Four-side stretch fabric

Abstract

The utility model belongs to the technical field of textile fabrics, and particularly relates to a four-side elastic fabric which comprises a surface layer and an inner layer, the surface layer is a twill weave formed by non-elastic yarns, and the inner layer is a smooth weave formed by elastic yarns with a three-dimensional structure. The non-elastic yarns and the elastic yarns are interwoven through a double-faced loom to form the four-side elastic fabric. According to the utility model, the fabric is endowed with tatting stiff and smooth twill texture through the design of a double-faced weave structure and the proportion of special yarns, and meanwhile, the obvious elasticity of four sides is realized in a breakthrough manner; the smooth texture of the inner layer is treated by a sanding process, and has soft touch feeling and fluffy heat preservation property; the hot crimp shrinkage rate and the fineness of the yarn are optimized to synergistically improve the wrinkle resistance and the quick-drying property, and finally the four-way stretch fabric integrating stiff and smooth appearance, elastic function and comfortable touch feeling is formed.

Description

Technical Field

[0001] This utility model belongs to the field of textile fabric technology, specifically relating to a four-way stretch fabric. Background Technology

[0002] In the textile industry, woven fabrics and knitted fabrics are two mainstream products. Woven fabrics form a stable structure through the interlacing of warp and weft yarns, resulting in a crisp texture and good wrinkle resistance, and are widely used in clothing, home textiles, and other fields. Knitted fabrics, on the other hand, are made by interlocking loops, offering excellent elasticity and a soft touch, making them suitable for sportswear and close-fitting garments. However, traditional woven fabrics lack elasticity, leading to insufficient wearing comfort, while knitted fabrics, although elastic, struggle to achieve a three-dimensional and crisp appearance, resulting in a clear functional contradiction between the two.

[0003] In existing technologies, while woven twill fabrics can present a clear texture, their high yarn rigidity and tight weave result in warp and weft elasticity generally below 5%, leading to a feeling of restriction when worn. Conventional knitted twill fabrics, although achieving some elasticity through elastic yarns, lack sufficient bulk and have a rough inner layer with a noticeable cool feel, failing to meet consumers' dual demands for comfort and texture. Furthermore, existing technologies, relying on a single weave structure or yarn type, cannot simultaneously optimize crispness, elasticity, bulk, and feel, resulting in limitations in product performance.

[0004] In summary, this application proposes a four-way stretch fabric to break through the performance boundaries of traditional woven and knitted fabrics and achieve a synergistic improvement in comprehensive advantages such as crisp texture, four-way elasticity, and fluffy feel. Utility Model Content

[0005] The purpose of this invention is to provide a four-way stretch fabric. Through a double-sided structure design and a special yarn ratio, the fabric is given a woven-like crisp twill texture while achieving significant elasticity in all four directions. The inner smooth structure is treated with a brushing process, which combines a soft touch with fluffy warmth. The yarn thermal crimp shrinkage rate and fineness optimization work together to improve wrinkle resistance and quick-drying properties, ultimately forming a four-way stretch fabric that integrates a crisp appearance, elastic function, and comfortable touch.

[0006] The specific technical solution adopted by this utility model is as follows:

[0007] A four-way stretch fabric includes an outer layer and an inner layer. The outer layer is a twill weave made of inelastic yarns, and the inner layer is a smooth weave made of elastic yarns with a three-dimensional structure. The inelastic yarns and elastic yarns are interwoven on a double-sided loom to form the four-way stretch fabric. The fineness ratio of the inelastic yarns to the elastic yarns is 1:(1.5-4).

[0008] Furthermore, the CR of the elastic yarn is greater than 30%.

[0009] Furthermore, the material of the non-elastic yarn is any one of the following: short fiber yarn, filament; the elastic yarn is one of the following: spandex core-spun yarn, spandex coated yarn, spandex machine-spun yarn, spandex air-textured yarn.

[0010] Furthermore, the elastic yarn of the three-dimensional structure has a regular spiral structure or a three-dimensional fluffy structure.

[0011] Furthermore, the inner layer undergoes a napping process.

[0012] The technical effects achieved by this utility model are as follows:

[0013] This invention, through a double-sided structure design and a special yarn ratio, endows the fabric with a crisp twill texture similar to woven fabrics while achieving significant four-way elasticity. The smooth inner layer is treated with a brushing process, combining a soft touch with fluffy warmth. The optimized yarn thermal crimp shrinkage rate and fineness synergistically improve wrinkle resistance and quick-drying properties, ultimately forming a four-way stretch fabric that integrates a crisp appearance, elastic function, and comfortable touch. This effectively solves the technical problems of traditional woven fabrics lacking elasticity and knitted fabrics lacking fluffiness, significantly expanding the application scenarios of textile fabrics. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the interwoven structure of the outer layer 10 and the inner layer 20 of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the surface layer 10 of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the inner layer 20 of this utility model.

