Core-sheath composite cross-section fiber with excellent hygroscopicity and wrinkle resistance

A composite section and fiber technology, applied in fiber treatment, conjugated synthetic polymer rayon, textile, etc., can solve the problems of poor wearing comfort, sticky feeling, insufficient moisture absorption and release performance, etc., and achieve excellent moisture absorption performance , Excellent wrinkle resistance

Active Publication Date: 2020-07-28
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with natural fibers such as cotton, polyamide fibers have insufficient moisture absorption and release performance, and also have problems such as stuffiness and stickiness, and are inferior to natural fibers in terms of wearing comfort.

Method used

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  • Core-sheath composite cross-section fiber with excellent hygroscopicity and wrinkle resistance
  • Core-sheath composite cross-section fiber with excellent hygroscopicity and wrinkle resistance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0112] Using a polyether ester amide copolymer with a relative viscosity of o-chlorophenol of 1.69 (manufactured by Alkema, MH1657 (crumb ΔMR: 18.9)) as the core, and nylon 610 with a relative viscosity of sulfuric acid of 2.72 as the sheath, respectively, at 270°C Melted and spun from a die for concentric core-sheath compounding so that the core / sheath ratio (parts by weight) = 50 / 50.

[0113]At this time, the rotational speed of the gear pump was selected so that the total fineness of the obtained core-sheath composite yarn became 56 dtex, and each was set at a discharge rate of 22 g / min. Further, the filaments are cooled and solidified by the filament cooling device, and the non-aqueous oil is supplied by the oil supply device to the oil supply position 1000 mm away from the lower surface of the die, and then the interweaving is carried out with the first fluid interweaving nozzle device, so that as the first The peripheral speed of the traction roll of 1 roll is 2800m / min,...

Embodiment 2

[0116] A core-sheath composite cross-section fiber of 56 dtex / 24F was obtained by the same method as in Example 1 except that the heat setting temperature of the heating roll was 180°C.

[0117] With regard to the obtained core-sheath composite cross-section fibers, fineness, strength, elongation, stress per unit fineness at 3% elongation, boiling water shrinkage, stress retention at 3% elongation before and after boiling water treatment, and α-crystallinity Orientation parameters were determined. In addition, the obtained fabrics were evaluated for wrinkle resistance, ΔMR, ΔMR after washing, and ΔMR retention after washing. These results are shown in Table 1.

Embodiment 3

[0119] A core-sheath composite cross-section fiber of 56 dtex / 24F was obtained by the same method as in Example 1 except that the heat setting temperature of the heating roll was 165°C.

[0120] With regard to the obtained core-sheath composite cross-section fiber filaments, fineness, strength, elongation, stress per unit fineness at 3% elongation, shrinkage in boiling water, retention of stress at 3% elongation before and after boiling water treatment, α Crystallographic orientation parameters were determined. In addition, the obtained fabrics were evaluated for wrinkle resistance, ΔMR, ΔMR after washing, and ΔMR retention after washing. These results are shown in Table 1.

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Abstract

A core-sheath composite section fiber, characterized in that the core polymer is a thermoplastic polymer, the sheath polymer is a polyamide having a dicarboxylic acid unit mainly composed of a sebacic acid unit, and the boiling water shrinkage rate is 6.0~ 12.0%, the stress per unit fineness at 3% elongation in the tensile test of the fiber is 0.60 cN / dtex or more. The present invention provides a core-sheath composite cross-sectional fiber which is excellent in hygroscopicity and wrinkle resistance, and which can maintain hygroscopicity even after washing.

Description

technical field [0001] The present invention relates to a core-sheath composite cross-section fiber excellent in hygroscopicity and wrinkle resistance. Background technique [0002] Synthetic fibers made of thermoplastic resins such as polyamide and polyester are excellent in strength, chemical resistance, heat resistance, etc., and thus are widely used in clothing, industrial applications, and the like. [0003] In particular, polyamide fibers are widely used in underwear, sportswear, etc. due to their unique properties such as softness, high tensile strength, color development during dyeing, and high heat resistance, as well as excellent moisture absorption and release properties. However, compared with natural fibers such as cotton, polyamide fibers have insufficient moisture absorption and release performance, and also have problems such as stuffiness and stickiness, and are inferior to natural fibers in terms of wearing comfort. [0004] Based on such a background, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/12D03D15/00
CPCD01F8/12D01D5/34D03D15/292D03D15/573D03D15/283D03D15/47D10B2401/00D10B2401/022
Inventor 吉冈大辅高木健太郎佐藤佳史
Owner TORAY IND INC
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