Processing method of cool antibacterial pique fabric

By using a finishing solution containing benzophenone polyorganosiloxane emulsion, antibacterial agent and cooling additive in double bead floor fabric, the problem of easy degradation and poor antibacterial performance in traditional double bead floor fabrics is solved, and the fabric is resistant to ultraviolet, antibacterial and cool touch is achieved.

CN119980552APending Publication Date: 2025-05-13肖洪涛
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Patent Information

Application Number
CN202411477462.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-10-22
Publication Date
2025-05-13

AI Technical Summary

Technical Problem

Because traditional double-bead floor fabrics contain spandex, they are easy to degrade in acid and alkali environments, easily brittle in the sun, and have average antibacterial properties.

Method used

The double-bead floor fabric is used to plunge the double-bead floor fabric by using a finishing solution containing benzophenone polyorganosiloxane emulsion, antibacterial agent and cooling additive, and is shaped and organized through drying and baking steps.

Benefits of technology

It provides effective anti-UV function, extends the service life of the fabric; it has the ability to inhibit the growth of bacteria and fungi, and keeps clothes clean and hygienic; it gives the fabric a cool touch by increasing the contact area between the fabric and the air and the combination of the cool aid.

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Abstract

The invention provides a processing method of a cool antibacterial pique fabric, and relates to the technical field of textile fabrics. The processing method of the cool antibacterial double-pique fabric comprises the following steps: S1, weaving 40S * 2 double-yarn cotton and 150D / 48F polyester low stretch yarn into a double-pique fabric; s2, carrying out dyeing processing on the fabric; s3, after treatment; s4, shaping and finishing. An effective anti-ultraviolet function can be provided for the fabric through the benzophenone-containing polysiloxane emulsion. The fabric can prevent ultraviolet rays from hurting human skin, reduce the problems of skin aging, color spots and the like caused by ultraviolet irradiation, and prolong the service life of the fabric. The antibacterial agent is added, so that the fabric has the capability of inhibiting growth of microorganisms such as bacteria and fungi. Therefore, it is very important to keep the clothes clean and sanitary, especially in a hot and humid environment, peculiar smell can be reduced, and the risk of skin infection is reduced.
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Description

Technical Field

[0001] The invention relates to the technical field of textile fabrics, in particular to a method for processing a cool antibacterial double-pearl fabric. Background Art

[0002] Double pique fabric is a textile fabric with a unique appearance and performance. The surface of double pique fabric presents evenly distributed small granular protrusions, just like round beads, hence the name. These beads can be of different sizes and colors, adding a three-dimensional and decorative effect to the fabric.

[0003] At present, double-pique fabrics contain spandex, which makes them easily degraded in acidic and alkaline environments. When double-pique fabrics come into contact with acidic or alkaline substances, the spandex fibers may be destroyed, resulting in reduced elasticity and strength of the fabric, or even damage. At the same time, the antibacterial properties of traditional double-pique fabrics are average. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a method for processing a cool and antibacterial double-pearl fabric, which solves the problem that the traditional double-pearl fabric is not resistant to acid and alkali and is easily brittle in sunlight due to the presence of spandex.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A method for processing a cool antibacterial double-pearl fabric, comprising the following steps:

[0006] S1. Weave 40S*2 double yarn cotton and 150D / 48F polyester low-elastic yarn into double pique fabric;

[0007] S2. Fabrics are dyed;

[0008] S3. Finishing;

[0009] S4. Shaping and finishing.

[0010] Preferably, the steps of shaping and finishing are as follows:

[0011] S4-1 prepare the finishing liquid: mix the benzophenone-containing polyorganosiloxane emulsion, the antibacterial agent and the cooling agent;

[0012] S4-2 performs padding treatment on the fabric;

[0013] S4-3 first dries the fabric at 130°C for 60-80s, and then bakes the fabric at 185-190°C for 40-50s.

