268results about "Pulp beating methods" patented technology

The present invention belongs to the technical field of special paper preparation, and particularly relates to a production method of high-strength aluminized base paper, comprising the steps of: S1, beating: respectively beating long-fiber primary pulp and short-fiber primary pulp, wherein the beating degree of the long fiber is 40-50°SR, and the beating degree of the short fiber is 20-30°SR; S2, adding additives: adding modified inorganic filler, cationic starch and retention aid to the short-fiber pulp; S3, pulp mixing: mixing the long-fiber pulp and the short-fiber pulp according to a weight ratio, and then adding modified bamboo fiber, and uniformly stirring to form a mixed pulp; S4, wire drawing and papermaking; S5, spraying a surface treatment agent; S6, paper drying, calendering and winding. The aluminized base paper obtained by the production method of the high-strength aluminized base paper of the present invention has the advantages of high strength and good smoothness.

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 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 relates to the technical field of aramid fiber recycling, high-performance fiber modification and functional fiber reinforced materials, in particular to recycled aramid pulp with mechanical force induced brooming and a preparation method of the recycled aramid pulp. The preparation method comprises the steps of physical screening, chemical stripping pretreatment, thread rolling, pulping, pulping mechanical force coupling, stepped heating drying and opener secondary delinting, and the prepared high-quality aramid pulp is applied to the fields of automobile friction materials, high-performance sealing products and special rubber composite materials. The problems that traditional recycled fibers are poor in dispersity, insufficient in specific surface area and weak in matrix interface bonding can be effectively solved.

The utility model relates to wood fiber deep treatment equipment for papermaking, which comprises a fiber separator and a high-temperature and high-concentration beater, a long fiber output port of the fiber separator is in butt joint with an input port of the high-temperature and high-concentration beater, and a heating pipe is wound in the wall of the high-temperature and high-concentration beater. And the output end and the input end of the heating pipe are communicated with external heating equipment. When the wood fiber deep treatment equipment for papermaking is used, long fibers are separated out through the fiber separator and are conveyed and placed in the high-temperature and high-concentration beating machine, and then the heating pipe is adopted to heat the interior of the high-temperature and high-concentration beating machine, so that high-temperature and high-concentration beating treatment is carried out on fibers with high lignin content; the fiber quality is stabilized, and the problems of high energy consumption and fiber damage caused by conventional normal-temperature low-concentration disc mill pulping are avoided.

The utility model discloses a paper pulp preparation device which comprises a dissolving tank, a constant volume tank, a white water tank and a mixing and dissolving tank, the dissolving tank, the constant volume tank and the mixing and dissolving tank are respectively provided with a liquid outlet, the liquid outlet of the dissolving tank is communicated with the interior of the constant volume tank, a first valve is arranged at the communication position, the liquid outlet of the constant volume tank is communicated with the interior of the mixing and dissolving tank, and a second valve is arranged at the communication position. The white water tank is provided with a water outlet, the water outlet of the white water tank is communicated with the dissolving tank and the constant volume tank, a third valve is arranged at the communication position, a liquid outlet of the mixing and dissolving tank is communicated with the paper machine, a fourth valve is arranged at the communication position, and the dissolving tank is used for adding papermaking filler and white water for pre-dissolving to prepare a filler solution; the constant volume tank is used for adding a filler solution and white water to make the volume of the filler solution constant to a preset concentration, and the mixing and dissolving tank is used for adding papermaking fibers and the constant-volume filler solution and uniformly mixing to prepare paper pulp, so that the papermaking filler, the papermaking fibers and the white water can be conveniently and continuously uniformly mixed to obtain the paper pulp.

