A functional composite nylon yarn

Abstract

The utility model relates to the technical field of blended yarn, and to the yarn with multiple functions coexisting prepared by the multiple different performance yarns and the strand winding, in the subsequent processing or use, the multiple strand yarns are easy to separate and lead to the problems, such as the decrease of elastic recovery rate or the peeling of wear-resistant layer, and specifically discloses a functional composite nylon yarn, which comprises an elastic core yarn unit and a wear-resistant interlaced unit wrapped on the periphery of the elastic core yarn unit, the elastic core yarn unit comprises multiple strands of nylon elastic core yarns, and the wear-resistant interlaced unit comprises wear-resistant nylon multifilament interlaced and wound on the periphery of the multiple nylon elastic core yarns. Based on the synergistic improvement of the elasticity and wear resistance of the yarn, the structural stability of the yarn is further improved through the structural design of the composite nylon yarn to meet the use requirements of sports textiles and other products, and the performance effects of high elasticity, wear resistance, stable performance and long service life are achieved.

Description

Technical Field

[0001] This utility model relates to the field of blended yarn technology, and more specifically, to a functional composite nylon yarn. Background Technology

[0002] In the field of sports textiles, such as the production of sportswear, sports socks, and sports protective gear, the raw yarn is required to have both excellent elasticity and abrasion resistance. On the one hand, the human body moves a lot during exercise, and the yarn needs to have enough elasticity to adapt to stretching and deformation, so as to avoid tearing or deformation of the fabric. On the other hand, the yarn is frequently rubbed against the outside world in sports scenarios, such as the friction between sportswear and equipment, and the friction between socks and shoes. It needs to have high abrasion resistance to extend the service life of the product. In current apparel yarns, nylon yarns used in sports textiles often suffer from the problem of balancing elasticity and abrasion resistance. Specifically, if elasticity is prioritized, single nylon elastic yarns are often used, but their surface abrasion resistance is poor, and they are prone to pilling and breakage after repeated friction. If abrasion resistance is prioritized, high-abrasion-resistant nylon multifilament yarns are often used, but their elasticity is insufficient and cannot meet the stretching requirements of sports scenarios. Some composite yarns attempt to combine elastic and abrasion-resistant yarns through simple plying or wrapping. For example, patent CN223280993U provides an abrasion-resistant yarn, including a high-elasticity core yarn, on the outside of which a moisture-retaining yarn, a high-strength yarn, and a first abrasion-resistant yarn are spirally wound. A second and third abrasion-resistant yarn are set on the outside of the moisture-retaining yarn, the high-strength yarn, and the first abrasion-resistant yarn. By plying and wrapping multiple yarns, the overall abrasion resistance and elasticity of the yarn are improved.

[0003] However, existing methods that combine yarns with two different performance characteristics in parallel stranding result in poor stability between the two yarns. They are prone to separation during stretching, leading to a decrease in elastic recovery or the shedding of the abrasion-resistant layer, which makes it difficult to meet the long-term use requirements of sports textile scenarios.

[0004] Therefore, there is an urgent need to design a composite nylon yarn with stable structure, excellent elasticity and strong wear resistance to overcome the shortcomings of existing technologies. Utility Model Content

[0005] The purpose of this invention is to solve the problem that existing multi-functional yarns, made by winding multiple yarns with different properties together, are prone to separation during subsequent processing or use, leading to decreased elastic recovery or peeling of the abrasion-resistant layer. This application provides a functional composite nylon yarn that, based on the synergistic improvement of yarn elasticity and abrasion resistance, further enhances the structural stability of the yarn through structural design, thereby meeting the needs of sportswear and other applications and achieving high elasticity, abrasion resistance, stable performance, and long service life.

[0006] This utility model is achieved through the following technical solution: This utility model provides a functional composite nylon yarn, including an elastic core yarn unit and an abrasion-resistant interlacing unit covering the outer periphery of the elastic core yarn unit. The elastic core yarn unit includes multiple strands of parallel nylon elastic core yarn, and the abrasion-resistant interlacing unit includes abrasion-resistant nylon multifilament interlaced and wound around the outer periphery of the multiple strands of the nylon elastic core yarn.

