Multi-layer film having self-limiting heat seal, and methods rel

Details Multi-layer film having self-limiting heat seal, and methods rel Multi-layer film having self-limiting heat seal, and methods rel

1994-08-24

1995-12-26

Davis, Jenna L.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

428349, 428483, C09J 700

Patent

active

054786452

ABSTRACT:
The present invention relates generally to a multilayer packaging structure which: 1. has a relatively broad heat seal temperature, and 2. provides an easy open seal, even at very high heat seal temperatures. More specifically, the films of the present invention are preferably multilayer structures comprising: 1. a support film, such as a polyester; 2. an olefinic homopolymer or copolymer interface layer; and 3. a heat seal outer layer.

REFERENCES:
patent: 3960636 (1976-06-01), Moffitt
patent: 4139643 (1979-02-01), Hix et al.
patent: 4211825 (1980-07-01), Shipman
patent: 4410600 (1983-10-01), McGrail
patent: 4521467 (1985-06-01), Berger
patent: 4571363 (1986-02-01), Culbertson et al.

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