Low-carbon yarn-dyed fabric and its production process and application

Abstract

The present invention belongs to the technical field of fabric textiles, and specifically relates to low-carbon color-woven fabrics and their production process and application. The production process of the low-carbon color-woven fabrics comprises ecological scalding, dyeing and high-efficiency soaping of yarns, low-carbon sizing of the treated yarns, weaving color-woven fabrics, and natural finishing, liquid ammonia natural finishing, and green anti-wrinkle finishing of the color-woven fabrics to obtain low-carbon color-woven fabrics. The production process of the low-carbon color-woven fabrics provided by the present invention has low pollution, low water consumption, and low carbon emissions. The produced fabrics are excellent in wear resistance, naturally soft to the touch, and low in formaldehyde content. The low-carbon color-woven fabrics are used to make shirts, which have healthy, environmentally friendly, green, and low-carbon effects.

Description

Technical Field

[0001] The invention belongs to the technical field of fabric weaving, and in particular relates to low-carbon yarn-dyed fabric and a production process and application thereof. Background Art

[0002] The textile and clothing industry has a large carbon emission, which is the second largest pollution source after oil. At present, the total fiber used for processing clothing accounts for a large proportion. As a pillar industry, the textile and clothing industry is also researching green, ecological and sustainable development technologies.

[0003] Yarn-dyed shirt fabric is a textile product that is made by first dyeing the yarn and then weaving the colored yarn into fabric. It has good color fastness and color light perception, and a strong sense of color hierarchy. However, in the production process of yarn-dyed shirt fabric, there are also industry problems such as high energy consumption, high water consumption, and high pollution.

[0004] Chinese patent CN103431549A discloses a low-carbon fabric, which is made by blending a certain proportion of zero-dye regenerated cellulose fiber, natural protein fiber, and polyester fiber to achieve dyeing and finishing, thereby saving energy and reducing emissions. However, this method has great restrictions on fabric color and fiber use, and cannot meet the personalized needs of clothing applications.

[0005] Chinese patent CN115969104A discloses a low-carbon biodegradable polylactic acid fiber antibacterial knitted underwear. The polylactic acid fiber is dyed using a one-bath two-step dyeing method, which shortens the dyeing process and achieves the purpose of energy saving, emission reduction and low carbon. However, this method is only applicable to the dyeing of knitted fabrics, has great restrictions on fiber raw materials and colors, and cannot meet the dyeing requirements of other natural fibers.

[0006] Chinese patent CN112391771A discloses a low-carbon textile dyeing and finishing pretreatment system, including a dyeing and finishing pretreatment washing system. By modifying the textile fabric washing equipment, the washing efficiency is improved and the filtered clean water is recycled to achieve the purpose of saving water and reducing carbon emissions. However, this method is only applicable to piece-dyed fabrics and the equipment modification is complicated and the investment cost is high. Summary of the invention

[0007] The technical problem to be solved by the present invention is to overcome the above-mentioned defects of the prior art and provide a production process for low-carbon color-dyed fabrics, which has low pollution, low water consumption, and low carbon emissions. The produced fabrics are excellent and durable, have a naturally soft hand feel, and have a formaldehyde content of less than 5PPM. The low-carbon color-dyed fabrics are used to make shirts, which have a healthy, environmentally friendly, green, and low-carbon effect.

[0008] The production process of low-carbon yarn-dyed fabrics described in the present invention comprises ecological scalding and bleaching, dyeing and high-efficiency soaping of yarns, low-carbon sizing of the treated yarns, weaving yarn-dyed fabrics, and natural finishing, liquid ammonia natural finishing, and green anti-wrinkle finishing of the yarn-dyed fabrics to obtain low-carbon yarn-dyed fabrics. Specifically, the following steps are included: (1) ecological scalding and bleaching: pre-treating pure cotton or cotton and cellulose fiber blended yarns using a specified bio-enzyme pre-treatment process; (2) high-efficiency soaping after yarn dyeing: soaping the dyed yarns using a high-efficiency soaping process to remove floating colors; (3) low-carbon sizing and weaving: sizing the dyed warp yarns using a specified low-carbon sizing process and weaving them into grey fabrics.

