Antibacterial comfortable bamboo-cotton yarn fabric and preparation method thereof

Abstract

The invention relates to an antibacterial comfortable bamboo-cotton yarn fabric and a preparation method, and belongs to the technical field of textile, the antibacterial comfortable bamboo-cotton yarn fabric is formed by interweaving warp yarns and weft yarns, the warp yarns and the weft yarns are blended yarns, the blended yarns are formed by blending 70wt% of raw bamboo fibers and 30wt% of cotton fibers, antibacterial coatings are arranged on the surfaces of the inner side and the outer side of the fabric respectively, and the antibacterial coatings are made of bamboo fibers and cotton fibers. Wherein the antibacterial coating is arranged in a wave shape, meanwhile, the inner side portion of the antibacterial coating is connected with the surface of the fabric in a bonding mode, by arranging the wave-shaped antibacterial coating, the antibacterial coating has high ductility, the antibacterial coating is prevented from cracking, meanwhile, the contact area between the coating and air and the contact area between the coating and the skin are increased through the wave-shaped concave-convex structure, and the antibacterial effect is improved. The antibacterial effect can be more effectively achieved, meanwhile, adhesion and breeding of bacteria can be reduced to a certain degree, the surface of the fabric is softer and higher in elasticity due to the arrangement of the wavy antibacterial coating, and the use experience of a user and the breathability of the fabric are improved.

Description

Technical Field

[0001] This invention relates to the field of textile technology, specifically to an antibacterial and comfortable bamboo cotton yarn fabric and its preparation method. Background Technology

[0002] With the increasing health awareness of people, antibacterial properties, comfort, and washability have become the core requirements for fabrics. Bamboo-cotton blended fabrics, which combine the advantages of bamboo fiber and cotton fiber, have been applied in the textile field. Currently, there are two main ways to perform antibacterial finishing on bamboo-cotton blended fabrics: one is to add antibacterial agents during the fiber spinning stage, and the other is to attach an antibacterial layer to the fabric surface through impregnation, coating, or other methods after the fabric is woven. Specifically, existing planar antibacterial coatings have the following shortcomings: First, the coating has poor extensibility, and the coating is prone to cracking and peeling during the wearing, washing, or stretching of the fabric. This not only affects the sustainability of the antibacterial effect but also reduces the fabric's appearance and lifespan. Second, the planar coating has a limited contact area with air and human skin, which limits the effectiveness of the antibacterial action and makes it difficult to achieve efficient and broad-spectrum antibacterial properties. Third, the full-coverage planar coating can clog the fiber gaps in the fabric, seriously affecting the fabric's breathability and softness, and reducing the user's wearing comfort. Meanwhile, existing preparation processes lack targeted shaping methods, have unreasonable tension control, make it difficult to achieve stable molding of special coatings, result in poor product consistency, and are not conducive to industrial production.

[0003] To address the above issues, an antibacterial and comfortable bamboo cotton yarn fabric and its preparation method are proposed. Summary of the Invention

[0004] The purpose of this invention is to provide an antibacterial and comfortable bamboo cotton yarn fabric and its preparation method. By using this device, the problems mentioned above, such as poor extensibility of the antibacterial coating, limited antibacterial effect, reduced breathability and softness of the fabric, and unfavorable fabric preparation method for industrial production, are solved.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an antibacterial and comfortable bamboo cotton yarn fabric, which is woven from warp and weft yarns, wherein both warp and weft yarns are blended yarns, and the blended yarns are made of 70wt% original bamboo fiber and 30wt% cotton fiber. Antibacterial coatings are respectively provided on the inner and outer surfaces of the fabric. The antibacterial coatings are arranged in a wavy shape, and the inner part of the antibacterial coatings is bonded to the surface of the fabric.

[0006] Furthermore, the antibacterial coating is formed by curing an antibacterial finishing liquid, which comprises the following components by mass percentage: Nano silver antibacterial agent (1000ppm dispersion): 2%-5% Waterborne polyurethane adhesives: 10%-15% Crosslinking agent (isocyanate): 1%-3% Wetting agent: 0.5%-1% Defoamer: 0.1%-0.3% Deionized water: balance (to 100%).

