137results about "Biocidal agent addition" patented technology

The invention discloses a polyhydroxyalkanoate water-based barrier coating composition and application, and belongs to the technical field of packaging materials. The composition takes water as a dispersion medium and comprises polyhydroxyalkanoate, a plasticizer, an emulsifier and an inorganic nano filler. The stable emulsion with the volume average particle size of 400-700nm is prepared under specific proportioning and process conditions. After the emulsion is applied to a paper substrate according to the dry film coating weight of 10-12 g / m, the obtained coating shows good comprehensive performance: the oxygen permeability is not higher than 580 cm / m.d, the water vapor permeability is not higher than 290 g / m.d, and the heat sealing strength at 130 DEG C is not lower than 5.0 N / 15 mm. The biodegradable paper-based packaging film does not contain fluorine compounds, can be completely biodegraded, and provides a technical path for sustainable paper-based packaging.

The invention discloses a bacteriostatic and antiviral bamboo pulp paper-based sanitary isolation bag as well as a preparation method and application thereof, and belongs to the field of functional paper-based packaging materials. The isolation bag takes bamboo pulp fiber paper as a base material, and the surface of the isolation bag is coated with a water-based polyhydroxyalkanoate functional coating. According to the preparation method, a special polyphenol derivative-chitosan quaternary ammonium salt-nano zinc oxide organic-inorganic hybrid factor is introduced, and the problem of agglomeration of nano particles is effectively solved by utilizing the special bridging effect of polyphenol, so that high-density cation capture and oxidation inactivation sites are constructed on the surface of the coating. Compared with the prior art, the method has the advantages that the method does not need to depend on organic fluorine compounds, and the excellent waterproof and oil-proof barrier effect and the efficient inactivation of viruses can be achieved only through the extremely low coating amount. In addition, the isolation bag has unique environmental chemical responsiveness, can be efficiently dissociated under the alkaline condition to facilitate repulping recovery, can be completely biodegraded in the natural environment, and perfectly considers the requirements of biological safety protection and green environmental protection.

The invention relates to the technical field of agricultural paper, in particular to double anti-mite fruit cultivating bag paper and a preparation method thereof. The preparation method comprises the following steps: pulping: respectively pulping natural-color bamboo pulp and natural-color softwood pulp, then mixing, adding water, and uniformly mixing to obtain pulp; papermaking: sequentially adding iron oxide yellow, aluminum sulfate, rosin size and a wet strength agent into the pulp, adding water for dilution, and drying after papermaking to obtain fruit cultivating bag body paper; sizing: taking oxidized cassava starch, adding water, preparing starch slurry, heating, continuously stirring until the starch is completely gelatinized, taking starch gelatinized liquid, adding neem oil, putting into a high-speed homogenizing emulsifying machine, emulsifying to obtain neem oil anti-mite emulsion, uniformly mixing the neem oil anti-mite emulsion with wax emulsion to obtain anti-mite glue liquid, immersing the fruit cultivating bag body paper into the anti-mite glue liquid, and drying to obtain the fruit cultivating bag. And taking out and drying to obtain the double anti-mite fruit cultivating bag paper. The composite material has physical barrier and long-acting anti-mite functions, and the risk of insect attack invasion is greatly reduced.

The invention provides multifunctional composite fiber reinforced decorative base paper and a preparation method thereof. The decorative base paper is prepared from the following raw materials in parts by weight: 30-60 phr of wood pulp fibers, 15-35 phr of bamboo fibers, 1-10 phr of polyester fibers, 1-10 phr of polyamide fibers, 57-91 phr of an antibacterial reinforcing agent, 3-20 phr of a flame retardant and 1-10 phr of nano cellulose. The antibacterial reinforcing agent is prepared from the following components in parts by weight: 1 to 5 phr of silver nitrate, 3 to 10 phr of tetrabutyl titanate, 2 to 8 phr of sulfydryl modified chitosan, 50 to 70 phr of absolute ethyl alcohol and 2 to 6 phr of plant essential oil; the flame retardant is a composition of ammonium polyphosphate and aluminum hydroxide wrapped by chitosan. According to the invention, the composite fiber prepared by compounding four fibers is used, and the antibacterial agent, the flame retardant and the nano cellulose are added to supplement functionality, so that the multifunctional composite fiber reinforced decorative base paper with high strength, excellent wear resistance and excellent antibacterial performance is obtained, and the fireproof performance of the multifunctional composite fiber reinforced decorative base paper reaches the national B1-level fireproof standard.

