Explanation

It refers to the process of directly synthesizing a polymer solution or dissolving the polymer in an appropriate solvent to prepare a certain concentration of spinning stock. This spinning solution undergoes preliminary preparation steps such as mixing, filtering, and defoaming, and is then transported to the spinning machine. Through the metering pump, candle shaped filter and spinneret, the stock solution is injected into the solution containing coagulant in a small flow to solidify and curing, and finally form as-spum fiber. At present, synthetic fiber composed of polyacrylonitrile fiber, polyvinyl alcohol fiber, viscose fiber and some other macromolecule generally adopt the wet spinning process. This process is carried out in liquid, which is different from dry spinning. wet spinning allows precise control of fiber shape and structure to meet the needs of different applications.

Classification