purpose of fabric refining

After the desizing of cotton and cotton fabrics, although most of the size, oil and a small part of natural impurities have been removed, but due to the presence of residual size, oil and natural impurities, not only the color of the fabric surface is yellow, but also the water absorption is still poor. Therefore, for cotton and cotton fabrics, the main purpose of desizing is to remove natural impurities as the main purpose of refining, and further reduce the amount of impurities on the fabric, in order to facilitate the smooth processing of subsequent processing. Whether the polyester / cotton fabric needs refining after desizing depends on the variety, method of desizing, subsequent processing and factory conditions.