Process for coating a base material with an elastomer and produc

Details Process for coating a base material with an elastomer and produc Process for coating a base material with an elastomer and produc

1985-03-27

1988-12-27

Cannon, James C.

Stock material or miscellaneous articles

Sheet including cover or casing

1563077, 427302, 4273935, 427404, 4274071, 427411, 427412, 428207, 428208, 428218, 428290, 428457, 428461, 428492, 428493, 428507, 428511, 428521, F16L 1104

Patent

active

047940271

ABSTRACT:
A process is provided herein for coating a preformed, porous base material comprising a mineral fibrous or particle material or an organic fibrous or particle material or mixtures thereof to provide a novel preformed base material. The process comprises applying at atmospheric pressure a coating of a vulcanizable elastomeric material in unvulcanized form to a surface of such preformed, porous base material. The elastomeric material is permanently adhered to the preformed porous base material by a hot press, hot vulcanization step. In this way the elastomeric material is substantially simultaneously both adhered securely to one outer surface of the base material and is penetrated and impregnated below and into the same surface of the base material to be within the porous structure of the base material, and is vulcanized therein in situ by the joint action of a pressure of about 50 to about 500 Newton/cm.sup.2 at a temperature of about 120.degree. C. to about 300.degree. C.

REFERENCES:
patent: 4149921 (1979-04-01), Stannard
patent: 4215171 (1980-06-01), Marco et al.
patent: 4218779 (1980-08-01), Hart et al.
patent: 4562103 (1985-12-01), Hering
patent: 4567087 (1986-01-01), Gey et al.
patent: 4604155 (1986-08-01), McKiernan
"Kautschuk & Gummi Kunstoffe", vol. 33, No. 2, 1980, pp. 95-100.

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