Types of Warping Defects ?

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.