Dyeing and finishing process of environmentally friendly cool fabric

Abstract

The present invention belongs to the technical field of textile dyeing and finishing, and relates to a dyeing and finishing process for environmentally friendly cool fabrics. The dyeing and finishing process includes cloth boiling, dyeing and washing, cotton dyeing, post-processing, color fixing, softening and shaping and finishing. In each process, the temperature and pH value are precisely controlled to ensure that the dye reacts with the fiber under optimal conditions. In addition, auxiliaries and optimizers of natural origin are introduced into the dyeing and washing and cotton dyeing processes, and a preferred ice-feeling finishing agent is used in the shaping and finishing process to improve the dyeing and finishing quality. Through the synergistic effect of multiple natural auxiliaries, the amount of chemical agents used is reduced, a green and environmentally friendly dyeing and finishing process is realized, and the problems of large amount of chemical agents used and environmental pollution in the prior art are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of textile dyeing and finishing, and relates to a dyeing and finishing process for an environmentally friendly cool fabric. Background Art

[0002] In the field of textile technology, dyeing and finishing is an important part of the processing, including multiple steps such as dyeing and finishing, which aims to improve the appearance, feel and functionality of the fabric. As consumers' requirements for textile quality continue to increase, dyeing and finishing technology is also constantly improving. Among them, disperse dyes are widely used in the dyeing of synthetic fibers such as polyester due to their bright colors and wide color spectrum. However, due to the compact molecular structure of synthetic fibers, how to improve their dyeing rate and color fastness has always been the focus of research.

[0003] The existing dyeing process relies on the control of temperature and pH and the addition of auxiliaries to achieve dyeing and color fixation. Disperse dyeing is usually carried out under high temperature and high pressure conditions, supplemented by auxiliaries such as dispersants and leveling agents to improve dyeing rate and color fastness. However, even under such conditions, there are still problems of low dyeing rate and poor color fastness, especially under high temperature and high pressure conditions, which can easily cause changes in the molecular structure of polyester, affecting color fastness and color shade.

[0004] Post-treatment technology is crucial to improving the color fastness, feel, softness and wrinkle resistance of textiles. In this process, chemical agents such as softeners and color fixatives are needed to enhance the performance of textiles. However, the use of a large number of chemical agents not only increases production costs, but also brings environmental pollution problems. In addition, the high energy consumption of high temperature and high pressure dyeing further increases production costs, which does not meet the requirements of energy conservation and emission reduction.

[0005] With the improvement of environmental awareness, reducing pollutant emissions in the production process, reducing the use of chemical agents, reducing energy consumption, and achieving green and environmentally friendly dyeing and finishing processes have become issues that need to be urgently addressed. It is urgent to develop new dyeing and finishing processes to improve dyeing efficiency and product quality, and effectively reduce the impact on the environment, so as to promote the textile industry to develop in a more sustainable direction. Summary of the invention

[0006] The invention aims at the deficiencies of dyeing and finishing processes in the prior art and provides a dyeing and finishing process for an environmentally friendly cool fabric.

[0007] One object of the present invention is achieved by the following technical solutions:

[0008] A dyeing and finishing process for an environmentally friendly cool fabric, the dyeing and finishing process comprising the following steps:

[0009] (1) Boiling cloth: Place the fabric in a dye vat, add scouring agent, heavy degreasing agent, alkali agent and bleaching agent to react, then drain the liquid, and then add acid solution to adjust the pH to 6-7.5;

[0010] (2) Dyeing and washing: Add natural auxiliaries, then add acid solution to adjust the pH to 4.5-5, then add disperse dyes and leveling agents to dye and wash the fabric, and perform reduction cleaning;

[0011] (3) Cotton dyeing: adding polishing enzyme, optimizer, reactive dye, Na2SO4 and Na2CO3 to dye the fabric;

[0012] (4) Post-treatment: acid washing, soap washing and water washing of the fabric;

[0013] (5) Fixing and softening: Add fixing agent and softening agent to fix and soften the fabric, and add acid solution to adjust the pH to 6-7.5;

[0014] (6) Finishing: Dehydration, width opening, drying, finishing and shaping of fabrics.

