Preparation method of high-breathability antibacterial yoga pants material

Abstract

The invention discloses a preparation method of a high-breathability antibacterial yoga pants material, and relates to a functional textile material technology. The raw materials comprise moisture-absorbing breathable quick-dry fibers, antibacterial bamboo charcoal fibers, elastic spandex, skin-friendly soft fibers, functional plant fibers and covalent bond fixed modified antibacterial auxiliaries. After the components are prepared in parts by mass, the fabric is formed through blending, circular knitting or weft knitting, a one-bath process after-finishing process is adopted for treatment, the air permeability, moisture absorption and quick drying performance and rebound resilience are remarkably improved, and meanwhile the fabric is endowed with long-term washable and antibacterial capacity through embedded bamboo charcoal and covalent binding antibacterial components. The fabric prepared by the method is excellent in comprehensive performance and suitable for the field of high-performance close-fitting sportswear.

Description

Technical Field

[0001] This invention relates to functional textile materials technology, and in particular to a method for preparing a highly breathable and antibacterial yoga pants material. Background Technology

[0002] In today's sportswear industry, especially in yoga pants materials, consumers are increasingly demanding higher levels of functionality and comfort from their garments. Besides excellent moisture-wicking, quick-drying, and elasticity, antibacterial and odor-resistant properties, breathability, lightweight construction, and environmentally friendly components have become indispensable attributes.

[0003] 1. Functional limitations of existing materials (1) Antibacterial and deodorizing treatments mostly rely on chemical finishing processes. Some existing fabric materials undergo finishing treatment with chemical antibacterial agents (such as silver ions, nanoparticles, and antibacterial coatings) to enhance their antibacterial properties. However, such treatments pose potential chemical residue problems, which may irritate the skin and increase the environmental burden. For example, some "bamboo fiber sports fabrics," although woven from bamboo charcoal fiber, often have an antibacterial layer that is a nano-silver ion coating, which falls under the category of chemical coatings (CN10 133 387 Y).

[0004] (2) Lack of overall design that takes into account multiple functions While some designs balance breathability and moisture absorption, they are often single-function. For example, some sports fabrics may contain breathable, sweat-wicking, and UV-resistant layers, but their antibacterial function is limited to the bottom coating, making it difficult to achieve synergistic performance as a whole.

[0005] 2. Advantages of bamboo charcoal fiber and natural fibers in terms of antibacterial properties and comfort. (1) Bamboo charcoal fiber has natural antibacterial, moisture-absorbing and health-preserving functions. Bamboo charcoal fiber, due to its porous structure and physical properties, possesses excellent natural functions such as adsorption, dehumidification, and far-infrared emission. Far-infrared bamboo charcoal fiber can even promote blood circulation and enhance immunity, among other health benefits (CN11 226 533 2A); its porous adsorption properties also give it a potential advantage in sterilization and deodorization (CN10 666 856 A).

[0006] (2) Blended fabrics can achieve both comfort and functionality. In a yoga towel design based on a blend of hexane and polyester with an added bamboo charcoal layer, the bamboo charcoal layer provides moisture-wicking, breathable, and antibacterial properties, the hexane provides natural antibacterial and soft touch, and the polyester enhances elasticity and shape retention. The overall structure improves comfort and functionality.

[0007] 3. Market trends and existing patented technologies are insufficient to meet the demand for multi-functional integration. While existing patents or products have achieved individual functionalities in antibacterial, moisture-wicking, and breathable properties, they often focus on a single function or lack a comprehensive combination of these functions. For example: The nano-silver coating enhances antibacterial properties, but overall optimization of breathability and environmental friendliness has not been made.

[0008] While using multi-layered structures to achieve functions such as sweat absorption, UV protection, and wear resistance, the natural antibacterial and far-infrared health properties (such as CN10 133 387 Y) are neglected.

[0009] The yoga towel is designed with a combination of bamboo charcoal and hemp fiber to enhance comfort and moisture absorption, but it is mainly used as a towel rather than for close-fitting clothing. Further exploration is needed to explore its potential for use in yoga pants.