The invention discloses a preparation method of high-color-fastness woven body paper and the high-color-fastness woven body paper, and relates to the technical field of papermaking, and the preparation method of the high-color-fastness woven body paper comprises the steps of preparing a composite dyeing assistant and preparing the woven body paper. The preparation method comprises the following steps: stirring and mixing cationic microcrystalline cellulose, sodium carboxymethyl cellulose, triethanolamine myriceate, glucan hydroxypropyl trimethyl ammonium chloride, a water-based polycarbodiimide cross-linking agent and deionized water to obtain a composite dyeing assistant, then adding the composite dyeing assistant into slurry, adding a water-based dye, and carrying out a papermaking process to obtain the composite dyeing assistant. According to the method, the color fastness of the woven body paper can be improved. The sun-proof grade of the high-color-fastness woven body paper is greater than or equal to 4 grades.

The utility model discloses a pulping device for production raw materials of packaging color boxes, which relates to the technical field of pulping of raw materials of color boxes and comprises a tank body, a support is fixedly connected to the lower portion of the outer surface of the tank body, and a supporting plate is fixedly connected to the inner surface of the support. A stirring device is jointly arranged on the top surface of the supporting plate and in the tank body and comprises a fixing box, a rotating shaft movably penetrates through the outer surface of the fixing box, a fixing plate is fixedly connected to the upper portion of the inner wall of the tank body, and the top end of the rotating shaft is rotationally connected with the middle of the bottom surface of the fixing plate; the lower portion of the outer surface of the rotating shaft is fixedly sleeved with a first bevel gear, the outer surface of the first bevel gear is connected with a second bevel gear in a meshed mode, and the outer surface of the rotating shaft is fixedly sleeved with blades. Raw materials can be stirred and beaten into paper pulp, and the beaten paper pulp can be poured out.

The invention discloses a manufacturing method of an environment-friendly paper product. The environment-friendly paper product is prepared from the following raw materials in parts by mass: 60-70 parts of a main fiber raw material, 25-35 parts of an auxiliary fiber raw material, 3-8 parts of an environment-friendly additive and 1-2 parts of a pretreating agent. By means of the components, by adding the auxiliary fiber raw materials, the environmental protection property is remarkably improved, waste cotton and linen and agricultural waste are converted into papermaking raw materials, consumption of primary fibers is reduced, meanwhile, waste recycling is achieved, and pollution caused by incineration and landfill is reduced. The auxiliary fibers and the main fibers have a synergistic effect and are matched with the environment-friendly auxiliaries to reinforce the quality of the paper, the cotton and linen fibers improve the flexibility, the agricultural waste fibers enhance the stiffness, lignin and short fibers are separated through low-temperature pyrolysis, impurities are prevented from affecting the performance of the paper, and solid powder rich in the lignin and the short fibers is recycled and reused.

The utility model relates to equipment for cotton pulp treatment. The equipment comprises a pulp distributing mechanism, a pulp distributing mechanism and a pulp distributing mechanism, the pulp separating mechanism is used for carrying out solid-liquid separation on the cotton pulp; the fine material mechanism is used for scattering or smashing the wet cotton material subjected to solid-liquid separation; a material transferring mechanism; and the conveying device is used for conveying the scattered or smashed wet cotton materials into the drying device for drying treatment. According to the scheme provided by the utility model, the cotton pulp can be adjusted according to the concentration of the conveyed cotton pulp, so that the concentration of the cotton pulp entering the pulp separating mechanism is kept consistent, the conveyed wet cotton is uniform, and the reliability and the stability of production are ensured.

The utility model relates to the technical field of papermaking equipment, in particular to a hydraulic pulper with coaxial different-speed impellers, which comprises a barrel-shaped tank body, a mounting part is hermetically arranged at the lower part of the tank body, and an external rotation mechanism for stirring pulp in the tank body is hermetically and rotatably arranged in the mounting part; an internal rotation mechanism for rotatably cutting pulp fibers is arranged in the external rotation mechanism in a sealed and rotating manner; the rotating speeds of the external rotating mechanism and the internal rotating mechanism are adjustable, and the rotating directions of the external rotating mechanism and the internal rotating mechanism are opposite. According to the hydraulic pulper with the coaxial different-speed impellers, the cutting and dispersing effects are improved by stirring pulp.

