Manufacturing process of plant environment-friendly dyeing material

Abstract

The invention provides a manufacturing process of a plant environment-friendly dyeing material, and relates to the technical field of clothing dyes. The manufacturing process of the plant environment-friendly dyeing material comprises the following steps: selecting plant raw materials, namely selecting natural plant resources including but not limited to plant roots, stems, leaves, flowers or fruits as dye raw materials; according to the extraction process, plant raw materials are cleaned, impurities are removed, the cleaned plant raw materials are cut or smashed so as to increase the plant surface area and promote dye extraction, water extraction, alcohol extraction or enzyme extraction can be adopted, natural dye components in plants are extracted, an extracting solution is filtered and concentrated, and the needed plant dye concentrated solution is obtained. Plant raw materials are adopted as dye sources, harmful chemical dyes are not used, the environmental protection requirement is met, blending of multiple colors can be achieved through the optimized dyeing technology, the dyeing fastness is high, and the requirement of the market for the dyeing quality can be met.

Description

Technical Field

[0001] The invention relates to the technical field of clothing dyes, in particular to a production process of a plant-based environmentally friendly dyeing material. Background Art

[0002] With the rapid development of the textile industry, dyeing technology has become one of the key links in the textile production process. The dyeing process not only determines the color effect of the fabric, but also directly affects the quality, comfort and service life of the fabric. During the dyeing process, how to ensure that the dye is firmly attached to the fiber to prevent fading, pollution or uneven dyeing.

[0003] At present, the technical development of post-dyeing treatment is facing increasingly higher environmental protection requirements and production challenges. How to reduce energy consumption, reduce the use of water resources, and avoid the discharge of harmful chemicals while ensuring dyeing quality has become an important issue that the industry needs to solve urgently. In addition, as consumers' requirements for textile quality continue to increase, dyed fabrics not only need to meet basic requirements such as color fastness, softness and comfort, but also need to have higher wrinkle resistance, antibacterial and UV resistance and other additional functions.

[0004] The dye industry traditionally uses synthetic dyes, most of which are based on petrochemical raw materials, and many synthetic dyes are potentially harmful to the environment and human health. With the improvement of environmental awareness and the demand for green and sustainable development, plant dyes have attracted more and more attention due to their natural sources, non-toxic and harmless, and biodegradable characteristics. However, the production process of existing plant dyes still has problems such as low efficiency, single color, and poor color fastness. Therefore, those skilled in the art provide a production process for plant environmentally friendly dyeing materials to solve the problems raised in the above background technology. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a process for producing a plant-based environmentally friendly dyeing material, which solves the problems of low efficiency, single color and poor color fastness in the existing production process of plant dyes.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: A process for producing a plant-based environmentally friendly dyeing material, comprising:

[0009] Plant raw material selection: select natural plant resources, including but not limited to plant roots, stems, leaves, flowers or fruits as dye raw materials;

[0010] Extraction process: washing the plant raw materials, removing impurities, cutting or crushing the washed plant raw materials to increase the plant surface area and promote the extraction of dyes. Water extraction, alcohol extraction or enzyme extraction can be used to extract the natural dye components in the plants. The extract is filtered and concentrated to obtain the desired plant dye concentrate;

[0011] Dyeing process: prepare the fabric to be dyed, put the fabric into the dyeing tank, add an appropriate amount of plant dye concentrate, adjust the pH value of the dyeing solution, control the dyeing temperature, keep it for a certain time, and add natural dyeing auxiliaries as needed to improve the dyeing fastness and color brightness;

[0012] After dyeing, take out the dyed fabric, rinse it with cold water to remove the unfixed dye, use natural fixing agent or plant extract to further fix the dye to ensure the fastness of the dye and avoid fading, and dry the dyed fabric;

[0013] The final product, after the above treatment, is a plant-based environmentally friendly dyed fabric or other dyed product with bright color and high color fastness. The dyed material is environmentally friendly, meets the requirements of green and sustainable development, and does not contain harmful chemicals.