[0009] The fabric is woven from pure cotton fiber or a blend of pure cotton fiber and cellulose fiber; the pure cotton fiber includes one of Xinjiang long-staple cotton fiber, Pima cotton fiber, and ordinary cotton fiber; the cellulose fiber includes one of hemp fiber, Tencel fiber, Lyocell fiber, and viscose fiber.

[0010] The ecological scouring and bleaching adopts bio-enzyme pretreatment, and the bio-enzyme process includes 1-2g / L of penetrant WA-M, 2-3g / L of refining agent SAE, 3-6g / L of hydrogen peroxide, 7-9g / L of bio-enzyme DS-HT, keeping warm at 98-105°C for 20-25min, and then rinsing with clean water at room temperature.

[0011] The efficient soap washing is to collect the washing water in the ecological scouring and bleaching and transfer it to the soap washing process, and use the soap washing agent WO at a dosage of 2-5g / L, and select the half-tank water process for soap washing, the half-tank water soap washing process means that the soap washing liquid occupies half the volume of the dyeing tank.

[0012] The slurry in the low-carbon sizing comprises the following raw materials: 60-65 parts of corn modified starch and 30-55 parts of polyacrylic acid, and water is added to adjust the solid content of the slurry to 15.5-20.1%.

[0013] The specific steps of the natural finishing are: singeing and desizing the yarn-dyed fabric, then performing ecological softening and ecological absorption and drainage finishing, adjusting the pH value of the finishing liquid to neutral, drying after two immersions and two rollings, and then using super-soft air beating equipment to finish the fabric.

[0014] The specific steps of the green anti-wrinkle finishing are: singeing and desizing the yarn-dyed fabric, then finishing it with liquid ammonia, then pre-softening the fabric with an ecological softener, then cross-linking the fabric with an ecological tide cross-linking formaldehyde-free anti-wrinkle auxiliary agent, stacking it after drying, washing it with water, drying it to shape, and then finishing the fabric with super-soft air beating equipment.

[0015] The specific steps of the liquid ammonia natural finishing are: singeing, desizing and treating the yarn-dyed fabric with liquid ammonia for ecological softening and ecological absorption and discharge finishing, adjusting the pH value of the finishing liquid to neutral, drying after two immersions and two rollings, and then using super-softening equipment to finish the fabric.

[0016] A low-carbon color-woven fabric is produced by the production process of the low-carbon color-woven fabric.

[0017] The production process of the low-carbon color-woven fabric of the present invention, wherein the ecological scouring and bleaching uses a green and environmentally friendly composite bio-enzyme process to replace the traditional alkaline oxygen scouring and bleaching process, which can reduce the damage to the environment caused by bleaching and dyeing wastewater caused by the large-scale use of hazardous chemicals such as caustic soda, reduce the burden of sewage treatment, and reduce the COD value of the sewage discharge outlet from 3150-3650 mg / L to 2350-2855 mg / L; the high-efficiency soap washing not only has excellent floating color removal ability, improves color fastness, and reduces residual liquid chromaticity, but also saves 1-2 soap washings and reduces sewage and wastewater discharge; the low-carbon sizing uses the above sizing process, and the COD value of the sizing sewage discharge outlet is reduced from 10800-12100 mg / L to 7350-8150 mg / L.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) The low-carbon yarn-dyed fabric produced by the present invention is used in the production of shirts, which reduces carbon emissions by 9.5%-12.1% compared with traditional processes. Automated equipment is used in the sewing process to improve material accuracy and production line efficiency, reduce scraps and waste, and improve energy utilization.

[0020] (2) The production process of the low-carbon yarn-dyed fabric described in the present invention uses green and environmentally friendly bio-based additives during the finishing process, which greatly reduces the amount of petrochemical chemicals used.

[0021] (3) The low-carbon color-woven fabric prepared by the present invention meets the requirements of low-carbon products, green production, and environmentally friendly sewing. It is a low-carbon product that conforms to the development trend of green textiles. The fabric has ultra-low formaldehyde below 5PPM and abrasion resistance greater than 9600r. It is more durable and durable, and is healthy, green and sustainable. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with specific embodiments.

