| abstract |
A bulky polyester multifilament composite yarnnhaving a delicate hand and an appropriate bulkiness,nwhich comprises two types of polyester filaments FA andnFB differing from each other in average filament length,nthe FA being formed from a polyester resin containing 0.1nto 9.0% by mass of a micropore-forming agent (e.g., anpolyoxyalkylene polyether, a metal organic sulfonate, anmetal-containing phosphorus compound, and the like) andn0.5 to 5.0% by mass of a residual elongation improvern(e.g., a polymer of methyl methacrylate, a polymer of anstyrene compound, a polymer of a methylpentene compound,nand the like) based on the mass of the polyester resin,nthe FA having an average filament length that is fromn1.07 to 1.40 times the average filament length of the FB,nand the FA forming the peripheral portion of thencomposite yarn. |