Preparation of antibacterial and anti-mite healthy wrap yarn mattress

Abstract

The invention relates to an antibacterial and anti-mite healthy wrap yarn mattress, and belongs to the technical field of new materials. The preparation method of the antibacterial and anti-mite healthy wrap yarn mattress comprises the following steps: preparing modified cotton fibers, preparing modified cotton fiber bamboo fiber spandex wrap yarns, preparing ZnO / QAS hybrid antibacterial wrap yarns, preparing a high-density columnar loofah sponge raw material, and preparing a ZnO / QAS hybrid antibacterial wrap yarn columnar loofah sponge mattress filling material. The invention relates to preparation of an antibacterial anti-mite healthy wrap yarn mattress. A cotton fiber scouring and bleaching treatment technology, a cotton fiber function modification technology, a padding-hot drying technology and a high-density columnar loofah sponge acid bath softening treatment technology are creatively used. The antibacterial and anti-mite healthy wrap yarn mattress shows good air permeability, is light, is antibacterial and anti-mite, and has better antibacterial and anti-mite effects.

Description

Technical Field

[0001] The invention relates to the preparation of an antibacterial and anti-mite healthy coated yarn mattress, belonging to the field of new materials and new technologies. Background Art

[0002] Natural plant fiber materials have the advantages of rich resources, renewable, non-toxic, pollution-free, and biodegradable. They have been widely used in all aspects of people's daily lives. They are also widely used in mattress production and are favored by consumers. At present, plant fiber mattresses on the market, such as coir mats and jute mats, are hard, poor in air permeability, and heavy, which are not conducive to the comfort of mattresses and are not conducive to handling. Loofah has a natural three-dimensional mesh structure, light weight, high porosity, and good air permeability. It is a high-quality, lightweight, and breathable alternative to plant fiber mattress filling materials. At present, the realization of textile antibacterial and anti-mite functions mainly depends on chemical finishing. Although the chemical finishing process has significant effects, many finishing agents still have potential safety and stability risks. With the improvement of living standards, people's living needs have gradually changed from satisfying warmth and comfort to pursuing natural, healthy and environmentally friendly.

[0003] Home furnishings are closely related to human health. With the development of social economy and the improvement of science and technology, consumers have higher and higher requirements for home furnishings. They hope that they can have certain functions on the basis of meeting basic performance, such as softness and elasticity, moisture absorption and breathability, antibacterial and anti-mite deodorization, and UV protection. Therefore, functional home furnishings have received more and more attention. There are various bacteria, fungi and other microorganisms in human living and working environments, such as common Staphylococcus aureus, Escherichia coli and Candida albicans. The sweat, oil and other metabolites secreted by the human body and some liquid and solid pollutants in life attached to home furnishings and clothing textiles during use have become an excellent place for microbial growth and reproduction. The large-scale reproduction of bacteria is easy to produce odorous gases, which affects the mood of users, and can also cause various skin diseases and spread diseases, causing cross infection, posing a serious threat to people's health. Therefore, from the perspective of disease prevention and health care requirements, it is very meaningful for home furnishing products to have certain antibacterial and antibacterial functions.

[0004] The antibacterial and anti-mite healthy coated yarn mattress is a mattress that combines antibacterial technology and anti-mite materials, aiming to provide a more hygienic and healthy sleeping environment. It uses specially treated fiber materials and combines multiple technologies to achieve antibacterial and anti-mite functions. Summary of the invention

[0005] In view of the above problems, the present invention provides a method for preparing an antibacterial and anti-mite healthy coated yarn mattress.

[0006] The first technical purpose of the present invention is to provide a method for preparing modified cotton fiber bamboo fiber spandex coated yarn which has soft and comfortable touch, good air permeability, natural antibacterial property and good elasticity.

[0007] The second technical purpose of the present invention is to provide a method for preparing a ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling material with strong antibacterial properties, good air permeability and moisture absorption, and good support.

[0008] The third technical purpose of the present invention is to provide a method for preparing an antibacterial and anti-mite healthy coated yarn mattress which is antibacterial and anti-mite, has good air permeability, good support, and is environmentally friendly.

[0009] The invention relates to the preparation of an antibacterial and anti-mite healthy coated yarn mattress. The preparation method comprises: preparing modified cotton fiber, preparing modified cotton fiber bamboo fiber spandex coated yarn, preparing ZnO / QAS hybrid antibacterial coated yarn, preparing high-density columnar loofah raw material, preparing ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling material, and preparing antibacterial and anti-mite healthy coated yarn mattress.

[0010] Preferably, step (1) preparation of modified cotton fiber The cotton fiber is put into a hydrogen peroxide, sodium hydroxide, and sodium silicate solution for scouring and bleaching, treated in a water bath, the fiber is taken out, washed, and dried, the scouring and bleaching cotton fiber is immersed in a modification treatment solution composed of HB (dried bark of Rutaceae plant) extract, AH (perennial herb of Compositae family) extract, and tannic acid, treated in a water bath, taken out after cooling, washed, and dried, to obtain modified cotton fiber; Step (2) Preparation of modified cotton fiber bamboo fiber spandex coated yarn The prepared modified cotton fiber is used as the outer covering yarn and spandex is used as the core yarn to prepare the covering yarn, the prepared modified cotton fiber, bamboo fiber and spandex covering yarn are soaked in a tetradecyl dimethyl benzyl ammonium chloride solution, and then the covering yarn is placed in an oven for drying to obtain the modified cotton fiber bamboo fiber spandex covering yarn; Step (3) Preparation of ZnO / QAS hybrid antibacterial coated yarn ZnONPs (zinc oxide) and QAS (quaternary ammonium salt) are added to DI (deionized water) of neutral silica sol, and ultrasonic dispersion is performed to obtain a ZnO / QAS hybrid antibacterial suspension. The modified cotton fiber bamboo fiber spandex coated yarn is then placed in the hybrid antibacterial suspension, taken out after being fully soaked, and then passed through a padding dyeing machine. The entire padding process is repeated and moisture absorption is maintained. After the padding process is completed, it is moved to an oven for drying and solidification to complete the chemical bond breaking and formation process. It is then washed with DI (deionized water) to remove the antibacterial agent weakly adhered to the surface of the cotton fabric, and finally dried to obtain the ZnO / QAS hybrid antibacterial coated yarn. Step (4) Preparation of high-density columnar loofah raw materials The loofahs with aged and shrunk ends and unclear layers are removed, and the middle part similar to a cylindrical shape is selected to cut the columnar body, and then rinsed with clean water and dried. Finally, the loofah is immersed in a mixed solution of NaOH and urea in a constant temperature and relative humidity chamber, and after being treated under the temperature conditions, it is washed with clean water to remove the alkali, and then dried, acid bathed, rinsed with clean water, dried, and placed in a constant temperature and humidity chamber to obtain a high-density columnar loofah raw material; Step (5) Preparation of ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling material The high-density columnar loofahs used for the preparation of mattress filling materials are compressed separately, and the compression time and pressure are confirmed to obtain compressed columnar loofahs, and then the compressed columnar loofahs are quilted into columnar loofah pads with the prepared ZnO / QAS hybrid antibacterial coated yarns, and multiple layers of columnar loofah pads are stacked and loaded into a fabric bag, and the fiber lignin is softened by hot pressing temperature to ensure the stability of the size of the columnar loofahs after compression, so as to obtain ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling materials; Step (6) Preparation of antibacterial and anti-mite healthy coated yarn mattress The prepared ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling material is covered on the thin sponge above the mattress spring layer, the entire mattress is covered with a fabric with good air permeability, the internal material is fixed by quilting, and a reinforcing belt is added to the edge to obtain an antibacterial and anti-mite healthy coated yarn mattress.

