be understood that any container 200 size can be used with the membrane 100.

[0066] In some embodiments, the lid 205 can be reusable. For example, a consumer can begin by purchasing a starter container that includes the product sealed in the body 207 by the membrane 100 and the lid 205. The user can then purchase a container without the lid, that includes the product in the body 207 sealed by the membrane 100. The user can then use the existing lid 205 for the new container.

[0067] In some embodiments, the membrane 100 can be positioned on a rim of a container. Figures 11A-11C show a container 300 including a rim 330 that surrounds a top end 331 of a body 307 of the container 300. The rim 330 can be a rolled rim, where a portion of the top end 331 is rolled onto an outer surface 307b of the body 307. The rim 330 can define a surface 330a configured to receive and hold the membrane 100. In some embodiments, the rim 330 can define a diameter that is larger than the body 307.

[0068] In some embodiments, the peripheral region 115 of the membrane 100 can be adhered to the surface 330a of the rim 330 with a permanent adhesive. The permanent adhesive can be applied to the underside of the first layer 110 of the membrane 100. In some embodiments, the adhesive is applied to the surface 330a of the rim 330 of the container 300.

[0069] In some embodiments, the membrane 100 can be flush with the underside of the lid 305 when the lid 305 is placed over the container 300. In some embodiments, the lid 305 when placed over the top edge 331 can create a seal over the opening 124 when the flap 116 is peeled away. In some embodiments, the flap 116 remains attached to the membrane 100 after opening. In such embodiments, placing the lid 305 back onto the container 300 can help reseal the flap 116 to the peripheral zone 125 of the membrane 100.

[0070] In some embodiments, the membrane 100 can be configured to be fitted within the container 300 while being adhered around the rim 330, as shown in Figures 12A-12D. Figure 12A shows the container 300 in a lid 305 configured as an overcap. The lid 305 can be configured to interact with the rim 330 of the body 307. Figure 12B shows a cross-sectional view of the container 300 showing the membrane 100 fitted within the top end 331 of the body 307 such that the membrane 100 can be spaced from the bottom surface 305a of the lid when the lid 305 is placed over the body 307 of the container 300.

[0071] 12C-12D show the peripheral region 115 of the membrane 100 bonded around the rim 330 of the container 300. The peripheral region 115 of the first layer 110 extends from the inner surface 330a of the rim 330 along the outer surface 330b of the rim 330. The first perimeter 111 of the membrane 100 can be located at the outer surface 330b of the rim 330.

[0072] In some embodiments, the second layer 120 of the membrane 100 may abut the inner surface 307a of the body 307, while in other embodiments, the second layer 120 may not extend to the inner surface 307a of the body 307, as shown in FIG. 12C.

[0073] In some embodiments, the adhesive extends from the outer surface 330b of the rim 330 across the rim 330 to the inner surface 330a of the rim 330. In some embodiments, the membrane 100 may be adhered to the entire outer surface 330b of the rim 330, while in other embodiments, the membrane 100 may be adhered to only a portion of the outer surface 330b of the rim 330. In some embodiments, the adhesive may be applied to the top end 331 of the container 300, while in other embodiments, the adhesive may be applied to the peripheral region 115 of the first layer 110. The membrane 100 may be applied to the top end 331 after application of the adhesive.

[0074] In some embodiments, the membrane 100 can be configured as a barrier between the contents of the container and the atmosphere. As shown in FIGS. 13A-13D, the container 400 can be configured such that the membrane 100 can function as a lid for the container 400. As shown in FIG. 13A, the container system 400 includes a body 407 and a rim 433. The rim 433 can be formed to surround a portion of the peripheral region 115. In some embodiments, the rim 433 can help secure the peripheral region 115 of the membrane to the inner surface 407a of the body 407. In some embodiments, a through cut 119 can be formed in the pull tab 114. The through cut 119 can be circular, linear, triangular, or other shape configured to help move the pull tab 114 out of the plane of the membrane 100. In some embodiments, the pull tab 114 can be formed as part of or secured to the flap 116 prior to opening.

[0075] 13B shows a cross-sectional view of the container system 400. As shown, the rim 433 and the body 407 are formed from a continuous piece of material. The rim 433 can wrap inward (e.g., toward the central axis of the body 207) until the material reaches the inner surface 407a of the body 407. In some embodiments, the rim 430 is folded to define an angle of up to 90 degrees with the inner surface 407a, an angle of up to 70 degrees with the inner surface 407a, or an angle of up to 45 degrees with the inner surface 407a of the body 407. In some embodiments, the rim top 431 of the body 407 can be folded, rolled, creased, curled, crimped, or the like to form the rim 433.

[0076] In some embodiments, the rim 433 may contact the membrane 100 , while in other embodiments, the edge 433 a of the rim 433 may not contact the membrane 100 .

