Validity of adjusting density of material fiber mass in twist draft spinning frame

摘要

In order to add higher value to spun yarns, we have studied the application of a twist draft spinning to multi -kind small-lot production of functional yarns. In twist draft spinning, a yarn is spun out directly from a large mass of material fiber and the yarn count is controlled by spun yarn tension. In this paper, we specially have regard to the linear de n-sity and twist rate of the yarn those are deeply concerned with quality of the yarn. Through an analysis of the yarn properties, it is found that the density of material fiber mass is the most effective parameter in properties of material fiber to adjust twist factor of the yarn. Furthermore, the linear density and the twist factor of the yarn can be controlled independently by using spun yarn tension and density of material fiber mass as adjusting parameters.