[0011] The first technical purpose of the present invention is achieved through the following technical solutions: Preferably, step (1) preparation of modified cotton fiber The cotton fiber is placed in 15-30 g / L hydrogen peroxide (30-60%), 5-20 g / L sodium hydroxide, and 2-8 g / L sodium silicate solution for scouring and bleaching, and treated in a 100-130°C water bath for 1-2.5 hours. The fiber is taken out, washed, and dried. The scourged and bleached cotton fiber is immersed in a modification treatment solution composed of 5-20% HB (dried bark of Rutaceae plants) extract, 9-12% AH (perennial herb of Compositae family) extract, and 2-5% tannic acid, treated in a water bath, taken out after cooling, washed, and dried to obtain modified cotton fiber.

[0012] The advantage of adopting the present invention is that the modified cotton fiber can effectively inhibit the growth of various bacteria, such as Staphylococcus aureus, Escherichia coli, etc., thereby reducing the odor caused by bacteria, using antibacterial agents that are harmless to the human body, meeting environmental protection requirements, and having high safety.

[0013] Preferably, step (2) preparation of modified cotton fiber bamboo fiber spandex coated yarn The prepared modified cotton fiber is used as the outer covering yarn and spandex is used as the core wire to prepare the covering yarn. The prepared modified cotton fiber, bamboo fiber and spandex covering yarn are immersed in a 0.5-2% by mass fraction tetradecyl dimethyl benzyl ammonium chloride solution for 2-3.5 hours, and then the covering yarn is placed in a 70-85 ℃ oven for drying for 2-3.5 hours to obtain the modified cotton fiber bamboo fiber spandex covering yarn.

[0014] The invention has the advantage of combining the advantages of modified cotton fiber, bamboo fiber and spandex coated yarn, and has good moisture absorption and air permeability, antibacterial property and excellent elasticity. The addition of modified cotton fiber and bamboo fiber improves the suitability, while spandex provides the necessary stretchability.

[0015] Preferably, step (3) preparation of ZnO / QAS hybrid antibacterial coated yarn ZnONPs (zinc oxide) and QAS (quaternary ammonium salt) were added to 20-35 mL (2-5% neutral silica sol) of DI (deionized water), and ultrasonic dispersion was performed for 5-20 min to obtain a ZnO / QAS hybrid antibacterial suspension. The modified cotton fiber bamboo fiber spandex coated yarn was then placed in the hybrid antibacterial suspension, fully soaked for 15-30 min, and then taken out. Then, the yarn was passed through a padding dyeing machine (pressure of 0.2-0.8 MPa and speed of 15-30 rpm). The entire padding process was repeated 3-6 times and moisture absorption was maintained. After the padding process was completed, it was moved to a 60-75 °C oven for drying and cured at 140-155 °C for 3-6 min to complete the chemical bond breaking and formation process. It was then washed with DI (deionized water) to remove the antibacterial agent weakly adhered to the surface of the cotton fabric. Finally, it was dried at 60-75 °C to obtain the ZnO / QAS hybrid antibacterial coated yarn.

[0016] The invention has the advantages that the ZnO nanoparticles have photocatalytic activity, can generate free radicals, destroy bacterial cell membranes and DNA, and thus kill bacteria; the quaternary ammonium salt, as a cationic surfactant, can be adsorbed on the bacterial surface and destroy the cell membrane, leading to bacterial death; ZnO and QAS are fixed on the fiber surface or inside, so that the antibacterial property remains stable after multiple washings.

[0017] The second technical purpose of the present invention is achieved through the following technical solutions: Preferably, step (4) preparation of high-density columnar loofah raw materials Remove the loofahs that are aging, shrinking, and have unclear layers at both ends, select the middle part that is approximately cylindrical, cut into 50-80 mm columns, then rinse with clean water for 5-20 times and dry, finally, use a constant temperature and humidity chamber at a constant temperature of 20-35°C and a relative humidity of 65-80%, treat for 24-27 hours, immerse the loofahs in a mixed solution of 18-24% NaOH and urea at a treatment temperature of 80-95°C, after 30-60 minutes, wash with clean water to remove the alkali, then spin dry, take an acid bath for 8-14 minutes, rinse with clean water, dry, and put into a constant temperature and humidity chamber for treatment for 24-27 hours to obtain a high-density columnar loofah raw material.

[0018] The invention has the advantage that the loofah material has a lower density, which makes it lighter in weight under the same volume and is convenient for transportation and installation. The loofah has good water absorption capacity and can absorb excess moisture in a humid environment while maintaining good air permeability and certain antibacterial properties.

[0019] Preferably, step (5) preparation of ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling material The high-density columnar loofah used for the preparation of mattress filling materials is compressed to a height of 40-70%, and the compression time is confirmed to be 10-25 min and the pressure is 0.1-0.4 MPa to obtain a compressed columnar loofah. The compressed columnar loofah is then quilted into a 300-600 mm × 400-700 mm columnar loofah pad layer using the prepared ZnO / QAS hybrid antibacterial coated yarn. Multiple layers of columnar loofah pad layers are stacked and loaded into a fabric bag. The fiber lignin is softened at a hot pressing temperature of 50-80°C to ensure the dimensional stability of the columnar loofah after compression, thereby obtaining a ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling material.

