Abstract:

In order to better understand the mechanical properties of yarn for warp knitting, yarn tensions during warp knitting and rupture work of yarn were studied. The idea of yarn rupture work to evaluate the warp knitting performance was suggested. The 14. 58 tex cotton yarn, 9. 72 tex compact siro-spun cotton yarn and 8. 33 tex (72 f) polyester filament were selected, and the yarn tension and mechanical performance were tested. Tensile properties of these yarns were transformed by angle domain, and tension work of each knitting cycle was calculated. Combining with the analysis of the yarn rupture work, it is found that the cotton yarn tension is close to the rupture work, while the polyester tension is far less than the rupture work. The greater the difference between yarn tension and yarn fracture work, the stronger the yarn warp knitting adaptability

Key words: warp knitting, yarn, rupture work, dynamic tension, knitting performance