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

Lesmes, George F.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

428516, 525240, B32B 2700

Patent

active

043394957

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 et al.
patent: 4168361 (1979-09-01), Oda
patent: 4302504 (1981-11-01), Lansbury et al.

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