Anti-mite down-proof fabric and processing method thereof

Abstract

The invention relates to the technical field of textile materials, and discloses an anti-mite down-proof fabric and a processing method thereof.The fabric comprises an outer layer, an inner layer and an outer layer, the outer layer is of a high-density down-proof structure, the satin weave is adopted, and the weft density of the outer layer is 150-170 pieces per inch; the middle layer contains modified polyester fibers embedded with a mite repellent, is woven in a honeycomb structure, has the weft density of 110-130 pieces per inch, and is used for providing an anti-mite function; the inner layer adopts twill weave, so that the softness and the air permeability of the fabric are improved; the fabric is treated by a functional treatment solution, and the functional treatment solution comprises the following components in mass concentration range: 50-70g / L of anti-mite microcapsules; and 40-60 g / L of modified waterborne polyurethane. Through the slow-release structure of the anti-mite microcapsules, the modified waterborne polyurethane coating and the optimized processing technology, long-acting mite prevention, efficient feather prevention, softness, breathability and function durability of the fabric are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of textile materials, in particular to an anti-mite and anti-feather fabric and a processing method thereof. Background Art

[0002] Anti-mite and anti-feather fabric is a functional textile material that combines the functions of repelling mites and repelling feathers, and is widely used in the fields of high-end home textiles and clothing. This type of fabric usually achieves the function of repelling mites by applying a functional coating on the textile substrate or by fiber modification, while enhancing the anti-feather performance through high-density tissue structure, functional treatment liquid or surface treatment technology. The processing method generally includes the preparation of functional treatment liquid, padding treatment of fabrics, heat setting and finishing processes to give the fabric multiple properties.

[0003] Existing anti-mite and anti-feather fabrics are usually prepared by combining surface coating with high-density weaving process. By coating the functional coating containing a mite repellent on the surface of the fabric, the acarid repellent is continuously released during use to achieve the effect of repelling mites. At the same time, the use of satin or high-weft density weaving structure can effectively enhance the anti-feather performance of the fabric. This type of fabric has a good mite repellent effect and filler closure, and the processing technology is relatively mature, and the application field of the product is constantly expanding.

[0004] In the existing technology, the mite repellent function mostly relies on the surface coating, and the release rate of the mite repellent is difficult to stably control, resulting in poor functional durability. The mite repellent effect is reduced after too many washings. In addition, simply relying on a high-density woven structure to achieve anti-feather performance, although it has a certain effect, the increase in weaving density will reduce the air permeability and softness of the fabric, 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 is difficult to meet the requirements of high-performance textiles. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an anti-mite and anti-feather fabric and a processing method thereof, which solves the problems in the prior art of insufficient durability of the mite repellent function and reduced mite repellent effect after washing.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an anti-mite and anti-feather fabric, the fabric comprising: Outer layer: Satin weave, with a weft density of 150-170 threads / inch, and a high-density anti-feather structure; Middle layer: modified polyester fiber with embedded mite repellent, woven with honeycomb structure, with a weft density of 110 to 130 strands per inch, to provide anti-mite function; Inner layer: Twill weave is used to improve the softness and breathability of the fabric; The fabric is treated with a functional treatment liquid, and the functional treatment liquid includes components in the following mass concentration ranges: Anti-mite microcapsules: 50-70g / L; Modified waterborne polyurethane: 40-60g / L; Nano-silicon dioxide particles: 4-6 g / L; Silicone softener: 15-25g / L; Low-fluorine polytetrafluoroethylene emulsion: 10-20g / L; Silver ion antibacterial agent: 5-10g / L.

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

[0008] Preferably, 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 washing-resistant functions.