The invention relates to the technical field of corrugated medium paper production equipment, in particular to high-efficiency production equipment and process for high-strength corrugated medium paper, which comprises a beating tank, a stirring structure arranged on the inner wall of the beating tank and used for processing corrugated medium paper pulp with different fiber lengths, and a stirring mechanism arranged on the inner wall of the beating tank, the stirring structure comprises a rotary table rotationally mounted on the inner wall of the pulping tank and an extension strip used for smashing corrugated medium paper pulp fibers; the water injection structure is arranged at the upper end of the pulping tank and used for adding water into the pulping tank, and the water injection structure comprises a support fixedly installed at the upper end of the pulping tank and a spray head used for spraying water. According to the pulping machine, by arranging the stirring structure, when high-strength corrugated medium paper is produced, paper pulp with different fiber lengths can be processed as required by controlling the positions of the extension strips, so that the high-strength corrugated medium paper can be conveniently processed by using the paper pulp, and the processing efficiency and practicability of the pulping machine are improved.

The present application belongs to the technical field of pulping and papermaking, and provides a method for preparing a cotton-stalk biochemomechanical pulp. The present application provides a method for preparing a cotton-stalk biochemomechanical pulp, the method comprising the following steps: cutting cleaned and dried cotton stalks, and then sequentially performing pre-steaming and a screw extrusion fiberization treatment; immersing the defibrated cotton stalks into a buffer solution of cellulase to perform an enzymatic treatment for a set period of time, and then immersing same into a hot alkali solution; sequentially subjecting the cotton stalks, which have been subjected to a hot alkali impregnation treatment, to high-consistency pulp refining and a latency removal treatment, and then subjecting the resulting coarse pulp to a second-stage enzymatic treatment by using a compound enzyme of xylanase and pectinase; and subjecting the pulp, which has been subjected to the second-stage enzymatic treatment, to pulp screening and PFI beating, so as to obtain a cotton-stalk biochemomechanical pulp.

The invention discloses a preparation method of baking paper, and relates to the technical field of papermaking industry. According to the invention, the acidic bisulfite softwood pulp is used as a raw material, and the paper is endowed with an oil-proof characteristic through high-beating treatment, so that not only can potential harm to a human body caused by the use of an oil-proof agent in the baking paper be avoided, but also the problem of high energy consumption caused by high-beating-degree papermaking of the softwood pulp by a sulfate method in the prior art is solved.

The invention discloses a production method for reducing the proportion of long fibers of cream base paper, and belongs to the field of papermaking. The main technical scheme is as follows: raw materials comprise long fibers (one or more of cotton pulp, softwood pulp and bamboo pulp which are subjected to repulping and are ground by two serially connected disc mills until the beating degree is 25-35 degrees SR and the wet weight is 8.0-13.0 g), short fibers (hardwood pulp which is subjected to repulping and defibering and the beating degree is 15-20 degrees SR) and broken paper (subjected to repulping and defibering); adjusting the flow, mixing the three components according to the mass ratio of (8-20): (85-70): (15-0) in a pulp preparation pool, and uniformly grinding until the beating degree is 25-45 degrees SR; the white water reflux quantity is regulated and controlled in the process. And after the slurry is formed by a high-speed paper machine, wrinkling by using a ceramic or carbon steel scraper under the dryness of 55-85% at the wrinkling rate of 18-25%, and coiling and slitting to obtain the cream base paper. The quantification of the raw paper is 10-20g / m < 2 >, and the transverse dry tensile index is gt; 3.0 N.m / g, and the longitudinal wet tensile index gt; 3.0 N.m / g, and the softness lt; the bulk is gt; 6.60 m < 3 > / g, and the transverse liquid absorption height gt; and 75 mm / (100s). The process is optimized, the use amount of long fibers is remarkably reduced, meanwhile, it is ensured that the cream base paper has excellent strength and bearing performance, and the cost is remarkably reduced.

