An elastic fabric

Abstract

This invention discloses an elastic fabric with a striped weave. The elastic fabric has a striped portion and a ground portion. The striped portion exists in at least one direction, either warp or weft, and the fibers forming the striped portion in at least one direction are high-elastic fibers, while the fibers forming the ground portion are all low-elastic fibers. The elongation attenuation of the low-elastic fibers is 10.0% to 20.0%, and the elongation attenuation of the high-elastic fibers is 20.0% to 40.0% greater than that of the low-elastic fibers. This invention is an elastic fabric with a striped weave formed from high-elastic fibers and low-elastic fibers with a difference in elongation attenuation. The fabric surface has a striped or grid-like uneven structure, providing good breathability and minimizing the contact area with the skin.

Description

Technical Field

[0001] This invention relates to the field of textiles, specifically to a fabric, and more particularly to an elastic fabric. Background Technology

[0002] As people's living standards improve, their demands for fabric comfort are also increasing, with elasticity being a crucial indicator of fabric comfort. Elastic fabrics are widely used in various garments, thus the development of elastic fibers has attracted considerable attention.

[0003] Currently, there are many elastic fabrics on the market, most of which use yarns with added spandex to achieve the elasticity of the fabric. For example, Chinese patent document CN107574536A discloses a method for manufacturing elastic fabric, in which the warp and weft yarns are made of wrapped yarn with fine denier microfiber nylon filaments as outer fibers and Lycra as core yarn and are highly twisted. Although the fabric has good elasticity, the production process of spandex is complicated, causes serious pollution, and has high usage costs.

[0004] In addition, some elastic fabrics use spandex-free elastic yarns, such as the bubble fabric based on a bio-based spandex-free elastic material disclosed in Chinese patent document CN218232708U. The warp and weft yarns of this fabric are both composed of 150D-H400 elastic fiber yarn and 75D-polyester DTY, with a 4:6 ratio of 150D-H400 elastic fiber yarn to 75D-polyester DTY. Although the fabric is elastic, its weight is only 220g / m². 2 The fabric is not thin or light.

[0005] For example, Chinese patent document CN212223226U discloses a foamed fabric in which the warp yarns use S-direction twisted JC100S / 2 combed cotton yarn (non-elastic yarn) and Z-direction twisted T50D / 36FDTY / 2 polyester low-elasticity yarn (elastic yarn), and the weft yarns use P75D / 36F 400T composite elastic fiber yarn. However, while this fabric is elastic, its surface exhibits a raised or concave structure, and it uses double warp beam weaving, making the weaving process complex. Summary of the Invention

[0006] The purpose of this invention is to provide a breathable, comfortable elastic fabric with a textured surface.

[0007] Another object of the present invention is to provide a good, breathable, comfortable, and lightweight elastic fabric with a textured surface.

[0008] The elastic fabric of the present invention adopts a striped weave, the elastic fabric having a striped portion and a ground portion, the striped portion existing in at least one direction of warp or weft, and the fibers forming the striped portion in at least one direction are high-elastic fibers, while the fibers forming the ground portion are all low-elastic fibers. The elongation value of the low-elastic fibers is 10.0% to 20.0%, and the elongation value of the high-elastic fibers is 20.0% to 40.0% greater than that of the low-elastic fibers.

[0009] Preferably, the stripes exist in both the warp and weft directions, and the fibers forming the stripes are all highly elastic fibers.

[0010] Preferably, in a complete tissue, the area of ​​the ground region is 1 to 1.7 times the area of ​​the striped region.

[0011] Preferably, in a complete fabric, the number of warp and weft yarn crosses in the ground section is 1.5 to 4 times that in the striped section.

[0012] Preferably, the high-elastic fiber is a polyester bicomponent composite fiber.

[0013] Preferably, the polyester bicomponent composite fiber is a high-viscosity polyethylene terephthalate / low-viscosity polyethylene terephthalate composite fiber, a propylene glycol terephthalate / polyethylene terephthalate composite fiber, or a butylene terephthalate / polyethylene terephthalate composite fiber.

[0014] Preferably, the single filament fineness of the high-elastic fiber is 0.01 to 0.30 dtex.

[0015] Preferably, the elastic elongation value of the elastic fabric in the warp and / or weft directions is 10% or more.