[0015] Preferably, the cloth boiling comprises the following steps: placing the fabric in a dye vat, adding a refining agent to make its concentration in the dye bath 0.5-1.0 g / L, adding a heavy degreasing agent to make its concentration in the dye bath 0.5-1.0 g / L, adding an alkali agent to make its concentration in the dye bath 1.0-1.5 g / L, and adding a bleaching agent to make its concentration in the dye bath 1-5 g / L, with a bath ratio of 1:(15-20); heating to 90-95°C, keeping the temperature for 45-60 minutes, then cooling to 60-70°C to drain, and then adding an acid solution to adjust the pH to 6-7.5.

[0016] Liquor Ratio refers to the ratio of the mass of the dyed fabric to the volume of the dye liquor used during the dyeing process. This is an important process parameter used to describe the amount of dye liquor relative to the fabric during the dyeing process. The choice of liquor ratio will affect the dyeing effect, cost and environmental factors.

[0017] In the cloth boiling step, preferably, the alkaline agent is sodium hydroxide and the bleaching agent is hydrogen peroxide (H2O2).

[0018] The acid solution used to adjust the pH mentioned herein includes one or more of acetic acid, citric acid, phosphoric acid, sulfuric acid, hydrochloric acid, formic acid, and carbonic acid. Acetic acid is more preferred. The concentration of the acid solution is preferably 0.1-1.0 g / L.

[0019] Preferably, the dyeing and washing comprises the following steps: adding natural auxiliaries to 30-50°C water to make its concentration in the dye bath 0.5-2.0 g / L, then adding acid solution to adjust the pH to 4.5-5; then adding disperse dyes and leveling agents to make their concentration in the dye bath 0.5-1.0 g / L; heating to 60-70°C after running for 3-5 minutes, then heating to 70-80°C at a rate of 2-5°C / min, then heating to 120-140°C at a rate of 1-1.5°C / min and keeping warm for 45-60 minutes, and finally performing reduction washing.

[0020] In dyeing and finishing, OWF (On Weight of Fabric) means "weight of fabric". When referring to the dosage of a chemical, using OWF means that the amount of the chemical added is calculated based on the dry weight of the fabric. OWF is a relative unit of measurement, widely used in the dyeing and finishing industry, especially when formulating the amount of chemicals used in dyeing, printing, finishing and other processes. This method facilitates formula standardization, making the production process more controllable and repeatable.

[0021] In the dyeing and washing steps, preferably, the natural auxiliary agent is polyaspartic acid and / or sodium gluconate.

[0022] In the dyeing and washing step, preferably, the disperse dyes include 0.30-0.35% OWF yellow brown WF-XF, 0.01-0.05% OWF ruby ​​WF-XF, and 0.2-0.4% OWF zhiqing WF-XF.

[0023] In the dyeing and washing steps, preferably, reduction washing comprises: cooling to 40-60°C at a rate of 1-5°C / min, adding soaping agent to make its concentration in the dye bath 1-5g / L, adding NaOH to make its concentration in the dye bath 1-5g / L, adding Na2S2O4 to make its concentration in the dye bath 1-5g / L, and reducing washing for 10-30min.

[0024] In the dyeing and washing steps, the present invention improves the dyeing quality by controlling the pH value of the system and adding natural auxiliaries; at the same time, a leveling agent is used to help the dye to be evenly dispersed and promote its migration into the fiber; three heatings are performed, the first heating causes the dye to begin to disperse and slightly penetrate, the second heating helps the dye to be better dispersed and migrate into the fiber, and the three heatings ensure that the dye fully penetrates and stably dyes under high temperature and high pressure conditions; finally, reduction washing is performed to remove unfixed dyes and other impurities, thereby improving color fastness and cleanliness.

[0025] Preferably, the cotton dyeing comprises the following steps: adding polishing enzyme to 30-50°C water so that its concentration in the dye bath is 0.1-1.0g / L, and adding 0.9-4.0% OWF optimizer and running for 20-30min; adding reactive dye and running for 10-20min; adding Na2SO4 so that its concentration in the dye bath is 50-70g / L; adding Na2CO3 so that its concentration in the dye bath is 10-30g / L; then heating to 60-70°C at a rate of 0.1-1.0°C / min, keeping warm for 60-90min and then draining.