[0014] Preferably, the preparation method of the benzophenone-containing polyorganosiloxane emulsion is:

[0015] In a three-necked flask equipped with an electric stirrer, a thermometer, and a reflux condenser, 90 g of octamethylcyclotetrasiloxane, 5 g of benzophenone-containing siloxane, and 2 g of KH 6 0 2 , stirring and mixing evenly, heating to above 90°C; then adding 0.2g of tetramethylammonium hydroxide, and then maintaining the temperature at 120°C for 6 hours, removing low-boiling substances by reduced pressure distillation at a gauge pressure of 0.8MPa, and then heating to 140°C to decompose the catalyst tetramethylammonium hydroxide, and again removing low-boiling substances by reduced pressure distillation at a gauge pressure of 0.8MPa to obtain a colorless, transparent, viscous liquid, i.e., polyorganosiloxane containing benzophenone; the polyorganosiloxane containing benzophenone is mixed with an emulsifier in a mass ratio of 10:1, and a mixture of water and acetic acid is added during stirring, and stirred until the solution becomes transparent to obtain a polyorganosiloxane emulsion containing benzophenone, wherein the emulsifier is composed of isomeric tridecanol polyoxyethylene ether 1307, isomeric tridecanol polyoxyethylene ether 1309, and AEO-9 in a mass ratio of 2:2:1;

[0016] The benzophenone-containing siloxane is prepared by an addition reaction between trimethoxyhydrogensilane and 2-hydroxy-4-propyleneoxybenzophenone, and the specific steps are: adding 28.2g of 2-hydroxy-4-propyleneoxybenzophenone, 80g of toluene and 0.12g of a platinum catalyst into a four-necked round-bottomed flask equipped with a mechanical stirrer, a reflux condenser, a constant pressure dropping funnel and a nitrogen gas guide tube, heating to 85°C and refluxing for 30min under a nitrogen atmosphere; weighing 14.7g of trimethoxyhydrogensilane and 10g of toluene, fully mixing, adding the mixture into the four-necked flask within 2h using a constant pressure dropping funnel, then heating to 100°C and keeping the mixture warm for 6h, cooling, and distilling unreacted monomers under reduced pressure at a pressure of 0.01MPa, and the discharged material is the benzophenone-containing siloxane.

[0017] Preferably, the step S2 specifically includes the fabric pre-forming, singeing, scouring, dyeing, cotton dyeing, post-finishing and finishing processes.

[0018] Preferably, the specific steps of the scouring are as follows:

[0019] First, dissolve the scouring agent, caustic soda, and 50% hydrogen peroxide in water to prepare a scouring solution. The concentration of the scouring agent is 2g / L, the concentration of caustic soda is 2g / L, and the concentration of hydrogen peroxide is 3g / L. Immerse the fabric in the scouring solution according to a bath ratio of 1:6 and treat it at 110℃ for 40min.

[0020] Preferably, the specific steps of dyeing and washing are as follows:

[0021] First, add high-temperature leveling agent, sodium acetate and glacial acetic acid into the dye bath at room temperature. The fabric is treated in the dye bath for 5 minutes, and then disperse dye is added. The dye solution is circulated through a circulation pump for 10 minutes, and then the temperature is raised to 85°C. After keeping warm for 10 minutes, the temperature is raised to 90°C, and then kept warm for 10 minutes. After the temperature is raised to 130°C, it is kept warm for another 45 minutes and then cooled to 50°C. After removing the dye solution, the fabric is washed.

[0022] Preferably, the specific steps of dyeing cotton are as follows:

[0023] First, add dye and industrial salt into the dye bath at room temperature. After the fabric is treated in the dye bath for 15 minutes, heat it to 60℃, keep it warm for 10 minutes, then add soda ash, keep it warm for 45 minutes and then cool it down to 50℃. After draining the liquid, wash the fabric with water and then with soap, and then rinse it with clean water before taking it out of the tank.

[0024] The present invention provides a method for processing a cool antibacterial double-pearl fabric. It has the following beneficial effects:

[0025] 1. The present invention can provide effective anti-ultraviolet function for fabrics by containing benzophenone polyorganosiloxane emulsion. It can block the damage of ultraviolet rays to human skin, reduce the problems of skin aging and spots caused by ultraviolet radiation, and at the same time extend the service life of fabrics. The addition of antibacterial agent enables the fabric to inhibit the growth of microorganisms such as bacteria and fungi. This is very important for keeping clothes clean and hygienic, especially in hot and humid environments, it can reduce the generation of odor and reduce the risk of skin infection. First, the surface of the double-beaded fabric has evenly distributed small bead-shaped protrusions. This structure increases the contact area between the fabric and the air. The air flows between the beads and can take away the heat from the skin surface, thereby producing a cool feeling; this special structure combined with the cool feeling auxiliary agent can give the fabric a cool touch, which can bring a comfortable feeling to the human body in hot weather, and make the wearer feel more refreshed by absorbing the heat of the human body and quickly dissipating it. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below. 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.