[0020] The invention has the advantages that the structure of the loofah makes it have good support and softness, and can provide a comfortable sleeping experience. The ZnO / QAS hybrid antibacterial coated yarn has a high-efficiency antibacterial effect, can inhibit the growth of various bacteria, and keep the mattress clean and hygienic. The mattress filling material combining the ZnO / QAS hybrid antibacterial coated yarn and the columnar loofah not only has good antibacterial performance and comfort, but is also environmentally friendly and sustainable, and is an ideal mattress filling option.

[0021] The third technical objective of the present invention is achieved through the following technical solutions: As a preferred method, step (6) preparation of antibacterial and anti-mite healthy coated yarn mattress The prepared ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling material is covered 5~8 cm on the thin sponge above the 0.9~1.8×1.8~2.4m mattress spring layer, and the entire mattress is covered with a fabric with good air permeability. The inner material is fixed by quilting with 1~1.6mm thread, and a reinforcing tape is added to the edge to obtain an antibacterial and anti-mite healthy coated yarn mattress.

[0022] The advantage of adopting the present invention is that the mattress adopts antibacterial and anti-mite fiber material, which can effectively inhibit the growth of bacteria and mites, reduce allergens, and is suitable for people with allergies. The mattress material has good air permeability and can effectively adjust the humidity and temperature inside and outside the mattress, keeping the sleeping environment dry and comfortable, improving the comfort of the mattress, and enhancing its health function, providing users with a more hygienic and healthy sleeping environment.

[0023] In summary, the present invention has the following beneficial effects: 1. The advantage of the present invention is that the modified cotton fiber can effectively inhibit the growth of various bacteria, such as Staphylococcus aureus, Escherichia coli, etc., thereby reducing the odor caused by bacteria, using an antibacterial agent that is harmless to the human body, meeting environmental protection requirements, and having high safety; 2. The invention has the advantages of combining the advantages of modified cotton fiber, bamboo fiber and spandex coated yarn, and has good moisture absorption and air permeability, antibacterial properties, and excellent elasticity. The addition of modified cotton fiber and bamboo fiber improves comfort, while spandex provides the necessary elasticity. 3. The advantages of the present invention are that ZnO nanoparticles have photocatalytic activity and can generate free radicals to destroy bacterial cell membranes and DNA, thereby killing bacteria. Quaternary ammonium salts, as a cationic surfactant, can be adsorbed on the surface of bacteria and destroy cell membranes, leading to bacterial death. ZnO and QAS are fixed on the fiber surface or inside, so that the antibacterial performance remains stable after multiple washings; 4. The present invention has the advantage that the loofah material has a lower density, which makes it lighter in weight under the same volume, easy to carry and install, and the loofah has good water absorption capacity and can absorb excess water in a humid environment, while also maintaining good air permeability and certain antibacterial properties; 5. The invention has the advantages that the structure of the loofah makes it have good support and softness, and can provide a comfortable sleeping experience. The ZnO / QAS hybrid antibacterial coated yarn has a high-efficiency antibacterial effect, can inhibit the growth of various bacteria, and keep the mattress clean and hygienic. The mattress filling material combining the ZnO / QAS hybrid antibacterial coated yarn and the columnar loofah not only has good antibacterial properties and comfort, but is also environmentally friendly and sustainable, and is an ideal mattress filling choice; 6. The advantage of adopting the present invention is that the mattress adopts antibacterial and anti-mite fiber material, which can effectively inhibit the growth of bacteria and mites, reduce allergens, and is suitable for people with allergies. The mattress material has good air permeability and can effectively adjust the humidity and temperature inside and outside the mattress, keeping the sleeping environment dry and comfortable, improving the comfort of the mattress, and enhancing its health function, providing users with a more hygienic and healthy sleeping environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The present invention is a preparation flow chart of an antibacterial and anti-mite healthy coated yarn mattress. DETAILED DESCRIPTION

[0025] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention. Without departing from the spirit and substance of the present invention, modifications or substitutions made to the methods, steps or conditions of the present invention are within the scope of the present invention.

[0026] If not specifically stated, the technical means used in the examples are conventional means known to those skilled in the art. In addition, all the raw materials used in the examples are known commercial products. Example 1

[0027] Step (1) Preparation of modified cotton fiber The cotton fiber is put into 15g / L hydrogen peroxide (30-60%), 5g / L sodium hydroxide, and 2g / L sodium silicate solution for scouring and bleaching, and treated in a 100°C water bath for 1 hour. The fiber is taken out and washed and dried. The scouring and bleaching cotton fiber is immersed in a modification treatment solution composed of 5% HB (dried bark of Rutaceae plant) extract, 9% AH (perennial herb of Compositae family) extract, and 2% tannic acid, treated in a water bath, taken out and washed and dried after cooling, to obtain modified cotton fiber; Step (2) Preparation of modified cotton fiber bamboo fiber spandex coated yarn The prepared modified cotton fiber was used as the outer covering yarn and spandex was used as the core yarn to prepare the covering yarn. The prepared modified cotton fiber, bamboo fiber and spandex covering yarn were immersed in a 0.5% by mass fraction tetradecyl dimethyl benzyl ammonium chloride solution for 2 hours, and then the covering yarn was placed in a 70°C oven for drying for 2 hours to obtain the modified cotton fiber bamboo fiber spandex covering yarn. Step (3) Preparation of ZnO / QAS hybrid antibacterial coated yarn ZnONPs (zinc oxide) and QAS (quaternary ammonium salt) were added to 20 mL (2% neutral silica sol) of DI (deionized water), and ultrasonically dispersed for 5 minutes to obtain a ZnO / QAS hybrid antibacterial suspension. The modified cotton fiber bamboo fiber spandex coated yarn was then placed in the hybrid antibacterial suspension, fully soaked for 15 minutes, and then taken out. Then, it was passed through a padding dyeing machine (pressure of 0.2 MPa, speed of 15 rpm), and the entire padding process was repeated 3 times and kept hygroscopic. After the padding process was completed, it was moved to a 60°C oven for drying and cured at 140°C for 3 minutes to complete the chemical bond breaking and formation process. It was then washed with DI (deionized water) to remove the antibacterial agent weakly adhered to the surface of the cotton fabric, and finally dried at 60°C to obtain the ZnO / QAS hybrid antibacterial coated yarn. Step (4) Preparation of high-density columnar loofah raw materials Remove the loofahs that are aged, shrunk, and have unclear layers at both ends, select the middle part that is approximately cylindrical, cut into 50mm columns, then rinse with clean water 5 times and dry, finally, use a constant temperature and humidity box, constant temperature 20°C, relative humidity 65%, treat for 24h, immerse the loofah in a mixed solution of 18% NaOH and urea, the treatment temperature is 80°C, after 30min, wash with clean water to remove alkali, then dry, carry out an 8min acid bath, rinse with clean water, dry, put in a constant temperature and humidity box for 24h, and obtain a high-density columnar loofah raw material; Step (5) Preparation of ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling material The high-density columnar loofahs used for the preparation of mattress filling materials are compressed to a height of 40%, and the compression time is confirmed to be 10 minutes and the pressure is 0.1 MPa to obtain compressed columnar loofahs, and then the compressed columnar loofahs are quilted into a 300mm×400mm columnar loofah cushion layer with the prepared ZnO / QAS hybrid antibacterial coated yarn, and multiple layers of columnar loofah cushion layers are stacked and loaded into a fabric bag, and the fiber lignin is softened at a hot pressing temperature of 50°C to ensure the dimensional stability of the columnar loofah after compression, thereby obtaining a ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling material; Step (6) Preparation of antibacterial and anti-mite healthy coated yarn mattress The prepared ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling material was covered 5 cm on the thin sponge above the 0.9×1.8m mattress spring layer, and the entire mattress was covered with a fabric with good air permeability. The inner material was fixed by quilting with 1mm thread, and a reinforcing tape was added to the edge to obtain an antibacterial and anti-mite healthy coated yarn mattress. Example 2

