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In the manufacturing process of synthetic fabric, the oil, wax or size are used to increase the smoothness of the yarn and reduce friction. But the oil and size on the fabric are easy to appear the color spots, uneven color and size spots in the dyeing process. So we use scouring agent to remove the oil and size before the dyeing process of the fabric called the scouring process of the fabric. The scouring process of the fabric is applied in high temperature and 1~3 times washing in hot or cold water after scouring to make sure the oil removed is totally. It’s a energy and water consumption process. In this dissertation, the factors in the scouring process of the fabric were studied. According to change the temperature, pH and the time in the scouring process of the fabric and scouring agent were characterized by dosage, foaming and wetting.
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