High-elasticity fabric with high dimensional stability and preparation method thereof

Abstract

The invention relates to a high-elasticity fabric with high dimensional stability, which comprises a fabric body, a bonding layer and an elastic fabric layer, the fabric body sequentially comprises a skin-friendly layer, an elastic connecting layer and a thermal insulation layer from top to bottom; the skin-friendly layer, the elastic connecting layer and the heat preservation layer are woven into a whole through weft knitting air layer tissue. The bottom end of the fabric body is fixedly connected with the top end of the elastic fabric layer through the bonding layer; the skin-friendly layer is formed by weaving wrap yarns, core yarns of the wrap yarns are spandex filaments, and yarn skins of the wrap yarns are blended yarns formed by uniformly mixing and spinning far infrared heating acrylic fibers / antibacterial viscose fibers; the elastic connecting layer is formed by weaving SORONA monofilaments, the heat preservation layer is formed by weaving hollow polyester filaments, and the elastic fabric layer is formed by vertically interweaving warp yarns and weft yarns in a plain weave structure; the fabric is high in size stability, good in environmental protection property and good in skin-friendly heat retention property.

Description

Technical Field

[0001] This invention belongs to the field of textile technology, specifically relating to a fabric with strong dimensional stability, good elasticity, heat generation and warmth retention, and environmental friendliness and skin-friendly properties, as well as its preparation method. Background Technology

[0002] As people's living standards improve, they not only pursue the aesthetics and style of fabrics, but also place higher demands on the comfort and health aspects of textiles. For example, to ensure the product's appearance and style, more and more people want fabrics with excellent resilience and stability, thus ensuring good dimensional stability. For comfort and health, more and more people are pursuing fabrics with skin-friendly and warm properties. With the development of chemical and textile production technologies, the ways to endow textiles with functionality are becoming increasingly diverse.

[0003] How to imbue textiles with multiple functions to meet the diverse needs of consumers, or to provide them with good dimensional stability, elasticity, heat retention, and environmental friendliness during use, is a direction that textile research needs to explore. Summary of the Invention

[0004] The purpose of this invention is to provide a fabric with strong dimensional stability, good elasticity, heat generation and warmth retention, and environmental friendliness and skin-friendly properties, as well as a method for preparing the same.

[0005] The technical solution adopted in this invention is as follows: a high-elastic fabric with strong dimensional stability, comprising a fabric body, an adhesive layer, and an elastic fabric layer. The fabric body comprises, from top to bottom, a skin-friendly layer, an elastic connecting layer, and a thermal insulation layer. The skin-friendly layer, the elastic connecting layer, and the thermal insulation layer are woven together by a weft-knitted air-layer structure to form a whole. The elastic connecting layer fixes the skin-friendly layer and the thermal insulation layer together by alternating loops. The bottom end of the fabric body and the top end of the elastic fabric layer are fixedly connected by an adhesive layer. The skin-friendly layer is woven from covered yarn, the core yarn of which is spandex filament, and the outer yarn is a blended yarn spun from a uniform mixture of far-infrared heating acrylic fiber and viscose fiber. The elastic connecting layer is woven from SORONA monofilament. The thermal insulation layer is woven from hollow polyester filament. The elastic fabric layer is formed by warp and weft yarns interlacing vertically in a plain weave structure. Both warp and weft yarns are polyester / spandex air-covered yarns. The adhesive layer is a low-melting-point PTT fiber web prepared by wet-laid technology.

[0006] This invention's fabric, through its air-layer structure and the combination of yarns in each layer, endows the fabric with elasticity, good skin-friendliness, and good heat-generating and heat-insulating properties. While providing the basic structural integrity, it also enhances the fabric's functionality. The fabric body and elastic fabric layer are fixedly connected by a fiber web formed by low-melting-point PTT (polytetrafluoroethylene), effectively avoiding the chemical hazards caused by traditional hot-melt adhesives. This also ensures good cushioning between the fabric body and the elastic fabric layer, making the entire fabric softer and more fluffy. The elastic fabric layer prevents the insulation layer of the fabric body from being exposed, thus avoiding the abrasion-resistant and snag-prone characteristics of weft-knitted structures. The elastic fabric layer is exposed on the outside of the fabric, fully utilizing the abrasion resistance and anti-snagging properties of woven fabrics to ensure the fabric's stability in use.

[0007] Furthermore, the covered yarn is prepared by a mechanical covering process, with a covering angle of 30-45° and a covering density of 50-80 turns / cm.