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

[0010] The present invention also provides a method for processing anti-mite and anti-feather fabrics, comprising the following steps: S1, preparing anti-mite microcapsules, encapsulating the mite repellent with chitosan and polylactic acid double-walled materials to form microcapsules with a particle size of 2 to 4 μm; S2, preparing a functional treatment liquid, mixing the anti-mite microcapsules with modified waterborne polyurethane, nano-silicon dioxide particles, organic silicon softener, waterproof component and antibacterial component to form a treatment liquid; S3, pre-treating the grey cloth, immersing the grey cloth in a treatment solution containing 1 to 3 g / L of cellulase, removing surface impurities and then rinsing; S4, performing functional treatment on the grey cloth, dipping the grey cloth into the functional treatment liquid and drying it; S5. Shape the grey cloth at 150-170°C for 60-90 seconds; S6, finishing, improving fabric performance through calendering and antistatic treatment.

[0011] Preferably, the S1 comprises the following steps: Prepare the wall material solution, dissolve chitosan in 0.8% to 1.2% acetic acid solution and stir to form a uniform solution; Add the mite repellent dropwise into the wall material solution to form an emulsion, and add the gelatin solution and stir for 25 to 35 minutes; Add 0.8-1.2 g of polylactic acid particles to the emulsion and ultrasonically disperse for 8-12 minutes, then dropwise add 0.4-0.6 mL of glutaraldehyde crosslinking agent and react for 1.5-2.5 hours; The product was separated by centrifugation, washed with deionized water for 3 to 5 times 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 the mixed liquid is dispersed by ultrasonic treatment; The ultrasonic treatment includes 20-30kHz and a power of 200-300W.

[0013] Preferably, S3 includes: The grey cloth is immersed in a solution containing 1-3 g / L of cellulase and 0.8-1.2 g / L of a wetting agent, and the treatment is maintained at 45-55° C. for 25-35 minutes; Rinse the grey cloth with deionized water 2 to 4 times until the surface impurities are completely removed; Air-dry or tumble dry the grey fabric for later use.

[0014] Preferably, S4 includes: Dipping the functional treatment liquid, immersing the grey cloth in the functional treatment liquid, applying uniform pressure through rollers, and controlling the rolling rate to be 70% to 80%; Drying the grey cloth: drying the treated grey cloth at 110-120°C for 3-5 minutes.

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

[0016] The present invention provides an anti-mite and anti-feather fabric and a processing method thereof, which has the following beneficial effects: 1. The present invention endows the fabric with excellent anti-mite function and efficient anti-down performance through the long-term sustained release of anti-mite microcapsules and the dense protective film of modified waterborne polyurethane. The microcapsule anti-mite component is continuously released, and the anti-mite rate is ≥95%. At the same time, the high-density structure and functional treatment liquid are combined to effectively prevent the penetration of fillers, and the down penetration rate is ≤3 grains / 10cm 2 .

[0017] 2. The composite wall material design of microcapsules and the functional layer treatment on the fiber surface significantly improve the washing resistance of the fabric. After 50 home washes, the functional retention rate is ≥90%. At the same time, the antibacterial agent, softener and waterproof component in the treatment liquid work synergistically, and the fabric has multiple properties such as antibacterial, waterproof and soft, meeting the comprehensive needs of high-end textiles.

