THE INFLUENCE OF THE INTENTIONAL TENSION DIFFERENCES DURING WEAVING AND PREPARATION TO THE DEFECTS OF RAYON FABRICS (II)
Abstract
The properties of the used yarns and the tension during preparation and weaving were previously reported. The current paper treats the defects appeared on our grey clothes. The defects are observed by naked eyes and S. U. M. P. method. Sectional views of the fabrics are also observed. The results are summerized as follows.(1) The length of the distance between the healds and the lease rods do not affect the charactor of our grey clothes so far as our expeirments are concerned.(2) The differences of the warp sizing tension appear sensitively as white warp wise stripes.(3) Tension difference in winding and warping do not appear as a defect on our grey clothes.(4) A weak warp tension in weaving is apt to make “Chika” defects, which do not disappear by a stronger weft tension.(5) Weft wise stripes due to the difference between the weft tensions are more apparent by stronger warp tension than by a weaker one.(6) The weft tension difference between the tip and the root of the cop can not be recognized as a defect, except when the weft tension is very strong.(7) Extremely strong and weak weft tension both make defects. The defects caused by the strong tension are tight picks, while the weak tension is apt to make very short weft piles on the fabrics.
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