Process for the preparation of anti-viral pure cotton dyed cloth

Abstract

This invention discloses a method for preparing antiviral pure cotton dyed fabric, belonging to the field of textile functional finishing technology. The method includes the following steps: subjecting pure cotton greige fabric to a specific pretreatment to obtain a semi-finished fabric; applying a working solution containing antiviral reagents and dyes to the semi-finished fabric, treating it at a temperature of 55-65℃, and then washing and stretching to obtain the antiviral pure cotton dyed fabric. This invention allows for simultaneous antiviral treatment and dyeing, resulting in high processing efficiency, energy saving, cost reduction, and low-carbon environmental friendliness.

Description

Technical Field

[0001] This invention belongs to the field of functional finishing technology of textiles, and specifically relates to a method for preparing antiviral pure cotton dyed fabric. Background Technology

[0002] Pure cotton textiles are widely used due to their excellent comfort, but natural cotton fibers lack antiviral properties. In the field of functional finishing of textiles, antibacterial and antiviral chemical auxiliaries, such as organic quaternary ammonium salt antiviral agents, are typically applied to pure cotton fabrics during the stretching process. The general process involves adding the antiviral agent to the padding trough, padding with a solution containing the antiviral auxiliaries, achieving a padding rate of approximately 70%, and then entering a drying chamber at 160℃ after passing through the padding trough and rollers for drying and setting.

[0003] The above process is relatively simple. However, after the water evaporates, the antibacterial and antiviral agents only mechanically adhere to the surface of the fibers or yarns. When the fabric is washed, most of the antiviral agents will return to the aqueous solution, causing the fabric to lose its antibacterial and antiviral functions. Therefore, its antiviral effect is not durable and it is relatively not washable. Summary of the Invention

[0004] In view of this, the present invention provides a method for preparing antiviral pure cotton dyed fabric. The present invention can obtain cotton textile products with significant and long-lasting antiviral effects, and the method is low-carbon and environmentally friendly, which is conducive to the large-scale production and application of functional textiles.

[0005] This invention provides a method for preparing antiviral pure cotton dyed fabric, comprising the following steps:

[0006] The pure cotton fabric is subjected to alkali-oxygen cold desizing, pre-forming and weft straightening, mercerizing and polishing in sequence to obtain a semi-finished fabric.

[0007] The semi-finished fabric is treated with a working solution containing antiviral reagents and dyes at a temperature of 55-65°C, and then sequentially washed with water, softened with a softener, and stretched and set to obtain an antiviral pure cotton dyed fabric.

[0008] The working solution contains 0.01~5 g / L of antiviral reagent, 0.04~20 g / L of alkaline auxiliaries, dye, and water; the antiviral reagent is one or more of copper nitrate, copper chloride, copper hydroxide, zinc chloride, zinc sulfate, and zinc hydroxide.

[0009] In some embodiments, the alkaline-oxygen cold stacking desizing uses a desizing solution and is carried out at a temperature of 25-35°C; the desizing solution contains 28-32 g / L sodium hydroxide, 14-16 g / L hydrogen peroxide, a chelating agent, and water; the chelating agent is a malachite copolymer.

[0010] In some embodiments, the pre-forming weft alignment is performed using a weft alignment and stretching equipment at a temperature of 150~205℃ and a speed of 58~77 meters / minute.

[0011] In some embodiments, the polishing is performed by treating the fabric with a polishing enzyme at 0.05-3% of its weight.

[0012] In some embodiments, the working fluid further comprises 0.01~1 g / L of a first penetrant; the first penetrant is an anionic penetrant and / or a nonionic penetrant;

[0013] The alkaline additive is one or more of sodium hydroxide, potassium hydroxide, sodium bicarbonate, ammonium bicarbonate, ammonium carbonate, ammonia, sodium phosphate, and sodium carbonate.

[0014] In some embodiments, the semi-finished fabric is impregnated in a working solution containing antiviral reagents and dyes, and then kept at 55-65°C for 55-60 minutes.

[0015] In some embodiments, the washing includes: washing the heat-insulated fabric with water at 25-35°C for 5-15 minutes, and then washing it with water at 55-90°C for 15-25 minutes.

[0016] In some embodiments, the stretching and setting temperature is 150~160°C, and the time is 0.5-1.5 minutes.