[0014] Preferably, the plant raw material selection comprises the following steps:

[0015] S1. Determine the target color and select the appropriate plant raw materials to achieve the desired dyeing effect. For red, madder root, beetroot and azalea can be selected; for yellow, marigold, phellodendron, chrysanthemum and onion skin can be selected; for blue, indigo, blue indigo grass and artemisia annua can be selected; for green, spinach leaves and miscanthus can be selected;

[0016] S2. Understand the dyeing properties of plants and evaluate them through the stability, dyeing depth and operability of pigments;

[0017] S3. Consider the availability and seasonality of plants, avoid over-harvested plants, and ensure that the plants used are sustainably sourced. The pigment concentration of plants varies with the seasons, and some plants may have the best dyeing effect in certain seasons;

[0018] S4. Choose plant parts suitable for dyeing. Different parts of different plants contain different types and concentrations of dye components. You can choose roots, leaves, flowers, fruits or seeds;

[0019] S5. Check the safety and harmlessness of plants. When selecting plant raw materials, you must confirm their safety to the human body and the environment, and ensure that the plants will not cause adverse effects on human skin or the environment;

[0020] S6. Study the difficulty of plant extraction. The difficulty of extracting dyes from different plants varies;

[0021] S7. Consider the environmental impact of plants, try to choose locally grown plants, avoid the ecological harm caused by foreign plants, and give priority to organic or fertilizer-free and pesticide-free plants to avoid environmental pollution by harmful chemicals.

[0022] Preferably, the extraction process comprises the following steps:

[0023] S1. Select plant raw materials. First, select suitable plant raw materials. According to the aforementioned selection criteria, select the required plants;

[0024] S2. Prepare the plant materials, wash the plant materials, remove dust, impurities or pesticide residues on the surface, and cut the plants appropriately according to the plant species, usually into small pieces or fragments, which helps to better release the pigment;

[0025] S3. Soaking and boiling, extracting by boiling hot water, putting the plant material into a pot, adding enough water, and boiling extraction, the boiling time is 30 to 60 minutes, until the water changes color and the pigment is fully released;

[0026] S4. Filter the extract. After boiling, most of the pigments in the plant raw materials have dissolved in the water. Use a filter mesh and gauze to filter it multiple times to remove the internal plant residues and ensure that the extract is clear.

[0027] S5. Concentrate the extract, pour the extract back into the pot, and slowly evaporate the water over low heat until the liquid is concentrated to the desired concentration. During the concentration process, the extract needs to be stirred continuously to prevent sedimentation or burning;

[0028] S6. Test the dyeing effect. After the extract is ready, do a small sample test to check its color and dyeing effect. Take a small piece of cloth or fiber, soak or dye it to see if the ideal color is obtained. If the color is too light, you can heat it appropriately or extend the dyeing time. If the color is too dark, you can release the extract;

[0029] S7. Adjust the pH value of the dye to change the dyeing effect. For alkaline adjustment, vinegar or lemon juice can be added. For alkaline adjustment, baking soda can be added.

[0030] S8. dyeing, immersing the adjusted dye into the fabric or fiber for dyeing, and the immersion time is maintained at 1 hour to several hours, and the specific time depends on the color depth requirements;

[0031] S9. Fixation and color fixation. After dyeing, the dye needs to be fixed by a color fixer to ensure that the color is firm and not easy to fade. Commonly used color fixers include alum, acetic acid solution and salt water;

[0032] S10. Washing and drying: After dyeing is completed, take out the fabric and rinse it with clean water to remove excess dye until the water becomes clear, then gently wring the dyed fabric and lay it flat in a ventilated place to dry naturally, avoiding exposure to the sun and high temperature;

[0033] S11. Care after dyeing: The dyed fabrics or fibers need to be cleaned and cared for carefully to avoid high temperature or strong friction that may cause pigment loss. When washing regularly, it is recommended to use a neutral detergent to avoid strong chemicals that may damage the dyeing effect.

[0034] Preferably, the dyeing process comprises the following steps:

[0035] S1. Preparation: Choose the appropriate dye according to the type of material to be dyed and the dyeing effect to be achieved. Dissolve the dye in the correct proportion according to the instructions for use of the dye. Common dissolving media include water and alcohol solutions. Ensure that the surface of the textile is free of oil and dust.

[0036] S2. Pretreatment, the pretreatment methods include bleaching, mordanting and acid-base adjustment, the purpose is to create good conditions for dyeing and improve the dyeing effect;

[0037] S3. Dyeing: Depending on the type of dye, the nature of the dyeing material and the final effect, the dyeing method may vary, including immersion dyeing, boiling dyeing, spray dyeing and immersion dyeing;

[0038] S4. Fixation: After dyeing is completed, a fixation treatment must be performed to enhance the fastness and durability of the dye;

[0039] S5. Post-treatment: rinse the dyed fabric thoroughly with clean water to remove unattached free dyes, then perform a color fixation treatment on it, and finally dehydrate the fabric, which can be done by using a dehydrator or manually wringing it out;

[0040] S6. Drying and finishing: let the dyed fabrics dry naturally and avoid direct exposure to the sun.