The invention provides a preparation method of environment-friendly straw paper with hydrophobic and lip-sticking-free properties. The preparation method comprises the following steps: respectively pulping bleached softwood pulp and bleached hardwood pulp, and mixing to obtain a fiber mixture; adding a biological wax waterproof system sizing agent into the fiber mixture, or adding the biological wax waterproof system sizing agent and an antibacterial agent, and adding a wet strength agent and an alkyl ketene dimer, and carrying out net forming treatment; the preparation method comprises the following steps: carrying out squeezing dehydration and primary drying treatment on paper pulp subjected to net forming treatment, carrying out surface coating and sizing by adopting a sizing system containing a biological wax waterproof system sizing agent, carrying out secondary drying treatment, and finally sequentially carrying out calendering and coiling to obtain the environment-friendly straw paper. Experiments show that the straw paper disclosed by the invention has the advantages of excellent hydrophobicity, no lip sticking, high strength, high antibacterial property, complete degradability, no toxicity and environment friendliness.

The invention discloses a packaging box special for medical treatment, and relates to the field of packaging boxes for medical treatment. The plant fiber composite material is prepared from the following raw materials in parts by weight: 80-95 parts of plant fiber slurry, 3-10 parts of chitosan, 5-15 parts of polylactic acid, 1-5 parts of nano silicon dioxide, 0.5-3 parts of an environment-friendly water repellent agent, 2-8 parts of reinforced fibers, 3-8 parts of a reversible moisture absorption phase change material and 0.1-0.5 part of a degradation indicating pigment. The plant fiber slurry is adopted as a bio-based framework, chitosan microfibers, polylactic acid, nano silicon dioxide, a reversible moisture absorption phase change material and other functional components are innovatively introduced, and an antibacterial trigger layer and degradation indication pigment on the inner surface are matched, so that the packaging box keeps good mechanical strength and structural stability, and meanwhile the packaging box has the advantages that the packaging box is not prone to deformation, and the service life is prolonged. And multiple functions of active on-demand antibiosis, dynamic humidity adjustment, visual degradation tracking and full bio-based degradability are achieved.

The invention discloses an antibacterial and bacteriostatic bamboo-wood fiber-based food material packaging box and a preparation method thereof, and relates to the technical field of packaging materials. The packaging box is composed of a paper base layer and an antibacterial coating on the surface of the paper base layer. Wherein the paper base layer is made of mixed paper pulp; the antibacterial coating is obtained by coating the surface of the paper base layer with an antibacterial coating; the antibacterial coating is prepared from the following raw materials in parts by mass: 30 to 40 parts of deionized water, 2 to 2.4 parts of polyvinyl alcohol, 1.2 to 1.5 parts of glycerol, 6.7 to 7.3 parts of antibacterial particles, 0.1 to 0.4 part of rosmarinic acid and 0.5 to 0.8 part of modified silicon dioxide; the antibacterial particles are formed by mesoporous carrier materials loaded with wormwood essential oil. Due to the introduction of components such as the antibacterial particles and the modified silicon dioxide, the long-acting antibacterial, waterproof and fresh-keeping capacities of the bamboo-wood fiber-based food material packaging box are effectively improved. Therefore, the method has a wide application prospect.

The invention discloses a preparation method of a high-strength water-resistant special functional paperboard, and belongs to the technical field of papermaking, the high-strength water-resistant special functional paperboard sequentially comprises a surface sizing layer, a surface paper layer, a core paper layer, a bottom paper layer and a bottom sizing layer from top to bottom, and the surface paper layer, the core paper layer and the bottom paper layer are made of waste paper pulp. The surface sizing layer and the bottom sizing layer are made of environment-friendly glue, through the surface paper layer, the core paper layer and the bottom paper layer, the functional paper has higher paperboard physical strength and better water resistance, and the functional paper is environmentally friendly, efficient and remarkable in superiority.

This invention relates to a surface antibacterial method for cardboard boxes used for fruit preservation, belonging to the field of cardboard coating technology. The method involves preparing a base solution, curing and modifying capsules, and treating with a treatment solution to obtain a coating liquid. This coating liquid is then applied to the surface of the cardboard box to obtain a cardboard box with surface antibacterial properties for fruit preservation. Through intermolecular interactions, the connection between the coating and the cardboard box surface is innovatively strengthened, as well as the connection between the antibacterial components and the porous capsules, achieving long-lasting antibacterial effects and resulting in excellent fruit preservation.

