Self-supporting sheet-like structure comprising a substrate and a coating, and a process for its production

US5186974A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• John D. Gribbin · Schlangenbad, DE
• Lothar Bothe · Mainz, DE
• Peter Dinter · Obermoschel, DE
• Hermann Dallmann · Wiesbaden, DE

Key dates

• Filing date: Oct 5, 1990
• Grant date: Feb 16, 1993
• Expiry date: Oct 5, 2010

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01T19/00
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A self-supporting sheet-like structure comprises a coating, which reduces sliding friction, on at least one surface of the substrate. The slip-improving coating is produced by treating this substrate surface by means of an electric corona discharge between a high voltage electrode and a grounded counter-electrode while simultaneously spraying an aerosol into the corona discharge zone. The aerosol contains a film-forming agent as a slip agent, for example aqueous solutions or emulsions of monoesters of glycerol and long-chain fatty acids.