Production process of sunscreen and breathable brocade-spandex woven fabric

Abstract

The invention discloses a production process of a sun-proof and breathable brocade-spandex woven fabric, which comprises the following steps: gray cloth pretreatment: gray cloth with warp and weft containing spandex / alkali-soluble yarn is adopted, the alkali-soluble yarn accounts for 20%-30% of the gray cloth, and low-tension shrinkage scouring desizing and pre-shaping are adopted to stabilize the cloth surface; alkali deweighting: adding a proper amount of alkali into the dye vat for alkali deweighting, and dissolving the alkali-soluble yarns at the alkali deweighting temperature of 90-100 DEG C for 30-70 minutes to obtain 20-40g / L of liquid alkali; the dosage of a fluorescent agent is 0-1.5%, an anti-ultraviolet auxiliary agent is added, the treatment temperature is 60-100 DEG C, and the heat preservation time is 10-50 min; and drying and shaping. The elastic sunscreen clothes fabric prepared by the invention has high-index air permeability, excellent anti-ultraviolet effect and cool feeling effect.

Description

Technical Field

[0001] The invention relates to a production process of a sun-proof and breathable nylon-spandex woven fabric. Background Art

[0002] Ultraviolet rays are rays in sunlight with a wavelength of 400 to 10 nanometers (nm). They can be divided into four types: UVA (ultraviolet A, wavelength 400 to 320 nanometers, low-frequency long wave), UVB (wavelength 320 to 280 nanometers, medium-frequency medium wave), UVC (wavelength 280 to 100 nanometers, high-frequency short wave), and EUV (100 to 10 nanometers, ultra-high frequency). Figure 1 As shown in the figure, most of the energy waves in the UVC and EUV segments are blocked by the ozone layer and air medium and are difficult to reach the ground, so the main ultraviolet rays that cause harm to the human body are the UVA and UVB segments. Excessive UVB can cause changes in DNA in cells, which is the so-called sunburn; UVA is the band that really causes the most damage to the skin, and it can cause the skin to turn red and tan. With the improvement of people's skin care awareness and global warming, facing the changes in the external environment with frequent high temperature weather, sun protection has gradually become a rigid need in people's daily life.

[0003] Chinese consumers (especially women) pay great attention to daily sun protection, pursue anti-aging and skin whitening, and are increasingly accustomed to sun protection measures throughout the year and in different occasions. Therefore, Chinese consumers have a huge demand for sun protection products. With the continuous improvement of fabric and material technology, sun protection clothing products can achieve a balance between comfort and sun protection performance, thereby significantly improving the popularity of sun protection clothing among consumers. At the same time, brands have also begun to pay attention to design and aesthetics to meet consumers' demand for appearance. With the continuous increase in the income of Chinese residents, the concepts of "sun protection is anti-aging" and "sun protection is needed in all seasons" have gradually taken root in the hearts of the people, as well as the increase in outdoor activities and tourism, and the strengthening of skin care awareness. Nowadays, sun protection clothing has become a daily necessity for many Chinese consumers. Thanks to this, the market size of sun protection clothing in China has increased year by year, and there is huge room for future development prospects. Driven by countless brands and merchants who have heard the news, the scale of China's sun protection market has skyrocketed from 45.9 billion yuan in 2016 to 67.5 billion yuan in 2022, and will continue to grow at a rate of 9.4% per year, and may exceed 95.8 billion yuan in 2026. Among them, the online business of sun protection clothing has an average annual growth rate of 13%, and may reach 42.8 billion yuan in 2026.

[0004] As a fabric manufacturer, the competition in sun protection clothing is becoming increasingly fierce. The sun protection index (the sun protection effect of sunscreen products, which is determined by the minimum erythema dose of the skin) is getting higher and higher, and the demand for additional functions such as cool feeling and quick drying is increasing. Since sun protection clothing is often worn in summer and outdoor living environments, consumers often feel that wearing sun protection clothing is stuffy and has poor breathability. Therefore, it is necessary to further develop existing summer sun protection fabrics so that their various properties can better meet market demand. Summary of the invention

[0005] In order to solve the problems existing in the prior art, the present invention provides a production process of a sun-proof and breathable nylon-spandex woven fabric. Through corresponding process treatment, a sun-proof clothing fabric with high air permeability of 100+, excellent anti-ultraviolet effect of 100+, and good cooling effect is prepared to meet market demand.