[0007] Preferably, in the elastic core filament unit, the number of nylon elastic core filaments is 2-5, and the diameter of a single nylon elastic core filament is 0.12-0.15mm.

[0008] Preferably, the multiple nylon elastic core filaments are in a parallel stranded state, with a spacing of 0.05-0.08 mm.

[0009] Preferably, the nylon elastic core yarn is a PA6 / PU composite elastic yarn.

[0010] Preferably, in the wear-resistant interlacing unit, the number of wear-resistant nylon multifilaments is 12-16, and the fineness of the single filament of the wear-resistant nylon multifilament is 1.5-2 dtex.

[0011] Preferably, the wear-resistant nylon multifilament is nylon 66 multifilament, and the relative molecular mass of nylon 66 multifilament is 25,000-30,000.

[0012] The technical solution of this utility model has the following beneficial effects: This utility model presents a functional composite nylon yarn that, based on the synergistic improvement of yarn elasticity and abrasion resistance, further enhances the structural stability of the yarn through structural design, thereby meeting the usage requirements of sports textiles and apparel, and achieving high elasticity, abrasion resistance, stable performance, and long service life.

[0013] (1) Excellent synergy between elasticity and abrasion resistance: The elastic core yarn unit ensures that the yarn can achieve a breaking elongation of ≥300% and an elastic recovery rate of ≥95%, meeting the stretching requirements of sports scenarios; while the outer abrasion-resistant interlacing unit can make the yarn abrasion resistant for ≥800 times and a breaking strength of ≥6.0cN / dtex, thus achieving high performance that balances elasticity and abrasion resistance.

[0014] (2) Stable structure: Through the interlacing process of a specific twist of 800-1000 twists / m and a winding density of 20-25 turns / cm, the outer layer and the core wire form an integrated structure. There is no separation phenomenon during the stretching process. After long-term use, the elastic recovery rate decreases by ≤5% and the wear resistance decreases by ≤8%.

[0015] (3) Strong adaptability: The yarn has a moderate overall fineness and an overall diameter of about 0.35-0.42mm, which can meet the weaving needs of various sports textile products such as sportswear, sports socks, and sports protective gear. There is no yarn breakage or pilling during the weaving process, and the processing performance is excellent. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the cross-sectional structure of the functional composite nylon yarn in Example 1; Figure 2 This is a schematic diagram of the longitudinal cross-sectional structure of the functional composite nylon yarn in Example 1.

[0017] Figure reference numerals: 1-elastic core yarn unit, 11-first nylon elastic core yarn, 12-second nylon elastic core yarn, 13-elastic warp yarn, 2-abrasion-resistant interlacing unit, 21-abrasion-resistant nylon multifilament, 22-interlacing joint. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below. Where specific conditions are not specified in the embodiments, they are performed under conventional conditions or conditions recommended by the manufacturer; where the manufacturers of instruments, equipment, reagents, or raw materials are not specified, they are all conventional products that can be purchased commercially.

[0019] The following is a detailed embodiment with reference to the accompanying drawings.

[0020] This invention provides a functional composite nylon yarn, which adopts a multi-core interlaced composite structure, namely, an elastic core filament unit made of multiple nylon elastic core filaments and an abrasion-resistant interlaced unit covering the outer layer of the elastic core filament unit. The abrasion-resistant interlaced unit mainly includes abrasion-resistant nylon multifilaments, which are formed by multi-core plying and outer layer interlacing processes. This can effectively balance the performance characteristics of high elasticity and high abrasion resistance, and the different filaments are stably bonded together, which can maintain good structural and morphological stability in subsequent processing and use.

[0021] In this invention, the multiple nylon elastic core filaments can be selected from PA6 / PU composite elastic yarns, wherein the mass ratio of PA6 to PU can be controlled at 7:3-8:2, and the diameter of a single nylon elastic core filament is controlled at 0.12-0.15mm. According to the method of GB / T3916-2013 "Determination of breaking strength and elongation at break of single yarn in packaged textiles", the elongation at break of the elastic core filament unit is ≥300%, and the elastic recovery rate is ≥95%. During the manufacturing process, the multiple nylon elastic core filaments are arranged in parallel strands with a spacing of 0.05-0.08mm, which serves as the elastic support for this functional composite nylon yarn, ensuring that the yarn can quickly rebound after subsequent processing or stretching.

