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

1979-10-05

1981-09-22

Lesmes, George F.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

428500, 428516, 428523, 428515, 525240, B32B 2708, B32B 2732

Patent

active

042910927

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 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.

REFERENCES:
patent: T955009 (1977-02-01), Lansbury
patent: 3733373 (1973-05-01), McConnell et al.
patent: 3888949 (1975-06-01), Shih
patent: 4125662 (1978-11-01), Weine

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