[0006] To achieve the above object, the technical solution adopted by the present invention is a production process of sun-proof and breathable nylon-spandex woven fabric, which is characterized by comprising the following steps:

[0007] Grey cloth pretreatment: using grey cloth with spandex yarn / alkali-soluble yarn in both warp and weft, wherein the alkali-soluble yarn accounts for 20% to 30% of the grey cloth, and using low-tension shrinkage desizing and pre-setting to stabilize the cloth surface;

[0008] Alkali reduction: add an appropriate amount of alkali into the dye vat to carry out alkali reduction to dissolve the alkali-soluble yarn. The alkali reduction temperature is 90℃~100℃, the alkali reduction time is about 30-70min, and the amount of liquid alkali is 20~40g / L;

[0009] Dyeing: The dosage of fluorescent agent is 0-1.5%, and anti-ultraviolet additives are added. The processing temperature is 60-100℃, and the insulation time is 10-50min;

[0010] Drying: low tension mesh belt mode is used for drying, the drying temperature is 120-140℃, the speed is 30-60m / min, and the air volume is 6600-13500m3 / h; and

[0011] Forming: Forming temperature is 160-180℃, speed is 30-60m / min, overfeed is 0-20, air volume is 3150-7000m3 / h.

[0012] Among them, the amount of fluorescent agent used is not 0, and the overfeeding is not 0 either.

[0013] In one embodiment of the present invention, fabrics woven from spandex / nylon and spandex / alkali-soluble yarn are selected as the grey fabric, wherein "spandex / alkali-soluble yarn" means "alkali-soluble yarn coated spandex", and "spandex / nylon" means "nylon coated spandex".

[0014] In one embodiment of the present invention, the spandex yarn in the grey cloth / nylon yarn in the nylon is selected from DTY yarns with a high F number. Generally speaking, yarns with an F number greater than their denier are high F number yarns.

[0015] Choice of base fabric material:

[0016] 1. Nylon is resistant to alkali but not acid, while alkali-soluble yarn (modified polyester) is resistant to acid but not alkali, and can be decomposed by strong alkali. Yarn coated with spandex gives the fabric good elasticity and stretchability. According to the material characteristics of nylon, alkali-soluble yarn and spandex, nylon-coated spandex and alkali-soluble yarn-coated spandex yarn are designed. Subsequently, strong alkali is used to dissolve the alkali-soluble yarn in the fabric before dyeing, leaving only nylon and spandex in the fabric. The dissolved holes give the fabric good air permeability, achieving a breathability of 100+.

[0017] 2. Spandex yarn / nylon and spandex yarn / alkali-soluble yarn can make the fabric stronger and meet the performance indicators of sun-proof clothing fabrics. It can also improve the large gaps between the holes in the fabric after the alkali-soluble yarn is dissolved (after the alkali-soluble yarn is melted, the spandex in the holes can avoid hollow holes and excessive impact on UV resistance, and UV resistance of 100+ is required) to resist the impact of deterioration of UV performance.

[0018] 3. The proportion of alkali-soluble yarn in this fabric before alkali reduction is in the range of 20% to 30%. If the proportion of alkali-soluble yarn is too small, the holes formed after alkali reduction will be small and cannot meet the breathability requirements. If the proportion is too large, the holes formed after alkali reduction will be larger and the UV resistance will be poor. In addition, it will also affect the strength of the fabric.