[0022] In this invention, the outer layer of abrasion-resistant nylon multifilament can be made of nylon 66 multifilament, with its relative molecular mass controlled at 25,000-30,000, single filament fineness at 1.5-2 dtex, and the number of multifilaments at 12-16. During the preparation process, the abrasion-resistant nylon multifilament is interwoven and wound around the outer periphery of the nylon elastic core filament using a doubling twister at a Z-direction twist of 800-1000 twists / m, forming an integrated composite structure with a dense outer layer. The interweaving density is 20-25 turns / cm to ensure that the abrasion-resistant nylon multifilament completely covers the elastic core filament unit, while avoiding excessive yarn stiffness due to overly dense winding, which would affect textile processing performance.

[0023] Furthermore, the axes of the multiple nylon elastic core filaments in the elastic core filament unit are parallel to the overall axis of the wear-resistant nylon multifilaments in the wear-resistant interlacing unit. Moreover, those skilled in the art can thread elastic warp threads through the central axis of the multiple nylon elastic core filaments to ensure that the two elastic filaments deform synchronously during stretching and avoid local stress concentration.

[0024] This invention relates to a functional composite nylon yarn. The elastic core unit serves as the core support, utilizing the high elasticity and high recovery rate of PA6 / PU composite elastic yarn to ensure rapid rebound after stretching during activities such as limb bending and fabric deformation, preventing fabric loosening and deformation. The outer abrasion-resistant interwoven unit uses high molecular weight nylon 66 multifilaments and a dense interwoven structure. The higher the molecular weight of the nylon 66 multifilaments, the better the abrasion resistance of the nylon fibers. This isolates the elastic core unit from direct friction with the external environment while withstanding frictional forces from sports equipment or clothing during exercise, reducing wear on the elastic core. Furthermore, the two are interwoven with a specific twist and winding density to form an integrated structure, preventing separation of the outer layer from the core during stretching and ensuring structural stability and long-term performance. According to GB / T21196.2-2007 "Textiles - Martindale Method for Determination of Abrasion Resistance of Fabrics", the yarn has an abrasion resistance of ≥800 cycles and a breaking strength of ≥6.0 cN / dtex, effectively meeting the high-intensity usage requirements of sports and other applications.

[0025] Example 1;

[0026] (1) Select PA6 / PU composite elastic yarn with model ECO-ELASTICPA6 / PU and diameter of 0.12mm. Take two PA6 / PU composite elastic yarns, place them in parallel, and sandwich an elastic warp in the middle. Adjust the spacing to 0.05mm by using a yarn twisting machine to make two stranded elastic core yarn units.

[0027] Using the method of GB / T3916-2013 "Determination of breaking strength and elongation at break of single yarn in packaged textiles", the elongation at break of the above-mentioned elastic core yarn unit was determined to be 320%, and the elastic recovery rate was 96%.

[0028] (2) Twelve nylon 66 multifilaments with a relative molecular mass of approximately 25,000 and a single filament fineness of 1.5 dtex are selected. Using a doubling machine with a Z-direction twist of 800 twists / m, the multifilaments are interwoven and wound around the outside of the elastic core yarn unit. The winding density is controlled at 20 turns / cm, forming a wear-resistant interwoven unit on the outer surface of the elastic core yarn unit, which is the functional composite nylon yarn. Figure 1 and Figure 2 As shown, its overall diameter is approximately 0.35 mm.

[0029] Using the method of GB / T21196.2-2007 "Textiles - Martindale Method for Determination of Abrasion Resistance of Fabrics", the abrasion resistance of the above-mentioned functional composite nylon yarn is 820 cycles; using the method of GB / T3916-2013 "Textiles - Determination of Breaking Strength and Elongation at Break of Single Yarn in Package", the breaking strength of the above-mentioned functional composite nylon yarn is 6.1 cN / dtex.

[0030] Example 2;

[0031] (1) Select PA6 / PU composite elastic yarn with model ECO-ELASTICPA6 / PU and diameter of 0.15mm. Take three PA6 / PU composite elastic yarns, place them in parallel, and sandwich an elastic warp in the middle. Adjust the spacing to 0.08mm by using a yarn twisting machine to make three parallel elastic core yarn units.

