Sunday, May 13, 2012

Winding

Winding is used to transfer yarn from spinner bobbin to another suitable package for warping machine.

Requirement

  • The fault level in the yarn must be reduced to an acceptable level.
  • The yarn must not be damaged in the winding process.
  • The package size, shape and build must be suitable for particular end use.
  • The package size should be controlled to meet the particular economic requirement. 
Machines Used For Winding

Autoconers:  These are machines used to remove impurities, irregularities, and imperfections like thick or thin places, slubs, nebs or loose fibers from the yarn obtained from spinning. There is a special feature called ‘auto-doffing’ in all of these. In this mechanism, after the yarn package finishes, another package automatically drops and the winding process continues.
   Doffing capacity = 60 doffs per hour.
   Weight of the yarn = yarn length/ (1694* yarn count)

Types Of yarn package
Cone : This comprises of one or more threads, which are laid very nearly parallel to layers already existing in the package. It may be tapered in both sides and package weight varies from 1-2 kgs.

Cheese :  This consists of a single thread, which is laid in the package at an appreciable helix angle so that the layers cross one another to yield stability. It is generally in cylindrical form and weight varies from 1-2 kgs.
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