Sandwich foam coextrusion for high performance polyolefin trash

Details Sandwich foam coextrusion for high performance polyolefin trash Sandwich foam coextrusion for high performance polyolefin trash

1983-08-30

1985-08-06

Van Balen, William J.

Stock material or miscellaneous articles

Hollow or container type article

Cellular material derived from plant or animal source

383109, 383110, 383119, 428121, 428194, 428216, 4283199, B32B 102, B32B 108, B32B 2706, B32B 2732

Patent

active

045335788

ABSTRACT:
There is provided a 3-ply trash bag prepared by a sandwich foam, blown film coextrusion process. The skin layers are composed essentially of high performance polyolefins such as linear low density polyethylene. The foamed middle layer imparts to the bag improved structural integrity and stiffness, an independent tear mechanism for the skin layers, and improved TD tear strength.

REFERENCES:
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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