Impregnated, soft, flat gasket and manufacturing method

US4681800A · kind A · utility

Assignee

• Goetze GmbH · DE

Inventors

• Hans-Rainer Zerfass · Burscheid, DE
• Franz-Josef Giesen · Rommerskirchen, DE

Key dates

• Filing date: Jan 17, 1986
• Grant date: Jul 21, 1987
• Expiry date: Jan 17, 2006

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T442/699
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

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.