Tying method for water ripple pattern tie-dyeing

Abstract

The present application relates to the technical field of dyeing, and in particular to a tying method for water ripple pattern tie-dyeing, comprising the following steps: S1: tie-dyeing pre-treatment: soaking and dewatering a fabric to be dyed; S2: tying: laying said fabric obtained in S1 flat, winding the fabric onto a tying tube starting from one end of the fabric, and after winding, pushing the fabric form one end of the tying tube to the other end of the tying tube, and using a fixing string to wrap the fabric for fixation; S3: tie-dyeing: immersing the fabric obtained in S2 into a dye solution, then carrying out dyeing and draining; and S4: tie-dyeing post-treatment: untying the fabric obtained in S3, and then soaping, softening and drying same. The tying method for water ripple pattern tie-dyeing in the present application can effectively improve the consistency and stability of the printing quality of dyed fabrics, thereby improving product reproducibility and achieving market-oriented development.

Description

A method for tie-dyeing water ripple patterns Technical Field

[0001] The present application relates to the technical field of dyeing, for example, a method for tie-dyeing a water ripple pattern. Background Art

[0002] Tie-dyeing is a traditional Chinese folk craft. With its handmade production and unique color-bleeding mechanism, traditional tie-dyeing has gained widespread popularity worldwide and has had a profound impact. However, numerous constraints, such as the long operation time, unstable color and pattern control, and the single, flat, and monotonous presentation of handmade production, have led to high market prices, easy fading of fabrics, and significant unpredictability in pattern design, hindering the market development of this traditional craft. The innovative development of tie-dyeing is the best way to inherit and continue this traditional craft. To maintain the quality and artistic appeal of tie-dyed fabrics while improving dyeing efficiency and the stability of dyed fabrics, traditional tie-dyeing requires technical exploration of the tools, materials, and methods used for tying and dyeing, and urgently requires effective industrialization methods.

[0003] Summary of the Invention

[0004] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0005] In order to effectively improve the consistency and stability of the printing quality of dyed textiles, improve product reproducibility and achieve market development, the present application provides a water ripple pattern tie-dyeing method.

[0006] The present application provides a method for tie-dyeing a water ripple pattern using the following technical solutions:

[0007] A method for tie-dyeing a water ripple pattern comprises the following steps:

[0008] S1: Tie-dyeing pre-treatment: soaking and dehydrating the fabric to be dyed;

[0009] S2: Tying: Lay the fabric to be dyed obtained in S1 flat, wind the fabric on a tying tube from one end, push the fabric from one end of the tying tube to the other end, and use a fixing line to wrap the fabric to fix it;

[0010] S3: tie-dyeing: immerse the fabric to be dyed obtained in S2 into the dye solution, dye, and drain;

[0011] S4: Tie-dyeing post-treatment: The fabric obtained in S3 is untied, soaped, softened, and dried to obtain

[0012] By adopting the above technical solution, using auxiliary tools such as the flower-tying tube, and using appropriate tie-dyeing techniques to roll up the fabric to be dyed, and through appropriate tie-dyeing methods and post-dyeing processing procedures, the entire tie-dyeing process is taken into account. The rolling technique is controlled by auxiliary tools, and the density of the rolling, the pushing force, and the tightness of the tying are accurately controlled within a certain range. The fabric to be dyed is rolled onto the flower-tying tube of a certain specification. A little tension is added during rolling to ensure that the clothes fit the tube and are straightened. After rolling, both hands are fixed in position and the clothes are pushed toward one end of the tube. The pushing gesture should be careful, and the force in all directions around the tube should be consistent so that the spacing of the patterns after dyeing is uniform. After pushing to the required position, it is then wound and fixed. During the dyeing process, the fabric maintains a fixed shape and appropriate tightness after being exposed to water and high temperature expansion. The tie-dyed fabric shows a layered and three-dimensional water ripple effect.

[0013] Then, through the post-processing process, the dyed fabric is made to have uniform color and stable color fixation. Through the softening process, the fabric feels soft and plump. Then it is dried. Due to the influence of wrinkles, the fabric is dried at different times and to different degrees, which promotes fixation with the fibers and fixes the dye depth and transition effects, forming a tie-dyed fabric with rich colors and uniform transition of light and dark, thus showing a special effect of natural color halo, soft edges and rich layers. By achieving consistency and stability of printing quality, the water wave texture tie-dyed fabric has high product reproducibility and can achieve market development.

[0014] In a specific embodiment, the flower tube has a length of 70-75 cm and an outer diameter of 6-10 cm.

[0015] By adopting the above technical solution, the design of the auxiliary tool, a tie-dyed tube, is described; by rolling the fabric to be dyed onto a tie-dyed tube of a certain specification, the stability and reproducibility of the pattern of the tie-dyed fabric can be improved, so that the texture of the pattern after tie-dying can achieve batch consistency.

[0016] In a specific embodiment, the step S1 is specifically as follows: rinsing the fabric with the pre-treatment liquid at a bath ratio of 1:2-8 and a temperature of 40-55° C., dehydrating after soaking, and achieving a liquid carrying rate of 80-85%.

[0017] By adopting the above technical solution, the pre-treatment process improves the penetration and wetting of the fabric to be dyed and enhances the surface adsorbability of the fabric to be dyed by adjusting the liquid carrying rate of the fabric to be dyed.

[0018] In a specific embodiment, the pretreatment solution is water-based and includes the following components: 0-4 g / L of thiourea dioxide, 0.5-1 g / L of sodium hydrosulfite, and 5-9 g / L of sodium carbonate.

[0019] By adopting the above technical solution, hydrosulfite is added to water, and the fabric is bleached by reduction dyeing through sodium bisulfite. The bleached fabric has bright color and is not easy to fade.

[0020] Thiourea dioxide is a new type of environmentally friendly reducing agent that can make up for the poor stability of hydrosulfite during color stripping. It has the advantages of high reduction potential and good thermal stability. Under the action of thiourea dioxide, the conjugated color system -N=N- of the fabric is broken to generate colorless or light-colored small molecule amino compounds, thereby achieving bleaching and decolorization.

[0021] In a specific embodiment, with water as the system, the dye solution in S3 includes the following components: 1-3 g / L of resist salt, 0-3 g / L of fatty alcohol polyoxyethylene ether, 2-8 wt% of plant indigo dye and 1-3 g / L of caustic soda, wherein the mass ratio of the resist salt to the fatty alcohol polyoxyethylene ether is 1:0-3.

