Impregnated, soft, flat gasket and manufacturing method

Details Impregnated, soft, flat gasket and manufacturing method Impregnated, soft, flat gasket and manufacturing method

1986-01-17

1987-07-21

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

1562722, 1562728, 1562755, 277235B, 277DIG6, 428284, 428285, 428290, 428391, 428447, B32B 516

Patent

active

046818006

ABSTRACT:
An impregnated, soft, flat sealing gasket and a method of manufacturing same which includes the steps of impregnating a fiber mat with a liquid, cross-linkable silicone impregnating agent which includes a cross-linking agent which forms radicals under the influence of heat; heating the silicone-impregnated fiber mat to cause at least partial cross-linking of the silicone impregnating agent; and irradiating the impregnated fiber mat with high energy radiation to cause cross-linking of the silicone impregnating agent present therein, whereby the silicone impregnating agent present in surface regions of the flat sealing gasket is cross-linked to a greater degree than obtainable by thermal treatment alone.

REFERENCES:
patent: 4448840 (1984-05-01), Matsushita
patent: 4474857 (1984-10-01), Vaughn
patent: 4477514 (1984-10-01), Gee et al.
patent: 4530874 (1985-07-01), Hendry et al.

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