[0023] The raw materials and reagents used in the following examples and comparative examples are described as follows:

[0024] Penetrant WA-M is commercially available from Zibo Lurui Fine Chemical Co., Ltd.;

[0025] The refining agent SAE is commercially available from Zibo Lurui Fine Chemical Co., Ltd.;

[0026] Bioenzyme DS-HT is commercially available from Zibo Lurui Fine Chemical Co., Ltd.;

[0027] The hydrogen peroxide is commercially available common hydrogen peroxide;

[0028] Corn modified starch is commercially available common corn modified starch;

[0029] The polyacrylic acid is commercially available common polyacrylic acid;

[0030] PVA is commercially available from Anhui Wanwei High-Tech Materials Co., Ltd.;

[0031] Soaping agent WO is commercially available from Zibo Lurui Fine Chemical Co., Ltd.;

[0032] The bio-based softener Soft NTL is sold in Shanghai Nantai Industrial Co., Ltd.

[0033] The bio-based absorbent COMFORT NTL is sold in Shanghai Nantai Industrial Co., Ltd.

[0034] Silicone oil softener SMI-60 is commercially available from Zibo Lurui Fine Chemical Co., Ltd.;

[0035] Silicone oil softener DR-169 is commercially available from Zibo Lurui Fine Chemical Co., Ltd.;

[0036] Resin CR-ZFF is commercially available from Zibo Lurui Fine Chemical Co., Ltd.;

[0037] Catalyst LRMC is commercially available from Zibo Lurui Fine Chemical Co., Ltd.;

[0038] The fiber protection agent SF-P is commercially available from Zibo Lurui Fine Chemical Co., Ltd.;

[0039] Resin CR-MF is commercially available from Zibo Lurui Fine Chemical Co., Ltd.;

[0040] Catalyst CT-MC is commercially available from Zibo Lurui Fine Chemical Co., Ltd. The solid content and content described in the present invention refer to mass percentages. The parts described refer to parts by weight, and are specifically expressed in the same unit of mass in the embodiments.

[0041] Example 1

[0042] Low-carbon yarn-dyed fabric, made of 40-count cotton yarn, undergoes the following processing:

[0043] (1) Ecological cooking and bleaching

[0044] Place the 40-s loose-wound bobbin yarn of pure cotton into a high-temperature and high-pressure dyeing machine, inject ecological scouring and bleaching reagents, which include: penetrant WA-M 1g / L, refining agent SAE 2g / L, hydrogen peroxide 3g / L, and biological enzyme DS-HT 7g / L. Heat to 98°C and keep warm for 25 minutes. Rinse twice with clean water at room temperature in preparation for dyeing. Collect the clean water after the second rinse for soaping after dyeing.

[0045] (2) Dyeing and high-efficiency soap washing

[0046] Inject the prepared dye solution into the dyeing machine for yarn dyeing. After dyeing is completed, inject soaping agent WO at a dosage of 2g / L. At the same time, inject ecological boiling and bleaching rinse water to half of the dyeing tank for soaping.

[0047] (3) Low carbon sizing and weaving

[0048] The dyed warp yarn is sized with low-carbon slurry, which is composed of 65 kg corn modified starch and 55 kg polyacrylic acid. Water is added to adjust the solid content of the slurry to 20.1%. After sizing, the warp yarn is used for grey cloth weaving.

[0049] (4) Natural finishing

[0050] After the grey cloth is singed and desized, it is subjected to ecological softening and ecological absorption and drainage finishing on a tenter frame. The finishing liquid is a bio-based softener Soft NTL20g / L and a bio-based absorption and drainage agent COMFORT NTL20g / L. The pH value of the finishing liquid is adjusted to neutral. After two immersions and two rollings, it is dried at 130℃×1min, and then the fabric is finished with super-soft air beating equipment to improve the feel of the fabric. The fabric produced in this way is a low-carbon yarn-dyed fabric.

[0051] (5) Clothing application

[0052] The low-carbon color-dyed fabric is cut as required by an automatic cutting bed, the light-colored scraps of the cut pieces are collected for recycled cotton processing, and the qualified parts are processed into shirt parts and circulated through automatic hanging equipment for splicing in each process. The buttons are made of natural shellfish buttons produced by Weixing Button Company, and the collars are cut from recycled mineral water bottles during packaging.