[0022] By adopting the above technical solution, the addition of anti-dyeing salt to the dye solution promotes dyeing, preventing the dye solution from being contaminated and discolored during dyeing, and helping to protect the color from damage. Fatty alcohol polyoxyethylene ether has excellent emulsifying and dispersing properties. It is composed of fatty alcohol and polyoxyethylene chains, and its structure contains long carbon chains and hydroxyl-terminated polyoxyethylene chains, which have good hydrophilicity and oil solubility. When printing and dyeing wool and nylon composite fabrics, the long carbon chains in the fatty alcohol polyoxyethylene ether can penetrate into the core layer of the fabric and interact with the amino and carboxyl groups of the wool fiber. They also entangle and bind with the amide groups on the main chain of the nylon molecule, restricting the movement of the wool fiber, further significantly improving the shrinkage resistance of the fabric and increasing the breaking strength of the tie-dyed fabric.

[0023] The compounding of resist salt and fatty alcohol polyoxyethylene ether in a certain proportion can enhance the permeability and surface activity of the fabric, reduce the dyeing time, and improve the aesthetic effect of tie-dyed fabric with bright color, natural color gradient and rich layers.

[0024] Plant indigo dye has excellent light and weather fastness and heat stability. As a reducing dye, when dyeing fabrics, the dye penetrates the fabric and is absorbed by the fibers. It is then oxidized by air to turn into indigo, and the fabric gradually appears blue. Adding caustic soda can adjust the pH value of the dye solution and inhibit harmful substances, keeping the solution in the container stable to achieve the optimal state for printing and dyeing.

[0025] In a specific embodiment, the dye solution is prepared by the following method: heating water to 50-65° C. in proportion, then adding fatty alcohol polyoxyethylene ether and resist salt, and stirring for 3-5 minutes; heating to 70-90° C., adding plant indigo dye, and stirring for 10-16 minutes; finally, adding caustic soda, stirring for 20-35 minutes, to obtain the dye solution, and keeping warm for later use.

[0026] By adopting the above technical solution, an aqueous solution at a certain temperature helps to better disperse the fatty alcohol polyoxyethylene ether and the anti-dyeing salt. After heating, the dye is added to reduce the aggregation degree of the dye and shift the absorption wavelength toward the long-wave direction, which helps to develop the color and has a dark effect. Finally, caustic soda is added to maintain the pH of the solution, thereby improving the dyeing uniformity and repeatability, so that the plants produce a unique dyeing and finishing effect visually.

[0027] In a specific embodiment, in the soaping in S4, the fabric is untied and immersed in 0.8-1.5 g / L soaping agent, maintained at 80-95°C.

[0028] By adopting the above technical solution, a certain concentration of soaping agent can effectively prevent the undyed part of the dyed fabric from being contaminated, and helps to remove intermediates that have not undergone coupling reaction during the indigo dyeing process. It also has a slow dyeing effect, changes the physical state of the dye on the fiber, and improves the color fastness of the dye.

[0029] In a specific embodiment, the acid washing in S4 is as follows: adding 1-3 g / L acetic acid to water, washing at 50-60° C. for 10-15 minutes, and then dehydrating.

[0030] By adopting the above technical solution, the fabric is acid-washed after alkali boiling and printing to remove the calcium carbonate precipitation that causes the fabric to feel rough; the low-ash bleached gauze fabric is produced, which can significantly improve the problem of low coloration rate of cashmere fabric after dyeing, and also avoids residual alkali on the fabric. When the temperature rises during drying, the alkali on the fabric will be concentrated and cause damage to the fabric fibers.

[0031] In a specific embodiment, the acid-washed fabric is softened in S4 by adding 2-4 g / L of softener to water, and then dehydrating the fabric after softening to a liquid content of 70-75%.

[0032] By employing this technical solution, fabric softener treatment can replenish the natural oils lost during the tie-dyeing and bleaching processes of natural fibers, improving the smoothness and cohesion (cohesion) of the fabric, reducing the coefficient of friction between fibers, lowering fiber surface tension, and enhancing the fabric's softness. Tie-dyed products treated with this softening agent exhibit a softer hue, a pleasant hand, and are less prone to wrinkling and discoloration, addressing the serious fading problem of tie-dyed products and making the patterns on the dyed fabric more vivid and lifelike.

[0033] In a specific embodiment, the whitening treatment in S4 is as follows: adding 0.5-0.8 g / L of soda ash and 1-1.5 g / L of hydrogen peroxide to water at a bath ratio of 1:12-14, followed by dehydration.

[0034] By adopting the above technical solution and adding hydrogen peroxide for oxidation and whitening, the whiteness, brightness and vividness of the fabric can be improved, making the water wave texture of the fabric more layered and presenting a three-dimensional gradient effect of the pattern.

[0035] In summary, this application includes at least one of the following beneficial technical effects:

[0036] 1. Using a tie-dyeing tube, the fabric to be dyed is rolled and stacked using an appropriate tie-dyeing technique. The entire tie-dyeing process is balanced through appropriate tie-dyeing methods and post-dyeing treatments. Auxiliary tools control the rolling technique, accurately controlling the density of the rolls, the pushing force, and the tightness of the ties within a certain range. During the dyeing process, the fabric expands in water and at high temperatures, maintaining a fixed shape and appropriate tightness. The resulting tie-dyed fabric exhibits a distinct, three-dimensional ripple effect. Pre-dyeing treatment and dye liquor preparation ensure full fabric penetration and emulsification, improving tie-dyeing efficiency. The dyed fabric achieves uniform color and high color fastness, resulting in rich colors and even transitions between light and dark shades. By achieving consistent and stable printing quality, the ripple texture of tie-dyed fabrics is highly reproducible and can be commercialized.

[0037] 2. The compounding of resist salt and fatty alcohol polyoxyethylene ether in a certain proportion can enhance the permeability and surface activity of the fabric, reduce the dyeing time, and restrict the activity of wool fibers through the interaction between fatty alcohol polyoxyethylene ether and the active functional groups of tie-dyed fabrics, which can further greatly improve the shrinkage resistance of the fabric and the breaking strength of the tie-dyed fabric, making the tie-dyed fabric present a bright color, natural color halo, and rich layering aesthetic effect.

[0038] 3. Hydrogen peroxide is oxidized and whitened in alkaline solution. By adjusting a certain bath ratio and appropriate temperature, the whiteness, brightness and vividness of the fabric can be improved, making the water wave texture of the fabric more layered and presenting a three-dimensional gradient effect of the pattern.