[0028] Step (1) Preparation of modified cotton fiber The cotton fiber is put into 20g / L hydrogen peroxide (30-60%), 10g / L sodium hydroxide, and 4g / L sodium silicate solution for scouring and bleaching, and treated in a 110°C water bath for 1.5 hours, and the fiber is taken out for washing and drying, and the scouring and bleaching cotton fiber is immersed in a modification treatment solution composed of 10% HB (dried bark of Rutaceae plant) extract, 10% AH (perennial herb of Compositae family) extract, and 3% tannic acid, and treated in a water bath, and after cooling, taken out for washing and drying to obtain modified cotton fiber; Step (2) Preparation of modified cotton fiber bamboo fiber spandex coated yarn The prepared modified cotton fiber was used as the outer covering yarn and spandex was used as the core yarn to prepare the covering yarn. The prepared modified cotton fiber, bamboo fiber and spandex covering yarn were soaked in a 1% by mass tetradecyl dimethyl benzyl ammonium chloride solution for 2.5 hours, and then the covering yarn was placed in a 75°C oven for drying for 2.5 hours to obtain the modified cotton fiber bamboo fiber spandex covering yarn. Step (3) Preparation of ZnO / QAS hybrid antibacterial coated yarn ZnONPs (zinc oxide) and QAS (quaternary ammonium salt) were added to 25 mL (3% neutral silica sol) of DI (deionized water), and ultrasonic dispersion was performed for 10 minutes to obtain a ZnO / QAS hybrid antibacterial suspension. The modified cotton fiber bamboo fiber spandex coated yarn was then placed in the hybrid antibacterial suspension, fully soaked for 20 minutes, and then taken out. Then, the yarn was passed through a padding dyeing machine (pressure of 0.4 MPa and speed of 20 rpm). The entire padding process was repeated 4 times and moisture absorption was maintained. After the padding process was completed, it was moved to a 65°C oven for drying and cured at 145°C for 4 minutes to complete the chemical bond breaking and formation process. It was then washed with DI (deionized water) to remove the antibacterial agent weakly adhered to the surface of the cotton fabric. Finally, it was dried at 65°C to obtain the ZnO / QAS hybrid antibacterial coated yarn. Step (4) Preparation of high-density columnar loofah raw materials Remove the loofahs that are aged, shrunk, and have unclear layers at both ends, select the middle part that is approximately cylindrical, cut into 60mm columns, then rinse with clean water 10 times and dry, finally, use a constant temperature and humidity box, constant temperature 25°C, relative humidity 70%, treat for 25h, immerse the loofahs in a mixed solution of 20% NaOH and urea, the treatment temperature is 85°C, after 40min, wash with clean water to remove alkali, then dry, carry out a 10min acid bath, rinse with clean water, dry, put in a constant temperature and humidity box for 25h, and obtain a high-density columnar loofah raw material; Step (5) Preparation of ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling material The high-density columnar loofahs used for the preparation of mattress filling materials are compressed to a height of 50%, and the compression time is confirmed to be 15 minutes and the pressure is 0.2 MPa to obtain compressed columnar loofahs, and then the compressed columnar loofahs are quilted into a 400mm×500mm columnar loofah cushion layer with the prepared ZnO / QAS hybrid antibacterial coated yarn, and multiple layers of columnar loofah cushion layers are stacked and loaded into a fabric bag, and the fiber lignin is softened at a hot pressing temperature of 60°C to ensure the dimensional stability of the columnar loofahs after compression, thereby obtaining a ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling material; Step (6) Preparation of antibacterial and anti-mite healthy coated yarn mattress The prepared ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling material was covered on a thin sponge 6 cm above the 1.2×2.0m mattress spring layer, and the entire mattress was covered with a fabric with good air permeability. The inner material was fixed by quilting with 1.2mm thread, and a reinforcing tape was added to the edge to obtain an antibacterial and anti-mite healthy coated yarn mattress. Example 3