[0016] This invention relates to an elastic fabric with a striped or checkered structure formed by high-elasticity fibers and low-elasticity fibers with different elongation values. The fabric surface has a striped or checkered texture, providing good breathability and minimizing contact area with the skin. Furthermore, this invention uses microfiber, making the fabric lightweight, soft, and comfortable to wear. Detailed Implementation

[0017] The elastic fabric of the present invention is a striped fabric with a ground portion and striped portions. The striped portions exist in at least one direction, either the warp or the weft, and the fibers forming the striped portions in at least one direction are high-elastic fibers. The fibers forming the ground portion are all low-elastic fibers. The elongation value of the low-elastic fibers is 10.0% to 20.0%, and the elongation value of the high-elastic fibers is 20.0% to 40.0% greater than that of the low-elastic fibers.

[0018] The elastic fabric of the present invention uses a striped or checkered structure, which can be a longitudinal striped structure, a transverse striped structure, or a checkered structure, that is, a double structure only in the warp direction, a double structure only in the weft direction, or a double structure in both warp and weft directions. Accordingly, the elastic fabric has a striped section only in the warp direction, a striped section only in the weft direction, or a striped section in both warp and weft directions, as well as a ground section.

[0019] In the elastic fabric of the present invention, the fibers forming the stripes in at least one direction are high-elastic fibers, while the fibers forming the ground portion are all low-elastic fibers. The elongation at break of the low-elastic fibers is 10.0% to 20.0%, and the elongation at break of the high-elastic fibers is 20.0% to 40.0% greater than that of the low-elastic fibers.

[0020] When an elastic fabric has stripes only in the warp or only in the weft direction, the fabric is striped. The fibers forming the stripes are highly elastic fibers, creating contracted warp or weft stripes, thus forming a textured elastic fabric with a striped style that is elastic in both the warp and weft directions. When an elastic fabric has stripes in both the warp and weft directions, the fabric is plaid. The fibers forming the stripes in at least one direction are highly elastic fibers, creating contracted warp, weft, or bidirectional stripes, thus forming a textured elastic fabric with a plaid style that is elastic in the warp, weft, or both directions.

[0021] In this invention, the fibers forming the stripes refer to the fibers in the forming direction. Specifically, the fibers forming the warp stripes are fibers that form the stripes in the warp direction, and the fibers forming the weft stripes are fibers that form the stripes in the weft direction.

[0022] In addition, the fibers forming the ground section are all low-elasticity fibers. Based on the stripe elasticity in at least one direction of the warp or weft provided by high-elasticity fibers, it also has the moderate ground elasticity provided by low-elasticity fibers. The overall style of the fabric shows a textured style where the stripe elasticity is greater than the ground elasticity in at least one direction of the warp or weft.

[0023] Preferably, the elastic fabric of the present invention has a warp and weft bidirectional stripe section, and the fibers forming the stripe section are all high elastic fibers, making it a checkered-style elastic fabric with warp and weft bidirectional elasticity.

[0024] Preferably, in a complete weave, the area of ​​the ground portion is 1 to 1.7 times the area of ​​the striped portion. If the ground portion area is more than 1.7 times the area of ​​the striped portion, the fabric tends to be smooth; if the ground portion area is less than 1 times the area of ​​the striped portion, the fabric tends to be excessively textured, affecting wearing comfort. Preferably, the ground portion area is 1.2 to 1.4 times the area of ​​the striped portion, resulting in the optimal texture of the fabric.

[0025] Preferably, in a complete weave, the number of warp and weft yarn crosses in the ground section is 1.5 to 4 times that in the striped section. Generally, under the same conditions, the fewer the number of warp and weft yarn crosses during the fabric weaving process, the lower the density. If the number of warp and weft yarn crosses in the striped section is designed to be relatively low, the density of the striped section will be relatively lower than that of the ground section during the fabric weaving process. During post-processing, the lower density of the striped section is conducive to fiber shrinkage, making the ground section have an uneven texture and the fabric has a good sense of texture. When the number of warp and weft yarn crosses in the ground section is less than 1.5 times that in the striped section, the density of the striped section is similar to that of the ground section during fabric weaving. During post-processing, the shrinkage of the striped section is not significant, resulting in a smooth fabric. Conversely, when the number of warp and weft yarn crosses in the ground and striped sections is more than 4 times that in the striped section, the density of the striped section is too low compared to the ground section during fabric weaving. During post-processing, the shrinkage of the striped section is excessive, leading to an overly textured fabric and a tendency for decreased pilling and snagging resistance. Ideally, the number of warp and weft yarn crosses in the ground section is 2 to 3 times that in the striped section, resulting in appropriate shrinkage and optimal texture in the fabric.