This invention discloses a method for preparing zero-VOCs degradable seedling paper, comprising the following steps: S1, raw material selection: the fiber raw material includes 75-85% cattail and 15-25% reed by mass fraction; S2, the fiber raw material described in S1 is sequentially processed through the following steps: cattail + reed → vertical cooking → closed screening → pulp washing → oxygen delignification → pulp concentration → unbleached chemical straw pulp → storage tower → extruder → high-consistency mill → anti-fouling tank → conical refiner → pulp mixing tank → pulp forming tank → sand removal → screening → wire forming → pressing → pre-drying → surface sizing → post-drying → calendering, to obtain seedling paper that meets the requirements for ecological agricultural paper. The seedling paper obtained by this invention has good air permeability and high dry and wet strength, weather resistance to wind and rain erosion and trampling, can achieve natural microbial degradation in soil, and all raw materials are zero-VOCs degradable and sustainable, making it green, environmentally friendly and harmless to the soil.

The invention provides mildew-proof decorative paper as well as a preparation method and application thereof, and relates to the field of mildew-proof decorative paper. The preparation method of the mildew-proof decorative paper comprises the following steps: preparing a core-shell composite particle dispersion liquid, preparing a mildew-proof agent, and mixing and manufacturing paper with pulp. According to the preparation method of the mildew-proof decorative paper, the problem that the whiteness, the opacity, the mechanical strength and the weather resistance of the mildew-proof decorative paper are influenced by directly adding the mildew preventive can be effectively avoided, and the whiteness, the opacity, the mechanical strength and the weather resistance of the mildew-proof decorative paper are effectively improved; and the surface smoothness, the veneer glue penetration grade, the veneer peel strength and the water-resistant and mildew-proof performance of the veneer artificial board prepared from the wood-plastic composite material are further improved.

Provided are a bacterial nanocellulose transparent film, a manufacturing method thereof, and a packaging material including a food packaging material or an electronic product packaging material using the same capable of newly manufacturing a bacterial nanocellulose transparent film with an oxygen barrier property, a moisture barrier property, or a UV barrier property by performing electron beam irradiation and a film process on bacterial cellulose.

The invention relates to a mildewproof agent, a preparation process and a preparation method of mildewproof bond paper, and belongs to the technical field of mildewproof agent preparation. According to the mildew preventive disclosed by the invention, composite zirconium phosphate is taken as a carrier, mould permeation is physically blocked through a layered structure, and zinc ions and epsilon-polylysine are slowly released, so that a multi-dimensional long-acting antibacterial effect is realized; the styrene-acrylic emulsion base material and the silane coupling agent construct a brick-mud interpenetrating network structure, so that the oxygen permeability of the coating is reduced, and mould permeation is further prevented. According to the preparation method of the mildew-proof bond paper, N2 / CF4 mixed plasma treatment is adopted, so that the surface energy of the paper is improved, meanwhile, a fluorocarbon group and a silane coupling agent form a covalent bond, the interface bonding strength is improved, and uniform permeation of a mildew-proof agent is promoted; according to the gradient drying process, through three-stage temperature control, the internal stress of the coating is reduced, and the silane crosslinking degree and the water resistance are improved. Through collaborative innovation of a mildew inhibitor formula and a preparation method, the mildew inhibition rate of the mildew inhibitor is enhanced, and meanwhile, the loading efficiency of the mildew inhibitor is improved compared with that of a traditional process.

The invention relates to the technical field of decorative paper, and discloses high-strength antibacterial decorative paper and a preparation method thereof. The preparation method comprises the following steps: mixing and reacting a waterborne polyurethane prepolymer with antibacterial functional polyether to obtain a waterborne polyurethane-polyurea prepolymer; carrying out an imidazole end-capping reaction on the waterborne polyurethane-polyurea prepolymer, and neutralizing and emulsifying to obtain an antibacterial impregnation liquid; and dipping decorative raw paper in the antibacterial dipping liquid, taking out the decorative raw paper, and drying the decorative raw paper to obtain the high-strength antibacterial decorative paper. The decorative paper is high in strength, excellent in wear resistance and excellent in antibacterial property, and a veneer prepared from the decorative paper as a veneer material is high in bonding strength.

