Process of making fibers which give off troublesome gases and/or vapors during spinning

US5370833A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Herbert Wellenhofer · Bobingen, DE
• Gerhard Leumer · Bobingen, DE
• Andreas Fischer · Heppenheim, DE
• Diethelm Rabe · Berlin, DE
• Hans-Jurgen Profe · Frankfurt am Main, DE

Key dates

• Filing date: Jul 26, 1993
• Grant date: Dec 6, 1994
• Expiry date: Jul 26, 2013

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D01F6/765
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A process produces fibers from polymers which give off troublesome gases and/or vapors during spinning, comprising the steps of: PA0 a) extruding the molten polymer through a spinneret into a closed spinning shaft, PA0 b) quenching the resulting filaments in the spinning shaft with a gas, PA0 c) taking off the resulting filaments from the spinning shaft, PA0 d) conducting the quench gas away from the spinning shaft and introducing it into a gas purification system and PA0 e) purifying the used quench gas by contact with an adsorbent for said troublesome gases and/or vapors. It is possible by the present invention to keep hazardous gases occurring during the spinning of polymers away from the surroundings and to dispose of them. Suitable polymers are in particular polyphenylene sulfides.