关键词: 粘胶, 预并, 并合根数, 纱疵, 棉结

Abstract: This article discusses the spinning process and yarn performance of polyester (T) 65/viscose (R) 35 18.5tex blended yarns produced by oversea Lenzing and domestic Yamei. We first determined the spinning process configuration of each process according to the performance characteristics of viscose and polyester fiber and then optimized the domestic viscose spinning process by respectively removing the polyester pre-drawing process and and reducing the number of cotton slivers during mixed drawing process. Then we compared and analyzed the yarn quality of the two branded blended yarns. The results show that they are similar in terms of single yarn strength, hairiness and evenness indexes. Although the common quality defects of the domestic Yamei viscose rose slightly after the optimization, the A1 and other incidental yarn defects declined considerably. On the whole, the domestic Yamei viscose fiber blended yarns are slightly inferior to that of oversea Lenzing, but its yarn quality can be improved by optimizing the spinning process. Moreover, the domestic viscose price is low, and it is rarely out of stock, which has a positive effect on reducing costs and improving the production and development of products.

Key words: viscose, pre-drawing, blending number, yarn defect, nep