[0007] This invention also discloses another technical solution, a method for preparing an antibacterial and comfortable bamboo cotton yarn fabric, comprising the following steps: S1: Preparation of blended yarn: 70wt% bamboo fiber and 30wt% cotton fiber are opened, mixed, combed, drawn and twisted to make 70 / 30 bamboo-cotton blended yarn. S2: Fabric weaving, using blended yarns as warp and weft yarns, interwoven into plain weave by an air-jet loom, and then pre-treated by desizing, refining, bleaching, etc. to remove impurities and improve the cleanliness and hydrophilicity of the fibers. S3: Antibacterial finishing solution preparation, add the following in order of mass percentage: deionized water, nano silver antibacterial agent, water-based polyurethane adhesive, crosslinking agent, wetting agent and defoamer, and stir thoroughly until a uniform working solution without particles is formed; S4: Impregnation and coating forming. The pre-treated fabric is immersed in antibacterial finishing liquid, and the liquid content is controlled at 60%-70%. It is uniformly rolled by a two-roller press to remove excess liquid. The antibacterial coating on the surface of the fabric is immediately set by a setting device to form a wavy structure. S5: Curing and finishing: Fabric preparation can be completed by pre-baking, baking and cooling the fabric after the antibacterial coating is applied.

[0008] Furthermore, in S3, the specific operating steps for preparing the antibacterial finishing solution are as follows: S301: First, based on the mixing ratio and the total amount of antibacterial finishing liquid required, calculate the required mass of deionized water, nano-silver antibacterial agent, waterborne polyurethane adhesive, crosslinking agent, wetting agent and defoamer, and then use an electronic scale for weighing and calibration. S302: First, add deionized water to the prepared container and stir at a speed of 300r / min-500r / min. Then, add nano silver antibacterial agent and water-based polyurethane adhesive in sequence and stir until completely dispersed. The stirring time is 3-5 minutes. S303: Then add crosslinking agent, wetting agent and defoamer, and stir at a speed of 300r / min-500r / min for 5 minutes-8 minutes until the system is uniform, free of particles and stratification.

[0009] Furthermore, in S4, the specific steps for rolling the fabric after it has been immersed in the antibacterial finishing solution are as follows: S401: The treated fabric is smoothly introduced between the upper and lower rollers of the two-roll rolling mill, so that the fabric is laid out straight, without wrinkles or deviation, and passes through the gap between the rollers. This ensures that the fabric is in full contact with the rollers and is subjected to uniform force. Then the rolling mill is started to perform uniform rolling. S402: During the rolling process, the rolling pressure of the two-roll rolling machine is controlled at 0.2MPa-0.4MPa, and the fabric running speed is kept stable at 20m / min-30m / min, so that the fabric can be rolled under uniform speed and constant pressure. By combining uniform pressure with stable speed, the liquid content of the fabric is kept stable at 60%-70%, avoiding local over-wetness and over-dryness.

[0010] Furthermore, in S4, the specific steps by which the shaping equipment shapes the antibacterial coating into a wavy shape are as follows: S403: The rolled fabric is placed in a setting equipment, and the fabric is squeezed by upper and lower corrugated pressure plates at the same time to squeeze the outer side of the antibacterial coating into a corrugated shape. S404: After pressing the upper and lower wavy pressure plates firmly on the fabric surface, several small arched columns in the shaping equipment are inserted from the side into the protrusions of the antibacterial coating. This creates an arched gap between the protrusions and the fabric, thus shaping the antibacterial coating into a wavy shape. S405: When setting the coating in a wavy shape, control the setting time to 15-30 seconds, and combine it with stable temperature to quickly form a uniform wavy structure for the antibacterial coating without damaging the fabric and antibacterial components.

[0011] Furthermore, in S404, several small arch-shaped columns are provided on both sides of the antibacterial coating. Driven by an electric actuator, the bottom plane of the small arch-shaped columns is set lower than the fabric surface.

[0012] Furthermore, in S5, the specific steps for pre-drying the fabric are as follows: S501: The fabric that has been rolled and coated with a wavy pattern is fed into the pre-drying machine at a uniform speed in a straight, unstretched, and unoffset state, while maintaining low tension during the process. S502: Control the pre-drying temperature to 80℃-100℃ and the pre-drying time to 1-2 minutes to initially dry the fabric, remove excess moisture from the surface, and allow the antibacterial coating to initially set.

[0013] Furthermore, in S5, the specific steps for baking the fabric are as follows: S503: The pre-dried fabric is fed into the baking machine with low tension and straightness; S504: Control the baking temperature to 150℃-155℃, the baking time to 1 minute-2 minutes, and complete the baking at a uniform speed without stretching.

