Polyester elastic yarn

Abstract

The utility model discloses a dacron elastic filament, including elastic core yarn and the wrapping layer of wrapping in the outside of elastic core yarn, and the wrapping layer includes first wrapping silk and second wrapping silk, first wrapping silk and second wrapping silk are set up in opposite direction, first wrapping silk is porous hollow dacron filament, and the cross section of porous hollow dacron filament is flat as a whole, including a plurality of connected hollow fiber units, the recessed portion has between the both sides of the connecting portion of adjacent two hollow fiber units, hollow fiber unit includes fiber entity and hollow part, second wrapping silk is dacron nylon mixed filament, and elastic core yarn includes spandex filament. The core yarn including spandex filament used can provide good elasticity, and the hollow part in the porous hollow dacron filament used can store static air, thereby improving the warm -keeping effect. And the recessed portion between two hollow fiber units can provide good wet -effect through capillary effect. The dacron nylon mixed filament can provide wear -resisting effect.

Description

Technical Field

[0001] This utility model relates to a polyester elastic yarn, belonging to the field of elastic filament technology. Background Technology

[0002] Elastic yarn is one of the raw materials for making elastic fabrics. Existing polyester elastic yarn uses a parallel bicomponent structure composed of PTT and PET. This structure utilizes the different shrinkage rates of the two materials to create a three-dimensional crimp, resulting in a certain degree of elasticity. However, the elasticity of this type of parallel bicomponent filament is limited, and it is typically used in the weaving of thin, elastic fabrics. For thicker, woven thermal fabrics used in autumn and winter, a lack of elasticity would create a restrictive feeling when worn. Therefore, good elasticity is essential for these thermal fabrics. How to produce a polyester elastic yarn with excellent thermal insulation properties has become a problem to be solved. Utility Model Content

[0003] The purpose of this invention is to provide a polyester elastic yarn that uses a core yarn and a wrapping yarn structure, which can improve the fineness of the yarn and make it suitable for weaving relatively thick fabrics. Furthermore, it uses a long filament with good elasticity as the core yarn, which has high elasticity.

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows: The present invention relates to a polyester elastic yarn, comprising an elastic core yarn and a wrapping layer wrapped around the outside of the elastic core yarn, wherein the wrapping layer comprises a first wrapping yarn and a second wrapping yarn; the first wrapping yarn and the second wrapping yarn are arranged in opposite directions; The first wrapping yarn is a porous hollow polyester filament, the cross-section of which is generally flat and includes multiple connected hollow fiber units; the connecting part between two adjacent hollow fiber units has concave portions on both sides; the hollow fiber unit includes a fiber body and a hollow part; The second wrapping yarn is a polyester-nylon blended yarn; The elastic core yarn comprises spandex filaments.

[0005] Based on the above scheme and as a preferred embodiment of the above scheme: the number of hollow fiber units is not less than 3.

[0006] Based on the above scheme and as a preferred embodiment of the above scheme: the polyester-nylon blended yarn includes parallel fine denier polyester filaments and fine denier nylon 6 filaments, and network dots are arranged along the length direction.

[0007] Based on the above scheme and as a preferred embodiment of the above scheme: the fine denier polyester filament is a polyester POY filament with a fineness of 50-100D / 24-36F, and the fine denier nylon 6 filament has a fineness of 35-60D / 48-96F.

[0008] Based on the above scheme and as a preferred embodiment of the above scheme: a covering fiber layer is provided between the elastic core yarn and the wrapping layer, and the fiber used in the covering fiber layer is antibacterial polyester fiber.

[0009] Based on the above scheme and as a preferred embodiment of the above scheme: the elastic core yarn 1 includes PTT high-elastic DTY filaments and spandex filaments twisted together.

[0010] Based on the above scheme and as a preferred embodiment of the above scheme: the surface of the PTT high-elastic DTY filament is coated with a nano zinc antibacterial agent.

[0011] The beneficial effects of this utility model are as follows: The polyester elastic yarn involved in this utility model uses a core yarn including spandex filaments to provide good elasticity. The hollow portion of the porous hollow polyester filaments can store still air, thereby improving the warmth retention effect. Furthermore, the recessed portion between two hollow fiber units can provide good moisture wicking through capillary effect. The nylon in the polyester-nylon blended yarn can provide abrasion resistance. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the polyester elastic yarn involved in Example 1; Figure 2 This is a schematic diagram of the cross-sectional structure of the porous hollow polyester filament involved in Example 1; Figure 3 This is a schematic diagram of the structure of the spinneret for the production of porous hollow polyester filament; Figure 4 This is a schematic diagram of the structure of the polyester elastic yarn involved in Example 2. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0014] Example 1 Combination Figures 1 to 3 This embodiment will be described in detail. The polyester elastic yarn involved in this embodiment includes an elastic core yarn 1 and a wrapping layer 2 wrapped around the outside of the elastic core yarn. The wrapping layer 2 includes a first wrapping yarn 20 and a second wrapping yarn 30; the first wrapping yarn 20 and the second wrapping yarn 30 are arranged in opposite directions. The elastic core yarn 1 includes spandex filaments, and the spandex filaments used can provide good elasticity and resilience to the polyester elastic yarn.

