Multiple-layer polyolefin films

Details Multiple-layer polyolefin films Multiple-layer polyolefin films

1984-05-22

1986-01-21

Buffalow, Edith

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

428516, 428520, 428522, 525 88, 525 95, B32B 2732

Patent

active

045657386

ABSTRACT:
A composite multiple-layer film, suitable as a packaging film, having a base layer of a propylene polymer and at least one surface layer formed from a blend of a propylene-ethylene block copolymer and an ethylene-higher olefin random copolymer. The composite film is preferably coextruded and is suitable as a substrate for additional polymeric layer(s), such as heat-sealable coatings, which may be adhered to the substrate by a polymeric primer resin.

REFERENCES:
patent: 4147827 (1979-04-01), Breidt et al.
patent: 4230767 (1980-10-01), Isaka et al.
patent: 4297411 (1981-10-01), Weiner
patent: 4393115 (1983-06-01), Yoshii et al.

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