[0017] This invention pioneers an antiviral finishing process for pure cotton fabrics. The process involves first performing a specific pretreatment on the pure cotton greige fabric, then applying a working solution containing specific antiviral reagents and dyes to the semi-finished fabric. The fabric is then treated at 55-65℃, followed by washing, application of a softener, and stretching and setting to obtain a pure cotton dyed fabric with antiviral properties. After alkaline-oxygen cold desizing and mercerizing, the antiviral reagents selected in this invention not only bind firmly to the cellulose fibers of the semi-finished fabric, facilitating excellent antiviral effects, but are also safer for human use. Simultaneously, this method involves simultaneous dyeing, resulting in high processing efficiency, energy savings, cost reduction, and low-carbon environmental friendliness. Experiments show that after 50 household washes, the obtained pure cotton dyed fabric exhibits a 98.93% anti-H1N1 virus effect, demonstrating significant antiviral efficacy and wash resistance. Detailed Implementation

[0018] The technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0019] This invention provides a method for preparing antiviral pure cotton dyed fabric, comprising the following steps:

[0020] The pure cotton fabric is subjected to alkali-oxygen cold desizing, pre-forming and weft straightening, mercerizing and polishing in sequence to obtain a semi-finished fabric.

[0021] The semi-finished fabric is treated with a working solution containing antiviral reagents and dyes at a temperature of 55-65°C, and then sequentially washed with water, softened with a softener, and stretched and set to obtain an antiviral pure cotton dyed fabric.

[0022] The working solution contains 0.01~5 g / L of antiviral reagent, 0.04~20 g / L of alkaline auxiliaries, dye, and water; the antiviral reagent is one or more of copper nitrate, copper chloride, copper hydroxide, zinc chloride, zinc sulfate, and zinc hydroxide.

[0023] This invention can produce cotton textile products with significant and lasting antiviral effects, and the method is low-carbon and environmentally friendly, which is conducive to the large-scale production and application of functional textiles.

[0024] In a preferred embodiment of the present invention, pure cotton greige fabric is sequentially subjected to alkali-oxygen cold desizing, pre-setting and weft straightening, mercerizing, and polishing to obtain a semi-finished fabric for subsequent dyeing and antiviral processes. Specifically, the overall process flow of the present invention can be represented as follows: alkali-oxygen cold desizing - pre-setting and weft straightening - mercerizing - polishing - antiviral dyeing in the same bath - cold water washing - hot water washing - softening - stretching and setting.

[0025] The pretreatment process in this embodiment of the invention includes desizing of pure cotton fabric. The desizing is preferably performed using an alkaline oxygen cold piling method, employing an alkaline desizing solution containing hydrogen peroxide. This embodiment of the invention does not impose any special restrictions on the specifications of the pure cotton fabric. The yarn count of both warp and weft yarns is preferably in the range of 24-40S, the warp density can be 72-128 yarns / 10cm, and the weft density can be 60-70 yarns / 10cm; for example: pure cotton 24*24 72*60; pure cotton 28*28 92*70; pure cotton 40*40 128*70. The desizing solution generally contains sodium hydroxide, hydrogen peroxide, a chelating agent, a penetrant for desizing, a dispersant for desizing, and water. The specific formulation is shown in the table below. The alkaline-oxygen cold stacking method for desizing typically involves rolling and stacking the fabric at room temperature (25-35℃) for 12-24 hours to thoroughly remove some impurities, starch, polyvinyl alcohol, and other sizing agents from the cotton fabric, creating favorable conditions for subsequent dyeing and other processes.

[0026] Table 1 shows the desizing solution formulations for desizing in some examples of alkaline oxygen cold reactors.

[0027]

[0028] Because the desizing solution contains strong alkali, the desizing penetrant used is a strong alkali-resistant penetrant, including but not limited to: penetrants such as sulfated castor oil, sodium alkyl sulfonate, sodium alkylbenzene sulfonate, sodium alkyl sulfate, sodium secondary alkyl sulfonate, sodium secondary alkyl sulfate, sodium alkenyl sulfonate, sodium alkylnaphthalene sulfonate, sodium alkyl succinate sulfonate, tryptophan T, sodium aminosulfonate, fatty alcohol polyoxyethylene ether (such as AEO), alkylphenol polyoxyethylene ether, polyethers, phosphate esters, as well as alcohols, ketones, ethers, etc. Specifically, the strong alkali-resistant penetrant can be a non-ionic penetrant, such as penetrant JFC, or specifically penetrant AP (Zhejiang Liansheng New Material Co., Ltd., industrial grade), and penetrant accelerator KF-803N (Qingdao Aoluosi New Material Co., Ltd., industrial grade).