[0041] Preferably, the post-dyeing treatment comprises the following steps:

[0042] S1. Washing: First wash the dyed fabric with warm water, then use a neutral detergent to gently wash the fabric to remove residual dye molecules and impurities;

[0043] S2. Color fixation: Color fixation treatment helps to enhance the color fastness of fabrics and prevent fading caused by washing and friction;

[0044] S3. Setting treatment: Setting treatment helps to ensure that the shape, structure and texture of the dyed fabric meet the expected effect. Setting treatment includes heat setting, steam setting and mechanical setting.

[0045] S4. Dehydration and drying: remove moisture through proper dehydration and drying to prevent the dye from being lost or contaminating other areas due to residual moisture;

[0046] S5. Softening treatment: Use softener or softening liquid to treat the fabric to make the fiber softer and improve the feel of the fabric;

[0047] S6. Anti-wrinkle treatment, the application of anti-wrinkle agents to make the fiber structure of the fabric stronger, thereby reducing wrinkles;

[0048] S7. Finishing and final inspection: check whether the fabric has color difference, fading or uneven dyeing, check the softness and smoothness of the fabric, ensure that the dyed fabric meets the use requirements, and perform mechanical finishing as needed.

[0049] (III) Beneficial effects

[0050] The present invention provides a process for producing a plant-based environmentally friendly dyeing material. It has the following beneficial effects:

[0051] 1. In the present invention, plant raw materials are used as dye sources, and no harmful chemical dyes are used, which meets environmental protection requirements. The optimized dyeing process can achieve the mixing of various colors, and the color fastness is high, which can meet the market demand for dyeing quality.

[0052] 2. In the present invention, by using plant raw materials, it can be obtained continuously, reducing the dependence on chemical dyes, which is in line with the direction of green development. At the same time, the preparation process of this technology is simple and can be applied to multiple fields such as textiles, clothing and food packaging, and has broad market prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 It is a schematic diagram of the overall process of the extraction process of the present invention;

[0054] Figure 2 A schematic diagram of the process for selecting plant raw materials in the present invention;

[0055] Figure 3 It is a schematic diagram of the process of extraction in the present invention;

[0056] Figure 4 It is a schematic diagram of the dyeing process of the present invention;

[0057] Figure 5 It is a schematic diagram of the process of post-dyeing treatment in the present invention. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0059] Embodiment 1:

[0060] like Figure 1-5 As shown, an embodiment of the present invention provides a process for producing a plant-based environmentally friendly dyeing material, comprising:

[0061] Plant raw material selection: select natural plant resources, including but not limited to plant roots, stems, leaves, flowers or fruits as dye raw materials;

[0062] Extraction process: washing the plant raw materials, removing impurities, cutting or crushing the washed plant raw materials to increase the plant surface area and promote the extraction of dyes. Water extraction, alcohol extraction or enzyme extraction can be used to extract the natural dye components in the plants. The extract is filtered and concentrated to obtain the desired plant dye concentrate;

[0063] Dyeing process: prepare the fabric to be dyed, put the fabric into the dyeing tank, add an appropriate amount of plant dye concentrate, adjust the pH value of the dyeing solution, control the dyeing temperature, keep it for a certain time, and add natural dyeing auxiliaries as needed to improve the dyeing fastness and color brightness;

[0064] After dyeing, take out the dyed fabric, rinse it with cold water to remove the unfixed dye, use natural fixing agent or plant extract to further fix the dye to ensure the fastness of the dye and avoid fading, and dry the dyed fabric;

[0065] The final product, after the above treatment, is a plant-based environmentally friendly dyed fabric or other dyed product with bright color and high color fastness. The dyed material is environmentally friendly, meets the requirements of green and sustainable development, and does not contain harmful chemicals.