[0029] Step (1) Preparation of modified cotton fiber The cotton fiber is put into 20g / L hydrogen peroxide (40%), 15g / L sodium hydroxide, and 6g / L sodium silicate solution for scouring and bleaching, and treated in a 120°C water bath for 2 hours, and the fiber is taken out for washing and drying, and the scouring and bleaching cotton fiber is immersed in a modification treatment solution composed of 15% HB (dried bark of Rutaceae plant) extract, 11% AH (perennial herb of Compositae family) extract, and 4% tannic acid, and treated in a water bath, and after cooling, taken out for washing and drying to obtain modified cotton fiber; Step (2) Preparation of modified cotton fiber bamboo fiber spandex coated yarn The prepared modified cotton fiber was used as the outer covering yarn and spandex was used as the core yarn to prepare the covering yarn. The prepared modified cotton fiber, bamboo fiber and spandex covering yarn were soaked in a 1.5% by mass fraction tetradecyl dimethyl benzyl ammonium chloride solution for 3 hours, and then the covering yarn was placed in a 70-85°C oven for drying for 3 hours to obtain the modified cotton fiber bamboo fiber spandex covering yarn. Step (3) Preparation of ZnO / QAS hybrid antibacterial coated yarn ZnONPs (zinc oxide) and QAS (quaternary ammonium salt) were added to 30 mL (4% neutral silica sol) of DI (deionized water), and ultrasonically dispersed for 15 minutes to obtain a ZnO / QAS hybrid antibacterial suspension. The modified cotton fiber bamboo fiber spandex coated yarn was placed in the hybrid antibacterial suspension, fully soaked for 25 minutes, and then taken out. Then, it was passed through a padding dyeing machine (pressure of 0.6 MPa, speed of 25 rpm), and the entire padding process was repeated 5 times and kept hygroscopic. After the padding process was completed, it was moved to a 70°C oven for drying and cured at 150°C for 5 minutes to complete the chemical bond breaking and formation process. It was then washed with DI (deionized water) to remove the antibacterial agent weakly adhered to the surface of the cotton fabric, and finally dried at 70°C to obtain the ZnO / QAS hybrid antibacterial coated yarn. Step (4) Preparation of high-density columnar loofah raw materials Remove the loofahs that are aged, shrunk, and have unclear layers at both ends, select the middle part that is approximately cylindrical, cut into 70mm columns, then rinse with clean water 15 times and dry, finally, use a constant temperature and humidity box, constant temperature 30°C, relative humidity 75%, treat for 26h, immerse the loofahs in a mixed solution of 22% NaOH and urea, the treatment temperature is 90°C, after 50min, wash with clean water to remove alkali, then dry, carry out a 12min acid bath, rinse with clean water, dry, put in a constant temperature and humidity box for 26h, and obtain a high-density columnar loofah raw material; Step (5) Preparation of ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling material The high-density columnar loofahs used for the preparation of mattress filling materials are compressed to a height of 60%, and the compression time is confirmed to be 20 minutes and the pressure is 0.3 MPa to obtain compressed columnar loofahs, and then the compressed columnar loofahs are quilted into 500mm×600mm columnar loofah pads with the prepared ZnO / QAS hybrid antibacterial coated yarns, and multiple layers of columnar loofah pads are stacked and loaded into a fabric bag, and the fiber lignin is softened at a hot pressing temperature of 70°C to ensure the dimensional stability of the columnar loofahs after compression, thereby obtaining ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling materials; Step (6) Preparation of antibacterial and anti-mite healthy coated yarn mattress The prepared ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling material is covered 7 cm on the thin sponge above the 1.6×2.2m mattress spring layer, and the entire mattress is covered with a fabric with good air permeability. The inner material is fixed by quilting with 1.4mm thread, and a reinforcing tape is added to the edge to obtain an antibacterial and anti-mite healthy coated yarn mattress. Example 4

[0030] Step (1) Preparation of modified cotton fiber The cotton fiber is put into 30g / L hydrogen peroxide (60%), 20g / L sodium hydroxide, and 8g / L sodium silicate solution for scouring and bleaching, and treated in a 130°C water bath for 2.5 hours, and the fiber is taken out for washing and drying, and the scouring and bleaching cotton fiber is immersed in a modification treatment solution composed of 20% HB (dried bark of Rutaceae plant) extract, 12% AH (perennial herb of Compositae family) extract, and 5% tannic acid, and treated in a water bath, and after cooling, taken out for washing and drying to obtain modified cotton fiber; Step (2) Preparation of modified cotton fiber bamboo fiber spandex coated yarn The prepared modified cotton fiber was used as the outer covering yarn and spandex was used as the core yarn to prepare the covering yarn. The prepared modified cotton fiber, bamboo fiber and spandex covering yarn were soaked in a tetradecyl dimethyl benzyl ammonium chloride solution with a mass fraction of 0.5-2% for 3.5 hours, and then the covering yarn was placed in an oven at 85°C for drying for 3.5 hours to obtain the modified cotton fiber bamboo fiber spandex covering yarn. Step (3) Preparation of ZnO / QAS hybrid antibacterial coated yarn ZnONPs (zinc oxide) and QAS (quaternary ammonium salt) were added to 35 mL (5% neutral silica sol) of DI (deionized water), and ultrasonically dispersed for 20 minutes to obtain a ZnO / QAS hybrid antibacterial suspension. The modified cotton fiber bamboo fiber spandex coated yarn was placed in the hybrid antibacterial suspension, fully soaked for 30 minutes, and then taken out. Then, it was passed through a padding dyeing machine (pressure of 0.8 MPa, speed of 30 rpm), and the entire padding process was repeated 6 times and kept hygroscopic. After the padding process was completed, it was moved to a 75°C oven for drying, and cured at 155°C for 6 minutes to complete the chemical bond breaking and formation process. Then, it was washed with DI (deionized water) to remove the antibacterial agent weakly adhered to the surface of the cotton fabric, and finally dried at 75°C to obtain the ZnO / QAS hybrid antibacterial coated yarn. Step (4) Preparation of high-density columnar loofah raw materials Remove the loofahs that are aged, shrunk, and have unclear layers at both ends, select the middle part that is approximately cylindrical, cut into 80mm columns, then rinse with clean water 20 times and dry, finally, use a constant temperature and humidity box, constant temperature 35°C, relative humidity 80%, treat for 27h, immerse the loofahs in a mixed solution of 24% NaOH and urea, the treatment temperature is 95°C, after 30-60min, wash with clean water to remove alkali, then dry, carry out a 14min acid bath, rinse with clean water, dry, put in a constant temperature and humidity box for 27h, and obtain a high-density columnar loofah raw material; Step (5) Preparation of ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling material The high-density columnar loofahs used for the preparation of mattress filling materials were compressed to a height of 70%, and the compression time was confirmed to be 25 minutes and the pressure was 0.4 MPa to obtain compressed columnar loofahs, and then the compressed columnar loofahs were quilted into a 600mm×700mm columnar loofah pad layer with the prepared ZnO / QAS hybrid antibacterial coated yarn, and multiple layers of columnar loofah pad layers were stacked and loaded into a fabric bag, and the fiber lignin was softened at a hot pressing temperature of 80°C to ensure the dimensional stability of the columnar loofahs after compression, thereby obtaining a ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling material; Step (6) Preparation of antibacterial and anti-mite healthy coated yarn mattress The prepared ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling material was covered on 8 cm of the thin sponge above the 1.8×2.4 m mattress spring layer, and the entire mattress was covered with a fabric with good air permeability. The inner material was fixed by quilting with 1.6 mm thread, and a reinforcing tape was added to the edge to obtain an antibacterial and anti-mite healthy coated yarn mattress. Comparative Example 1

