spin bath

materials production

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July 14, 2026

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The term "spin bath" refers to a coagulation bath used in the process of wet spinning, a method for producing man-made fibers. In this process, a liquid polymer solution is extruded through a spinneret into the spin bath, which typically contains water or another nonsolvent. The solvent diffuses out of the extruded material, and the nonsolvent diffuses in, causing the polymer to solidify and form a fiber. This technique is crucial for manufacturing various synthetic fibers, including rayon and acrylics, and allows for the recovery of solvents to improve economic and environmental efficiency.1

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man-made fibre
Solution spinning
…not always) placed in the spin bath, a coagulation bath in which solvent diffuses out of the extruded material and a nonsolvent, usually water, diffuses into the extrudate. The resulting gel may be oriented by stretching during this stage, as the polymer is coagulated, or the freshly formed fibres may…
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…not always) placed in the spin bath, a coagulation bath in which solvent diffuses out of the extruded material and a nonsolvent, usually water, diffuses into the extrudate. The resulting gel may be oriented by stretching during this stage, as the polymer is coagulated, or the freshly formed fibres may…
Read More