[0053] Comparative Example 1

[0054] Ordinary yarn-dyed fabrics, made of 40-count cotton yarn, are processed as follows:

[0055] (1) Traditional alkaline oxygen bleaching

[0056] Place the 40-s loose-wound bobbin yarn of pure cotton into a high-temperature and high-pressure dyeing machine, inject the alkaline oxygen bleaching reagent: refining agent SAE 2g / L, hydrogen peroxide 5g / L, caustic soda 3g / L, heat to 100℃ and keep warm for 35 minutes, rinse with clean water at room temperature twice for dyeing.

[0057] (2) Dyeing and soaping

[0058] Inject the prepared dye solution into the dyeing machine to dye the yarn. After dyeing is completed, inject soaping solution WO at a dosage of 3g / L and soap wash twice.

[0059] (3) Sizing and weaving

[0060] The dyed warp yarn is sized with ordinary slurry, which is 55kg of modified corn starch, 45kg of polyacrylic acid, and 20kg of PVA. Water is added to adjust the solid content of the slurry to 20.1%. After sizing, the warp yarn is used for grey cloth weaving.

[0061] (4) General finishing

[0062] After the grey cloth is singed and desized, it is subjected to ordinary finishing on a tentering frame. The amount of silicone oil softener SMI-60 in the finishing liquid is 40g / L, and the pH value of the finishing liquid is adjusted to neutral. After two immersions and two rollings, it is dried at 130℃×1min.

[0063] (5) Clothing application

[0064] The fabrics are cut as required by the automatic cutting bed, and the qualified parts are processed into shirt parts respectively, which are transferred to each process for splicing through automatic hanging equipment. Plastic buttons are used for sewing, and plastic sheets are used for shirt collars during packaging.

[0065] Example 2

[0066] Low-carbon yarn-dyed fabric, made of 60-count cotton yarn, undergoes the following processing:

[0067] (1) Ecological cooking and bleaching

[0068] Place the 60-s loose-wound bobbin yarn of pure cotton into a high-temperature and high-pressure dyeing machine, inject ecological scouring and bleaching reagents, which include: penetrant WA-M 2g / L, refining agent SAE 3g / L, hydrogen peroxide 4g / L, and biological enzyme DS-HT 9g / L. Heat to 105°C and keep warm for 20 minutes. Rinse twice with clean water at room temperature in preparation for dyeing. Collect the clean water after the second rinse for soaping after dyeing.

[0069] (2) Dyeing and high-efficiency soap washing

[0070] Inject the prepared dye solution into the dyeing machine to dye the yarn. After dyeing is completed, inject soaping agent WO5g / L, and at the same time inject ecological rinsing water to half of the dyeing tank for soaping.

[0071] (3) Low carbon sizing and weaving

[0072] The dyed warp yarn is sized with low-carbon slurry, which is composed of 60 kg corn modified starch and 30 kg polyacrylic acid. Water is added to adjust the solid content of the slurry to 15.5%. After sizing, the warp yarn is used for grey cloth weaving.

[0073] (4) Green anti-wrinkle finishing

[0074] After the grey cloth is singed and desized, it is first treated with liquid ammonia. The fabric is pre-softened with an ecological softener on the tentering machine. The finishing liquid is a bio-based softener Soft NTL10g / L. The fabric is cross-linked using the ecological tide cross-linking process on the tentering machine. The ecological tide cross-linking process is resin CR-ZFF 200g / L, fiber protector SF-P10g / L, and catalyst LRMC100g / L. After drying, it is piled for 18 hours and washed. After washing, it is dried and shaped. Then, the fabric is finished with super soft air beating equipment to improve the feel of the fabric. The fabric produced in this way is a low-carbon color-dyed fabric.

[0075] (5) Clothing application

[0076] The low-carbon color-dyed fabric is cut as required through an automatic cutting bed, the light-colored scraps of the cut pieces are collected for recycled cotton processing, and the qualified parts are processed into shirt parts and spliced ​​through the automatic hanging equipment flow process. The buttons are made of natural shellfish buttons produced by Weixing Button Company, and the collars are cut from recycled mineral water bottles during packaging.

