Factors effecting changes in the structure and properties of open-end rotor yarns

Abstract

The effect of certain doffing tube parameters on yam and knitted fabric properties were studied. The surface appearance of yarns made from various doffing tube types was examined microscopically, and the differing surface structures classified. Changes in the doffing tube effected changes in the frequency of certain classes of wrapped structure and in a number of the measured parameters defining the handle of the knitted fabrics. It was found that the smooth doffing tubes gave the lowest frequency of wrapper fibres, and resulted in the best measured values for the softness of hand of a single jersey knitted fabric.