[0008] Furthermore, the hollow polyester filament has a fineness of 50-100D and a hollowness of 15%-30%.

[0009] Furthermore, in the covered yarn, the spandex filament of the core yarn has a fineness of 30D, and the yarn skin is a blended yarn with a fineness of 60S, spun from a mixture of far-infrared heating acrylic fiber and viscose fiber in a weight ratio of 30 / 70.

[0010] Furthermore, the preparation method of the far-infrared heating acrylic fiber is as follows: (1) Preparation of pre-dispersed powder: Take 85-92 parts by weight of acrylonitrile copolymer, 5-10 parts of far-infrared ceramic powder, 1-2 parts of dispersant, 1-2 parts of antioxidant and 1-3 parts of compatibilizer, and place them in a high-speed mixer and stir at a speed of 1200-1500 r / min for 20-30 min to obtain pre-dispersed powder for later use; (2) Preparation of far-infrared acrylonitrile spinning solution: ① Place acrylonitrile copolymer in dimethylformamide solvent and stir at 500-600 r / min until completely dissolved to prepare a spinning solution with a mass concentration of 20%-30%; ② Add pre-dispersed powder to the spinning solution and stir at 800-1000 r / min for 40-60 min at a temperature of 60-70℃. Then filter through a 300-500 mesh filter 2-3 times and degas in a vacuum environment of -0.08--0.1 MPa for 2-3 h to obtain far-infrared acrylonitrile spinning solution.

[0011] (3) Spinning and forming: The far-infrared acrylic spinning solution is used to form nascent fibers through a wet spinning process. The nascent fibers are washed, stretched, and heat-set to obtain far-infrared heating acrylic fibers. The washing temperature of the nascent fibers to prepare far-infrared heating acrylic fibers is 40-50℃, the washing time is 15-20min, the total stretching ratio is 4-6 times, the stretching temperature is 70-80℃, the heat-setting temperature is 120-140℃, and the setting time is 5-8min.

[0012] This invention prepares a dispersion containing far-infrared ceramic powder by pre-dispersing powder, and then uniformly mixes the dispersion in the spinning solution. This multi-step mixing method ensures that the far-infrared ceramic powder can be uniformly dispersed in the acrylic yarn, thus guaranteeing the far-infrared performance of the acrylic yarn.

[0013] Furthermore, the far-infrared ceramic powder is composed of silica, alumina, and zirconium oxide in a mass ratio of 2:1:1, the dispersant is sodium polycarboxylate, the antioxidant is antioxidant 1010, and the compatibilizer is maleic anhydride-grafted acrylonitrile-styrene copolymer.

[0014] Furthermore, the method for preparing the highly elastic fabric with strong dimensional stability includes the following steps: (1) Preparation of the fabric body The fabric itself has a weft-knitted air-layer structure, woven from upper needle plates and lower needle cylinders; both the upper needle plate and the lower needle cylinder contain A-segment and B-segment needles, and the weft-knitted air-layer structure forms a cycle of six loops, wherein: Section A of the upper needle plate: rows 1, 2, and 5 are floating triangles, rows 3 and 6 are looping triangles, and row 4 is a tucked triangle; Section B of the upper needle plate: rows 2, 4, and 5 are floating triangles, rows 3 and 6 are looping triangles, and row 1 is a tucked triangle. In section A of the syringe, channels 1, 3, and 6 are floating triangles, channels 2 and 5 are looping triangles, and channel 4 is a tucking triangle; in section B of the syringe, channels 3, 4, and 6 are floating triangles, channels 2 and 5 are looping triangles, and channel 1 is a tucking triangle. The weft-knitted air layer structure has the 2nd and 5th weaves forming a skin-friendly layer, the 3rd and 6th weaves forming a heat-insulating layer, and the 1st and 4th weaves forming an elastic connecting layer.

[0015] (2) Preparation of low melting point PTT fiber web Low-melting-point PTT fibers are opened and carded, and then made into a fiber web in a wet web forming equipment. The areal density of the low-melting-point PTT fiber web is 18-28 gsm, the thickness is 0.1-0.2 mm, the melting point of the low-melting-point PTT fibers is 115-135℃, the fineness is 25-35D, and the fiber length is 38-51 mm.

