It has ideal water-soluble temperature and elongation, good acid resistance, alkali resistance and dry heat resistance. After being dissolved in water, it is odorless and nontoxic. The aqueous solution is colorless and transparent, and can be naturally biodegraded in a short time. Its main uses are as follows: untwisted towels. Untwisted fluff towels made of water-soluble vinylon filaments have the characteristics of fullness, softness and high water absorption. This kind of towel has the characteristics of not cutting velvet but slightly glowing, and its visual inspection and feel are as high-grade as velvet towels. Water-soluble vinylon yarn can be heated by pure heat without any chemical additives. It is easily soluble in water and has excellent knitting stability, and is widely used for knitting socks. Water-soluble vinylon filament is woven between two socks to be separated, instead of ordinary yarn, such as cotton yarn or seaweed fiber. The residual water-soluble filaments in socks will all dissolve during dyeing or washing. The water-soluble wire adopts S.X type, and the dissolution temperature is 50℃, which can be increased to 60℃ during operation. Cancel the process of separating socks with automatic separator or scissors.