[0032] Using the method of GB / T3916-2013 "Determination of breaking strength and elongation at break of single yarn in packaged textiles", the elongation at break of the above-mentioned elastic core yarn unit was determined to be 310% and the elastic recovery rate was 95%.

[0033] (2) Select 16 nylon 66 multifilaments with a relative molecular mass of about 30,000 and a single filament fineness of 2dtex. Set the Z-direction twist to 1000 twists / m using a twister and interweave the multifilaments around the outside of the elastic core filament unit. Control the winding density to 25 turns / cm. A wear-resistant interwoven unit is formed on the outer surface of the elastic core filament unit, which is the functional composite nylon yarn with an overall diameter of about 0.41mm.

[0034] Using the method of GB / T21196.2-2007 "Textiles - Martindale Method for Determination of Abrasion Resistance of Fabrics", the abrasion resistance of the above-mentioned functional composite nylon yarn is 850 cycles; using the method of GB / T3916-2013 "Textiles - Determination of Breaking Strength and Elongation at Break of Single Yarn in Package", the breaking strength of the above-mentioned functional composite nylon yarn is 6.3 cN / dtex.

[0035] Example 3;

[0036] (1) Select PA6 / PU composite elastic yarn with model ECO-ELASTICPA6 / PU and diameter of 0.13mm. Take three PA6 / PU composite elastic yarns, place them in parallel, and sandwich an elastic warp in the middle. Adjust the spacing to 0.06mm by using a yarn twisting machine to make three parallel elastic core yarn units.

[0037] Using the method of GB / T3916-2013 "Determination of breaking strength and elongation at break of single yarn in packaged textiles", the elongation at break of the above-mentioned elastic core yarn unit was determined to be 315%, and the elastic recovery rate was 95.5%.

[0038] (2) Select 14 nylon 66 multifilaments with a relative molecular mass of about 28,000 and a single filament fineness of 1.8 dtex. Set the Z-direction twist to 900 twists / m using a double twister and interweave the multifilaments around the outside of the elastic core filament unit. Control the winding density to 22 turns / cm. A wear-resistant interwoven unit is formed on the outer surface of the elastic core filament unit, which is the functional composite nylon yarn with an overall diameter of about 0.42 mm.

[0039] Using the method of GB / T21196.2-2007 "Textiles - Martindale Method for Determination of Abrasion Resistance of Fabrics", the abrasion resistance of the above-mentioned functional composite nylon yarn is 835 cycles; using the method of GB / T3916-2013 "Textiles - Determination of Breaking Strength and Elongation at Break of Single Yarn in Package", the breaking strength of the above-mentioned functional composite nylon yarn is 6.2 cN / dtex.

[0040] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A functional composite nylon yarn, characterized by, It includes an elastic core filament unit and an abrasion-resistant interlacing unit covering the outer periphery of the elastic core filament unit. The elastic core filament unit includes multiple strands of parallel nylon elastic core filaments, and the abrasion-resistant interlacing unit includes abrasion-resistant nylon multifilaments interlaced and wound around the outer periphery of the multiple nylon elastic core filaments.

2. The functional composite nylon yarn according to claim 1, wherein, In the elastic core filament unit, there are 2-5 nylon elastic core filaments, and the diameter of a single nylon elastic core filament is 0.12-0.15mm.

3. The functional composite nylon yarn according to claim 1, wherein, Multiple nylon elastic core filaments are in a parallel stranded state, with a spacing of 0.05-0.08mm.

4. The functional composite nylon yarn according to any one of claims 1 to 3, characterized in that, The nylon elastic core yarn is a PA6 / PU composite elastic yarn.

5. The functional composite nylon yarn according to claim 1, wherein, In the wear-resistant interlacing unit, the number of wear-resistant nylon multifilaments is 12-16, and the fineness of the single filament of the wear-resistant nylon multifilament is 1.5-2 dtex.

6. The functional composite nylon yarn according to claim 1 or 5, wherein, The wear-resistant nylon multifilament is nylon 66 multifilament, and the relative molecular mass of nylon 66 multifilament is 25,000-30,000.

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