Special high-elasticity yarn and fabric thereof

Abstract

The invention discloses a special high-elasticity yarn, which is characterized by comprising an outer wrapping fiber and a core yarn, wherein the outer wrapping fiber is spirally wrapped outside the core yarn; the outer wrapping fiber is a high-elastic composite yarn; the high-elasticity composite yarn is a bi-component composite yarn prepared by conjugate spinning PBT and PET through a double-screw spinning machine; the mass ratio of PBT to PET in the high-elasticity composite yarn is 58 to 42; the high-elasticity composite yarn is subjected to wet heat treatment after spinning, since PBT and PET two components can contract differently, the fiber generates longitudinal stress and torsion deviating from the longitudinal axis at the same time, presenting a double-spiral three-dimensional structure; the core yarn is PTT filament yarn; and the PTT filaments are arranged in parallel without twisting. The special high-elasticity yarn has good elasticity, high yarn strength, good elasticity recovery, rapid moisture absorption and dissipation, good air permeability, dry and soft touch feeling, good hand feeling, good color fastness and good use effect.

Description

technical field [0001] The invention relates to the textile field, in particular to a special high-elastic yarn and its fabric. Background technique [0002] As an important part of textile materials, synthetic fiber has been fully developed in the 20th century, especially polyester fiber has become a bulk textile raw material because of its excellent performance and low price, and ranks first in synthetic fiber. As far as various polyester fibers are concerned, the comprehensive performance of PBT fiber is better than that of PET fiber, while PTT fiber has the advantages of both, and its elastic or hypoelastic characteristics and high cost performance are better than polyurethane elastic fiber. of concern. Highly elastic polyester fibers are seldom used directly to weave textiles. On the one hand, it is difficult to control because the elastic fibers are too elastic, and on the other hand, their strength and other properties are also difficult to meet the requirements. E...

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Problems solved by technology

[0003] In order to solve the above-mentioned technical problems, the present invention provides a special high-elastic yarn and its fabric, which adopts a skin-core structure and cooperates with a high-elastic composite yarn with a double-helix three-dimensional structure and a PTT filament to solve the problem of existing polyester fiber yarns. Unsatisfactory yarn performance, poor elastic recovery, and poor moisture absorption and perspiration performance

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