[0026] The low-elasticity fiber of this invention has a stretch elongation value of 10.0% to 20.0%, while the high-elasticity fiber has a stretch elongation value that is 20.0% to 40.0% higher than that of the low-elasticity fiber. The raw materials for both the low-elasticity and high-elasticity fibers are not particularly limited, as long as they meet the range of stretch elongation values. The high-elasticity fiber is preferably a high-elasticity polyester bicomponent parallel composite fiber, more preferably a high-viscosity polyethylene terephthalate / low-viscosity polyethylene terephthalate composite fiber (high-viscosity PET / low-viscosity PET), a polypropylene terephthalate / polyethylene terephthalate composite fiber (PTT / PET), or a polybutylene terephthalate / polyethylene terephthalate composite fiber (PBT / PET). These polyester bicomponent parallel composite fibers have bicomponent components with different characteristics, exhibit a three-dimensional curled state, and thus exhibit high elasticity with a high stretch elongation. These polyester bicomponent composite fibers can be derived from potentially crimped fibers obtained through direct spinning, or from potentially crimped fibers obtained through post-treatment of island fibers. Using these potentially crimped fibers for weaving yields a greige fabric, which is then post-treated as needed, ultimately exhibiting a three-dimensional crimped state within the fabric, becoming a high-elastic fiber with high elongation and stretch.

[0027] Preferably, the high-elastic fiber has a single filament fineness of 0.01–0.30 dtex. When the high-elastic fiber originates from potentially crimped fibers obtained through post-processing of island-island fibers, the single filament fineness is relatively small. The smaller the single filament fineness, the softer the fabric. This invention preferably uses microfiber, resulting in a lightweight, soft, and comfortable fabric. Preferably, the high-elastic fiber has a single filament fineness of 0.15–0.25 dtex, providing optimal lightweight and softness for the fabric.

[0028] Preferably, the elastic fabric has an elastic elongation value of 10% or more in the warp and / or weft directions. In this invention, the striped portions in the warp and / or weft directions are formed of high-elastic fibers, and the ground portion is formed of low-elastic fibers. The elongation value of the low-elastic fibers is 10.0% to 20.0%, and the elongation value of the high-elastic fibers is 20.0% to 40.0% greater than that of the low-elastic fibers. The amount of high-elastic fibers used is relatively small, and the fabric has an elastic elongation value of 10% or more in at least one direction, either warp or weft.

[0029] If the difference between the elongation and stretch rates of high-elastic fibers and low-elastic fibers is less than 20.0%, the elastic fabric will have a weaker texture, resulting in a larger contact area with the skin and a less refreshing feel. If the difference is greater than 40.0%, the elastic fabric will be too textured, affecting wearing comfort. Ideally, the elongation and stretch rate of high-elastic fibers should be 20.0% to 34.0% higher than that of low-elastic fibers, as this provides the optimal texture, moderate elasticity, and best wearing comfort.

[0030] In the elastic fabric of the present invention, the low elastic fiber is preferably fine denier matte polyester stretch textured yarn (FD DTY), and the fabric can achieve a permeability of more than 85%, with good permeability.

[0031] In the elastic fabric of the present invention, the stretch elasticity of the high-elasticity fiber and the low-elasticity fiber is preferably above 90%, so that the fabric has good resilience.

[0032] The elastic fabric of the present invention is woven using a single warp beam, which is simpler to prepare than a double warp beam fabric.

[0033] The elastic fabric of the present invention can be obtained by the following method:

[0034] (1) Weaving: Determine the application direction of potential shrinkable fibers (which become shrinkable fibers after weaving and are high-elasticity fibers in elastic fabrics) and the ratio of potential shrinkable fiber raw materials to non-potential shrinkable fibers (which become low-elasticity fibers in elastic fabrics after weaving and processing).

