Manufacturing method for wool garment dyeing and pattern design
By combining anionic direct dyes and cationic heat migration auxiliaries, the issues of precision and stability in wool garment dyeing and pattern design have been resolved, achieving efficient and energy-saving color effects and fiber protection, which is suitable for personalized market demands.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-06
- Publication Date
- 2026-04-14
AI Technical Summary
Existing methods for dyeing and pattern designing wool garments suffer from problems such as insufficient precision in spray dyeing, uneven patterns, weak dye binding, low production efficiency, and fiber damage, making it impossible to achieve personalized color effects and stable production.
By combining anionic direct dyes and cationic heat migration auxiliaries, and through low-liquor-ratio blending, pattern-making and dyeing using molds, and room-temperature immersion processes, combined with high-temperature color fixing and soaping treatments, we achieve precise control over pattern design and strong colorfastness.
It improves dye binding strength, reduces production resource consumption, enables stable production of various patterns, enhances wet rubbing fastness and fiber strength, maintains the comfort and hardness of wool, and is suitable for personalized needs.
Smart Images
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Abstract
Description
Technical Field
[0001] This application relates to the field of garment manufacturing, and in particular to a method for dyeing and pattern designing wool garments. Background Technology
[0002] With the rise of outdoor sports both domestically and internationally, the market demand for ultra-thin wool sportswear is increasing daily. As a high-end apparel product, it boasts several significant advantages. Firstly, its warmth retention: wool is an excellent natural insulating material, effectively keeping the body warm. The air within the wool fibers is trapped between the fibers, forming a natural insulating layer that provides superior warmth. Secondly, its comfort and wearing experience: wool fabric is soft, skin-friendly, and breathable, causing no skin irritation. Finally, its economic and practical value: wool undergoes meticulous processing, making it durable and possessing temperature-regulating properties, suitable not only for winter but also for spring and autumn. Therefore, wool garments have received widespread praise from consumers and are increasingly favored by the public. However, people's demands for clothing go beyond just functionality such as comfort, warmth, moisture absorption and quick-drying, and antibacterial and odor-resistant properties. They also require clothing to possess personalized characteristics such as style and patterns, showcasing individual taste. Therefore, the market demand for personalized wool garments is also growing stronger.
[0003] Currently, the most common methods for dyeing and designing wool garments are spray dyeing, tie-dyeing, laser engraving, and embossing. However, spray dyeing lacks precision, resulting in uneven edges on the patterns. Furthermore, the dye layer formed by spraying has weak adhesion to the fibers, leading to noticeable shedding after multiple washes. Manual spraying is difficult to control, often requiring excessive spraying (approximately 30-50% overspray) to ensure coverage, resulting in significant waste of pretreatment solution and increased heat loss during subsequent drying by over 30%. Tie-dyeing requires 6-8 steps, including folding, binding, and sewing, and a skilled worker needs 2-3 hours to process one garment, making its production efficiency only 1 / 20th that of mechanical printing. Laser engraving damages fibers, reducing the breaking strength of the wool, and the engraved patterns are limited to grayscale variations, failing to achieve color effects. Embossing damages the wool fiber cuticle, increasing the finished product's stiffness by 2-3 levels and significantly reducing its comfort against the skin. Summary of the Invention
[0004] To address the aforementioned technical problems, this application provides a method for dyeing and designing patterns in wool garments.
[0005] In a first aspect, this application provides a method for dyeing and designing patterns in wool garments, comprising the following steps: S1. Dyeing: Disperse anionic direct dyes and reactive resin auxiliaries in water to obtain dye liquor. Mix the wool garment to be dyed with the dye liquor and then squeeze out the excess dye liquor to obtain the wool garment to be dyed. S2. Topdressing: Dip the topdressing mold into the cationic heat migration auxiliary agent dispersion, and then, according to the design requirements of the pattern, use the topdressing mold to apply the cationic heat migration auxiliary agent dispersion to the corresponding parts of the wool garment to be topdressed, so as to obtain the initial shape of the wool garment. S3. Air dry; S4. Post-treatment: color fixing, soaping, to obtain the finished garment.
[0006] Preferably, the concentration of anionic direct dye in the dyeing solution of S1 is 10-12 g / L, and the concentration of reactive resin auxiliaries is 25-30 g / L.
