CONDUCTIVE CONJUGATE FIBER

PROBLEM TO BE SOLVED: To provide conductive conjugate fiber high in conductive performance on the fiber surface and excellent in process passableness in yarn manufacturing process and higher-order process through optimizing the conjugate design of the fiber. SOLUTION: The conductive conjugate fiber has such a structure that a thermoplastic resin A containing 15-50 wt.% of conductive carbon black and a fiber-forming polyester-based thermoplastic resin B are conjugated with each other. In the conjugate fiber, the cross section of the single filament has such a design that the conjugate boundary curve DE between the component A and the component B is convex toward the component A, the ratio r/R is ≤0.6 (wherein, r is the minimum radius of curvature of the curve DE, and R is the radius of the single filament), and the circumferential length covered by the component A in the outer circumference of the cross section accounts for 2-40% of the whole circumferential length. COPYRIGHT: (C)2007,JPO&INPIT