[0010] In summary, the current market and related patents still have shortcomings in the following aspects: While chemical antibacterial treatments are effective, they introduce potential irritants and environmental risks. Functionality is fragmented, and common products focus on a single performance, making it difficult to achieve overall performance. The advantages of natural fibers have not been fully integrated into the design of close-fitting clothing, making it difficult to achieve a balance between comfort, health, and functionality.

[0011] Therefore, there is an urgent need for a technical solution to develop yoga pants fabric that combines natural antibacterial and deodorizing properties with high breathability, moisture-wicking and quick-drying properties, good elasticity, and environmental friendliness, by addressing the issues of fiber ratio, composite structure, and post-processing. This is precisely the technical problem that this invention aims to solve. Summary of the Invention

[0012] To overcome the shortcomings of the prior art, the present invention provides a method for preparing a highly breathable and antibacterial yoga pants material. By compounding or blending a variety of functional fibers with moisture absorption and breathability, antibacterial and deodorizing properties, elasticity and environmentally friendly feel, a yoga pants fabric with excellent breathability, antibacterial properties and wearing comfort is obtained.

[0013] The specific plan is as follows: A method for preparing a highly breathable and antibacterial yoga pants material includes the following steps: (1) Raw material preparation: Prepare and mix the raw materials according to the following proportion range: Moisture-wicking, breathable, and quick-drying fiber: 40-50 parts per 100 grams Antibacterial bamboo charcoal fiber: 20-30 parts Elastic resilience fiber spandex: 5-10 parts Skin-friendly soft fibers: 5-10 parts Functional fibers: 0-5 parts Modified antibacterial adjuvant: 2-6 parts (2) Blending: The above components are fully mixed in a blending machine according to the specified mass ratio, and then spun into blended yarn; (3) Knitting: The blended yarn is knitted into fabric using a knitting method, with a knitting density ranging from 20 to 40 stitches per inch; (4) Finishing and dyeing: Using the "one-bath" process, add 240-360 parts of deionized water, 0.05-1.0 parts of cellulase, and 1-5 parts of natural environmentally friendly dyes, and treat at 60-75 ℃ for 30-90 minutes; then raise the temperature to 85-95 ℃ and maintain it for 10-30 minutes to deactivate the enzymes, and finally rinse clean and dry and set.

[0014] Furthermore, the moisture-wicking, breathable, and quick-drying fiber is selected from at least one of Coolplus, Coolmax, or cupro fiber.

[0015] Furthermore, the antibacterial bamboo charcoal fiber is selected from natural bamboo charcoal fiber or nano bamboo charcoal fiber.

[0016] Furthermore, the skin-friendly soft fiber is selected from one or a combination of silkworm pupa protein fiber, pearl fiber, modal fiber, and soybean protein fiber.

[0017] Furthermore, the functional fibers are selected from aloe vera fibers and bamboo vinegar-treated fibers.

[0018] Furthermore, the preparation method of the modified antibacterial adjuvant is as follows: (1) Raw material ratio: By weight, add 20-30 parts peppermint fiber, 0.3-2 parts vanillin, and 0.3-2 parts gallic acid; (2) Mix 500-600 parts of anhydrous ethanol and add 0.1-0.3 parts of catalyst hydrochloric acid, with a concentration of 1-5 mol / L; (2) Condensation reaction: Heat to 45-65℃, stir for 2-5 hours, and control pH 4-5; (3) Post-treatment: Add 0.6-1.2 parts of sodium bicarbonate to neutralize to pH 6-7, concentrate under reduced pressure at 50-100 mbar and 40-50℃ to 1 / 4 volume, dilute with 10-20 parts of deionized water, and filter through a 1-3 μm nylon filter membrane to obtain the modified antibacterial adjuvant.

[0019] Furthermore, the knitting method is selected from circular knitting or weft knitting.

[0020] Furthermore, the natural and environmentally friendly dyes mentioned are selected from indigo, safflower, and woody dyes.

[0021] Furthermore, the drying temperature is 80-110 ℃.

