3061results about "Special paper" patented technology

Apparatuses and processes for producing a substrate are described. A headbox is also provided. The headbox can include at least one flow section. The at least one flow section can include a constriction zone; a slice zone; an expansion zone; and a formation zone. A process for producing a web is also provided. The process can include depositing a slurry of fibers into a constriction zone. The slurry of fibers can then be flowed from the constriction zone through a slice zone and into an expansion zone. The slurry of fibers can then be flowed from the expansion zone into a formation zone. The slurry can be conveyed on a moving forming surface. Fluids may be drained from the slurry of fibers through the forming surface within the formation zone to form an embryonic web. The embryonic web may be dried.

The invention relates to the technical field of special papermaking and carbon fiber composite material preparation, in particular to high-air-permeability pitch-based carbon fiber base paper and a preparation technology thereof.The preparation method comprises the following steps that 1, pitch-based carbon fibers A are cleaned with diluted hydrochloric acid; dividing and brooming aramid fibers to obtain aramid pulp B; 2, performing wet forming on the pitch-based carbon fibers and the aramid pulp to obtain carbon fiber paper; and step 3, impregnating the pitch-based carbon fiber paper with phenolic resin, drying, and finishing to obtain the pitch-based carbon fiber base paper. The invention provides a novel method for preparing the high-air-permeability carbon fiber base paper through acid cleaning of carbon fibers, fibrillation of aramid fibers, wet forming of mixed pulp, resin impregnation strengthening and hot-pressing finishing, and the method comprises the steps that aramid pulp assists in interweaving, low-concentration resin strengthening is conducted, and the high-air-permeability carbon fiber base paper is obtained; the problem that strength, flexibility, high conductivity and high air permeability are difficult to consider at the same time is solved, and the high-air-permeability carbon fiber base paper and the preparation process thereof are provided.

Provided is an electroconductive sheet 10 comprising an aromatic polyamide pulp, a fluororesin, a carbon-based electroconductive substance, and an electrode catalyst. Also provided is a production method for the electroconductive sheet, the method comprising: a step X1, in which a slurry X1 including an aromatic polyamide pulp, a fluororesin, a carbon-based electroconductive substance, and an electrode catalyst is prepared and the slurry X1 is formed into a sheet by wet laying to obtain an electroconductive-sheet precursor X1; and a step Y1, in which the electroconductive-sheet precursor X1 is hot-pressed in air at a temperature of 100-350°C and a linear pressure of 10-50 N / m and thereafter fired in an inert gas at 200-500°C. Use may be made of a method in which either one of a slurry X2-1 containing no electrode catalyst and a slurry X2-2 containing the electrode catalyst is formed into a sheet by wet laying to obtain the electroconductive-sheet precursor, and the other slurry is formed into a sheet by wet laying on one surface of the electroconductive-sheet precursor.

The invention relates to the technical field of fuel cells, in particular to a preparation method of carbon fiber paper for a gas diffusion layer of a fuel cell. Comprising the following steps: adding phenolic resin, a dispersing agent, an anti-settling agent, asphalt and a graphitization template agent into a mixed solvent, and mixing and dispersing to prepare a resin impregnation liquid; and immersing the carbon fiber raw paper into the resin impregnation liquid for impregnation, drying, and then carrying out hot-pressing curing and graphitization treatment to obtain a final product. Part of phenolic resin is replaced with asphalt, a graphitization template agent is introduced, the graphitization temperature of the carbon fiber paper is reduced, the graphitization degree of resin carbon is improved, and the problems that asphalt and the graphitization template agent are difficult to disperse and easy to settle in phenolic resin impregnation liquid are solved by optimizing the formula of the resin impregnation liquid; according to the present invention, the asphalt, the phenolic resin and the graphitization template agent are loaded on the carbon paper body paper through the one-step impregnation, such that the advantages of simple process, low graphitization temperature and low energy consumption are provided, and the prepared carbon fiber paper has good conductivity.

