Polyamide composite section fibers, polyamide composite section fibers and braids for prosthetic processing

Abstract

This invention relates to a polyamide composite cross-section fiber that satisfies the following conditions A to D and contains two types of polyamide. A. The composite morphology of the fiber cross-section is either parallel or eccentric core-sheath type. B. 15% stress is 2.0 cN / dtex to 3.5 cN / dtex. C. Elongation is 20% to 40%. D. The high load elongation E2 shown below is 7.0% or higher. A heat treatment load of total fineness × 5.4 (mg / dtex) × 20 × 2 is applied to a looped skein. After treatment in warm water at 99±1℃ for 30 minutes, the heat treatment load is removed, and the skein is dried in an environment with a temperature of 25℃, humidity of 60%, and no load. An initial load of total fineness × 5.4 (mg / dtex) × 20 × 2 is applied to the dried skein, and the length (La) is measured after 90 seconds. The initial load is removed, and then a constant load of 90 (mg·dtex) × 20 × 2 is applied, and the length (Lb) is measured after 30 seconds. Set (Lb-La) / La×100 (%) as the high load elongation rate E2.

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