[0022] Reaction mechanism Under hydrochloric acid catalysis, the hydroxyl groups on the surface of peppermint fiber are protonated and activated, and then undergo nucleophilic addition-elimination reactions with the aldehyde group of vanillin and the phenolic hydroxyl group of gallic acid, forming a peppermint fiber-vanillin-gallic acid ternary condensate through covalent bonds. This not only retains the antibacterial active site (phenolic hydroxyl group) but also improves the stability of the component binding, avoiding the problem of easy shedding when physically mixed.

[0023] Technical effect 1. Enhances breathability and moisture-wicking properties By introducing a composite structure of moisture-wicking and quick-drying fibers and bamboo charcoal fibers, a fiber network with rapid sweat transfer and evaporation functions is constructed, thereby significantly improving the fabric's breathability and dryness. This structure avoids the feeling of dampness and stickiness against the skin, enhancing wearing comfort.

[0024] 2. Natural antibacterial and long-lasting deodorizing function Bamboo charcoal fiber naturally possesses a highly porous structure, effectively adsorbing bacteria and odor molecules; its antibacterial and deodorizing properties are due to the carbonization structure being embedded inside the fiber rather than being a surface coating, allowing it to withstand long-term washing without losing its effectiveness.

[0025] 3. Excellent resilience and structural stability The balanced blend of elastic and functional fibers gives the fabric excellent elasticity and resilience. Combined with a composite structure of functional fibers, this ensures the fabric maintains its shape and fit even after frequent stretching and contraction, meeting the demands of yoga for both a snug fit and flexibility.

[0026] 4. Antibacterial properties are effectively improved. The yoga pants material prepared by this method has an antibacterial component fixed by condensation reaction, which works synergistically with the natural antibacterial properties of mint fiber. Moreover, the antibacterial component is not easily lost due to covalent bonding. After 50 washes, the antibacterial rate is still ≥90%. At the same time, combined with the porous structure of moisture-wicking and quick-drying fibers and mint fiber, the breathability is improved compared with ordinary yoga pants, achieving a high-efficiency balance between antibacterial properties and breathability. Detailed Implementation

[0027] The present invention will be further described below with reference to specific embodiments, but the invention is not limited to these specific embodiments. Those skilled in the art should recognize that the present invention covers all alternatives, improvements, and equivalents that may be included within the scope of the claims.

[0028] Example 1 A method for preparing a highly breathable and antibacterial yoga pants material includes the following steps: (1) Raw material preparation: Prepare and mix the raw materials according to the following quantities: Coolplus (40kg) is a moisture-wicking, breathable, and quick-drying fiber. Antibacterial bamboo charcoal fiber (natural bamboo charcoal fiber): 20kg Elastic resilient spandex fiber: 5kg Skin-friendly soft fiber (silkworm pupa protein fiber): 5kg Functional fiber (bamboo vinegar treated fiber): 0.5kg Modified antibacterial adjuvant: 2kg (2) Blending: The above components are thoroughly mixed in a blending machine according to the mass ratio to produce blended yarn; (3) Knitting: The blended yarn is knitted into fabric using circular knitting method, with a knitting density of 20 stitches / inch; (4) Finishing and dyeing: Using the "one-bath method", 240 kg of deionized water, 0.05 kg of cellulase and 1 kg of natural environmentally friendly dye (indigo) are added and treated at 60°C for 30 minutes; then the temperature is raised to 85°C and held for 10 minutes to deactivate the enzyme. Finally, the mixture is rinsed clean and dried and set at 80°C.

[0029] The preparation method of the modified antibacterial adjuvant: (1) Raw material ratio: Mix 20kg of peppermint fiber, 0.3kg of vanillin, 0.3kg of gallic acid with 500kg of anhydrous ethanol, and add 0.1kg of 1mol / L hydrochloric acid catalyst; (2) Condensation reaction: Heat to 45℃, stir for 2 hours, and control pH 4-5; (3) Post-treatment: Add 0.6 kg of sodium bicarbonate to neutralize to pH 6-7, concentrate under reduced pressure (pressure 50 mbar, temperature 40℃) to 1 / 4 volume, add 10 kg of deionized water to dilute, and filter through a 1 μm nylon filter membrane to obtain the modified antibacterial adjuvant.

