Mite-proof and feather-proof fabric and processing method thereof

Abstract

The present application relates to the technical field of textile material, and discloses an anti-mite and anti-feather fabric and a processing method thereof.The fabric comprises: an outer layer made of satin weave, with a weft density of 150-170 per inch, and having a high-density anti-feather structure; a middle layer containing modified polyester fibers embedded with a mite repellent, woven in honeycomb weave, with a weft density of 110-130 per inch, and used for providing an anti-mite function; and an inner layer made of twill weave, for improving the softness and air permeability of the fabric.The fabric is treated with a functional treatment liquid, which comprises the following components in the mass concentration range: anti-mite microcapsules: 50-70 g / L; modified waterborne polyurethane: 40-60 g / L.Through the slow-release structure of the anti-mite microcapsules, the modified waterborne polyurethane coating, and the optimized processing technology, the fabric realizes long-acting anti-mite, high-efficiency anti-feather, softness, air permeability, and functional durability.

Description

Technical Field

[0001] This invention relates to the field of textile materials technology, specifically to a mite-proof and feather-proof fabric and its processing method. Background Technology

[0002] Mite-repellent and down-proof fabrics are functional textile materials that combine mite-repellent and down-proof functions, widely used in high-end home textiles and apparel. These fabrics typically achieve their mite-repellent function by applying a functional coating to the textile substrate or through fiber modification, while enhancing their down-proof performance through high-density weave structures, functional treatment solutions, or surface treatment technologies. Processing methods generally include the preparation of functional treatment solutions, fabric padding, heat setting, and finishing steps to impart multiple properties to the fabric.

[0003] Existing mite-proof and down-proof fabrics are typically manufactured using a combination of surface coating and high-density weaving techniques. By applying a functional coating containing a mite-repellent to the fabric surface, the mite-repellent is continuously released during use, achieving a mite-repellent effect. Simultaneously, the use of satin weaves or high-density weaves effectively enhances the fabric's down-proof properties. These fabrics possess good mite-repellent effects and well-sealed fillings, and the processing technology is relatively mature, leading to a continuous expansion of their application areas.

[0004] In existing technologies, mite-repellent functions mostly rely on surface coatings, and the release rate of the mite repellent is difficult to control stably, resulting in poor functional durability. The mite-repellent effect decreases after too many washes. In addition, relying solely on high-density weaving structures to achieve feather-proof performance, although it has a certain effect, will reduce the breathability and softness of the fabric by increasing the weaving density, affecting the comfort and applicability of the product. During the processing, the stability and uniformity of the functional treatment liquid are also insufficient, resulting in uneven treatment effects, which makes it difficult to meet the requirements of high-performance textiles. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a mite-proof and feather-proof fabric and its processing method, which solves the problems of insufficient durability of mite-repelling function and reduced mite-repelling effect after washing in existing technologies.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a mite-proof and feather-proof fabric, the fabric comprising: Outer layer: It adopts a satin weave with a weft density of 150-170 threads / inch, and has a high-density feather-proof structure; Middle layer: Modified polyester fibers containing embedded acaricides, woven in a honeycomb structure with a weft density of 110-130 threads / inch, to provide acaricide protection. Inner layer: Utilizes a twill weave to enhance the fabric's softness and breathability; The fabric is treated with a functional treatment liquid, which comprises components in the following mass concentration ranges: Anti-mite microcapsules: 50-70 g / L; Modified waterborne polyurethane: 40–60 g / L; Nano-silica particles: 4-6 g / L; Silicone softener: 15-25 g / L; Low-fluorine polytetrafluoroethylene emulsion: 10-20 g / L; Silver ion antibacterial agent: 5-10 g / L.

[0007] Preferably, the wall material of the anti-mite microcapsule includes chitosan and polylactic acid, the mass ratio of chitosan to polylactic acid is 65:35 to 75:25, the particle size of the microcapsule is 2 to 4 μm, and the mite repellent is neem oil or citronella oil.

[0008] Preferably, the modified polyester fiber is prepared by melt spinning, and the mite repellent is embedded in the fiber at a ratio of 1.0% to 2.5%, and the polyester fiber has anti-mite, antibacterial and wash-resistant functions.

[0009] Preferably, the modified waterborne polyurethane in the functional treatment liquid contains 2% to 5% fluorinated units and 4 to 6 g / L of nanoparticles, which are used to form a dense and flexible protective film on the fabric surface.