This invention relates to a composition having antibacterial properties, particularly biocidal properties, for use as a surface coating of paper layers or material boards, wherein the composition comprises: at least one formaldehyde resin, particularly melamine-formaldehyde resin; at least one compound of general formula (I), R 1 SiX3(I), where X is an alkoxy group and R 1 It is an organic residue selected from C1-C10 alkyl groups, wherein the C1-C10 alkyl group can be interrupted by -O- or -NH-, and wherein R 1 The composition comprises at least one functional group Q1, said functional group being selected from amino groups, methacrylic acid groups, methacrylic acid oxy groups, vinyl groups, and epoxy groups; at least one other compound of general formula (II), SiX4(II), wherein X is an alkoxy group; and at least one antibacterial active substance, particularly at least one biocidal agent. The invention also relates to the use of this composition and to paper layers or engineered wood panels having this composition.

The application relates to the technical field of antibacterial and antiviral plates, and discloses a composite antibacterial and antiviral plate and a composite antibacterial and antiviral agent, which comprises two substrates, the two substrates are provided with balance layers at one end, adhesive agents are arranged between the two substrates and the two balance layers, and antibacterial and antiviral impregnated decorative papers are arranged between the two balance layers. The composite antibacterial and antiviral plate is formed by combining various antibacterial and antiviral technologies to form a novel composite antibacterial and antiviral agent. Compared with general antibacterial or antiviral plates, the antibacterial and antiviral plate has a synergistic effect, and the performance of single antibacterial or antiviral function is increased by 30%. Meanwhile, the antibacterial and antiviral components are more uniformly dispersed in the system through synergistic effect and porous nano structure, and the consumption of effective components is reduced through ion replacement effect, so that the effect of slow release of effective components is achieved, and the antibacterial and antiviral service life is prolonged.

The application provides a bacterial cellulose sheet and a preparation method and application thereof, and the preparation method comprises the following steps: modifying bacterial cellulose homogenate by using a modifier to obtain modified bacterial cellulose homogenate; mixing the modified bacterial cellulose homogenate with fiber pulp to obtain on-loom pulp, and forming by papermaking to obtain the bacterial cellulose sheet; and the dry weight content of bacterial cellulose in the bacterial cellulose sheet is 30-90%. The bacterial cellulose sheet is prepared by regulating the particle size and content of bacterial cellulose, the performance indexes of the compounded fiber pulp and the parameters of the forming net material, so that the problem of poor water filtration and strong adhesion of the compounded pulp in the papermaking process and the problem of inability to release paper are solved, the papermaking process is suitable for continuous production equipment such as a paper machine, and the continuous and industrial production of the bacterial cellulose sheet is realized.

A method for controlling papermaking, comprising: monitoring the liquid level of a fibrous suspension in a reservoir (302); identifying that the liquid level has dropped so as to meet at least one empty criterion (303), and then identifying that the liquid level has risen so as to meet at least one replenishment criterion; and starting to administer a biocide to the fibrous suspension flowing into the reservoir in response to identifying that the liquid level has risen so as to meet at least one replenishment criterion. A corresponding device and computer program are also disclosed.

The invention relates to the technical field of wallpaper preparation, and discloses flame-retardant mildew-proof wallpaper and a preparation method thereof. The preparation method of the flame-retardant and mildew-proof wallpaper comprises the following steps: reacting isocyanate propyl triethoxy silane with 4-aminoazobenzene to obtain a modified coupling agent; the preparation method comprises the following steps: preparing mesoporous starch-based nanospheres by taking short-chain glucose and chitosan as raw materials; the preparation method comprises the following steps: treating mesoporous starch-based nanospheres through a modified coupling agent, and loading vanillin to obtain loaded modified nanospheres; the preparation method comprises the following steps: preparing aerogel particles by taking g-C3N4 powder, gamma-glycidyl ether oxypropyl trimethoxy silane and bacterial cellulose as raw materials; reacting the loaded modified nanospheres with aerogel particles to obtain modified aerogel particles; forming an ink layer on one side of the flame-retardant base layer through a printing process to obtain a wallpaper semi-finished product; and coating the semi-finished wallpaper product with the mildew-proof layer slurry to obtain the flame-retardant mildew-proof wallpaper. The flame-retardant and mildew-proof wallpaper disclosed by the invention has the properties of flame retardance, bacteriostasis, mildew prevention and air purification, and can emit fragrance for a long time.

