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PRODUCTION OF MODIFIED POLYESTER FIBER AND PRODUCTION OF FIBRILATED POLYESTER FIBER USING MODIFIED POLYESTER FIBER OBTAINED THEREBY
PRODUCTION OF MODIFIED POLYESTER FIBER AND PRODUCTION OF FIBRILATED POLYESTER FIBER USING MODIFIED POLYESTER FIBER OBTAINED THEREBY
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机译：由此获得的改性聚酯纤维的生产改性聚酯纤维和纤维化聚酯纤维的生产
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摘要
PROBLEM TO BE SOLVED: To prevent increase of back pressure of a spinneret in melt spinning or yarn breakage, etc., in producing a polyester fiber whose main recurring unit containing an organic sulfonic acid metal salt is ethylene terephthalate. ;SOLUTION: A flow of a polyester polymer whose recurring unit is ethylene terephthalate is fed from a main extruder and joined to a melted modifier component flow of an organic sulfonic acid metal salt fed through the second weighing pump from a twin screw extruder and evacuated to ≤50Torr pressure. Immediately after joining, the joined flow is passed through a first stationary type mixing and stirring element and weighed by the first each weighing pump and spun through each spinning pack equipped with a spinneret into a fiber. The resultant fiber is subjected to dry heat treatment for ≥10sec at ≥120°C and subjected to weight reduction treatment in an amount of ≥10% based on the fiber weight with an aqueous solution of alkaline compound to carry out fibrillation.;COPYRIGHT: (C)1997,JPO
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