[0010] This invention also provides a method for processing mite-proof and feather-proof fabric, comprising the following steps: S1. Prepare anti-mite microcapsules by encapsulating the mite repellent with chitosan and polylactic acid double-wall material to form microcapsules with a particle size of 2-4 μm. S2. Prepare a functional treatment solution by mixing the anti-mite microcapsules with modified waterborne polyurethane, nano-silica particles, organosilicon softener, waterproofing components and antibacterial components to form a treatment solution. S3. Pre-treat the fabric: Immerse the fabric in a treatment solution containing 1-3 g / L of cellulase, remove surface impurities, and then rinse. S4. Perform functional treatment on the fabric by immersing the fabric in the functional treatment solution and drying it. S5. Set the shape of the greige fabric by treating it at 150-170℃ for 60-90 seconds; S6. Finishing: Enhance fabric performance through calendering and antistatic treatment.

[0011] Preferably, step S1 includes the following steps: To prepare the wall material solution, chitosan was dissolved in a 0.8%–1.2% acetic acid solution and stirred to form a homogeneous solution. Add the mite repellent to the wall material solution to form an emulsion, and then add the gelatin solution and stir for 25–35 minutes. Add 0.8–1.2 g of polylactic acid granules to the emulsion and ultrasonically disperse for 8–12 minutes, then add 0.4–0.6 mL of glutaraldehyde crosslinking agent and react for 1.5–2.5 hours; The centrifuged product was washed 3-5 times with deionized water and vacuum dried to prepare anti-mite microcapsules.

[0012] Preferably, S2 includes: The functional treatment liquid has a pH value of 5.5 to 6.5 and a viscosity of 60 to 80 mPa·s, and is dispersed and mixed by ultrasonic treatment; Ultrasonic processing includes frequencies of 20–30 kHz and power of 200–300 W.

[0013] Preferably, S3 includes: Immerse the fabric in a solution containing 1–3 g / L cellulase and 0.8–1.2 g / L wetting agent, and treat at 45–55°C for 25–35 minutes. Rinse the fabric with deionized water 2 to 4 times until all surface impurities are removed. After air-drying or oven-drying the greige fabric, it is ready for use.

[0014] Preferably, S4 includes: Impregnation with functional treatment liquid involves immersing the fabric in the functional treatment liquid and applying uniform pressure through rollers to control the roll residue rate to 70%–80%. Dry the fabric by drying it at 110-120℃ for 3-5 minutes.

[0015] Preferably, S5 includes: The fabric is calendered at 170–190℃ with a pressure of 70–90 MPa for 15–25 seconds. Spray with an antistatic solution of 4-6 g / L and let it stand at room temperature to dry for 20-30 minutes.

[0016] This invention provides a mite-proof and down-proof fabric and its processing method. It has the following beneficial effects: 1. This invention endows fabrics with excellent mite-repellent function and highly efficient down-repellent properties through the long-lasting sustained release of anti-mite microcapsules and the dense protective film of modified waterborne polyurethane. The mite-repellent ingredients in the microcapsules are continuously released, achieving a mite-repellent rate of ≥95%. Simultaneously, the high-density structure and functional treatment liquid effectively prevent the penetration of the filling material, with a down penetration rate of ≤3 particles / 10cm. 2 .

[0017] 2. The composite wall material design of the microcapsules and the functional layer treatment on the fiber surface significantly improve the washability of the fabric, maintaining ≥90% of its function after 50 household washes. Simultaneously, the antibacterial agents, softeners, and waterproofing components in the treatment solution work synergistically, giving the fabric multiple properties including antibacterial, waterproof, and softness, meeting the comprehensive needs of high-end textiles.

[0018] 3. Combining optimized processing techniques, the fabric of this invention achieves uniform adhesion of functional components and stable performance through efficient steps such as padding, drying, calendering, and antistatic treatment. The process design is highly compatible, requiring no additional equipment modifications, and is suitable for existing production lines, possessing extremely high promotional value and industrial production potential. Attached Figure Description

[0019] Figure 1 This is a flowchart of the method of the present invention. Detailed Implementation

[0020] The technical solutions in 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.