[0026] In the cotton dyeing step, preferably, the optimizer comprises: 0.1-0.5% OWF EDTA, 0.5-2% OWF mannitol, 0.2-1% OWF glycine, and 0.1-0.5% OWF L-histidine.

[0027] The present invention innovatively introduces an optimizer in the cotton dyeing step, which is composed of biological materials of natural origin. Specifically, EDTA is introduced to chelate metal ions to prevent them from inhibiting the activity of the polishing enzyme, while improving the stability of the dye bath; mannitol is used as a stabilizer to protect the polishing enzyme from heat and oxidation, thereby improving its stability; glycine is used as a buffer and stabilizer to adjust the pH value and protect the structure of the enzyme, thereby improving its activity; L-histidine is used as a pH buffer and stabilizer to ensure that the polishing enzyme is in the optimal active state and prevent its inactivation. Under the synergistic effect of multiple components of the optimizer, the polishing enzyme is protected from multiple aspects, its activity and stability are improved, and the polishing enzyme can function more effectively, thereby improving the dyeing effect and the feel of the fabric.

[0028] In the cotton dyeing step, preferably, the reactive dyes include: 0.80-1.0% OWF yellow K-3RS, 0.40-0.45% OWF red K-3BS, and 1.35-1.40% OWF cyan K-BF.

[0029] In the cotton dyeing step, preferably, Na2SO4 is added twice, and the specific operation is: first add 45-55wt% Na2SO4 and run for 20-30 minutes, and then add the remaining Na2SO4 and run for 20-30 minutes.

[0030] In the cotton dyeing step, preferably, Na2CO3 is added in batches, and the specific operation is: first add 10~15wt% Na2CO3 and run for 20~30min, then add 20~25wt% Na2CO3 and run for 20~30min, then add 30~35wt% Na2CO3 and run for 10~20min, and then add the remaining Na2CO3 and run for 10~30min.

[0031] In the cotton dyeing step, the present invention adopts a polishing enzyme to remove fluff on the surface of cotton fibers, so that the surface of the fabric is smoother, thereby improving the feel and appearance of the fabric; an optimizer composed of biological materials of natural origin can improve the activity and stability of the polishing enzyme, thereby improving the dyeing effect and reducing the impact on the environment; the active dye forms a covalent bond with the cotton fiber to achieve a firm dyeing effect; sodium sulfate improves the solubility and dyeing fastness of the dye and promotes the penetration of the dye into the fiber; soda ash is an indispensable auxiliary agent in the dyeing process of the active dye, which can promote the chemical reaction between the dye and the cotton fiber to form a covalent bond, thereby improving the color fastness; at the same time, by slowly heating and keeping the temperature, it is ensured that the chemical reaction between the dye and the fiber is fully carried out, thereby improving the dyeing effect.

[0032] Preferably, the post-treatment comprises the following steps: water inlet, adding 1-5% OWF acid solution, running for 5-10 minutes and then draining; water inlet, adding soaping agent so that its concentration in the dye bath is 1-5 g / L, heating to 95°C and keeping it warm for 15-30 minutes, then cooling to 60-70°C and draining; water inlet again, adding soaping agent so that its concentration in the dye bath is 1-5 g / L, heating to 95°C and keeping it warm for 15-30 minutes, then cooling to 60-70°C and draining; water inlet, heating to 75-85°C and keeping it warm for 10-30 minutes, then cooling to 60-70°C and draining.

[0033] Preferably, the color fixing and softening comprises the following steps: taking in water, adding a color fixing agent to make its concentration in the dye bath be 1-5 g / L, adding a softening agent to make its concentration in the dye bath be 3-8 g / L, adding an acid solution to adjust the pH to 6-7.5, and discharging the liquid out of the tank after running for 10-30 minutes.

