DURABLE HYDROPHILIC FIBER HAVING EXCELLENT COLOR FASTNESS, AND MOLDED FIBER AND ABSORBENT ARTICLE COMPRISING SAME

摘要

Provided are a fiber, which has very excellent color fastness and high durable hydrophilicity, and a molded fiber, for example a nonwoven fabric, comprising the same; also provided is an absorbent article using the fiber or molded fiber. A fiber which comprises at least one type of thermoplastic resin and to which a fiber treatment agent is attached, wherein the fiber treatment agent comprises at least 25 mass% of a component (A), at least 5 mass% of a component (B), and at least 5 mass% of a component (C), on the basis of the active ingredient, and 0.1-1.0 mass% of the fiber treatment agent is attached with respect to the mass of fiber. Component (A): A sulfuric acid ester salt having a C8-22 hydrocarbon group; Component (B): A sulfosuccinic acid diester salt having a C12-20 hydrocarbon group; Component (C): A phosphoric acid ester salt having a C4-18 hydrocarbon group. A molded fiber primarily comprising the fiber; and an absorbent article obtained using the molded fiber.