A sunflower pattern dyeing method for garment tie-dyeing

Abstract

This application relates to the field of garment dyeing, specifically disclosing a method for dyeing a sunflower pattern for tie-dyeing garments. The method includes the following steps: placing the garment in a dye vat and heating it for dyeing; then cooling, washing, and dehydrating, with a liquid retention rate of approximately 80% ± 5%; laying the garment flat, pressing out a natural curve with curved steel wire strips, and then securing it tightly at a predetermined position with high-temperature nylon cable ties to prevent dye penetration; the tied-patterned garment is then placed back into the dye vat for dyeing. After completion, the cable ties are removed, and the garment is soaped in a soaping solution, then soaked in a softener and dried. This sunflower pattern dyeing method for tie-dyeing garments has the advantage of solving the problem of unstable pattern and color control in the tie-dyeing process.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of garment dyeing, more particularly, it relates to a sunflower pattern dyeing method for garment tie-dyeing. BACKGROUND

[0002] In today's rapidly changing era, consumers' demand for clothing has gradually shifted from traditional functionality and durability to the pursuit of individualization, uniqueness and artistry. The rise of this trend not only drives innovation in the field of clothing design, but also brings unprecedented development opportunities for traditional crafts such as tie-dyeing technology.

[0003] Tie-dyeing process involves manually binding, folding, twisting and other treatments of fabric, and then immersing it in dye. Since the local fabric is tightly bound, the dye cannot penetrate uniformly, resulting in natural, random and richly layered patterns on the fabric. These patterns are both regular and full of changes, and each work is unique, perfectly meeting the pursuit of individualization and uniqueness by modern consumers. At the same time, tie-dyeing colors are soft and natural, adding a warm, retro charm to clothing, which is deeply welcomed by the market.

[0004] Although the tie-dyeing process has great potential in individualized clothing design, its industrialization process faces many problems. Traditional tie-dyeing process highly depends on manual operation, from designing patterns, binding fabric to dyeing, untying, washing, each step requires delicate manual operation, which is time-consuming and inefficient, making it difficult to meet the needs of mass production. In addition, the concentration of dye, temperature, soaking time, and fabric material and binding method during tie-dyeing process all affect the final color effect and pattern shape, making it difficult to control color and pattern, and it is difficult to achieve standardization and consistency of batch production. SUMMARY

[0005] In order to solve the problem of unstable pattern and color control of garment tie-dyeing process, the present application provides a sunflower pattern dyeing method for garment tie-dyeing.

[0006] The sunflower pattern dyeing method for garment tie-dyeing provided by the present application adopts the following technical solution:

[0007] A sunflower pattern dyeing method for garment tie-dyeing, characterized in that it comprises the following steps:

[0008] Prepare a dyeing vat with a bath ratio of 1:(11-13), a dye concentration of 0.5-1.5%, and add leveling agent 0.5-1.5g / L, chelating agent 0.1-1g / L, and acetic acid to adjust the pH value of the dyeing solution to 5.5-6.5;

[0009] Put the clothes into the dyeing vat, heat to 90-97℃, keep for 20-40min for dyeing, take out the clothes after dyeing, cool the clothes to 35-45℃, wash for 5-15min to remove the floating color, dehydrate the dyed clothes for 60-80s, control the wet rate at 80%±5%;

[0010] Lay the dehydrated clothes flat, press the arc-shaped strips on the surface of the clothes according to the size of the clothes, push the clothes from one end of the arc-shaped strip to the other end along the arc direction, form folds with equal height, and fasten the clothes at equal distances using multiple ties after pushing to the other end; put the clothes with the pattern tied back into the dyeing vat, rotate the vat drum at a speed of 20-40r / min, after dyeing is completed, untie the nylon ties, shake the clothes, put the clothes into the soaping solution, heat to 75-85℃, keep for 15-30min, then cool to 45-55℃, keep for 5-15min;

[0011] Put the clothes into the softener, keep at 35-45℃, soak for 15-30min, take out the treated clothes, and dry until completely dry.