[0029] The chelating agent described is an auxiliary agent that can react with heavy metals, reconstruct their chemical composition, and promote stability; it is primarily a metal ion chelating agent. Most chelating agents are organic ligands, and their basic principle is to bind metal ions, reconstructing their core structure and chemical composition. Here, they are mainly used to remove metal ions from industrial water. Metal ions such as Fe... 2+ Such substances lower the activation energy of hydrogen peroxide decomposition, thereby accelerating the decomposition rate and reducing its stability. They also catalyze the decomposition of hydrogen peroxide, causing oxidation and holes in the fabric, damaging the greige fabric, and reducing the strength of textiles. Therefore, when using hydrogen peroxide in industrial water, it is essential to add a metal ion chelating agent to prevent the influence of metal ions in the water on the hydrogen peroxide. The amount added should be determined based on the water quality and the chelating value of the chelating agent. Specifically, the chelating agent can be a strong metal ion scavenger, TX-908 (Yantai Yuanming Textile Technology Co., Ltd., industrial grade).

[0030] Furthermore, the desizing penetrant is preferably a propylene copolymer, which mainly disperses insoluble substances.

[0031] After desizing, the pre-formed weft straightening process is carried out using a weft straightening and setting tenter frame; the speed of the tenter frame can be set to (60-75) ±2 meters / minute, with all air pressure turned on and the fan frequency at 40HZ-50HZ; the weft straightening and setting tenter frame includes a weft straightener and multiple drying chambers, and the specific temperature parameters are set as shown in the table below.

[0032] Table 2. Pre-defined weft alignment temperature parameters for some embodiments.

[0033]

[0034] This invention also includes mercerizing and polishing cotton fabrics to obtain semi-finished fabrics. Mercerizing is a process where cotton fabrics are treated with concentrated caustic soda and then subjected to tension to produce a silky luster; the luster, dimensional stability, and adsorption properties of the treated fabrics are significantly improved. Mercerizing alters the morphology of cotton fibers, reducing crystallinity and increasing the amorphous regions, while simultaneously enhancing dye adsorption rate and chemical reactivity, thereby allowing antibacterial agents to penetrate into the loosely arranged amorphous regions. Example mercerizing process conditions include: sodium hydroxide concentration of 250-300 g / L, machine speed of 100 m / min, temperature of room temperature (25-35℃), and treatment time of 50-60 s. Furthermore, the polishing generally utilizes cellulase for biopolishing of cotton fabrics, which improves the appearance, feel, and softness of the fabrics. Preferably, this invention uses a polishing enzyme at 0.05-3% (e.g., 0.1-0.15%) of the fabric weight for polishing treatment. The polishing enzymes mentioned are generally commercially available products, such as hair-eating enzyme 3001 (Qingdao Aoluos New Materials Co., Ltd., industrial grade, light brown liquid, odorless), with a density of 1.01 g / cm³. 3 Boiling point > 200℃, flash point > 100℃ (closed cup test method), pH value of 1% solution is 6-7, easily soluble in water; specifically, the polishing temperature can be 40-50℃, the time is 20-120min, and the pH value is 6-7.

[0035] After obtaining the semi-finished pure cotton fabric, this embodiment of the invention immerses it in a working solution containing antiviral reagent and dye, and holds it at 55-65°C for 55-60 minutes. This is an antiviral dyeing process performed in the same bath. The working solution preferably comprises: 0.01-5 g / L of antiviral reagent; 0.04-20 g / L of alkaline auxiliaries; 0.01-1 g / L of a first penetrant; dye; and water.

[0036] The antiviral reagent is one or a mixture of copper nitrate, copper chloride, copper hydroxide, zinc chloride, zinc sulfate, and zinc hydroxide, and may further be copper nitrate, copper chloride, or copper hydroxide. Based on the antiviral reagent of this invention, the use of antibiotics can be reduced, viruses will not develop drug resistance, and it is safer for the human body. The content of the antiviral reagent can be 0.1~4 g / L, or 0.5~3 g / L.