[0066] Plant material selection includes the following steps:

[0067] S1. Determine the target color and select the appropriate plant raw materials to achieve the desired dyeing effect. For red, madder root, beetroot and azalea can be selected; for yellow, marigold, phellodendron, chrysanthemum and onion skin can be selected; for blue, indigo, blue indigo grass and artemisia annua can be selected; for green, spinach leaves and miscanthus can be selected;

[0068] S2. Understand the dyeing properties of plants and evaluate them through the stability, dyeing depth and operability of pigments;

[0069] S3. Consider the availability and seasonality of plants, avoid over-harvested plants, and ensure that the plants used are sustainably sourced. The pigment concentration of plants varies with the seasons, and some plants may have the best dyeing effect in certain seasons;

[0070] S4. Choose plant parts suitable for dyeing. Different parts of different plants contain different types and concentrations of dye components. You can choose roots, leaves, flowers, fruits or seeds;

[0071] S5. Check the safety and harmlessness of plants. When selecting plant raw materials, you must confirm their safety to the human body and the environment, and ensure that the plants will not cause adverse effects on human skin or the environment;

[0072] S6. Study the difficulty of plant extraction. The difficulty of extracting dyes from different plants varies;

[0073] S7. Consider the environmental impact of plants, try to choose locally grown plants, avoid the ecological harm caused by foreign plants, and give priority to organic or fertilizer-free and pesticide-free plants to avoid environmental pollution by harmful chemicals.

[0074] The extraction process includes the following steps:

[0075] S1. Select plant raw materials. First, select suitable plant raw materials. According to the aforementioned selection criteria, select the required plants;

[0076] S2. Prepare the plant materials, wash the plant materials, remove dust, impurities or pesticide residues on the surface, and cut the plants appropriately according to the plant species, usually into small pieces or fragments, which helps to better release the pigment;

[0077] S3. Soaking and boiling, extracting by boiling hot water, putting the plant material into a pot, adding enough water, and boiling extraction, the boiling time is 30 to 60 minutes, until the water changes color and the pigment is fully released;

[0078] S4. Filter the extract. After boiling, most of the pigments in the plant raw materials have dissolved in the water. Use a filter mesh and gauze to filter it multiple times to remove the internal plant residues and ensure that the extract is clear.

[0079] S5. Concentrate the extract, pour the extract back into the pot, and slowly evaporate the water over low heat until the liquid is concentrated to the desired concentration. During the concentration process, the extract needs to be stirred continuously to prevent sedimentation or burning;

[0080] S6. Test the dyeing effect. After the extract is ready, do a small sample test to check its color and dyeing effect. Take a small piece of cloth or fiber, soak or dye it to see if the ideal color is obtained. If the color is too light, you can heat it appropriately or extend the dyeing time. If the color is too dark, you can release the extract;

[0081] S7. Adjust the pH value of the dye to change the dyeing effect. For alkaline adjustment, vinegar or lemon juice can be added. For alkaline adjustment, baking soda can be added.

[0082] S8. dyeing, immersing the adjusted dye into the fabric or fiber for dyeing, and the immersion time is maintained at 1 hour to several hours, and the specific time depends on the color depth requirements;

[0083] S9. Fixation and color fixation. After dyeing, the dye needs to be fixed by a color fixer to ensure that the color is firm and not easy to fade. Commonly used color fixers include alum, acetic acid solution and salt water;

[0084] S10. Washing and drying: After dyeing is completed, take out the fabric and rinse it with clean water to remove excess dye until the water becomes clear, then gently wring the dyed fabric and lay it flat in a ventilated place to dry naturally, avoiding exposure to the sun and high temperature;

[0085] S11. Care after dyeing: The dyed fabrics or fibers need to be cleaned and cared for carefully to avoid high temperature or strong friction that may cause pigment loss. When washing regularly, it is recommended to use a neutral detergent to avoid strong chemicals that may damage the dyeing effect.

[0086] The dyeing process includes the following steps:

[0087] S1. Preparation: Choose the appropriate dye according to the type of material to be dyed and the dyeing effect to be achieved. Dissolve the dye in the correct proportion according to the instructions for use of the dye. Common dissolving media include water and alcohol solutions. Ensure that the surface of the textile is free of oil and dust.

[0088] S2. Pretreatment, the pretreatment methods include bleaching, mordanting and acid-base adjustment, the purpose is to create good conditions for dyeing and improve the dyeing effect;

[0089] S3. Dyeing: Depending on the type of dye, the nature of the dyeing material and the final effect, the dyeing method may vary, including immersion dyeing, boiling dyeing, spray dyeing and immersion dyeing;

[0090] S4. Fixation: After dyeing is completed, a fixation treatment must be performed to enhance the fastness and durability of the dye;

[0091] S5. Post-treatment: rinse the dyed fabric thoroughly with clean water to remove unattached free dyes, then perform a color fixation treatment on it, and finally dehydrate the fabric, which can be done by using a dehydrator or manually wringing it out;

[0092] S6. Drying and finishing: let the dyed fabrics dry naturally and avoid direct exposure to the sun.

