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Shrinkage of fabric

1. shrinkage of fabric shrinkage of fabric refers to the percentage of fabric shrinkage after washin

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1. shrinkage of fabric shrinkage of fabric refers to the percentage of fabric shrinkage after washing or soaking. Generally speaking, the fabrics with the largest shrinkage rate are synthetic fibers and their blends, followed by wool and hemp fabrics. Cotton fabrics are in the middle with large shrinkage, while viscose fibers, artificial cotton and artificial wool fabrics are the largest. 2. factors causing shrinkage of fabrics: ① different raw materials of fabrics have different shrinkage rates. Generally speaking, the fiber with high hygroscopicity will expand, increase in diameter, shorten in length and increase in shrinkage after soaking. For example, the water absorption of some viscose fibers is as high as 13%, while the water absorption of synthetic fiber fabrics is poor, and its shrinkage is small. ② The shrinkage varies with the density of the fabric. If the longitude and latitude density are similar, the longitude and latitude shrinkage is also similar. Fabrics with high warp density have large warp shrinkage. Conversely, fabrics with greater weft density than warp density have large weft shrinkage. ③ The shrinkage of fabrics varies with the yarn count. The shrinkage of cloth with coarse count is larger than that of fabric with fine count. ④ The shrinkage of fabrics varies with the production process. Generally speaking, in the process of weaving, dyeing and finishing, the fiber has to be stretched for many times, and the processing time is long. The fabric with large applied tension has a large shrinkage, and vice versa.


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