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Title: Response to doubling of MJS yarns produced with varying nozzle pressure
Authors: Punj, S K
Mukhopadhyay, A
Maiti, T K
Keywords: Abrasion resistance;Breaking elongation;Doubling;Flexural rigidity;Hairiness;Imperfections;MJS yarn;Nozzle pressure;Polyester-viscose yarn;Tenacity;Unevenness
Issue Date: Mar-1997
Publisher: NISCAIR-CSIR, India
Abstract: The effects of nozzle pressure and doubling twist on the properties of polyester-viscose two-fold MJS yarn have been investigated and the properties of two-fold MJS yarn have been compared with those of ring-spun yarn. Tensile properties, abrasion resistance, S3 value, unevenness and imperfections improve after doubling in MJS yarn and the extent of improvement is greater than that in ring-spun yarn. Again, after doubling, increase in flexural rigidity is less than that in ring-spun yarn. Tenacity, breaking elongation and abrasion resistance show optimum values at a particular level of doubling twist, whereas flexural rigidity, hairiness index and S3 value gradually decrease with the increasing doubling twist. The above parameters are also affected by the characteristics of single yarn produced with different nozzle pressure combinations. Two-fold MJS yarn (with 4.1 tpcm) which are made from single yarns produced under nozzle pressure combination of 2.5 kg cm-2 (N1)/3.5 kg cm-2 (N2) appears to be most suitable for weaving.
Page(s): 1-7
ISSN: 0975-1025 (Online); 0971-0426 (Print)
Appears in Collections:IJFTR Vol.22(1) [March 1997]

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