[0077] Comparative Example 2

[0078] Ordinary yarn-dyed fabric, made of 60-count cotton yarn, is processed as follows:

[0079] (1) Traditional alkaline oxygen bleaching

[0080] Place the 60-s loose-wound bobbin yarn of pure cotton into a high-temperature and high-pressure dyeing machine, inject the alkaline oxygen bleaching reagents: refining agent SAE 3g / L, hydrogen peroxide 6g / L, caustic soda 9g / L, heat to 105℃ and keep warm for 40min, rinse with clean water at room temperature twice for dyeing.

[0081] (2) Dyeing and soaping

[0082] Inject the prepared dye solution into the dyeing machine to dye the yarn. After dyeing is completed, inject soaping agent WO at a dosage of 5g / L and soap wash twice.

[0083] (3) Sizing and weaving

[0084] The dyed warp yarn is sized with ordinary slurry, which is 50kg of modified corn starch, 25kg of polyacrylic acid, and 15kg of PVA. Water is added to adjust the solid content of the slurry to 15.5%. After sizing, the warp yarn is used for grey cloth weaving.

[0085] (4) Ordinary moisture cross-linking finishing

[0086] After the grey fabric is singed and desized, it is first treated with liquid ammonia. On the tenter, ordinary softener is used to pre-soften the fabric. The amount of finishing liquid silicone oil softener DR-169 is 10g / L. On the tenter, ordinary tide cross-linking auxiliary agent is used to cross-link the fabric. The process is ordinary tide cross-linking resin CR-MF 200g / L, fiber protective agent 10g / L, catalyst CT-MC100g / L, and after drying, it is piled for 18h, washed with water, and dried and shaped after washing. Then it is softened on the tenter, and the amount of finishing liquid silicone oil softener SMI-60 is 10g / L. The pH value of the finishing liquid is adjusted to neutral, and it is dried at 130℃×1min after two dips and two rolls.

[0087] (5) Clothing application

[0088] The fabrics are cut as required by the automatic cutting bed, and the qualified parts are processed into shirt parts respectively, which are spliced ​​through the automatic hanging equipment flow process. Plastic buttons are used for sewing, and plastic sheets are used for shirt collars during packaging.

[0089] Example 3

[0090] Low-carbon yarn-dyed fabric, made of 50-count cotton yarn, undergoes the following processing:

[0091] (1) Ecological cooking and bleaching

[0092] Place the 50-s loose-wound bobbin yarn of pure cotton into a high-temperature and high-pressure dyeing machine, inject ecological scouring and bleaching reagents, which include: penetrant WA-M 1.5g / L, refining agent SAE 2.5g / L, hydrogen peroxide 4g / L, and biological enzyme DS-HT 8g / L. Heat to 105°C and keep warm for 23 minutes. Rinse with clean water at room temperature twice in preparation for dyeing. Collect the clean water after the second rinse for soaping after dyeing.

[0093] (2) Dyeing and high-efficiency soap washing

[0094] Inject the prepared dye solution into the dyeing machine to dye the yarn. After dyeing is completed, inject soaping agent WO3g / L, and at the same time inject ecological boiling and bleaching rinse water to half of the dyeing tank for soaping.

[0095] (3) Low carbon sizing and weaving

[0096] The dyed warp yarn is sized with low-carbon slurry, which is 62 kg of corn modified starch and 52 kg of polyacrylic acid. Water is added to adjust the solid content of the slurry to 18.9%. After sizing, the warp yarn is used for grey cloth weaving.

[0097] (4) Liquid ammonia natural finishing

[0098] After the grey cloth is singed, desized and treated with liquid ammonia, it is subjected to ecological softening and ecological absorption and drainage finishing on a stenter. The finishing liquid is ecological softener Soft NTL15g / L and ecological absorption and drainage reagent COMFORT NTL10g / L. The pH value of the finishing liquid is adjusted to neutral. After two immersions and two rollings, it is dried at 130℃×1min. Then, the fabric is beaten and finished with super-soft equipment to improve the feel of the fabric. The fabric produced in this way is a low-carbon yarn-dyed fabric.

