THE TECHNOLOGY OF THE PRODUCTION OF FALSE-TWIST TEXTURED YARNS

Abstract

Experimental work in the production of false-twist textured yarns using a versatile apparatus is described. Measurements of tension are made at various stages of the process on two systems using different methods of feeding the yarn. The distribution of twist throughout the set-up is discussed. Some measurements of tension are also made on yarns given a simple thermal treatment only. Yarns have been made at a wide range of tensions, twists, and temperatures and are compared in terms of their visual appearance, breaking load and breaking extension, residual shrinkage, stretch, recovery behaviour, specific volume and change in denier on processing.