[0007] Preferably, in step S1, the wool to be dyed is mixed with the dye liquor at a liquor ratio of 1.0:(1.8-2.0).
[0008] Preferably, in step S1, excess dye solution is squeezed out at a liquid retention rate of 150-160%.
[0009] Preferably, in step S2, the pattern-making mold is used to pick up the cationic thermal migration aid dispersion at a liquid retention rate of 60-70%.
[0010] Preferably, in step S2, the concentration of the cationic thermal migration aid dispersion is 40-50 wt%.
[0011] Preferably, in step S4, the color-fixing temperature is 90-98℃ and the time is 30-40 minutes.
[0012] Preferably, in step S4, the specific operation of soap washing is as follows: After color fixing, place the wool garment in an EDTA solution and treat it at 35-40℃ for 10-12 minutes. Then add 4-5% owf of octadecyltrimethylammonium chloride and treat it at 50-55℃ for 12-15 minutes. Remove the wool garment and wash it with water.
[0013] Preferably, in step S4, the dye-fixed wool garment is placed in an EDTA solution of 1.8-2.0 g / L at a liquor ratio of 1:(15-18).
[0014] By adopting the above technical solution, the dyeing process of this application uses a low liquor ratio of 1.0:(1.8-2.0), employing a room temperature soaking process to first dye the wool garment, ensuring that the dye completely penetrates the garment. Then, excess dye is squeezed out, maintaining the liquid retention rate (the percentage of the garment's dry weight difference to its dry weight) at 150-160%. The garment is then laid flat, wrinkles smoothed, and a pattern-printing mold (a mold made of a bundled towel) is dipped into and coated with a cationic heat migration agent, controlling the liquid retention rate at 60-70% to ensure uniformity of the pattern on each garment. Finally, the pattern-printing mold is lightly touched to the surface of the garment using a pattern-printing method, according to the pattern design. The dye is applied to the designated area, and the garment is then stretched out and hung to air dry. Anionic direct dyes and cationic heat migration auxiliaries interact, causing the anionic direct dyes to migrate, especially in areas where they haven't fully colored in the wet state and encounter the cationic heat migration auxiliaries. This migration creates unique floral effects. Because water is added to the cationic heat migration auxiliaries, the areas on the garment surface where the dye has been applied have a relatively higher moisture content. When hung on a hanger, gravity causes some of the anionic direct dye to move downwards, creating a continuous, undulating landscape effect. Subsequently, the dye is fixed at 90-98°C, which helps the anionic direct dye to fully color the garment and improves colorfastness. After treatment with an EDTA solution and soaping with 4-5% owf of octadecyltrimethylammonium chloride, surface dye is thoroughly removed, significantly improving the wet rubbing fastness of the finished garment.
[0015] Compared to existing dyeing and pattern design methods, this application's method for dyeing and designing wool garments significantly reduces dye usage and energy consumption during the preparation process, greatly saving production resources. Furthermore, the adhesion between the dye and the garment is far superior to that of spray dyeing and printing, and there is no noticeable color fading even after multiple washes. The preparation process allows for a variety of controllable patterns with excellent reproducibility, enabling stable production and high efficiency. This method can also achieve a wide range of color effects, and the dyeing and printing methods are gentler, without negatively impacting the fiber's breaking strength. Finally, the dyeing and printing methods of this application hardly damage the wool fiber's cuticle layer, ensuring no significant change in the garment's stiffness and comfort, thus providing consumers with a better user experience.
[0016] In summary, this application has the following beneficial technical effects: This application provides a method for dyeing and designing wool garments that can replace spray dyeing, printing, and tie-dyeing. It features innovative technology, simplified process, strong dyeing, high wet rubbing fastness, and a natural and casual final effect. It also utilizes ultra-low liquor ratio dyeing, achieving energy saving and consumption reduction. Furthermore, the product has unique patterns and can achieve stable production, meeting the current market demand for personalization. The method of this application can also achieve a variety of color effects, and the dyeing and printing methods are gentler and have almost no negative impact on the breaking strength of the fiber. The dyeing and printing methods used in this application will hardly damage the keratin layer of the wool fibers, and the stiffness and comfort of the finished garment will not change significantly, helping consumers to have a better user experience. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the embossing mold for this application; Figure 2 This is a schematic diagram of the garment produced in this application. Detailed Implementation
[0018] Material source Unless otherwise specified, all raw materials used in this application are commercially available products, specifically: Anionic direct dyes, produced by Shanghai Jizhi Biochemical Technology Co., Ltd., carboxylic acid anthraquinones, product name CIDirect Blue 6; The reactive resin additives were purchased from Jianming Industrial (Zhuhai) Co., Ltd., and are acrylic resins, product name linexsup; The cationic thermal migration aid was purchased from Jianming Industrial (Zhuhai) Co., Ltd., and is a synthetic polyamide polymer compound with the product name linex surf-t.
