Comparing the hairiness of Solospun and ring spun worsted yarns

This paper compares the hairiness of Solospun yarns with conventional ring spun worsted yarns of the same specifications. A 24-spindles worsted ring spinning frame is used to spin the Solospun and conventional ring spun yarns at the same time, and yarn hairiness is measured. The total hairiness number (T-p), the number of hairs longer than or equal to 3mm (S-3), the percentage of longer hairs in total hairs ( 100S(3)/T-p), and the total hair length per unit yarn length (K') are used to compare the hairiness of these yarns. The results indicate that the Solospun yarn exhibits less hairiness in each of the hair length groups and has lower variations in yarn hairiness. The hair-length distribution of the Solospun yarn follows an exponential law just like conventional ring spun yams. There is a statistically significant difference between the Solospun and conventional ring spun yarns for T-p, S-3, and K', but the difference in 100S(3)/T-p is not statistically significant for these yarns. In addition, the T-p, S-3, and K' values of the Solospun yarn decrease with twist increase and increase with spindle speed increase, but the 100S(3)/T-p values of the Solospun and conventional ring spun yarns in this study behave differently in that they are affected by twist level and spindle speed.