The invention relates to a hybrid scrim / paste paper material for a plate-shaped battery electrode (2, 3) of a lead-acid battery, in particular for a positive plate-shaped battery electrode (2) of a lead-acid battery (1), wherein the scrim / paste paper material is designed as a nonwoven or woven mat and comprises: - fibers made of a first material which is chemically unstable, such that the fibers made of the first material dissolve at least substantially upon contact with an electrolyte of the lead-acid battery (1), in particular during the manufacture of the lead-acid battery (1); - fibers made of a second material which is chemically stable at least to the extent that the fibers made of the second material do not dissolve, or do not dissolve substantially, upon contact with the electrolyte of the lead-acid battery (1), in particular during the manufacture of the lead-acid battery (1);and - optionally a binding agent for the fibers from the second material;

The invention discloses a straw paper mulching film based on thermo-mechanical pulp as well as a green preparation method and application of the straw paper mulching film. The invention belongs to the field of biomass resource utilization. Aiming at the defects in the prior art, the invention provides a green preparation method of a straw paper mulching film based on thermo-mechanical pulp. According to the method, the staged hydrothermal grinding technology is adopted, washing is not needed, the acidic paper pulp is directly obtained, and the technological process is simplified. Meanwhile, the invention innovatively develops a green sizing agent taking chitosan as a main material. The sizing agent can be directly fused with acidic paper pulp, and acid and alkali do not need to be additionally added for adjusting the pH value. The dry tensile index of the straw paper mulching film is larger than or equal to 15 N.m / g, the wet tensile index is larger than or equal to 5 N.m / g, the burst index is larger than or equal to 3.5 kPa.m < 2 > / g, the contact angle is larger than or equal to 105 degrees, and the 2-hour water absorption rate is smaller than or equal to 50%.

A dispersion coated paperboard (1) for food packaging applications, the coated paperboard comprising a paper or paperboard substrate (2) having a first side (2a) and a second side (2b). The paper coated paperboard (1) further comprises a first layer (3) coated with a PHA dispersion, the first layer (3) being coated on at least one side (2a, 2b) of the paperboard substrate (2); and a second layer (4) coated with a PHA dispersion, said second layer (4) being coated on at least one of said first layers (3) wherein the crystallinity of the second layer (4) is higher than the crystallinity of the first layer (3).

The invention relates to the technical field of packaging materials, in particular to a high-strength corrugated carton based on polymer fiber material processing, and particularly relates to a corrugated carton achieving high strength and high waterproofness through polymer fiber material modification and special structural design. A polymer fiber material is soaked in a sodium hydroxide solution with a certain concentration, hydroxyl groups are introduced to the surface of the fiber, and the interface bonding force between the fiber and base materials such as starch is remarkably improved. According to detection, the bonding strength of the treated fibers and starch is improved by 30%-50%, so that the overall performance of the polymer fiber material layer is enhanced, in addition, compared with traditional corrugated waveforms, the UV composite waveforms are adopted, the compressive strength is improved by 20%-30%, the buffering performance is improved by 15%-20%, external impact force can be dispersed more effectively, and objects in the carton can be protected.

The invention relates to the technical crossing field of polyphenylene sulfide fiber paper, special papermaking and insulation paper, in particular to high-temperature-resistant polyphenylene sulfide fiber composite insulation paper and a preparation process thereof. The high-temperature-resistant polyphenylene sulfide fiber composite insulation paper with a dense structure similar to reinforcing steel bar-mortar is prepared by preferably selecting the polyphenylene sulfide fiber with higher cost performance as a raw material and taking the aramid fibrid as a filling agent and an adhesive and adopting a wet papermaking process. The prepared composite paper has excellent temperature resistance and chemical corrosion resistance, the production process flow is short, the production process is free of pollution, the industrial production cost of the composite paper can be reduced, the temperature resistance and chemical stability of medium-and-low-end application insulation paper are improved, the application field of the composite paper in a more severe environment is widened, and the composite paper has good application prospects. Good economic benefits and application values are realized.

