Process for preparing porous film or sheet

Details Process for preparing porous film or sheet Process for preparing porous film or sheet

1986-12-24

1988-12-27

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

264154, 2642888, 2642902, 521134, 525240, B29C 6720, B29C 5502

Patent

active

047939567

ABSTRACT:
A process for preparing a porous film or sheet, which process comprises melt-forming a composition into a film or sheet and then stretching the thus-formed film or sheet at a temperature in the range of 30.degree. to 110.degree. C., said composition containing:

REFERENCES:
patent: 4472328 (1984-09-01), Sugimoto et al.

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