[0016] (3) Preparation of elastic fabric layer The elastic fabric layer is formed by weaving polyester / spandex air-covered yarn as warp and weft yarns in a plain weave at a certain density. The warp density of the elastic fabric layer is 25-30 yarns / cm, and the weft density is 18-20 yarns / cm. The polyester / spandex air-covered yarn is composed of a 20-30D spandex filament and a 50-80D polyester filament.

[0017] (3) Preparation of high-elastic fabric with strong dimensional stability: The fabric body, low-melting-point PTT fiber web, and elastic fabric layer are stacked sequentially from top to bottom and fed into a hot-pressing composite equipment. The low-melting-point PTT fiber web melts and firmly bonds the fabric body and elastic fabric layer together, forming a high-elastic fabric with strong dimensional stability. The hot-pressing temperature of the hot-pressing composite equipment is 140-145℃, the hot-pressing pressure is 0.3-0.5MPa, and the hot-pressing time is 15-20s.

[0018] Compared with the prior art, the advantages of the present invention are as follows: (1) The fabric of the present invention has a certain elasticity, good skin-friendly properties and good heat generation and heat preservation properties through the air layer structure of the fabric body and the combination of yarns of each layer. While giving the fabric a basic body structure, it also gives the fabric good functionality. The fabric body and the elastic fabric layer are fixedly connected by a fiber network formed by low melting point PTT, which can better avoid the chemical hazards caused by traditional hot melt adhesive bonding, and can also ensure that the connection between the fabric body and the elastic fabric layer has good cushioning performance, making the whole fabric softer and more fluffy.

[0019] (2) The elastic fabric layer of the fabric of the present invention prevents the insulation layer of the fabric body from being exposed to the outside, thereby avoiding the phenomenon that the weft knitted structure is not wear-resistant and is easy to snag. The elastic fabric layer is presented and exposed on the outside of the fabric as a whole, making full use of the wear-resistant and anti-snagging properties of woven fabric and ensuring the stability of the fabric in use.

[0020] (3) The present invention forms a dispersion containing far-infrared ceramic powder by preparing pre-dispersed powder, and then uniformly mixes the dispersion in the spinning solution. This multi-step mixing method ensures that the far-infrared ceramic powder can be uniformly dispersed in the acrylic yarn, thus ensuring the far-infrared performance of the acrylic yarn. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the fabric structure in Embodiment 1 of the present invention.

[0022] Figure 2 The diagram shows the stitch arrangement and triangular arrangement of the weft knitted air layer structure in Embodiment 1 of the present invention.

[0023] In the diagram, 1 is the fabric body; 2 is the adhesive layer; 3 is the elastic fabric layer; 11 is the skin-friendly layer; 12 is the elastic bonding layer; and 13 is the thermal insulation layer. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Example 1

[0025] like Figures 1-2 A high-elastic fabric with strong dimensional stability includes a fabric body 1, an adhesive layer 2, and an elastic fabric layer 3. The fabric body 1, from top to bottom, includes a skin-friendly layer 11, an elastic connecting layer 12, and a heat-insulating layer 13. The skin-friendly layer 11, elastic connecting layer 12, and heat-insulating layer 13 are woven together using a weft-knitted air-layer structure to form a single unit. The elastic connecting layer 12 securely connects the skin-friendly layer 11 and the heat-insulating layer 13 through alternating loops. The bottom end of the fabric body 1 is fixedly connected to the top end of the elastic fabric layer 3 by the adhesive layer 2. The skin-friendly layer 1... 1. It is woven from covered yarn, wherein the core yarn of the covered yarn is spandex filament and the yarn skin is a blended yarn spun from a uniform mixture of far-infrared heating acrylic fiber and viscose fiber; the elastic connecting layer 12 is woven from SORONA monofilament with a fineness of 20D; the heat insulation layer 13 is woven from hollow polyester filament; the elastic fabric layer 3 is formed by the warp and weft yarns interlacing vertically in a plain weave structure, wherein both the warp and weft yarns are polyester / spandex air-covered yarns; and the adhesive layer 2 is a low-melting-point PTT fiber web prepared by wet web forming technology.

