Viscose fiber, referred to as viscose fiber, also known as viscose filament, is a kind of man-made fiber. Viscose fiber is the main variety of man-made fiber and the second largest chemical fiber in China. Its main raw material is chemical pulp, including cotton pulp and wood pulp, which is regenerated by separating natural cellulose through chemical reaction. The main raw material used in China is cotton pulp.

Viscose fiber has good hygroscopicity, easy dyeing, difficult static electricity and good spinnability, and is widely used in textile, clothing and other fields.

Viscose fiber is one of the ancient fiber varieties. 189 1 year, Cross, Bevan and Bedell first made sodium cellulose sulfonate solution from cotton, which was named "viscose" because of its high viscosity. After viscose meets acid, cellulose precipitates again. According to this principle, 1893 has developed into a method for manufacturing cellulose fiber, which is called "viscose fiber". 1905, m et al. invented a coagulation bath composed of dilute sulfuric acid and sulfate, and realized the industrial production of viscose fiber.