Food or edible material: processes – compositions – and products – Packaged or wrapped product – Three or more layered packaging materials
Patent
1991-12-04
1992-12-01
Weinstein, Steven
Food or edible material: processes, compositions, and products
Packaged or wrapped product
Three or more layered packaging materials
426106, 426129, 426126, 426396, 426415, 206466, 2291231, 22912535, 156152, 156327, B65B 3102, B65D 8120, B65D 1700
Patent
active
051679744
ABSTRACT:
A package is provided for enclosing a proteinaceous product under vacuumized and hermetically sealed conditions. The package has a peelable hermetic reclosure and a body member of semi-rigid preformed plastic with a first planar marginal portion and a central portion shaped to provide a packaging chamber. The package also has a flexible dimensionally stable base member having a corresponding second planar marginal portion and a central portion to provide a closure for said packaging chamber. The two planar marginal portions are adhered together face-to-face by an adhesive to provide at least a portion of the hermetic seal wherein said adhesive is a high molecular weight pressure sensitive hot-melt adhesive having a viscosity of between about 5,000 and about 100,000 centipoise at 300.degree. F. and said adhesive provides a peelable hermetic reclosure. Curling and wrinkling of the flexible base member are precluded by utilizing a flexible base member that is a film component, preferably a polyolefin film component, which has a coefficient of thermal expansion that is equal to or greater than that of the semi-rigid preformed plastic body member.
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Cornish Darrell G.
Griesbach Ray H.
Grindrod Paul E.
Oscar Mayer Foods Corporation
Weinstein Steven
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