[0018] 3. Combined with the optimized processing technology, the fabric of the present invention achieves uniform adhesion of functional components and stable performance through efficient steps such as padding, drying, calendering and antistatic treatment. The process design has strong compatibility, does not require additional equipment modification, is suitable for existing production lines, and has extremely high promotion value and industrial production potential. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The present invention is a flow chart of the method. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Please see attached Figure 1 The embodiment of the present invention provides an anti-mite and anti-feather fabric, the fabric comprising: Outer layer: Satin weave with a weft density of 150 to 170 threads per inch, and a high-density anti-feather structure. The satin weave design of the outer layer not only improves the anti-feather performance of the fabric, but also provides the fabric with excellent surface finish, making it more suitable for high-end clothing and home textile applications; Middle layer: modified polyester fiber with embedded mite repellent, woven with honeycomb structure, with a weft density of 110 to 130 strands per inch, to provide anti-mite function. The honeycomb design of the middle layer not only improves the anti-mite performance but also retains good air permeability, significantly improving the fabric's hygiene and wearing comfort; Inner layer: The twill weave structure improves 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 treatment solution, which includes components in the following mass concentration ranges: Anti-mite microcapsules: 50-70g / L. The long-lasting release characteristics of the microcapsules ensure that the anti-mite effect is long-lasting, and it can still maintain effective mite repellent even after multiple washings; Modified waterborne polyurethane: 40-60g / L, modified waterborne polyurethane is used to give fabrics excellent anti-feather properties without affecting breathability and softness; Nano-silicon dioxide particles: 4-6g / L. 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 hardening problem of fabrics that may be caused by functional treatment and provides high-end soft touch to the fabrics. Low-fluorine polytetrafluoroethylene emulsion: 10-20g / L. Low-fluorine polytetrafluoroethylene emulsion can make the fabric have good waterproof and anti-fouling properties, which is suitable for high-performance requirements in various scenarios; Silver ion antibacterial agent: 5-10g / L. Silver ion antibacterial agent can effectively inhibit the growth of bacteria and further improve the hygiene performance of the fabric.

[0022] Please see attached Figure 1 In a preferred embodiment of the present invention, the wall material of the anti-mite microcapsule includes chitosan and polylactic acid, the mass ratio of chitosan to polylactic acid is 65:35-75:25, the particle size of the microcapsule is 2-4 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 to prevent the microcapsule from breaking. Polylactic acid enhances the structural strength of the wall material, so that the microcapsule remains stable under high temperature or mechanical action. The composite wall material not only improves the microcapsule It has mechanical strength and durability, and also provides auxiliary antibacterial effect in the anti-mite process, prolonging the release time of the mite repellent. Neem oil: Contains active ingredients with repellent effect (such as azadirachtin). Its low toxicity and broad-spectrum mite repellent performance make it a preferred ingredient. Citronella oil: Rich in volatile active substances such as citral, it achieves the 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. They can continuously release mite repellent ingredients to achieve long-term protection.

[0023] Please see attached Figure 1 In a preferred embodiment of the present invention, 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 washing-resistant functions. The mite repellent is uniformly embedded in the fiber during the fiber forming process, and the active ingredients (such as azadirachtin or citral) are gradually released through the microporous structure on the fiber surface. The embedding depth and release rate are affected by the fiber micropore diameter, temperature and humidity, and fiber deformation, ensuring the release continuity and long-term 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 combination with the fiber molecular structure through physical embedding and is not easy to fall off due to 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 falling off due to post-processing attachment.

[0024] Please see attached Figure 1 In a preferred embodiment of the present invention, the modified waterborne polyurethane in the functional treatment liquid contains 2% to 5% of fluorinated units and 4 to 6 g / L of nanoparticles, which are used to form a dense and flexible protective film on the surface of the fabric, wherein the fluorinated unit (2% to 5%): a block polymer of hexafluoropropylene or tetrafluoroethylene is used, which is chemically bonded to the hard segment. The fluorinated unit has low surface energy and high hydrophobicity, which can effectively prevent the penetration of water molecules, fillers or microorganisms; Nanoparticles (4 to 6 g / L): Nanoparticles such as silicon dioxide (SiO2) or aluminum oxide (Al2O3) are distributed between the polyurethane molecular chains, filling the microporous structure in the coating, improving the density and wear resistance of the film layer, the fluorinated unit provides excellent hydrophobicity and oil resistance, and the nanoparticles enhance the mechanical properties of the film layer. The combination of the two forms a dense and flexible protective film, which effectively prevents the down from drilling out and improves the durability of the fabric.