[0019] 4. For nylon-spandex yarn in fabrics, try to use DTY yarn with more F numbers without affecting the strength. In principle, matte or semi-gloss yarns are used, because matte or semi-gloss yarns contain TiO2, which is a very good inorganic UV reflective shielding agent and can improve the UV resistance index of fabrics. The purpose of using yarn with more F numbers is to increase the yarn specific surface area of ​​the fabric, thereby increasing the probability of fabric reflecting UV rays. Similarly, the purpose of using DTY yarns is to change the shape of the yarns, thereby enhancing the slow reflection of UV light, and further, it can enhance the breathability of the fabric. In addition, nylon fabrics themselves have a cooling effect.

[0020] 5. Alkali-soluble yarn generally uses 50D~75D FDY yarn. FDY yarn can react faster and better in the alkali reduction process. If the yarn denier number is too small, the dissolved holes are small and the air permeability is poor. If it is too large, the dissolved holes are large and the air permeability is too high. The F number is selected from 36 to 96F. If the F number is too high, the yarn has too strong covering property, and the alkali reduction time is long, which affects the strength of the fabric. The lower the F number and the thicker the yarn, the slower the alkali reduction reaction, which affects the alkali reduction effect.

[0021] In one embodiment of the present invention, the anti-ultraviolet additives include: the amount of anti-ultraviolet additive 1 is 0-4%, the amount of anti-ultraviolet additive 2 is 0-4%. The amount of anti-ultraviolet additive is not zero.

[0022] In one embodiment of the present invention, the alkali-soluble yarn is selected from 50D-75D FDY yarn, and the F number is 36F-96F.

[0023] In one embodiment of the present invention, an overflow dyeing machine is selected for rope dyeing.

[0024] In one embodiment of the present invention, in the shaping process, a waterproof functional agent or a moisture absorbing and quick-drying agent is added, wherein the waterproof functional agent includes 10-70 g / l of a waterproofing agent, 0-20 g / l of a tear enhancing agent, 0-70 g / L of a softener, 0-10 g / L of an anti-pyrite agent, a penetrant concentration of 1-2 g / L, and an acid concentration of 0.5-2 g / L; the moisture absorbing and quick-drying agent includes 5-20 g / L of a moisture absorbing and quick-drying agent.

[0025] In one embodiment of the present invention, the alkali-soluble yarn is made of modified polyester.

[0026] The pre-treatment and pre-setting adopt low tension desizing and elastic fabric pre-setting to stabilize the fabric surface size and density.

[0027] In the alkali reduction process, an overflow dyeing machine is used to add an appropriate amount of alkali to the dyeing vat for alkali reduction to dissolve the alkali-soluble yarn. The overflow dyeing machine has a small tension, which can reduce the impact on the strength of the fabric during dyeing and ensure the tearing strength and breaking strength of the fabric. Since the melting point of the alkali-soluble yarn is 85°C, the alkali reduction temperature is between 90°C and 100°C. According to the composition ratio of the fabric, the appropriate alkali and alkali reduction time are tested in a small sample to confirm the best alkali reduction process. If the alkali is excessive or the alkali reduction time is too long, the cloth will become brittle and the tearing strength and breaking strength of the cloth surface will be poor; if the alkali is too little or the alkali reduction time is too short, the alkali reduction will be incomplete, the holes on the cloth will be small, and the fabric will have poor air permeability.

[0028] In the dyeing process, an overflow dyeing machine is used for rope dyeing. First, in the rope state, the fabric and the water flow collide, which can improve the fluffiness of the fabric, thereby increasing the fabric's scattering effect on ultraviolet rays; secondly, because it is a stretch fabric, the overflow dyeing machine has a small tension, and rope dyeing can allow the stretch fabric to maintain good elasticity and density, and the use of overflow dyeing machine dyeing can reduce the influence of fabric strength and fabric wrinkle style when the fabric is in rope dyeing. During dyeing, a fluorescent agent is used as a base, and an anti-ultraviolet additive is added as an auxiliary. Because the fluorescent agent can absorb ultraviolet rays, it can improve the fabric's resistance to ultraviolet rays and enhance the fabric's sun protection performance. The auxiliary anti-ultraviolet additives are two synergistic organic ultraviolet absorbing shielding agents, one of which can increase UPF and the other can reduce UVA transmittance, and the addition of anti-ultraviolet additives during dyeing can improve the adhesion uniformity of the additives.