[0039] Still other aspects will become apparent upon reading and understanding the detailed description. DETAILED DESCRIPTION

[0040] Fatty alcohol polyoxyethylene ether model: Peregal O-20; resist salt is sodium 3-nitrobenzenesulfonate, purchased from Wuhan Jiyesheng Chemical Co., Ltd.; plant indigo dye model: 3R, purchased from Wuxi Huichang Chemical Dye Co., Ltd.; flake caustic soda (99% content) was purchased from Dongguang County Hengye Chemical Products Co., Ltd.; thiourea dioxide was purchased from Baiyundu (Shanghai) Biotechnology Co., Ltd.; insurance powder was purchased from Changzhou Huixinmei Chemical Co., Ltd.; sodium carbonate was purchased from Jiangsu Caiwei Biotechnology Co., Ltd.; soap detergent model: RC-425; acetic acid was purchased from Shandong Jinli Chemical Co., Ltd.; softener is octadecyl diester quaternary ammonium salt, model: YH-866; tie-dyed fabric is 60N / 1Z twist shrink-proof RWS wool 88 / 12 white regenerated nylon core-spun yarn single yarn jersey.

[0041] Unless otherwise specified, the raw materials used in this application are conventional commercial brands or obtained through conventional preparation processes.

[0042] Preparation Example

[0043] Dye solution preparation example

[0044] Preparation Example 1

[0045] Pour water into the dye vat and heat it to 50°C. Then add 1g / L of resist salt and stir for 3 minutes. Heat the mixture to 70°C and add 2wt% of plant indigo dye and stir for 10 minutes. Finally, add 1g / L of caustic soda and stir for 20 minutes to obtain the dye solution. Keep the mixture warm for later use.

[0046] Preparation Example 2

[0047] Pour water into the dye vat and heat it to 65°C. Then add 3g / L of resist salt and stir for 5 minutes. Heat the mixture to 90°C and add 8wt% of plant indigo dye and stir for 16 minutes. Finally, add 3g / L of caustic soda and stir for 35 minutes to obtain the dye solution. Keep the mixture warm for later use.

[0048] Preparation Example 3

[0049] Pour water into the dye vat and heat it to 65°C. Then add 3g / L fatty alcohol polyoxyethylene ether and 3g / L resist salt so that the mass ratio of resist salt to fatty alcohol polyoxyethylene ether is 1:1, and stir for 5 minutes. Heat to 90°C and add 8wt% plant indigo dye, stir for 16 minutes. Finally, add 3g / L caustic soda and stir for 35 minutes to obtain the dye solution, which is kept warm for later use.

[0050] Preparation Example 4

[0051] Pour water into the dye vat and heat it to 65°C. Then add 3g / L fatty alcohol polyoxyethylene ether and 1g / L resist salt so that the mass ratio of resist salt to fatty alcohol polyoxyethylene ether is 1:3, and stir for 5 minutes. Heat to 90°C and add 8wt% plant indigo dye, stir for 16 minutes. Finally, add 3g / L caustic soda and stir for 35 minutes to obtain the dye solution, which is kept warm for later use.

[0052] Preparation Example 5

[0053] Pour water into the dye vat and heat to 65°C, then add 3g / L fatty alcohol polyoxyethylene ether and stir for 5 minutes; heat to 90°C, add 8wt% plant indigo dye and stir for 16 minutes; finally, add 3g / L caustic soda and stir for 35 minutes to obtain the dye solution, which is kept warm for later use.

[0054] Preparation Example 6

[0055] Pour water into the dye vat and heat to 65°C. Then add 4g / L fatty alcohol polyoxyethylene ether and 1g / L resist salt and stir for 5 minutes. Heat to 90°C and add 8wt% plant indigo dye and stir for 16 minutes. Finally, add 3g / L caustic soda and stir for 35 minutes to obtain the dye solution. Keep warm for later use.

[0056] Example

[0057] Example 1

[0058] A method for tie-dyeing a water ripple pattern comprises the following steps:

[0059] S1: Tie-dye pretreatment: Add 1g / L hydrosulfite and 5g / L sodium carbonate to a certain amount of water, stir thoroughly and dissolve to obtain a pretreatment solution; rinse the fabric to be dyed with the pretreatment solution at a bath ratio of 1:2, at a temperature of 40°C, soak for 10 minutes, and then dehydrate to a liquid pick-up rate of 80%;

[0060] S2: Tying: Wrap the fabric from one end around a polyester plastic tube with a length of 70 cm and an outer diameter of 10 cm. After winding, push the fabric from one end of the polyester plastic tube to the other end of the tube and secure it with cotton thread.

[0061] S3: Tie-dyeing: The fabric to be dyed obtained in S2 is completely immersed in the dye solution prepared in Preparation Example 1, with a bath ratio of 1:20, and the temperature is raised to 100°C at a rate of 5°C / min, and the dyeing is carried out for 30 minutes, and the color is matched and the water is drained;

[0062] S4: Tie-dyeing post-treatment: the fabric obtained in S3 is untied and immersed in 0.8g / L RC-425 with a bath ratio of 1:10, heated to 80℃, soaped and dehydrated; the whitening solution contains 0.5g / L soda ash and 1g / L hydrogen peroxide with a bath ratio of 1:12, immersed at 50℃ for 2min, and then dehydrated; acid washing: water is added to the vat, 1g / L acetic acid is added, the bath ratio is 1:10, maintained at 50℃, washed for 10min, and dehydrated for 3min; softening: water is added to the vat, 2g / L softener is added, softened and then dehydrated, maintaining the liquid content at 70%; drying: drying at 60℃ for 20min, cold air is blown, and the fabric is taken out of the vat to obtain a tie-dye fabric with a water ripple pattern.

[0063] Example 2

[0064] A method for tie-dyeing a water ripple pattern comprises the following steps:

[0065] S1: Tie-dye pretreatment: Add 0.5g / L hydrosulfite and 9g / L sodium carbonate to a certain amount of water and stir thoroughly to dissolve to obtain a pretreatment solution; rinse the fabric to be dyed with the pretreatment solution at a bath ratio of 1:8, at a temperature of 55°C, soak for 10 minutes, and then dehydrate to a liquid pick-up rate of 85%;

[0066] S2: Tying: Wrap the fabric from one end around a polyester plastic tube with a length of 75 cm and an outer diameter of 6 cm. After winding, push the fabric from one end of the polyester plastic tube to the other end of the tube and secure it with cotton thread.

