Problem of Warping

Md. Joynul AbedinTextile Eng. 28th BatchDaffodil International University

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.

Flow Chart of Warping:

Creel↓ 

Control system↓ 

Reed↓ 

Measuring Roller↓ 

Winding on a roller or beam↓

Direct Warping

Problem of Warping

1. Missing ends2. Piecing  3. Broken ends on the beam4. Lapped end 5. Warp of center of the beam6. Soft ends on the warping beam 7. Incorrect form of build  8. Conical winding on the beam 9. Improper length of warping 10. Unequal length of warp

Missing ends

Causes: Due to Fault stop device Exhausted cone or bobbin Absence of cone or bobbin on

creel

Remedies: By correct stop device used

Piecing

Cause: One broken end is pieced to

another yarn end on the warping beam.

Remedies: By proper joining.

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.

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.

Warp of center of the beam

Causes: due to not carefully placing of

creel wraith flanged beam

Remedies: Beam and wraith placed

properly

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.

Incorrect form of build  

Cause: Caused by non-uniform

distillation 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.

Conical winding on the beam

Cause: It occurs due to incorrect load

applied by the pressure roller.

Remedies: Correct load applied.

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.

Unequal length of warp

Causes: Due to faulty measuring device

Remedies: Tension &pressure maintained

Any Question?

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