wetspun

Wetspun is a manufacturing process used to create continuous filaments or fibers from a solution. The process involves extruding a polymer solution, known as a dope, through a spinneret into a coagulation bath. The coagulation bath is a liquid that causes the solvent in the dope to dissipate, solidifying the polymer into a filament. The type of polymer and the composition of the coagulation bath are critical factors determining the final properties of the spun material.

This method is commonly employed for the production of various man-made fibers, including acrylic, rayon, and spandex. The precise control over extrusion rate, bath temperature, and bath composition allows for tailoring the diameter, cross-sectional shape, and internal structure of the filaments. This, in turn, influences the physical characteristics of the resulting fibers, such as their strength, elasticity, and absorbency. After the coagulation process, the filaments are typically washed, stretched, and dried to achieve their final form and properties before being wound onto spools or further processed into textiles.