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

1981-10-27

Herbert, Jr., Thomas J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

428349, 428354, 428355, 428516, 428517, 428519, 428913, C09J 702, B32B 2708

Patent

active

042974119

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

REFERENCES:
patent: 4125662 (1978-11-01), Weiner et al.
patent: 4186240 (1980-01-01), Matsuda et al.

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