Tension of Viscose and Nylon Yarns While Running:Part 4 : Effect of External Disturbance

概要

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Yarn tension in the weaving and knitting processes is considered a random variable of the stochastic process induced by the action of various external disturbances.<BR>The purpose of this report is to investigate the effect of external disturbances which affect the tension of a running yarn and to find a way to prevent fluctuations in tension.<BR>1) The irregularity of tension in the preparatory process much affects the mean tension of a running yarn, but has a lesser effect on the amplitude of tension. An increase in yarn tension in the weaving and knitting processes is proportional to the amount of tension in the preparatory process.<BR>An increase in tension induced by the stoppage of a let-off motion declines when the let-off motion is resumed. The process of a decrease in tension is represented by an exponential fashion as H exp (-t/λ), where H and λ are constant.<BR>3) Both the fluctuations in the amplitude of yarn tension induced by the irregularity of winding tension in the preparatory process and variations in tension owing to irregularity generated by the difference between the let-off length and the take-up length of a yarn are reduced by a tension spring.
社団法人日本繊維機械学会の論文