The present disclosure relates to a sterilising paper for wrapping a medical device, i.e. A barrier against microorganisms, a method for preparing the sterilising paper and the use of the sterilising paper as a sterile barrier system for wrapping a medical device.

The present invention provides certain paper enhancing compositions, typically aqueous compositions, for use in the manufacture and coating of paper, and paper products. The paper enhancing compositions provide certain paper processing advantages and distinct final paper product characteristics. The present invention further provides carbonate enhancing composition useful for preparing enhanced carbonate compositions used in the paper manufacturing processes.

This invention belongs to the field of papermaking technology, specifically relating to a coating for improving doctor blade marks on coated white cardboard and its preparation method. The coating for improving doctor blade marks on coated white cardboard includes the following raw materials: calcium carbonate grade 95 slurry, kaolin slurry, latex, CMC slurry, dispersant, lubricant, water-resistant agent, bactericide, defoamer, and alkaline solution. The preparation method of the CMC slurry is as follows: water and CMC are added to a reaction vessel, the temperature is raised, and the mixture is stirred, controlling the solid content of the CMC slurry at 10-12% and the viscosity at 2500-3000 cps. This invention controls the static water retention value of the coating to 120-130 g / m³ by controlling the solid content and viscosity of the CMC slurry during preparation. 2 This improved the problem of scraper marks caused by coating during the production of white cardboard; by controlling the order of raw material feeding, coating viscosity and water retention value, the dispersibility of the coating was improved, further improving the problem of scraper marks caused by coating during the production of white cardboard.

This invention discloses a high-efficiency disinfection air filter paper and its preparation method, relating to the field of filter material technology. The invention first utilizes ethylene (chloromethyl)dimethoxysilane to modify nano-titanium dioxide, N-(2,3-epoxypropyl)phthalamide, and chitosan to generate an antibacterial agent. This agent is then copolymerized with N-hydroxymethylacrylamide and acrylamide to form an antibacterial emulsion. A multi-layer polyvinylidene fluoride nanofiber composite membrane is then prepared by combining a scaffolded polyvinylidene fluoride fiber membrane with an ultra-fine polyvinylidene fluoride fiber membrane, achieving a low-resistivity filter paper. Finally, the antibacterial emulsion is sprayed onto the surface, promoting the fixation of the modified titanium dioxide onto the substrate surface and improving the filter paper's burst resistance. The filter paper prepared by this invention exhibits antibacterial, burst-resistant, and low-resistivity properties.

The invention discloses antibacterial toilet paper and a processing method thereof, and particularly relates to the technical field of papermaking. The antibacterial toilet paper is composed of a natural antibacterial agent, a modified inorganic antibacterial agent, microcapsules and optimized paper pulp, the natural antibacterial agent comprises a wormwood extract and a honeysuckle extract, the modified inorganic antibacterial agent is nano zinc oxide with hydroxyl grafted on the surface, and the microcapsules are chitosan microcapsules. The processing method of the antibacterial toilet paper comprises the steps of pulp pretreatment and enzymolysis pulping, ultrasonic dispersion and coupling of a composite antibacterial agent, mixed pulp reaction, fourdrinier papermaking forming, low-temperature drying and micro-calendering, surface chitosan solution spraying treatment and silicone oil dipping treatment. Through the synergistic effect of a natural-inorganic composite antibacterial system, microcapsule coating slow release and fiber surface modification treatment, firm adhesion and uniform distribution of an antibacterial agent are achieved, the antibacterial durability, broad spectrum and use safety of the antibacterial toilet paper are remarkably improved, and meanwhile the good physical performance and soft touch feeling of the paper are kept.

The present invention concerns a process for the production of packaging for the preservation of food products, the packaging thus obtained consisting of a cellulosic support such as, for example, paper or cardboard, coated with a layer of preferably acrylic or styrene / acrylic polymer resin, in which anionic clays are dispersed, preferably hydrotalcite, intercalated with active molecules.

