Method for producing textured filament yarns with improved yarn qualities from preorientated polyamide 6

US4103480A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Wolfgang Rellensmann
• Michael Bueb · Leverkusen, DE
• Lothar Rupprecht · Dormagen, DE
• Herbert Schmidt · Friedberg, DE
• Wolfram Wagner · Dormagen, DE

Key dates

• Filing date: Mar 10, 1977
• Grant date: Aug 1, 1978
• Expiry date: Mar 10, 1997

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D02G1/0286
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

The invention is related to a method for producing texturized yarns from polyamide 6 which have small parts of a transitional structure in the .alpha.-modification in addition to the predominant .alpha.-modification, using a rapidly spun yarn in the .alpha.-modification, wherein a yarn with an elongation of 40 to 100% and a density of 1.130 to 1.140 is texturized at texturizing speeds of from 4000 to 1600 m/min at a temperature of from 170.degree. to 220.degree. C while maintaining a constant thread tension ratio of twister outlet to twister inlet of from 1 : 1.0 to 1 : 1.5 by means of a frictional twister while simultaneously stretching in a ratio of from 1 : 1.05 to 1 : 1.5.