[0012] By adopting the above technical scheme, in the dyeing stage, the temperature rising speed, dyeing temperature and time are strictly controlled to ensure that the dye can fully penetrate into the fibers of the clothes, while avoiding the decomposition or color change of the dye caused by overheating, thereby ensuring the stability and consistency of the dyeing effect. Using the arc-shaped strip as an auxiliary tool can ensure that the clothes form uniform and conform to the sunflower pattern design during the pushing process. The shape and size of the arc-shaped strip are adjusted according to the size of the clothes and the required pattern, thereby ensuring the accuracy and consistency of the pleats. Pushing from one end of the arc-shaped strip along the circular arc direction from bottom to top makes the formation of pleats more natural and highly equal. By fastening multiple straps at equal distances, not only the shape and position of the pleats are fixed, but also the stability of the pattern is enhanced. In the subsequent dyeing process, these fastened pleats can resist the flow and penetration of the dyeing liquid, making the final pattern clearer and more stable, and the dyeing liquid can penetrate more uniformly into the fibers of the clothes, especially in the concave and convex parts of the pleats, thereby improving the uniformity and depth of dyeing. At the same time, due to the presence of pleats, the flow and distribution of dyeing liquid on the surface of the clothes also become more complex and interesting, adding more levels and three-dimensionality to the sunflower pattern, reducing defects such as bleeding and shading during the dyeing process. After dyeing, through soaping and softener treatment, the floating color and impurities on the surface of the clothes are further removed, improving the softness and wearing comfort of the clothes. At the same time, these post-processing steps also help to consolidate the dyeing effect, making the color more lasting and bright. The entire dyeing process strictly controls the parameters and conditions of each step from dye preparation to post-processing, striving for precision and efficiency at each step, thereby greatly improving the sunflower pattern dyeing quality of the finished clothes. The finished product not only has bright colors and clear patterns, but also has soft hand feeling and comfortable wearing.

[0013] Optionally, the leveling agent comprises 20-30% of plant extract, 5-10% of nano silicon dioxide, 40-60% of polyethylene glycol and 15-25% of surfactant by mass percentage.

[0014] By adopting the above technical solution, the plant extract as a natural ingredient has good dispersibility and permeability, which can help the dye to be more evenly distributed in the fibers of the clothes, reducing the color spots and color flower phenomenon. At the same time, the small particle structure of nano-silicon dioxide further enhances the dispersion effect of the dye, making the dyeing more uniform and delicate. Polyethylene glycol (PEG) as a commonly used non-ionic surfactant has good wetting and film-forming properties. During the dyeing process, PEG can wrap the dye molecules to form a thin film, which helps the dye to better adhere to the fibers of the clothes, improving the dyeing fastness and color brightness. Surfactants play a key role in the leveling agent, which can reduce the interfacial tension between the dyeing liquid and the fibers of the clothes, promoting the penetration of dye molecules into the fibers. This not only improves the dyeing efficiency, but also makes the dyeing more thorough and the color more saturated. The use of plant extracts makes the leveling agent more environmentally friendly, reducing the use of chemical synthetics, meeting the modern textile industry's requirements for green and sustainable development. At the same time, nano-silicon dioxide as an inorganic nanomaterial also has high biological safety and environmental friendliness.

[0015] Optionally, the plant extract includes 30-50 parts by weight of madder extract, 40-80 parts by weight of tea tree essential oil, and 20-30 parts by weight of sodium alginate.

