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A Comparative Study of Hooks in the Yarns Produced by Different Spinning Technologies

Ghosh A., Das S., Mal P.

Autex Research Journal

2015

Vol. 15, no. 4

260--265

This article presents a comparative study of hooks’ characteristics of ring, rotor, air-jet and open-end friction spun yarns. Hook types and their extent, spinning in-coefficient and mean fibre extent in the yarns produced on different spinning technologies are investigated. The results show that the hook extents for open-end friction spun yarn are the highest followed by rotor, ring and air-jet spun yarns. Ring and air-jet spun yarns have higher percentage and extent of trailing hook as compared with leading hook, whereas, rotor and friction spun yarns show the reverse trend.

Study of effect of spinning process variables on the packing density of ring, rotor and air-jet yarns using the Taguchi method

Kumar A., Ishtiaque S. M., Salhotra K. R.

Autex Research Journal

2006

Vol. 6, no. 3

122--135

The effect of lap hank, card draft, draft/doublings and drafts at speed frame, ring frame, rotor and air-jet on packing density parameters were analysed using the Taguchi method. The trends of change in packing density with process variables are opposite to those of the yarn diameter and helix angle of the ring, rotor and air-jet yarns studied. The packing density is found to be the highest in air-jet yarn and the lowest in rotor yarn. An increase in draft in the air-jet and a decrease in the rotor spinner increases the packing density of the respective yarns.