1 When the original yarn is purchased, the yarn is fine, for example, 40 actual measurements have only 41 yarns. 2 Insufficient moisture regain. After printing and dyeing fabrics, there is a lot of moisture loss when drying, and the specification of the fabric refers to the grammage under the standard moisture regain. Therefore, when the weather is dry and the dried fabric does not fully regain moisture, the grammage will be insufficient, especially the natural fibers such as cotton, silk, and wool, and the deviation will be very large. 3 The abrasion of the original yarn during the weaving process will result in too many hairs falling off resulting in finer yarns and lower grammage. 4 Re-staining during the dyeing process can result in a large loss of yarn and a reduction in yarn weaving. 5 In the singeing process, the singeing fire force causes the cloth surface to be too dry, and the yarn is damaged when the desizing process leads to thinning. 6 The caustic soda damages the yarn when mercerizing. 7 Fleece, sanding finishing damage to the fabric. 8 The last is that the density does not meet the process requirements. Did not produce according to specifications, weft density, lack of dense. Â
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