[0025] Please see attached Figure 1 The present invention also includes a method for processing anti-mite and anti-feather fabrics, comprising the following steps: S1. Prepare anti-mite microcapsules, wrap the mite repellent with chitosan and polylactic acid double-wall materials to form microcapsules with a particle size of 2 to 4 μm. The chitosan and polylactic acid double-wall materials provide mechanical strength and sustained-release ability for the microcapsules. The mite repellent is evenly distributed through the microcapsule wrapping, and the active ingredients are slowly released during subsequent processing and use. The prepared microcapsules have uniform particle size, are resistant to mechanical action and high temperature, can effectively prolong the duration of the anti-mite function, and meet long-term anti-mite needs; S2, preparing a functional treatment liquid, mixing the anti-mite microcapsules with modified waterborne polyurethane, nano-silicon dioxide particles, silicone softener, waterproof component and antibacterial component to form a treatment liquid, the treatment liquid is uniformly prepared and stable, and can take into account multiple functions such as anti-mite, anti-feather, waterproof, antibacterial, etc., while maintaining good softness and breathability; S3, pre-treating the grey cloth, impregnating the grey cloth with a treatment solution containing 1-3 g / L of cellulase, removing surface impurities and then rinsing, the cellulase decomposes the slurry and natural impurities on the fiber surface, making the fiber surface cleaner, increasing the adhesion of the treatment solution, the surface of the pre-treated grey cloth is clean and the structure is stable, providing ideal adhesion conditions for subsequent functional treatment, and significantly improving the treatment effect; S4, functional treatment is performed on the grey fabric, the grey fabric is dipped into the functional treatment liquid and dried, the dip-padding process ensures that the functional treatment liquid is evenly attached to the fiber surface; the drying process causes the components of the treatment liquid to solidify and forms a protective film on the fiber surface, the grey fabric functional layer is uniform and firmly attached, and the fabric has good anti-mite, anti-feather and waterproof properties; S5. The grey fabric is shaped at 150-170°C for 60-90 seconds. The high temperature during the shaping process further solidifies the functional layer and enhances the dimensional stability and wrinkle resistance of the fiber. The functionality of the fabric is further consolidated, and it has stronger durability and dimensional stability, meeting the needs of high-performance fabrics. S6. Post-finishing improves fabric performance through calendering and anti-static treatment. Calendering treatment makes the fiber surface smoother through high temperature and high pressure, reducing the risk of down penetration; anti-static treatment prevents static electricity accumulation by forming a conductive layer on the fiber surface. Post-finishing improves the appearance texture, anti-down performance and anti-static performance of the fabric, making the fabric more suitable for high-end clothing and home textile fields.

[0026] Please see attached Figure 1 In a preferred embodiment of the present invention, S1 comprises the following steps: Prepare the wall material solution, dissolve chitosan in 0.8% to 1.2% acetic acid solution and stir to form a uniform solution. The acetic acid solution dissolves the chitosan molecules through dissociation, making them positively charged and showing excellent film-forming properties. The uniformity of the wall material solution lays the foundation for subsequent emulsification and microcapsule molding. The mite repellent is added dropwise to the wall material solution to form an emulsion, and the gelatin solution is added and stirred for 25 to 35 minutes. The mite repellent is uniformly dispersed in the chitosan solution through emulsification to form a core-shell structure; gelatin is used as an auxiliary wall material to enhance the stability of the emulsion and prevent the emulsion droplets from agglomerating or rupturing; 0.8-1.2 g of polylactic acid particles are added to the emulsion and ultrasonically dispersed for 8-12 minutes, followed by dropwise addition of 0.4-0.6 mL of glutaraldehyde crosslinking agent for 1.5-2.5 hours, so that the polylactic acid particles are combined with chitosan to form a composite wall material, thereby increasing the mechanical strength of the wall material; the ultrasonic dispersion process effectively breaks up polylactic acid aggregates, making them evenly distributed in the emulsion, thereby improving the stability of the emulsion and the strength of subsequent microcapsules; The product is separated by centrifugation, washed with deionized water for 3 to 5 times and vacuum dried to prepare anti-mite microcapsules. Glutaraldehyde reacts with amino groups in chitosan molecules to form a cross-linked network structure, which makes the wall material have excellent mechanical strength and chemical stability; the curing process makes the shell structure of the microcapsule more compact.

