Sunday, January 5, 2014

Warping




 Warping

The purpose of warping is to arrange a convenient number of warp yarns so that they can be collected on a single warper’s beam. Only beam warping or direct warping is available here.

Now we have to know how the grey yarn will run for warping. During the analysis & planning for sampling period we make a paper that is supplied taking the approval of manager & Go to warping & sizing section as well as to the weaving section.


Object of warping



o   creation, out of a limited number of warp threads (creel load), of a warp composed of any
o   number of threads with the desired length
o   arrangement of above-mentioned threads according to the desired sequence
o   Manufacturing of a warp beam with said characteristics
o   To produce the warp beam for subsequent process
o   To contract a parallel yarn sheet of specified length & width
o   The entire yarn in the warp beam should be uniformly tensioned 
o   Modified the fault of yarn
 



Direct warping:
 
Where the large number of total yarn and less than 15% color yarn we can used to direct warping.
Beam warping or direct warping is used mostly when several beams of same warp length have to be prepared; also this kind of warping is carried out in two separate stages:

• At first the proper warping takes place: the available threads (creel capacity) are wound on large cylinder called ″beam ″ and so many beams are prepared as indicated by the result of following


  

In a second stage the threads wound on the beams are simultaneously unwound to form the weaver’s beam.



Calculation direct warping:

Example:
number of warp yarns= 7140
creel capacity= 720
 

 

Fault of warping

  • Warp off center of the beam.
  • Loose and tight warp deam.
  • Missing end.
  • Uneven and coarse knot. 
  • Lapped end. 
  • Conical winding on the deam. 
  • Inproper length of tarn warping. Long and large slub and other empurities.

Warping Machine Profile:
  
Machine Name:  KARL MAYER
Machine Origin:  Germany
Machine Specification:




 

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