The Minimizing the Hairiness of Polyester Cotton Blended Ring Spun Yarn by Increased Drawframe Passages, Modified Yarn Path and Twist Level: The Case of Kombolcha Textile Share Company

Abstract

Hairiness is a critical quality parameter of spun yarns that affects their
weaving and knitting performance and the quality of resultant fabrics. There
has been a significant interest in minimizing hairiness to improve both yarn
and fabric quality. Parameters in ring spinning and the number of draw frame
passages influence the hairiness of ring spun yarn. In this work, process
parameters on the ring spinning machine and the number of draw frame
passages for processing 27 Nm of 60:40 polyester cotton blended yarn were
modified and their effect on hairiness was studied. The hairiness index (H)
was measured by Uster Tester 5. The existing company parameters of 620
twists per meter (TPM), normal yarn path, 125mg traveller weight and two
draw frame passages gave a hairiness index of 6.6. The hairiness showed a
reduction by 15% with an index of 5.6 for three draw frame passages and 660
TPM, with the existing normal yarn path and 125mg traveller weight. The left
diagonal yarn path gave a reduction of 13% in hairiness for the existing
parameters of two draw frame passages, 620 TPM and 125mg traveller. The
effect of a twist level of 660 TPM gave a reduction of about 12% in hairiness
with the existing two draw frame passages, normal yarn path and a traveller
weight of 125mg. No significant change in hairiness was seen with a right
diagonal yarn path and with a higher twist level of 700 TPM for the existing
parameters. Yarn strength and evenness remained unaffected for the
parameters which resulted in hairiness reduction.