[0027] Please see attached Figure 1 In a preferred embodiment of the present invention, S2 includes: The pH value of the functional treatment liquid is 5.5-6.5, the viscosity is 60-80 mPa·s, and the mixed liquid is dispersed by ultrasonic treatment; the ultrasonic treatment includes 20-30 kHz, and its power is 200-300 W, and the polylactic acid particles are evenly distributed in the emulsion through physical dispersion, and combined with chitosan and gelatin to form a composite wall material; the cavitation effect of the ultrasonic wave breaks up the particle agglomerates, ensures that the particle size distribution is uniform and forms a synergistic effect with chitosan, through ultrasonic dispersion, the polylactic acid particles are evenly distributed, the mechanical strength and washing resistance of the microcapsule wall material are significantly enhanced, and the particle size distribution is more stable.

[0028] Please see attached Figure 1 In a preferred embodiment of the present invention, S3 includes: The grey cloth is immersed in a solution containing 1-3 g / L of cellulase and 0.8-1.2 g / L of a wetting agent, and treated at 45-55°C for 25-35 minutes. Cellulase: decomposes impurities such as pulp and wax on the fiber surface through enzymatic hydrolysis, converting them into soluble small molecules for easy removal; wetting agent: reduces the surface tension of the solution, enhances the wetting effect of the solution on the grey cloth, and ensures full contact between the enzyme and the fiber. After the immersion treatment, the impurities on the surface of the grey cloth are effectively decomposed and peeled off, the fiber is cleaner, and the adsorption effect of the subsequent functional treatment solution is enhanced; Rinse the grey cloth with deionized water for 2 to 4 times until the surface impurities are completely removed. Deionized water can effectively remove residual enzymes, dissolved impurities and wetting agents on the surface of the grey cloth. Through multiple rinsing, ensure that the components in the solution that may affect subsequent treatment are completely removed. After rinsing, there are no residual impurities on the surface of the grey cloth, and the finish is significantly improved, providing an ideal fiber surface state for subsequent padding treatment. The grey cloth is air-dried or oven-dried for later use. The surface of the dried grey cloth is clean and smooth without obvious wrinkles or damage. The fiber surface has good adsorption properties, providing a high-quality substrate for subsequent functional processing.

[0029] Please see attached Figure 1 In a preferred embodiment of the present invention, S4 includes: The functional treatment liquid is dipped into the grey cloth and uniform pressure is applied by the roller to control the rolling rate to be 70% to 80%. The functional treatment liquid is uniformly infiltrated into the fiber surface and the fiber gaps by capillary action during the dipping process. The uniform pressure applied by the roller squeezes out the excess treatment liquid to ensure that the amount of liquid attached to the fiber surface is moderate, thereby optimizing the use efficiency of the treatment liquid and reducing waste. Through the dipping and padding process, the functional treatment liquid can be uniformly attached to the surface and inside of the grey cloth, ensuring the uniform distribution of functional components in the subsequent processing process, while avoiding excessive residues that affect subsequent performance; Dry the grey cloth and dry the treated grey cloth at 110-120℃ for 3-5 minutes. During the drying process, the functional treatment liquid on the surface of the grey cloth quickly evaporates water, and at the same time, the modified water-based polyurethane and other components are cured through thermal action to form a dense functional protective film. Precise control of temperature and time can avoid thermal damage to the fibers caused by high temperature, while ensuring the adhesion and stability of the functional components. The surface treatment layer of the grey cloth after drying is uniform and the structure is stable. The functional components are firmly attached, giving the fabric excellent anti-mite, anti-feather, waterproof and antibacterial properties.

