Production of new multi-core and multi-layered spun silk yarn

Abstract

In order to improve the strength and structure of spun silk yarn, a multi-core and multi-layered spun yarn made by using an experimental ring-spinning frame was produced. This new composite yarn was spun by combining two production methods-those for core spun yarn and multi-layered spun yarn. The mechanical properties and thickness variation of various multi-core and multi-layered spun silk yarns were investigated, and the effects of inserting multi-core into the multi-layered spun yarn were discussed. By comparison with the multi-layered spun yarn, it was found that as the number of core filaments increased, the fasciation of the staple fibers in the yarn became the greater.