[0067] S3: Tie-dyeing: The fabric to be dyed obtained in S2 is completely immersed in the dye solution prepared in Preparation Example 1, with a bath ratio of 1:20, and the temperature is raised to 100°C at a rate of 5°C / min, and the dyeing is carried out for 30 minutes, and the color is matched and the water is drained;

[0068] S4: Tie-dyeing post-treatment: the fabric obtained in S3 is untied and immersed in 1.5g / L RC-425 with a bath ratio of 1:10, heated to 95°C, soaped and dehydrated; the whitening solution contains 0.8g / L soda ash and 1.5g / L hydrogen peroxide with a bath ratio of 1:14, immersed at 50°C for 2 minutes, and then dehydrated; acid washing: water is added to the vat, 3g / L acetic acid is added, the bath ratio is 1:10, maintained at 60°C, washed for 15 minutes, and dehydrated for 3 minutes; softening: water is added to the vat, 4g / L softener is added, softened and then dehydrated, maintaining the liquid content at 75%; drying: drying at 80°C for 20 minutes, cold air is applied, and the fabric is taken out of the vat to obtain a tie-dye fabric with a water ripple pattern.

[0069] Example 3

[0070] A method for tie-dyeing a water ripple pattern comprises the following steps:

[0071] S1: Tie-dye pretreatment: Add 0.5 g / L hydrosulfite, 1 g / L thiourea dioxide, and 9 g / L sodium carbonate to a certain amount of water and stir thoroughly to dissolve to obtain a pretreatment solution; rinse the fabric to be dyed with the pretreatment solution at a bath ratio of 1:8, at a temperature of 55°C, soak for 10 minutes, and then dehydrate to a liquid pick-up rate of 85%;

[0072] S2: Tying: Wrap the fabric from one end around a polyester plastic tube with a length of 75 cm and an outer diameter of 6 cm. After winding, push the fabric from one end of the polyester plastic tube to the other end of the tube and secure it with cotton thread.

[0073] S3: Tie-dyeing: The fabric to be dyed obtained in S2 is completely immersed in the dye solution prepared in Preparation Example 1, with a bath ratio of 1:20, and the temperature is raised to 100°C at a rate of 5°C / min, and the dyeing is carried out for 30 minutes, and the color is matched and the water is drained;

[0074] S4: Tie-dyeing post-treatment: the fabric obtained in S3 is untied and immersed in 1.5g / L RC-425 with a bath ratio of 1:10, heated to 95°C, soaped and dehydrated; the whitening solution contains 0.8g / L soda ash and 1.5g / L hydrogen peroxide with a bath ratio of 1:14, immersed at 50°C for 2 minutes, and then dehydrated; acid washing: water is added to the vat, 3g / L acetic acid is added, the bath ratio is 1:10, maintained at 60°C, washed for 15 minutes, and dehydrated for 3 minutes; softening: water is added to the vat, 4g / L softener is added, softened and then dehydrated, maintaining the liquid content at 75%; drying: drying at 80°C for 20 minutes, cold air is applied, and the fabric is taken out of the vat to obtain a tie-dye fabric with a water ripple pattern.

[0075] Example 4

[0076] A method for tie-dyeing a water ripple pattern comprises the following steps:

[0077] S1: Tie-dye pretreatment: Add 0.5 g / L hydrosulfite, 4 g / L thiourea dioxide, and 9 g / L sodium carbonate to a certain amount of water and stir thoroughly to dissolve to obtain a pretreatment solution; rinse the fabric to be dyed with the pretreatment solution at a bath ratio of 1:8, at a temperature of 55°C, soak for 10 minutes, and then dehydrate to a liquid pick-up rate of 85%;

[0078] S2: Tying: Wrap the fabric from one end around a polyester plastic tube with a length of 75 cm and an outer diameter of 6 cm. After winding, push the fabric from one end of the polyester plastic tube to the other end of the tube and secure it with cotton thread.

[0079] S3: Tie-dyeing: The fabric to be dyed obtained in S2 is completely immersed in the dye solution prepared in Preparation Example 1, with a bath ratio of 1:20, and the temperature is raised to 100°C at a rate of 5°C / min, and the dyeing is carried out for 30 minutes, and the color is matched and the water is drained;

[0080] S4: Tie-dyeing post-treatment: the fabric obtained in S3 is untied and immersed in 1.5g / L RC-425 with a bath ratio of 1:10, heated to 95°C, soaped and dehydrated; the whitening solution contains 0.8g / L soda ash and 1.5g / L hydrogen peroxide with a bath ratio of 1:14, immersed at 50°C for 2 minutes, and then dehydrated; acid washing: water is added to the vat, 3g / L acetic acid is added, the bath ratio is 1:10, maintained at 60°C, washed for 15 minutes, and dehydrated for 3 minutes; softening: water is added to the vat, 4g / L softener is added, softened and then dehydrated, maintaining the liquid content at 75%; drying: drying at 80°C for 20 minutes, cold air is applied, and the fabric is taken out of the vat to obtain a tie-dye fabric with a water ripple pattern.

[0081] Example 5

[0082] A method for tie-dyeing a water ripple pattern comprises the following steps:

[0083] S1: Tie-dye pretreatment: Add 0.5g / L hydrosulfite and 9g / L sodium carbonate to a certain amount of water, stir thoroughly to dissolve to obtain a pretreatment solution; rinse the fabric to be dyed with the pretreatment solution at a bath ratio of 1:8, at a temperature of 55°C, soak for 10 minutes, and then dehydrate, with a liquid pick-up rate of 85%;

[0084] S2: Tying: Wrap the fabric from one end around a polyester plastic tube with a length of 75 cm and an outer diameter of 6 cm. After winding, push the fabric from one end of the polyester plastic tube to the other end of the tube and secure it with cotton thread.

[0085] S3: Tie-dyeing: The fabric to be dyed obtained in S2 is completely immersed in the dye solution prepared in Preparation Example 1, with a bath ratio of 1:20, and the temperature is raised to 100°C at a rate of 5°C / min, and the dyeing is carried out for 30 minutes, and the color is matched and the water is drained;

[0086] S4: Tie-dyeing post-treatment: the fabric obtained in S3 is untied and immersed in 1.5g / L RC-425 with a bath ratio of 1:10, heated to 95°C, soaped and dehydrated; the whitening solution contains 0.8g / L soda ash and 1.5g / L hydrogen peroxide with a bath ratio of 1:14, immersed at 50°C for 2 minutes, and then dehydrated; acid washing: water is added to the vat, 5g / L acetic acid is added, the bath ratio is 1:10, maintained at 60°C, washed for 15 minutes, and dehydrated for 3 minutes; softening: water is added to the vat, 4g / L softener is added, softened and then dehydrated, maintaining the liquid content at 75%; drying: drying at 80°C for 20 minutes, cold air is applied, and the fabric is taken out of the vat to obtain a tie-dye fabric with a water ripple pattern.