The present invention discloses a tensile and wear-resistant washed kraft paper and its preparation process, which relates to the technical field of kraft paper. The process includes the following steps: Step 1: Add color paste, waterborne acrylic resin, preservative, reinforcing agent, softening agent, curing agent, and waterproofing agent into a solvent in sequence and stir evenly to obtain a sizing slurry; Step 2: Coat the sizing slurry on the base paper, and successively perform extrusion, ultraviolet light irradiation, first drying, ironing, and second drying to obtain the tensile and wear-resistant washed kraft paper. In this application, by preparing specific reinforcing agent and waterproofing agent and introducing them into the sizing slurry for sizing, the interfacial action between the sizing slurry and the base paper is effectively improved, thereby improving the tensile and wear resistance of the washed kraft paper while enhancing the flame retardant performance; it can achieve the purpose of replacing plastic, leather, and cloth with paper.

The invention relates to the technical field of composite non-woven fabrics, and discloses a composite non-woven fabric with a directional arrangement structure, the composite non-woven fabric comprises a first fiber web layer, a second fiber web layer and a third fiber web layer, the second fiber web layer is a yarn net structure formed by warp knitting and weft knitting of viscose long fibers, the first fiber web layer is provided with a plurality of first protrusions, and the third fiber web layer is provided with a plurality of second protrusions. At least one first guide hole penetrating through the fiber web layer is formed in an area enclosed by the plurality of first bulges; at least one part of fibers of the first fiber layer extend towards the direction of the second fiber layer and extend into the second fiber layer, and at least one part of fibers of the second fiber layer extend towards the direction of the third fiber layer and extend into the third fiber layer. Due to the fibers and the guide holes which are arranged directionally, the effects of improving the liquid absorption wetting speed of the composite non-woven fabric and shortening the drying time are achieved, energy is saved, the production efficiency is improved, and therefore the production cost is effectively reduced.

The invention provides a method for increasing the content and distribution uniformity of filler in paper sheets and increasing the strength of the paper sheets, and belongs to the technical field of papermaking. The method for improving the content and distribution uniformity of the filler in the paper sheet and increasing the strength of the paper sheet comprises the following steps: preparing a modified composite nanofiber dispersion liquid, preparing a positive electric buffer solution, preparing a positive electric composite slow release solution, preparing a filler particle suspension liquid, and mixing and manufacturing paper with pulp. According to the method for improving the content and the distribution uniformity of the filler in the paper sheet and improving the strength of the paper sheet, the flocculation speed of the filler can be mildly and effectively controlled, the size of floccules can be controllably adjusted, the distribution uniformity of the filler in the paper sheet can be improved while the content of the filler in the paper sheet is improved, and the paper sheet strength is improved. The adverse effect on the mechanical property of the paper sheet caused by filler dosage increase is effectively avoided, and the paper sheet strength is further improved.

The invention provides electronic paper carrier tape body paper and a surface sizing production method thereof, and relates to the field of carrier tape body paper. The surface sizing production method of the electronic paper carrier tape body paper comprises the following steps of slurry treatment, internal sizing, forming, primary press polish, surface sizing and secondary press polish. According to the electronic paper carrier tape body paper and the surface sizing production method thereof, the phenomenon that the electronic paper carrier tape body paper is prone to layering after being repeatedly wound for multiple times in subsequent processing and downstream use can be effectively solved, and the bonding strength between the layers of the body paper is effectively improved; the bonding matching property of the electronic paper carrier tape body paper and the hot-melting upper cover tape is optimized, and the possible galling or layering phenomenon in the process of stripping the hot-melting upper cover tape is avoided; the stripping stability is further improved, the stripping force fluctuation is reduced, the abrupt change of the stripping force is avoided, the accurate and stable control on the stripping force is realized, the range of the stripping force is effectively reduced, and the use performance of the electronic paper carrier tape body paper is further improved.