[0035] ① Potentially crimped fibers are only used in the warp direction. The warp yarns are designed according to the ratio of potentially crimped fibers to non-potentially crimped fibers, followed by conventional processes such as fabric process design, cutting, warping, sizing, beam bending, heddle threading, and reed threading.

[0036] ② Potentially crimped fibers are only used in the weft direction. The warp yarns are split, warped, sized, spun, and threaded through heddles and reeds, etc., according to conventional processes. The weft yarns are weft-beating and weaving according to the ratio of potentially crimped fibers to non-potentially crimped fibers.

[0037] ③ Potential shrinkage is applied to both the warp and weft directions. The warp yarns are designed according to the ratio of potential shrinkage to non-potential shrinkage fibers, followed by conventional processes such as fabric process sheet design, cutting, warping, sizing, beam bending, and heddle and reed threading. The weft yarns are weft-beating woven according to the ratio of potential shrinkage to non-potential shrinkage fibers.

[0038] (2) Finishing after dyeing: Greige fabric seam allowance → scouring → weight reduction (as needed) → pre-shrinking → pre-setting → dyeing → drying → resin setting

[0039] In the reduction process, the reduction rate is 5% to 18%, preferably 8% to 12%. If the reduction rate is less than 5%, the fabric will feel rough and the yarn used will not be completely reduced. If the reduction rate is greater than 18%, the yarn strength of the fabric will be reduced and the fabric will have poor tear strength. Garments made from this fabric will be easy to break.

[0040] The purpose of resin setting is to improve the tear strength of the fabric and give it a certain degree of water resistance, thereby improving the quality of the finished garment. The resin formulation contains 0.1%–0.5% penetrant, 4%–8% waterproofing agent, 0.8%–2% tear enhancer, and 0.1%–0.5% crosslinking agent. With this ratio, the fabric's tear strength is above 7N.

[0041] In this invention, the potentially crimped fibers used in weaving can be high-viscosity PET / low-viscosity PET, PTT / PET, or PBT / PET parallel composite fibers obtained by direct spinning, or island-type composite fibers, where the island components are high-viscosity PET / low-viscosity PET, PTT / PET, or PBT / PET. During the finishing process of the greige fabric, the potentially crimped fibers transform into a three-dimensional crimped fiber state, i.e., a high-elastic fiber with high elongation, resulting in an elastic fabric.

[0042] In the weaving process of the elastic fabric of the present invention, potentially shrinkable fibers and non-potentially shrinkable fibers are used simultaneously. After finishing, high-shrinkage fibers and low-shrinkage fibers are obtained respectively, that is, high-elasticity fibers and low-elasticity fibers with a difference in stretching and elongation, thus obtaining the elastic fabric of the present invention.

[0043] The elastic fabric of this invention, 100cm2 The height of the concave and convex parts (i.e., the vertical distance between the highest point of the convex part on one side of the elastic fabric and the highest point of the convex part on the other side of the elastic fabric) ranges from 1mm to 2mm, and is 100cm. 2 The concave-convex bending angle ranges from 10° to 30°, the fabric has a moderate concave-convex feel, and the fabric has a small contact area with the skin, making it comfortable to wear.

[0044] The elastic fabric of this invention has a weight of 45 g / m². 2 ~100g / m 2 The fabric is lightweight and comfortable to wear.

[0045] The elastic fabric of this invention can be used to make spring and summer shirts, coats, etc.

[0046] The testing methods for each parameter involved in this invention are as follows:

[0047] (1) Elongation at break (%) and modulus of elasticity at break (%)

[0048] The test was conducted according to standard JIS L 1013:2021 8.11C method.

[0049] A higher elongation value indicates that the yarn has a greater elongation and better elasticity; a higher elasticity value indicates that the yarn has a greater elasticity and better elastic recovery.

[0050] The specific testing steps are as follows:

[0051] a. Sampling: Warp and weft fibers (stripes and ground) are extracted from the fabric to be tested as yarns;

[0052] b. Apply an initial load (0.176 mN / tex, 30 s), measure the length of the yarn to be tested, and mark it as L0;

[0053] c. Remove the initial load, apply a constant load (8.82 mN / tex, 30 s), measure the length of the yarn to be tested, and mark it as L1;

[0054] d. After removing the constant load and holding for 2 minutes, apply an initial load (0.176 mN / tex, 30 s), measure the length of the yarn to be tested, and mark it as L2;

[0055] The elongation rate is calculated using Formula 1, and the elastic modulus is calculated using Formula 2.