The invention discloses a preparation method of coated gift packaging paper. The preparation method comprises the following operation steps: S1, pulping: respectively pulping bleached sulfate softwood chemical pulp, bleached sulfate broadleaf wood chemical pulp and alkaline hydrogen peroxide bleached poplar chemimechanical pulp, and mixing to form mixed pulp; s2, auxiliary material adding, wet paper sheet forming and pre-drying; s3, coating and sizing are conducted, specifically, the front face and the back face of the paper sheet are coated with a coating respectively, and the coating comprises coating-grade light calcium carbonate, coating-grade talcum powder, a dispersing agent, sodium hydroxide, modified acrylic copolymer emulsion, polyvinyl acetate latex, coating starch, sodium carboxyl cellulose, a lubricating agent and a defoaming agent; s4, carrying out post-drying and carrying out super-soft calendering treatment by adopting eight rollers and seven pressing areas; the invention also provides the coated gift packaging paper prepared by adopting the preparation method, the smoothness of the coated gift packaging paper is greater than 1200s, the roughness of the coated gift packaging paper is less than 1.2 microns, and the coated gift packaging paper completely meets the requirements of the coated gift packaging paper for absorbing and drying gravure or flexographic printing water-based ink.

The application discloses a non-asbestos yarn and a manufacturing method and application thereof. The non-asbestos yarn is spun by using a papermaking method with mineral fibers and cotton pulp and / or waste paper pulp, the mineral fibers are any one or several of sepiolite, brucite and wollastonite, the amount of the mineral fibers is 70-100%, and the amount of the cotton pulp and / or waste paper pulp is 0-30%. The application further provides a manufacturing method of the non-asbestos yarn, the mineral fibers, the cotton pulp and the waste paper pulp are prepared through pulp preparation, papermaking, cutting, twisting and plying. The non-asbestos yarn is used for manufacturing friction materials and sealing materials. The non-asbestos yarn can replace the asbestos yarn, solves the harm caused by traditional asbestos, has simple manufacturing process, convenient operation, avoids environmental pollution, low cost, and is equivalent to the asbestos yarn in ignition loss and tensile strength at room temperature, and can completely replace the asbestos yarn and be used for manufacturing friction materials and sealing materials.

The invention discloses a high-strength paper packaging material and a preparation method thereof, and relates to the technical field of paper pulp molding.The preparation method comprises the following steps that waste paper is crushed and then mixed with bamboo fibers and nanocellulose for pulping, a chitosan solution, melamino-formaldehyde resin, gamma-aminopropyltriethoxysilane, alums and glycerinum are added to prepare forming slurry, and the forming slurry is prepared; performing vacuum adsorption to form a wet blank, preheating a hot press, putting the wet blank into a hot pressing mold, covering the wet blank with the polyvinyl alcohol-sodium alginate composite film, setting pressure and hot pressing time, and after hot pressing is finished, slowly relieving pressure to obtain a formed blank; and putting the formed blank into a blast oven, drying, taking out a dried sample, and standing at room temperature to balance moisture, so as to obtain the high-strength paper packaging material.

The invention discloses a method for preparing tobacco stem-pinus khasys mixed fluff pulp, which comprises the following steps of: performing two-stage hot water pretreatment on tobacco stems to dissolve out hot water soluble substances of the tobacco stems, pulping residues by adopting an oxygen-alkali method, and performing screening and ECF three-stage bleaching to obtain bleached tobacco stem pulp; the method comprises the following steps: pulping pinus khasys by using sulfate, screening, carrying out oxygen delignification and carrying out ECF three-section bleaching to obtain bleached pinus khasys pulp, enabling tobacco stems to have poor water absorption and good water-retaining property due to short fiber length, and preparing fluff pulp with good water absorption by matching long-fiber pinus khasys and short-fiber tobacco stems; the solid waste tobacco stems are subjected to resource utilization, and meanwhile a solution thought is provided for solving the problem that domestic fluff pulp long fiber forestry resources are not abundant.