[0034] Preferably, the shaping and finishing step comprises the following steps: dehydrating, opening the fabric, drying the fabric, immersing the fabric in a finishing agent for padding, and then sending the fabric into a shaping machine for shaping.

[0035] In the styling and finishing step, preferably, the finishing agent is an ice-sensitive silicone oil finishing agent, and the concentration of the finishing agent in the dye bath is 60-90 g / L.

[0036] In the shaping and finishing step, preferably, the bath ratio during padding is 1:(25-35).

[0037] In the shaping and finishing step, preferably, the shaping temperature is 140-160°C.

[0038] The shaping and finishing step of the present invention has the following effects and purposes: on the one hand, the shaping and finishing can effectively eliminate the creases generated in the dyeing process of the fabric, maintain the good dimensional stability and smooth appearance of the finished product, ensure that the fabric is not easily deformed in subsequent use, and improve the overall texture and aesthetics; on the other hand, the use of an ice-feeling finishing agent can further improve the cooling performance of the fabric, giving the fabric a unique tactile experience, making it cooler and more comfortable when worn, especially suitable for use in summer or high temperature environments, and meeting consumers' demand for functional fabrics.

[0039] The second object of the present invention is achieved by the following technical solutions:

[0040] A production process for environmentally friendly cool fabrics, wherein the production process includes the dyeing and finishing process.

[0041] The third object of the present invention is achieved by the following technical solutions:

[0042] An environmentally friendly cool fabric is produced by the production process.

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] 1. The dyeing and finishing process of an environmentally friendly cool fabric provided by the present invention ensures that the dye reacts with the fiber under the best conditions by accurately controlling the temperature and pH value in each process. Reasonable temperature control not only ensures the good dispersion of the dye, but also avoids the change of the molecular structure of polyester under high temperature and high pressure conditions, and improves the dyeing rate; the adjustment of the pH value ensures that the dye combines with the fiber under the most suitable conditions, and enhances the stability and color fastness of the dyeing; in addition, a variety of auxiliaries are added to further optimize the dyeing effect, ensure uniform dyeing, and improve the chemical stability of the dye, thereby improving the dyeing quality.

[0045] 2. The dyeing and finishing process of an environmentally friendly cool fabric provided by the present invention introduces auxiliaries and optimizers of natural origin in the dyeing, washing and cotton dyeing steps, which have high biodegradability and can be rapidly decomposed in the natural environment without causing long-term pollution to the environment; and the synergistic effect of multiple natural auxiliaries can enhance the dye uptake and color fastness of the dye, make the fabric surface smoother, improve the feel and appearance of the fabric, and improve the dyeing quality.

[0046] 3. The dyeing and finishing process of an environmentally friendly cool fabric provided by the present invention adopts a preferred ice-feeling silicone oil finishing agent in the shaping and finishing process, which improves the cool performance of the fabric, gives the fabric a unique tactile experience, makes it cooler and more comfortable when worn, and also enhances its air permeability and moisture absorption by improving the surface properties of the fabric; at the same time, it also reduces the amount of chemical agents used, realizes a green and environmentally friendly dyeing and finishing process, and solves the problems of large amount of chemical agents used and environmental pollution in the prior art. DETAILED DESCRIPTION

[0047] The technical solution of the present invention is further described below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

[0048] In the embodiments and comparative examples of the present invention, the weaving raw materials used are 30S / cotton 70 / rare earth viscose 30 blended yarn of Lanming Material Technology (Shanghai) Co., Ltd. and 75D Sorona polyester filament of Shanghai Jundian Textile Materials Co., Ltd., and the process parameters are: 30S / cotton 70 / rare earth viscose 30 yarn length is 15.8 cm / 50 needles, and 75D Sorona polyester filament yarn length is 14.8 cm / 50N.