[0030] Example 2 A method for preparing a highly breathable and antibacterial yoga pants material includes the following steps: (1) Raw material preparation: Prepare and mix the raw materials according to the following quantities: Coolmax (43kg) - a moisture-wicking, breathable, and quick-drying fiber Antibacterial bamboo charcoal fiber (nano bamboo charcoal fiber): 23kg Elastic resilient spandex fiber: 6.5kg Skin-friendly soft fiber (pearl fiber): 6.5kg Functional fiber (aloe vera fiber): 1.5kg Modified antibacterial adjuvant: 3kg (2) Blending: The above components are thoroughly mixed in a blending machine according to the mass ratio to produce blended yarn; (3) Knitting: The blended yarn is knitted into fabric using weft knitting method, with a knitting density of 25 stitches / inch; (4) Finishing and dyeing: Using the "one-bath method", 280kg of deionized water, 0.3kg of cellulase and 2kg of natural environmentally friendly dye (safflower) are added and treated at 65℃ for 50 minutes; then the temperature is raised to 88℃ and held for 15 minutes to deactivate the enzyme, and finally rinsed clean and dried and shaped at 90℃.

[0031] The preparation method of the modified antibacterial adjuvant: (1) Raw material ratio: Mix 23kg of peppermint fiber, 0.8kg of vanillin, 0.8kg of gallic acid with 530kg of anhydrous ethanol, and add 0.15kg of 2mol / L hydrochloric acid catalyst; (2) Condensation reaction: Heat to 50℃, stir for 3 hours, and control pH 4-5; (3) Post-treatment: Add 0.8 kg of sodium bicarbonate to neutralize to pH 6-7, concentrate under reduced pressure (pressure 65 mbar, temperature 43℃) to 1 / 4 volume, add 13 kg of deionized water to dilute, and filter through a 1.5 μm nylon filter membrane to obtain the modified antibacterial adjuvant.

[0032] Example 3 A method for preparing a highly breathable and antibacterial yoga pants material includes the following steps: (1) Raw material preparation: Prepare and mix the raw materials according to the following quantities: Moisture-wicking, breathable, and quick-drying fiber (cubic ammonia fiber): 47kg Antibacterial bamboo charcoal fiber (natural bamboo charcoal fiber): 27kg Elastic resilient spandex fiber: 8.5kg Skin-friendly soft fiber (modal fiber): 8.5kg Functional fiber (bamboo vinegar treated fiber): 3.5kg Modified antibacterial adjuvant: 5kg (2) Blending: The above components are thoroughly mixed in a blending machine according to the mass ratio to produce blended yarn; (3) Knitting: The blended yarn is knitted into fabric using circular knitting method, with a knitting density of 35 stitches / inch; (4) Finishing and dyeing: Using the "one-bath method", 320kg of deionized water, 0.7kg of cellulase and 4kg of natural environmentally friendly dye (wood dye) are added and treated at 70℃ for 70 minutes; then the temperature is raised to 92℃ and maintained for 25 minutes to deactivate the enzyme, and finally rinsed clean and dried and shaped at 100℃.

[0033] The preparation method of the modified antibacterial adjuvant: (1) Raw material ratio: Mix 27kg peppermint fiber, 1.5kg vanillin, 1.5kg gallic acid with 570kg anhydrous ethanol, and add 0.25kg of 4mol / L hydrochloric acid catalyst; (2) Condensation reaction: Heat to 60℃, stir for 4 hours, and control pH 4-5; (3) Post-treatment: Add 1.0 kg of sodium bicarbonate to neutralize to pH 6-7, concentrate under reduced pressure (pressure 85 mbar, temperature 47℃) to 1 / 4 volume, add 17 kg of deionized water to dilute, and filter through a 2.5 μm nylon filter membrane to obtain the modified antibacterial adjuvant.