The invention discloses pulping equipment for chemi-mechanical pulp and a pulping method thereof, and relates to the technical field of fiber product pulping, the pulping equipment comprises a shell, and a stepping motor is connected with one side of a pulping assembly through an output shaft; an automatic feeding mechanism is arranged on the inner side face of the conveying pipe. And one side of the telescopic rod is connected with an automatic discharging mechanism. According to the pulping equipment and the pulping method of the chemi-mechanical pulp, the stepping motor works to drive the output shaft to rotate, the output shaft drives the pulping assembly to rotate, the pulping assembly conducts pulping treatment on falling bamboo cellulose pulp, hot water is added while pulping is conducted, the temperature of the pulp is kept at 50 DEG C, the stepping motor is adjusted to 30000 revolutions for defibering treatment, and the pulping efficiency is improved. Slurry is discharged through the arranged automatic discharging mechanism, the discharged slurry is conveyed through the automatic feeding mechanism, bamboo pulp softening enzyme and pulping enzyme are added during conveying, after waiting for one hour, the bamboo pulp softening enzyme and the pulping enzyme are fully mixed under conveying of the spiral pushing rod, and the quality of the slurry is improved.

To provide a cellulose pulp excellent in both particle trapping property and binder property, and to provide a method for producing the cellulose pulp, since beaten fibers are used in a variety of fields due to their excellent ability to capture functional particles, but there are also applications that require not only particle trapping property but also binder property, pulp-like acrylonitrile fibers are known as beaten fibers that combine these properties, but in recent years the environmental impact of plastic waste has become an issue and there has been a demand for a shift to bio-based materials, while conventional bio-based materials containing cellulose have not necessarily been satisfactory in terms of combining the above-mentioned properties.SOLUTION: The cellulose pulp according to the present invention is characterized in that the cellulose pulp fibril area is 15% or more and the fibril area(%) / 100×fine(%) / 100 is 0.05 or more.SELECTED DRAWING: None

The present invention relates to a method for preparing water-repellent and breathable bamboo fiber paper, comprising the following steps: pulping a bleached bamboo pulp board to prepare a pulp with a beating degree of 45-65°SR, adding sodium carboxymethyl cellulose and polyamide polyamine epichlorohydrin resin, and then conveying the pulp to a net, pressing, drying, surface sizing, surface spraying, drying, and winding to obtain the water-repellent and breathable bamboo fiber paper. The surface sizing liquid is obtained by compounding a self-made cationic silicone, an alkyl ketene dimer, and water; and the surface is sprayed with self-made modified polyvinyl alcohol to provide the paper with water resistance. The prepared water-repellent and breathable bamboo fiber paper has a basis weight of 25-40g / m 2 , longitudinal tensile strength ≥3.5kN / m, wet tensile strength ≥0.50kN / m, water absorption ≤9.0g / m 2 , air permeability ≥1.0μm / Pa·s, whiteness ≥80%, softness ≤600mN, moisture 5.0%-7.5%, used for breathable base film for sanitary products, and is biodegradable.

The utility model provides pulping optimization equipment for papermaking, and belongs to the technical field of papermaking. The pulping cylinder can be used for polishing the papermaking materials; the stirring barrel is fixedly connected to the circumferential surface of the pulping barrel and can be used for stirring the papermaking materials; the block removing mechanism comprises a first motor which is fixedly connected to the upper end of the stirring barrel and can be used for driving a stirring wheel to rotate; the two stirring wheels are fixedly connected to the output end of the first motor through rotating rods and can be used for uniformly stirring the papermaking materials; the mounting frame is fixedly connected to the upper end of the pulping cylinder, and the second motor can be mounted on the pulping cylinder; and the second motor is fixedly connected to the circumferential inner wall of the mounting frame and can be used for driving the first gear to rotate, after the papermaking materials are stirred, the effect of pulping the papermaking materials can be achieved, then the blocked papermaking materials are ground through a brush disc and a filter plate, and the situation that the subsequent processing effect is affected by the blocked papermaking materials after pulping can be reduced.

