Wet spinning method for improving acrylic fiber glossiness

The invention belongs to the technical field of textile manufacture and discloses a wet spinning method for improving acrylic fiber glossiness. The wet spinning method is mainly used for adjustment of inorganic salt solvent-based acrylic fiber wet spinning. According to the wet spinning method, a coagulating bath unit is divided into two zones, and the extrusion swelling zone has a coagulating bath concentration of 6-12wt% so that smooth fiber surfaces are formed. Filament bundles shaped by the coagulation bath is subjected to cold drawing comprising hot water spraying drawing or steam drawing so that fiber tightness is improved and fiber surface grooves are reduced. The filament bundles are subjected water washing, then are fed into a hot drawing tank and are subjected hot drawing in an environment at a temperature higher than a vitrification point. The wet spinning method utilizes a re-drawing process so that a fiber orientation degree and crystallization performances are improved. The wet spinning method has simple processes, can be operated easily and can produce the fibers with good glossiness and transparency.