[0031] Step (1) Preparation of modified cotton fiber The cotton fiber is put into a 15g / L hydrogen peroxide (30%), 5g / L sodium hydroxide, and 2g / L sodium silicate solution for scouring and bleaching, and treated in a 100°C water bath for 1 hour, and the fiber is taken out for washing and drying, and the scouring and bleaching cotton fiber is immersed in a modification treatment solution composed of 5% HB (dried bark of Rutaceae plant) extract, 9% AH (perennial herb of Compositae family) extract, and 2% tannic acid, and treated in a water bath, and after cooling, taken out for washing and drying to obtain modified cotton fiber; Step (2) Preparation of modified cotton fiber bamboo fiber spandex coated yarn The prepared modified cotton fiber was used as the outer covering yarn and spandex was used as the core yarn to prepare the covering yarn. The prepared modified cotton fiber, bamboo fiber and spandex covering yarn were immersed in a 0.5% by mass fraction tetradecyl dimethyl benzyl ammonium chloride solution for 2 hours, and then the covering yarn was placed in a 70°C oven for drying for 2 hours to obtain the modified cotton fiber bamboo fiber spandex covering yarn. Step (3) Preparation of ZnO / QAS hybrid antibacterial coated yarn ZnONPs (zinc oxide) and QAS (quaternary ammonium salt) were added to 20 mL (2% neutral silica sol) of DI (deionized water), and ultrasonic dispersion was performed for 5 minutes to obtain a ZnO / QAS hybrid antibacterial suspension. The modified cotton fiber bamboo fiber spandex coated yarn was then placed in the hybrid antibacterial suspension, fully soaked for 15 minutes, taken out, and cured at 140°C for 3 minutes to complete the chemical bond breaking and formation process. Subsequently, it was washed with DI (deionized water) to remove the antibacterial agent weakly adhered to the surface of the cotton fabric, and finally dried at 60°C to obtain the ZnO / QAS hybrid antibacterial coated yarn. Step (4) Preparation of high-density columnar loofah raw materials Remove the loofahs that are aged, shrunk, and have unclear layers at both ends, select the middle part that is approximately cylindrical, cut into 50mm columns, then rinse with clean water 5 times and dry, finally, use a constant temperature and humidity box, constant temperature 20°C, relative humidity 65%, treat for 24h, immerse the loofah in a mixed solution of 18% NaOH and urea, the treatment temperature is 80°C, after 30min, wash with clean water to remove alkali, then dry, carry out an 8min acid bath, rinse with clean water, dry, put in a constant temperature and humidity box for 24h, and obtain a high-density columnar loofah raw material; Step (5) Preparation of ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling material The high-density columnar loofahs used for the preparation of mattress filling materials are compressed to a height of 40%, and the compression time is confirmed to be 10 minutes and the pressure is 0.1 MPa to obtain compressed columnar loofahs, and then the compressed columnar loofahs are quilted into a 300mm×400mm columnar loofah cushion layer with the prepared ZnO / QAS hybrid antibacterial coated yarn, and multiple layers of columnar loofah cushion layers are stacked and loaded into a fabric bag, and the fiber lignin is softened at a hot pressing temperature of 50°C to ensure the dimensional stability of the columnar loofah after compression, thereby obtaining a ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling material; Step (6) Preparation of antibacterial and anti-mite healthy coated yarn mattress The prepared ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling material was covered 5 cm on the thin sponge above the 0.9×1.8m mattress spring layer, and the entire mattress was covered with a fabric with good air permeability. The inner material was fixed by quilting with 1mm thread, and a reinforcing tape was added to the edge to obtain an antibacterial and anti-mite healthy coated yarn mattress. Comparative Example 2

[0032] Step (1) Preparation of modified cotton fiber The cotton fiber is put into 30g / L hydrogen peroxide (60%), 20g / L sodium hydroxide, and 8g / L sodium silicate solution for scouring and bleaching, and treated in a 130℃ water bath for 2.5 hours. The fiber is taken out for washing and drying. The scouring and bleaching cotton fiber is immersed in a modified treatment solution composed of 20% HB (dried bark of Rutaceae plant) extract, 12% AH (perennial herb of Compositae family) extract, and 5% tannic acid, and treated in a water bath. After cooling, the fiber is taken out for washing and drying. Step (2) Preparation of modified cotton fiber bamboo fiber spandex coated yarn The prepared modified cotton fiber was used as the outer covering yarn and spandex was used as the core yarn to prepare the covering yarn. The prepared modified cotton fiber, bamboo fiber and spandex covering yarn were soaked in a 2% by mass tetradecyl dimethyl benzyl ammonium chloride solution for 3.5 hours, and then the covering yarn was placed in a 5°C oven for drying for 3.5 hours to obtain the modified cotton fiber bamboo fiber spandex covering yarn. Step (3) Preparation of ZnO / QAS hybrid antibacterial coated yarn ZnONPs (zinc oxide) and QAS (quaternary ammonium salt) were added to 35 mL (5% neutral silica sol) of DI (deionized water), and ultrasonic dispersion was performed for 20 minutes to obtain a ZnO / QAS hybrid antibacterial suspension. The modified cotton fiber bamboo fiber spandex coated yarn was then placed in the hybrid antibacterial suspension, fully soaked for 30 minutes, and then taken out. Then, the yarn was passed through a padding dyeing machine (pressure of 0.8 MPa and speed of 30 rpm). The entire padding process was repeated 6 times and kept hygroscopic. After the padding process was completed, it was moved to a 60-75 ° C oven for drying, and cured at 155 ° C for 6 minutes to complete the chemical bond breaking and formation process. It was then washed with DI (deionized water) to remove the antibacterial agent weakly adhered to the surface of the cotton fabric, and finally dried at 75 ° C to obtain the ZnO / QAS hybrid antibacterial coated yarn. Step (4) Preparation of high-density columnar loofah raw materials Remove the loofahs that are aged, shrunk, and have unclear layers at both ends, select the middle part that is approximately cylindrical, cut into 80 mm columns, then rinse with clean water 20 times and dry, finally, use a constant temperature and humidity chamber at a constant temperature of 35°C and a relative humidity of 80% for 27 hours to obtain a high-density columnar loofah raw material; Step (5) Preparation of ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling material The high-density columnar loofahs used for the preparation of mattress filling materials were compressed to a height of 70%, and the compression time was confirmed to be 25 minutes and the pressure was 0.4 MPa to obtain compressed columnar loofahs, and then the compressed columnar loofahs were quilted into a 600mm×700mm columnar loofah pad layer with the prepared ZnO / QAS hybrid antibacterial coated yarn, and multiple layers of columnar loofah pad layers were stacked and loaded into a fabric bag, and the fiber lignin was softened at a hot pressing temperature of 80°C to ensure the dimensional stability of the columnar loofahs after compression, thereby obtaining a ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling material; Step (6) Preparation of antibacterial and anti-mite healthy coated yarn mattress The prepared ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling material was covered on 8 cm of the thin sponge above the 1.8×2.4 m mattress spring layer, and the entire mattress was covered with a fabric with good air permeability. The inner material was fixed by quilting with 1.6 mm thread, and a reinforcing tape was added to the edge to obtain an antibacterial and anti-mite healthy coated yarn mattress.

