Laminate having a coextruded, multilayer film which...

B - Operations – Transporting – 32 – B

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

B32B 7/06 (2006.01) B32B 27/08 (2006.01) B65D 77/20 (2006.01) B65D 81/20 (2006.01)

Patent

CA 2272646

A laminate comprising two or more films (26, 28), at least one of the films being a coextended, multilayer film (26), wherein the laminate delaminates within the coextruded, multilayer film (26) when the laminate is subjected to a peel force ranging from 0.001 to 2.5 pounds per inch. The laminate adavantageously provides the lid (24) for a package and delaminates into a substantially gas-impermeable portion and a gas-permeable portion, with the gas-permeable portion being bonded directly to a product support member (12) of the package. In this manner, the gas-impermeable portion may be peelably removed from the package to allow atmospheric oxygen to enter the interior of the package. The gas-permeable portion may be provided by perforating the delaminatable, coextended film (26) and bonding such film to the support member (12) so that, when the laminate is caused to be delaminated within the perforated, coextruded film (26), the perforations are exposed to the ambient atmosphere, and thereby allow for rapid ingress of oxygen into the interior of the package.

Cette invention se rapporte à un stratifié comportant aux moins deux films (26, 28), l'un au moins de ces films étant un film multicouche, coextrudé (26), les couches dudit stratifié se décollant au sein du film multicouche, coextrudé (26), lorsque ce stratifié est soumis à une force d'arrachage d'intensité comprise entre 0,001 et 2,5 livres par pouce. Ce stratifié, qui peut avantageusement servir de couvercle (24) d'emballage, se sépare en une partie sensiblement imperméable aux gaz et en une partie perméable aux gaz, ladite partie perméable aux gaz étant collée directement à un élément (12) de l'emballage, conçu pour le support d'un produit. De cette manière, on peut retirer la partie imperméable aux gaz de l'emballage par arrachage pour permettre la pénétration d'oxygène atmosphérique à l'intérieur de l'emballage. On peut former la partie perméable aux gaz en perforant le film coextrudé (26) dont les couches sont susceptibles de se décoller et en collant ce film audit élément de support de sorte que, lorsque le décollement des couches du stratifié se produit au sein du film coextrudé (26) et perforé, les perforations sont exposées à l'atmosphère ambiante, ce qui permet à l'oxygène de pénétrer rapidement à l'intérieur de l'emballage.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Laminate having a coextruded, multilayer film which... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Laminate having a coextruded, multilayer film which..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laminate having a coextruded, multilayer film which... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1389698

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.