dry spinning

Dry spinning is a method used in the production of man-made fibers. In this process, a polymer is dissolved in a solvent to create a viscous liquid. This liquid is then pumped through a spinnerette, which has fine holes, into a heated column called a spinning tower. As the liquid passes through the tower, the solvent evaporates, leaving behind solid fibers. These fibers may still contain some solvent, which is removed through further heating or washing. The process is followed by stretching the fibers and applying a finish before they are wound onto spindles or cut into staple lengths. Dry spinning is a faster process than wet spinning but results in lower productivity and is typically used for more expensive specialty fibers like spandex.1