[0021] Please see the appendix Figure 1 This invention provides a mite-proof and down-proof fabric, comprising: Outer layer: It adopts a satin weave with a weft density of 150-170 threads / inch, which has a high-density down-proof structure. The satin weave design of the outer layer not only improves the down-proof performance of the fabric, but also provides the fabric with a superior surface finish, making it more suitable for high-end clothing and home textile applications. Middle layer: Modified polyester fibers containing embedded mite repellent, woven in a honeycomb structure with a weft density of 110-130 threads / inch, to provide mite protection. The honeycomb design of the middle layer enhances mite protection while maintaining good breathability, significantly improving the fabric's hygiene and wearing comfort. Inner layer: The twill weave enhances the softness and breathability of the fabric. The twill weave structure of the inner layer makes the fabric softer and more comfortable, meeting the needs of direct contact with the human body and enhancing the user experience. The fabric is treated with a functional finishing solution, which includes components in the following mass concentration ranges: Anti-mite microcapsules: 50-70g / L. The long-lasting release properties of the microcapsules ensure a long-lasting anti-mite effect, maintaining effective mite-repelling ability even after multiple washes. Modified waterborne polyurethane: 40-60 g / L. Modified waterborne polyurethane is used to give fabrics excellent down protection without affecting breathability and softness. Nano silica particles: 4-6 g / L. The nano particles further enhance the physical protection of the fabric, making it more durable and extending its service life. Silicone softener: 15-25g / L. The softener improves the fabric hardening problem that may be caused by functional treatment, and provides the fabric with a high-end soft touch. Low-fluorine polytetrafluoroethylene emulsion: 10-20g / L. Low-fluorine polytetrafluoroethylene emulsion can give fabrics good waterproof and stain-resistant properties, which are suitable for high-performance needs in a variety of scenarios. Silver ion antibacterial agent: 5-10g / L. Silver ion antibacterial agent can effectively inhibit bacterial growth and further improve the hygiene performance of fabric.

[0022] Please see the appendix Figure 1 In a preferred embodiment of the present invention, the wall material of the anti-mite microcapsules comprises chitosan and polylactic acid, with a mass ratio of chitosan to polylactic acid of 65:35 to 75:25. The microcapsule particle size is 2 to 4 μm, and the mite repellent is neem oil or citronella oil. Chitosan provides excellent antibacterial and repellent effects while increasing the flexibility of the wall material and preventing microcapsule rupture. Polylactic acid enhances the structural strength of the wall material, enabling the microcapsules to remain stable under high temperature or mechanical action. The composite wall material not only improves the microcapsule's performance but also enhances its overall performance. The mechanical strength and durability of the product also provide an auxiliary antibacterial effect during the mite-repellent process, extending the release time of the mite repellent. Neem oil contains active ingredients with repellent properties (such as azadirachtin), and its low toxicity and broad-spectrum mite-repellent properties make it a preferred ingredient. Citronella oil is rich in volatile active substances such as citral, which achieve a repellent effect by interfering with the physiological activities of mites. Natural mite repellents are safe and environmentally friendly, harmless to the human body, and have good volatility, which can continuously release mite-repellent ingredients to achieve long-lasting protection.

[0023] Please see the appendix Figure 1 In a preferred embodiment of the present invention, the modified polyester fiber is prepared by melt spinning. The mite repellent is embedded in the fiber at a ratio of 1.0% to 2.5%, and the polyester fiber has anti-mite, antibacterial, and wash-resistant functions. The mite repellent is uniformly embedded in the fiber during the fiber forming process and gradually releases active ingredients (such as azadirachtin or citral) through the microporous structure of the fiber surface. The embedding depth and release rate are affected by the fiber micropore diameter, temperature and humidity, and fiber deformation to ensure continuous release and long-lasting effect. The modified polyester fiber enhances the antibacterial properties of the fiber, and the bacterial inhibition rate can reach 99%, further improving the hygienic properties of the fabric. The mite repellent forms a stable bond with the fiber molecular structure through physical embedding and is not easily detached during the washing process. At the same time, the dispersion and fixation of the mite repellent in the melt spinning process avoids the defect of easy detachment due to post-treatment adhesion.

[0024] Please see the appendix Figure 1 In a preferred embodiment of the present invention, the modified waterborne polyurethane in the functional treatment liquid contains 2% to 5% fluorinated units and 4 to 6 g / L nanoparticles to form a dense and flexible protective film on the fabric surface. The fluorinated units (2% to 5%) are block polymers of hexafluoropropylene or tetrafluoroethylene, chemically bonded to the hard segments. These fluorinated units have low surface energy and high hydrophobicity, effectively preventing the penetration of water molecules, fillers, or microorganisms. The nanoparticles (4 to 6 g / L) are distributed between the polyurethane molecular chains, such as silica (SiO2) or alumina (Al2O3), filling the microporous structure in the coating and improving the density and abrasion resistance of the film. The fluorinated units provide excellent hydrophobicity and oil resistance, while the nanoparticles enhance the mechanical properties of the film. The combination of these two components forms a dense and flexible protective film, effectively preventing down from escaping and improving the fabric's durability.

