Process for produce a readily slidable film

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...

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524413, 524423, 524427, 524432, 524496, 524497, 264167, 264170, 2641711, 5263472, C08L 2506

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054768993

ABSTRACT:
A process for the production readily slidable films which are stretched films. The process comprises (a) uniaxially stretching in a machine direction a pre-molded product comprising a composition of a styrene polymer having a high degree of syndiotactic configuration compounded with 0.001 to 1% by weight of inorganic filler particles with an average particle diameter of 0.01 to 3 .mu.m, or simultaneously, biaxially stretching the premolded product in the machine direction and the transverse direction and (b) subsequently uniaxially restretching the premolded product in the traverse direction or simultaneously, biaxially restretching the premolded product in the machine direction and the transverse to produce a film having a surface roughness Ra of 0.005 to 0.03 .mu.m, and a static friction coefficient .mu.s of 0.3 to 1.0. The readily slidable films have high heat resistance, mechanical strength and electrical insulating properties and are excellent in sliding properties and smoothness.

REFERENCES:
patent: 5034441 (1991-07-01), Nakano et al.
patent: 5109068 (1992-04-01), Yamasaki et al.
patent: 5171834 (1992-12-01), Funaki
Patent Abstracts of Japan, vol. 7, No. 199 (M-240) (1344) Sep. 3, 1983 of JP 58-098 222, Jun. 11, 1983.

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