Operating Skills in Grinding Process

Because the grinding effect of fabrics is at the cost of sacrificing the strength of fabrics, there is a problem of optimum balance between the grinding effect and the strength of fabrics. To grasp the balance between the two requires that sandpaper films be produced strictly in accordance with the grinding process parameters and operating rules.

A. Grinding is to cut the fabric yarn with some fibers by sand grains to produce uniform hairiness. If the cut is too deep, the hairiness will be long and the strength loss of the fabric will be great.

B. Thicker sandpaper is cut deep and sparse. The feathers on the cloth surface are long and sparse and easy to drop. The cloth surface is like "radish" strips. The fabric is weightless and the strength loss of the fabric is large.

C. Fine sandpaper is cut shallowly and densely, with short and dense hairs on the cloth surface. It is not easy to shed hairs. The cloth surface is soft, and the hairs are even. The strength loss of the fabric is small and the weight loss rate is small. In general, it is better to grind into short and dense villus, which can prevent the color difference caused by uneven grinding.

D. The hydrophilic silicone oil of 10g/L should be added to the worse yarn and other special fabrics. The pressure should not be too high to prevent the phenomenon of worn and broken ends.

E. Abrasive paper roll should operate in principle according to one positive and one negative, but the direction of the first and last should be consistent with the direction of distribution.