Patent ID: 11905093
Assignee: BERRY PLASTICS CORPORATION
Field: Surface technology, coating (Chemistry)
Classification: CPC B | IPC B

Claim 16:
17. A package for use in high-pressure pasteurization, the package comprising
a container comprising a polyester material, the container including a bowl formed to include an interior product-storage region therein and a brim coupled to the bowl and formed to include a mouth arranged to open into the interior product-storage region and
a closure coupled to the brim of the container to close selectively the mouth, the closure including a multi-layer film including a skin layer, a core layer coupled to the skin layer and located between the skin layer and the container, and a seal layer arranged to extend between and interconnect the core layer and the brim of the container,
wherein the multi-layer film comprises a thermoplastic elastomer and is configured to bond temporarily to the brim of the container and peel away from the brim after a pasteurization process to expose the mouth without leaving any portion of the multi-layer film behind coupled to the brim in response to a user applying a peel force to the multi-layer film, and
wherein the seal layer comprises a copolyester thermoplastic elastomer and an ethylene acrylate copolymer,
wherein the seal layer and the container form a hermetic seal that survives the pasteurization process, and
wherein the peel force is about 1,500 /in to about 3,000 /in.