GSM variation (dyeing fault & remidies)

1.   GSM Variation:-

Definition:

·       The fabric will appear to have a visible variation in density, from roll to roll or within the same roll of the same dye lot.

Causes:-

·     Roll to roll variation in the process parameters, of the fabric, like over feed &width wise stretching of the dyed fabric, on the stenter, compactor or calendar machines.

·       Roll to roll variation in the fabric stitch length.

Remedies:-

·       Make sure that all the rolls in a  lot, are processed under the same process parameters.

·       The knitting machine setting, like; the quality pulley diameter etc. should never be disturbed.