[0016] By adopting the above technical solution, the active ingredients in madder can be firmly combined with the fibers of the clothes, improving the fastness and color stability of the dyeing. Madder extract is a natural source, which is more environmentally friendly than chemical dyes. Tea tree essential oil has strong antibacterial properties, which can effectively inhibit the growth of bacteria, mold and other microorganisms. Tea tree essential oil can also improve the hand feeling of clothes, making them softer and more comfortable. At the same time, it can also promote the penetration and uniform distribution of dyes in fibers, improving the dyeing quality. Sodium alginate as an ideal paste for reactive dye printing plays an important role in the dyeing process. The negative charge in its molecular structure helps to promote dyeing and prevent dye from combining with paste, thereby improving the uniformity and clarity of dyeing. Sodium alginate also has good film-forming properties, which can form a protective film on the surface of the fibers of the clothes, enhancing the adhesion between the dye and the fibers, making the dyeing more firm and durable.

[0017] Optionally, the preparation method of the madder extract is as follows:

[0018] Add madder root powder into the reaction container, and add an ethanol solution with a mass concentration of 65% to 95%, the mass addition ratio of madder root powder to ethanol solution being 1:(1-3), vacuumize the reaction container to 0.7-1.1 bar, and supplement nitrogen to maintain stable pressure;

[0019] The stirring device with mechanical rotation speed of 3000-5000 r / min is used to stir the reaction container, the stirring time is 5-8 min, and the stirring is repeated for 3-5 times. After the stirring is completed, the filter screen is used to filter the extract to obtain the madder extract;

[0020] The activated carbon with mass of 10-50% of the extract is added into the madder extract, and after being uniformly stirred, it is placed for 4-8 h. Then, the activated carbon and solid impurities are removed by filtration to obtain the decolorized madder extract;

[0021] The decolorized madder extract is concentrated by rotary evaporation, the vacuum degree is set to 100-200 mbar, the water bath temperature is set to 50-60 ℃, and the concentration is continued for 3-5 h to obtain the concentrated madder extract;

[0022] The concentrated madder extract is centrifuged at 1500-4000 r / min for 3-10 min, and the supernatant is reserved to obtain the madder extract.

[0023] By using the above technical scheme, the 65% to 95% ethanol solution is used as the extraction agent, and the mass addition ratio of the madder root powder to the ethanol solution is controlled to be 1:(1-3), which is beneficial to the sufficient dissolution of the effective components in the madder and improves the extraction efficiency. The reaction container is vacuumized to 0.7-1.1 bar, and nitrogen is supplemented to maintain the pressure stable, which can effectively prevent the ethanol from volatilizing and the oxidation reaction from occurring, and protect the active components in the madder from being damaged. The stirring device with mechanical rotation speed of 3000-5000 r / min is used to stir the reaction container, which ensures that the madder root powder and the ethanol solution are in sufficient contact and improves the extraction effect. The stirring is repeated for 3-5 times, which can further increase the completeness of the extraction. The activated carbon with mass of 10-50% of the extract is added into the madder extract, and the adsorption of the activated carbon removes the pigments and impurities in the extract, so that the extract is more clear and transparent. This step is of great significance for the purification and application of the subsequent extract. The decolorized madder extract is concentrated by rotary evaporation, the vacuum degree and the water bath temperature are set, the ethanol solvent is continuously evaporated, and the concentrated madder extract is obtained, which effectively improves the concentration of the extract. The madder extract obtained by the above preparation method has high purity and stability, and can fully retain the effective components and active substances in the madder.

[0024] Optionally, the chelating agent is selected from tartaric acid and sodium hexametaphosphate configured in a mass ratio of 1:(1-1.5).

[0025] By adopting the above technical solution, tartaric acid, as a polycarboxylic acid, has the ability to form stable complexes with metal ions. Before dyeing, tartaric acid can complex with metal ions such as calcium and magnesium in water to form insoluble precipitates, effectively removing these metal ions. This not only reduces the impact of metal ions on dyes, but also improves the dye fixation rate and dyeing effect. Sodium hexametaphosphate also has the ability to complex with metal ions, especially in hard water conditions, it can form soluble complexes with calcium, magnesium ions and other metal ions, "locking" the metal ions to achieve the purpose of soft water. This complexation helps to reduce the risk of metal ions combining with dyes to form insoluble precipitates during dyeing, improving the uniformity and stability of dyeing. Through the synergistic effect of tartaric acid and sodium hexametaphosphate, the impact of metal ions on dyes can be effectively prevented, maintaining the color stability of dyes. This helps to reduce color differences, color spots and other problems that may occur during dyeing, improving the quality of finished dyeing products.