[0019] The present application will be further described in detail below with reference to embodiments and comparative examples.
[0020] A method for dyeing and pattern designing wool garments includes the following steps: S1. Dyeing: Disperse anionic direct dyes and reactive resin auxiliaries in water to obtain dye liquor. Mix the wool garment to be dyed with the dye liquor and then squeeze out the excess dye liquor to obtain the wool garment to be dyed. S2. Topdressing: Dip the topdressing mold into the cationic heat migration auxiliary agent dispersion, and then, according to the design requirements of the pattern, use the topdressing mold to apply the cationic heat migration auxiliary agent dispersion to the corresponding parts of the wool garment to be topdressed, so as to obtain the initial shape of the wool garment. S3. Air dry; S4. Post-treatment: color fixing, soaping, to obtain the finished garment.
[0021] In a preferred embodiment of this application, the concentration of anionic direct dye in the dyeing solution of S1 is 10-12 g / L, and the concentration of reactive resin auxiliaries is 25-30 g / L.
[0022] In a preferred embodiment of this application, in step S1, the wool to be dyed is mixed with the dye liquor at a liquor ratio of 1.0:(1.8-2.0).
[0023] In a preferred embodiment of this application, in step S1, excess dye solution is squeezed out at a liquid retention rate of 150-160%.
[0024] In a preferred embodiment of this application, in step S2, the pattern-making mold is used to pick up the cationic thermal migration aid dispersion at a liquid carrying rate of 60-70%.
[0025] In a preferred embodiment of this application, in step S2, the concentration of the cationic thermal migration aid dispersion is 40-50 wt%.
[0026] In a preferred embodiment of this application, in step S4, the color-fixing temperature is 90-98°C and the time is 30-40 minutes.
[0027] In a preferred embodiment of this application, the soap washing operation in step S4 is as follows: After color fixing, place the wool garment in an EDTA solution and treat it at 35-40℃ for 10-12 minutes. Then add 4-5% owf of octadecyltrimethylammonium chloride and treat it at 50-55℃ for 12-15 minutes. Remove the wool garment and wash it with water.
[0028] In a preferred embodiment of this application, in step S4, the dye-fixed wool garment is placed in an EDTA solution of 1.8-2.0 g / L at a liquor ratio of 1:(15-18).
[0029] Example 1.1 A method for dyeing and pattern designing wool garments includes the following steps: S1. Dyeing: Disperse anionic direct dye and reactive resin auxiliaries in water to obtain a dye liquor. The concentration of anionic direct dye in the dye liquor is 10 g / L and the concentration of reactive resin auxiliaries is 30 g / L. Place 1 kg of wool garments to be dyed in a dyeing container, weigh 2 L of dye liquor according to a liquor ratio of 1.0:2.0, and then slowly pour the dye liquor into the dyeing container. Turn and knead the wool garments to be dyed so that each garment can fully absorb the dye liquor. This process lasts for 5 minutes. Squeeze off the excess dye liquor according to a 150% liquor retention rate to obtain the wool garments to be dyed. S2. Topdressing: The cationic thermal migration aid is dispersed in water to obtain a cationic thermal migration aid dispersion with a concentration of 40 wt%, and then... Figure 1 The pattern-printing mold is used to apply the cationic heat migration auxiliary agent dispersion, with the liquid application rate controlled at 70%. The wool garment to be dyed in S1 is laid flat. According to the pattern design requirements, the cationic heat migration auxiliary agent dispersion is applied to the corresponding parts of the wool garment to be dyed using the pattern-printing mold. Pay attention to the pressure of the hand movements and keep the force even to obtain the initial wool garment. S3. Air drying: Hang the pre-shaped wool garment obtained in S2 on a hanger and air dry naturally in a normal indoor environment until the anionic direct dye is fully colored to fix the pattern. S4. Post-treatment: The wool garments that have been air-dried in S3 are dried in a tumble dryer at 98℃ for 30 minutes for color fixation. Then, they are placed in a 2 g / L EDTA solution at a liquor ratio of 1:15 and treated at 40℃ for 10 minutes. Next, 5% owf of octadecyltrimethylammonium chloride is added, and the mixture is treated at 50℃ for 15 minutes. The wool garments are then removed, washed in water at 40℃ for 10 minutes, and air-dried to obtain the desired result. Figure 2 The product shown is a ready-made garment.