The invention discloses a multifunctional coated paper production device, which comprises four unreeling mechanisms, two unreeling mechanisms are a first PET film unreeling assembly and a second PET film unreeling assembly, and the rest two unreeling mechanisms are paper unreeling assemblies; the number of the winding mechanisms is two; the four co-extrusion mechanisms are respectively a first co-extrusion assembly, a second co-extrusion assembly, a third co-extrusion assembly and a fourth co-extrusion assembly. According to the multifunctional coated paper production device, the four unwinding mechanisms, the two winding mechanisms, the two extrusion mechanisms and the two co-extrusion mechanisms are arranged, so that PE films can be conveniently coated at different positions of paper, and the PE films and the PET films are connected in a co-extrusion mode to produce different types of composite coated paper, multiple production devices are not needed, and therefore the production cost is greatly reduced, and the production efficiency is improved. And meanwhile, the production occupied space is reduced.

The invention discloses base paper for aluminum spraying and a preparation method thereof, and relates to the technical field of base paper. The preparation method comprises the following steps: pulping softwood pulp, then adding deionized water to dilute the softwood pulp until the mass concentration is 0.8%-1%, then adding modified gel particles, modified bentonite and a PAE wet strength agent, adjusting the pH value to 6.5-7.5, stirring for 40-60 minutes, and then adding deionized water to dilute the softwood pulp until the mass concentration is 0.5%-0.7% to obtain mixed paper pulp; and then making the mixed paper pulp into paper sheets, squeezing, drying, coating the surface layer coating on the surface of base material paper, and drying with hot air to obtain the body paper for aluminum spraying. According to the invention, the modified gel particles and the modified bentonite are added, so that the mildew-proof and moisture-proof capabilities of the base paper for aluminum spraying are effectively improved; the introduction of the surface coating further improves the mildew-proof and moisture-proof capabilities. Therefore, the method has a wider application prospect.

The invention discloses silicon nitride microflower-nanowire double-layer composite heat-insulating aerogel paper and a one-step preparation method thereof, and belongs to the technical field of heat-insulating and fire-resistant silicon nitride aerogel paper. The composite heat insulation aerogel paper comprises silicon nitride microflowers and silicon nitride nanowires, the silicon nitride microflowers grow on the surface, close to the airflow scouring side, of the silicon nitride nanowire; in a three-dimensional space, the silicon nitride nanowires are mutually crossed and interlocked, and the silicon nitride microflowers and the silicon nitride nanowires are interlocked. The composite heat-insulating aerogel paper can solve the technical problem that the service life of the material is affected due to the fact that the existing silicon nitride nano material is easily damaged after being burnt at 600 DEG C for a long time (more than 70 minutes).

The invention provides a method for improving breakdown field strength and mechanical performance of insulation paper by mixing plant fibers and polymer fibers and the insulation paper. The method comprises the following steps: pulping a plant fiber pulp board to obtain plant fiber pulp; taking polymer fibers, and pulping the polymer fibers to obtain polymer fiber slurry; mixing and defibering the plant fiber pulp and the polymer fiber pulp to obtain mixed pulp; and carrying out papermaking on the mixed slurry, and then carrying out hot-pressing smoothing treatment to obtain the insulation paper. The breakdown field strength, the mechanical strength, the heat dissipation characteristic and the anti-aging characteristic of the high insulation paper can be effectively and synergistically improved.

The invention provides cellulose-based electronic carrier tape paper and a preparation method thereof, and the preparation method comprises the following steps: step (1): soaking a first wood pulp board in water until fibers are swelled, and pulping to obtain pulp; step (2), enabling the basalt nanosheet to react with polyvinylpyrrolidone, so as to obtain a carbonyl modified basalt nanosheet; (3) soaking the second wood pulp board in water until the second wood pulp board is completely defibered to obtain paper pulp, grinding the paper pulp, and carrying out micro-jet nano-homogenization treatment to obtain a cellulose nano-fibril suspension; and (4) uniformly mixing the cellulose nanofibril suspension, carbonyl modified basalt nanosheets and an antistatic agent with the slurry prepared in the step (1), forming a paper sample to obtain a wet paper sheet, and drying to obtain the cellulose-based electronic carrier tape paper. The cellulose-based electronic carrier tape paper prepared by the invention is obviously superior to the traditional electronic carrier tape paper in the aspects of environmental protection, cost, electrostatic protection and mechanical property.