[0026] The fabric of this invention, through the air layer structure of the fabric body 1 and the combination of yarns in each layer, gives the fabric body 1 a certain degree of elasticity, good skin-friendliness, and good heat generation and insulation properties. While giving the fabric a basic structural body, it also gives the fabric good functionality. The fabric body 1 and the elastic fabric layer 3 are fixedly connected by a fiber web formed by low-melting-point PTT, which can effectively avoid the chemical hazards caused by traditional hot melt adhesive bonding, and also ensure that the connection between the fabric body 1 and the elastic fabric layer 3 has good cushioning performance, making the entire fabric softer and more fluffy. The setting of the elastic fabric layer 3 prevents the insulation layer 13 of the fabric body 1 from being exposed to the outside, thereby avoiding the phenomenon of weft knitted structures being not wear-resistant and easy to snag. The elastic fabric layer 3 is presented and exposed on the outside of the fabric as a whole, making full use of the wear resistance and anti-snagging properties of woven fabrics, ensuring the stability of the fabric in use.

[0027] In the covered yarn, the spandex filament of the core yarn has a fineness of 30D, and the yarn skin is a blended yarn with a fineness of 60S, spun from a mixture of far-infrared heating acrylic fiber and viscose fiber in a weight ratio of 30 / 70. The covered yarn is prepared by a mechanical covering process, with a covering angle of 30-45° and a covering density of 50-80 turns / cm. The hollow polyester filament has a fineness of 70D and a hollowness of 20%.

[0028] The far-infrared heating acrylic fiber is prepared as follows: (1) Preparation of pre-dispersed powder: Take 85-92 parts by weight of acrylonitrile copolymer, 5-10 parts of far-infrared ceramic powder, 1-2 parts of dispersant, 1-2 parts of antioxidant and 1-3 parts of compatibilizer, and place them in a high-speed mixer and stir at a speed of 1200-1500 r / min for 20-30 min to obtain pre-dispersed powder for later use; the far-infrared ceramic powder is composed of silicon dioxide, alumina and zirconium oxide in a mass ratio of 2:1:1, the dispersant is sodium polycarboxylate, the antioxidant is antioxidant 1010 and the compatibilizer is maleic anhydride grafted acrylonitrile-styrene copolymer.

[0029] (2) Preparation of far-infrared acrylonitrile spinning solution: ① Place acrylonitrile copolymer in dimethylformamide solvent and stir at 500-600 r / min until completely dissolved to prepare a spinning solution with a mass concentration of 20%-30%; ② Add pre-dispersed powder to the spinning solution and stir at 800-1000 r / min for 40-60 min at a temperature of 60-70℃. Then filter through a 300-500 mesh filter 2-3 times and degas in a vacuum environment of -0.08--0.1 MPa for 2-3 h to obtain far-infrared acrylonitrile spinning solution.

[0030] (3) Spinning and forming: The far-infrared acrylic spinning solution is used to form nascent fibers through a wet spinning process. The nascent fibers are washed, stretched, and heat-set to obtain far-infrared heating acrylic fibers. The washing temperature of the nascent fibers to prepare far-infrared heating acrylic fibers is 40-50℃, the washing time is 15-20min, the total stretching ratio is 4-6 times, the stretching temperature is 70-80℃, the heat-setting temperature is 120-140℃, and the setting time is 5-8min.

[0031] This invention prepares a dispersion containing far-infrared ceramic powder by pre-dispersing powder, and then uniformly mixes the dispersion in the spinning solution. This multi-step mixing method ensures that the far-infrared ceramic powder can be uniformly dispersed in the acrylic yarn, thus guaranteeing the far-infrared performance of the acrylic yarn.

[0032] The method for preparing the high-elastic fabric with strong dimensional stability includes the following steps: (1) Preparation of the fabric body The fabric body 1 is a weft-knitted air layer structure, woven from upper needle plate and lower needle cylinder needles; both the upper needle plate and the lower needle cylinder contain A-segment and B-segment needles, and the weft-knitted air layer structure forms a cycle of six loops, wherein: Section A of the upper needle plate: rows 1, 2, and 5 are floating triangles, rows 3 and 6 are looping triangles, and row 4 is a tucked triangle; Section B of the upper needle plate: rows 2, 4, and 5 are floating triangles, rows 3 and 6 are looping triangles, and row 1 is a tucked triangle. In section A of the syringe, channels 1, 3, and 6 are floating triangles, channels 2 and 5 are looping triangles, and channel 4 is a tucking triangle; in section B of the syringe, channels 3, 4, and 6 are floating triangles, channels 2 and 5 are looping triangles, and channel 1 is a tucking triangle. The fabric body is woven on a 38-inch 22-needle weft knitting double-sided circular knitting machine. The second and fifth rows of the weft knitting air layer structure form a skin-friendly layer 11, the third and sixth rows form a heat-insulating layer 13, and the first and fourth rows form an elastic connecting layer 12.