[0027] Embodiment 1:

[0028] The embodiment of the present invention provides a method for processing a cool antibacterial double-pearl fabric, comprising the following steps:

[0029] S1. Weave 40S*2 double yarn cotton and 150D / 48F polyester low-elastic yarn into double pique fabric;

[0030] S2. Fabrics are dyed;

[0031] S3. Finishing;

[0032] S4. Shaping and finishing.

[0033] The specific steps of finalizing are as follows:

[0034] S4-1 prepare the finishing liquid: mix the benzophenone-containing polyorganosiloxane emulsion, the antibacterial agent and the cooling agent;

[0035] S4-2 performs padding treatment on the fabric;

[0036] S4-3 first dried the fabric at 130℃ for 60s, and then baked it at 185℃ for 40s. Benzophenone-containing polyorganosiloxane emulsion can provide effective anti-ultraviolet function for fabrics. It can block the damage of ultraviolet rays to human skin, reduce skin aging, spots and other problems caused by ultraviolet radiation, and also extend the service life of fabrics. The addition of antibacterial agents enables fabrics to inhibit the growth of microorganisms such as bacteria and fungi. This is very important for keeping clothes clean and hygienic, especially in hot and humid environments, it can reduce odor and reduce the risk of skin infection. First of all, the surface of the double-beaded fabric has evenly distributed small bead-like protrusions. This structure increases the contact area between the fabric and the air. The air flows between the beads and can take away the heat from the skin surface, thus producing a cool feeling; this special structure combined with the cooling agent can give the fabric a cool touch, which can bring comfort to the human body in hot weather, and make the wearer feel more refreshed by absorbing the heat of the human body and dissipating it quickly.

[0037] The preparation method of the benzophenone-containing polyorganosiloxane emulsion is as follows:

[0038] In a three-necked flask equipped with an electric stirrer, a thermometer, and a reflux condenser, 90 g of octamethylcyclotetrasiloxane, 5 g of benzophenone-containing siloxane, and 2 g of KH 6 0 2, stirring and mixing evenly, heating to above 90°C; then adding 0.2g of tetramethylammonium hydroxide, and then maintaining the temperature at 120°C for 6 hours, removing low-boiling substances by reduced pressure distillation at a gauge pressure of 0.8MPa, and then heating to 140°C to decompose the catalyst tetramethylammonium hydroxide, and again removing low-boiling substances by reduced pressure distillation at a gauge pressure of 0.8MPa to obtain a colorless, transparent, viscous liquid, i.e., polyorganosiloxane containing benzophenone; the polyorganosiloxane containing benzophenone is mixed with an emulsifier in a mass ratio of 10:1, and a mixture of water and acetic acid is added during stirring, and stirred until the solution becomes transparent to obtain a polyorganosiloxane emulsion containing benzophenone, wherein the emulsifier is composed of isomeric tridecanol polyoxyethylene ether 1307, isomeric tridecanol polyoxyethylene ether 1309, and AEO-9 in a mass ratio of 2:2:1;

[0039] The benzophenone-containing siloxane is prepared by an addition reaction of trimethoxyhydrogensilane and 2-hydroxy-4-propyleneoxybenzophenone, and the specific steps are as follows: 28.2 g of 2-hydroxy-4-propyleneoxybenzophenone, 80 g of toluene and 0.12 g of a platinum catalyst are added into a four-necked round-bottomed flask equipped with a mechanical stirrer, a reflux condenser, a constant pressure dropping funnel and a nitrogen gas guide tube, and the temperature is raised to 85° C. and refluxed for 30 minutes under a nitrogen atmosphere; 14.7 g of trimethoxyhydrogensilane and 10 g of toluene are weighed, and after being fully mixed, the mixture is added into the four-necked flask within 2 hours using a constant pressure dropping funnel, and then the temperature is raised to 100° C. and kept warm for 6 hours. After cooling, unreacted monomers are distilled under reduced pressure at a pressure of 0.01 MPa, and the discharged material is the benzophenone-containing siloxane.