[0029] In the drying process, a low-tension mesh belt mode is used for drying. Although the dyeing is rope-shaped, which can bring a certain degree of fluffiness to the fabric, since it is dyed under the condition of a water bath, after the dyeing is out of the vat, the fibers will still be connected together under the action of water, just like after shampooing, a hair dryer is needed to blow hot to give the hairstyle a certain fluffiness. If a barrel dryer is used, the barrel type has tension, which will reduce the density of the fabric and affect the anti-ultraviolet effect; the contact type will reduce the fluffiness effect of the fabric, thereby affecting the feel of the fabric.

[0030] In the shaping process, a Fuji-Matsu shaping machine is used. Before shaping, the fabric density and air permeability and sun protection performance of the fabric must be confirmed, and the shaping process such as effective width, density, air permeability and sun protection, tearing and slipping and other fabric properties are formulated according to the dried fabric. By pre-shaping the material, the fabric is given functions such as waterproof, cool, moisture absorption and quick drying, and the strong physical properties such as tearing and slipping of the fabric are enhanced, and the fabric is given a comfortable feel, stable width and weight, and the fabric style required by the customer.

[0031] This technical solution has the following beneficial effects:

[0032] Compared with the prior art, the present invention uses specific yarns to weave fabrics with appropriate density ratio as a basis, and obtains a fabric with an anti-ultraviolet structure through the processes of grey cloth pre-treatment → alkali reduction → dyeing → drying → shaping. The alkali-soluble yarn is dissolved through the alkali reduction process, and the coated spandex shrinks to a certain extent, so that the original flat cloth surface is no longer in the same plane, thereby forming three-dimensional pores; further, the optimal pore state is obtained through drying and shaping, so that the fabric can ensure a considerable physical shielding effect on the skin when worn, and can also meet the function of pore air permeability, so that the air permeability index and sun protection index of the fabric can reach 100+, and it also has a cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a diagram showing the principle of ultraviolet damage to the human body;

[0034] Figure 2 It is a schematic diagram of the fabric structure prepared by the present invention;

[0035] Figure 3 It is a partial enlarged view of the fabric prepared by the present invention. DETAILED DESCRIPTION

[0036] Below is a combination of the embodiments and the attached Figures 1 to 3 The present invention is further described.

[0037] Example 1

[0038] A production process of sun-proof and breathable nylon-spandex woven fabrics, which adopts the following procedures: material selection→pre-treatment of grey cloth→pre-determination→alkali reduction→dyeing→drying→setting.

[0039] In the material selection process, the fabric specifications are as follows: the warp yarn is 20D, 24F matte DTY nylon machine-wrapped 20D spandex + 75D, 36F alkali-soluble yarn FDY empty-wrapped 20D spandex; the weft yarn is the same as the warp yarn.

[0040] In the pre-treatment and predetermined process, the desizing temperature is 95°C, the speed is 50m / min, the desizing aids are: liquid alkali, oil remover, refining agent, chelating dispersant. The predetermined temperature is 190°C, the speed is 20m / min, the overfeed is 15, and the predetermined aid is an antioxidant.

[0041] In the alkali reduction process, the alkali reduction temperature is 100° C., the holding time is 70 m / min, the liquid alkali concentration is 40 g / L, and the reduction rate is 30%.

[0042] In the dyeing process, an overflow dyeing machine rope dyeing method is adopted, the fluorescent agent is 0.7%, the anti-ultraviolet auxiliary agent 1 is 2%, the anti-ultraviolet auxiliary agent 2 is 2%, the dyeing temperature is 100° C., and the heat preservation is 40 minutes.

[0043] In the drying process, the drying temperature is 130°C, the speed is 50m / min, and the air volume is 7700m 3 / h.

[0044] In the shaping process, the shaping temperature of this embodiment is 160°C, the speed is 30 / min, the overfeed is 10, and the air volume is 6600m3 / h; an auxiliary agent is added to make the fabric waterproof, and the concentration of the waterproof agent in the auxiliary agent is 60g / L, the anti-pyrite agent is 10g / L, the tear enhancer is 12g / L, the penetrant concentration is 1g / L, and the acid concentration is 1g / L.