[0056]

[0057] Following the steps above, each type of yarn to be tested is measured 10 times, and the average value is recorded as the elongation rate and elasticity rate of each type of yarn to be tested.

[0058] (2) In a complete weave, the range of the ratio of the ground area to the striped area, and the range of the ratio of the number of warp and weft yarn intersections in the ground area to the number of warp and weft yarn intersections in the striped area:

[0059] The testing steps are as follows:

[0060] a. Place the fabric to be tested in the digital microscope testing area;

[0061] b. Using a VHX-6000 digital microscope to image and photograph, measure the area of ​​the ground and the area of ​​the stripes in each complete tissue, and mark the number of warp and weft yarn crossings in the ground and the number of warp and weft yarn crossings in the stripes of each complete tissue;

[0062] c. Calculate the ratio of the area of ​​the ground region to the area of ​​the striped region in each complete weave, and the ratio of the number of warp and weft yarn crossings to the number of warp and weft yarn crossings in the striped region.

[0063] (3) Identification of fiber raw materials

[0064] Identification standard: FZ / T 01057 Test methods for identification of textile fibers.

[0065] (4) Fiber monofilament fineness

[0066] Test method: The cross-section of the yarn was photographed using a VHX-6000 digital microscope and the fineness of the single filament was measured.

[0067] (5) Fabric elasticity

[0068] The test was conducted according to standard JIS L 1096.2010, constant elongation force (8.16.3) A method.

[0069] The higher the value, the better the fabric elasticity.

[0070] (6) Impermeability

[0071] The test was conducted in accordance with standard JIS L1923:2017 (Mechanical Method B).

[0072] The higher the value, the better the impermeability.

[0073] (7) 100cm 2 The height of the concave and convex parts (i.e., the vertical distance between the highest point of the convex part on one side of the elastic fabric and the highest point of the convex part on the other side of the elastic fabric).

[0074] Height was measured and height difference calculated using a VHX-6000 digital microscope with 3D imaging and photographs. The fabric was taken under tension-free conditions and contained at least 30 complete tissues.

[0075] (8) Measurement of the buckling angle of the fabric surface in an arc shape

[0076] The sample is cut perpendicular to the desired measurement direction, and the cross-section is photographed using a scanning electron microscope (SEM) to measure the buckling angle of the arc state. During sample preparation, the sample is in a tension-free, natural state.

[0077] The present invention will be further described below with reference to embodiments and comparative examples, but the scope of protection of the present invention is not limited thereto.

[0078] Example 1

[0079] A lattice weave is used, with 42 dtex / 12F FDY sea-island fiber (which becomes 33 dtex / 288F PBT / PET composite fiber 1 after desea removal) as warp 1 and weft 1, and 33 dtex / 96F polyester FD DTY as warp 2 and weft 2. The ratio of warp 1 to warp 2 and the ratio of weft 1 to weft 2 are both 2:8. The fabric is woven on a water-jet loom with a single warp beam. The fabric undergoes refining → weight reduction → pre-shrinking → pre-setting → dyeing → drying → resin setting, with a weight reduction rate of 10%, ultimately yielding a fabric with a basis weight of 65 g / m². 2 The elastic fabric has warp and weft stripes, and the fibers forming both the warp and weft stripes are high-elastic fibers with a stretch elongation of 35.0%. The fibers forming the ground section are low-elastic fibers with a stretch elongation of 14.0%. Specific parameters are shown in Table 1.

[0080] Example 2

[0081] Using a lattice weave, with 84dtex / 96F PBT / PET DTY composite fiber 2 (ordinary PBT / PET yarn) as warp 1 and weft 1, no weight reduction process is required in the finishing of the greige fabric. The rest is the same as in Example 1, resulting in a basis weight of 71g / m². 2 The elastic fabric has warp and weft stripes, and the fibers forming both the warp and weft stripes are high-elastic fibers with a stretch elongation of 39.0%. The fibers forming the ground section are low-elastic fibers with a stretch elongation of 14.0%. Specific parameters are shown in Table 1.

