Process for the production of air-permeable films

Details Process for the production of air-permeable films Process for the production of air-permeable films

1985-11-15

1987-11-03

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

264565, 264567, 2642107, 264211, 2642888, 2642902, 264DIG13, B29C 6720, B29C 5510, B29C 5512, B29C 5528

Patent

active

047042389

ABSTRACT:
A process for producing an air-permeable film is described, comprising stretching in at least one direction a film made of a composition comprising 42 to 87 vol % of a polyolefin resin and 58 to 13 vol % of an inorganic filler and further containing an aliphatic alcohol/fatty acid ester of a fatty acid having 10 to 22 carbon atoms and an aliphatic alcohol having 1 to 12 carbon atoms in an amount of 3 to 25 parts by weight per 100 parts by weight of the above composition.

REFERENCES:
patent: 3154461 (1964-10-01), Johnson
patent: 3539666 (1970-11-01), Schirmer
patent: 3679538 (1972-07-01), Druin et al.
patent: 3823210 (1974-07-01), Hikaru Shii et al.
patent: 3843761 (1974-10-01), Bierenbaum et al.
patent: 3862030 (1975-01-01), Goldberg
patent: 4472328 (1984-02-01), Sugimoto et al.
patent: 4585604 (1986-04-01), Okuyama et al.

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