[0017] The attached diagram lists the components represented by each number as follows:

[0018] 10. Surface layer; 20. Inner layer. Detailed Implementation

[0019] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0020] like Figures 1 to 3As shown, a four-way stretch fabric includes an outer layer and an inner layer. The outer layer is a twill weave made of non-elastic yarns, and the inner layer is a smooth weave made of elastic yarns with a three-dimensional structure. The non-elastic yarns and elastic yarns are interwoven on a double-sided loom to form the four-way stretch fabric. The fineness ratio of the non-elastic yarns to the elastic yarns is 1:(1.5~4).

[0021] The four-way stretch fabric obtained by adopting the above technical solution not only presents the texture and twill weave style of woven fabric, but also has the elasticity unique to knitted fabric. In addition, the optimized fineness ratio of the front and back sides of the fabric and the fluffiness brought by the structural design not only give it excellent four-way elasticity, but also significantly improve the comfort and warmth of wearing it. At the same time, it also exhibits excellent breathability, moisture absorption and quick-drying properties, ensuring that the wearer can stay dry and comfortable in various environments.

[0022] Furthermore, the specific fineness ratio of the non-elastic yarn and the elastic yarn can be adaptively adjusted within a certain range based on the actual surface twill appearance, and no further limitations are made here.

[0023] It should be noted that the appendix Figure 1 The area within the black box represents the interlacing points where the inner and outer yarns interweave.

[0024] In a preferred embodiment, the CR of the elastic yarn is greater than 30%, where CR refers to the thermal crimp shrinkage rate of the elastic yarn. Here, the elastic yarn with a high CR value can further improve the resilience of the fabric, so that the fabric can quickly return to its original state after multiple stretching, thereby effectively extending the service life of the fabric. Furthermore, by optimizing the thermal crimp shrinkage rate and fineness of the yarn, the wrinkle resistance and quick-drying properties of the fabric are synergistically improved.

[0025] In a preferred embodiment, the non-elastic yarn is made of any one of the following materials: staple fiber yarn, filament, or a composite yarn of filament and staple fiber; the elastic yarn is made of one of the following yarns: spandex core-spun, spandex-covered, spandex machine-spun, or spandex air-textured yarn. In this embodiment, the non-elastic yarn is preferably cotton fiber yarn, and the elastic yarn is preferably spandex core-spun. Cotton fiber yarn has good moisture absorption and breathability, making the fabric more comfortable, while spandex core-spun yarn has good elasticity and resilience, which can effectively improve the four-way elasticity of the fabric.

[0026] In a preferred embodiment, the three-dimensional elastic yarn has a regular spiral structure or a three-dimensional fluffy structure. In this embodiment, the elastic yarn is preferably a regular spiral structure. The regular spiral structure makes the elastic yarn more evenly distributed in the fabric, thereby improving the overall elasticity and stability of the fabric.

[0027] In a preferred embodiment, the bottom of the inner layer 20 is treated with a napping process. The napping process can form a fine nap on the bottom surface of the inner layer, which can provide a softer touch when the fabric comes into contact with the skin, and can also improve the warmth and fluffiness of the fabric, preventing the skin from feeling cold.

[0028] In one specific embodiment, 40s cotton fiber yarn is selected as the outer layer yarn and 90D spandex core-spun yarn (CR value 35%) as the inner layer yarn. A double-sided fabric with a 2 / 1 twill outer layer and a plain weave inner layer is formed using a 32-needle double-sided circular knitting machine. After pre-setting and stabilizing the width at 190℃, it undergoes desizing, scouring, and bleaching pretreatments. Then, a layered dyeing process is used, dyeing cotton with reactive dyes at 70℃ and polyester with disperse dyes at 130℃. In the finishing stage, it undergoes stretching and setting at 160℃, combined with a carbon brushing process (brushing depth 0.1-0.2mm) to enhance the softness and fluffiness of the inner layer. The final product combines the texture of a woven twill weave with four-way elasticity (18% elastic recovery rate in the warp and 20% in the weft), and a fluffiness of 2.5cm. 3 / g functional fabrics.

[0029] Test case

[0030] Test fabrics were prepared using the four-way stretch fabric described in the examples, and the resilience characteristics of the test fabrics were tested according to GB / T6505-2017 Test Method for Heat Shrinkage Rate of Chemical Fiber Filaments. Specifically:

[0031] 1. Test Sample

[0032] Sample source: The four-way stretch fabric prepared in the examples (the outer layer is a twill weave of 40s cotton fiber yarn, and the inner layer is a smooth weave of 90D spandex core-spun yarn, which has been treated with a napping process).

