1. fabric shrinkage

Fabric shrinkage refers to the percentage of fabric shrinkage after washing or soaking in water. Generally speaking, the fabrics with the largest shrinkage rate are synthetic fibers and their blended textiles. Suzhou windbreaker down jackets are followed by wool fabrics and linen fabrics. Cotton fabrics are in the middle, and the shrinkage is relatively large, while the largest ones are viscose fiber, rayon, and artificial wool fabrics.

2. Factors causing fabric shrinkage

(1) The raw materials of the fabric are different, and the shrinkage rate is different. Generally speaking, fibers with high hygroscopicity will expand after soaking in water, their diameter will increase, and their length will shorten, and their shrinkage rate will be large. The water absorption rate of viscose fiber in Suzhou windbreaker and down jacket is as high as 13%, while the moisture absorption rate of synthetic fiber fabric is poor, and its shrinkage rate is small.

(2) The density of the fabric is different, and the shrinkage rate is also different. Suzhou windbreaker down jackets have similar warp and weft densities, and their warp and weft shrinkage rates are also similar. The fabric with high warp density will shrink greatly in the warp direction. On the contrary, if the weft density is greater than that in the warp density, the shrinkage in the weft direction will be large.

(3) The yarn count of the fabric is different, and the shrinkage rate is also different. Fabrics with coarse yarn counts have higher shrinkage rates, while fabrics with fine yarn counts have lower shrinkage rates.

(4) Different fabric production processes have different shrinkage rates. Generally speaking, in the process of weaving and dyeing and finishing of fabrics, the fibers need to be stretched many times, the processing time is long, and the shrinkage of the fabric with greater tension is greater, and vice versa.