Yarn and cloth low-temperature energy-saving dyeing process improved by plant fermentation liquor

Abstract

The invention belongs to the technical field of textile dyeing, and discloses a low-temperature energy-saving dyeing process, which comprises the following dyeing steps: A1, preparing a plant fermentation liquid, fermenting through probiotics, and extracting the fermentation liquid; a2, low-temperature dyeing treatment: immersing the fabric to be dyed into a low-temperature dyeing solution to realize color fixation; a3, adding an environment-friendly auxiliary agent, wherein a green printing and dyeing auxiliary agent is added in the dyeing process; and A4, post-treatment and finished product inspection: washing and drying the yarns and the cloth. In the dyeing process, the energy consumption in the dyeing process is remarkably reduced through a low-temperature process at the temperature of 60 DEG C or below, carbon emission is reduced, the production cost is reduced, and the current global energy-saving and environment-friendly development trend is met; more importantly, rich chemical components in the dyeing wastewater can be reduced, the wastewater treatment cost is reduced, the pollution of the wastewater to the environment is prevented, and the economic loss is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of textile dyeing, and in particular relates to a low-temperature energy-saving dyeing process for yarn and cloth improved by using plant fermentation liquid. Background Art

[0002] The textile industry is an important manufacturing industry that mainly engages in the production and processing of fabrics. Dyeing technology is an indispensable and important part of the textile industry. It can not only give textiles a variety of colors and patterns, but also enhance the added value of textiles. With the continuous advancement of science and technology and social development, people's demand for clothing colors and the natural environmental friendliness of dyes are also increasing.

[0003] At present, when dyeing fabrics, such as yarns and cloths, the dye is often attached to the fiber surface by padding, and under high temperature conditions, the chemical dye molecules and the fiber molecules are cured and bonded to further form a stable color. This type of dyeing process uses high temperature conditions to promote the diffusion and fixation of dye molecules inside the fiber, thereby achieving dyeing of textiles, and has a wide range of applications in the textile industry.

[0004] However, high-temperature dyeing usually needs to be carried out at a temperature of 120-130°C or even higher, which results in a large amount of energy consumption to heat and maintain the temperature of the dye solution during the dyeing process. This not only increases production costs, but also aggravates energy consumption and carbon emissions, causing a certain burden on the environment. At the same time, the use of a large amount of chemical dyes also brings serious environmental pollution problems. Therefore, a green and environmentally friendly low-temperature energy-saving dyeing process is needed to improve it. Summary of the invention

[0005] The object of the present invention is to provide a low-temperature energy-saving dyeing process for yarn and cloth improved by using plant fermentation liquid to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above object, the present invention provides the following technical solution: a low-temperature energy-saving dyeing process for yarn and cloth improved by plant fermentation liquid, wherein the dyeing steps of the low-temperature energy-saving dyeing process are as follows:

[0007] A1, preparation of plant fermentation liquid, selecting plant raw materials rich in natural pigments and active ingredients, fermenting with plant lactobacillus probiotics and extracting the fermentation liquid;

[0008] A2, low-temperature dyeing treatment, the yarn and fabric to be dyed are pre-treated in normal temperature water and then immersed in a low-temperature dye solution containing plant fermentation liquid to achieve color fixation;

[0009] A3, environmentally friendly additives are added. Green printing and dyeing auxiliaries are added during the dyeing process to enhance dye affinity;

[0010] A4, post-processing and finished product inspection, washing and drying the yarn and fabric, and testing the dyeing index.

[0011] Preferably, the steps for preparing the plant fermentation liquid in A1 are:

[0012] B1, thoroughly washing the selected plant raw materials rich in natural pigments and active ingredients, and then drying and crushing the raw materials into fine particles;

[0013] B2, evenly inoculating probiotics into the pretreated fabric raw materials and ensuring that the bacteria and the raw materials are fully mixed;

[0014] B3, When fermenting plant materials, ensure that the fermentation temperature is between 30 and 35 degrees Celsius, and stir the materials regularly to promote oxygen exchange and ensure full contact between the bacteria and the materials;

[0015] B4, after fermentation is completed, the liquid is purified by filtration to remove impurities and raw material particles, and the extraction of the fermentation liquid is completed.