[0014] Furthermore, in S5, the specific steps for cooling the fabric are as follows: S505: The baked fabric is fed into the cooling device at a uniform speed under low tension, no stretching, and while maintaining the integrity of the wavy coating. S506: The fabric is lifted into the cooling device by gripping the upper corners of both ends of the fabric with a clamp. S507: Cooling is achieved by air cooling. Multiple fans are installed on both sides of the fabric to cool both sides simultaneously. The cooling temperature is controlled at 25℃-40℃ and the cooling time is 30-60 seconds, which allows the antibacterial coating to fully cure and set, and the fabric temperature to drop to room temperature.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: By setting a wavy antibacterial coating, not only is the antibacterial coating highly ductile during the stretching process, preventing cracks in the antibacterial coating, but the wavy concave-convex structure also increases the contact area between the coating and the air and skin, enabling it to exert its antibacterial effect more effectively. Furthermore, the wavy antibacterial coating makes the fabric surface softer and more elastic, improving the user experience and the breathability of the fabric. The preparation process proposed in this invention achieves stable molding of wavy coatings, ensures product consistency through low tension control throughout the process, is suitable for large-scale industrial production, and takes into account antibacterial properties, comfort, and production stability, thus meeting the demand for high-quality fabrics. Attached Figure Description

[0016] Figure 1 This is a schematic cross-sectional view of the antibacterial and comfortable bamboo cotton yarn fabric of the present invention; Figure 2 This is a schematic diagram of the antibacterial finishing solution of the present invention according to its components; Figure 3 This is a flowchart illustrating the preparation process of the antibacterial and comfortable bamboo cotton yarn fabric of the present invention. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figure 1 and Figure 2An antibacterial and comfortable bamboo-cotton yarn fabric is made of interwoven warp and weft yarns, both of which are blended yarns. The blended yarns are made of 70wt% bamboo fiber and 30wt% cotton fiber. Antibacterial coatings are applied to both the inner and outer surfaces of the fabric. The antibacterial coatings are wavy, and the inner part of the antibacterial coatings is bonded to the surface of the fabric. This allows the antibacterial coatings to be fixed to both the inner and outer surfaces of the fabric. The wavy antibacterial coatings not only ensure that the antibacterial coatings have strong extensibility during the stretching process, preventing cracks in the antibacterial coatings, but also increase the contact area between the coatings and the air and skin, thus more effectively exerting the antibacterial effect. At the same time, it can also reduce bacterial adhesion and growth to a certain extent. Furthermore, the wavy antibacterial coatings make the fabric surface softer and more elastic, improving the user experience and the breathability of the fabric. The antibacterial coating is formed by curing an antibacterial finishing liquid, which comprises the following components by mass percentage: Nano silver antibacterial agent (1000ppm dispersion): 2%-5% Waterborne polyurethane adhesives: 10%-15% Crosslinking agent (isocyanate): 1%-3% Wetting agent: 0.5%-1% Defoamer: 0.1%-0.3% Deionized water: Balance (to 100%) This antibacterial coating, with nano-silver as its core, can achieve broad-spectrum and highly effective antibacterial action against common pathogens such as Escherichia coli and Staphylococcus aureus. Combined with the cross-linking effect of water-based polyurethane adhesive and crosslinking agent, it can significantly improve wash fastness.

[0019] Please see Figure 3 A method for preparing an antibacterial and comfortable bamboo cotton yarn fabric includes the following steps: S1: Preparation of blended yarn: 70wt% bamboo fiber and 30wt% cotton fiber are opened, mixed, combed, drawn and twisted to make 70 / 30 bamboo-cotton blended yarn. S2: Fabric weaving, using blended yarns as warp and weft yarns, interwoven into plain weave by an air-jet loom, and then pre-treated by desizing, refining, bleaching, etc. to remove impurities and improve the cleanliness and hydrophilicity of the fibers. S3: Antibacterial finishing solution preparation, add the following in order of mass percentage: deionized water, nano silver antibacterial agent, water-based polyurethane adhesive, crosslinking agent, wetting agent and defoamer, and stir thoroughly until a uniform working solution without particles is formed; S4: Impregnation and coating forming. The pre-treated fabric is immersed in antibacterial finishing liquid, and the liquid content is controlled at 60%-70%. It is uniformly rolled by a two-roller press to remove excess liquid. The antibacterial coating on the surface of the fabric is immediately set by a setting device to form a wavy structure. S5: Curing and finishing: Fabric preparation can be completed by pre-baking, baking and cooling the fabric after the antibacterial coating is applied.

