Method and article for the production of porous fiber bats

US4761323A · kind A · utility

Assignee

• MAN Technologie AG · DE

Inventors

• August Muhlratzer · Gilching, DE
• Siegfried Lassmann · Gröbenzell, DE
• Roland Bertinger · Munich, DE
• Herbert Gutwein · Pasenbach, DE
• Renate Sanden · Hebertshausen, DE

Key dates

• Filing date: Oct 10, 1986
• Grant date: Aug 2, 1988
• Expiry date: Oct 10, 2006

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T442/50
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A method for the production of soot filters using felt-like or other bats as filter elements, which are made up of loose refractory fibers. In order to bond the fibers together and to anchor then in place, the filter element made up of the fibers is coated by CVD or precipitation from a solution to give an amorphous coating. The coating is also refractory. It bonds the fibers together at their crossovers.