[0099] (5) Clothing application

[0100] The low-carbon color-dyed fabric is cut as required by an automatic cutting bed, the light-colored scraps of the cut pieces are collected for recycled cotton processing, and the qualified parts are processed into shirt parts and circulated through automatic hanging equipment for splicing in each process. The buttons are made of natural shellfish buttons produced by Weixing Button Company, and the collars are cut from recycled mineral water bottles during packaging.

[0101] Comparative Example 3

[0102] Ordinary yarn-dyed fabrics, made of 50-count cotton yarn, are processed as follows:

[0103] (1) Traditional alkaline oxygen bleaching

[0104] Place the 50-s loose-wound bobbin yarn of pure cotton into a high-temperature and high-pressure dyeing machine, inject the alkaline oxygen bleaching reagents: refining agent SAE 2.5g / L, hydrogen peroxide 5g / L, caustic soda 5g / L, heat to 105℃ and keep warm for 35min, rinse with clean water at room temperature twice for dyeing.

[0105] (2) Dyeing and soaping

[0106] Inject the prepared dye solution into the dyeing machine to dye the yarn. After dyeing is completed, inject soaping agent WO at a dosage of 3g / L and soap wash twice.

[0107] (3) Sizing and weaving

[0108] The dyed warp yarn is sized with a low-carbon slurry, which is composed of 45 kg of modified corn starch, 39 kg of polyacrylic acid, and 30 kg of PVA. Water is added to adjust the solid content of the slurry to 18.9%. After sizing, the warp yarn is used for grey cloth weaving.

[0109] (4) General finishing with liquid ammonia

[0110] After the grey cloth is singed, desized and treated with liquid ammonia, it is subjected to ordinary finishing on a tenter frame. The amount of silicone oil softener SMI-60 in the finishing liquid is 25g / L, and the pH value of the finishing liquid is adjusted to neutral. After two immersions and two rollings, it is dried at 130℃×1min.

[0111] (5) Clothing application

[0112] The fabrics are cut as required by the automatic cutting bed, and the qualified parts are processed into shirt parts respectively, which are transferred to each process for splicing through automatic hanging equipment. Plastic buttons are used for sewing, and plastic sheets are used for shirt collars during packaging.

[0113] The fabrics prepared in the above embodiments and comparative examples were tested for various performance indicators: the COD value at the sewage outlet was tested according to the dichromate method for determination of chemical oxygen demand of water quality in GB / T11914-1989; formaldehyde was tested according to GB / T2912.1-2009 Determination of formaldehyde in textiles Part 1: free and hydrolyzed formaldehyde; wear resistance was tested according to GB / T21196.2-2007 Martindale method for textiles for fabric wear resistance; carbon emission data was tested according to ISO14040 Life Cycle Assessment-Principles and Framework, ISO14044 Life Cycle Assessment-Requirements and Guidelines, ISO14067 Greenhouse Gas-Product Carbon Footprint Quantification Requirements and Guidelines, and the test results are shown in Table 1. The "from cradle to gate" mentioned in carbon emission refers to the corresponding experiment using the cradle to gate evaluation method, including all substantial emissions generated from the acquisition of raw materials, product manufacturing process, product transportation to warehouse, and product production energy consumption.

[0114] Table 1 Test results

[0115]

[0116] It can be seen from the test results that in the production and processing of fabrics in the embodiment, the COD value of the sewage discharge outlet of the bleaching, dyeing and sizing process is significantly reduced compared with the control ratio, and the reduction rate is 18.0%~32.6%, which reduces the burden of sewage treatment and reduces the harm to the environment. The water consumption per ton of yarn in the soap washing process of the embodiment is also significantly reduced compared with the control ratio, with a reduction rate of 60.7%, 64.4% and 71.1%, respectively, saving water resources. The formaldehyde value of the clothing made by the embodiment is also significantly reduced compared with the control ratio, with a reduction rate of 86.7%, 91.4% and 92.3%, respectively, which is more conducive to the safety and health of the wearer. The wear resistance of the clothing made by the embodiment is significantly improved compared with the control ratio, with an improvement rate of 55.2%, 52.4% and 67.9%, respectively. The clothing is more durable and wearable, reducing the consumption and waste of clothing and corresponding resources. The carbon emissions of the fabrics of the embodiment are significantly reduced compared with the fabrics of the control ratio, with a reduction rate of 10.7%, 12.1% and 9.5%, respectively. The fabrics are processed by the production process of the present invention, and the carbon emissions are reduced compared with the ordinary process.

