Process for the production of air-permeable films
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United States of America Patent
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-
Nov 3, 1987
Grant Date -
N/A
app pub date -
Nov 15, 1985
filing date -
Nov 19, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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