[0025] Please see the appendix Figure 1 The present invention also includes a method for processing a mite-proof and down-proof fabric, comprising the following steps: S1. Preparation of anti-mite microcapsules: The mite repellent is encapsulated by chitosan and polylactic acid double-wall material to form microcapsules with a particle size of 2-4 μm. The chitosan and polylactic acid double-wall material provides mechanical strength and sustained-release capability of the microcapsules. The mite repellent is uniformly distributed by the microcapsules and slowly releases the active ingredients during subsequent processing and use. The resulting microcapsules have uniform particle size, are resistant to mechanical action and high temperature, and can effectively extend the duration of the anti-mite function to meet long-term mite prevention needs. S2. Prepare a functional treatment liquid by mixing anti-mite microcapsules with modified waterborne polyurethane, nano silica particles, silicone softener, waterproofing components and antibacterial components to form a treatment liquid. The treatment liquid is uniformly and stably prepared and can take into account multiple functions such as anti-mite, anti-feather, waterproofing and antibacterial, while maintaining good softness and breathability. S3. Pre-treatment of the fabric: The fabric is immersed in a treatment solution containing 1-3 g / L of cellulase to remove surface impurities and then rinsed. Cellulase decomposes the sizing and natural impurities on the fiber surface, making the fiber surface cleaner and increasing the adhesion of the treatment solution. The pre-treated fabric surface is clean and structurally stable, providing ideal adhesion conditions for subsequent functional treatment and significantly improving the treatment effect. S4. Perform functional treatment on the greige fabric by immersing it in a functional treatment solution and then drying it. The immersion process ensures that the functional treatment solution is evenly adhered to the fiber surface. The drying process promotes the solidification of the components of the treatment solution and forms a protective film on the fiber surface. The functional layer of the greige fabric is uniform and firmly adhered, and the fabric obtains good mite-proof, down-proof and waterproof properties. S5. Set the fabric by treating it at 150-170℃ for 60-90 seconds. The setting process further solidifies the functional layer through high temperature, while enhancing the dimensional stability and wrinkle resistance of the fibers. The functionality of the fabric is further consolidated, and it has stronger durability and dimensional stability, meeting the needs of high-performance fabrics. S6. Finishing: The fabric performance is improved through calendering and antistatic treatment. Calendering, through high temperature and high pressure, makes the fiber surface smoother and reduces the risk of down penetration. Antistatic treatment forms a conductive layer on the fiber surface to prevent static electricity accumulation. Finishing improves the fabric's appearance, texture, down-proof performance, and antistatic properties, making the fabric more suitable for high-end apparel and home textiles.

[0026] Please see the appendix Figure 1 In a preferred embodiment of the present invention, S1 includes the following steps: To prepare the wall material solution, chitosan was dissolved in a 0.8%–1.2% acetic acid solution and stirred to form a homogeneous solution. The acetic acid solution dissolves the chitosan molecules through dissociation, giving them a positive charge and excellent film-forming properties. The homogeneity of the wall material solution lays the foundation for subsequent emulsification and microencapsulation. The acaricide is added dropwise to the wall material solution to form an emulsion, and then a gelatin solution is added and stirred for 25-35 minutes. The acaricide is evenly dispersed in the chitosan solution through emulsification to form a core-shell structure. The gelatin acts as an auxiliary wall material to enhance the stability of the emulsion and prevent the emulsion droplets from agglomerating or breaking. Add 0.8–1.2 g of polylactic acid (PLA) particles to the emulsion and ultrasonically disperse for 8–12 minutes. Then, add 0.4–0.6 mL of glutaraldehyde crosslinking agent and react for 1.5–2.5 hours. The PLA particles combine with chitosan to form a composite wall material, increasing the mechanical strength of the wall material. The ultrasonic dispersion process effectively breaks down PLA agglomerates, ensuring their uniform distribution in the emulsion and improving the stability of the emulsion and the strength of the subsequent microcapsules. The centrifuged product was washed 3-5 times with deionized water and vacuum dried to prepare anti-mite microcapsules. Glutaraldehyde reacted with the amino groups in chitosan molecules to form a cross-linked network structure, giving the wall material excellent mechanical strength and chemical stability. The curing process made the shell structure of the microcapsules more compact.