[0049] Example 1

[0050] The dyeing and finishing process of an environmentally friendly cool fabric in this embodiment includes the following steps:

[0051] (1) Place the fabric in a dyeing vat, add scouring agent HK-1031 (Ningbo Huake Auxiliary Agent Co., Ltd.) to make its concentration in the dye bath 0.5g / L, add heavy degreasing agent 1115-B (Guangdong Demei Chemical Co., Ltd.) to make its concentration in the dye bath 0.8g / L, add NaOH to make its concentration in the dye bath 1.3g / L, add H2O2 to make its concentration in the dye bath 3.0g / L, and the bath ratio in the dye bath is 1:20; heat it to 95℃ and keep it for 45min, then cool it to 70℃ and drain it; after draining, add water again, add 0.8g / L acetic acid to adjust the pH to 7, heat it to 60℃ and keep it for 20min, then drain it;

[0052] (2) Add polyaspartic acid to 40°C water to make its concentration in the dye bath 0.5 g / L, add sodium gluconate to make its concentration in the dye bath 0.5 g / L, add acetic acid to make its concentration in the dye bath 1.0 g / L, and adjust the pH to 4.8; then add disperse dyes (Zhejiang Wanfeng Chemical Co., Ltd., 0.31% yellow brown WF-XF, 0.04% ruby ​​WF-XF, 0.3% Zhiqing WF-XF), add ultra-fine denier leveling agent DM-2110 (Ningbo Boyata Trading Co., Ltd.) and mix them in the dye bath. The concentration in the dye bath is 0.5g / L; after running for 5 minutes, the temperature is raised to 60℃, then raised to 80℃ at a rate of 2℃ / min, then raised to 130℃ at a rate of 1℃ / min and kept warm for 45 minutes; then cooled to 60℃ at a rate of 1℃ / min, and then non-foaming soap detergent SW (BASF) was added to make its concentration in the dye bath 1g / L, NaOH was added to make its concentration in the dye bath 1g / L, and Na2S2O4 was added to make its concentration in the dye bath 3g / L for reduction cleaning for 10 minutes;

[0053] (3) Add polishing enzyme D480 (Ningbo Boyata Trading Co., Ltd.) to 40℃ water to make its concentration in the dye bath 0.15g / L, and add 0.3% OWF EDTA, 1% OWF mannitol, 0.5% OWF glycine, and 0.2% OWF L-histidine and run for 20 minutes; add reactive dyes (Korea Kyung-in Company, 0.9% OWF Yellow K-3RS, 0.44% OWF Red K-3BS, 1.38% OWF Blue K-BF) and run for 10 minutes; add Na2SO4 twice to make its concentration in the dye bath 60g / L (first add 50wt% Na2SO4 and run for 30 minutes, then add the remaining 50wt% Na2SO4 and run for 20 minutes); add Na2CO3 in batches to make its concentration in the dye bath 20g / L (first add 10wt% Na2CO3 and run for 20 minutes, then add 20wt% Na2CO3 and run for 20 minutes, then add 30wt% Na2CO3 for 10 min, then add the remaining 40wt% Na2CO3 and run for 10 min); then heat to 60°C at a rate of 0.5°C / min, keep warm for 60 min and drain;

[0054] (4) Intake water, add 1% OWF acetic acid, run for 7 minutes and then drain; Intake water, add non-foaming soap detergent SW (BASF) to make its concentration in the dye bath 2g / L, heat to 95℃ and keep it for 15 minutes, then cool to 70℃ and drain; Intake water again, add non-foaming soap detergent SW (BASF) to make its concentration in the dye bath 2g / L, heat to 95℃ and keep it for 15 minutes, then cool to 70℃ and drain; Intake water again, heat to 80℃ and keep it for 10 minutes, then cool to 70℃ and drain;

[0055] (5) Add water, add color fixative G230 (Ningbo Lianhua Chemical Co., Ltd.) to make its concentration in the dye bath 3g / L, add softener DM-3126 (Ningbo Lianhua Chemical Co., Ltd.) to make its concentration in the dye bath 5g / L, add acetic acid to make its concentration in the dye bath 0.15g / L, adjust the pH to 7.0, run for 10 minutes, and drain the liquid out of the tank;

[0056] (6) The fabric is dehydrated, opened, and dried, and then immersed in an ice-feeling finishing agent solution (the concentration of ice-feeling silicone oil 6773 (Jiangmen Green Textile Technology Co., Ltd.) in the solution is 20 g / L; the concentration of ice-feeling silicone oil 8860 (Jiangmen Green Textile Technology Co., Ltd.) in the solution is 60 g / L) for padding, and the bath ratio during padding is 1:30; then the fabric is sent to a setting machine for setting, and the setting temperature is 150°C, the setting speed is 20 yards / min, the setting width is 165 cm, and the finished product weight is 225 g / m 2 .