[0033] (2) Preparation of low melting point PTT fiber web Low-melting-point PTT fibers are opened and carded, and then made into a fiber web in a wet web forming equipment. The low-melting-point PTT fiber web has an areal density of 20 gsm and a thickness of 0.15 mm. The low-melting-point PTT fibers have a melting point of 115-135°C, a fineness of 25D, and a fiber length of 38 mm.

[0034] (3) Preparation of elastic fabric layer Polyester / spandex air-covered yarn is used as the warp and weft yarns, and the elastic fabric layer 3 is formed by weaving in a plain weave at a certain density; the warp density of the elastic fabric layer 3 is 28 yarns / cm, the weft density is 18 yarns / cm, and the polyester / spandex air-covered yarn is composed of a 20D spandex filament and a 50D polyester filament.

[0035] (3) Preparation of high-elastic fabric with strong dimensional stability: Fabric body 1, low-melting-point PTT fiber web 2, and elastic fabric layer 3 are stacked sequentially from top to bottom and fed into a hot-pressing composite equipment. The low-melting-point PTT fiber web melts and firmly bonds fabric body 1 and elastic fabric layer 3 to form a high-elastic fabric with strong dimensional stability. The hot-pressing temperature of the hot-pressing composite equipment is 140-145℃, the hot-pressing pressure is 0.3-0.5MPa, and the hot-pressing time is 15-20s.

[0036] The physical properties of the finished products from the embodiments of the present invention were tested, and the test results are shown in Table 1: Table 1. Test data of fabric physical properties

[0037] As can be seen from the test data in Table 1, the fabric of the present invention has high strength, good elasticity and elastic recovery performance.

[0038] The far-infrared performance of the finished products of the invention embodiments was tested, and the test results are shown in Table 2: Table 2. Far-infrared performance test data of the fabric

[0039] As can be seen from the test data in Table 2, the fabric of the present invention has good far-infrared performance and far-infrared heating performance.

[0040] Note: The breaking strength test is conducted in accordance with the "Tensive Properties of Textiles" (GB / T3923.1-2013).

[0041] The elastic elongation test was conducted according to the standard test method for tensile properties of woven fabrics in elastic yarn (ASTM D3107-07).

[0042] The far-infrared performance test was conducted in accordance with GB / T 30127-2013 Test and evaluation of far-infrared performance of textiles.

[0043] In addition to the above embodiments, the present invention also includes other embodiments. All technical solutions formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of the present invention.

Claims

1. A highly elastic fabric with strong dimensional stability, characterized in that, The fabric body (1) comprises an adhesive layer (2) and an elastic fabric layer (3). The fabric body (1) consists of a skin-friendly layer (11), an elastic connecting layer (12), and a heat-insulating layer (13) from top to bottom. The skin-friendly layer (11), the elastic connecting layer (12), and the heat-insulating layer (13) are woven together by a weft-knitted air layer structure to form a whole. The elastic connecting layer (12) fixes the skin-friendly layer (11) and the heat-insulating layer (13) together by alternating loops. The bottom end of the fabric body (1) and the top end of the elastic fabric layer (3) are fixedly connected by the adhesive layer (2). The skin-friendly layer (11) is woven from covered yarn, the core yarn of which is spandex filament and the outer yarn is a blended yarn spun from a uniform mixture of far-infrared heating acrylic fiber and viscose fiber; the elastic connecting layer (12) is woven from SORONA monofilament; the heat insulation layer (13) is woven from hollow polyester filament; the elastic fabric layer (3) is formed by the warp and weft yarns interlacing vertically in a plain weave structure, both of which are polyester / ammonia air-covered yarns; and the adhesive layer (2) is a low-melting-point PTT fiber web prepared by wet web forming technology.

2. The high-elastic fabric with strong dimensional stability according to claim 1, characterized in that, The covered yarn is prepared by a mechanical covering process, with a covering angle of 30-45° and a covering density of 50-80 turns / cm.

3. The high-elastic fabric with strong dimensional stability according to claim 1, characterized in that, The hollow polyester filament has a fineness of 50-100D and a hollowness of 15%-30%.

