METHOD FOR PRODUCTION OF LATENT CRIMPABLE POLYESTER CONJUGATED SHORT FIBERS, AND FIBER ASSEMBLY, AND NONWOVEN FABRIC

摘要

PROBLEM TO BE SOLVED: To provide latent crimpable polyester conjugated fibers excellent in crimpability in heat processing, high-speed carding property in production of nonwoven fabric and high-speed productivity in heat processing property or the like. SOLUTION: The latent crimpable polyester conjugated fibers are obtained by conjugating and spinning a first component and a second component, and comprises the first component with 120-145°C melting point Tf1after spinning and comprisesα-olefin-propylene copolymer with≥95 mass.% of propylene content and the second component with a thermoplastic resin which has of a melting point Tf2≥15°C higher than that of Tf1, and at least one in the total percentage of crimp and ratio of the incidental percentage of crimp to the total percentage of crimp is less than 15%, and the temperature exhibiting maximum peak of the heat crimping force is less than 145°C and has≥75% of dry heating percentage of crimp of the monofilament. COPYRIGHT: (C)2004,JPO