Journal
JOURNAL OF THE TEXTILE INSTITUTE
Volume 97, Issue 5, Pages 377-384Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1533/joti.2006.0104
Keywords
analysis of variance; air-jet yarn; card draft; draft/doublings; fibre migration; regression model; ring yarn; rotor yarn; Taguchi method
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The migration in ring yarn (type I and type II), rotor yarn and air-jet yarn was studied in terms of three parameters - mean fibre position (MFP), mean migration intensity (MMI) and root mean square deviation (R-MSD) - using classical tracer fibre technique. The effect of various process variables on migration parameters was analysed using the Taguchi method, analysis of variance and a regression model. The trends of migration parameters in ring yarn-type I are opposite to those of ring yarn-type II. The ring yarn has the highest MFP and the lowest MMI. The rotor yarn has the lowest MFP and RMSD. The air-jet yarn has the highest MMI and RMSD. Increase in card draft increases the MMI and RMSD of rotor yarn and decreases the MMI of air-jet yarn. However, it tends to increase the PMSD of ring yarn-type II, rotor yarn and air-jet yarn. A high draft/doublings at draw frame increases MFP in ring yarn-type II, rotor yarn and air-jet yarn. A decrease in ring frame/air-jet draft or an increase in speed frame draft decreases MFP in these yarns. All the migration parameters follow almost the same trends with change in process variables in rotor yarns.
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