[0027] Please see the appendix Figure 1 In a preferred embodiment of the present invention, S2 includes: The functional treatment liquid has a pH of 5.5–6.5 and a viscosity of 60–80 mPa·s. The mixed liquid is dispersed by ultrasonic treatment. The ultrasonic treatment includes 20–30 kHz and a power of 200–300 W. Polylactic acid particles are physically dispersed and uniformly distributed in the emulsion, combining with chitosan and gelatin to form a composite wall material. The cavitation effect of ultrasound breaks up particle agglomerates, ensuring uniform particle size distribution and synergistic effect with chitosan. Through ultrasonic dispersion, polylactic acid particles are uniformly distributed, and the mechanical strength and washability of the microcapsule wall material are significantly enhanced, while the particle size distribution is more stable.

[0028] Please see the appendix Figure 1 In a preferred embodiment of the present invention, S3 includes: The fabric is immersed in a solution containing 1–3 g / L cellulase and 0.8–1.2 g / L wetting agent, and treated at 45–55°C for 25–35 minutes. Cellulase decomposes impurities such as sizing and wax on the fiber surface through enzymatic hydrolysis, converting them into soluble small molecules that are easy to remove. Wetting agent reduces the surface tension of the solution, enhances the wetting effect of the solution on the fabric, and ensures full contact between the enzyme and the fiber. After immersion treatment, impurities on the fabric surface are effectively decomposed and peeled off, the fibers are cleaner, and the adsorption effect of subsequent functional treatment solutions is enhanced. Rinse the fabric with deionized water 2 to 4 times until all surface impurities are removed. Deionized water can effectively remove residual enzymes, dissolved impurities and wetting agents from the surface of the fabric. Through multiple rinsing, it is ensured that the components in the solution that may affect subsequent processing are completely removed. The surface of the fabric after rinsing is free of residual impurities and the smoothness is significantly improved, providing an ideal fiber surface condition for subsequent padding processing. After air-drying or oven-drying, the greige fabric is ready for use. The dried greige fabric has a clean and flat surface without obvious wrinkles or damage. The fiber surface has good adsorption properties, providing a high-quality base material for subsequent functional processing.

[0029] Please see the appendix Figure 1 In a preferred embodiment of the present invention, S4 includes: The functional treatment solution is applied by immersing the fabric in the solution and applying uniform pressure through rollers, controlling the residual rate to be 70%–80%. During the immersion process, the functional treatment solution is evenly penetrated into the fiber surface and interfiber spaces through capillary action. The uniform pressure applied by the rollers squeezes out excess solution, ensuring that the amount of liquid adhering to the fiber surface is moderate, thereby optimizing the use efficiency of the treatment solution and reducing waste. Through the immersion process, the functional treatment solution can be evenly adhered to the surface and interior of the fabric, ensuring consistent distribution of functional components during subsequent processing, while avoiding excessive residue that may affect subsequent performance. The treated fabric is dried at 110–120°C for 3–5 minutes. During the drying process, the functional treatment liquid on the surface of the fabric evaporates moisture rapidly, while the modified waterborne polyurethane and other components are cured by heat, forming a dense functional protective film. Precise control of temperature and time can avoid heat damage to the fibers caused by high temperature, while ensuring the adhesion and stability of functional components. The surface treatment layer of the dried fabric is uniform and structurally stable, and the functional components are firmly attached, giving the fabric excellent anti-mite, anti-feather, waterproof and antibacterial properties.

[0030] Please see the appendix Figure 1 In a preferred embodiment of the present invention, S5 includes: The fabric is calendered at 170–190℃ and 70–90 MPa for 15–25 seconds. Under high temperature and high pressure, the functional treatment layer on the fiber surface forms a continuous and dense protective film through melting and reshaping. During calendering, the fibers are more tightly packed, reducing surface porosity and thus improving down protection. After calendering, the fabric surface is smooth and flat, with significantly enhanced down protection, while also providing a more uniform base for subsequent antistatic treatment. An antistatic solution with a concentration of 4–6 g / L is sprayed on and left to dry at room temperature for 20–30 minutes. The antistatic agent adheres to the fabric surface through physical adsorption or chemical bonding, forming a conductive layer and reducing the surface resistance of the fibers. During the drying process, the components of the antistatic solution are evenly distributed on the fiber surface, enhancing the antistatic properties. After antistatic treatment, the surface resistance of the fabric is significantly reduced, and static electricity accumulation during wear is significantly reduced, improving the comfort and practicality of the fabric.

[0031] To better understand the present invention, the above content will be described in detail below with reference to specific embodiments.

[0032] Example 1: Treatment method without added anti-mite microcapsules Processing method: The functional treatment liquid does not contain anti-mite microcapsules and consists only of modified waterborne polyurethane, waterproofing agent, softener and antibacterial agent; it is subjected to padding, drying, calendering and antistatic treatment according to the same process.

