Source: Textile Review

The demands on quality of yarn, fabric and garments are ever increasing to higher levels year after year. Due to continuous improvement in the yarn winding technology the slight variation in yarn quality reflects badly on the fabric and ruins its quality, which further reduces its price in domestic and international market. Therefore, it is necessary to produce the yarn of best quality, which is the basic raw material for woven and knitted fabrics.

The conversion of small ring cops to continuous length of several lakh meters of yarn of Automatic Cone Winding includes removal of objectionable yarn faults and many other kinds of faults like thick and thin places, slubs, crackers, spinners double, bad piecing, snarls, coloured fibres, seed coats & other contamination. If these defects are not removed, it can result into:

  1. Poor fabric appearance, and
  2. Breakage of yarn at every subsequent process i.e. warping to weaving.

The breakages in the subsequent processing like warping, sizing and weaving would result in:

  1. Defective packages at warping and sizing.
  2. Lowering of efficiency at all stages.
  3. Introducing the fabric faults at weaving.

The loss of efficiency at every stage means increased cost of production and fault generation in weaving severely affects the fabric quality.

Thus, during clearing and winding the yarn on cross wound packages for warping, weaving or knitting it has been practically experienced by industry that there is deterioration of certain yarn characteristics like strength, elongation, hairiness etc. The imperfections also change. The process parameters thus have substantial influence on the final properties of the yarn.

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Originally published in Textile Review, Feb-2011.

The author is a Research Scholar with DKTE'S Textile & Engg. Institute, Ichalkaranji