[0033] Comparison of detection experiments: The antibacterial and anti-mite healthy coated yarn mattress obtained in Examples 1 to 4 and the comparative products 1 and 2 were tested. The specific testing method is as follows: Anti-mite detection and repellent method Place 7 plastic culture dishes evenly in the shape of petals, stick each culture dish with transparent tape of the same width, and fix the 7 culture dishes on the sticky board. Place the treated samples and control samples in the surrounding 6 plastic culture dishes at intervals, so that they are laid flat on the bottom of the culture dishes, and place the attractant, about 0.5g of antibacterial and anti-mite healthy coated yarn sample, and no less than 200 surviving mites in the center of these 6 samples. Put the above 7 culture dishes together with the fixed sticky board into a plastic fresh-keeping container, and place a sponge soaked in saturated salt water at the bottom of the fresh-keeping box. Put the above device in a constant temperature and humidity incubator with a temperature of 25°C and a humidity of 75% for incubation. After 24 hours, take out the surrounding 6 culture dishes and count the surviving mites in the culture dishes under a stereo microscope.

[0034] Shaking flask method Take a 10 mL sterile tube, add 200 μL of activated E. coli (Escherichia coli) or S. aureus (Staphylococcus aureus) mother bacteria and 3.8 mL of phosphate buffer solution (PBS) to dilute the bacterial solution. Then weigh 53.6 mg of antibacterial and anti-mite healthy coated yarn sample and add it to a 20 mL glass sample bottle, then add 360 μL of diluted E. coli or S. aureus bacterial solution and 5 mL of phosphate buffer solution (PBS) solution to the glass sample bottle, and shake it with an oscillator (about 5 s). After mixing evenly, place the glass sample bottle in a constant temperature water bath oscillator and culture it at room temperature of 25 °C and a shaking rate of 150 rpm (revolutions per minute) for 8 h. After the culture is completed, use a pipette to draw 100 μL of the bacterial solution in the sample bottle, dilute it by 10-fold dilution method, draw 100 μL of the bacterial solution of appropriate concentration and drop it on a disposable culture dish containing agar solid culture medium, spread it evenly with a spreader, and then culture it in a 37 °C shaking incubator. Observe the number of colonies on the bacterial plate after 18 h.

[0035] Table 1 Anti-mite identification results

[0036] As can be seen from Table 1, Example 1 is the best and Comparative Example 1 is relatively poor. Example 1 has the highest mite repelling rate, indicating that it has a strong anti-mite effect. This result is mainly caused by the fact that in Comparative Example 1, the modified cotton fiber bamboo fiber spandex coated yarn is not completely padded and dried by the padding dyeing machine, and the chemical bond breaking and formation are not completed, resulting in such a large difference in the anti-mite effect of the prepared antibacterial and anti-mite healthy coated yarn mattress.

[0037] Table 2 Antimicrobial identification results

[0038] As can be seen from Table 2, Example 1 is the best and Comparative Example 2 is relatively poor. Example 1 has the highest antibacterial rate, indicating that it has a strong antibacterial effect. This result is mainly caused by the fact that in Comparative Example 2, the loofah was not treated with a mixed solution of NaOH and urea, and the residual alkaline substances were neutralized by acid bath to avoid adverse effects during subsequent use. The surface properties of the loofah were not changed by the treatment with NaOH and urea, and its antibacterial effect was not enhanced, so the antibacterial effect of the prepared antibacterial and anti-mite healthy coated yarn mattress was so different.

[0039] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art can make non-creative modifications to the present embodiment as needed, but they are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. Preparation of an antibacterial and anti-mite healthy coated yarn mattress, characterized in that: Preparation of modified cotton fiber, preparation of modified cotton fiber bamboo fiber spandex coated yarn, preparation of ZnO / QAS hybrid antibacterial coated yarn, preparation of high-density columnar loofah raw materials, preparation of ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling materials, preparation of antibacterial and anti-mite healthy coated yarn mattresses.

2. The preparation method of the antibacterial and anti-mite healthy coated yarn mattress according to claim 1 is characterized in that: Step (1) Preparation of modified cotton fiber The cotton fiber is put into a hydrogen peroxide, sodium hydroxide, and sodium silicate solution for scouring and bleaching, treated in a water bath, the fiber is taken out, washed, and dried, the scouring and bleaching cotton fiber is immersed in a modification treatment solution composed of HB (dried bark of Rutaceae plant) extract, AH (perennial herb of Compositae family) extract, and tannic acid, treated in a water bath, taken out after cooling, washed, and dried, to obtain modified cotton fiber; Step (2) Preparation of modified cotton fiber bamboo fiber spandex coated yarn The prepared modified cotton fiber is used as the outer covering yarn and spandex is used as the core yarn to prepare the covering yarn, the prepared modified cotton fiber, bamboo fiber and spandex covering yarn are soaked in a tetradecyl dimethyl benzyl ammonium chloride solution, and then the covering yarn is placed in an oven for drying to obtain the modified cotton fiber bamboo fiber spandex covering yarn; Step (3) Preparation of ZnO / QAS hybrid antibacterial coated yarn ZnONPs (zinc oxide) and QAS (quaternary ammonium salt) are added to DI (deionized water) of neutral silica sol, and ultrasonic dispersion is performed to obtain a ZnO / QAS hybrid antibacterial suspension. The modified cotton fiber bamboo fiber spandex coated yarn is then placed in the hybrid antibacterial suspension, taken out after being fully soaked, and then passed through a padding dyeing machine. The entire padding process is repeated and moisture absorption is maintained. After the padding process is completed, it is moved to an oven for drying and solidification to complete the chemical bond breaking and formation process. It is then washed with DI (deionized water) to remove the antibacterial agent weakly adhered to the surface of the cotton fabric, and finally dried to obtain the ZnO / QAS hybrid antibacterial coated yarn. Step (4) Preparation of high-density columnar loofah raw materials The loofahs with aged and shrunk ends and unclear layers are removed, and the middle part similar to a cylindrical shape is selected to cut the columnar body, and then rinsed with clean water and dried. Finally, the loofah is immersed in a mixed solution of NaOH and urea in a constant temperature and relative humidity chamber, and after being treated under the temperature conditions, it is washed with clean water to remove the alkali, and then dried, acid bathed, rinsed with clean water, dried, and placed in a constant temperature and humidity chamber to obtain a high-density columnar loofah raw material; Step (5) Preparation of ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling material The high-density columnar loofahs used for the preparation of mattress filling materials are compressed separately, and the compression time and pressure are confirmed to obtain compressed columnar loofahs, and then the compressed columnar loofahs are quilted into columnar loofah pads with the prepared ZnO / QAS hybrid antibacterial coated yarns, and multiple layers of columnar loofah pads are stacked and loaded into a fabric bag, and the fiber lignin is softened by hot pressing temperature to ensure the stability of the size of the columnar loofahs after compression, so as to obtain ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling materials; Step (6) Preparation of antibacterial and anti-mite healthy coated yarn mattress The prepared ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling material is covered on the thin sponge above the mattress spring layer, the entire mattress is covered with a fabric with good air permeability, the internal material is fixed by quilting, and a reinforcing belt is added to the edge to obtain an antibacterial and anti-mite healthy coated yarn mattress.

