Biaxially stretched polyparaphenylene sulfide film and process f

Details Biaxially stretched polyparaphenylene sulfide film and process f Biaxially stretched polyparaphenylene sulfide film and process f

1987-04-03

1988-10-04

Lesmes, George F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

2642888, 2642902, 264348, 428156, 428409, 428419, 428910, 528388, B29D 722, B32B 2706, C08G 7514

Patent

active

047755717

ABSTRACT:
Disclosed herein are a biaxially stretched polyparaphenylene sulfide film having protuberances on the surface of the film in number of not less than 10.sup.2 /mm.sup.2 of the surface thereof, an average diameter of the bottom part of the protuberances being from 5 to 40 .mu.m and an average height of the protuberances being from 0.3 to 2 .mu.m, and process for producing the same.

REFERENCES:
patent: 4352847 (1982-10-01), Okiyama
patent: 4367511 (1983-01-01), Crass et al.
patent: 4407879 (1983-10-01), Smart
patent: 4426479 (1984-01-01), DeGuch et al.
patent: 4613654 (1986-09-01), Katto et al.
patent: 4629778 (1986-12-01), Sugie et al.
patent: 4665156 (1987-05-01), Reinking et al.

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