[0037] The alkaline adjuvant can be one or a mixture of several of sodium hydroxide, potassium hydroxide, sodium bicarbonate, ammonium bicarbonate, ammonium carbonate, ammonia, sodium phosphate, and sodium carbonate. Its content can be 0.5~15 g / L, 1~10 g / L, 2~9 g / L, 3~6 g / L, etc. The first penetrant mainly refers to anionic or nonionic penetrants, such as: sodium alkyl sulfonate, sodium alkylbenzene sulfonate, sodium alkyl sulfate, sodium secondary alkyl sulfonate, sodium secondary alkyl sulfate, sodium α-alkenyl sulfonate, sodium alkylnaphthalene sulfonate, sodium alkyl succinate sulfonate, tryptophan T, sodium aminosulfonate, fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether, polyether, phosphate ester compounds, as well as alcohol compounds, ketones, ethers, etc. In some embodiments, the working solution includes: 1-2 g / L of antiviral reagent; 5-6 g / L of alkaline adjuvant.

[0038] The dyes used are generally azo dyes, and their content can be selected within the range of 0.01-5% to obtain different shades of color. The bath ratio of the working solution to the fabric is in the range of 1:7-1:13 (g / L). Both the antiviral reagent and the dye described in this embodiment of the invention can react with the hydroxyl groups on the surface of cellulose, thereby achieving dyeing and simultaneously acquiring antiviral function. In this embodiment of the invention, the treatment is carried out at a temperature of 55-65℃ for 55-60 minutes. This simultaneous bath treatment is more efficient, saves energy, reduces costs, and produces better product quality.

[0039] In this embodiment of the invention, the fabric treated with the same bath heat preservation method is first washed with cold water (25-35℃) for 5-15 minutes, and then washed with hot water (55-90℃, preferably 83-87℃) for 15-25 minutes. Afterwards, a softener is applied and the fabric is stretched and set to obtain the finished dyed fabric. The softener can be a modified organosilicon type silicone oil softener; it can also be a fatty amide soft film softener or a polyethylene wax smoothing softener. The main processing steps are: padding followed by drying at 100℃. The stretching and setting temperature can be 150-160℃ for 0.5-1.5 minutes.

[0040] Tests showed that the antiviral pure cotton dyed fabric obtained could achieve an anti-H1N1 virus effect of 98.93% after 50 household washes, demonstrating significant antiviral effects, long-lasting function, and water resistance.

[0041] To better understand the technical content of this invention, specific embodiments are provided below to further illustrate the invention. The materials used in the embodiments of this invention are commercially available; wherein, the specifications of the pure cotton fabric are 40*40 x 128*70 mm.

[0042] Example 1

[0043] Processing flow: Alkali-oxygen room temperature stacking for 16 hours - pre-forming and weft straightening (see Table 2 for process) - mercerizing - polishing (0.1% polishing enzyme), antiviral dyeing in the same bath (immersion in working solution, keep warm at 60℃ for 60 min) - cold water washing for 10 minutes - hot water (85℃) washing for 20 minutes - adding softener - stretching and setting (160℃*1 min).

[0044] The desizing solution was prepared according to Table 3; the penetrant used for desizing was AEO, and the chelating agent was TX-908, a powerful metal ion scavenger.

[0045] Table 3 Desizing solution formulation for Example 1

[0046]

[0047] In mercerizing, the sodium hydroxide concentration was 280 g / L, the machine speed was 100 m / min, the temperature was room temperature (25-35℃), and the treatment time was 55 s. Polishing was performed using polishing enzyme (hair-abrasive enzyme 3001, Qingdao Aoluosi New Materials Co., Ltd., industrial grade), with a dosage of 0.15% of the fabric weight; the temperature was 45℃, the time was 60 min, and the pH value was 6-7.

[0048] After polishing, a semi-finished fabric is obtained and directly immersed in a working solution containing antiviral agents and dyes for processing, with a dyeing bath ratio of 1:10. The formula of the working solution containing antiviral agents and dyes includes: 1-2 g / L of antiviral agent; 5-6 g / L of alkaline auxiliaries; 0.01~1 g / L of penetrant; reactive dye (blue, azo type); and water. The antiviral agent is copper hydroxide, the alkaline auxiliaries are ammonium carbonate, the penetrant is AEO, and the dye is the SNE series (Jiangsu Demeco Chemical).

[0049] The softener added after washing is polyethylene wax, with a dosage ratio of 1-3%. After padding, it is dried at 100℃. The finished dyed fabric is obtained by stretching and setting.

[0050] The antiviral performance of the dyed fabric was tested and found to be 99.54% after 50 household washes, with an antiviral (H1N1) activity rate of 99.54%.

[0051] Test methods: JIS Z2801 and ASTEM E2180 ISO 18184:2019 Textiles Determination of antiviral.

