| 摘要 |
PROBLEM TO BE SOLVED: To provide a cleaning method effective for the cleaning of stains around ejection nozzles of a spinneret caused by kneeling phenomenon in the conjugated spinning of polymers having intrinsic viscosity difference and enabling the increase in cleaning interval, elongation of continuous work period of the spinneret face and the improvement of the process stability of the produced fiber in the following steps. SOLUTION: The method for the cleaning of a conjugated spinning spinneret is characterized by the cleaning of the face of the melt-spinning spinneret having ejection nozzles to eject two kinds of polymers having intrinsic viscosity difference in conjugated state after applying a liquid having a latent heat of evaporation of≥30kJ/mol to the spinneret face. COPYRIGHT: (C)2004,JPO
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