[0020] Specifically, by adopting the above preparation method, not only is the preparation of blended yarns realized, making the preparation process stable and controllable, suitable for industrial production, and environmentally friendly and safe, but also the antibacterial coating is bonded to the fabric surface in a wavy shape, ensuring the high efficiency and stability of industrial production.

[0021] Furthermore, in S3, the specific operating steps for preparing the antibacterial finishing solution are as follows: S301: First, based on the mixing ratio and the total amount of antibacterial finishing liquid required, calculate the required mass of deionized water, nano-silver antibacterial agent, waterborne polyurethane adhesive, crosslinking agent, wetting agent and defoamer, and then use an electronic scale for weighing and calibration. S302: First, add deionized water to the prepared container and stir at a speed of 300r / min-500r / min. Then, add nano silver antibacterial agent and water-based polyurethane adhesive in sequence and stir until completely dispersed. The stirring time is 3-5 minutes. S303: Then add crosslinking agent, wetting agent and defoamer, and stir at a speed of 300r / min-500r / min for 5 minutes-8 minutes until the system is uniform, free of particles and stratification.

[0022] Specifically, by using the above-mentioned method for preparing the antibacterial finishing solution, uniform and segmented stirring can ensure that the components are evenly dispersed, avoid agglomeration and localized reactions, improve the stability of the antibacterial finishing solution, and ensure consistent quality of subsequent coatings.

[0023] Furthermore, in S4, the specific steps for rolling the fabric after it has been immersed in the antibacterial finishing solution are as follows: S401: The treated fabric is smoothly introduced between the upper and lower rollers of the two-roll rolling mill, so that the fabric is laid out straight, without wrinkles or deviation, and passes through the gap between the rollers. This ensures that the fabric is in full contact with the rollers and is subjected to uniform force. Then the rolling mill is started to perform uniform rolling. S402: During the rolling process, the rolling pressure of the two-roll rolling machine is controlled at 0.2MPa-0.4MPa, and the fabric running speed is kept stable at 20m / min-30m / min, so that the fabric can be rolled under uniform speed and constant pressure. By combining uniform pressure with stable speed, the liquid content of the fabric is kept stable at 60%-70%, avoiding local over-wetness and over-dryness.

[0024] Specifically, the fabric immersed in the antibacterial finishing solution is rolled through the above steps, which not only improves the rolling uniformity and production efficiency, but also provides a stable foundation for the subsequent wavy coating formation.

[0025] Furthermore, in S4, the specific steps by which the shaping equipment shapes the antibacterial coating into a wavy shape are as follows: S403: The rolled fabric is placed in a setting equipment, and the fabric is squeezed by upper and lower corrugated pressure plates at the same time to squeeze the outer side of the antibacterial coating into a corrugated shape. S404: After pressing the upper and lower wavy pressure plates firmly on the fabric surface, several small arched columns in the shaping equipment are inserted from the side into the protrusions of the antibacterial coating. This creates an arched gap between the protrusions and the fabric, thus shaping the antibacterial coating into a wavy shape. S405: When setting the coating in a wavy shape, control the setting time to 15-30 seconds, and combine it with stable temperature to quickly form a uniform wavy structure for the antibacterial coating without damaging the fabric and antibacterial components.

[0026] Specifically, by using a setting device to perform an industrialized, automated, and efficient setting operation on the antibacterial coating, not only is the antibacterial coating bonded to the fabric, but the complete wave-shaped setting of the antibacterial coating is also achieved, giving the fabric antibacterial, comfortable, and tensile-resistant properties.

[0027] In S404, several small arched columns are provided on both sides of the antibacterial coating. Driven by an electric actuator, the small arched columns on both sides are inserted into the antibacterial coating until the front ends of the small arched columns make contact. This ensures that the small arched columns will not break or become unstable due to excessive length. At the same time, the bottom plane of the small arched columns is set slightly lower than the fabric surface. This setting allows the small arched columns to fully separate the antibacterial coating from the fabric when passing through it, ensuring the breathability of the fabric.

[0028] Furthermore, in S5, the specific steps for pre-drying the fabric are as follows: S501: The fabric that has been rolled and coated with a wavy pattern is fed into the pre-drying machine at a uniform speed in a straight, unstretched, and unoffset state, while maintaining low tension during the process. S502: Control the pre-drying temperature to 80℃-100℃ and the pre-drying time to 1-2 minutes to initially dry the fabric, remove excess moisture from the surface, and allow the antibacterial coating to initially set.