[0016] Preferably, the specific steps of the low-temperature dyeing treatment and the addition of environmentally friendly additives are:

[0017] C1, thoroughly clean the yarn and fabric to be dyed to remove impurities on the surface;

[0018] C2, mixing the purified plant fermentation liquid with an appropriate amount of water to prepare a low-temperature dye solution;

[0019] C3, according to dyeing requirements, select low-toxic, biodegradable green printing and dyeing auxiliaries, and add the auxiliaries evenly into the low-temperature dye solution;

[0020] C4, immersing the pretreated yarn and fabric in a low-temperature dye solution, controlling the temperature to 40° to 60°;

[0021] C5, stir the dye solution regularly during dyeing to ensure that the dye is evenly adsorbed on the fiber and complete low-temperature dyeing.

[0022] Preferably, the low-temperature energy-saving dyeing process performs a sufficient water washing treatment on the yarn or fabric after dyeing is completed to remove surface floating color and residual auxiliaries, and the yarn and fabric are dried after washing.

[0023] Preferably, the post-processing and finished product inspection steps will perform color fastness testing on the yarn and fabric after drying, and evaluate the dyeing uniformity through a colorimeter to ensure that the dyeing effect is consistent without obvious color difference or color spots.

[0024] Preferably, after the post-processing and finished product inspection steps are completed, the air permeability and fiber strength of the finished product are evaluated according to the product quality standards, and unqualified finished products should be reworked in a timely manner.

[0025] Preferably, the green printing and dyeing auxiliaries include bio-based leveling agents and formaldehyde-free fixing agents, wherein the leveling agent can improve the dyeing effect by improving the dispersion and uniformity of the dye on the fiber, while the fixing agent is responsible for combining with the dye molecules to form stable chemical bonds and enhance the fixing effect of the dye.

[0026] Preferably, after the fermentation in step B4 is completed, the fermentation broth includes lactic acid, polyphenols and flavonoids.

[0027] The beneficial effects of the present invention are as follows:

[0028] 1. In the dyeing process, the present invention significantly reduces the energy consumption in the dyeing process and reduces carbon emissions through a low-temperature process below 60°C, which helps to reduce production costs and conforms to the current global trend of energy conservation and environmental protection. Furthermore, by adding low-toxic, biodegradable environmentally friendly additives, it can not only enhance the effect of the dye, but more importantly, it can also reduce the rich chemical components in the dyeing wastewater, reduce the cost of wastewater treatment, prevent wastewater from polluting the environment, and reduce economic losses.

[0029] 2. The present invention dyes fabrics with plant fermentation liquid under low temperature conditions, so that the natural pigments in the fermentation liquid diffuse more evenly on the fibers, reducing the problems of dye aggregation and uneven penetration caused by high temperature. In addition, under low temperature conditions, the degree of damage to the fibers is reduced, reducing the problems of decreased fabric strength and deterioration of texture caused by high temperature treatment, so that the fabrics after low-temperature dyeing are more durable and beautiful while maintaining their original performance, thereby improving product quality.

[0030] 3. The present invention prepares the plant fermentation liquid dye so that when the dye is used to dye the fabric, the lactic acid, polyphenols and flavonoids in the dye can make the dye molecules diffuse more thoroughly on the fiber, so that the color of the dyed fabric is more uniform and brighter, and the dyeing quality is improved. At the same time, the plant fermentation dye uses the natural pigment produced by the plant itself to dye the fabric, so that when users use the fabric, it will not cause damage to the skin, is more gentle, improves the comfort of the fabric, and meets the various requirements of consumers for the fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a dyeing process flow chart of the present invention. DETAILED DESCRIPTION

[0032] 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.