[0034] Example 4 A method for preparing a highly breathable and antibacterial yoga pants material includes the following steps: (1) Raw material preparation: Prepare and mix the raw materials according to the following quantities: Coolmax (50kg) is a moisture-wicking, breathable, and quick-drying fiber. Antibacterial bamboo charcoal fiber (nano bamboo charcoal fiber): 30kg Elastic resilient spandex fiber: 10kg Skin-friendly soft fiber (soy protein fiber): 10kg Functional fiber (aloe vera fiber): 5kg Modified antibacterial adjuvant: 6kg (2) Blending: The above components are thoroughly mixed in a blending machine according to the mass ratio to produce blended yarn; (3) Knitting: The blended yarn is knitted into fabric using weft knitting method, with a knitting density of 40 stitches / inch; (4) Finishing and dyeing: Using the "one-bath method", 360kg of deionized water, 1.0kg of cellulase and 5kg of natural environmentally friendly dye (safflower) are added and treated at 75℃ for 90 minutes; then the temperature is raised to 95℃ and maintained for 30 minutes to deactivate the enzyme, and finally rinsed clean and dried and shaped at 110℃.

[0035] The preparation method of the modified antibacterial adjuvant: (1) Raw material ratio: Mix 30kg of peppermint fiber, 2kg of vanillin, 2kg of gallic acid with 600kg of anhydrous ethanol, and add 0.3kg of 5mol / L hydrochloric acid catalyst; (2) Condensation reaction: Heat to 65℃, stir for 5 hours, and control pH 4-5; (3) Post-treatment: Add 1.2 kg of sodium bicarbonate to neutralize to pH 6-7, concentrate under reduced pressure (100 mbar, 50 °C) to 1 / 4 volume, dilute with 20 kg of deionized water, and filter through a 3 μm nylon filter membrane to obtain the modified antibacterial adjuvant.

[0036] Comparative Example 1 A method for preparing a highly breathable and antibacterial yoga pants material includes the following steps: (1) Raw material preparation: Prepare and mix the raw materials according to the following quantities: Coolplus (40kg) is a moisture-wicking, breathable, and quick-drying fiber. Antibacterial bamboo charcoal fiber (natural bamboo charcoal fiber): 20kg Elastic resilient spandex fiber: 5kg Skin-friendly soft fiber (silkworm pupa protein fiber): 5kg Functional fiber (bamboo vinegar treated fiber): 0.5kg (2) Blending: The above components are thoroughly mixed in a blending machine according to the mass ratio to produce blended yarn; (3) Knitting: The blended yarn is knitted into fabric using circular knitting method, with a knitting density of 20 stitches / inch; (4) Finishing and dyeing: Using the "one-bath method", 240 kg of deionized water, 0.05 kg of cellulase and 1 kg of natural environmentally friendly dye (indigo) are added and treated at 60°C for 30 minutes; then the temperature is raised to 85°C and held for 10 minutes to deactivate the enzyme. Finally, the mixture is rinsed clean and dried and set at 80°C.

[0037] Comparative Example 2 A method for preparing a highly breathable and antibacterial yoga pants material includes the following steps: (1) Raw material preparation: Prepare and mix the raw materials according to the following quantities: Coolplus (40kg) is a moisture-wicking, breathable, and quick-drying fiber. Antibacterial bamboo charcoal fiber (natural bamboo charcoal fiber): 20kg Elastic resilient spandex fiber: 5kg Skin-friendly soft fiber (silkworm pupa protein fiber): 5kg Functional fiber (bamboo vinegar treated fiber): 0.5kg Modified antibacterial adjuvant: 2kg (2) Blending: The above components are thoroughly mixed in a blending machine according to the mass ratio to produce blended yarn; (3) Knitting: The blended yarn is knitted into fabric using circular knitting method, with a knitting density of 20 stitches / inch; (4) Finishing and dyeing: Using the "one-bath method", 240 kg of deionized water, 0.05 kg of cellulase and 1 kg of natural environmentally friendly dye (indigo) are added and treated at 60°C for 30 minutes; then the temperature is raised to 85°C and held for 10 minutes to deactivate the enzyme. Finally, the mixture is rinsed clean and dried and set at 80°C.