[0045] In the material selection process of the breathable and UV-resistant nylon stretch fabric in this example, fine-denier, high-refractive, high-scattering and UV-absorbing nylon yarn is used to wrap fine-denier spandex and coarse-denier alkali-soluble yarn to wrap spandex, and a grey cloth with a suitable density ratio and a structure that can protect against UV rays is woven to achieve a finished fabric with a breathable and UV-resistant index of 100+.

[0046] In the alkali reduction process, an overflow dyeing machine is used for alkali reduction. The alkali-soluble yarn in the grey cloth is dissolved through alkali reduction, forming holes, which increases the air permeability of the fabric.

[0047] In the dyeing process, overflow dyeing machine is used for rope dyeing, fluorescent agent is used as the base, and anti-UV additives are added to improve the fluffiness of the fabric, thereby increasing the fabric's scattering effect on ultraviolet rays. Fluorescent agent and anti-UV additives are added to further absorb ultraviolet rays and reduce their penetration.

[0048] In the drying process, a loose mesh-belt multi-layer dryer is used for drying. The hot air circulates back and forth. According to the characteristics of the fabric, the drying process is precisely controlled and the drying performance is uniform, making the fabric fluffy and soft, which is convenient for increasing the fabric's scattering effect on ultraviolet rays.

[0049] In the shaping process, waterproofing agents are used to give the fabric a certain degree of water repellency. On the one hand, it can effectively prevent watermarks on the fabric and reduce fabric dirt, and on the other hand, it can keep the fabric feel dry. Tear-lifting agents and anti-pyrite agents are used to ensure that even after alkali reduction, the fabric can still meet the strength requirements and meet the performance indicators of clothing.

[0050] In summary, the summer sun protection clothing obtained by the production process of the breathable anti-ultraviolet nylon stretch fabric of the present invention has a gram weight of 80±5g / m 2 It is not only light and comfortable to wear, but also has anti-ultraviolet (UPF>100+, UVA<5%), breathable (>100mm / s), waterproof level 4, cool feeling (>0.15J / (cm 2 ·s)) and other functionalities.

[0051] Table 1 is a physical property test report of the fabric prepared in Example 1 of the present invention.

[0052] Table 1

[0053] Test items Test Method Test Results Square meter weight GB / T 4669.5 <![CDATA[83g / m 2 ]]> Breathable performance GB / T5453 100Pa mm / s 153mm / s UV protection GB / T 18830 - UPF 165UVa: 0.8% Determination of tear strength GB / T 3917.2-2009(trouser shape) Warp 11.5N; Weft 8.9N Determination of suture slippage (constant load) GB / T 21294(100N) Warp 2.84mm; Weft 2.87mm Determination of breaking strength GB / T 3923.1-2013 (strip method) Longitude 311N; Latitude 235N Cool feeling when touching GB / T 35263-2017 <![CDATA[0.20J / (cm 2 ·s)]]>

[0054] Example 2

[0055] A production process of sun-proof and breathable nylon-spandex woven fabrics, which adopts the following procedures: material selection→pre-treatment of grey cloth→pre-determination→alkali reduction→dyeing→drying→setting.

[0056] In the material selection process, the fabric specifications are as follows: the warp yarn is 40D, 34F dull DTY nylon wrapped with 30D spandex plus 50D, 36F semi-gloss alkali-soluble yarn FDY wrapped with 30D spandex; the weft yarn is the same as the warp yarn.

[0057] In the pre-treatment and predetermined process, the desizing temperature is 95°C, the speed is 35m / min, the desizing aids are: liquid alkali, oil remover, refining agent, chelating dispersant. The predetermined temperature is 195°C, the speed is 20m / min, the overfeed is 15, and the predetermined aid is an antioxidant.

[0058] In the alkali reduction process, the alkali reduction temperature is 100°C, the holding time is 70m / min, the liquid alkali concentration is 30g / L, and the reduction rate is 20%.