[0026] Optionally, the soaping bath ratio is 1:10, and the soaping agent selected is RC-425 soaping agent with a concentration of 1.3-1.7g / L.

[0027] By adopting the above technical solution, RC-425 soaping agent exhibits excellent stain removal ability within this concentration range. It can effectively remove unfastened dyes, hydrolyzed dyes, oils and other impurities on the surface and inside of the fabric, ensuring the cleanliness and brightness of the finished dyeing product. The soaping agent can remove stains while also providing some protection to the fabric fibers. It can prevent the fibers from being damaged during washing, maintaining the softness and comfort of the fabric. As an environmentally friendly product, the low concentration use of RC-425 soaping agent helps to reduce pollutant emissions in wastewater. At the same time, the product has good biodegradability and will not cause long-term pollution to the environment.

[0028] Optionally, the softener bath ratio is 1:10, and the softener concentration is 2g / L.

[0029] Optionally, the softener selected is a modified silicone softener.

[0030] By adopting the above technical solution, a bath ratio of 1:10 ensures that the softener can fully and uniformly penetrate into the fabric fibers, avoiding uneven distribution of the softener due to excessively high or low bath ratios. This uniform treatment helps to improve the overall softness and hand consistency of the fabric. The modified silicone softener can firmly adhere to the surface of the fibers, forming a lubricating film that reduces the friction coefficient between fibers, improving the softness and smoothness of the fabric. Compared to traditional softeners, the modified silicone softener has the advantages of not yellowing the fabric, not changing the color of the dye, good softness, and water and wrinkle resistance.

[0031] In summary, the present application has the following beneficial effects:

[0032] 1. Due to the present application, high-quality dyeing of clothing tie-dye sunflower patterns is achieved by precisely controlling the dye preparation, dyeing temperature and time, innovative tie-dyeing process and meticulous post-treatment steps. From the dyeing stage to ensure sufficient dye penetration, to the innovative tie-dyeing method using arc-shaped steel wire and nylon tie to create a natural and smooth flower pattern, to the soaping and softener treatment to improve the quality of the clothes, each step is carefully designed and optimized. Finally, the tie-dyed products have bright colors, clear patterns and soft feel, significantly improving the artistic beauty and wearing comfort of the products.

[0033] 2. In the present application, the leveling agent preferably uses plant extracts to provide natural dispersion and penetration, nano-silicon dioxide to enhance the dispersion effect of dyes, polyethylene glycol to improve dye adhesion and color brightness, and surfactants to promote dye penetration and improve dyeing efficiency. Achieve environmentally friendly and efficient dyeing uniformity, while meeting the pursuit of green and sustainable development of modern textile industry.

[0034] 3. In the present application, plant extracts are preferably used, including madder extract, tea tree essential oil and sodium alginate. Madder extract not only enhances dyeing fastness and color stability, but also has environmental advantages; tea tree essential oil imparts antibacterial and soft properties to clothes, and helps dyes penetrate uniformly; sodium alginate improves dyeing uniformity and clarity through its unique molecular structure, and enhances dye adhesion. DETAILED DESCRIPTION

[0035] The present application will be further described in detail below in conjunction with examples. It is particularly noted that: in the following examples, the specific conditions are not specified, and the conventional conditions or the conditions recommended by the manufacturer are used. In the following examples, the raw materials used can be obtained from ordinary commercial sources unless otherwise specified.

[0036] Preparation example of madder extract

[0037] Preparation example 1

[0038] The preparation method of madder extract is as follows:

[0039] Fresh, disease-free and completely dried madder roots are selected as raw materials. After washing and drying, the madder roots are ground into fine powder using a mechanical grinding machine.