[0077] In some embodiments, a portion of the peripheral region 115 may be provided inside the rim 433. In some embodiments, the top end 431 may be folded over towards the inner surface 407a of the body 407. In some embodiments, the curled rim 433 may be folded over to contact the membrane 100.

[0078] In some embodiments, shown in FIG. 13C, the first line of weakness 112 can be separated or broken upon manipulation of the pull tab 114. The first line of weakness 112 can be opened or broken to provide access to an opening in the central portion 126. In some embodiments, the flap 116 can be returned to the peripheral zone 125 of the second layer 120. The edge 112c of the pull tab 114, shown in FIG. 13D, can be manually positioned under the rim 433 to re-secure the flap 116 in the plane of the membrane 100. In some embodiments, the pull tab can extend from the fold 117 to the first perimeter 111. In some embodiments, the flap 116 can define various diameters. In some embodiments, the flap can define a pull tab diameter D2' that extends from the edge of the pull tab 114 across the flap 116. The flap can define a second diameter D2 that extends perpendicular to the pull tab diameter D2'. The pull tab diameter D2' can be larger than the second diameter D2 such that the pull tab 114 is configured to extend further into the peripheral region 115 and be positioned below the rim 433 of the body 407. In one embodiment, the pull tab 114 is sized to extend slightly beyond the rim 433 as it extends. In this embodiment, the pull tab 114 can be tucked under the rim 433 in the re-closed position of the flap 116.

[0079] In some embodiments, a through-cut 119 can be used to insert a finger and manipulate the pull tab 114 out from under the rim 433 to re-open the flap 116 and provide access to the contents of the container 400. This process can be repeatable any number of times to provide a re-closure feature for the container system.

[0080] In some embodiments, the peripheral region 115 of the membrane 100 can be adhered to the inner surface 407a with a permanent adhesive. In some embodiments, the membrane 100 can be adhered to the entire upper end 431 of the body 407 such that a portion of the peripheral region 115 is within the rim 433.

[0081] In one embodiment, the film 100 can be formed in an in-line process. In some embodiments, the container 400 can be formed as it is filled. To illustrate, in some embodiments, the container 400 can be die cut and laid flat. In some embodiments, a portion of the film 100 can be adhered to a portion of the inner surface of the unformed container. The container can be formed into a cylindrical shape and filled. After the product is added to the container, the film 100 can be attached completely around the inner surface of the container. During the attachment of the film, the top end of the body can be rolled, curled, or shaped to maintain the film within the container.

[0082] In some embodiments, membrane 100 can be applied and used with other types of containers. Figures 14A-14D show an exemplary container 500 defining at least one cavity 511 having a flange 533 surrounding the cavity 511. In some embodiments, membrane 100 can be adhered to flange 533 with a permanent adhesive. In some embodiments, body 507 can define cavity 511, and in some embodiments, body 507 can define multiple cavities 511.

[0083] In some embodiments, the first layer 110 may be provided as a paper web and the web of membrane may be formed by forming the first lines of weakness 112, folds and pull tabs 114 in the first layer 110. The second layer 120 may be formed as individual components and adhered to the first layer 110, or in alternative embodiments, the second layer 120 may be formed as a web and adhered to the first layer 110. After formation of the web of membrane 100', the web 100' may be adhered to the flange 533 of the body 507.

[0084] In some embodiments, the web of membrane 100' can be formed to correspond to the number of cavities 511 in the body 507 of the container 500. The web of membrane 100' can be formed with the same layers and cuts as the membrane 100 described with respect to Figures 1A-1B. In some embodiments, as shown in Figure 13A, the body 507 can define two cavities 511 and can have a web of membrane 100' that defines two closure systems (e.g., pull tab 114, flap 116, second layer 220).

[0085] 14B, in some embodiments, the body 507 can define two or more separate cavities 511. In some embodiments, the body 507 can be formed as a sheet of cavities 511 that are filled and sealed, where the cavities can be divided into individual containers by cutting along flanges 533.

[0086] In some embodiments, the container systems described herein are capable of containing and dispensing condiments, spices, bite-sized snacks, gum, candy, salt, sugar, powdered milk, infant formula, ground coffee, coffee beans, dietary supplements, dry sauce bases, dry tobacco, or any other similar products.