[0040] The S2 step specifically includes the fabric pre-setting, singeing, scouring, dyeing, cotton dyeing, finishing and finishing processes.

[0041] The specific steps of refining are as follows:

[0042] First, dissolve the scouring agent, caustic soda, and 50% hydrogen peroxide in water to prepare a scouring solution. The concentration of the scouring agent is 2g / L, the concentration of caustic soda is 2g / L, and the concentration of hydrogen peroxide is 3g / L. Immerse the fabric in the scouring solution according to a bath ratio of 1:6 and treat it at 110℃ for 40min.

[0043] The specific steps of dyeing and washing are as follows:

[0044] First, add high-temperature leveling agent, sodium acetate and glacial acetic acid into the dye bath at room temperature. The fabric is treated in the dye bath for 5 minutes, and then disperse dye is added. The dye solution is circulated through a circulation pump for 10 minutes, and then the temperature is raised to 85°C. After keeping warm for 10 minutes, the temperature is raised to 90°C, and then kept warm for 10 minutes. After the temperature is raised to 130°C, it is kept warm for another 45 minutes and then cooled to 50°C. After removing the dye solution, the fabric is washed.

[0045] The specific steps of dyeing cotton are as follows:

[0046] First, add dye and industrial salt into the dye bath at room temperature. After the fabric is treated in the dye bath for 15 minutes, heat it to 60℃, keep it warm for 10 minutes, then add soda ash, keep it warm for 45 minutes and then cool it down to 50℃. After draining the liquid, wash the fabric with water and then with soap, and then rinse it with clean water before taking it out of the tank.

[0047] Embodiment 2:

[0048] The embodiment of the present invention provides a method for processing a cool antibacterial double-pearl fabric, comprising the following steps:

[0049] S1. Weave 40S*2 double yarn cotton and 150D / 48F polyester low-elastic yarn into double pique fabric;

[0050] S2. Fabrics are dyed;

[0051] S3. Finishing;

[0052] S4. Shaping and finishing.

[0053] The specific steps of finalizing are as follows:

[0054] S4-1 prepare the finishing liquid: mix the benzophenone-containing polyorganosiloxane emulsion, the antibacterial agent and the cooling agent;

[0055] S4-2 performs padding treatment on the fabric;

[0056] S4-3 first dried the fabric at 130℃ for 80s, and then baked it at 190℃ for 50s. Benzophenone-containing polyorganosiloxane emulsion can provide effective anti-ultraviolet function for fabrics. It can block the damage of ultraviolet rays to human skin, reduce skin aging, spots and other problems caused by ultraviolet radiation, and also extend the service life of fabrics. The addition of antibacterial agents enables fabrics to inhibit the growth of microorganisms such as bacteria and fungi. This is very important for keeping clothes clean and hygienic, especially in hot and humid environments, it can reduce odor and reduce the risk of skin infection. First of all, the surface of the double-beaded fabric has evenly distributed small bead-like protrusions. This structure increases the contact area between the fabric and the air. The air flows between the beads and can take away the heat from the skin surface, thus producing a cool feeling; this special structure combined with the cooling agent can give the fabric a cool touch, which can bring comfort to the human body in hot weather, and make the wearer feel more refreshed by absorbing the heat of the human body and dissipating it quickly.

