Influence of moisture content and linear density of feed sliver on running performance and yarn quality during rotor spinning of dyed cotton

Abstract

The effects of moisture content and linear density of feed sliver on rotor spinning performance and yarn quality of grey and dyed cotton have been studied. It is observed that the high moisture content in the feed sliver decreases the end breakage rate of grey cotton, but for dyed cotton the running performance deteriorates with the increase in moisture content. With the increase in the linear density of feed sliver, the end-breakage rate increases for both grey and dyed cotton. The yarn quality in terms of CSP, irregularity and imperfections, in general, deteriorates with the increase in moisture content and linear density of feed sliver for both grey and dyed cotton. The cotton dyed with natural indigo shows poor running performance and yarn quality in comparison to grey and reactive black dyed cotton. For all the samples, a heavier sliver with high level of moisture content produces poor quality of yarn.