3. The preparation method of the antibacterial and anti-mite healthy coated yarn mattress according to claim 2 is characterized in that: Step (1) Preparation of modified cotton fiber The cotton fiber is placed in 15-30 g / L hydrogen peroxide (30-60%), 5-20 g / L sodium hydroxide, and 2-8 g / L sodium silicate solution for scouring and bleaching, and treated in a 100-130°C water bath for 1-2.5 hours. The fiber is taken out, washed, and dried. The scourged and bleached cotton fiber is immersed in a modification treatment solution composed of 5-20% HB (dried bark of Rutaceae plants) extract, 9-12% AH (perennial herb of Compositae family) extract, and 2-5% tannic acid, treated in a water bath, taken out after cooling, washed, and dried to obtain modified cotton fiber.

4. The preparation method of the antibacterial and anti-mite healthy coated yarn mattress according to claim 3 is characterized in that: Step (2) Preparation of modified cotton fiber bamboo fiber spandex coated yarn The prepared modified cotton fiber is used as the outer covering yarn and spandex is used as the core wire to prepare the covering yarn. The prepared modified cotton fiber, bamboo fiber and spandex covering yarn are immersed in a 0.5-2% by mass fraction tetradecyl dimethyl benzyl ammonium chloride solution for 2-3.5 hours, and then the covering yarn is placed in a 70-85 ℃ oven for drying for 2-3.5 hours to obtain the modified cotton fiber bamboo fiber spandex covering yarn.

5. The preparation method of the antibacterial and anti-mite healthy coated yarn mattress according to claim 4 is characterized in that: Step (3) Preparation of ZnO / QAS hybrid antibacterial coated yarn ZnONPs (zinc oxide) and QAS (quaternary ammonium salt) were added to 20-35 mL (2-5% neutral silica sol) of DI (deionized water), and ultrasonic dispersion was performed for 5-20 min to obtain a ZnO / QAS hybrid antibacterial suspension. The modified cotton fiber bamboo fiber spandex coated yarn was then placed in the hybrid antibacterial suspension, fully soaked for 15-30 min, and then taken out. Then, the yarn was passed through a padding dyeing machine (pressure of 0.2-0.8 MPa and speed of 15-30 rpm). The entire padding process was repeated 3-6 times and moisture absorption was maintained. After the padding process was completed, it was moved to a 60-75 °C oven for drying and cured at 140-155 °C for 3-6 min to complete the chemical bond breaking and formation process. It was then washed with DI (deionized water) to remove the antibacterial agent weakly adhered to the surface of the cotton fabric. Finally, it was dried at 60-75 °C to obtain the ZnO / QAS hybrid antibacterial coated yarn.

6. The preparation method of the antibacterial and anti-mite healthy coated yarn mattress according to claim 5, characterized in that: Step (4) Preparation of high-density columnar loofah raw materials Remove the loofahs that are aging, shrinking, and have unclear layers at both ends, select the middle part that is approximately cylindrical, cut into 50-80 mm columns, then rinse with clean water for 5-20 times and dry, finally, use a constant temperature and humidity chamber at a constant temperature of 20-35°C and a relative humidity of 65-80%, treat for 24-27 hours, immerse the loofahs in a mixed solution of 18-24% NaOH and urea at a treatment temperature of 80-95°C, after 30-60 minutes, wash with clean water to remove the alkali, then spin dry, take an acid bath for 8-14 minutes, rinse with clean water, dry, and put into a constant temperature and humidity chamber for treatment for 24-27 hours to obtain a high-density columnar loofah raw material.

7. The preparation method of the antibacterial and anti-mite healthy coated yarn mattress according to claim 6, characterized in that: Step (5) Preparation of ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling material The high-density columnar loofah used for the preparation of mattress filling materials is compressed to a height of 40-70%, and the compression time is confirmed to be 10-25 min and the pressure is 0.1-0.4 MPa to obtain a compressed columnar loofah. The compressed columnar loofah is then quilted into a 300-600 mm × 400-700 mm columnar loofah pad layer using the prepared ZnO / QAS hybrid antibacterial coated yarn. Multiple layers of columnar loofah pad layers are stacked and loaded into a fabric bag. The fiber lignin is softened at a hot pressing temperature of 50-80°C to ensure the dimensional stability of the columnar loofah after compression, thereby obtaining a ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling material.

8. The preparation method of the antibacterial and anti-mite healthy coated yarn mattress according to claim 7, characterized in that: Step (6) Preparation of antibacterial and anti-mite healthy coated yarn mattress The prepared ZnO / QAS hybrid antibacterial coated yarn columnar loofah mattress filling material is covered 5~8 cm on the thin sponge above the 0.9~1.8×1.8~2.4m mattress spring layer, and the entire mattress is covered with a fabric with good air permeability. The inner material is fixed by quilting with 1~1.6mm thread, and a reinforcing tape is added to the edge to obtain an antibacterial and anti-mite healthy coated yarn mattress.

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