Process and apparatus for resin-coating of extrusions

US5079033A · kind A · utility

Assignees

• Technics Plasma GmbH · DE
• KraussMaffei GmbH · DE

Inventors

• Stefan Schulz · Berlin, DE
• Berthold H. Kegel · Tauberbischofsheim, DE
• Wolfgang Mohl · Worms, DE

Key dates

• Filing date: Dec 19, 1989
• Grant date: Jan 7, 1992
• Expiry date: Dec 19, 2009

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2219/1227
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

An extrusion is coated with a resin by passing the extrusion continuously through a belt-shaped plasma formed by means of a stationary annular electron cyclotron resonance magnet which completely surrounds the extrusion. The resin coating is produced by plasma polymerization of a monomer using microwaves having a frequency of 2.45 GHz.