[0030] Please see attached Figure 1 In a preferred embodiment of the present invention, S5 includes: The fabric is calendered at 170-190°C and a pressure of 70-90 MPa for 15-25 seconds. Under high temperature and high pressure conditions, the functional treatment layer on the fiber surface forms a continuous and dense protective film through melting and reshaping. During the calendering process, the fibers are arranged more closely, reducing the surface porosity, thereby improving the anti-feather performance. After calendering, the surface of the fabric is smooth and flat, and the anti-feather performance is significantly enhanced. At the same time, it provides a more uniform base for subsequent antistatic treatment. Spray an antistatic solution with a concentration of 4 to 6 g / L and let it stand and dry at room temperature for 20 to 30 minutes. The antistatic agent adheres to the surface of the fabric by physical adsorption or chemical bonding to form a conductive layer, reducing the resistance of the fiber surface. During the standing and drying process, the components of the antistatic solution are evenly distributed on the fiber surface, enhancing the antistatic performance. After the antistatic treatment, the surface resistance of the fabric is significantly reduced, and the accumulation of static electricity during wearing is significantly reduced, which improves the comfort and practicality of the fabric.

[0031] In order to better understand the present invention, the above contents are described in detail below in conjunction with specific embodiments.

[0032] Example 1: Treatment method without adding anti-mite microcapsules Processing method: The functional treatment liquid does not contain anti-mite microcapsules, and is only composed of modified water-based polyurethane, waterproofing agent, softener and antibacterial agent; padding, drying, calendering and antistatic treatment are carried out according to the same process.

[0033] Test results: Anti-mite performance: The fabric showed no anti-mite effect, and the mite survival rate was 85%; Down-proof performance: Down penetration is 5 grains / 10cm 2 , the anti-feather effect is average; Washing resistance: After 50 washes, the functional coating retention rate is about 80%.

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

[0035] Example 2: Treatment method with adding common microcapsules Processing method: Ordinary single-walled microcapsules (chitosan monolayer encapsulated mite repellent) are added to the functional treatment liquid, and the remaining ingredients are the same as those in Example 1; Treated by the same process.

[0036] Test results: Anti-mite performance: The anti-mite rate was 70% in the initial test, but dropped to 40% after 10 washes; Down-proof performance: Down penetration is 4 grains / 10cm 2 , the anti-feather performance has been improved; Washing resistance: The coating retention rate is 85%, but the mite repellent is lost quickly.

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

[0038] Example 3: Method of the present invention (addition of composite microcapsules) Processing method: Double-walled anti-mite microcapsules (chitosan and polylactic acid composite wall materials) are added to the functional treatment liquid, and the remaining ingredients are modified water-based polyurethane, waterproofing agent, softener and antibacterial agent; The process according to the invention comprises pretreatment, padding with functional treatment liquid, drying, calendering and antistatic finishing.

[0039] Test results: Anti-mite performance: The anti-mite rate in the initial test was 95%, and it remained at 90% after 50 washes; Down-proof performance: Down penetration is 2 pieces / 10cm 2 , significantly better than other embodiments; Washing resistance: The functional coating retention rate is as high as 95%.

[0040] Beneficial effects: The fabric exhibits excellent anti-mite, anti-feather and multifunctional properties, and its functional durability is significantly enhanced to meet the needs of the high-end market.

[0041] Comparative experiment 1: Anti-mite performance experimental design Experimental purpose: To verify the anti-mite performance of the present invention (experimental group).

[0042] Experimental setup Experimental Group: Experimental group (present invention): anti-mite and anti-feather fabric treated with functional treatment liquid containing composite wall material microcapsules. The composite wall material (chitosan + polylactic acid) has excellent sustained release function and can provide long-lasting mite repellent effect.

[0043] Control group: Control group 1: fabric without adding anti-mite microcapsules and only treated with modified water-based polyurethane coating.

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

[0045] Experimental procedures Mite inoculation: The mites were evenly inoculated on the fabric samples of the experimental group and the control group, with an initial inoculation amount of 200 ± 10 mites / cm 2 .

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

[0047] Mite repellent effect test: Initial effect: After 7 days of cultivation, the number of surviving mites was counted and the anti-mite rate was calculated.

[0048] Durability test: After the samples were washed 10, 20, and 50 times, the above incubation and statistical steps were repeated.