[0033] Test results: Anti-mite performance: The fabric did not show any mite-repelling effect; the mite survival rate was 85%. Down penetration performance: 5 down particles / 10cm 2 Its feather protection effect is average; Wash resistance: The functional coating retains approximately 80% after 50 washes.

[0034] Beneficial effects: The fabric has some down-proof, waterproof and antibacterial properties, but lacks mite-proof properties and is not durable enough.

[0035] Example 2: Processing method for adding ordinary microcapsules Processing method: Ordinary single-wall microcapsules (chitosan monolayer encapsulated acaricide) were added to the functional treatment solution, and the remaining components were the same as in Example 1; Process using the same procedure.

[0036] Test results: Anti-mite performance: The initial test showed an anti-mite rate of 70%, but this dropped to 40% after 10 washes. Down penetration performance: 4 down particles / 10cm 2 Its feather protection performance has been improved; Washability: The coating retention rate is 85%, but the mite repellent is washed away relatively quickly.

[0037] Beneficial effects: The mite-proof performance has been improved, but the durability is insufficient; the feather-proof performance has been slightly improved, but the mite-repellent function is lost relatively quickly.

[0038] Example 3: The method of the present invention (addition of composite microcapsules) Processing method: The functional treatment solution contains dual-wall anti-mite microcapsules (chitosan and polylactic acid composite wall material), and the remaining components are modified waterborne polyurethane, waterproofing agent, softener and antibacterial agent; The process according to the present invention includes pretreatment, functional treatment liquid impregnation and padding, drying, calendering and antistatic finishing.

[0039] Test results: Anti-mite performance: The initial test showed an anti-mite rate of 95%, which remained at 90% after 50 washes; Down penetration performance: 2 down particles / 10cm 2 It is significantly superior to other embodiments; Washability: The functional coating retains up to 95% of its properties.

[0040] Beneficial effects: The fabric exhibits superior mite-proof, down-proof, and multi-functional properties, with significantly enhanced functionality and durability, meeting the demands of the high-end market.

[0041] Comparative Experiment 1: Experimental Design of Anti-mite Performance Experimental objective: To verify the anti-mite performance of the present invention (experimental group).

[0042] Experimental setup Experimental group: Experimental group (this invention): Anti-mite and down-proof fabric treated with a functional treatment liquid containing composite wall material microcapsules. The composite wall material (chitosan + polylactic acid) has excellent sustained-release function, providing a long-lasting mite-repellent effect.

[0043] Control group: Control group 1: Fabrics without added anti-mite microcapsules, treated only with modified waterborne polyurethane coating.

[0044] Control group 2: Fabric treated with single-wall microcapsules (chitosan monolayer).

[0045] Experimental steps Mite inoculation: Mites were evenly inoculated onto fabric samples from both the experimental and control groups, with an initial inoculation density of 200 ± 10 mites / cm². 2 .

[0046] The samples were placed in an incubator with a humidity of 75% ± 5% and a temperature of 25℃ ± 1℃.

[0047] Mite-repelling efficacy test: Initial results: After 7 days of cultivation, the number of surviving mites was counted, and the mite prevention rate was calculated.

[0048] Durability test: After the sample was subjected to 10, 20 and 50 standard washes, the above culture and statistical steps were repeated.

[0049] Statistical methods: Three samples were tested in each group, and three independent areas were tested for each sample. The mite survival rate was calculated and the mite prevention rate was obtained.

[0050] Mite prevention rate = [(Initial number of mites - number of surviving mites) / initial number of mites] × 100%.

[0051] The comparative experimental data are shown in Table 1: Table 1. Results of mite-proof performance test From the data in Table 1, we can obtain: Experimental group results description: Initial effect: The mite prevention rate of the experimental group reached 97%, which was better than that of control group 1 and control group 2; Durability: After 50 washes, the mite prevention rate of the experimental group still remained at 90%, showing excellent long-lasting mite repellency.

[0052] Description of results from the control group Control group 1 (without microcapsules): The anti-mite effect was almost negligible, and the anti-mite rate remained at 7% to 12%, with no significant change.

[0053] Control group 2 (ordinary microcapsules): The initial mite prevention rate was 70%, but the durability was poor. After 50 washes, the mite prevention rate dropped to 35%, and the mite-repelling function rapidly declined.

[0054] Comparative Experiment 2: Experimental Design of Feather Protection Performance Experimental objective: To verify the advantages of the present invention (experimental group) in feather protection performance.

[0055] Experimental setup Experimental group: Experimental group (this invention): Anti-mite and anti-feather fabric treated with modified waterborne polyurethane coating (containing fluorinated units and nanoparticles) and optimized processing technology.