[0040] 10 kg of madder root powder is added to the reaction container of the flash extractor, and 20 kg of 80% ethanol solution is added.

[0041] The reaction container is vacuumed to 0.9 bar, and nitrogen is added to maintain stable pressure.

[0042] Start the ultrasonic-assisted flash extraction system, set the mechanical rotation speed to 4000 r / min, and perform repeated extraction for 4 times, with each extraction time being 6 min.

[0043] After the extraction is completed, filter the extraction liquid using filter paper to remove the madder root residues, and obtain the clear madder extraction liquid.

[0044] Using the activated carbon decolorization method, add 30% of the mass of the extraction liquid to the extraction liquid, stir uniformly, and then stand for 6 h. Then, filter to remove the activated carbon and impurities, and obtain the decolorized madder extraction liquid.

[0045] Concentrate the decolorized madder extraction liquid by rotary evaporation, set the vacuum degree to 100 mbar, and set the water bath temperature to 55°C, to remove most of the ethanol solvent, and obtain the concentrated madder extraction.

[0046] Centrifuge the concentrated madder extraction, with the centrifugation condition being 2500 r / min for 5 min, to remove the precipitates and impurities, and retain the supernatant. Seal the supernatant in a clean container, and obtain the final madder extraction.

[0047] Preparation example of a leveling agent

[0048] Preparation example 2

[0049] Preparation of a leveling agent

[0050] Mix 4 kg of madder extraction, 6 kg of tea tree oil (type 008 of Zhongnongkehua), and 2.5 kg of sodium alginate (effective ingredient content 99%, execution standard CP2020) in a reaction container, the madder extraction is prepared by preparation example 1, and uniformly mix by mechanical stirring, to obtain a plant extraction.

[0051] Heat 2.5 kg of the plant extraction, 0.5 kg of nano silicon dioxide with a purity of >99%, 5 kg of polyethylene glycol-400, and 2 kg of sodium dodecylbenzenesulfonate (type BW2559, purity ≥95%) in a reaction container to 60°C, and uniformly mix by mechanical stirring, to obtain a leveling agent.

[0052] Preparation example 3

[0053] Preparation of a leveling agent, which is different from preparation example 2 in that 4 kg of tea tree oil and 2 kg of sodium alginate are mixed in a reaction container, and uniformly mixed by mechanical stirring, to obtain a plant extraction.

[0054] Preparation example 4

[0055] Preparation of a leveling agent, which is different from preparation example 2 in that 5 kg of madder extraction and 8 kg of tea tree oil are mixed in a reaction container, the madder extraction is prepared by preparation example 1, and uniformly mixed by mechanical stirring, to obtain a plant extraction.

[0056] Preparation Example 5

[0057] Preparation of a leveling agent, different from Preparation Example 2 in that no plant extract is added to the leveling agent.

[0058] Preparation Example 6

[0059] Preparation of a leveling agent, different from Preparation Example 2 in that no nanosilica is added to the leveling agent.

[0060] Example

[0061] Example 1

[0062] A sunflower pattern dyeing method for garment tie-dyeing:

[0063] Prepare a dyeing vat according to a bath ratio of 1:12, wherein the concentration of the dye (Solvent Red 168) is 1%, the concentration of the leveling agent is 1 g / L, the leveling agent is prepared according to Preparation Example 2, the concentration of the chelating agent is 0.5 g / L, and the chelating agent is tartaric acid (purity > 99%) and sodium hexametaphosphate (purity ≥ 70%) configured according to a mass ratio of 1:1.2. Add acetic acid with a mass concentration of 10% to the dyeing vat to adjust the pH value of the dyeing solution to 5.5-6.5.

[0064] Put the clothes into the dyeing vat, heat to 95°C, and keep for 30 min for dyeing. After dyeing, take out the clothes, cool to 40°C, and wash for 10 min to remove the floating color. The dyed clothes are subjected to 70 s dehydration treatment to control the wet pick-up rate at 80%±5%.