[0033] like Figure 1 As shown, the embodiment of the present invention provides a low-temperature energy-saving dyeing process for yarn and fabric improved by using plant fermentation liquid, and the dyeing steps of the low-temperature energy-saving dyeing process are:

[0034] A1, preparation of plant fermentation liquid, selecting plant raw materials rich in natural pigments and active ingredients, fermenting with plant lactobacillus probiotics and extracting the fermentation liquid;

[0035] The fermentation liquid not only has good dyeing properties, but also promotes the adsorption and fixation of dyes on fibers;

[0036] A2, low-temperature dyeing treatment, the yarn and fabric to be dyed are pre-treated in normal temperature water and then immersed in a low-temperature dye solution containing plant fermentation liquid to achieve color fixation;

[0037] By controlling the dyeing temperature within a suitable low temperature range (below 60°C) and utilizing the promoting effect of the active ingredients in the fermentation liquid, the dye can be uniformly adsorbed on the fiber and quickly fixed.

[0038] A3, environmentally friendly additives are added. Green printing and dyeing auxiliaries are added during the dyeing process to enhance dye affinity;

[0039] Enhance the affinity and fixation effect of dyes through green and environmentally friendly auxiliaries, while reducing the impact on the environment;

[0040] A4, post-processing and finished product inspection, washing and drying the yarn and fabric, and testing the dyeing index to ensure that the product quality meets the relevant standards.

[0041] During the dyeing process, the low-temperature process below 60°C significantly reduces energy consumption and carbon emissions, which helps reduce production costs and is in line with the current global trend of energy conservation and environmental protection. The addition of low-toxic, biodegradable environmentally friendly additives can not only enhance the effect of the dye, but more importantly, it can also reduce the chemical components rich in dyeing wastewater, reduce the cost of wastewater treatment, prevent wastewater pollution to the environment, and reduce economic losses.

[0042] The steps for preparing the plant fermentation liquid in A1 are as follows:

[0043] B1, washing the selected plant raw materials rich in natural pigments and active ingredients (e.g. okra, rich in flavonoids, blue indigo grass, rich in indigo pigment) thoroughly (removing impurities such as dirt and pesticide residues on the surface), and then drying and crushing the raw materials into fine particles;

[0044] B2, evenly inoculating probiotics into the pretreated fabric raw materials and ensuring that the bacteria and the raw materials are fully mixed;

[0045] According to the characteristics of plant raw materials, suitable probiotics are selected for fermentation, such as Lactobacillus plantarum. These bacteria can produce beneficial substances such as lactic acid and promote the release of plant active ingredients;

[0046] B3, When fermenting plant materials, ensure that the fermentation temperature is between 30 and 35 degrees Celsius, and stir the materials regularly to promote oxygen exchange and ensure full contact between the bacteria and the materials;

[0047] During the fermentation process, not only the temperature is guaranteed, but also the pH value of the fermentation liquid must be regularly tested to maintain the best growth environment for probiotics;

[0048] B4, after fermentation is completed, the liquid is purified by filtration to remove impurities and raw material particles, and the extraction of the fermentation liquid is completed.

[0049] The specific steps of low temperature dyeing treatment and adding environmentally friendly additives are as follows:

[0050] C1, thoroughly clean the yarn and fabric to be dyed to remove impurities on the surface;

[0051] When using clean water for cleaning, the yarn and fabric need to be dehydrated to reduce the moisture content during the dyeing process and improve the dyeing efficiency;

[0052] C2, mixing the purified plant fermentation liquid with an appropriate amount of water to prepare a low-temperature dye solution;

[0053] C3, according to dyeing requirements, select low-toxic, biodegradable green printing and dyeing auxiliaries such as bio-based leveling agents and formaldehyde-free fixing agents, and add the auxiliaries evenly into the low-temperature dye solution;