[0057] Comparative Example 1

[0058] The difference between Comparative Example 1 and Example 1 is that no natural auxiliary agent is added in the dyeing and finishing process of Comparative Example 1, which specifically comprises the following steps:

[0059] (1) Same as step (1) of Example 1;

[0060] (2) Add acetic acid to 40℃ water to make its concentration in the dye bath 1.0g / L, and adjust the pH to 4.8; then add disperse dyes (Zhejiang Wanfeng Chemical Co., Ltd., 0.31% yellow brown WF-XF, 0.04% ruby ​​WF-XF, 0.3% Zhiqing WF-XF), and add ultrafine denier leveling agent DM-2110 (Ningbo Boyata Trading Co., Ltd.) to make its concentration in the dye bath 0.5g / L; after running for 5 minutes, heat it to 60℃, then increase it to 80℃ at a rate of 2℃ / min, and then increase it to 130℃ at a rate of 1℃ / min and keep it warm for 45 minutes; then cool it to 60℃ at a rate of 1℃ / min, add non-foaming soap detergent SW (BASF) to make its concentration in the dye bath 1g / L, add NaOH to make its concentration in the dye bath 1g / L, and add Na2S2O4 to make its concentration in the dye bath 3g / L for reduction cleaning for 10 minutes;

[0061] (3)-(6) are the same as steps (3)-(6) of Example 1.

[0062] Comparative Example 2

[0063] The difference between Comparative Example 2 and Example 1 is that no optimizer is added in the dyeing and finishing process of Comparative Example 2, which specifically includes the following steps:

[0064] (1)-(2) are the same as steps (1)-(2) of Example 1;

[0065] (3) Add polishing enzyme D480 (Ningbo Boyata Trading Co., Ltd.) to 40℃ water to make its concentration in the dye bath 0.15g / L; add reactive dyes (Korea Kyungin Company, 0.9% OWF Yellow K-3RS, 0.44% OWF Red K-3BS, 1.38% OWF Blue K-BF) and run for 10 minutes; add Na2SO4 twice to make its concentration in the dye bath 60g / L (first add 50wt% Na2SO4 and run for 30 minutes, then add the remaining 50wt% Na2SO4 and run for 20 minutes); add Na2CO3 in batches to make its concentration in the dye bath 20g / L (first add 10wt% Na2CO3 and run for 20 minutes, then add 20wt% Na2CO3 and run for 20 minutes, then add 30wt% Na2CO3 and run for 10 minutes, then add the remaining 40wt% Na2CO3 for 10 min); then raise the temperature to 60°C at a rate of 0.5°C / min and keep it for 60 min before draining;

[0066] (4)-(6) are the same as steps (4)-(6) of Example 1.

[0067] The fabrics prepared in the above examples and comparative examples were tested for cooling performance and color fastness performance, and the specific testing standards are as follows:

[0068] Cooling performance: GB / T 35263-2017 "Testing and evaluation of instantaneous cooling performance of textiles", qualified standard ≧3;

[0069] Color fastness to water: GB / T5713-2013 "Textiles - Tests for Color Fastness - Tests for Color Fastness to Water", qualified standard: color change ≧3-4, staining ≧3;

[0070] Color fastness to perspiration: GB / T3922-2013 "Textiles - Tests for color fastness - Color fastness to perspiration", qualified standard: acid: discoloration ≧3-4, acid: staining ≧3, alkaline: discoloration ≧3-4, alkaline: staining ≧3;

[0071] Color fastness to rubbing: GB / T3920-2008 "Textiles - Tests for Color Fastness - Color Fastness to Rubbing", qualified standard: dry friction ≥3-4, wet friction ≥3;

[0072] Color fastness to washing with soap: GB / T3921-2008 "Textiles - Tests for Color Fastness - Color Fastness to Washing with Soap", qualified standard: color change ≧3-4, staining ≧3-4;

[0073] Color fastness to light: GB / T8427-2019 "Textile color fastness test - color fastness to artificial light", qualified standard dark color ≧4;

[0074] The specific test results are shown in Table 1.

