Source: Textile Review
The demands on the quality of yarn, fabric, and garments are ever-increasing to higher levels year after year. Due to continuous improvement in yarn winding technology, slight variations in yarn quality reflect badly on the fabric, diminishing its quality and reducing its price in the domestic and international markets. Therefore, it is necessary to produce the best quality yarn, the basic raw material for woven and knitted fabrics.
The conversion of small ring cops to a continuous length of several lakh meters of yarn on Automatic Cone Winding includes the removal of objectionable yarn faults and various other defects such as thick and thin places, slubs, crackers, spinner's double, bad piecing, snarls, colored fibers, seed coats, and other contaminants. If these defects are not removed, it can result in:
- Poor fabric appearance, and
- Breakage of yarn at every subsequent process, i.e., warping to weaving.
Breakages in subsequent processing stages like warping, sizing, and weaving would result in:
- Defective packages at warping and sizing.
- Lowering of efficiency at all stages.
- Introducing fabric faults at weaving.
The loss of efficiency at every stage means increased production costs, and faults generated in weaving severely affect fabric quality.
Thus, during clearing and winding the yarn on cross-wound packages for warping, weaving, or knitting, the industry has practically experienced a deterioration of certain yarn characteristics like strength, elongation, hairiness, etc. The imperfections also change. The process parameters thus have a substantial influence on the final properties of the yarn.
Originally published in Textile Review, Feb-2011.
The author is a Research Scholar with DKTE'S Textile & Engineering Institute, Ichalkaranji.
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