The lowest shrinkage rate is synthetic fiber and blended textiles, followed by wool, hemp, cotton, silk fabric shrinkage is larger, and the largest is viscose fiber, artificial cotton, artificial wool fabrics. Objectively speaking, cotton fabrics more or less have the problem of shrinking and fading, the key is the finishing behind.
Therefore, the general fabric of home textiles is preshrunk. It is worth noting that after pre-shrinkage treatment is not equal to no shrinkage, but refers to shrinkage rate control in the national standard 3%-4% clothing material, especially natural fiber clothing material will shrink. Therefore, in the choose and buy clothing material, in addition to the quality of the fabric, color, pattern selection, shrinkage rate of the fabric should also be understood.
1. Influence of fibers and shrinkage
After the fiber itself absorbs water, it will produce a certain degree of swelling. Usually the swelling of fiber is anisotropic (except nylon), that is, the length of shortening, the diameter of the increase. The length difference between the fabric before and after the water and the percentage of its original length is usually called shrinkage. The stronger the water absorption capacity, the more intense the swelling, the higher the shrinkage rate, the worse the dimensional stability of the fabric.
The length of the fabric itself is different from the length of the yarn (silk) used,
The difference is usually expressed in terms of
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