[0065] Lay the dehydrated clothes flat, and according to the pre-designed pattern of the clothes, bend the steel wire strip to the required curvature. In this example, an arc-shaped steel wire strip with a central angle of 120° is used. Place one end of the steel wire strip on the clothes, measure and mark the position of the outermost circle from the side seam of the clothes, and similarly, measure and mark the position of the outermost circle from the underarm of the other side of the clothes. Press the steel wire strip on the clothes along the marked positions. From the position of the steel wire strip close to the side seam of the clothes, push the clothes upwards to form uniform wrinkles. In this example, the wrinkle height is 2 cm. Pay attention to the force during the pushing process to ensure that the wrinkles are uniform and natural. After pushing to the other end, use high-temperature nylon ties to fasten the clothes and the steel wire strip together to ensure that the ties are tight and not easy to loosen, so as to prevent the dyeing solution from penetrating during the dyeing process and causing unclear patterns. Confirm that one side of the clothes is linear and the other side is arc-shaped to form the basis of the fan-shaped curvature. According to the pre-designed interval, in this example, every 10 cm below the fixed point is fastened with high-temperature nylon ties.

[0066] Put the clothes with the pattern tied back into the dyeing vat, rotate the vat roller at a speed of 30 r / min, keep for 20 min, after the dyeing is completed, untie the nylon tie, shake the clothes, put the clothes into the soaping solution, the soaping solution bath ratio is 1:10, the soaping solution is RC-425 soaping agent with a concentration of 1.5 g / L, heat to 80℃, keep for 20 min, then cool to 50℃, keep for 10 min; put the clothes into the modified silicone softener (type 204 from Yingyu Chemical Co., Ltd., viscosity 1500-2000 cs), the softener bath ratio is 1:10, the softener concentration is 2 g / L, keep at 40℃, soak for 20 min, take out the treated clothes, and dry until completely dry.

[0067] Example 2

[0068] A sunflower pattern dyeing method for ready-made clothes tie-dyeing: different from example 1 is that the leveling agent is prepared from preparation example 3.

[0069] Example 3

[0070] A sunflower pattern dyeing method for ready-made clothes tie-dyeing: different from example 1 is that the leveling agent is prepared from preparation example 4.

[0071] Example 4

[0072] A sunflower pattern dyeing method for ready-made clothes tie-dyeing: different from example 1 is that the leveling agent is prepared from preparation example 5.

[0073] Example 5

[0074] A sunflower pattern dyeing method for ready-made clothes tie-dyeing: different from example 1 is that the leveling agent is prepared from preparation example 6.

[0075] Example 6

[0076] A sunflower pattern dyeing method for ready-made clothes tie-dyeing: different from example 1 is that the soaping solution bath ratio is 1:8.

[0077] Example 7

[0078] A sunflower pattern dyeing method for ready-made clothes tie-dyeing: different from example 1 is that the soaping solution bath ratio is 1:12.

[0079] Example 8

[0080] A sunflower pattern dyeing method for ready-made clothes tie-dyeing: different from example 1 is that the softener bath ratio is 1:8.

[0081] Example 9

[0082] A sunflower pattern dyeing method for garment tie-dyeing: different from example 1 is that the softener bath ratio is 1:12.

[0083] Example 10

[0084] A sunflower pattern dyeing method for garment tie-dyeing: different from example 1 is that the softener is selected as silicone oil.

[0085] Comparative example

[0086] Comparative example 1

[0087] A sunflower pattern dyeing method for garment tie-dyeing: different from example 1 is that the leveling agent is type 102 leveling agent.

[0088] Comparative example 2

[0089] A sunflower pattern dyeing method for garment tie-dyeing: different from example 1 is that the concentration of the leveling agent is 0.1 g / L.

[0090] Comparative example 3

[0091] A sunflower pattern dyeing method for garment tie-dyeing: different from example 1 is that the concentration of the leveling agent is 2 g / L.

