Microporous membrane filter and method of producing same

US4872888A · kind A · utility

Assignee

• Kernforschungszentrum Karlsruhe GmbH · DE

Inventors

• Wolfgang Ehrfeld · Karlsruhe, DE
• Peter Hagmann · Erlenbach a.Main, DE
• Jurgen Mohr · Eppingen, DE
• Dietrich Munchmeyer · Blankenloch, DE

Key dates

• Filing date: Feb 11, 1988
• Grant date: Oct 10, 1989
• Expiry date: Feb 11, 2008

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S264/48
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for producing a filter including a microporous membrane and a supporting structure connected thereto, including producing a mold for the membrane and the supporting structure, filling the mold with a molding material whose solubility can be changed by high energy radiation, and forming the micropores by partial irradiation of the membrane with high energy radiation and removal of the regions having increased solubility. The filter produced according to the above method is a unitary structure with the supporting structure integrally connected to the membrane.