Wet spinning of synthetic polymer fibers

OZIPEK and H. KARAKAS, Istanbul Technical University, Hirkey 

Key words wet spinning, extrusion, coagulation, stretching, fiber 

Wet spinning of fibers requires pumping of the polymer solution through the fine orifices of a spinneret into a coagulating bath, and drawing off as continuous filaments by means of take-up rollers. The bath removes the solvent from the as-spun filaments so that they become solidified. They are collected together to form a continuous tow or rope. 

Wet spinning of acrylic fibers may be carried out in a variety of precipitating baths. Glycerol or water is used in the baths. Meanwhile, no specific method has been released for a particular yarn production yet. Differences in bath composition result in significant differences in the properties of the acrylic fibers produced. 

Some of the baths used for acrylic fibers can be summarized as follows  

---

Synthetic fibers, the subject of this article, are produced from linear synthetic polymers by different spinning processes. Depending on whether the process is based on polymer melt or polymer solution, the processes are divided into dry or wet spinning. 

---