Patent ID: 9234301
Filing Date: 2016-01-12
CPC Classification: D01D

Claim Text:
1. A method for wet spinning for synthetic fibers with a wet spinning apparatus including a spinning bath having a coagulation bath portion, a filament running portion, and a joint portion between the coagulation bath portion and the filament running portion, the method comprising: providing a cross sectional area of the coagulation bath portion as gradually reduced from a first end to a second end of the coagulation bath portion; providing a cross sectional area of the filament running portion as gradually enlarged from a first end to a second end of the filament running portion; providing, at the first end of the coagulation bath portion, a bath wall including a non-porous plate and at least one port; supplying coagulation fluid to the coagulation bath portion with the bath wall; wet spinning the synthetic fibers using the wet spinning apparatus; and regulating a flow rate of a coagulation liquid at the joint portion to fall in a range of 0.5 to 1.5 times as much as a drawing speed of a running filament tow.