[0056] Control group: Control group 1: Fabrics with enhanced down-proof properties through high-density satin weave, without any functional treatments.

[0057] Control group 2: The treatment method used was a conventional waterborne polyurethane coating, without the addition of fluorinated units or nanoparticles.

[0058] Experimental steps Down filling: A standard down sample was filled onto the back of the fabric at a density of 50 g / m². 2 ; The fabric surface is fixed on a closed test frame, with a front force area of ​​10cm². 2 .

[0059] Apply pressure: According to GB / T12705-2009 standard, a fixed pressure of 10 kPa is applied to the test frame and maintained for 5 minutes.

[0060] Penetration particle count: Collect and count the down particles that penetrate the fabric on the front side; The penetration amount was recorded in the initial test and after multiple washes (10, 20, and 50 times).

[0061] Statistical methods: Each group tested 3 samples, and each sample was tested 3 times independently. The average value was recorded.

[0062] The comparative experimental data are shown in Table 2: Table 2 Results of Feather Protection Performance Test From the data in Table 2, we can obtain: Initial results of the experimental group: The experimental group had the lowest down penetration, only 1 feather / 10cm. 2The feather protection rate reached 99%, which was superior to the control group; in the durability test, after 50 washes, the penetration rate of the experimental group increased to 3 seeds / 10cm. 2 The feather protection rate remains at 97%.

[0063] Description of results from the control group Control group 1 (high-density weave, no coating): initial penetration was higher, at 7 beads / 10cm. 2 Initial feather protection rate: 93%; after 50 washes, feather protection performance decreased, and penetration increased to 15 feathers / 10cm. 2 .

[0064] Control group 2 (ordinary waterborne polyurethane coating): initial penetration rate was 4 particles / 10cm 2 96% feather protection rate; after 50 washes, feather penetration increased to 12 feathers / 10cm. 2 Its feather protection performance has decreased significantly.

[0065] Comparative Experiment 3: Durability Experiment Design Experimental objective: To verify the functional retention rate of the fabric of the present invention after multiple washes.

[0066] Experimental setup Experimental group: Experimental group (this invention): Fabric treated with composite wall material microcapsules and modified waterborne polyurethane coating.

[0067] Control group: Control group 1: Fabrics without functional coating treatment, relying solely on high-density weaving structure.

[0068] Control group 2: Fabrics using ordinary waterborne polyurethane coatings and single-wall microcapsules.

[0069] Experimental steps Sample preparation: The experimental group and control group samples were cut into 10cm×10cm square test samples, and 3 samples were prepared for each group.

[0070] Washing treatment: According to GB / T8629-2017 standard, a household washing environment was simulated (temperature 40℃, detergent concentration 5g / L, stirring speed 40rpm).

[0071] The number of washes were set to 10, 20, and 50 times respectively.

[0072] Performance testing: Anti-mite performance: Refer to the anti-mite performance test method to test the mite survival rate after washing and calculate the anti-mite rate.

[0073] Down protection performance: Based on the test method for down protection performance, the amount of down penetration after washing is tested.

[0074] Coating adhesion rate: The retention rate (%) of the fabric coating before and after washing was determined by gravimetric method.

[0075] Data Records: The test results for each sample were averaged, and the trend of change was recorded.

[0076] The comparative experimental data are shown in Table 3: Table 3. Durability Test Results From the data in Table 3, we can obtain: Results of the experimental group: Anti-mite performance: The initial anti-mite rate of the experimental group was 97%, and it remained at 90% after 50 washes, demonstrating excellent long-lasting anti-mite ability; Down protection performance: Down penetration increased from an initial 1 feather / 10cm. 2 Increase to 3 grains / 10cm 2 The coating adhesion rate was still far lower than that of the control group; after 50 washes, the coating adhesion rate remained at 95%, demonstrating extremely high durability.

[0077] Description of results from the control group Control group 1 (no coating): No anti-mite function, down penetration increased from the initial 7 down particles / 10cm. 2 Increase to 15 grains / 10cm 2 It has no durability whatsoever.

[0078] Control group 2 (ordinary coating and microcapsules): Initial mite prevention rate was 70%, but decreased to 35% after 50 washes; down penetration decreased from an initial 4 down particles / 10cm. 2 Increase to 12 grains / 10cm 2 The coating adhesion rate dropped from 95% to 65%, and the function deteriorated rapidly.

