Method of manufacturing foamed polyethylene films and...

Details Method of manufacturing foamed polyethylene films and... Method of manufacturing foamed polyethylene films and...

2008-03-11

2008-03-11

Kuhns, Allan R. (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By gas forming or expanding

C264S051000

Reexamination Certificate

active

10349803

ABSTRACT:
The present invention solves the problems left unaddressed by the prior known processes by providing a method to produce foamed-thermoplastic films of sufficient strength for use in consumer trash-bag applications utilizing high strength thermoplastic resins. Most broadly, the present invention comprises a blown-film bag formed from a material comprising a matrix of foamed polyolefin-based film and gaseous cells formed from a foaming agent.

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patent: 6593005 (2003-07-01), Tau et al.
patent: 6652933 (2003-11-01), Hall

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