[0029] Specifically, by using the above-mentioned pre-baking method for the fabric, the fabric is minimized from being stretched, squeezed, and wrinkled, allowing the antibacterial coating on the surface to be pre-baked while maintaining its shape and structural integrity. This ensures that the wavy coating does not deform and also prevents bubbling and cracking during subsequent baking.

[0030] Furthermore, in S5, the specific steps for baking the fabric are as follows: S503: The pre-dried fabric is fed into the baking machine with low tension and straightness; S504: Control the baking temperature to 150℃-155℃, the baking time to 1 minute-2 minutes, and complete the baking at a uniform speed without stretching.

[0031] Specifically, by baking the fabric as described above, the antibacterial finishing liquid is fully cured and cross-linked, ensuring the integrity of the wavy coating structure and strong adhesion.

[0032] Furthermore, in S5, the specific steps for cooling the fabric are as follows: S505: The baked fabric is fed into the cooling device at a uniform speed under low tension, no stretching, and while maintaining the integrity of the wavy coating. S506: The fabric is lifted into the cooling device by gripping the upper corners of both ends of the fabric with a clamp. S507: Cooling is achieved by air cooling. Multiple fans are installed on both sides of the fabric to cool both sides simultaneously. The cooling temperature is controlled at 25℃-40℃ and the cooling time is 30-60 seconds, which allows the antibacterial coating to fully cure and set, and the fabric temperature to drop to room temperature.

[0033] Specifically, this cooling method not only improves the cooling efficiency of the fabric, allowing the fabric and antibacterial coating to be completely cooled in a short time, preventing the antibacterial coating from shrinking, deforming, or sticking together and ensuring the stability of the wave structure, but also minimizes the deformation of the fabric and antibacterial coating during the cooling process, ensuring the high efficiency and stability of industrial production.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An antibacterial and comfortable bamboo cotton yarn fabric, characterized in that: It is made of interwoven warp and weft yarns, both of which are blended yarns. The blended yarns are made of 70wt% bamboo fiber and 30wt% cotton fiber. Antibacterial coatings are provided on the inner and outer surfaces of the fabric. The antibacterial coatings are wavy and the inner part of the antibacterial coatings is bonded to the surface of the fabric.

2. The antibacterial and comfortable bamboo cotton yarn fabric according to claim 1, characterized in that: The antibacterial coating is formed by curing an antibacterial finishing liquid, which comprises the following components by mass percentage: Nano silver antibacterial agent (1000ppm dispersion): 2%-5% Waterborne polyurethane adhesives: 10%-15% Crosslinking agent (isocyanate): 1%-3% Wetting agent: 0.5%-1% Defoamer: 0.1%-0.3% Deionized water: balance (to 100%).

3. A method for preparing an antibacterial and comfortable bamboo cotton yarn fabric, applied to the antibacterial and comfortable bamboo cotton yarn fabric as described in any one of claims 1-2, characterized in that: The implementation steps include the following: S1: Preparation of blended yarn: 70wt% bamboo fiber and 30wt% cotton fiber are opened, mixed, combed, drawn and twisted to make 70 / 30 bamboo-cotton blended yarn. S2: Fabric weaving, using blended yarns as warp and weft yarns, interwoven into plain weave by an air-jet loom, and then pre-treated by desizing, refining, bleaching, etc. to remove impurities and improve the cleanliness and hydrophilicity of the fibers. S3: Antibacterial finishing solution preparation, add the following in order of mass percentage: deionized water, nano silver antibacterial agent, water-based polyurethane adhesive, crosslinking agent, wetting agent and defoamer, and stir thoroughly until a uniform working solution without particles is formed; S4: Impregnation and coating forming. The pre-treated fabric is immersed in antibacterial finishing liquid, and the liquid content is controlled at 60%-70%. It is uniformly rolled by a two-roller press to remove excess liquid. The antibacterial coating on the surface of the fabric is immediately set by a setting device to form a wavy structure. S5: Curing and finishing: Fabric preparation can be completed by pre-baking, baking and cooling the fabric after the antibacterial coating is applied.

