Stock material or miscellaneous articles – Structurally defined web or sheet – Including components having same physical characteristic in...
Patent
1979-08-27
1982-05-11
Dixon, Jr., William R.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including components having same physical characteristic in...
428516, 428517, 428520, 428 35, B65D 3304, B32B 2708
Patent
active
043293883
ABSTRACT:
A heat-shrinkable multilayer film suitable for use in the packaging of a frozen poultry, includes a first outer layer comprising a blend of a propylene-ethylene copolymer having a high isotactic molecular structure with less than about 6% by weight ethylene and having a melt flow of from about 1.5 to about 18 decigrams per minute; a (butene-1)-ethylene copolymer having a high isotactic molecular structure with less than about 10% by weight being ethylene and having a melt flow of from about 0.1 to about 5.0 decigrams per minute, and a thermoplastic elastomer selected from the group consisting of ethylene-propylene copolymers and ethylene-propylene diene terpolymers, the ratio by weight of the propylene-ethylene copolymer to the (butene-1)-ethylene copolymer being from about 2:1 to about 1:2 and the thermoplastic elastomer being present from about 10% to about 50% by weight; at least one core layer capable of being biaxially oriented and heat shrinkable and comprising an extrudable adhesive; and a second outer layer comprising a polymer selected from the group consisting of ethylene homopolymers and copolymers each having a highly branched molecular structure; the multilayer film being biaxially oriented.
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Funderburk, Jr. James O.
Kohler William J.
Vicik Stephen J.
Dixon Jr. William R.
Grandmaison Real J.
Humphreys Harrie M.
LeFever John C.
Union Carbide Corporation
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