[0057] The preparation method of the benzophenone-containing polyorganosiloxane emulsion is as follows:

[0058] In a three-necked flask equipped with an electric stirrer, a thermometer, and a reflux condenser, 90 g of octamethylcyclotetrasiloxane, 5 g of benzophenone-containing siloxane, and 2 g of KH 6 0 2 , stirring and mixing evenly, heating to above 90°C; then adding 0.2g of tetramethylammonium hydroxide, and then maintaining the temperature at 120°C for 6 hours, removing low-boiling substances by reduced pressure distillation at a gauge pressure of 0.8MPa, and then heating to 140°C to decompose the catalyst tetramethylammonium hydroxide, and again removing low-boiling substances by reduced pressure distillation at a gauge pressure of 0.8MPa to obtain a colorless, transparent, viscous liquid, i.e., polyorganosiloxane containing benzophenone; the polyorganosiloxane containing benzophenone is mixed with an emulsifier in a mass ratio of 10:1, and a mixture of water and acetic acid is added during stirring, and stirred until the solution becomes transparent to obtain a polyorganosiloxane emulsion containing benzophenone, wherein the emulsifier is composed of isomeric tridecanol polyoxyethylene ether 1307, isomeric tridecanol polyoxyethylene ether 1309, and AEO-9 in a mass ratio of 2:2:1;

[0059] The benzophenone-containing siloxane is prepared by an addition reaction of trimethoxyhydrogensilane and 2-hydroxy-4-propyleneoxybenzophenone, and the specific steps are as follows: 28.2 g of 2-hydroxy-4-propyleneoxybenzophenone, 80 g of toluene and 0.12 g of a platinum catalyst are added into a four-necked round-bottomed flask equipped with a mechanical stirrer, a reflux condenser, a constant pressure dropping funnel and a nitrogen gas guide tube, and the temperature is raised to 85° C. and refluxed for 30 minutes under a nitrogen atmosphere; 14.7 g of trimethoxyhydrogensilane and 10 g of toluene are weighed, and after being fully mixed, the mixture is added into the four-necked flask within 2 hours using a constant pressure dropping funnel, and then the temperature is raised to 100° C. and kept warm for 6 hours. After cooling, unreacted monomers are distilled under reduced pressure at a pressure of 0.01 MPa, and the discharged material is the benzophenone-containing siloxane.

[0060] The S2 step specifically includes the fabric pre-setting, singeing, scouring, dyeing, cotton dyeing, finishing and finishing processes.

[0061] The specific steps of refining are as follows:

[0062] First, dissolve the scouring agent, caustic soda, and 50% hydrogen peroxide in water to prepare a scouring solution. The concentration of the scouring agent is 2g / L, the concentration of caustic soda is 2g / L, and the concentration of hydrogen peroxide is 3g / L. Immerse the fabric in the scouring solution according to a bath ratio of 1:6 and treat it at 110℃ for 40min.

[0063] The specific steps of dyeing and washing are as follows:

[0064] First, add high-temperature leveling agent, sodium acetate and glacial acetic acid into the dye bath at room temperature. The fabric is treated in the dye bath for 5 minutes, and then disperse dye is added. The dye solution is circulated through a circulation pump for 10 minutes, and then the temperature is raised to 85°C. After keeping warm for 10 minutes, the temperature is raised to 90°C, and then kept warm for 10 minutes. After the temperature is raised to 130°C, it is kept warm for another 45 minutes and then cooled to 50°C. After removing the dye solution, the fabric is washed.

[0065] The specific steps of dyeing cotton are as follows:

[0066] First, add dye and industrial salt into the dye bath at room temperature. After the fabric is treated in the dye bath for 15 minutes, heat it to 60°C, keep it warm for 10 minutes, then add soda ash, keep it warm for 45 minutes, then cool it down to 50°C. After draining the liquid, wash the fabric with water and then with soap, and then rinse it with clean water before taking it out of the tank.

[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 method for processing a cool antibacterial double-piqué fabric, characterized in that: The following steps are involved: S1. Weave 40S*2 double yarn cotton and 150D / 48F polyester low-elastic yarn into double pique fabric; S2. Fabrics are dyed; S3. Finishing; S4. Shaping and finishing.

2. The method for processing a cool antibacterial double-piqué fabric according to claim 1, characterized in that: The steps of the finalization are as follows: S4-1 prepare the finishing liquid: mix the benzophenone-containing polyorganosiloxane emulsion, the antibacterial agent and the cooling agent; S4-2 performs padding treatment on the fabric; S4-3 first dries the fabric at 130°C for 60-80s, and then bakes the fabric at 185-190°C for 40-50s.

