Heat shrinkable multilayer packaging film of blended copolymers and elastomers

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4196240
SERIAL NO

05870598

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A heat-shrinkable multilayer film suitable for use in the packaging of a frozen poultry, includes a first outer layer comprising a blend of propylene-ethylene copolymer having a high isotactic molecular structure with less than about 6% by weight being 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 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, and a second outer layer comprising an ethylene-(butene-1) copolymer having a melt flow of from about 0.1 to about 1.0 decigram per minute, having a density of from about 0.916 to about 0.920 gram per cubic centimeter, and being a linear polymer; the multilayer film being biaxially oriented.

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Patent Owner(s)

  • UNION CARBIDE CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kohler, William J Westmont, IL 3 103
Lustig, Stanley Park Forest, IL 38 1036
Vicik, Stephen J Darien, IL 41 1178

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