[0052] Example 2

[0053] Processing flow: Alkali-oxygen room temperature stacking for 20 hours - pre-forming and weft straightening (see Table 2 for process) - mercerizing - polishing (0.1% polishing enzyme), antiviral dyeing in the same bath (immersion in working solution, keep warm at 65℃ for 60 min) - cold water washing for 10 minutes - hot water (85℃) washing for 20 minutes - adding softener - stretching and setting (160℃*1 min).

[0054] The desizing solution was prepared according to Table 3.

[0055] Mercerizing, polishing, and co-bath treatment are the same as in Example 1; the finished dyed fabric is obtained by stretching and setting.

[0056] The antiviral performance of the dyed fabric was tested and found to be 99.68% after 50 household washes, with an antiviral (H1N1) activity rate of 99.68%.

[0057] Example 3

[0058] Processing flow: Alkali-oxygen room temperature stacking for 16 hours (roll-off rate 68%), thorough water washing (30℃ cold water wash - 75℃ hot water wash - 30℃ cold water wash) - pre-setting and weft straightening (process see Table 2) - mercerizing - polishing (0.1% polishing enzyme), antiviral dyeing in the same bath (immersion in working solution, keep warm at 60℃ for 60 min) - cold water wash for 10 minutes - hot water (85℃) wash for 20 minutes - add softener - stretching and setting (160℃*1 min).

[0059] The desizing solution was prepared according to Table 3.

[0060] Mercerizing, polishing, and co-bath treatment are the same as in Example 1; the finished dyed fabric is obtained by stretching and setting.

[0061] The antiviral performance of the dyed fabric was tested and found to be 99.47% after 50 household washes, with an antiviral (H1N1) activity rate of 99.47%.

[0062] The difference between Examples 2 and 3 lies in the stacking time: Example 2 was stacked at room temperature with alkali and oxygen for 20 hours, while Example 3 was stacked at room temperature with alkali and oxygen for 16 hours. The longer stacking time resulted in cleaner desizing and better antiviral effects.

[0063] Comparative Example 1:

[0064] Prepare the desizing solution according to the table above, pile it at room temperature for 16 hours, and then perform pre-shaped weft straightening and polishing (0.1% polishing enzyme). The antiviral-staining bath treatment is the same as in Example 1.

[0065] The antiviral performance of the dyed fabric was tested, and the antiviral (H1N1) activity rate was 90.34% after 50 household washes. Comparative Example 1 did not have a mercerizing process, and compared with Example 1, its permeability was reduced, and its antiviral effects were also reduced.

[0066] Table 4 Summary of the comparison of antiviral and other effects of the embodiments

[0067]

[0068] Capillary effect characterization: Tested according to FZT 01071-1999 Test Method for Capillary Effect in Textiles. The specific steps are as follows:

[0069] I. Sampling

[0070] The entire desized fabric is 30cm long.

[0071] II. Testing Methods

[0072] 1. Take one fabric sample from each of the three positions (left, center, and right) of the sample to be measured, in both the warp and weft directions, and mark them accordingly. The fabric sample size is 3*30cm. The sampling point should be at least 15cm away from the edge. The sample taken should not have obvious weft skew or defects.

[0073] 2. Maintain the water temperature inside the container within the range of 27±2℃.

[0074] 3. Adjust the instrument so that the liquid level is at the zero position of the scale, and the smallest scale division is 1mm.

[0075] 4. Fix the fabric sample on the capillary frame, immerse the frame in water, and start timing from the moment the fabric sample is submerged. Measure the rise of the water level on the sample after 1 minute, 5 minutes, and 30 minutes (measure from the liquid surface; if there are uneven measurements, measure the lowest value). Record the data in millimeters (mm).

[0076] 5. Record the average values ​​in the latitude and longitude directions respectively, which are the measured capillary effect results.

[0077] Comparative Example 2:

[0078] Prepare the desizing solution according to the table above, stack it at room temperature for 16 hours, and then proceed with pre-sizing and weft straightening, polishing (0.1% polishing enzyme), cold water washing for 10 minutes, hot water washing (85℃) for 20 minutes, adding softener, and stretching and padding with copper ion antiviral solution for setting (160℃*1min).

[0079] The antiviral performance of the dyed fabric was tested and found to be 92.34% after 50 home washes and 96.34% after 10 home washes.