[0087] Example 6

[0088] A method for tie-dyeing a water ripple pattern comprises the following steps:

[0089] S1: Tie-dye pretreatment: Add 0.5g / L hydrosulfite and 9g / L sodium carbonate to a certain amount of water, stir thoroughly to dissolve to obtain a pretreatment solution; rinse the fabric to be dyed with the pretreatment solution at a bath ratio of 1:8, at a temperature of 55°C, soak for 10 minutes, and then dehydrate, with a liquid pick-up rate of 85%;

[0090] S2: Tying: Wrap the fabric from one end around a polyester plastic tube with a length of 75 cm and an outer diameter of 6 cm. After winding, push the fabric from one end of the polyester plastic tube to the other end of the tube and secure it with cotton thread.

[0091] S3: Tie-dyeing: The fabric to be dyed obtained in S2 is completely immersed in the dye solution prepared in Preparation Example 1, with a bath ratio of 1:20, and the temperature is raised to 100°C at a rate of 5°C / min, and the dyeing is carried out for 30 minutes, and the color is matched and the water is drained;

[0092] S4: Tie-dyeing post-treatment: the fabric obtained in S3 is untied and immersed in 1.5g / L RC-425 with a bath ratio of 1:10, heated to 95°C, soaped and dehydrated; the whitening solution contains 0.8g / L soda ash and 1.5g / L hydrogen peroxide with a bath ratio of 1:16, immersed at 50°C for 2 minutes, and then dehydrated; acid washing: water is added to the vat, 3g / L acetic acid is added, the bath ratio is 1:10, maintained at 60°C, washed for 15 minutes, and dehydrated for 3 minutes; softening: water is added to the vat, 4g / L softener is added, softened and then dehydrated, maintaining the liquid content at 75%; drying: drying at 80°C for 20 minutes, cold air is applied, and the fabric is taken out of the vat to obtain a tie-dye fabric with a water ripple pattern.

[0093] Example 7

[0094] A method for tie-dyeing a water ripple pattern comprises the following steps:

[0095] S1: Tie-dye pretreatment: Add 0.5g / L hydrosulfite and 9g / L sodium carbonate to a certain amount of water, stir thoroughly to dissolve to obtain a pretreatment solution; rinse the fabric to be dyed with the pretreatment solution at a bath ratio of 1:8, at a temperature of 55°C, soak for 10 minutes, and then dehydrate, with a liquid pick-up rate of 85%;

[0096] S2: Tying: Wrap the fabric from one end around a polyester plastic tube with a length of 75 cm and an outer diameter of 6 cm. After winding, push the fabric from one end of the polyester plastic tube to the other end of the tube and secure it with cotton thread.

[0097] S3: Tie-dyeing: The fabric to be dyed obtained in S2 is completely immersed in the dye solution prepared in Preparation Example 2, with a bath ratio of 1:20, and the temperature is raised to 100°C at a rate of 5°C / min, and the dyeing is carried out for 30 minutes, and the color is matched and the water is drained;

[0098] S4: Tie-dyeing post-treatment: the fabric obtained in S3 is untied and immersed in 1.5g / L RC-425 with a bath ratio of 1:10, heated to 95°C, soaped and dehydrated; the whitening solution contains 0.8g / L soda ash and 1.5g / L hydrogen peroxide with a bath ratio of 1:14, immersed at 50°C for 2 minutes, and then dehydrated; acid washing: water is added to the vat, 3g / L acetic acid is added, the bath ratio is 1:10, maintained at 60°C, washed for 15 minutes, and dehydrated for 3 minutes; softening: water is added to the vat, 4g / L softener is added, softened and then dehydrated, maintaining the liquid content at 75%; drying: drying at 80°C for 20 minutes, cold air is applied, and the fabric is taken out of the vat to obtain a tie-dye fabric with a water ripple pattern.

[0099] Example 8

[0100] A method for tie-dyeing a water ripple pattern comprises the following steps:

[0101] S1: Tie-dye pretreatment: Add 0.5g / L hydrosulfite and 9g / L sodium carbonate to a certain amount of water, stir thoroughly to dissolve to obtain a pretreatment solution; rinse the fabric to be dyed with the pretreatment solution at a bath ratio of 1:8, at a temperature of 55°C, soak for 10 minutes, and then dehydrate, with a liquid pick-up rate of 85%;

[0102] S2: Tying: Wrap the fabric from one end around a polyester plastic tube with a length of 75 cm and an outer diameter of 6 cm. After winding, push the fabric from one end of the polyester plastic tube to the other end of the tube and secure it with cotton thread.

[0103] S3: Tie-dyeing: The fabric to be dyed obtained in S2 is completely immersed in the dye solution prepared in Preparation Example 3, with a bath ratio of 1:20, and the temperature is raised to 100°C at a rate of 5°C / min. The dyeing is carried out for 30 minutes, the color is matched, and the water is drained;

[0104] S4: Tie-dyeing post-treatment: the fabric obtained in S3 is untied and immersed in 1.5g / L RC-425 with a bath ratio of 1:10, heated to 95°C, soaped and dehydrated; the whitening solution contains 0.8g / L soda ash and 1.5g / L hydrogen peroxide with a bath ratio of 1:14, immersed at 50°C for 2 minutes, and then dehydrated; acid washing: water is added to the vat, 3g / L acetic acid is added, the bath ratio is 1:10, maintained at 60°C, washed for 15 minutes, and dehydrated for 3 minutes; softening: water is added to the vat, 4g / L softener is added, softened and then dehydrated, maintaining the liquid content at 75%; drying: drying at 80°C for 20 minutes, cold air is applied, and the fabric is taken out of the vat to obtain a tie-dye fabric with a water ripple pattern.

