Heat sealable packaging film comprising propylene polymer substr

Details Heat sealable packaging film comprising propylene polymer substr Heat sealable packaging film comprising propylene polymer substr

1980-11-03

1982-07-13

McCamish, Marion

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

428500, 428515, 428516, 428523, 428 35, 525240, C09J 702

Patent

active

043394949

ABSTRACT:
Multiple-layer, heat-sealable films are described comprising a substrate layer of polypropylene homopolymer or copolymer, or blends thereof with compatible polyolefins; and at least one heat-sealable surface layer of a blend poly(1-butene), and a copolymer of ethylene or propylene and a higher olefin. The films are prepared by extrusion coating or coextrusion and can be oriented.

REFERENCES:
patent: T955009 (1977-02-01), Lansbury
patent: 3891008 (1975-06-01), D'Entremont
patent: 4075290 (1978-02-01), Denzel et al.

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