Method of forming a multilayer heat sealable film

Details Method of forming a multilayer heat sealable film Method of forming a multilayer heat sealable film

1990-07-27

1991-11-19

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Recycling of reclaimed or purified process material

Of gaseous process material

264 41, 264129, 264171, 2642103, 2642902, 427209, 427302, 427386, 4273884, 4273935, B05D 704, B29C 3920, B29C 4706, B32B 3130

Patent

active

050664344

ABSTRACT:
A method for producing a heat sealable structure includes coextruding a substrate layer including a white opaque, cavitated polyolefin film with a second layer which includes a heat sealable ethylene propylene random copolymer, ethylene-propylene block copolymer or ethylene-propylene butene-1 terpolymer; biaxially orienting the coextrudate; treating to increase surface energy; applying a primer coating on the surface; and, applying a surface layer which includes vinylidene chloride copolymer.

REFERENCES:
patent: 4377616 (1983-03-01), Ashcraft et al.
patent: 4439493 (1984-03-01), Hein et al.
patent: 4447494 (1984-05-01), Wagner, Jr. et al.
patent: 4495027 (1985-01-01), Wagner, Jr. et al.
patent: 4564558 (1986-01-01), Touhsaent et al.
patent: 4565739 (1986-01-01), Clauson et al.
patent: 4681803 (1987-07-01), Liu

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