High-strength ultra-fine fiber construction, method for producing the same and high-strength conjugate fiber.

摘要

A high-strength ultra-fine fiber construction includes a high-strength multi-filament yarn (a) including ultra-fine filaments of a single filament fineness less than 0.8 denier, (b) having a tenacity of 6.5 g/d or more, and (c) having an elongation at break of 15% or more. In order to obtain such a fiber construction, islands-in-sea-type or divisional type conjugate spinning is initially carried out to obtain conjugate multi-filament yarns, which are subjected to weaving to produce a fabric, and the island components are then separated by a sea removal or island dividing treatment in order to obtain a fiber construction containing high-strength ultra-fine fibers.