| 摘要 |
PROBLEM TO BE SOLVED: To provide an electroconductive conjugate fiber causing no component- component debonding during its production process, retaining its initial electrical conductivity even after long-term use and excellent in color fastness. SOLUTION: This electroconductive conjugate fiber is composed of (A) an electroconductive polyamide layer containing 15-50 wt.% of electroconductive carbon black and (B) a protective polymer layer consisting of a polyamide with specific composition; wherein the component (A) is exposed on the fiber surface, the number of the exposures being >=3/filament and as for one exposure, the exposure length L1 (μm) along the fiber section circumferential length satisfies the formula: 0.1<=L1<=L2/10 (L2 is one filament's fiber section circumferential length (μm)), and the protective polymer layer (B) occupies >=60% of the fiber section circumferential length and accounts for 50-97 wt.% of the whole fiber.
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