[0059] In the dyeing process, an overflow dyeing machine rope dyeing method is adopted, the fluorescent agent is 0.15%, the anti-ultraviolet auxiliary agent 1 is 2%, the anti-ultraviolet auxiliary agent 2 is 2%, the dyeing temperature is 100° C., and the temperature is kept for 30 minutes.

[0060] In the drying process, the drying temperature is 130°C, the speed is 50m / min, and the air volume is 9900m 3 / h.

[0061] In the shaping process, the shaping temperature of this embodiment is 160°C, the speed is 35m / min, the overfeed is 20, and the air volume is 6000m3 / h; a moisture-absorbing and quick-drying auxiliary agent is added to give the fabric an anti-ultraviolet cool feeling and a moisture-absorbing and quick-drying function.

[0062] In the material selection process of the breathable and UV-resistant nylon stretch fabric in this example, fine-denier, high-refractive, high-scattering and UV-absorbing nylon yarn is used to wrap fine-denier spandex and coarse-denier alkali-soluble yarn to wrap spandex, and a grey cloth with a suitable density ratio and a structure that can protect against UV rays is woven to achieve a finished fabric with a breathable and UV-resistant index of 100+.

[0063] In the alkali reduction process, overflow dyeing machine is used for alkali reduction. The fabric undergoes alkali reduction to dissolve the alkali-soluble yarn in the grey cloth, forming holes to increase the air permeability of the fabric.

[0064] In the dyeing process, overflow dyeing machine is used for rope dyeing, fluorescent agent is used as the base, and anti-UV additives are added to improve the fluffiness of the fabric, thereby increasing the fabric's scattering effect on ultraviolet rays. Fluorescent agent and anti-UV additives are added to further absorb ultraviolet rays and reduce their penetration.

[0065] In the drying process, a loose mesh-belt multi-layer dryer is used for drying. The hot air circulates back and forth. According to the characteristics of the fabric, the drying process is precisely controlled and the drying performance is uniform, making the fabric fluffy and soft, which is convenient for increasing the fabric's scattering effect on ultraviolet rays.

[0066] In the shaping process, moisture-absorbing and quick-drying additives are used to make the fabric not only breathable and UV-resistant, but also moisture-absorbing and quick-drying, ensuring the fabric's multiple functionalities while also meeting the performance indicators of clothing fabrics.

[0067] In summary, the summer sun protection clothing obtained by the production process of the breathable anti-ultraviolet nylon stretch fabric of the present invention has a gram weight of 104±5g / m2, and it not only has a light and comfortable wearing feeling, but also has anti-ultraviolet (UPF>100+, UVA<5%), breathable (>100mm / s), moisture absorption and quick drying Ⅰ (GB / T 21655.2-2019), cool feeling (>0.15J / (cm 2 ·s)) and other functionalities.

[0068] In the material selection process, the sun-proof and breathable nylon stretch fabric of the present invention selects fine-denier, high-refractive, and high-scattering nylon DTY yarns to wrap fine-denier spandex and coarse-denier alkali-soluble yarns to wrap spandex, and weaves a grey cloth with a suitable density ratio and a tissue structure that can prevent ultraviolet rays, so as to achieve a finished fabric with a breathable and anti-ultraviolet index of 100+. Figure 2 The figure is a schematic diagram of the warp and weft structure of the plain weave fabric, wherein the weft yarn 1 is spandex / nylon; the warp yarn 2 is spandex / nylon; spandex yarn 3 and the melted alkali-soluble yarn, the black narrow block at spandex yarn 3 indicates that the spandex yarn floats above the weave point. Figure 3 This is a partial enlarged picture of the fabric. It can be seen that through the preparation process of the present invention, the pores after alkali dissolution are three-dimensional pores, which can contribute to providing sun protection and air permeability.

[0069] In the alkali weight reduction process, the fabric is reduced by alkali, which dissolves the alkali-soluble yarn in the grey cloth, forming holes and increasing the air permeability of the fabric.