[0105] Example 9

[0106] A method for tie-dyeing a water ripple pattern comprises the following steps:

[0107] S1: Tie-dye pretreatment: Add 0.5g / L hydrosulfite and 9g / L sodium carbonate to a certain amount of water, stir thoroughly to dissolve to obtain a pretreatment solution; rinse the fabric to be dyed with the pretreatment solution at a bath ratio of 1:8, at a temperature of 55°C, soak for 10 minutes, and then dehydrate, with a liquid pick-up rate of 85%;

[0108] S2: Tying: Wrap the fabric from one end around a polyester plastic tube with a length of 75 cm and an outer diameter of 6 cm. After winding, push the fabric from one end of the polyester plastic tube to the other end of the tube and secure it with cotton thread.

[0109] S3: Tie-dyeing: The fabric to be dyed obtained in S2 is completely immersed in the dye solution prepared in Preparation Example 4, with a bath ratio of 1:20, and the temperature is raised to 100°C at a rate of 5°C / min, and the dyeing is carried out for 30 minutes, and the color is matched and the water is drained;

[0110] S4: Tie-dyeing post-treatment: the fabric obtained in S3 is untied and immersed in 1.5g / L RC-425 with a bath ratio of 1:10, heated to 95°C, soaped and dehydrated; the whitening solution contains 0.8g / L soda ash and 1.5g / L hydrogen peroxide with a bath ratio of 1:14, immersed at 50°C for 2 minutes, and then dehydrated; acid washing: water is added to the vat, 3g / L acetic acid is added, the bath ratio is 1:10, maintained at 60°C, washed for 15 minutes, and dehydrated for 3 minutes; softening: water is added to the vat, 4g / L softener is added, softened and then dehydrated, maintaining the liquid content at 75%; drying: drying at 80°C for 20 minutes, cold air is applied, and the fabric is taken out of the vat to obtain a tie-dye fabric with a water ripple pattern.

[0111] Example 10

[0112] A method for tie-dyeing a water ripple pattern comprises the following steps:

[0113] S1: Tie-dye pretreatment: Add 0.5g / L hydrosulfite and 9g / L sodium carbonate to a certain amount of water, stir thoroughly to dissolve to obtain a pretreatment solution; rinse the fabric to be dyed with the pretreatment solution at a bath ratio of 1:8, at a temperature of 55°C, soak for 10 minutes, and then dehydrate, with a liquid pick-up rate of 85%;

[0114] S2: Tying: Wrap the fabric from one end around a polyester plastic tube with a length of 75 cm and an outer diameter of 6 cm. After winding, push the fabric from one end of the polyester plastic tube to the other end of the tube and secure it with cotton thread.

[0115] S3: Tie-dyeing: The fabric to be dyed obtained in S2 is completely immersed in the dye solution prepared in Preparation Example 5, with a bath ratio of 1:20, and the temperature is raised to 100°C at a rate of 5°C / min, and the dyeing is carried out for 30 minutes, and the color is matched and the water is drained;

[0116] S4: Tie-dyeing post-treatment: the fabric obtained in S3 is untied and immersed in 1.5g / L RC-425 with a bath ratio of 1:10, heated to 95°C, soaped and dehydrated; the whitening solution contains 0.8g / L soda ash and 1.5g / L hydrogen peroxide with a bath ratio of 1:14, immersed at 50°C for 2 minutes, and then dehydrated; acid washing: water is added to the vat, 3g / L acetic acid is added, the bath ratio is 1:10, maintained at 60°C, washed for 15 minutes, and dehydrated for 3 minutes; softening: water is added to the vat, 4g / L softener is added, softened and then dehydrated, maintaining the liquid content at 75%; drying: drying at 80°C for 20 minutes, cold air is applied, and the fabric is taken out of the vat to obtain a tie-dye fabric with a water ripple pattern.

[0117] Example 11

[0118] A method for tie-dyeing a water ripple pattern comprises the following steps:

[0119] S1: Tie-dye pretreatment: Add 0.5g / L hydrosulfite and 9g / L sodium carbonate to a certain amount of water, stir thoroughly to dissolve to obtain a pretreatment solution; rinse the fabric to be dyed with the pretreatment solution at a bath ratio of 1:8, at a temperature of 55°C, soak for 10 minutes, and then dehydrate, with a liquid pick-up rate of 85%;

[0120] S2: Tying: Wrap the fabric from one end around a polyester plastic tube with a length of 75 cm and an outer diameter of 6 cm. After winding, push the fabric from one end of the polyester plastic tube to the other end of the tube and secure it with cotton thread.

[0121] S3: Tie-dyeing: The fabric to be dyed obtained in S2 is completely immersed in the dye solution prepared in Preparation Example 6, with a bath ratio of 1:20, and the temperature is raised to 100°C at a rate of 5°C / min, and the dyeing is carried out for 30 minutes, the color is matched, and the water is drained;

[0122] S4: Tie-dyeing post-treatment: the fabric obtained in S3 is untied and immersed in 1.5g / L RC-425 with a bath ratio of 1:10, heated to 95°C, soaped and dehydrated; the whitening solution contains 0.8g / L soda ash and 1.5g / L hydrogen peroxide with a bath ratio of 1:14, immersed at 50°C for 2 minutes, and then dehydrated; acid washing: water is added to the vat, 3g / L acetic acid is added, the bath ratio is 1:10, maintained at 60°C, washed for 15 minutes, and dehydrated for 3 minutes; softening: water is added to the vat, 4g / L softener is added, softened and then dehydrated, maintaining the liquid content at 75%; drying: drying at 80°C for 20 minutes, cold air is applied, and the fabric is taken out of the vat to obtain a tie-dye fabric with a water ripple pattern.

[0123] Comparative Example 1

[0124] A method for tie-dyeing a water ripple pattern comprises the following steps:

[0125] S1: Tie-dye pretreatment: Add 0.5g / L hydrosulfite and 9g / L sodium carbonate to a certain amount of water, stir thoroughly to dissolve to obtain a pretreatment solution; rinse the fabric to be dyed with the pretreatment solution at a bath ratio of 1:8, at a temperature of 55°C, soak for 10 minutes, and then dehydrate, with a liquid pick-up rate of 85%;

[0126] S2: Tying: Wrap the fabric from one end around a polyester plastic tube with a length of 75 cm and an outer diameter of 6 cm. After winding, push the fabric from one end of the polyester plastic tube to the other end of the tube and secure it with cotton thread.

