Dimensional Stability
The reduction in the length and width of woven linen cloth after washing or wetting arises from the relaxation of internal stresses generated during weaving. Fabric shrinkage occurs when the tightly stretched yarns return to their natural, relaxed state upon contact with water and heat. This dimensional change must be measured and recorded on the mill’s technical datasheet so that garment manufacturers can adjust their cutting patterns accordingly.
Linen fibres are highly prone to relaxation shrinkage because the high tension applied to the warp yarns during weaving is locked into the dried fabric, only to be released when the fibres swell in water.
Finishing Compensation
Industrial finishing treatments, such as sanforizing or mechanical pre-shrunk processing, are used to minimize subsequent dimensional changes in the final garment. Controlling fabric shrinkage during the finishing stage involves applying controlled moisture and mechanical compression to the cloth. This process pre-condenses the linen structure, ensuring that the finished fabric remains dimensionally stable during domestic laundering.
Quality Standard
Weaving mills must guarantee that their shipped goods do not exceed the maximum shrinkage limits specified in the purchase contract. Tests are conducted by washing fabric samples under standardized temperature and agitation cycles before measuring the distance between pre-marked reference points. If the fabric shrinkage exceeds the agreed threshold, the buyer may demand a discount or reject the entire batch of cloth.