[0093] Post-staining treatment includes the following steps:

[0094] S1. Washing: First wash the dyed fabric with warm water, then use a neutral detergent to gently wash the fabric to remove residual dye molecules and impurities;

[0095] S2. Color fixation: Color fixation treatment helps to enhance the color fastness of fabrics and prevent fading caused by washing and friction;

[0096] S3. Setting treatment: Setting treatment helps to ensure that the shape, structure and texture of the dyed fabric meet the expected effect. Setting treatment includes heat setting, steam setting and mechanical setting.

[0097] S4. Dehydration and drying: remove moisture through proper dehydration and drying to prevent the dye from being lost or contaminating other areas due to residual moisture;

[0098] S5. Softening treatment: Use softener or softening liquid to treat the fabric to make the fiber softer and improve the feel of the fabric;

[0099] S6. Anti-wrinkle treatment, the application of anti-wrinkle agents to make the fiber structure of the fabric stronger, thereby reducing wrinkles;

[0100] S7. Finishing and final inspection: check whether the fabric has color difference, fading or uneven dyeing, check the softness and smoothness of the fabric, ensure that the dyed fabric meets the use requirements, and perform mechanical finishing as needed.

[0101] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A process for producing a plant-based environmentally friendly dyeing material, characterized in that: include: Plant raw material selection: select natural plant resources, including but not limited to plant roots, stems, leaves, flowers or fruits as dye raw materials; Extraction process: washing the plant raw materials, removing impurities, cutting or crushing the washed plant raw materials to increase the plant surface area and promote the extraction of dyes. Water extraction, alcohol extraction or enzyme extraction can be used to extract the natural dye components in the plants. The extract is filtered and concentrated to obtain the desired plant dye concentrate; Dyeing process: prepare the fabric to be dyed, put the fabric into the dyeing tank, add an appropriate amount of plant dye concentrate, adjust the pH value of the dyeing solution, control the dyeing temperature, keep it for a certain time, and add natural dyeing auxiliaries as needed to improve the dyeing fastness and color brightness; After dyeing, take out the dyed fabric, rinse it with cold water to remove the unfixed dye, use natural fixing agent or plant extract to further fix the dye to ensure the fastness of the dye and avoid fading, and dry the dyed fabric; The final product, after the above treatment, is a plant-based environmentally friendly dyed fabric or other dyed product with bright color and high color fastness. The dyed material is environmentally friendly, meets the requirements of green and sustainable development, and does not contain harmful chemicals.

2. The process for producing a plant-based environmentally friendly dyeing material according to claim 1, characterized in that: The plant raw material selection comprises the following steps: S1. Determine the target color and select the appropriate plant raw materials to achieve the desired dyeing effect. For red, madder root, beetroot and azalea can be selected; for yellow, marigold, phellodendron, chrysanthemum and onion skin can be selected; for blue, indigo, blue indigo grass and artemisia annua can be selected; for green, spinach leaves and miscanthus can be selected; S2. Understand the dyeing properties of plants and evaluate them through the stability, dyeing depth and operability of pigments; S3. Consider the availability and seasonality of plants, avoid over-harvested plants, and ensure that the plants used are sustainably sourced. The pigment concentration of plants varies with the seasons, and some plants may have the best dyeing effect in certain seasons; S4. Choose plant parts suitable for dyeing. Different parts of different plants contain different types and concentrations of dye components. You can choose roots, leaves, flowers, fruits or seeds; S5. Check the safety and harmlessness of plants. When selecting plant raw materials, you must confirm their safety to the human body and the environment, and ensure that the plants will not cause adverse effects on human skin or the environment; S6. Study the difficulty of plant extraction. The difficulty of extracting dyes from different plants varies; S7. Consider the environmental impact of plants, try to choose locally grown plants, avoid the ecological harm caused by foreign plants, and give priority to organic or fertilizer-free and pesticide-free plants to avoid environmental pollution by harmful chemicals.