[0075] Table 1 Performance test results of environmentally friendly and low-carbon cool functional fabrics in Example

[0076]

[0077] As shown in Table 1, it can be seen that the fabric prepared by the technical solution of the present invention has good effects on cooling performance and color fastness performance, exceeds the qualified technical requirements, and meets the national superior product standards; without using the natural additives / optimizers in the technical solution of the present invention, the color fastness performance of the prepared fabric is greatly reduced, and the cooling performance effect is not good, and the overall performance is far inferior to the level of the embodiment.

[0078] The various aspects, embodiments, and features of the present invention should be considered to be illustrative in all aspects and not limiting of the present invention, the scope of which is defined solely by the claims. Other embodiments, modifications, and uses will be apparent to those skilled in the art without departing from the spirit and scope of the claimed invention.

[0079] In the preparation method of the present invention, the order of each step is not limited to the order listed. For those skilled in the art, without creative work, the order of each step is also within the protection scope of the present invention. In addition, two or more steps or actions can be performed simultaneously.

[0080] Finally, it should be noted that the specific embodiments described herein are merely examples of the present invention, and are not intended to limit the implementation methods of the present invention. A person skilled in the art of the present invention may make various modifications or supplements to the specific embodiments described, or replace them in a similar manner. It is not necessary and impossible to provide all examples of all implementation methods here. However, these obvious changes or modifications derived from the essential spirit of the present invention still fall within the scope of protection of the present invention, and interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A dyeing and finishing process for an environmentally friendly cool fabric, characterized in that: The dyeing and finishing process comprises the following steps: (1) Boiling cloth: Place the fabric in a dye vat, add scouring agent, heavy degreasing agent, alkali agent and bleaching agent to react, then drain the liquid, and then add acid solution to adjust the pH to 6-7.5; (2) Dyeing and washing: Add natural auxiliaries, then add acid solution to adjust the pH to 4.5-5, then add disperse dyes and leveling agents to dye and wash the fabric, and perform reduction cleaning; (3) Cotton dyeing: adding polishing enzyme, optimizer, reactive dye, Na2SO4 and Na2CO3 to dye the fabric; (4) Post-treatment: acid washing, soap washing and water washing of the fabric; (5) Fixing and softening: Add fixing agent and softening agent to fix and soften the fabric, and add acid solution to adjust the pH to 6-7.5; (6) Finishing: dehydrating, opening, drying, finishing and shaping the fabric; The natural auxiliary agent is polyaspartic acid and / or sodium gluconate, and the concentration of the natural auxiliary agent in the dye bath is 0.5-2.0 g / L; The optimizer includes: 0.1-0.5% OWF EDTA, 0.5-2% OWF mannitol, 0.2-1% OWF glycine, and 0.1-0.5% OWF L-histidine; The shaping and finishing step includes finishing the fabric with a finishing agent, wherein the finishing agent is an ice-sensing silicone oil finishing agent, and the concentration of the finishing agent in the dye bath is 60-90 g / L.

2. The dyeing and finishing process of an environmentally friendly cool fabric according to claim 1, characterized in that: The dyeing and washing comprises the following steps: adding natural auxiliary agent to 30-50°C water to make the concentration of the natural auxiliary agent in the dye bath be 0.5-2.0 g / L, then adding acid solution to adjust the pH to 4.5-5; then adding disperse dye and leveling agent to make the concentration of the natural auxiliary agent in the dye bath be 0.5-1.0 g / L; heating to 60-70°C after running for 3-5 minutes, then heating to 70-80°C at a rate of 2-5°C / min, then heating to 120-140°C at a rate of 1-1.5°C / min and keeping the temperature for 45-60 minutes, and finally performing reduction washing.