[0127] S3: Tie-dyeing: The fabric to be dyed obtained in S2 is completely immersed in the dye solution prepared in Preparation Example 1, with a bath ratio of 1:20, and the temperature is raised to 100°C at a rate of 5°C / min, and the dyeing is carried out for 30 minutes, and the color is matched and the water is drained;

[0128] S4: Tie-dyeing post-treatment: untie the fabric obtained in S3 and soak it in 1.5g / L RC-425 with a bath ratio of 1:10, heat it to 95℃, soap it and dehydrate it; pickling: add water into the vat, add 3g / L acetic acid, with a bath ratio of 1:10, maintain it at 60℃, wash it for 15min, and dehydrate it for 3min; softening: add water into the vat, add 4g / L softener, soften it and dehydrate it, maintaining the liquid content at 75%; drying: dry it at 80℃ for 20min, blow cold air, and remove it from the vat to obtain a tie-dyed fabric with a water ripple pattern.

[0129] Comparative Example 2

[0130] A method for tie-dyeing a water ripple pattern comprises the following steps:

[0131] S1: Tie-dye pretreatment: Add 0.5g / L hydrosulfite and 9g / L sodium carbonate to a certain amount of water, stir thoroughly to dissolve to obtain a pretreatment solution; rinse the fabric to be dyed with the pretreatment solution at a bath ratio of 1:8, at a temperature of 55°C, soak for 10 minutes, and then dehydrate, with a liquid pick-up rate of 85%;

[0132] S2: Tying: Wrap the fabric from one end around a polyester plastic tube with a length of 75 cm and an outer diameter of 6 cm. After winding, push the fabric from one end of the polyester plastic tube to the other end of the tube and secure it with cotton thread.

[0133] S3: Tie-dyeing: The fabric to be dyed obtained in S2 is completely immersed in the dye solution prepared in Preparation Example 1, with a bath ratio of 1:20, and the temperature is raised to 100°C at a rate of 5°C / min, and the dyeing is carried out for 30 minutes, and the color is matched and the water is drained;

[0134] S4: Tie-dyeing post-treatment: The fabric obtained in S3 is untied and immersed in 1.5g / L RC-425 at a bath ratio of 1:10, heated to 95°C, soaped and dehydrated; the whitening solution contains 0.8g / L soda ash and 1.5g / L hydrogen peroxide at a bath ratio of 1:14, immersed at 50°C for 2 minutes, and then dehydrated; acid washing: water is added to the vat, 3g / L acetic acid is added, the bath ratio is 1:10, maintained at 60°C, washed for 15 minutes, and dehydrated for 3 minutes; drying: drying at 80°C for 20 minutes, cold air is applied, and the fabric is taken out of the vat to obtain a tie-dyed fabric with a water ripple pattern.

[0135] Comparative Example 3

[0136] A method for tie-dyeing a water ripple pattern comprises the following steps:

[0137] S2: Tying: Wrap the fabric from one end around a polyester plastic tube with a length of 75 cm and an outer diameter of 6 cm. After winding, push the fabric from one end of the polyester plastic tube to the other end of the tube and secure it with cotton thread.

[0138] S3: Tie-dyeing: The fabric to be dyed obtained in S2 is completely immersed in the dye solution prepared in Preparation Example 1, with a bath ratio of 1:20, and the temperature is raised to 100°C at a rate of 5°C / min, and the dyeing is carried out for 30 minutes, and the color is matched and the water is drained;

[0139] Tie-dyeing post-treatment: the fabric obtained in the tie-dyeing step is untied and immersed in 1.5 g / L RC-425 at a bath ratio of 1:10, heated to 95°C, soaped, and then dehydrated; a whitening solution containing 0.8 g / L soda ash and 1.5 g / L hydrogen peroxide is used at a bath ratio of 1:14, immersed at 50°C for 2 minutes, and then dehydrated; acid washing: water is added to the vat, 3 g / L acetic acid is added, the bath ratio is 1:10, maintained at 60°C, washed for 15 minutes, and dehydrated for 3 minutes; softening: water is added to the vat, 4 g / L softener is added, softened, and then dehydrated, maintaining a liquid content of 75%; drying: drying at 80°C for 20 minutes, cold air is applied, and the fabric is removed from the vat to obtain a tie-dyed fabric with a water ripple pattern.

[0140] Comparative Example 4

[0141] A method for tie-dyeing a water ripple pattern comprises the following steps:

[0142] S1: Tie-dye pretreatment: Add 0.5g / L hydrosulfite and 9g / L sodium carbonate to a certain amount of water, stir thoroughly to dissolve to obtain a pretreatment solution; rinse the fabric to be dyed with the pretreatment solution at a bath ratio of 1:8, at a temperature of 55°C, soak for 10 minutes, and then dehydrate, with a liquid pick-up rate of 85%;

[0143] S2: Tying: After winding the fabric at a constant speed, push it to the other end of the tube and use cotton thread to wrap the fabric to fix it;

[0144] S3: Tie-dyeing: The fabric to be dyed obtained in S2 is completely immersed in the dye solution prepared in Preparation Example 1, with a bath ratio of 1:20, and the temperature is raised to 100°C at a rate of 5°C / min, and the dyeing is carried out for 30 minutes, and the color is matched and the water is drained;

[0145] S4: Tie-dyeing post-treatment: the fabric obtained in S3 is untied and immersed in 1.5g / L RC-425 with a bath ratio of 1:10, heated to 95°C, soaped and dehydrated; the whitening solution contains 0.8g / L soda ash and 1.5g / L hydrogen peroxide with a bath ratio of 1:14, immersed at 50°C for 2 minutes, and then dehydrated; acid washing: water is added to the vat, 3g / L acetic acid is added, the bath ratio is 1:10, maintained at 60°C, washed for 15 minutes, and dehydrated for 3 minutes; softening: water is added to the vat, 4g / L softener is added, softened and then dehydrated, maintaining the liquid content at 75%; drying: drying at 80°C for 20 minutes, cold air is applied, and the fabric is taken out of the vat to obtain a tie-dye fabric with a water ripple pattern.

[0146] Performance testing

[0147] The properties of the tie-dyed fabrics prepared in Examples 1-11 and Comparative Examples 1-4 were tested using the following method:

[0148] a. Washing fastness test: GB / T 3921-2008 Textiles - Tests for colour fastness - Colour fastness to washing with soap and soap;

[0149] b. Warp breaking strength test: refer to GB / T 3923.1-2013 standard test;

[0150] c. Water ripple pattern stability: Invite experienced technicians to compare the designed water ripple pattern draft with the width of the water ripple pattern, the degree of three-dimensionality of the color blending, and the whiteness to determine whether the pattern stability is qualified. Products with a score of 80 or above are qualified.

