Heat sealable, multi-ply polypropylene film

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor

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Details

15624411, 15624424, 156253, 264514, 525240, 428516, 428349, 428910, B32B 3116

Patent

active

043903851

ABSTRACT:
A heat sealable and shrinkable, coextruded, multi-layer packaging film having a propylene homopolymer base layer and a skin layer of a preferred blend of 60% to 80% propylene-ethylene copolymer with propylene homopolymer provides a sealing temperature range of up to 30.degree. C.

REFERENCES:
patent: 3220966 (1965-11-01), Flanagan
patent: 3285766 (1966-11-01), Barkis et al.
patent: 3671383 (1968-11-01), Sakata et al.
patent: 3983258 (1976-09-01), Weaver
patent: 4132050 (1979-01-01), Young
patent: 4148972 (1979-04-01), Yamane et al.

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