Polyolefin films

Details Polyolefin films Polyolefin films

1976-12-14

1979-01-02

Lesmes, George F.

Package making

Methods

Wrapping contents including cover forming

428515, 428516, 428518, 260897A, 260876B, B32B 2708, B32B 2732, C08L 2300, C08L 5300

Patent

active

041320506

ABSTRACT:
Heat sealable films exhibiting improved adhesion between a heat sealable layer and a film substrate wherein the substrate is formed from a blend of 87.5 to 60 parts of polypropylene and 12.5 to 40 parts of an ethylene-propylene block copolymer containing 0.5 to 40% by weight of ethylene, the blend containing from 0.2 to 5% by weight of ethylene.

REFERENCES:
patent: T941020 (1975-12-01), Young
patent: 3524795 (1970-08-01), Peterson
patent: 3527844 (1970-09-01), Hull et al.
patent: 3539439 (1970-10-01), Calderwood et al.
patent: 3620825 (1971-11-01), Lohmann et al.
patent: 3622375 (1971-11-01), Siebel et al.

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