4. The method for preparing an antibacterial and comfortable bamboo cotton yarn fabric according to claim 3, characterized in that: The specific operating steps for preparing the antibacterial finishing solution in S3 are as follows: S301: First, based on the mixing ratio and the total amount of antibacterial finishing liquid required, calculate the required mass of deionized water, nano-silver antibacterial agent, waterborne polyurethane adhesive, crosslinking agent, wetting agent and defoamer, and then use an electronic scale for weighing and calibration. S302: First, add deionized water to the prepared container and stir at a speed of 300r / min-500r / min. Then, add nano silver antibacterial agent and water-based polyurethane adhesive in sequence and stir until completely dispersed. The stirring time is 3-5 minutes. S303: Then add crosslinking agent, wetting agent and defoamer, and stir at a speed of 300r / min-500r / min for 5 minutes-8 minutes until the system is uniform, free of particles and stratification.

5. The method for preparing an antibacterial and comfortable bamboo cotton yarn fabric according to claim 4, characterized in that: In S4, the specific steps for rolling the fabric after it has been immersed in the antibacterial finishing solution are as follows: S401: The treated fabric is smoothly introduced between the upper and lower rollers of the two-roll rolling mill, so that the fabric is laid out straight, without wrinkles or deviation, and passes through the gap between the rollers. This ensures that the fabric is in full contact with the rollers and is subjected to uniform force. Then the rolling mill is started to perform uniform rolling. S402: During the rolling process, the rolling pressure of the two-roll rolling machine is controlled at 0.2MPa-0.4MPa, and the fabric running speed is kept stable at 20m / min-30m / min, so that the fabric can be rolled under uniform speed and constant pressure. By combining uniform pressure with stable speed, the liquid content of the fabric is kept stable at 60%-70%, avoiding local over-wetness and over-dryness.

6. The method for preparing an antibacterial and comfortable bamboo cotton yarn fabric according to claim 5, characterized in that: In S4, the specific steps by which the shaping equipment shapes the antibacterial coating into a wavy shape are as follows: S403: The rolled fabric is placed in a setting equipment, and the fabric is squeezed by upper and lower corrugated pressure plates at the same time to squeeze the outer side of the antibacterial coating into a corrugated shape. S404: After pressing the upper and lower wavy pressure plates firmly on the fabric surface, several small arched columns in the shaping equipment are inserted from the side into the protrusions of the antibacterial coating. This creates an arched gap between the protrusions and the fabric, thus shaping the antibacterial coating into a wavy shape. S405: When setting the coating in a wavy shape, control the setting time to 15-30 seconds, and combine it with stable temperature to quickly form a uniform wavy structure for the antibacterial coating without damaging the fabric and antibacterial components.

7. The method for preparing an antibacterial and comfortable bamboo cotton yarn fabric according to claim 6, characterized in that: In S404, several small arch-shaped columns are provided on both sides of the antibacterial coating. Driven by an electric actuator, the bottom plane of the small arch-shaped columns is set lower than the fabric surface.

8. The method for preparing an antibacterial and comfortable bamboo cotton yarn fabric according to claim 7, characterized in that: In S5, the specific steps for pre-drying the fabric are as follows: S501: The fabric that has been rolled and coated with a wavy pattern is fed into the pre-drying machine at a uniform speed in a straight, unstretched, and unoffset state, while maintaining low tension during the process. S502: Control the pre-drying temperature to 80℃-100℃ and the pre-drying time to 1-2 minutes to initially dry the fabric, remove excess moisture from the surface, and allow the antibacterial coating to initially set.

9. The method for preparing an antibacterial and comfortable bamboo cotton yarn fabric according to claim 8, characterized in that: In S5, the specific steps for baking the fabric are as follows: S503: The pre-dried fabric is fed into the baking machine with low tension and straightness; S504: Control the baking temperature to 150℃-155℃, the baking time to 1 minute-2 minutes, and complete the baking at a uniform speed without stretching.

10. The method for preparing an antibacterial and comfortable bamboo cotton yarn fabric according to claim 9, characterized in that: In S5, the specific steps for cooling the fabric are as follows: S505: The baked fabric is fed into the cooling device at a uniform speed under low tension, no stretching, and while maintaining the integrity of the wavy coating. S506: The fabric is lifted into the cooling device by gripping the upper corners of both ends of the fabric with a clamp. S507: Cooling is achieved by air cooling. Multiple fans are installed on both sides of the fabric to cool both sides simultaneously. The cooling temperature is controlled at 25℃-40℃ and the cooling time is 30-60 seconds, which allows the antibacterial coating to fully cure and set, and the fabric temperature to drop to room temperature.

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