Effect of single yarn twist, ply-to-singles twist ratio and tightness factor on spirality of single jersey cotton knitted fabrics

摘要

The effect of single yarn twist, ply-to-singles twist ratio and tightness factor on spirality of single jersey cotton knitted fabrics has been studied. The results show that the single jersey fabrics knitted from two-ply yarn with 1/2 of single yarn twist do not show spirality, whereas the fabrics produced using two-ply yarn with 1/3 and 3/4 of single yarn twist show spirality in Z and S directions respectively and the magnitude of spirality increases on wet relaxation. As the cotton two-ply yarn with 1/2 of single twist does not snarl in water, it can be considered as a balanced two-ply yarn. As the tightness of the fabric construction increases, the spirality of the fabric decreases.