Stock material or miscellaneous articles – Structurally defined web or sheet – Including aperture
Patent
1999-01-26
2000-03-07
Park, Hankyel
Stock material or miscellaneous articles
Structurally defined web or sheet
Including aperture
426127, 426129, 426396, 428121, B32B 310, B32B 304, A21D 1002, B65B 5500
Patent
active
060337583
ABSTRACT:
A laminate comprising two or more films, at least one of the films being a coextruded, multilayer film, wherein the laminate delaminates within the coextruded, multilayer film when the laminate is subjected to a peel force ranging from 0.001 to 2.5 pounds per inch. The laminate advantageously provides the lid 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 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, coextruded film and bonding such film to the support member so that, when the laminate is caused to be delaminated within the perforated, coextruded film, the perforations are exposed to the ambient atmosphere and thereby allow for rapid ingress of oxygen into the interior of the package.
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Kocher Patrick N.
Mudar Kimberly Ann
Mueller Walter Berndt
Stockley H. Walker
Cryovac Inc.
Lagaly Thomas C.
Park Hankyel
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