Resin compostion for porous film and film prepared therefrom

Details Resin compostion for porous film and film prepared therefrom Resin compostion for porous film and film prepared therefrom

1986-12-11

1987-10-13

Foelak, Morton

Textiles: manufacturing

252518, 264 41, 264156, 2642888, 264DIG73, 521 92, 521143, H01B 106

Patent

active

046997334

ABSTRACT:
A porous film having a good water vapor permeability is obtained with a high productivity by melting a resin composition comprising 100 parts by weight of a polyolefin resin and 50 to 500 parts by weight of barium sulfate having an electric conductivity of 250 .mu.S/cm or less in terms of the electric conductivity of a supernatant formed when the barium sulfate is added to water, and a particle size of 0.1 to 7 .mu.m, making the melt into a film and stretching the film to 2.5 to 14 times the original area at least in the uniaxial direction.

REFERENCES:
patent: 4347844 (1982-09-01), Ohki et al.

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