[0015] The first wrapping yarn 20 is a porous hollow polyester filament. The cross-section of the porous hollow polyester filament is generally flat, including multiple interconnected hollow fiber units 21. The connecting portion between two adjacent hollow fiber units 21 has concave portions 22 on both sides. Each hollow fiber unit 21 includes a fiber body 211 and a hollow portion 212. Furthermore, the porous hollow polyester filament uses matte PET. Matte PET refers to the addition of a matting agent when preparing PET melt from PET chips, giving the prepared fiber a matte effect. The matting agent used is titanium dioxide. The matte PET used can effectively improve the fiber's anti-permeability, and titanium dioxide has a UV-resistant effect, thus giving the polyester elastic yarn involved in this embodiment an UV-resistant effect. The hollow portion 212 in the hollow fiber unit 21 can effectively improve the fiber's warmth retention, thus giving the fabric prepared from this fiber a better warmth retention effect. The spinneret 30 used is as follows... Figure 3 As shown.

[0016] Multiple interconnected hollow fiber units 21, with concave portions 22 on both sides of adjacent hollow fiber units 21, create an uneven surface structure resembling a caterpillar. Fabrics made from polyester fibers with this uneven and flat structure exhibit good uprightness after napping and a full hand feel.

[0017] Furthermore, the number of hollow fiber units 21 is not less than three. Specifically, in this embodiment, the number of hollow fiber units 21 is four. And the ratio of the diameter of the hollow portion 212 to the diameter of the fiber entity 211 is 0.6:1.

[0018] The second wrapping yarn 30 is a polyester-nylon blended yarn; the polyester-nylon blended yarn includes parallel fine denier polyester filaments and fine denier nylon 6 filaments, and network dots are arranged along the length direction. The fine denier polyester filaments are 50-100D / 24-36F polyester POY filaments, and the fine denier nylon 6 filaments are 35-60D / 48-96F. The number of network dots is 40 per meter. The network dots are fixed to the parallel fine denier polyester filaments and fine denier nylon 6 filaments using high-speed hot air through network nozzles.

[0019] Example 2 Combination Figure 4 This embodiment will be described in detail below. The polyester elastic yarn involved in this embodiment differs from that in Embodiment 1 in that a covering fiber layer 3 is provided between the elastic core yarn 1 and the wrapping layer 2, and the fiber used in the covering fiber layer 3 is antibacterial polyester fiber.

[0020] Furthermore, the elastic core yarn 1 comprises PTT high-elastic DTY filaments and spandex filaments twisted together.

[0021] Furthermore, the surface of the PTT high-elastic DTY filament is coated with a nano zinc antibacterial agent.

[0022] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A polyester elastic yarn, characterized in that, It includes an elastic core yarn (1) and a wrapping layer (2) wrapped around the outside of the elastic core yarn. The wrapping layer (2) includes a first wrapping yarn (20) and a second wrapping yarn (30). The first wrapping yarn (20) and the second wrapping yarn (30) are arranged in opposite directions. The first wrapping yarn (20) is a porous hollow polyester filament. The cross-section of the porous hollow polyester filament is generally flat and includes multiple connected hollow fiber units (21). The two sides of the connection between two adjacent hollow fiber units (21) have concave portions (22). The hollow fiber unit (21) includes a fiber body (211) and a hollow portion (212). The second wrapping yarn (30) is a polyester-nylon blended yarn; The elastic core yarn (1) includes spandex filaments.

2. The polyester elastic yarn according to claim 1, characterized in that, The number of hollow fiber units (21) is not less than 3.

3. The polyester elastic yarn according to claim 1, characterized in that, The polyester-nylon blended yarn includes parallel fine denier polyester filaments and fine denier nylon 6 filaments, and network dots are arranged along the length direction.

4. The polyester elastic yarn according to claim 3, characterized in that, The fine denier polyester filament is a polyester POY filament with a fineness of 50-100D / 24-36F, and the fine denier nylon 6 filament has a fineness of 35-60D / 48-96F.

5. The polyester elastic yarn according to claim 1, characterized in that, A covering fiber layer (3) is provided between the elastic core yarn (1) and the wrapping layer (2), and the fiber used in the covering fiber layer (3) is antibacterial polyester fiber.

6. The polyester elastic yarn according to claim 1, characterized in that, The elastic core yarn (1) includes PTT high-elastic DTY filaments and spandex filaments twisted together.

7. A polyester elastic yarn according to claim 6, characterized in that, The surface of the PTT high-elastic DTY filament is coated with a nano zinc antibacterial agent.

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