Parameters Affecting Performance of Warp Yarns During Weaving

Before weaving, the warp and weft yarns are subjected to several preparation processes. Winding, warping, sizing, denting are the major weaving preparation process.

The weaving or interlacing of warp and weft threads is accomplished with a machine which is known the world over as loom. The loom may be a hand loom or power loom. The power loom is also referred to as the weaving machine.

weaving preparation
Fig: Weaving preparation
Before their use on the loom, wrap and filling yarns must be prepared for weaving. In preparation for weaving, each warp end must be threaded through its own drop wire, heddle eye, and reed dent. The drop wire is a device that will stop the loom if an end break, the heddle eye is the opening in a heddle that carries the yarn and the reed comb like device that will push each filling yarn close against the completed fabric.

Parameters of Warp Yarns During Weaving
  1. Material characteristics.
  2. Fiber type, e.g., cotton, polyester, acetate.
  3. Yarn type & structure including blend composition, e.g. staple, ring, open end, air-jet, combed, carded, core spun, continuous filament.
  4. Yarn hairiness.
  5. Yarn preparation; winding, warping, slashing.
  6. Tension on yarn during sizing.
  7. Moisture content.
  8. Drying temperature.
  9. Slashing machine parameters.
  10. Slashing speed.
  11. Size box characteristics.
  12. High pressure squeeze rolls, including hardness of rolls.
  13. Amount of size.
  14. Yarn tension.
  15. Closeness of yarn.
  16. Loom parameters.
  17. Type of loom.
  18. Weave
  19. Loom speed.
  20. Warp tension.
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Mazharul Islam Kiron is a textile consultant and researcher on online business promotion. He is working with one European textile machinery company as a country agent. He is also a contributor of Wikipedia.

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