[0049] Statistical methods: Three samples were tested in each group, and three independent areas were tested in each sample. The mite survival rate was calculated and the anti-mite 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 Anti-mite performance test results From the data in Table 1, we can get: The experimental group results describe the initial effect: the anti-mite 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 anti-mite rate of the experimental group still remained at 90%, showing an excellent long-term anti-mite function.

[0052] Description of the results of the control group Control group 1 (no microcapsules added): The anti-mite effect was almost negligible, and the anti-mite rate was maintained at 7% to 12%, with no significant change.

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

[0054] Comparative experiment 2: Anti-feather performance experimental design Experimental purpose: To verify the advantages of the present invention (experimental group) in anti-feather performance.

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

[0056] Control group: Control group 1: Fabric with anti-feathering performance enhanced only by high-density satin weave, without functional treatment.

[0057] Control group 2: Treatment using a common waterborne polyurethane coating without the addition of fluorinated units or nanoparticles.

[0058] Experimental procedures Down Filling: Fill the standard down sample to the back of the fabric with a filling density of 50g / m 2 ; The fabric surface is fixed on a closed test frame, with a positive force area of ​​10cm 2 .

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

[0060] Penetration Particle Count: Collect and count the penetrating down particles on the front side of the fabric; The penetration of the initial test and after multiple washings (10 times, 20 times, 50 times) were recorded separately.

[0061] Statistical methods: Three samples were tested in each group, and each sample was repeated 3 times independently, and the average value was recorded.

[0062] The comparative experimental data are shown in Table 2: Table 2 Anti-feather performance test results From the data in Table 2, we can get: Experimental group results description Initial effect: The experimental group had the lowest down penetration, only 1 down / 10cm 2, the feather-proof rate is as high as 99%, which is better than the control group; Durability test: After 50 washes, the penetration of the experimental group increased to 3 particles / 10cm 2 , the feather protection rate remains at 97%.

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

[0064] Control group 2 (ordinary waterborne polyurethane coating): initial penetration was 4 particles / 10cm 2 , feather-proof rate 96%; after 50 washes, the penetration rate increased to 12 particles / 10cm 2 , the anti-feather performance is significantly reduced.

[0065] Comparative experiment 3: Durability experiment design Experimental purpose: To verify the functional retention rate of the fabric of the present invention after multiple washings.

[0066] Experimental setup Experimental Group: Experimental group (the present invention): fabric treated with composite wall material microcapsules and modified waterborne polyurethane coating.

[0067] Control group: Control group 1: Fabric without functional coating and relying only on high-density woven structure.

[0068] Control group 2: fabrics with ordinary waterborne polyurethane coating and single-walled microcapsules.

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

[0070] Washing treatment: According to GB / T8629-2017 standard, simulate the household washing environment (temperature 40°C, detergent concentration 5g / L, stirring speed 40rpm).

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

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

[0073] Down-proof performance: According to the down-proof performance test method, the down penetration after washing is tested.

[0074] Coating adhesion rate: The retention rate (%) of the fabric coating before and after washing is measured by weight method.

[0075] Data Records: Take the average value of the test results for each sample and record the changing trend.

[0076] The comparative experimental data are shown in Table 3: Table 3 Durability test results From the data in Table 3, we can get: Experimental group results description Anti-mite performance: The initial anti-mite rate of the experimental group was 97%, and it remained at 90% after 50 washes, showing excellent long-term anti-mite ability; Anti-feather performance: The down penetration rate increased from the initial 1 grain / 10cm 2 Increase to 3 pieces / 10cm 2 , still far lower than the control group; coating adhesion rate: after 50 washes, the coating adhesion rate remained at 95%, showing extremely high durability.

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

[0078] Control group 2 (ordinary coating and microcapsules): The initial anti-mite rate was 70%, but it dropped to 35% after 50 washes; the down penetration rate increased from the initial 4 particles / 10cm 2 Increase to 12 pieces / 10cm 2 ; The coating adhesion rate dropped from 95% to 65%, and the function decayed rapidly.

