Oriented multilayer heat sealable packaging film

Details Oriented multilayer heat sealable packaging film Oriented multilayer heat sealable packaging film

1982-03-08

1984-05-08

Ives, P.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

428414, 428516, 428518, 428910, 428520, 264176R, 229 87R, B32B 2700, C09J 702

Patent

active

044474946

ABSTRACT:
An oriented multilayer heat sealable film structure comprising a polyolefin film substrate, a layer of a random copolymer of ethylene and propylene, a primer layer on said copolymer layer and a layer of heat sealable vinylidene chloride polymer on said primer layer. The method of preparing said structure includes aging said structure at a temperature and for a time resulting in increased heat seal strength.

REFERENCES:
patent: 3620825 (1971-11-01), Lohmann
patent: 3671383 (1972-06-01), Sakata et al.
patent: 4058649 (1977-11-01), Steiner
patent: 4132050 (1979-01-01), Young
patent: 4198256 (1980-04-01), Andrews et al.
patent: 4214039 (1980-07-01), Steiner
patent: 4252851 (1981-02-01), Lansbury
patent: 4291090 (1981-09-01), Kenji et al.
patent: 4297415 (1981-10-01), Ward et al.

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