Expanded porous thermoplastic polymer membranes and method...

Details Expanded porous thermoplastic polymer membranes and method... Expanded porous thermoplastic polymer membranes and method...

2005-06-07

2005-06-07

Seidleck, James J. (Department: 1711)

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

C264S046100, C264S050000, C521S079000, C521S145000, C521S910000, C521S917000

Reexamination Certificate

active

06902693

ABSTRACT:
Open celled membranes from thermoplastic polymers are prepared from foamed polymer melts by extrusion through a die.

REFERENCES:
patent: 5149579 (1992-09-01), Park et al.
patent: 5340844 (1994-08-01), Welsh et al.
patent: 5567742 (1996-10-01), Park
patent: 5847012 (1998-12-01), Shalaby et al.
patent: 5912279 (1999-06-01), Hammel et al.
patent: 19803362 (1999-08-01), None

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