[0054] Leveling agents can improve the dyeing effect by improving the dispersion and uniformity of dyes on fibers, while also reducing the aggregation and precipitation of dyes on fibers and reducing dyeing costs, while fixing agents are responsible for combining with dye molecules to form stable chemical bonds and enhance the dye fixing effect;

[0055] C4, immersing the pretreated yarn and fabric in a low-temperature dye solution, controlling the temperature to 40° to 60°;

[0056] C5, stir the dye solution regularly during dyeing to ensure that the dye is evenly adsorbed on the fiber and complete low-temperature dyeing.

[0057] Under low temperature conditions, fabrics are dyed with plant fermentation liquid, so that the natural pigments in the fermentation liquid can diffuse more evenly on the fibers, reducing the problems of dye aggregation and uneven penetration caused by high temperature. In addition, under low temperature conditions, the degree of fiber damage is reduced, reducing the problems of decreased fabric strength and deterioration of texture caused by high temperature treatment. This makes the fabrics dyed at low temperature more durable and beautiful while maintaining their original performance, thereby improving product quality.

[0058] Among them, the low-temperature energy-saving dyeing process performs a sufficient water washing treatment on the yarn or fabric after dyeing is completed to remove surface floating color and residual auxiliaries, and the yarn and fabric are dried after washing.

[0059] During the washing process, the water temperature and water flow rate parameters should be controlled to avoid damage to the fiber. During the drying process, the temperature should be controlled below 40° to avoid overheating and deformation of the fiber or damage to the dyeing effect.

[0060] Among them, the post-processing and finished product inspection steps will conduct color fastness tests on the dried yarn and fabric (including rubbing color fastness, washing color fastness and sunlight color fastness), and evaluate the dyeing uniformity through a colorimeter to ensure consistent dyeing effects without obvious color differences or color spots.

[0061] Among them, after the post-processing and finished product inspection steps are completed, the air permeability and fiber strength of the finished product are evaluated according to the product quality standards, and unqualified finished products must be reworked in a timely manner.

[0062] Among them, the green printing and dyeing auxiliaries include bio-based leveling agents and formaldehyde-free fixing agents. The leveling agent can improve the dyeing effect by improving the dispersion and uniformity of the dye on the fiber, while reducing the aggregation and precipitation of the dye on the fiber and reducing the dyeing cost. The fixing agent is responsible for combining with the dye molecules to form stable chemical bonds and enhance the dye fixing effect.

[0063] Among them, after the fermentation in step B4 is completed, the fermentation liquid includes lactic acid, polyphenols and flavonoids (probiotics will also produce enzymes, organic acids and peptide metabolites during fermentation, and these products can promote the adsorption and fixation of dyes on fibers).

[0064] Lactic acid can adjust the pH value in the fermentation liquid to enhance the adsorption and fixation of the dye on the fiber, while polyphenol compounds can interact with the fiber during the dyeing process to improve the dyeing fastness and uniformity. Finally, flavonoids have multiple biological activities such as antioxidant, anti-inflammatory and antibacterial, and can work synergistically with other ingredients to improve the stability of the dye and the dyeing effect.

[0065] Through the preparation of plant fermentation liquid dye, when this dye is used to dye fabrics, the lactic acid, polyphenols and flavonoids in it will make the dye molecules diffuse more thoroughly on the fibers, making the dyed fabric color more uniform and brighter, thereby improving the dyeing quality. At the same time, the plant fermentation dye uses the natural pigments produced by the plants themselves to dye the fabrics, so that when users use the fabrics, it will not cause damage to the skin, is more gentle, improves the comfort of the fabrics, and meets the various requirements of consumers for fabrics.