The utility model discloses a high-strength corrugated board which comprises an outer-layer paper board and an inner-layer paper board and further comprises a plurality of reinforcing assemblies used for reinforcing a corrugated board body, the two sides of each reinforcing assembly are connected with a first supporting plate and a second supporting plate in an adhesion mode respectively, and the first supporting plate and the second supporting plate are connected with the outer-layer paper board and the inner-layer paper board in an adhesion mode respectively. The outer side wall of the first supporting plate is connected with a first UV-shaped corrugated paper core in an adhesive mode, the outer side wall of the second supporting plate is connected with a second UV-shaped corrugated paper core in an adhesive mode, and the outer-layer paper board and the inner-layer paper board are connected to the outer side wall of the first UV-shaped corrugated paper core and the outer side wall of the second UV-shaped corrugated paper core in an adhesive mode respectively. According to the corrugated board, the structural strength and the impact resistance of the corrugated board body are effectively improved by means of the hard reinforcing layers and the buffer layers, so that the corrugated board body has higher bearing strength, is not easy to damage when being collided by external force, and has a higher comprehensive practical effect.

The invention provides antireflection eye protection functional paper and a preparation method thereof. According to the preparation method, the coating with specific content components is adopted and matched with specific process steps, overall good interaction is achieved, compared with coated base paper, the diffuse reflection rates of the prepared anti-reflection eye-protecting functional paper are reduced by 10.07% at 315 nm and 6.77% at 400 nm respectively in a harmful blue-violet light area (400-480 nm) and an ultraviolet light area (especially UVA with the wavelength range of 315-400 nm), and the anti-reflection eye-protecting functional paper has the beneficial effects that the anti-reflection eye-protecting functional paper is good in anti-reflection effect and good in anti-reflection effect. The damage of harmful light to the retina of human eyes can be effectively reduced, and the effects of preventing myopia and protecting eyes are achieved; meanwhile, compared with coated raw paper, the reflectivity of the anti-reflection type eye protection functional paper is increased by 0.2% on the contrary within the 500-700 nm wave band comfortable for human eye reading, and the reading experience feeling of readers is further guaranteed.

There is provided a multi-layered paperboard (200, 300) comprising a first cellulose fibre-based layer (201, 301) and a second cellulose fibre-based layer (202, 302), which second layer (202, 302) has an inner surface facing in the direction of the first layer (201, 301) and an outer surface facing in the opposite direction, wherein the density of the second layer (202, 302) is below 550 kg / m3 and lower than the density of the first layer (201, 301) and wherein an additive (204, 304) selected from the group consisting of starch, fines, MFC, CMC and PVOH is added to the outer surface of the second layer (202, 302), with the proviso that no further cellulose fibre-based layer is provided on the outer surface of the second layer (202, 302).

The present invention discloses an aramid micro-nano particle, a preparation method and an application thereof in aramid paper. Monodisperse aramid micro-nano particles are prepared by using a polyisophthalamide (m-phenylene diamine) solution as a raw material and an electrostatic spraying method. When the aramid micro-nano particle is mixed with aramid short fibers and / or fibrils, the aramid micro-nano particle can fill the pores between the aramid short fibers and / or fibrils. Under the action of hot pressing, the particle melts and acts as a "bridging" particle to firmly bond adjacent aramid short fibers and / or fibrils, thereby improving the interfacial adhesion and cohesion, thereby giving the paper-based material excellent mechanical strength and electrical properties. The content and size of the aramid micro-nano particles are further controlled to obtain aramid paper with high tensile strength, high breakdown voltage and high dielectric constant. The mechanical and electrical properties of aramid fibers are fundamentally improved, so that the obtained aramid paper can be used in high-end applications while reducing the use of chemicals.

