Influence of Yarn Twist Coefficient on the Properties of Composite Yarn Based on Different Drafting Multiples

This paper has studied the influence of yarn twist coefficient on the properties of composite yarn based on different drafting multiples, and the put-pose is to further develop differential composite spinning technology. The experiments were undertaken on some selected evaluation indexes, including yarn's strength, breaking elongation, abrasion resistance, hairiness standard deviation, hairiness index, CV%, yarn evenness, neps and so on. Research results showed that the yarn twist coefficient have a great influence on yarn's strength, breaking elongation, abrasion resistance, hairiness standard deviation, hairiness index, CV%, but it was not obvious to the yarn evenness and cotton neps.