Surface Hairiness & Piling (Dyeing faults and Remedies)

Surface Hairiness & Piling:-

Definition:-

·       Surface hairiness appears in the form of excess superfluous fibers, on the surface of the knitted fabrics, which have either been reprocessed, or tumble dried.

·       Piling appears as small fiber balls formed on the fabric surface, due to the entanglement of the loose surface fibers.

·       Factor such as, the fiber staple length, low T.P.M. & fabric construction (With long yarn floats) etc. also contribute to piling.

Causes:- 

·       Abrasion due to the contract with rough surfaces.

·       Excessive surface hairiness caused, due to the abrasive tumbling action (Fabric friction in the tumble dryer).

·       Rough dyeing process and abrasive machine surface (Soft flow machine tubes, Tumble dryer drum etc).

·       Reprocessing of the fabric is, also a major cause of piling.

Remedies:-

·       Avoid using Tumble dryer.

·       Control shrinkage by maximum fabric relaxation& over feed in the processing.

·       Regularly inspect the fabric contact points on all the machines, for any rough and sharp surface. And rectify.

·       Avoid repeated reprocessing of the fabric .

Use anti piling agent for the fabrics, prone to piling