Method of making an oriented multilayer heat sealable packaging

Details Method of making an oriented multilayer heat sealable packaging Method of making an oriented multilayer heat sealable packaging

1984-02-03

1985-01-22

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

15624424, 428349, 428414, 428516, 428518, 428520, 428522, 428910, B29D 300

Patent

active

044950276

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: 4214039 (1980-07-01), Steiner et al.
patent: 4297415 (1981-10-01), Ward et al.
patent: 4367112 (1983-01-01), Park
patent: 4424256 (1984-01-01), Christensen et al.

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