[0082] Example 3

[0083] Using a horizontal stripe weave, 33 dtex / 96F polyester FD DTY is used as both warp and weft yarn 1, and 42 dtex / 12F FDY sea-island fiber (which becomes 33 dtex / 288F PBT / PET composite fiber 1 after desearing) is used as weft yarn 2. The ratio of weft yarn 2 to weft yarn 1 is 2:8, and the rest is the same as in Example 1. The resulting product has a basis weight of 60 g / m². 2The elastic fabric has a weft stripe section, formed by high-elasticity fibers with a stretch elongation of 35.0%. The ground section is formed by low-elasticity fibers with a stretch elongation of 14.0%. Specific parameters are shown in Table 1.

[0084] Example 4

[0085] The fabric employs a longitudinal stripe weave, using 42 dtex / 12F FDY sea-island fiber (which becomes 33 dtex / 288F PBT / PET composite fiber 1 after desea removal) as warp yarn 1, and 33 dtex / 96F polyester FD DTY as both warp and weft yarns. The ratio of warp yarn 1 to warp yarn 2 is 4:8, and the rest is the same as in Example 1. The resulting fabric has a basis weight of 63 g / m². 2 The elastic fabric has a warp stripe section, formed by high-elasticity fibers with a stretch elongation of 35.0%. The weft stripe section is formed by low-elasticity fibers with a stretch elongation of 14.0%. Specific parameters are shown in Table 1.

[0086] Comparative Example 1

[0087] A lattice weave was used, with 42 dtex / 12F FDY sea-island fiber (which becomes 33 dtex / 288F PBT / PET composite fiber 1 after desearing) as warp 1 and weft 1, and 70 dtex / 48F polyester FDY as warp 2 and weft 2. The rest was the same as in Example 1, resulting in a basis weight of 73 g / m². 2 The elastic fabric has warp and weft stripes. The fibers forming both warp and weft stripes are high-elastic fibers with a stretch elongation of 35.0%. The fibers forming the ground section are low-elastic fibers with a stretch elongation of 0.5%. Specific parameters are shown in Table 2.

[0088] Comparative Example 2

[0089] A lattice weave was used, with 40 dtex / 168F PBT / PET composite fiber 3 as warp 1 and weft 1, and 63 dtex / 72F polyester FD DTY as warp 2 and weft 2. No weight reduction process was required during the finishing of the greige fabric; the rest was the same as in Example 1, resulting in a basis weight of 68 g / m². 2 The elastic fabric has warp and weft stripes. The fibers forming both warp and weft stripes are high-elastic fibers with a stretch elongation of 25.0%. The fibers forming the ground section are low-elastic fibers with a stretch elongation of 13.0%. Specific parameters are shown in Table 2.

[0090] Comparative Example 3

[0091] A lattice weave was used, with 50 dtex / 132F PBT / PET composite fiber 4 as warp 1 and weft 1, and 84 dtex / 72F polyester FD DTY as warp 2 and weft 2. No weight reduction process was required during the finishing of the greige fabric; the rest was the same as in Example 1, resulting in a basis weight of 74 g / m². 2 The elastic fabric has warp stripes and weft stripes. The fibers forming both the warp and weft stripes are high-elastic fibers with a stretch elongation of 75.0%. The fibers forming the ground section are low-elastic fibers with a stretch elongation of 20.0%. Specific parameters are shown in Table 2.

[0092] Comparative Example 4

[0093] A lattice weave was used, with 42 dtex / 12F FDY island-sea fiber (which becomes 33 dtex / 288F PBT / PET composite fiber 1 after desea removal) as warp 1 and weft 1, and 84 dtex / 96F PBT / PET composite fiber 2 as warp 2 and weft 2. The rest was the same as in Example 1, resulting in a basis weight of 72 g / m². 2 The elastic fabric has warp and weft stripes, both formed by highly elastic fibers with a stretch elongation of 35.0%. The ground layer is also formed by highly elastic fibers with a stretch elongation of 39.0%. See Table 2 for specific parameters.

[0094] Table 1:

[0095]

[0096] Table 2:

[0097]

[0098] According to the table above

[0099] (1) As can be seen from Examples 1 and 2, under the same conditions, the single filament fineness of the high-elastic fiber in the former elastic fabric is 0.114 dtex, while that in the latter elastic fabric is 0.875 dtex. Compared with the former, the former fabric has better softness and comfort.