An aerosol-generating article is provided, including: an aerosol-forming substrate including plant material cut filler and between about 6 percent and about 20 percent of an aerosol-former, the plant material cut filler including at least 25 percent of plant lamina per weight of total plant material; and a laminated wrapper including a heat conductive layer and a heat insulating layer, the laminated wrapper being arranged at least partly wrapped around the aerosol-forming substrate and having a thickness of between 30 micrometers and 100 micrometers, and the heat conductive layer and the heat insulating layer overlapping along an axial direction of the aerosol-generating article.

The present invention relates to the technical field of decorative paper, and in particular to wood-based panel surface decorative paper, comprising print base paper and an adhesive film layer covering the surface of the print base paper. The adhesive film layer is made of impregnation glue liquid. The impregnation glue liquid comprises the following raw materials in parts by weight: 75-85 parts of modified polyurethane emulsion, 5-9 parts of an epoxy resin, 6-10 parts of a filler, 4-7 parts of nanocellulose, 2-3 parts of a silane coupling agent, 1.5-2.5 parts of a film-forming auxiliary agent, 0.2-0.3 parts of a defoaming agent, and 20-30 parts of water. The wood-based panel surface decorative paper comprises print base paper and an adhesive film layer covering the surface of the print base paper; the adhesion between the adhesive film layer and the print base paper is good; and the wood-based panel surface decorative paper has good wear resistance, good water vapor resistance, good cold and hot cycle resistance, and other properties, can reduce formaldehyde emission and is environmentally friendly.

The invention discloses a preparation method and application of chlorine dioxide preservative paper.The preparation method comprises the steps that starch, nanocellulose, hydrogen peroxide, ferric sulfate, distilled water and sodium hydroxide are mixed to obtain gelatinized starch, and then the gelatinized starch is mixed with water-based acrylic resin, casein, alkyl glycoside and ammonium persulfate to obtain composite starch glue; mixing sodium chlorite and composite starch glue to obtain fresh-keeping coating liquid A, and then coating the fresh-keeping coating liquid A on fresh-keeping base paper to obtain fresh-keeping coating liquid A paper; citric acid and distilled water are mixed to obtain fresh-keeping coating liquid B, and then fresh-keeping base paper is soaked in the fresh-keeping coating liquid B to obtain fresh-keeping coating liquid B paper; the fresh-keeping coating liquid A paper and the fresh-keeping coating liquid B paper are attached to obtain the chlorine dioxide fresh-keeping paper. The chlorine dioxide fresh-keeping paste is pasted on the inner side of the blueberry packaging box cover to keep the blueberries fresh. The chlorine dioxide preservative paper prepared by the invention can solve the problems of burst release and short retention time of chlorine dioxide, can reduce the problems of easy softening, rot and deterioration of picked blueberries, prolongs the shelf life of the blueberries, and improves the commodity value of the blueberries.

The invention provides a paperboard and a preparation method thereof. The preparation method comprises the steps that paper pulp is prepared, the paper pulp comprises core layer paper pulp, face lining layer paper pulp, face layer paper pulp and bottom layer paper pulp, and microfibrillated cellulose and chemical pulp are added to at least one of the face lining layer paper pulp and the bottom layer paper pulp to be ground together before grinding; making raw paper from the paper pulp; and coating surface glue on the surface of the surface layer of the body paper. According to the preparation method of the paperboard provided by the embodiment of the invention, the adding point of the MFC applied to the high-speed paper machine system is determined, the influence on the paper machine system is reduced, and dehydration of the pulp and operation of the paper machine are ensured. By combining the papermaking characteristics of a multi-layer paper machine, the surface lining layer and the bottom layer applied to the paper sheets can effectively improve the interlayer bonding strength between the paper sheets, improve TV-16, reduce the use amount of spraying starch in the conventional process or cancel the spraying starch, and improve the operation of the paper machine.