[0079] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-mite and anti-feather fabric, characterized in that: The fabrics include: Outer layer: Satin weave, with a weft density of 150-170 threads / inch, and a high-density anti-feather structure; Middle layer: modified polyester fiber with embedded mite repellent, woven with honeycomb structure, with a weft density of 110 to 130 strands per inch, to provide anti-mite function; Inner layer: Twill weave is used to improve the softness and breathability of the fabric; The fabric is treated with a functional treatment liquid, and the functional treatment liquid includes components in the following mass concentration ranges: Anti-mite microcapsules: 50-70g / L; Modified waterborne polyurethane: 40-60g / L; Nano-silicon dioxide particles: 4-6 g / L; Silicone softener: 15-25g / L; Low-fluorine polytetrafluoroethylene emulsion: 10-20g / L; Silver ion antibacterial agent: 5-10g / L.

2. The anti-mite and anti-feather fabric according to claim 1, characterized in that: The wall material of the anti-mite microcapsule comprises chitosan and polylactic acid, the mass ratio of chitosan to polylactic acid is 65:35-75:25, the particle size of the microcapsule is 2-4 μm, and the mite repellent is neem oil or citronella oil.

3. 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%, and the polyester fiber has anti-mite, antibacterial and washing-resistant functions.

4. The anti-mite and anti-feather fabric according to claim 1, characterized in that: The modified waterborne polyurethane in the functional treatment liquid contains 2% to 5% of fluorinated units and 4 to 6 g / L of nanoparticles, and is used to form a dense and flexible protective film on the surface of the fabric.

5. A method for processing anti-mite and anti-feather fabrics, characterized in that: Using the anti-mite and anti-feather fabric according to any one of claims 1 to 4 comprises the following steps: S1, preparing anti-mite microcapsules, encapsulating the mite repellent with a double-walled material of chitosan and polylactic acid to form microcapsules with a particle size of 2 to 4 μm; S2, preparing a functional treatment liquid, mixing the anti-mite microcapsules with modified waterborne polyurethane, nano-silicon dioxide particles, organic silicon softener, waterproof component and antibacterial component to form a treatment liquid; S3, pre-treating the grey cloth, immersing the grey cloth in a treatment solution containing 1 to 3 g / L of cellulase, removing surface impurities and then rinsing; S4, performing functional treatment on the grey cloth, dipping the grey cloth into the functional treatment liquid and drying it; S5. Shape the grey cloth at 150-170°C for 60-90 seconds; S6, finishing, improving fabric performance through calendering and antistatic treatment.

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

7. The method for processing anti-mite and anti-feather fabric according to claim 5, characterized in that: The 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 the mixed liquid is dispersed by ultrasonic treatment; The ultrasonic treatment includes 20-30kHz and a power of 200-300W.

8. The method for processing anti-mite and anti-feather fabric according to claim 5, characterized in that: The S3 includes: The grey cloth is immersed in a solution containing 1-3 g / L of cellulase and 0.8-1.2 g / L of a wetting agent, and the treatment is maintained at 45-55° C. for 25-35 minutes; Rinse the grey cloth with deionized water 2 to 4 times until the surface impurities are completely removed; Air-dry or dry the grey fabric for later use.

9. The method for processing anti-mite and anti-feather fabric according to claim 5, characterized in that: The S4 includes: Dip the functional treatment liquid into the grey cloth, apply uniform pressure through the roller, and control the rolling rate to be 70% to 80%; Drying the grey cloth: drying the treated grey cloth at 110-120°C for 3-5 minutes.

10. The method for processing anti-mite and anti-feather fabric according to claim 5, characterized in that: The S5 includes: The fabric is calendered at 170-190°C and a pressure of 70-90 MPa for 15-25 seconds; Spray an antistatic solution with a concentration of 4 to 6 g / L and let it dry at room temperature for 20 to 30 minutes.

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