3. The dyeing and finishing process of an environmentally friendly cool fabric according to claim 2, characterized in that: The disperse dyes include 0.30-0.35% OWF yellow-brown WF-XF, 0.01-0.05% OWF ruby ​​WF-XF, and 0.2-0.4% OWF zhiqing WF-XF.

4. The dyeing and finishing process of an environmentally friendly cool fabric according to claim 1, characterized in that: The cotton dyeing method comprises the following steps: adding polishing enzyme to water at 30-50°C to make its concentration in the dye bath 0.1-1.0 g / L, and adding 0.9-4.0% OWF optimizer and running for 20-30 min; adding reactive dye and running for 10-20 min; adding Na2SO4 to make its concentration in the dye bath 50-70 g / L; adding Na2CO3 to make its concentration in the dye bath 10-30 g / L; then heating to 60-70°C at a rate of 0.1-1.0°C / min, keeping the temperature for 60-90 min, and then draining.

5. The dyeing and finishing process of an environmentally friendly cool fabric according to claim 4, characterized in that: The reactive dyes include: 0.80-1.0% OWF yellow K-3RS, 0.40-0.45% OWF red K-3BS, and 1.35-1.40% OWF cyan K-BF; Add Na2SO4 twice, the specific operation is: first add 45~55wt% Na2SO4 and run for 20~30min, then add the remaining Na2SO4 and run for 20~30min; Na2CO3 was added in batches. The specific operation was as follows: first, 10~15wt% Na2CO3 was added and run for 20~30min, then 20~25wt% Na2CO3 was added and run for 20~30min, then 30~35wt% Na2CO3 was added and run for 10~20min, and then the remaining Na2CO3 was added and run for 10~30min.

6. The dyeing and finishing process of an environmentally friendly cool fabric according to claim 1, characterized in that: The shaping and finishing step comprises the following steps: dehydrating, opening the width, and drying the fabric, then immersing the fabric in a finishing agent for padding, and then sending the fabric into a shaping machine for shaping.

7. The dyeing and finishing process of an environmentally friendly cool fabric according to claim 6, characterized in that: The bath ratio during the padding is 1:25-35, and the setting temperature is 140-160°C.

8. The dyeing and finishing process of an environmentally friendly cool fabric according to claim 1, characterized in that: The cloth boiling comprises the following steps: placing the fabric in a dye vat, adding a scouring agent to make the concentration of the fabric in the dye bath to be 0.5-1.0 g / L, adding a heavy degreasing agent to make the concentration of the fabric in the dye bath to be 0.5-1.0 g / L, adding an alkali agent to make the concentration of the fabric in the dye bath to be 1.0-1.5 g / L, and adding a bleaching agent to make the concentration of the fabric in the dye bath to be 1-5 g / L, with a bath ratio of 1:15-20; heating the fabric to 90-95° C., keeping the temperature for 45-60 minutes, then cooling the temperature to 60-70° C., draining the fabric, and then adding an acid solution to adjust the pH to 6-7.5; The post-treatment comprises the following steps: water inlet, adding 1-5% OWF acid solution, running for 5-10 minutes and then draining; water inlet, adding soaping agent so that its concentration in the dye bath is 1-5g / L, heating to 95°C and keeping it for 15-30 minutes, then cooling to 60-70°C and draining; water inlet, adding soaping agent so that its concentration in the dye bath is 1-5g / L, heating to 95°C and keeping it for 15-30 minutes, then cooling to 60-70°C and draining; water inlet, heating to 75-85°C and keeping it for 10-30 minutes, then cooling to 60-70°C and draining; The color fixing and softening process comprises the following steps: adding water, adding a color fixing agent to make its concentration in the dye bath be 1-5 g / L, adding a softening agent to make its concentration in the dye bath be 3-8 g / L, adding an acid solution to adjust the pH to 6-7.5, and discharging the liquid out of the tank after running for 10-30 minutes.

9. A production process for environmentally friendly cool fabrics, characterized in that: The production process includes the dyeing and finishing process of an environmentally friendly cool fabric as described in claims 1 to 8.

10. An environmentally friendly cool fabric, characterized in that: Produced by the production process as claimed in claim 9.

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