High performance three layer polyolefin film

Details High performance three layer polyolefin film High performance three layer polyolefin film

1985-05-23

1987-04-14

Van Balen, William J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

264 459, 264 54, 4283199, 428516, B32B 326, B32B 2708, B32B 2732, B29C 4700

Patent

active

046578110

ABSTRACT:
There is provided a three-ply plastic film prepared by a sandwich foam, blown film coextrusion process. The outer skin layers are composed of high performance polyolefins, such as linear low density polyethylene. The foamed middle layer imparts to the film improved structural integrity and stiffness, an independent tear mechanism for the skin layers, and improved TD tear strength.

REFERENCES:
patent: 3553070 (1971-01-01), Sparks
patent: 4049147 (1977-09-01), Stiles et al.
patent: 4107247 (1978-08-01), Dukess
patent: 4399173 (1983-08-01), Anthony et al.

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