[0066] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0067] 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 low-temperature energy-saving dyeing process for yarn and fabric improved by plant fermentation liquid, characterized in that: The dyeing steps of the low-temperature energy-saving dyeing process are: A1, preparation of plant fermentation liquid, selecting plant raw materials rich in natural pigments and active ingredients, fermenting with plant lactobacillus probiotics and extracting the fermentation liquid; A2, low-temperature dyeing treatment, the yarn and fabric to be dyed are pre-treated in normal temperature water and then immersed in a low-temperature dye solution containing plant fermentation liquid to achieve color fixation; A3, environmentally friendly additives are added. Green printing and dyeing auxiliaries are added during the dyeing process to enhance dye affinity; A4, post-processing and finished product inspection, washing and drying the yarn and fabric, and testing the dyeing index.

2. The low-temperature energy-saving dyeing process for yarn and fabric improved by plant fermentation liquid according to claim 1, characterized in that: The steps for preparing the plant fermentation liquid in A1 are as follows: B1, thoroughly washing the selected plant raw materials rich in natural pigments and active ingredients, and then drying and crushing the raw materials into fine particles; B2, evenly inoculating probiotics into the pretreated fabric raw materials and ensuring that the bacteria and the raw materials are fully mixed; B3, When fermenting plant materials, ensure that the fermentation temperature is between 30 and 35 degrees Celsius, and stir the materials regularly to promote oxygen exchange and ensure full contact between the bacteria and the materials; B4, after fermentation is completed, the liquid is purified by filtration to remove impurities and raw material particles, and the extraction of the fermentation liquid is completed.

3. The low-temperature energy-saving dyeing process for yarn and fabric improved by plant fermentation liquid according to claim 1, characterized in that: The specific steps of the low-temperature dyeing treatment and the addition of environmentally friendly additives are: C1, thoroughly clean the yarn and fabric to be dyed to remove impurities on the surface; C2, mixing the purified plant fermentation liquid with an appropriate amount of water to prepare a low-temperature dye solution; C3, according to dyeing requirements, select low-toxic, biodegradable green printing and dyeing auxiliaries, and add the auxiliaries evenly into the low-temperature dye solution; C4, immersing the pretreated yarn and fabric in a low-temperature dye solution, controlling the temperature to 40° to 60°; C5, stir the dye solution regularly during dyeing to ensure that the dye is evenly adsorbed on the fiber and complete low-temperature dyeing.

4. The low-temperature energy-saving dyeing process for yarn and fabric improved by plant fermentation liquid according to claim 1, characterized in that: The low-temperature energy-saving dyeing process performs a thorough water washing treatment on the yarn or fabric after dyeing is completed to remove surface floating color and residual auxiliaries, and after washing, the yarn and fabric are dried.

5. The low-temperature energy-saving dyeing process for yarn and fabric improved by plant fermentation liquid according to claim 1, characterized in that: The post-processing and finished product inspection steps will test the color fastness of the yarn and fabric after drying, and evaluate the dyeing uniformity through a colorimeter to ensure that the dyeing effect is consistent without obvious color differences or color spots.

6. The low-temperature energy-saving dyeing process for yarn and fabric improved by plant fermentation liquid according to claim 4, characterized in that: After the post-processing and finished product inspection steps are completed, the air permeability and fiber strength of the finished product are evaluated according to the product quality standards, and unqualified finished products must be reworked in a timely manner.

7. The low-temperature energy-saving dyeing process for yarn and fabric improved by plant fermentation liquid according to claim 3, characterized in that: The green printing and dyeing auxiliaries include bio-based leveling agents and formaldehyde-free fixing agents, wherein the leveling agent can improve the dyeing effect by improving the dispersion and uniformity of the dye on the fiber, while the fixing agent is responsible for combining with the dye molecules to form stable chemical bonds and enhance the fixing effect of the dye.

8. The low-temperature energy-saving dyeing process for yarn and fabric improved by plant fermentation liquid according to claim 2, characterized in that: After the fermentation in step B4 is completed, the fermentation liquid includes lactic acid, polyphenols and flavonoids.

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