[0038] The preparation method of the modified antibacterial adjuvant: (1) Raw material ratio: Mix 20kg of peppermint fiber, 0.3kg of vanillin, and 500kg of anhydrous ethanol, and add 0.1kg of 1mol / L hydrochloric acid catalyst; (2) Condensation reaction: Heat to 45℃, stir for 2 hours, and control pH 4-5; (3) Post-treatment: Add 0.6 kg of sodium bicarbonate to neutralize to pH 6-7, concentrate under reduced pressure (pressure 50 mbar, temperature 40℃) to 1 / 4 volume, add 10 kg of deionized water to dilute, and filter through a 1 μm nylon filter membrane to obtain the modified antibacterial adjuvant.

[0039] Comparative Example 3 A method for preparing a highly breathable and antibacterial yoga pants material includes the following steps: (1) Raw material preparation: Prepare and mix the raw materials according to the following quantities: Coolplus (40kg) is a moisture-wicking, breathable, and quick-drying fiber. Antibacterial bamboo charcoal fiber (natural bamboo charcoal fiber): 20kg Elastic resilient spandex fiber: 5kg Skin-friendly soft fiber (silkworm pupa protein fiber): 5kg Functional fiber (bamboo vinegar treated fiber): 0.5kg Modified antibacterial adjuvant: 2kg (2) Blending: The above components are thoroughly mixed in a blending machine according to the mass ratio to produce blended yarn; (3) Knitting: The blended yarn is knitted into fabric using circular knitting method, with a knitting density of 20 stitches / inch; (4) Finishing and dyeing: Using the "one-bath method", 240 kg of deionized water, 0.05 kg of cellulase and 1 kg of natural environmentally friendly dye (indigo) are added and treated at 60°C for 30 minutes; then the temperature is raised to 85°C and held for 10 minutes to deactivate the enzyme. Finally, the mixture is rinsed clean and dried and set at 80°C.

[0040] The preparation method of the modified antibacterial adjuvant: (1) Raw material ratio: Mix 20kg of peppermint fiber, 0.3kg of gallic acid, and 500kg of anhydrous ethanol, and add 0.1kg of 1mol / L hydrochloric acid catalyst; (2) Condensation reaction: Heat to 45℃, stir for 2 hours, and control pH 4-5; (3) Post-treatment: Add 0.6 kg of sodium bicarbonate to neutralize to pH 6-7, concentrate under reduced pressure (pressure 50 mbar, temperature 40℃) to 1 / 4 volume, add 10 kg of deionized water to dilute, and filter through a 1 μm nylon filter membrane to obtain the modified antibacterial adjuvant.

[0041] The testing method involved in this invention is as follows: 1. Air permeability Standard: ASTM D737 Conditions: Pressure differential 125 Pa, test aperture and fixture according to standard, results expressed in cm³ / s / cm². 2. Liquid Moisture Management / Quick-drying Standard: AATCC TM195 (Liquid Moisture Management) Output: OMMC composite index, the higher the OMMC, the better (close to 1 is excellent).

[0042] 3. Antibacterial efficacy (quantitative) Standard: AATCC 100 (Quantitative Contact Inhibition Method) Bacterial strains: Staphylococcus aureus ATCC 6538 and Escherichia coli ATCC 25922; inoculum size ~10^5–10^6 CFU / mL; contact time 24 h, 37 ℃; recovered and counted colonies according to standard, and calculated inhibition rate (%).

[0043] 4. Antibacterial and washable (durable) Reference standards: ASTM E3162 (Antibacterial agent durability assessment) and ISO 6330 household washing simulation; AATCC 100 test after 50 washes.

[0044] 5. Drying rate / Moisture absorption drying Standard: ISO 17617 (Drying rate of textiles) or quantify the drying rate under constant conditions using a mass loss-time curve. Record the time required for the sample to dry from wet to dry under constant temperature and humidity conditions (or the mass of volatiles per unit time).

[0045] 6. Mechanical properties (fracture strength) Standard: ASTM D5034 (Grab breaking strength) or other fabric tensile tests.

[0046] Table 1. Results of air permeability and liquid moisture management tests Table 2 Antibacterial performance test results Table 3. Test results of drying performance and mechanical properties This method demonstrates high breathability and excellent moisture management; the antibacterial (AATCC 100) inhibition rate against S. aureus and E. coli is >95% (0 washes), and remains ≥90% after 50 washes; the mechanical properties meet the requirements for close-fitting sportswear.

