Compared with the production process of viscose fiber, the production process of Tencel fiber does not require chemical reactions, and the cellulose molecules avoid degradation caused by chemical reactions. This process is: first dissolve the wood pulp in the NMMO solvent, remove impurities and filter; then use the dry-jet wet spinning process to spin; then wash, dry, curl and cut the silk, and at the same time, almost 100% NMMO The solvent is recovered and reused. The process flow is shown in Figure 5-3.
(2) Process measures for preparing spinning solution
(1) Since too high a dissolution temperature will degrade the spinning solution, in principle the dissolution temperature should be the predetermined dissolution of the system
AAA functional fabric network DBGRTHRTH