[0117] Of course, the above contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and equal changes and improvements made by ordinary technicians in the technical field within the essential scope of the present invention should all fall within the scope of the patent coverage of the present invention.

Claims

1. A production process for low-carbon yarn-dyed fabrics, characterized in that: The method includes ecological scalding, dyeing and high-efficiency soaping of yarn, low-carbon sizing of the treated yarn, weaving of yarn-dyed fabrics, and natural finishing, liquid ammonia natural finishing or green anti-wrinkle finishing of the yarn-dyed fabrics to obtain low-carbon yarn-dyed fabrics; The ecological scouring and bleaching adopts biological enzyme pretreatment, and the biological enzyme process includes the use of 1-2g / L of penetrant WA-M, 2-3g / L of refining agent SAE, 3-6g / L of hydrogen peroxide, 7-9g / L of biological enzyme DS-HT, keeping warm at 98-105°C for 20-25min, and then rinsing with clean water at room temperature; The slurry in the low-carbon sizing comprises the following raw materials: 60-65 parts of corn modified starch, 30-55 parts of polyacrylic acid, and water is added to adjust the solid content of the slurry to 15.5-20.1%; The specific steps of the natural finishing are: singeing and desizing the yarn-dyed fabric, and then performing ecological softening and ecological absorption and drainage finishing, adjusting the pH value of the finishing liquid to neutral, drying after two dips and two rolls, and then finishing the fabric with super soft air beating equipment; The specific steps of the liquid ammonia natural finishing are: singeing, desizing, and liquid ammonia treatment of the yarn-dyed fabric, followed by ecological softening and ecological absorption and drainage finishing, adjusting the pH value of the finishing solution to neutral, drying after two dips and two rolls, and then finishing the fabric with super-softening equipment; The additive used in eco-softening is bio-based softener Soft NTL; the additive used in eco-absorption and exhaust finishing is COMFORT NTL; The high-efficiency soap washing is to collect the rinsing water in the ecological boiling and bleaching and transfer it to the soap washing process, use the soap washing agent WO at a dosage of 2-5g / L, and use the half-tank water process for soap washing; The specific steps of the green anti-wrinkle finishing are: singeing and desizing the yarn-dyed fabric, and then finishing it with liquid ammonia, and then pre-softening the fabric with an ecological softener, and then cross-linking the fabric with an ecological tide cross-linking formaldehyde-free anti-wrinkle auxiliary agent, and then stacking after drying, washing, drying and shaping, and then finishing the fabric with a super soft air beating device; The ecological softener is a bio-based softener Soft NTL; the ecological cross-linking formaldehyde-free anti-wrinkle auxiliary agent includes a formaldehyde-free anti-wrinkle agent CR-ZFF, a fiber protective agent SF-P, and a catalyst LRMC.

2. The production process of low-carbon yarn-dyed fabric according to claim 1, characterized in that: The fabric is woven from pure cotton fiber or a blend of pure cotton fiber and cellulose fiber; the pure cotton fiber includes one of Xinjiang long-staple cotton fiber, Pima cotton fiber, and ordinary cotton fiber; the cellulose fiber includes one of hemp fiber, Tencel fiber, Lyocell fiber, and viscose fiber.

3. A low-carbon yarn-dyed fabric, characterized in that: The low-carbon yarn-dyed fabric is produced by the production process of the low-carbon yarn-dyed fabric described in any one of claims 1-2.

4. The use of the low-carbon yarn-dyed fabric according to claim 3, characterized in that: Low-carbon yarn-dyed fabrics are used to make shirts. During the production process, environmentally friendly materials and energy-saving equipment are used, and fabric scraps are recycled and reused.

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