[0033] Sample specifications: Cut into 10 rectangular samples (5 in the warp and 5 in the weft), each measuring 100mm × 100mm. The edges of the samples should be flat and free of loose yarn.

[0034] Pretreatment: Place the sample in a standard environment (temperature 20±2℃, relative humidity 65±5%) for 24 hours to equilibrate.

[0035] 2. Test equipment and parameters

[0036] Test equipment:

[0037] Electronic tensile testing machine (accuracy ±1%, controllable tensile speed), ruler (accuracy 0.5mm), constant temperature and humidity chamber (for sample pretreatment).

[0038] Test parameters:

[0039] Pre-tension: 0.3N;

[0040] Force: 25N;

[0041] Stretch hold time: 30 seconds;

[0042] Rebound time: 60 seconds (natural rebound after tension is released).

[0043] 3. Testing Procedures

[0044] St1: Mark the measurement points. Mark the initial length (L0 = 100 mm) on the longitudinal and latitudinal directions of the sample, respectively. Measure and record the length using a ruler.

[0045] St2: Tensile test. Clamp the specimen on the tensile testing machine, apply pre-tension to ensure that the specimen is flat and wrinkle-free; stretch the specimen to a constant force at a speed of 100 mm / min, hold the constant force for 30 seconds and then read the specimen length L1, and allow the specimen to spring back naturally for 60 seconds.

[0046] St3: Measure the length (L2) after springback, accurate to 0.5 mm.

[0047] St4: Repeated test: Test 4 times in each direction (meridian and latitudinal), and calculate the elastic recovery rate by taking the average value.

[0048] The formula for calculating elastic recovery rate is as follows:

[0049] in:

[0050] Rg represents the elastic recovery rate of the sample, in mm;

[0051] L0 represents the initial length of the sample, in mm;

[0052] L1 represents the length of the specimen after it has been stretched to a constant force, in mm;

[0053] L2 represents the length of the sample after springback, in mm.

[0054] The test results are as follows:

[0055] Testing direction Sample number <![CDATA[L0]]> <![CDATA[L1]]> <![CDATA[L2]]> Rg radial 1 100 120.0 116.4 18％ radial 2 100 120.5 116.9 17.5％ radial 3 100 119.5 115.9 18.5％ radial 4 100 120 116.4 18％ radial average 18％ Latitudinal 1 100 125.0 120.0 20％ Latitudinal 2 100 125.5 120.4 19.5％ Latitudinal 3 100 124.5 119.6 20.5％ Latitudinal 4 100 125.0 120.0 20％ Latitudinal average 20％

[0056] As can be seen from the table above, the four-way stretch fabric prepared in this embodiment has a 3-4 times higher elastic recovery rate under constant force compared to traditional woven fabrics (warp and weft elasticity <5%). By controlling the thermal crimp shrinkage rate (CR > 30%) of the elastic yarn and the yarn fineness ratio, the fabric can have good resilience characteristics.

[0057] The working principle of this utility model is as follows:

[0058] Non-elastic yarn is selected as the outer layer yarn and elastic yarn (CR>30%) as the inner layer yarn. The fabric is woven on a double-sided loom with a twill outer layer and a plain weave inner layer. After the width is stabilized by high-temperature pre-setting, it undergoes desizing, scouring, and bleaching pretreatment in sequence. Then, it undergoes further pretreatment to remove impurities and oil. The fabric is then dyed in layers. In the finishing stage, after stretching and setting, the inner layer is enhanced with a napping process to improve its fluffiness and softness. Finally, a functional fabric with both woven twill texture and four-way elasticity is formed.

[0059] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A four-way stretch fabric, characterized in that: It includes an outer layer (10) and an inner layer (20). The outer layer (10) is a twill weave made of non-elastic yarns, and the inner layer (20) is a smooth weave made of elastic yarns with a three-dimensional structure. The non-elastic yarns and elastic yarns are interwoven by a double-sided loom to form a four-way stretch fabric. The fineness ratio of the non-elastic yarns to the elastic yarns is 1:(1.5~4).

2. The four-way stretch fabric according to claim 1, characterized in that: The CR of the elastic yarn is greater than 30%.

3. The four-way stretch fabric according to claim 1, characterized in that: The non-elastic yarn is made of any one of the following materials: short fiber yarn, filament; the elastic yarn is made of one of the following yarns: spandex core-spun yarn, spandex coated yarn, spandex machine-spun yarn, spandex air-textured yarn.

4. The four-way stretch fabric according to claim 1, characterized in that: The elastic yarn of the three-dimensional structure has a regular spiral structure or a three-dimensional fluffy structure.

5. The four-way stretch fabric according to claim 1, characterized in that: The inner layer (20) is treated with a napping process.

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