Draw process

US5664307A · kind A · utility

Assignee

• Barmag AG · DE

Inventors

• Albert Stitz · Lingen (Ems), DE
• Hans-Peter Berger · Wermelskirchen, DE
• Ulrich Enders · Remscheid, DE

Key dates

• Filing date: Jul 31, 1995
• Grant date: Sep 9, 1997
• Expiry date: Jul 31, 2015

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D02J1/227
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A draw process is described, in which yarns in particular of thermoplastic plastics are drawn by influencing their temperature, so as to improve the yarn properties. The process can be employed in a spin process or in a subsequent improvement step. In accordance with the invention, the temperature of the temperature modulating device is controlled as a function of a yarn tension signal, which is obtained within or downstream of the draw zone.