Abstract
This study investigated the effects of spinning conditions such as traveller, twist multiplier, front top roller pressure and hardness on the physical properties of 19.7 tex Polyester/Rayon (P/R) composite yarns. Results showed that a traveller of #1/0, twist multiplier of 2.8, front top roller pressure of 18 kgf and hardness of 70° are the optimum spinning conditions. This combination results in the best mixing of spreaded polyester filaments and drafting rayon fibers in the nip of the front rollers, arranging them in the best dispersion to form a P/R composite yarn with better quality and good blend uniformity. The results also showed that the 19.7‐tex composite yarn spun in this study is superior to the world 5 % for standards of uniformity and hairiness. This indicates that the quality of P/R composite yarn has been remarkably improved.
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