[0030] Example 1.2 A method for dyeing and pattern designing wool garments includes the following steps: S1. Dyeing: Disperse anionic direct dye and reactive resin auxiliaries in water to obtain a dye liquor. The concentration of anionic direct dye in the dye liquor is 12 g / L, and the concentration of reactive resin auxiliaries is 25 g / L. Place 1 kg of wool garments to be dyed in a dyeing container, weigh 1.8 L of dye liquor according to a liquor ratio of 1.0:1.8, and then slowly pour the dye liquor into the dyeing container. Turn and knead the wool garments to be dyed so that each garment can fully absorb the dye liquor. This process lasts for 5 minutes. Squeeze off the excess dye liquor according to a 160% liquor retention rate to obtain the wool garments to be dyed. S2. Topdressing: The cationic thermal migration aid is dispersed in water to obtain a 50wt% cationic thermal migration aid dispersion, followed by... Figure 1 The pattern-printing mold is used to apply the cationic heat migration auxiliary agent dispersion, with the liquid application rate controlled at 60%. The wool garment to be dyed in S1 is laid flat. According to the pattern design requirements, the cationic heat migration auxiliary agent dispersion is applied to the corresponding parts of the wool garment to be dyed using the pattern-printing mold. Pay attention to the pressure of the hand movements and keep the force even to obtain the initial wool garment. S3. Air drying: Hang the pre-shaped wool garment obtained in S2 on a hanger and air dry naturally in a normal indoor environment until the anionic direct dye is fully colored to fix the pattern. S4. Post-treatment: The wool garments that have been air-dried in S3 are dried in a rotary dryer at 98℃ for 30 minutes for color fixation. Then, they are placed in a 2 g / L EDTA solution at a liquor ratio of 1:15 and treated at 35℃ for 12 minutes. Next, 4% owf of octadecyltrimethylammonium chloride is added, and the treatment is carried out at 55℃ for 12 minutes. The wool garments are then removed, washed in water at 40℃ for 10 minutes, and air-dried to obtain the desired result. Figure 2 The product shown is a ready-made garment.
[0031] Example 2.1 A method for dyeing and designing patterns for wool garments differs from Example 1.1 in that, in S1, 1.5L of dye liquor is weighed according to a liquor ratio of 1.0:1.5, while the rest is the same as in Example 1.1.
[0032] Example 2.2 A method for dyeing and designing patterns for wool garments differs from Example 1.1 in that, in S1, 2.5L of dye liquor is weighed according to a liquor ratio of 1.0:2.5, while the rest is the same as in Example 1.1.
[0033] Example 3
[0034] A method for dyeing and pattern designing wool garments differs from Example 1.1 in that the specific operation in S4 is as follows: the wool garment that has been air-dried in S3 is dried in a rotary dryer at 98°C for 30 minutes for color fixation. Then, it is placed in a conventional soaping solution (containing 2 g / L EDTA and 20 g / L sodium dodecylbenzenesulfonate, with pH adjusted using sodium carbonate) at a liquor ratio of 1:20 and treated at 50°C for 25 minutes. The wool garment is then removed, washed in water at 40°C for 10 minutes, and air-dried to obtain the desired result. Figure 2 The product shown is a ready-made garment.