[0087] Many variations and other embodiments of the disclosure described herein will come to mind to one skilled in the art to which this disclosure pertains having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. It is to be understood, therefore, that the disclosure is not limited to the particular embodiments disclosed, and that variations and other embodiments are intended to be included within the scope of the appended claims. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims

1. 1. A membrane for use with a container, comprising: a first layer including a peripheral region, the peripheral region being defined by a first perimeter of the first layer and a first line of weakness formed inside the first perimeter, the first line of weakness defining a flap; a second layer including a peripheral zone defined by a second perimeter of the second layer and a second line of weakness formed inside the second perimeter, the second line of weakness defining a central portion; a first seal area, wherein at least a portion of the peripheral zone of the second layer is adhered to at least a portion of the peripheral zone of the first layer within the first seal area; A membrane comprising:

2. The membrane of claim 1 , wherein the first layer defines a first shape and the second layer defines a second shape, the first shape and the second shape being the same.

3. The membrane of claim 1 , wherein the first layer and the second layer are formed from one of paper or cardboard.

4. The membrane of claim 1 further comprising a hinge formed in the first line of weakness.

5. The membrane of claim 1 , wherein the seal area forms an air-tight seal between the first layer and the second layer.

6. The membrane of claim 1 , wherein the first seal area is provided between the perimeter of the first layer and the first line of weakness of the first layer.

7. The membrane of claim 1 , wherein the first seal area is provided between the second perimeter of the second layer and the first line of weakness.

8. 2. The membrane of claim 1, further comprising a second seal area, the second seal area being disposed between the second line of weakness of the second layer and the first line of weakness of the first layer.

9. The membrane of claim 8 , wherein the second seal area comprises a releasable adhesive.

10. The membrane of claim 8 , wherein the second seal area comprises a pressure sensitive adhesive.

11. The membrane of claim 8 , wherein the first seal area comprises a permanent adhesive.

12. The membrane of claim 8 , wherein the first seal area and the second seal area are formed with the same type of adhesive.

13. The membrane of claim 8 , wherein the first seal area and the second seal area are formed using different adhesives.

14. The membrane of claim 1 , wherein the flap of the first layer further comprises a pull tab.

15. 15. The membrane of claim 14, wherein the pull tab comprises a portion of the flap configured to be folded over and extend outwardly from a plane of the first layer.

16. The membrane of claim 1 , wherein the flap is resealable to the peripheral zone.

17. The membrane of claim 1 , wherein the second layer further comprises at least one opening disposed within the central portion.

18. The membrane of claim 17 , wherein the at least one aperture comprises a plurality of apertures.

19. 20. The membrane of claim 17, wherein the at least one aperture is a first aperture and a second aperture, the first aperture and the second aperture being different sizes.

20. a body defining an upper end and an inner wall; a lid configured to be received by the upper end of the body; and a membrane adhered to the body, the membrane comprising: a first layer including a peripheral region, the peripheral region being defined by a first perimeter of the first layer and a first line of weakness formed inside the first perimeter, the first line of weakness defining a flap; a second layer including a peripheral zone, the peripheral zone being defined by a second perimeter of the second layer and a second line of weakness formed inside the second perimeter, the second line of weakness defining a central portion, the central portion including an opening; a first seal area, wherein at least a portion of the peripheral zone of the second layer is adhered to at least a portion of the peripheral zone of the first layer within the first seal area; A membrane comprising: Including the package.

21. 21. The package of claim 20, wherein at least the first layer of the membrane is fitted within the inner wall.

22. 21. The package of claim 20, wherein the inner wall further comprises an inner liner, a sealant layer, or a coating.

23. 21. The package of claim 20, wherein the seal area forms an airtight seal between the first layer and the second layer.

24. 21. The package of claim 20, wherein the membrane is adhered to the inner wall of the body.

25. 21. The package of claim 20, wherein the membrane is adhered to a rim surrounding the top end of the body.

26. 21. The package of claim 20, wherein the lid is hinged to the body.

27. 21. The package of claim 20, wherein the lid is rotatably attached to the body.

28. 30. The package of claim 27, wherein the lid includes a port, the port being aligned with the opening in the second layer of the membrane when the lid is rotated.

29. a body defining an upper end; a membrane adhered to an inner surface of the body, the membrane comprising: a first layer including a peripheral region, the peripheral region being defined by a first perimeter of the first layer and a first line of weakness formed inside the first perimeter, the first line of weakness defining a flap; a second layer including a peripheral zone, the peripheral zone being defined by a second perimeter of the second layer and a second line of weakness formed inside the second perimeter, the second line of weakness defining a central portion, the central portion including an opening; a first seal area, wherein at least a portion of the peripheral zone of the second layer is adhered to at least a portion of the peripheral zone of the first layer within the first seal area; A membrane comprising: Including the package.

30. 30. The package of claim 29, wherein the top end of the body is folded inwardly toward a central axis of the body to form a rim.

31. 31. The package of claim 30, wherein the flap includes a pull tab configured to tuck under the rim of the body in a reclosed position of the flap.

32. 31. The package of claim 30, wherein the pull tab includes a through cut sized and configured to receive a finger for opening the flap.

Images