METHOD FOR PRODUCING POLYESTER FIBER

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a high strength polyester fiber or a polyester combined filament yarn excellent in high bulkiness and dynamic characteristics by using 1 kind of a polymer. SOLUTION: This high strength polyester fiber is obtained by passing a spun yarn through a heating device having an atmospheric temperature of (the melting point of the polyester -100°C) to 300°C in spinning the polyester by ejecting it from a spinneret, and further, by using the polyester fiber as 1 component of a spun combined filament yarn to obtain the spun combined filament yarn consisting of the polyester fiber. COPYRIGHT: (C)2007,JPO&INPIT