Factors Affecting Defects in 1 X 1 Rib Knitted Fabrics due to Knots of Spun Yarns

Abstract

The effects of some factors on the defects in 1 X 1 rib knitting due to knots are investigated experimentally, using a cotton yarn (c30s/1) and a worsted yarn (2/72s).The results obtained are as follow : (1) The knitting defect due to the knots is almost the knitting hole caused by end breakages in 1 X 1 rib knitting zone. The end breakage occurs near the knot on the take-down side.(2) The end breakage rate increses together with the increase of the depth of stitch draw, the input tension, the take-down weight and the step length of cam. But the increase of the cam angle decreases the end breakage rate.