Elastic covering yarn and fabric

The combination of double-layer core yarn design and seaweed fiber covering layer solves the problem of spandex core-spun yarn slipping and breaking during stretching, improves the stability and service life of the yarn, and provides uniform elasticity distribution and tensile resistance.

CN223422856UActive Publication Date: 2025-10-10GUANGDONG FORWARD DENIM
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Patent Information

Application Number
CN202422872956.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-25
Publication Date
2025-10-10
Estimated Expiration
2034-11-25

AI Technical Summary

Technical Problem

Existing spandex core-spun yarns are prone to slippage during the stretching process, resulting in exposed spandex yarns. Frequent stretching causes the spandex yarns to break, affecting the service life of the fabric and the stability of the fabric structure.

Method used

It adopts a double-layer core yarn design, with T400 elastic fiber and secondary core yarn arranged in parallel or spirally intertwined, and the outer seaweed fiber layer covers the spandex yarn to enhance the yarn structure stability and overall breaking strength. The seaweed fiber absorbs water vapor and fills the gaps to inhibit the slippage of the spandex yarn.

Benefits of technology

It improves the breaking strength and durability of the yarn, reduces the risk of spandex exposure and breakage, extends the service life of the fabric, and provides good elasticity and comfort.

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Abstract

The utility model discloses an elastic core-spun yarn and a fabric, and belongs to the textile field, the elastic core-spun yarn comprises a yarn core and a cotton fiber coating layer coated outside the yarn core, the yarn core comprises a T400 elastic fiber and a secondary core-spun yarn, the center of the secondary core-spun yarn is a spandex filament, and the center of the secondary core-spun yarn is a polyester filament. The surface of the secondary covering yarn is an alginate fiber covering layer covering the spandex yarn, and the surface of the T400 elastic fiber is in contact with the surface of the secondary covering yarn. The elastic core-spun yarn is more tough than common spandex core-spun yarn, larger tensile strength is provided in the stretching process due to the increase of the number of fibers on the cross section of the yarn, the two yarn cores can bear larger loads, the T400 elastic fibers are of a spiral curled structure, the elongation rate can be increased, and the elastic core-spun yarn is more comfortable to wear. Meanwhile, the alginate fibers can expand after absorbing water vapor and sweat emitted by a human body, the spandex filaments are prevented from being exposed, the spandex filaments are more strongly restrained, and therefore the yarn core is not prone to breakage, and the elastic covering yarn has the longer service life.
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