Heat sealable packaging film comprising propylene polymer substrate and a surface layer blend of ethylene copolymer and propylene copolymer
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United States of America Patent
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Jul 20, 1982
Issued Date -
N/A
app pub date -
Nov 3, 1980
filing date -
Oct 5, 1979
priority date (Note) -
Expired
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Abstract
Multiple layer, heat sealable films are described comprising a substrate layer of polypropylene homopolymers or copolymers, or blends thereof with compatible polyolefins, and at least one heat sealable surface layer of a blend of a copolymer of ethylene and a higher olefin, and a copolymer of propylene and a higher olefin. The films are prepared by extrusion coating or coextrusion and can be oriented.
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