re determined according to different clothing and uses. There are often three kinds of handle: soft, medium and hard. The handle and elasticity of good quality resin lining change little after washing. People often use this method to judge the quality of resin lining; In addition, the breaking strength of the resin lining and the change of the size after washing are also the indicators to judge the quality of the resin lining. The breaking strength refers to that the resin lining needs to be coated during processing. The harder the handle, the more resin needs to be coated, and the lower the breaking strength; The change of washing size is mainly caused by the expansion, relaxation and shrinkage of fibers and fabrics after immersion in water.