[0092] Comparative example 4

[0093] A sunflower pattern dyeing method for garment tie-dyeing: different from example 1 is that the chelating agent is selected as tartaric acid.

[0094] Performance detection test

[0095] Detection method

[0096] The finished pattern is compared with the design draft using image processing software to check the difference between the tie-dyeing pattern area and the preset pattern area.

[0097] The edge and center of the tie-dyeing print are detected for color difference using an Agilent Ci7x00 series desktop spectrophotometer.

[0098] Table 1 detection results

[0099]

[0100]

[0101] As can be seen from Example 1 and Comparative Example 1 in combination with Table 1, the plant extract as a natural ingredient has good dispersibility and permeability, which can help the dye to be more evenly distributed in the fibers of the clothes, reducing color spots and color flower phenomenon. At the same time, the small particle structure of nano-silicon dioxide further enhances the dispersion effect of the dye, making the dyeing more uniform and delicate. Polyethylene glycol (PEG) as a commonly used non-ionic surfactant has good wetting and film-forming properties. During the dyeing process, PEG can wrap the dye molecules to form a thin film, which helps the dye to better adhere to the fibers of the clothes, improving the color fastness and color brightness. Surfactants play a key role in leveling agents, which can reduce the interfacial tension between the dyeing liquid and the fibers of the clothes, promoting the penetration of dye molecules into the fibers. This not only improves the dyeing efficiency, but also makes the dyeing more thorough and the color more saturated. The use of plant extract makes the leveling agent more environmentally friendly, reducing the use of chemical synthesis, meeting the modern textile industry's requirements for green and sustainable development. At the same time, nano-silicon dioxide as an inorganic nanomaterial also has high biological safety and environmental friendliness.

[0102] As can be seen from Example 1 and Comparative Examples 2-3 in combination with Table 1, the uniformity of dyeing is insufficient when the concentration of the leveling agent is low, and when the concentration of the leveling agent is too high, it will produce excessive dye resistance, resulting in a decrease in dye uptake and an increase in color difference.

[0103] As can be seen from Example 1 and Comparative Example 4 in combination with Table 1, through the synergistic effect of tartaric acid and sodium hexametaphosphate, the influence of metal ions on the dye can be effectively prevented, and the color stability of the dye can be maintained. This helps to reduce color difference, color flower and other problems during dyeing, and improves the quality of the finished dyeing product.

[0104] As can be seen from Examples 1-5 in combination with Table 1, the active ingredients in madder can be firmly combined with the fibers of the clothes, improving the fastness and color stability of the dyeing. Sodium alginate as an ideal paste for reactive dye printing plays an important role in the dyeing process. The negative charge in its molecular structure helps to promote dyeing and prevent dye from combining with the paste, thereby improving the uniformity and clarity of the dyeing. Sodium alginate also has good film-forming properties, which can form a protective film on the surface of the fibers of the clothes, enhancing the adhesion between the dye and the fibers, making the dyeing more firm and durable. Plant extract as a natural ingredient has good dispersibility and permeability, which can help the dye to be more evenly distributed in the fibers of the clothes, reducing color spots and color flower phenomenon. At the same time, the small particle structure of nano-silicon dioxide further enhances the dispersion effect of the dye, making the dyeing more uniform and delicate.

[0105] It can be seen from the combination of Example 1 and Examples 6-10 and Table 1 that RC-425 soaping agent exhibits excellent soil removal ability in this concentration range. It can effectively remove unfastened dyes, hydrolyzed dyes, oils and other impurities on the surface and inside of the fabric, thereby ensuring the cleanliness and color brightness of the dyed finished product. The bath ratio of 1:10 ensures that the softener can fully and uniformly penetrate into the fabric fibers, avoiding the problem of uneven distribution of softener caused by too high or too low bath ratio. The modified silicone softener can enhance the binding force between the dye and the fiber, improve the dye fixation efficiency, thereby reducing the possibility of dye shedding during subsequent processing or use, which also helps to reduce color difference.