[0079] 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. A mite-proof and feather-proof fabric, characterized in that, The fabric includes: Outer layer: It adopts a satin weave with a weft density of 150-170 threads / inch, and has a high-density feather-proof structure; Middle layer: Modified polyester fibers containing embedded acaricides, woven in a honeycomb structure with a weft density of 110-130 threads / inch, to provide acaricide protection. Inner layer: Utilizes a twill weave to enhance the fabric's softness and breathability; The fabric is treated with a functional treatment liquid, which comprises components in the following mass concentration ranges: Anti-mite microcapsules: 50-70 g / L; Modified waterborne polyurethane: 40–60 g / L; Nano-silica particles: 4-6 g / L; Silicone softener: 15-25 g / L; Low-fluorine polytetrafluoroethylene emulsion: 10-20 g / L; Silver ion antibacterial agent: 5-10 g / L; The wall material of the anti-mite microcapsule includes chitosan and polylactic acid, with a mass ratio of chitosan to polylactic acid of 65:35 to 75:

25. The microcapsule has a particle size of 2 to 4 μm, and the mite repellent is neem oil or citronella oil. The modified waterborne polyurethane in the functional treatment liquid contains 2% to 5% fluorinated units and 4 to 6 g / L of nanoparticles, which are used to form a dense and flexible protective film on the fabric surface.

2. The anti-mite and anti-feather fabric according to claim 1, characterized in that, The modified polyester fiber is prepared by melt spinning, and the mite repellent is embedded in the fiber at a ratio of 1.0% to 2.5%. The polyester fiber has anti-mite, antibacterial and wash-resistant functions.

3. A method for processing a mite-proof and feather-proof fabric, characterized in that, Using the anti-mite and anti-feather fabric according to any one of claims 1-2 includes the following steps: S1. Prepare anti-mite microcapsules by encapsulating the mite repellent with chitosan and polylactic acid double-wall material to form microcapsules with a particle size of 2-4 μm. S2. Prepare a functional treatment solution by mixing the anti-mite microcapsules with modified waterborne polyurethane, nano-silica particles, organosilicon softener, waterproofing components and antibacterial components to form a treatment solution. S3. Pre-treat the fabric: Immerse the fabric in a treatment solution containing 1-3 g / L of cellulase, remove surface impurities, and then rinse. S4. Perform functional treatment on the fabric by immersing the fabric in the functional treatment solution and drying it. S5. Set the shape of the greige fabric by treating it at 150-170℃ for 60-90 seconds; S6. Finishing: Enhance fabric performance through calendering and antistatic treatment.

4. The processing method of the mite-proof and feather-proof fabric according to claim 3, characterized in that, S1 includes the following steps: To prepare the wall material solution, chitosan was dissolved in a 0.8%–1.2% acetic acid solution and stirred to form a homogeneous solution. Add the mite repellent to the wall material solution to form an emulsion, and then add the gelatin solution and stir for 25–35 minutes. Add 0.8–1.2 g of polylactic acid granules to the emulsion and ultrasonically disperse for 8–12 minutes, then add 0.4–0.6 mL of glutaraldehyde crosslinking agent and react for 1.5–2.5 hours; The centrifuged product was washed 3-5 times with deionized water and vacuum dried to prepare anti-mite microcapsules.

5. The processing method of the mite-proof and feather-proof fabric according to claim 3, characterized in that, S2 includes: The functional treatment liquid has a pH value of 5.5 to 6.5 and a viscosity of 60 to 80 mPa·s, and is dispersed and mixed by ultrasonic treatment; Ultrasonic processing includes frequencies of 20–30 kHz and power of 200–300 W.

6. The processing method of the mite-proof and feather-proof fabric according to claim 3, characterized in that, S3 includes: Immerse the fabric in a solution containing 1–3 g / L cellulase and 0.8–1.2 g / L wetting agent, and treat at 45–55°C for 25–35 minutes. Rinse the fabric with deionized water 2 to 4 times until all surface impurities are removed. After air-drying or oven-drying the greige fabric, it is ready for use.

7. The processing method of the mite-proof and feather-proof fabric according to claim 3, characterized in that, S4 includes: The fabric is immersed in a functional treatment solution, and uniform pressure is applied through rollers to control the roll residue rate to 70%–80%. Dry the fabric by drying it at 110-120℃ for 3-5 minutes.

8. The processing method of the mite-proof and feather-proof fabric according to claim 3, characterized in that, S5 includes: The fabric is calendered at 170–190℃ with a pressure of 70–90 MPa for 15–25 seconds. Spray with an antistatic solution of 4-6 g / L and let it stand at room temperature to dry for 20-30 minutes.

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