[0151] The properties of the water ripple pattern tie-dyed fabrics prepared in Examples 1-11 and Comparative Examples 1-4 are shown in Table 3:

[0152] Table 1: Product test evaluation criteria

[0153] Table 2: Comparison of rating values

[0154] Table 2 The properties of water ripple pattern tie-dyed fabric are shown in Table 1:

[0155] The water ripple pattern tie-dyed fabric obtained in the embodiment of the present application is judged to be qualified in pattern stability by comparison with the designed water ripple pattern draft, thereby achieving consistency and stability of printing quality, making the water ripple texture tie-dyed fabric have high product reproducibility and can achieve market development.

[0156] Referring to Examples 2-4 and Comparative Example 3 of the present application, it can be seen that the color fastness, breaking strength retention rate, and pattern stability of the water ripple pattern tie-dyed fabrics produced in Examples 2-4 are all higher than those in Comparative Example 3. Analysis shows that the pre-treatment of tie-dyed fabrics can significantly improve the penetration and wetting of the fabric to be dyed, enhance the surface adsorbability of the fabric to be dyed, and improve dyeing uniformity and color concentration. Examples 3-4 have higher color fastness, breaking strength retention rate, and higher pattern stability than Comparative Example 3. Analysis may be due to the addition of thiourea dioxide as a reducing agent, which has a high reduction potential and higher thermal stability of the system. Under the action of thiourea dioxide, the fabric is more likely to generate colorless or light-colored small molecule amino compounds, resulting in higher bleaching efficiency, good pre-treatment effect, and better fabric dyeing conditions.

[0157] Combining Examples 2 and 5 of the present application, it can be seen that the color fastness, breaking strength retention rate and pattern stability of the water wavy pattern tie-dyed fabric prepared in Example 5 are all higher than those in Example 2. Analysis shows that the amount of pickling agent used in the system is too high, causing the acidic solution to enter the interior of the fabric, react with the fabric fibers, damage the tie-dyed fabric, and affect the mechanical properties and presentation effect of the tie-dyed fabric.

[0158] Combining Examples 2 and 6 with Comparative Example 1, it can be seen that whitening treatment of tie-dyed fabrics after soaping improves the color fastness and three-dimensional clarity of the water ripples. This results in a higher whiteness in the undyed folds, a more pronounced three-dimensional gradient, and a more aesthetically pleasing texture. The water ripple pattern tie-dyed fabric produced in Example 2 exhibits higher color fastness, breaking strength retention, and pattern stability than in Example 6. Analysis suggests that an excessively high bath ratio enhances the uniformity of the whitening treatment, which, to a certain extent, reduces the vividness of the tie-dyed colors.

[0159] Combining Example 2 with Examples 7-11, it can be seen that the color fastness, breaking strength retention rate and pattern stability of the water ripple pattern tie-dyed fabrics prepared in Examples 8-10 are all higher than those in Example 2. Analysis shows that the compounding of resist salt and fatty alcohol polyoxyethylene ether in a certain proportion can enhance the permeability and surface activity of the fabric, and the interaction between fatty alcohol polyoxyethylene ether and the active functional groups of the tie-dyed fabric improves the breaking strength of the tie-dyed fabric, making the tie-dyed fabric present a bright color, natural color halo, and rich layered aesthetic effect.

[0160] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A method for tie-dyeing a water ripple pattern, comprising the following steps: S1: Tie-dyeing pre-treatment: soaking and dehydrating the fabric to be dyed; S2: Tying: Lay the fabric to be dyed obtained in S1 flat, wind the fabric on a tying tube from one end, push the fabric from one end of the tying tube to the other end, and fix the fabric with a fixing line; S3: tie-dyeing: immerse the fabric to be dyed obtained in S2 into the dye solution, dye, and drain; S4: Tie-dyeing post-treatment: untie the fabric obtained in S3, wash it with soap, soften it, and dry it.

2. A method for tie-dyeing a water ripple pattern according to claim 1, wherein: The length of the flower-tying tube is 70-75cm and the outer diameter is 6-10cm.

3. A water ripple pattern tie-dyeing method according to claim 1, wherein: The step S1 specifically comprises: rinsing the fabric with the pre-treatment liquid at a bath ratio of 1:2-8 and a temperature of 40-55° C., dehydrating after soaking, and achieving a liquid carrying rate of 80-85%.

4. A water ripple pattern tie-dyeing method according to claim 3, wherein: Taking water as the system, the pretreatment liquid includes the following components: 0-4g / L of thiourea dioxide, 0.5-1g / L of sodium hydrosulfite, and 5-9g / L of sodium carbonate.

5. A water ripple pattern tie-dyeing method according to claim 1, wherein: Taking water as the system, the dye solution in S3 includes the following components: 1-3 g / L of resist salt, 0-3 g / L of fatty alcohol polyoxyethylene ether, 2-8 wt% of plant indigo dye and 1-3 g / L of caustic soda, wherein the mass ratio of the resist salt to the fatty alcohol polyoxyethylene ether is 1:0-3.

6. A water ripple pattern tie-dyeing method according to claim 5, wherein: The dye solution is prepared by the following method: heating water to 50-65° C. in proportion, then adding fatty alcohol polyoxyethylene ether and resist salt, and stirring for 3-5 minutes; heating to 70-90° C., adding plant indigo dye, and stirring for 10-16 minutes; finally, adding caustic soda flakes, stirring for 20-35 minutes, to obtain the dye solution, and keeping the solution warm for later use.

7. A water ripple pattern tie-dyeing method according to claim 1, wherein: Soap washing in S4: the fabric is untied and immersed in 0.8-1.5 g / L soaping agent, maintained at 80-95°C.

8. The method for tie-dyeing a water ripple pattern according to claim 1, wherein: The acid washing in S4 is as follows: adding 1-3 g / L acetic acid to water, washing at 50-60° C. for 10-15 minutes, and then dehydrating.

9. A water ripple pattern tie-dyeing method according to claim 1, wherein: In S4, the acid-washed fabric is softened by adding 2-4 g / L of softener to water, and then dehydrating the fabric to a liquid content of 70-75%.

10. A water ripple pattern tie-dyeing method according to claim 1, wherein: The whitening treatment in S4 is as follows: adding 0.5-0.8 g / L of soda ash and 1-1.5 g / L of hydrogen peroxide to water at a bath ratio of 1:12-14, followed by dehydration.

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