[0100] (2) As can be seen from Examples 1 and 3, under the same conditions, the high-elasticity fibers of the former elastic fabric are used in both the warp and weft stripes, while the high-elasticity fibers of the latter elastic fabric are only used in the weft stripes. Compared with the former, the elastic elongation of the former fabric in both the warp and weft directions is more than 10.0%, and the fabric is elastic in both the warp and weft directions.

[0101] (3) As can be seen from Examples 1 and 4, under the same conditions, the elastic fabric of the former adopts a grid structure, while the elastic fabric of the latter adopts a longitudinal stripe structure. Compared with the former, the elastic elongation of the former fabric in both the warp and weft directions is more than 10.0%, and the fabric has elasticity and good softness in both the warp and weft directions.

[0102] (4) As can be seen from Example 1 and Comparative Example 1, under the same conditions, the stretching elongation value of the low-elasticity fiber of the former elastic fabric is 14.0%, while the stretching elongation value of the low-elasticity fiber of the latter elastic fabric is 0.5%. Compared with the former, the former fabric has better elasticity, better texture, and better comfort.

[0103] (5) As can be seen from Example 1 and Comparative Example 2, under the same conditions, the difference in elongation values ​​between high-elasticity fibers and low-elasticity fibers in the former elastic fabric is 21.0%, while the difference in elongation values ​​between high-elasticity fibers and low-elasticity fibers in the latter elastic fabric is 12.0%. Compared with the former, the former fabric has better elasticity and better texture.

[0104] (6) As can be seen from Example 1 and Comparative Example 3, under the same conditions, the difference in elongation values ​​between high-elasticity fibers and low-elasticity fibers in the former elastic fabric is 21.0%, while the difference in elongation values ​​between high-elasticity fibers and low-elasticity fibers in the latter elastic fabric is 55.0%. Compared with the former, the former fabric has greater elasticity, better texture, and better softness.

[0105] (7) As can be seen from Example 1 and Comparative Example 4, under the same conditions, the stripe-forming fibers of the former elastic fabric are high-elastic fibers with a stretch elongation value of 45.0%, while the ground-forming fibers are low-elastic fibers with a stretch elongation value of 14.0%; the stripe-forming fibers of the latter elastic fabric are high-elastic fibers with a stretch elongation value of 35.0%, while the ground-forming fibers are high-elastic fibers with a stretch elongation value of 38.0%. The latter elastic fabric consists entirely of high-elastic fibers. Compared to the former, the former fabric has a better texture and is more comfortable to wear.

Claims

1. A stretch fabric, employing a check weave, characterized by: The elastic fabric has a striped portion and a ground portion. The striped portion exists in at least one direction, either the warp or the weft, and the fibers forming the striped portion in at least one direction are high-elastic fibers. The fibers forming the ground portion are all low-elastic fibers. The elongation value of the low-elastic fibers is 10.0% to 20.0%, and the elongation value of the high-elastic fibers is 20.0% to 40.0% greater than that of the low-elastic fibers.

2. The elastic fabric of claim 1, wherein: The stripes exist in both the warp and weft directions, and the fibers forming the stripes are all highly elastic fibers.

3. The elastic fabric according to claim 1 or 2, characterized in that: In a complete tissue, the area of ​​the ground region is 1 to 1.7 times the area of ​​the striae region.

4. The elastic fabric according to claim 1 or 2, characterized in that: In a complete fabric, the number of warp and weft yarn crosses in the ground section is 1.5 to 4 times that in the striped section.

5. The elastic fabric according to claim 1 or 2, wherein: The high-elastic fiber is a polyester bicomponent composite fiber.

6. The elastic fabric according to claim 1 or 2, characterized in that: The polyester bicomponent composite fiber is a high-viscosity polyethylene terephthalate / low-viscosity polyethylene terephthalate composite fiber, a propylene glycol terephthalate / polyethylene terephthalate composite fiber, or a butylene terephthalate / polyethylene terephthalate composite fiber.

7. The elastic fabric according to claim 1 or 2, characterized in that: The single filament fineness of the high-elastic fiber is 0.01 to 0.30 dtex.

8. The elastic fabric of claim 1 or 2, wherein: The elastic fabric has an elastic elongation value of 10% or more in the warp and / or weft directions.

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