A process for foam forming webs is described herein. A foamed suspension of fibers is fed into a mixing chamber and then directed through a narrow constriction where the velocity of the foamed suspension of fibers is increased. From the narrow constriction, the foamed suspension of fibers enters a forming chamber which causes the foamed suspension of fibers to rapidly decrease in velocity. In one embodiment, for example, the foamed suspension of fibers undergoes a hydraulic jump resulting in significant fiber reorientation. Through the process, fiber orientation can be controlled. For example, webs can be produced that have comparable fiber orientation in the machine direction in comparison to the cross-machine direction.

The invention belongs to the technical field of environment-friendly paper materials, and provides environment-friendly fireproof flame-retardant paper and a preparation method thereof, and the environment-friendly fireproof flame-retardant paper is prepared from the following raw materials in parts by mass: 20-40 parts of alginate fiber, 50-80 parts of bamboo pulp fiber, 5-15 parts of a flame retardant, 2-5 parts of chitosan, 1-3 parts of nano silicon dioxide and 200-400 parts of water. The alginate fibers and the bamboo pulp fibers are used as main raw materials, and the phosphorus-nitrogen environment-friendly flame retardant and the modified magnesium hydroxide are compounded, so that the dual effects of natural flame retardance and chemical synergy are achieved; according to the invention, the flame retardant and the fibers are synchronously beaten, so that nonuniformity and agent waste caused by later-stage coating are avoided; the environment-friendly fireproof flame-retardant paper is prepared from environment-friendly materials, volatile organic compounds are not discharged in the whole process, the paper can be recycled and degraded, the binding force between modified magnesium hydroxide and fibers is high, and the physical performance of the paper can be further improved.

The invention discloses a preparation process of environment-friendly dispersible spunlace non-woven fabric, which comprises the following steps: mixing materials, forming a net, drying, rolling and compounding, namely compounding a first taper hole non-woven fabric and a second taper hole non-woven fabric, and fitting the v surface of the first taper hole non-woven fabric with the v surface of the second taper hole non-woven fabric, thereby obtaining the environment-friendly dispersible spunlace non-woven fabric. The first taper hole non-woven fabric and the second taper hole non-woven fabric are welded through welding equipment, welding points distributed in an array mode are formed, and the composite spunlace non-woven fabric is obtained. In addition, the functional solution is sprayed on the surface of the spunlace non-woven fabric, and the wet toilet paper is obtained. According to the preparation process of the environment-friendly dispersible spunlace non-woven fabric and the wet toilet paper, the problem of manure penetration is reduced, the dispersible effect is improved, and the wet toilet paper is more environment-friendly to use.

The invention discloses a paper base-PHA double-sided composite soil biodegradable agricultural mulching film as well as a preparation method and application thereof, and belongs to the technical field of agricultural mulching materials and green high polymer materials. The mulching film comprises a paper base layer and a homologous polyhydroxyalkanoate covering layer arranged on the surface of the paper base layer. Through double-sided synergy of the water-based PHA coating on the soil sticking surface and the thermoplastic PHA extrusion film layer on the windward and rainy surface, and in combination with a'wet-to-heat 'integrated composite process and trace anhydride grafting, super-strong combination of a paper-plastic interface fiber tearing level is realized, and the problem that traditional paper-plastic is easy to layer is solved. Compared with a traditional fluorine-containing product, on the premise that total organic fluorine is not detected, the excellent barrier and moisture conservation performance is achieved with the thinner coating thickness by means of double barriers. The product has excellent mechanical laying adaptability and long-season weather resistance, is fully biodegradable, thoroughly solves the hidden dangers of micro-plastic residues and persistent organic pollutants, and is an ideal green agricultural covering material.