3. The process for producing a plant-based environmentally friendly dyeing material according to claim 1, characterized in that: The extraction process comprises the following steps: S1. Select plant raw materials. First, select suitable plant raw materials. According to the aforementioned selection criteria, select the required plants; S2. Prepare the plant materials, wash the plant materials, remove dust, impurities or pesticide residues on the surface, and cut the plants appropriately according to the plant species, usually into small pieces or fragments, which helps to better release the pigment; S3. Soaking and boiling, extracting by boiling hot water, putting the plant material into a pot, adding enough water, and boiling extraction, the boiling time is 30 to 60 minutes, until the water changes color and the pigment is fully released; S4. Filter the extract. After boiling, most of the pigments in the plant raw materials have dissolved in the water. Use a filter mesh and gauze to filter it multiple times to remove the internal plant residues and ensure that the extract is clear. S5. Concentrate the extract, pour the extract back into the pot, and slowly evaporate the water over low heat until the liquid is concentrated to the desired concentration. During the concentration process, the extract needs to be stirred continuously to prevent sedimentation or burning; S6. Test the dyeing effect. After the extract is ready, do a small sample test to check its color and dyeing effect. Take a small piece of cloth or fiber, soak or dye it to see if the ideal color is obtained. If the color is too light, you can heat it appropriately or extend the dyeing time. If the color is too dark, you can release the extract; S7. Adjust the pH value of the dye to change the dyeing effect. For alkaline adjustment, vinegar or lemon juice can be added. For alkaline adjustment, baking soda can be added. S8. dyeing, immersing the adjusted dye into the fabric or fiber for dyeing, and the immersion time is maintained at 1 hour to several hours, and the specific time depends on the color depth requirements; S9. Fixation and color fixation. After dyeing, the dye needs to be fixed by a color fixer to ensure that the color is firm and not easy to fade. Commonly used color fixers include alum, acetic acid solution and salt water; S10. Washing and drying: After dyeing is completed, take out the fabric and rinse it with clean water to remove excess dye until the water becomes clear, then gently wring the dyed fabric and lay it flat in a ventilated place to dry naturally, avoiding exposure to the sun and high temperature; S11. Care after dyeing: The dyed fabrics or fibers need to be cleaned and cared for carefully to avoid high temperature or strong friction that may cause pigment loss. When washing regularly, it is recommended to use a neutral detergent to avoid strong chemicals that may damage the dyeing effect.

4. The process for producing a plant-based environmentally friendly dyeing material according to claim 1, characterized in that: The dyeing process comprises the following steps: S1. Preparation: Choose the appropriate dye according to the type of material to be dyed and the dyeing effect to be achieved. Dissolve the dye in the correct proportion according to the instructions for use of the dye. Common dissolving media include water and alcohol solutions. Ensure that the surface of the textile is free of oil and dust. S2. Pretreatment, the pretreatment methods include bleaching, mordanting and acid-base adjustment, the purpose is to create good conditions for dyeing and improve the dyeing effect; S3. Dyeing: Depending on the type of dye, the nature of the dyeing material and the final effect, the dyeing method may vary, including immersion dyeing, boiling dyeing, spray dyeing and immersion dyeing; S4. Fixation: After dyeing is completed, a fixation treatment must be performed to enhance the fastness and durability of the dye; S5. Post-treatment: rinse the dyed fabric thoroughly with clean water to remove unattached free dyes, then perform a color fixation treatment on it, and finally dehydrate the fabric, which can be done by using a dehydrator or manually wringing it out; S6. Drying and finishing: let the dyed fabrics dry naturally and avoid direct exposure to the sun.

5. The process for producing a plant-based environmentally friendly dyeing material according to claim 1, characterized in that: The dyeing post-treatment comprises the following steps: S1. Washing: First wash the dyed fabric with warm water, then use a neutral detergent to gently wash the fabric to remove residual dye molecules and impurities; S2. Color fixation: Color fixation treatment helps to enhance the color fastness of fabrics and prevent fading caused by washing and friction; S3. Setting treatment: Setting treatment helps to ensure that the shape, structure and texture of the dyed fabric meet the expected effect. Setting treatment includes heat setting, steam setting and mechanical setting. S4. Dehydration and drying: remove moisture through proper dehydration and drying to prevent the dye from being lost or contaminating other areas due to residual moisture; S5. Softening treatment: Use softener or softening liquid to treat the fabric to make the fiber softer and improve the feel of the fabric; S6. Anti-wrinkle treatment, the application of anti-wrinkle agents to make the fiber structure of the fabric stronger, thereby reducing wrinkles; S7. Finishing and final inspection: check whether the fabric has color difference, fading or uneven dyeing, check the softness and smoothness of the fabric, ensure that the dyed fabric meets the use requirements, and perform mechanical finishing as needed.

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