3. The method for processing a cool antibacterial double-piqué fabric according to claim 2, characterized in that: The preparation method of the benzophenone-containing polyorganosiloxane emulsion is: In a three-necked flask equipped with an electric stirrer, a thermometer, and a reflux condenser, 90 g of octamethylcyclotetrasiloxane, 5 g of benzophenone-containing siloxane, and 2 g of KH602 were added, the mixture was stirred and evenly mixed, and the temperature was raised to above 90° C. Then 0.2 g of tetramethylammonium hydroxide was added, and the temperature was maintained at 120° C. for 6 hours, and low-boiling substances were removed by reduced pressure distillation at a gauge pressure of 0.8 MPa, and then the temperature was raised to 140° C. to decompose the catalyst tetramethylammonium hydroxide, and the mixture was heated again at 0 .8MPa, and removing low-boiling substances by vacuum distillation to obtain a colorless, transparent, viscous liquid, i.e., a benzophenone-containing polyorganosiloxane; mixing the benzophenone-containing polyorganosiloxane with an emulsifier in a mass ratio of 10:1, adding a mixture of water and acetic acid during stirring, and stirring until the solution becomes transparent to obtain a benzophenone-containing polyorganosiloxane emulsion, wherein the emulsifier is composed of isomeric tridecanol polyoxyethylene ether 1307, isomeric tridecanol polyoxyethylene ether 1309, and AEO-9 in a mass ratio of 2:2:1; The benzophenone-containing siloxane is prepared by an addition reaction between trimethoxyhydrogensilane and 2-hydroxy-4-propyleneoxybenzophenone, and the specific steps are: adding 28.2g of 2-hydroxy-4-propyleneoxybenzophenone, 80g of toluene and 0.12g of a platinum catalyst into a four-necked round-bottomed flask equipped with a mechanical stirrer, a reflux condenser, a constant pressure dropping funnel and a nitrogen gas guide tube, heating to 85°C and refluxing for 30min under a nitrogen atmosphere; weighing 14.7g of trimethoxyhydrogensilane and 10g of toluene, fully mixing, adding the mixture into the four-necked flask within 2h using a constant pressure dropping funnel, then heating to 100°C and keeping the mixture warm for 6h, cooling, and distilling unreacted monomers under reduced pressure at a pressure of 0.01MPa, and the discharged material is the benzophenone-containing siloxane.

4. The method for processing a cool antibacterial double-piqué fabric according to claim 1, characterized in that: The step S2 specifically includes the fabric pre-forming, singeing, scouring, dyeing, cotton dyeing, post-finishing and finishing processes.

5. The method for processing a cool antibacterial double-piqué fabric according to claim 4, characterized in that: The specific steps of the scouring are as follows: First, dissolve the scouring agent, caustic soda, and 50% hydrogen peroxide in water to prepare a scouring solution. The concentration of the scouring agent is 2g / L, the concentration of caustic soda is 2g / L, and the concentration of hydrogen peroxide is 3g / L. Immerse the fabric in the scouring solution according to a bath ratio of 1:6 and treat it at 110℃ for 40min.

6. The method for processing a cool antibacterial double-piqué fabric according to claim 4, characterized in that: The specific steps of dyeing and washing are as follows: First, add high-temperature leveling agent, sodium acetate and glacial acetic acid into the dye bath at room temperature. The fabric is treated in the dye bath for 5 minutes, and then disperse dye is added. The dye solution is circulated through a circulation pump for 10 minutes, and then the temperature is raised to 85°C. After keeping warm for 10 minutes, the temperature is raised to 90°C, and then kept warm for 10 minutes. After the temperature is raised to 130°C, it is kept warm for another 45 minutes and then cooled to 50°C. After removing the dye solution, the fabric is washed.

7. The method for processing a cool antibacterial double-piqué fabric according to claim 4, characterized in that: The specific steps of cotton dyeing are as follows: First, add dye and industrial salt into the dye bath at room temperature. After the fabric is treated in the dye bath for 15 minutes, heat it to 60℃, keep it warm for 10 minutes, then add soda ash, keep it warm for 45 minutes and then cool it down to 50℃. After draining the liquid, wash the fabric with water and then with soap, and then rinse it with clean water before taking it out of the tank.