[0080] Comparative Example 2, which used a tenter frame antiviral finishing process, showed a rapid decrease in antiviral activity rate with increasing number of washes. This indicates that the tenter frame finishing process has poor antiviral effect and wash fastness, and is not wash-resistant.

[0081] Comparative Example 3:

[0082] Prepare the desizing solution according to the table above, pile it at room temperature for 16 hours, and then proceed with pre-sizing, weft straightening, polishing (0.1% polishing enzyme), cold water washing for 10 minutes, hot water (85℃) washing for 20 minutes, adding softener, and stretching and padding with silver ion antiviral solution for setting (160℃*1min).

[0083] The antiviral performance of the dyed fabric was tested. After 50 household washes, the antiviral (H1N1) activity rate was 93.25%. The main difference lies in safety. Copper ions are an essential trace element for the human body, acting as cofactors for enzymes in important physiological processes such as cellular respiration and iron uptake, and can be metabolized by the body. Silver ions, however, are heavy metals and are not metabolized by the body; the WHO and several countries consider silver ions to pose safety concerns. The antiviral activity rate decreased rapidly with increasing washes. This indicates that the antiviral effect of the tenter frame finishing process is poor in terms of wash fastness and is not wash-resistant.

[0084] As can be seen from the above embodiments, under the process method of the present invention, the selected antiviral reagent not only binds firmly to the cellulose fibers of the semi-finished fabric, which is conducive to achieving excellent antiviral effects, but is also safer for the human body. At the same time, the method of the present invention involves simultaneous dyeing, resulting in high processing efficiency, energy saving, cost reduction, low carbon emissions, environmental friendliness, and better product quality.

[0085] The antiviral and other effects summarized in the above embodiments are as follows:

[0086] Table 5 Summary of the comparison of antiviral and other effects of the embodiments

[0087]

[0088] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention. The endpoints and any values ​​of the ranges disclosed herein are not limited to the precise ranges or values; these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of various ranges, the endpoint values ​​of various ranges and individual point values, and individual point values ​​can be combined to obtain one or more new numerical ranges, which should be considered as specifically disclosed herein.

Claims

1. A method for preparing an antiviral pure cotton dyed fabric, characterized in that, Includes the following steps: The pure cotton fabric is subjected to alkali-oxygen cold desizing, pre-forming and weft straightening, mercerizing and polishing in sequence to obtain a semi-finished fabric. The semi-finished fabric is treated with a working solution containing antiviral reagents and dyes at a temperature of 55-65°C, and then sequentially washed with water, softened with a softener, and stretched and set to obtain an antiviral pure cotton dyed fabric. The working solution contains 0.01~5 g / L of antiviral reagent, 0.04~20 g / L of alkaline auxiliaries, dye, and water; the antiviral reagent is one or more of copper nitrate, copper chloride, copper hydroxide, zinc chloride, zinc sulfate, and zinc hydroxide.

2. The preparation method according to claim 1, characterized in that, The deslurry removal process in the alkaline-oxygen cold reactor is carried out using a deslurry solution, which is stacked at a temperature of 25-35℃. The deslurry solution contains 28-32 g / L sodium hydroxide, 14-16 g / L hydrogen peroxide, a chelating agent, and water.

3. The preparation method according to claim 2, characterized in that, The pre-forming weft alignment is carried out using a weft alignment and stretching equipment at a temperature of 150~205℃ and a machine speed of 58~77 meters / minute.

4. The preparation method according to claim 2, characterized in that, The polishing process involves treating the fabric with a polishing enzyme at a concentration of 0.05-3% by weight.

5. The preparation method according to any one of claims 1-4, characterized in that, The working solution further contains 0.01~1 g / L of a first penetrant; the first penetrant is an anionic penetrant and / or a nonionic penetrant; The alkaline additive is one or more of sodium hydroxide, potassium hydroxide, sodium bicarbonate, ammonium bicarbonate, ammonium carbonate, ammonia, sodium phosphate, and sodium carbonate.

6. The preparation method according to claim 5, characterized in that, The semi-finished fabric is immersed in a working solution containing antiviral reagents and dyes, and then kept at 55-65°C for 55-60 minutes.

7. The preparation method according to claim 6, characterized in that, The washing process includes: washing the heat-insulated fabric with water at 25-35℃ for 5-15 minutes, and then washing it with water at 55-90℃ for 15-25 minutes.

8. The preparation method according to any one of claims 1-4, characterized in that, The stretching and setting temperature is 150~160℃, and the time is 0.5-1.5 minutes.

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