[0035] Performance testing According to the standard of textile fabrics tensile properties - Part 1: Determination of breaking strength and elongation at break (GB / T3923.1-2013), the breaking strength (N) of the untreated wool garment to be dyed was tested. Then, the breaking strength (N) of the garments obtained from each example was tested, and the breaking strength reduction rate (%) was calculated. Then, the wool garment to be dyed was treated according to the existing spray dyeing process, and the breaking strength (N) of the garment (denoted as SD garment) was measured again, and the breaking strength reduction rate (%) was calculated. 2. According to the "AATCC Hand Feel Rating Guide (AATCC EP5-2021)", the hand feel of the finished garments obtained from each example was tested. Then, the wool garments to be dyed were treated according to the existing embossing and setting process. The hand feel of the finished garments (denoted as ES garments) was also measured. The garments were blind-rated by more than 5 experienced personnel and scored on a scale of 1 to 5 (1 = extremely soft, 5 = extremely stiff). 3. The wet rubbing fastness grades of the garments obtained from each embodiment were tested according to Textiles - Tests for color fastness - Part X12: Color fastness to rubbing (ISO 105-X12:2016), with grades 5: no color transfer; 4: slight color transfer; 3: moderate color transfer; 2: noticeable color transfer; and 1: severe color transfer.
[0036] Table 1 Data Records
[0037] Data Analysis: From Table 1 and Figure 2 As can be seen, the production method of wool garment dyeing and pattern design in this application can replace spray dyeing and printing and tie-dyeing. It features technological innovation, simplified process, strong dyeing, high wet rubbing fastness, and a natural and casual final effect. It also utilizes ultra-low liquor ratio dyeing, which achieves energy saving and consumption reduction. Moreover, the product has special patterns and can achieve stable production, which is suitable for the current market's personalized needs. It can achieve a variety of color effects, and the dyeing and printing methods are gentler, with almost no negative impact on the fiber breaking strength and almost no damage to the wool fiber cuticle. The stiffness and comfort of the finished garment will not be significantly changed, helping consumers to have a better user experience.
[0038] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A method for dyeing and designing patterns in wool garments, characterized in that, Includes the following steps: S1. Dyeing: Disperse anionic direct dyes and reactive resin auxiliaries in water to obtain dye liquor. Mix the wool garment to be dyed with the dye liquor and then squeeze out the excess dye liquor to obtain the wool garment to be dyed. S2. Topdressing: Dip the topdressing mold into the cationic heat migration auxiliary agent dispersion, and then, according to the design requirements of the pattern, use the topdressing mold to apply the cationic heat migration auxiliary agent dispersion to the corresponding parts of the wool garment to be topdressed, so as to obtain the initial shape of the wool garment. S3. Air dry; S4. Post-treatment: color fixing, soaping, to obtain the finished garment.
2. The method for dyeing and pattern designing wool garments according to claim 1, characterized in that, The concentration of anionic direct dye in the dyeing solution of S1 is 10-12 g / L, and the concentration of reactive resin auxiliaries is 25-30 g / L.
3. The method for dyeing and pattern designing wool garments according to claim 1, characterized in that, In step S1, the wool to be dyed is mixed with the dye liquor at a liquor ratio of 1.0:(1.8-2.0).
4. The method for dyeing and pattern designing wool garments according to claim 1, characterized in that, In step S1, excess dye solution is squeezed out at a liquid retention rate of 150-160%.
5. The method for dyeing and pattern designing wool garments according to claim 1, characterized in that, In step S2, the pattern-making mold is used to pick up the cationic thermal migration aid dispersion at a liquid retention rate of 60-70%.
6. The method for dyeing and pattern designing wool garments according to claim 1, characterized in that, In S2, the concentration of the cationic thermal migration aid dispersion is 40-50 wt%.
7. The method for dyeing and pattern designing wool garments according to claim 1, characterized in that, In step S4, the color-fixing temperature is 90-98℃ and the time is 30-40 minutes.
8. The method for dyeing and pattern designing wool garments according to claim 1, characterized in that, In step S4, the specific operation of soap washing is as follows: After color fixing, place the wool garment in an EDTA solution and treat it at 35-40℃ for 10-12 minutes. Then add 4-5% owf of octadecyltrimethylammonium chloride and treat it at 50-55℃ for 12-15 minutes. Remove the wool garment and wash it with water.
9. A method for dyeing and designing patterns in wool garments according to claim 8, characterized in that, In step S4, the dye-fixed wool garment is placed in an EDTA solution of 1.8-2.0 g / L at a liquor ratio of 1:(15-18).