Defects/Faults and Remedies of Warping

Warping means, winding of warp yarns onto a beam usually in preparation for slashing, weaving, or warp knitting. It is also called Beaming. When warping operation is done some defects occur as well as other operations. Now we will discuss faults and it’s remedies of warping.

Defects & Remedies of Warping: 1. Lapped end: 
Cause: 
The broken end of yarn is not tied to the end on the warp beam & overlaps the adjoining yarn. The beam is not properly brake & the signal hook fails to operate.

Remedies: 

• Tying the broken end to the end on the warp beam.
• Proper signal hook.

2. Piecing: 
Cause: 
One broken end is pieced to another yarn end on the warping beam.

Remedies: 

• By proper joining.

3. Soft ends on the warping beam: 
Cause: 
Breakage of a group of ends & piecing them in bundle or by lapping. This defect is caused by the careless of the operator.

Remedies: 

• Careful operation.
• Broken end should be piece up properly.

4. Incorrect form of build: 
Cause: 
Caused by non uniform spreading of ends in the guide reed & its improper setting & conical winding in case of non uniform pressure of the warping beam.

Remedies: 

• Uniform spreading of ends.
• Appropriate setting.

5. Slacks & irregular yarn tension: 
Cause:
It happens due to any one of these reasons- improper threading of the yarn into the tension devices, ejection of yarn from under the disc of the yarn tensioning device, or yarn tension devices of poor quality.

Remedies: 

• Proper threading of tension device.
• Good quality of tension device.

6. Broken ends on the beam:
Cause: 
A group of ends is broken & tied as a brunch or worked-in with overlapping.

Remedies: 

• Broken ends should be removed.

7. Conical winding on the beam: 
Cause: 
It occurs due to incorrect load applied by the pressure roller.

Remedies: 

• Correct load applied.

8. Improper length of warping: 
Cause: 
It is due to malfunction of the counter & the brakes of the measuring device & warp beams.

Remedies: 

• Good measuring device.

Posted in: Weaving