The application belongs to the technical field of papermaking, and particularly relates to a domestic fiber anti-fake coated cigarette card paper and a production process thereof. The domestic fiber anti-fake coated cigarette card paper comprises a base paper layer, a coating layer and a back adhesive layer. The base paper comprises a surface layer, a core layer and a bottom layer. The anti-fake domestic fiber accounts for 4-6% of the surface layer, 1-3% of the core layer and 6-9% of the bottom layer. The coating layer is coated on the surface layer and is divided into three layers, i.e., a pre-coating layer, a middle coating layer and a surface coating layer. The back adhesive layer is coated on the bottom layer. The application adds the anti-fake domestic fiber with different proportions in three layers to form a unique texture on the paper plane. The three-dimensional fiber texture with different levels and different brightness can be observed through light. The anti-fake fiber on the surface layer of the paper surface is greater than or equal to 50 per 55*22 mm, and the anti-fake fiber on the bottom layer is greater than or equal to 140 per 55*22 mm. The prepared coated cigarette card paper can be effectively distinguished from ordinary white card paper and has the anti-fake function.

The present invention provides certain paper enhancing compositions, typically aqueous compositions, for use in the manufacture and coating of paper, and paper products. The paper enhancing compositions provide certain paper processing advantages and distinct final paper product characteristics. The present invention further provides carbonate enhancing composition useful for preparing enhanced carbonate compositions used in the paper manufacturing processes.

The invention discloses a fluoride-free waterproof agent with an antibacterial function as well as a preparation method and application of the fluoride-free waterproof agent. The fluoride-free waterproof agent with the antibacterial function is prepared from the following components in parts by mass: 100 parts of a monomer, 1 to 3 parts of an initiator, 2 to 4 parts of a surfactant, 1 to 2 parts of a chain transfer agent, 50 to 100 parts of a cosolvent and 200 to 400 parts of water, wherein the monomers are prepared from the following components in parts by mass: 20 to 30 parts of organic silicon monomers, 6 to 10 parts of antibacterial functional monomers, 30 to 40 parts of acrylic acid long-chain aliphatic hydrocarbon monomers, 3 to 7 parts of self-crosslinking monomers and 13 to 41 parts of other acrylate monomers. The surfactant is a mixture of a cationic surfactant and a nonionic surfactant. The fluoride-free waterproof agent disclosed by the invention can be applied to surface modification of fiber materials such as textiles, paper and non-woven fabrics, can endow excellent waterproof performance and broad-spectrum antibacterial performance, and has a wide application prospect.

The invention relates to a method for manufacturing a fibrous web, such as web of paper, board, tissue or the like. The method comprises forming an aqueous fibre suspension comprising cellulosic fibres from one or more raw material flows, and applying at least one chemical and / or physical control measure to the aqueous fibre suspension or at least one of its raw material flows for control of microbial activity in the aqueous fibre suspension or the raw material flow before an inlet of an intermediate residence entity, such as storage tower or broke tower, which has a delay time of at least one hour, preferably at least two hours. In this manner a starting ORP value for the aqueous fibre suspension is obtained. The aqueous fibre suspension in the intermediate residence entity at least the minimum delay time, and a final ORP value is measured for the aqueous fibre suspension after an outlet of the said intermediate residence entity but before the formation of the fibrous web. An ORP difference value between the starting ORP and final ORP values is calculated, and if the ORP difference value exceeds a pre-determined threshold value, then adjusting the applied chemical and / or physical control measure(s) until the ORP difference value falls below the pre-determined threshold value. Finally, the aqueous fibre suspension is formed into a fibrous web and dried.

The invention provides antibacterial formaldehyde-free decorative base paper and a preparation method thereof, and relates to the technical field of decorative base paper preparation, the antibacterial formaldehyde-free decorative base paper comprises the following raw materials by weight: 50-70 parts of softwood pulp fiber, 20-50 parts of hardwood pulp fiber, 20-40 parts of titanium dioxide, 2-5 parts of chitosan-guanidine salt microspheres, 2-5 parts of an antibacterial synergist, and 1-3 parts of a stabilizer. By introducing a chitosan-guanidine salt microsphere sustained-release system, the cost is controlled, the whiteness stability is improved, and a long-acting antibacterial function is realized; by optimizing the ZnO-TiO2 heterojunction ratio and combining with the air suspension spraying and photocuring process, the photocatalytic activity and the antibacterial agent distribution uniformity are enhanced, the antibacterial efficiency is synchronously improved, and VOC emission is reduced; the waterborne polyurethane partially replaces melamine resin and cooperates with the formaldehyde catching agent, so that formaldehyde release is effectively inhibited.