[0106] The specific embodiments are only an explanation of the present application, which is not a limitation of the present application. Those skilled in the art can make modifications to the embodiments without creative contribution after reading the specification, but as long as it is within the scope of the claims of the present application, it is protected by the patent law.

Claims

1. A sunflower pattern dyeing method for garment tie-dyeing, characterized in that, The method comprises the following steps: Prepare a dye vat according to a bath ratio of 1:(11-13), a dye concentration of 0.5-1.5%, and add 0.5-1.5 g / L of a leveling agent and 0.1-1 g / L of a chelating agent, and add acetic acid to adjust the pH value of the dye solution to 5.5-6.5; Put the clothes into the dye vat, heat to 90-97 DEG C, keep for 20-40 min for dyeing, take out the clothes after dyeing, cool to 35-45 DEG C, wash for 5-15 min to remove the floating color, and perform 60-80 s dehydration treatment on the dyed clothes to control the liquid rate at 80%±5%; Lay the dehydrated clothes flat, press the arc-shaped strips on the surface of the clothes according to the size of the clothes, push the clothes from one end of the arc-shaped strip along the arc direction from bottom to top to form wrinkles with equal height, and fasten the clothes at equal distances using multiple straps after pushing to the other end; Put the clothes with the fixed pattern back into the dye vat, rotate the dye vat roller at a speed of 20-40 r / min, after dyeing is completed, untie the nylon straps, shake the clothes, put the clothes into a soaping solution, heat to 75-85 DEG C, keep for 15-30 min, then cool to 45-55 DEG C, keep for 5-15 min; Put the clothes into a softener, keep at 35-45 DEG C, soak for 15-30 min, take out the treated clothes, and perform drying treatment until completely dry. The leveling agent comprises, by mass percentage, 20-30% of plant extract, 5-10% of nano silicon dioxide, 40-60% of polyethylene glycol, and 15-25% of surfactant, the plant extract comprises, by weight, 30-50 parts of madder extract, 40-80 parts of tea tree essential oil, and 20-30 parts of sodium alginate, and the preparation method of the madder extract is as follows: Add madder root powder into a reaction container, and add an ethanol solution with a mass concentration of 65% to 95%, the mass addition ratio of the madder root powder to the ethanol solution being 1:(1-3), vacuumize the reaction container to 0.7-1.1 bar, and supplement nitrogen to maintain stable pressure; Use a stirring device with a mechanical rotation speed of 3000-5000 r / min to stir the reaction container, the stirring time being 5-8 min, and the stirring being repeated for 3-5 times, after the stirring is completed, filter the extract liquid using a filter screen to obtain madder extract liquid; Add 10-50% of activated carbon of the mass of the extract liquid into the madder extract liquid, uniformly stir, and then stand for 4-8 h, and then filter to remove the activated carbon and solid impurities to obtain decolorized madder extract liquid; Perform rotary evaporation concentration on the decolorized madder extract liquid, set the vacuum degree to 100-200 mbar, the water bath temperature to 50-60 DEG C, and the duration to 3-5 h to obtain concentrated madder extract; Centrifuge the concentrated madder extract at 1500-4000 r / min for 3-10 min, and retain the supernatant to obtain madder extract; The chelating agent is prepared by mixing tartaric acid and sodium hexametaphosphate at a mass ratio of 1:(1-1.5), the softener bath ratio is 1:10, the softener concentration is 2 g / L, and the softener is a modified organic silicon softener.

2. The sunflower pattern dyeing method for garment tie dyeing according to claim 1, characterized in that: The soaping liquor bath ratio is 1:10, and the soaping liquor is RC-425 soaping agent with a concentration of 1.3-1.7 g / L. The soaping liquor bath ratio is 1:10, and the soaping liquor is RC-425 soaping agent with a concentration of 1.3-1.7 g / L.

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