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Textile Research Journal
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Structure and Properties of Low Twist Short-staple Singles Ring Spun Yarns

Kun Yang

Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong

Xiao Ming Tao

Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, tctaoxm{at}inet.polyu.edu.hk

Bin Gang Xu

Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong

Jimmy Lam

Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong

Low twist singles ring yarns are desirable for their low residual torque, high bulk and softness, as well as high spinning productivity. However, conventional low twist ring yarns have very low strength and, thus, cannot be used. In this paper, a modification technique is described for producing singles ring yarns with a low twist and a relatively high strength simultaneously. A false twister was used to increase fiber migration and entanglement in the spinning triangle, leading to a reinforcement of yarn strength. The yarn cross sectional structure, fiber path and yarn surface were examined and yarn tensile and torsional properties were evaluated. The results revealed that the modified yarn had a structure and properties different from the conventional ring spun yarns. The fiber path modification was kept in the resultant yarn.

Key Words: low twist yarn • structure • properties

Textile Research Journal, Vol. 77, No. 9, 675-685 (2007)
DOI: 10.1177/0040517507080545
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