[0047] Although specific embodiments of the invention have been described in detail, variations of these embodiments can be implemented by those skilled in the art. Furthermore, as set forth in the appended claims, such variations can be obtained without departing from the true spirit and scope of the invention.

Claims

1. A method for preparing a highly breathable and antibacterial yoga pants material, characterized in that, Includes the following steps: (1) Raw material preparation: Prepare and mix the raw materials according to the following proportion range: Moisture-wicking, breathable, and quick-drying fiber: 40-50 parts per 100 grams Antibacterial bamboo charcoal fiber: 20-30 parts Elastic resilient spandex fiber: 5-10 parts Skin-friendly soft fibers: 5-10 parts Functional fibers: 0-5 parts Modified antibacterial adjuvant: 2-6 parts (2) Blending: The above components are fully mixed in a blending machine according to the specified mass ratio, and then spun into blended yarn; (3) Knitting: The blended yarn is knitted into fabric using a knitting method, with a knitting density ranging from 20 to 40 stitches per inch; (4) Finishing and dyeing: Using a "one-bath" process, add 240-360 parts deionized water, 0.05-1.0 parts cellulase, and 1-5 parts natural environmentally friendly dyes, and treat at 60-75 ℃ for 30-90 minutes; then raise the temperature to 85-95 ℃ and maintain for 10-30 minutes to deactivate the enzymes, and finally rinse thoroughly and dry and set. The modified antibacterial adjuvant is prepared by reacting peppermint fiber, vanillin, gallic acid, and hydrochloric acid, followed by neutralization with sodium bicarbonate, dilution with deionized water, and filtration through a nylon filter membrane.

2. The method for preparing a highly breathable and antibacterial yoga pants material according to claim 1, characterized in that: The moisture-wicking, breathable, and quick-drying fiber is selected from at least one of Coolplus, Coolmax, or cupro fiber.

3. The method for preparing a highly breathable and antibacterial yoga pants material according to claim 1, characterized in that: The antibacterial bamboo charcoal fiber is selected from natural bamboo charcoal fiber or nano bamboo charcoal fiber.

4. The method for preparing a highly breathable and antibacterial yoga pants material according to claim 1, characterized in that: The skin-friendly and soft fibers are selected from one or a combination of silkworm pupa protein fibers, pearl fibers, modal fibers, and soybean protein fibers.

5. The method for preparing a highly breathable and antibacterial yoga pants material according to claim 1, characterized in that: The functional fiber is selected from at least one of aloe vera fiber and bamboo vinegar treated fiber.

6. The method for preparing a highly breathable and antibacterial yoga pants material according to claim 1, characterized in that: The preparation method of the modified antibacterial adjuvant: (1) Raw material ratio: By weight, add 20-30 parts peppermint fiber, 0.3-2 parts vanillin, and 0.3-2 parts gallic acid; (2) Mix 500-600 parts of anhydrous ethanol and add 0.1-0.3 parts of catalyst hydrochloric acid, with a concentration of 1-5 mol / L; (2) Condensation reaction: Heat to 45-65℃, stir for 2-5 hours, and control pH 4-5; (3) Post-treatment: Add 0.6-1.2 parts of sodium bicarbonate to neutralize to pH 6-7, concentrate under reduced pressure at 50-100 mbar and 40-50℃ to 1 / 4 volume, dilute with 10-20 parts of deionized water, and filter through a 1-3 μm nylon filter membrane to obtain the modified antibacterial adjuvant.

7. The method for preparing a highly breathable and antibacterial yoga pants material according to claim 1, characterized in that: The knitting method is selected from circular knitting or weft knitting.

8. The method for preparing a highly breathable and antibacterial yoga pants material according to claim 1, characterized in that: The natural and environmentally friendly dyes are selected from at least one of indigo, safflower, and woody dyes.

9. The method for preparing a highly breathable and antibacterial yoga pants material according to claim 1, characterized in that: The drying temperature is 80-110 ℃.

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