Composite polyolefin films suitable for packaging

Details Composite polyolefin films suitable for packaging Composite polyolefin films suitable for packaging

1994-12-19

1996-03-19

Sluby, P. C.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

428516, 428517, 428910, B32B 712, B32B 2708

Patent

active

055002846

ABSTRACT:
Disclosed are composite films including:
A) a single- or multilayer bioriented film, where the single layer or at least one layer of the bioriented film is propylene crystalline homopolymer; and
B) a single- or multilayer cast film, wherein the single layer or at least one layer of said cast film is a layer of a composition including: I) propylene crystalline homopolymer, or a crystalline copolymer of propylene with ethylene and/or a C.sub.4 -C.sub.8 .alpha.-olefin; II) a copolymer fraction containing propylene and ethylene, insoluble in xylene at ambient temperature; III) a copolymer of ethylene with propylene and/or a C.sub.4 -C.sub.8 .alpha.-olefin and soluble in xylene at ambient temperature.

REFERENCES:
patent: 4894421 (1990-01-01), Kioka et al.
patent: 5286552 (1994-02-01), Lesca et al.
patent: 5286564 (1994-02-01), Cecchin et al.
patent: 5300365 (1994-04-01), Ogale
patent: 5302454 (1994-04-01), Cecchin et al.
patent: 5342695 (1994-08-01), Tsurutani et al.

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