[0070] In the dyeing process, overflow dyeing machine is used for rope dyeing, fluorescent agent is used as the base, and anti-UV additives are added to improve the fluffiness of the fabric, thereby increasing the fabric's scattering effect on ultraviolet rays. Fluorescent agent and anti-UV additives are added to further absorb ultraviolet rays and reduce their penetration.

[0071] In the drying process, a low-tension loose mesh-belt multi-layer dryer is used for drying. The hot air circulates back and forth. According to the characteristics of the stretch fabric, the drying process is precisely controlled and the drying performance is uniform, making the fabric fluffy and soft, which is convenient for increasing the fabric's scattering effect on ultraviolet rays.

[0072] In the shaping process, waterproofing agents or moisture-absorbing and quick-drying agents are used to make the fabric not only breathable and UV-resistant, but also waterproof or moisture-absorbing and quick-drying, ensuring the fabric's multiple functionalities while also meeting clothing fabric performance indicators.

[0073] The summer sun protection clothing obtained by adopting the production process of the breathable anti-ultraviolet nylon stretch fabric of the present invention not only has a light and comfortable wearing feeling, but also has the performance of anti-ultraviolet + breathability index reaching 100+.

[0074] The above specific embodiments are only used to illustrate the present invention rather than to limit the present invention. Any changes and substitutions made to the present invention without creative work within the scope of protection of the present invention and the claims shall fall within the scope of protection of the patent of the present invention.

Claims

1. A production process for sun-proof and breathable nylon-spandex woven fabric, characterized in that: The steps include: Grey cloth pretreatment: using grey cloth with spandex yarn / alkali-soluble yarn in both warp and weft, wherein the alkali-soluble yarn accounts for 20% to 30% of the grey cloth, and using low-tension desizing and pre-setting to stabilize the cloth surface; Alkali reduction: add appropriate amount of alkali to the dye vat to reduce the weight and dissolve the alkali-soluble yarn. The alkali reduction temperature is 90℃~100℃, the time is 30-70min, and the liquid alkali is 20~40g / L; Dyeing: The dosage of fluorescent agent is 0-1.5%, and anti-ultraviolet additives are added. The processing temperature is 60-100℃, and the insulation time is 10-50min; Drying: low tension mesh belt mode is used for drying, the drying temperature is 120-140℃, the speed is 30-60m / min, and the air volume is 6600-13500m 3 / h; and Setting: Setting temperature is 160-180℃, speed is 30-60m / min, overfeed is 0-20, air volume is 3150-7000m 3 / h.

2. The production process according to claim 1, characterized in that: Fabrics woven from spandex yarn / nylon and spandex yarn / alkali-soluble yarn are selected as the grey fabric.

3. The production process according to claim 2, characterized in that: The nylon in spandex / nylon is made of DTY yarn with a majority of F numbers.

4. The production process according to claim 1, characterized in that: The anti-ultraviolet auxiliary agent comprises: the anti-ultraviolet auxiliary agent 1 is used in an amount of 0-4%, and the anti-ultraviolet auxiliary agent 2 is used in an amount of 0-4%.

5. The production process according to claim 1, characterized in that: The alkali-soluble yarn is selected from 50D-75D FDY yarn, and the F number is selected from 36F-96F.

6. The production process according to claim 1, characterized in that: Overflow dyeing machine is used for rope dyeing.

7. The production process according to claim 1, characterized in that: In the shaping process, a waterproof functional agent or a moisture-absorbing and quick-drying agent is added, wherein the waterproof functional agent includes 10-70 g / l of a waterproofing agent, 0-20 g / l of a tear-increasing agent, 0-70 g / L of a softening agent, 0-10 g / L of an anti-pyrite agent, 1-2 g / L of a penetrant concentration, and 0.5-2 g / L of an acid concentration; the moisture-absorbing and quick-drying agent includes 5-20 g / L of a moisture-absorbing and quick-drying agent.

8. The production process according to any one of claims 1 to 7, characterized in that: The material of the alkali-soluble yarn is modified polyester.

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