4. The high-elastic fabric with strong dimensional stability according to claim 1, characterized in that, The far-infrared heating acrylic fiber is prepared as follows: (1) Preparation of pre-dispersed powder: Take 85-92 parts by weight of acrylonitrile copolymer, 5-10 parts of far-infrared ceramic powder, 1-2 parts of dispersant, 1-2 parts of antioxidant and 1-3 parts of compatibilizer, and place them in a high-speed mixer and stir at a speed of 1200-1500 r / min for 20-30 min to obtain pre-dispersed powder for later use; (2) Preparation of far-infrared acrylonitrile spinning solution: ① Place acrylonitrile copolymer in dimethylformamide solvent and stir at 500-600 r / min until completely dissolved to prepare a spinning solution with a mass concentration of 20%-30%; ② Add pre-dispersed powder to the spinning solution and stir at 800-1000 r / min for 40-60 min at a temperature of 60-70℃. Then filter through a 300-500 mesh filter 2-3 times and degas in a vacuum environment of -0.08--0.1 MPa for 2-3 h to obtain far-infrared acrylonitrile spinning solution; (3) Spinning and forming: The far-infrared acrylic spinning solution is used to form nascent fibers through a wet spinning process. The nascent fibers are washed, stretched, and heat-set to obtain far-infrared heating acrylic fibers. The washing temperature of the nascent fibers to prepare far-infrared heating acrylic fibers is 40-50℃, the washing time is 15-20min, the total stretching ratio is 4-6 times, the stretching temperature is 70-80℃, the heat-setting temperature is 120-140℃, and the setting time is 5-8min.

5. The high-elastic fabric with strong dimensional stability according to claim 4, characterized in that, The far-infrared ceramic powder is composed of silicon dioxide, alumina and zirconium oxide in a mass ratio of 2:1:

1. The dispersant is sodium polycarboxylate, the antioxidant is antioxidant 1010, and the compatibilizer is maleic anhydride-grafted acrylonitrile-styrene copolymer.

6. The method for preparing a high-elastic fabric with strong dimensional stability according to claim 1, characterized in that, Includes the following steps: (1) Preparation of the fabric body; The fabric body (1) is a weft-knitted air layer structure, woven from upper needle plate and lower needle cylinder needles; both the upper needle plate and the lower needle cylinder contain A-segment and B-segment needles, and the weft-knitted air layer structure forms a cycle of six loops, wherein: Section A of the upper needle plate: rows 1, 2, and 5 are floating triangles, rows 3 and 6 are looping triangles, and row 4 is a tucked triangle; Section B of the upper needle plate: rows 2, 4, and 5 are floating triangles, rows 3 and 6 are looping triangles, and row 1 is a tucked triangle. In section A of the syringe, channels 1, 3, and 6 are floating triangles, channels 2 and 5 are looping triangles, and channel 4 is a tucking triangle; in section B of the syringe, channels 3, 4, and 6 are floating triangles, channels 2 and 5 are looping triangles, and channel 1 is a tucking triangle. The weft-knitted air layer structure forms a skin-friendly layer (11) with the 2nd and 5th weaves, an insulation layer (13) with the 3rd and 6th weaves, and an elastic connecting layer (12) with the 1st and 4th weaves. (2) Preparation of low-melting-point PTT fiber web; Low-melting-point PTT fibers are opened and carded, and then made into a fiber web in a wet web forming equipment. The areal density of the low-melting-point PTT fiber web is 18-28 gsm, the thickness is 0.1-0.2 mm, the melting point of the low-melting-point PTT fibers is 115-135℃, the fineness is 25-35D, and the fiber length is 38-51 mm. (3) Prepare the elastic fabric layer; Polyester / ammonia air-covered yarn is used as warp and weft yarn, and is interwoven in plain weave at a certain density to form an elastic fabric layer (3) fabric; the warp density of the elastic fabric layer (3) fabric is 25-30 yarns / cm, the weft density is 18-20 yarns / cm, and the polyester / ammonia air-covered yarn is composed of a spandex filament with a fineness of 20-30D and a polyester filament with a fineness of 50-80D; (4) Preparation of high-elastic fabric with strong dimensional stability: The fabric body (1), low-melting-point PTT fiber web (2), and elastic fabric layer (3) are stacked sequentially from top to bottom and fed into a hot-pressing composite equipment. After the low-melting-point PTT fiber web melts, it firmly bonds the fabric body (1) and the elastic fabric layer (3) to form a high-elastic fabric with strong dimensional stability. The hot-pressing temperature of the hot-pressing composite equipment is 140-145℃, the hot-pressing pressure is 0.3-0.5MPa, and the hot-pressing time is 15-20S.

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