MELT-BLOWN NONWOVEN FABRIC MADE OF POLYARYLENE SULFIDE AND ITS PRODUCTION

摘要

PROBLEM TO BE SOLVED: To provide a melt-blown nonwoven fabric made of a polyarylene sulfide having high strength, heat-resistance and chemical resistance and ultrafine fiber diameter. ;SOLUTION: A melt-blown nonwoven fabric 9 made of ultrafine polyarylene sulfide fiber is produced by mixing an organic acid or inorganic acid to a reaction liquid after completing the polymerization reaction of polyarylene sulfide, washing the mixture and blowing the mixture in molten state. The polyarylene sulfide fiber has a weight-average molecular weight of 10,000-20,000 and a crystallization temperature of 220-260°C. The melt-blowing is carried out by extruding a molten mixture of polyarylene sulfide through a nozzle 10 adjusted to 280-400°C and, at the same time, drawing with hot air stream of 290-420°C and collecting the produced ultrafine fiber.;COPYRIGHT: (C)1999,JPO