The application provides a preparation method of lyocell fibrillated fiber, and specifically comprises the following steps: S1, adding lyocell cut fibers into water to control the concentration to be 2-4%, and dispersing the lyocell cut fibers by using a pulper; S2, filtering water from the dispersed pulp by using a filter press to obtain 10-30% high-concentration pulp, and conveying the high-concentration pulp to a group of high-concentration pulping machines by using a screw feeder to perform pulping, so as to obtain pulp 1 with a beating degree of 40-50°SR; S3, diluting the pulp 1 to a concentration of 1-3% by adding water, and performing beating and defibration by using a high-frequency defibrator, and repeatedly performing beating and defibration by using the high-speed hydraulic shearing effect of the high-frequency defibrator, so as to obtain lyocell fibrillated fiber with a beating degree of 75-95°SR. The lyocell fibrillated fiber can obtain a larger length and a lower fine fiber component by fully utilizing the friction force between fibers and the hydraulic shearing effect, a large number of fibrils can be obtained, and the lyocell fiber can be fully fibrillated.

The invention relates to the field of papermaking, and particularly provides a compound pulping method for a low-expansion-and-contraction-rate decorative paper-based material. Comprising the following steps: S100, adding a compound enzyme solution into primary pulp, and carrying out an enzymolysis reaction to obtain enzymolysis pulp; s200, performing mechanical pulping on the enzymolysis slurry to obtain slurry; s300, compounding the slurry with polyamide-epichlorohydrin resin, polyacrylamide, nano silicon dioxide, titanium dioxide and nano cellulose, and performing post-treatment to obtain a low-expansion-and-contraction-rate decorative paper base; through the synergistic effect of four enzymes, the fiber separation efficiency is improved, the fiber surface is microcosmically modified, the specific surface area is increased, more hydroxyls are exposed, and hydrogen bond bonding in the papermaking process is enhanced; the polyamide-epichlorohydrin resin and polyacrylamide are crosslinked in a fiber network, so that the dry and wet strength of the paper base is improved, and the wet size deformation is reduced; the nano silicon dioxide and the nano cellulose fill up micro gaps, optimize a pore structure and inhibit moisture absorption stress, so that low expansion and contraction rate and high stability of the decorative paper are realized.

The utility model belongs to the technical field of papermaking, and particularly relates to efficient pulping equipment for papermaking. The pulping device comprises a pulping tank, one side of the top of the pulping tank is fixedly communicated with a feeding pipe, and the center of the bottom of the pulping tank is fixedly communicated with a discharging pipe; the defoaming assembly comprises a motor fixedly connected to the center of the top of the pulping tank, a shaft rod coaxially and fixedly connected with the tail end of a motor rotor and rotationally connected to the interior of the pulping tank, a sleeve movably connected to the shaft rod in a sleeving mode, a tension spring arranged on the shaft rod and used for jacking up the sleeve downwards, and a connecting frame fixedly connected to the sleeve; the rolling ball is arranged at the end of the connecting frame, the guide rail is fixedly connected to an inner cavity of the pulping tank and used for installing the rolling ball, and the spine assembly is fixedly connected to the bottom of the connecting frame. A plurality of protrusions are arranged on the bottom face of the inner side of the guide rail and used for repeatedly jacking up the rolling ball. The device disclosed by the utility model adopts a structure capable of eliminating bubbles generated in the paper pulp stirring process, so that the papermaking quality is improved.

The invention belongs to the technical field of composite material preparation, and discloses a method for preparing a high-performance waste paper composite material and application of the high-performance waste paper composite material, and the method comprises the following steps: crushing a waste corrugated carton, pulping, making paper into quantitative waste paper of 100-200g / m < 2 >, dipping the waste paper in an ethanol solution of esterified modified lignin, and then carrying out low-temperature hot pressing treatment to prepare the composite material. According to the invention, the reinforcing process of the waste paperboard is optimized, and the lignin forms a compact cross-linked network among fibers by adopting a modified lignin impregnation and hot pressing combined technology, so that the problem of poor performances of the waste paperboard during secondary recycling is solved. The esterified modified lignin has good dispersity and permeability in an ethanol solution, and can be uniformly distributed in a waste paper fiber network; and after the composite material is hot-pressed for 20-30 minutes under the pressure of 10MPa, the tensile strength and burst index of the composite material are improved.

The application discloses a paper with high coffee residue content and a preparation method and application thereof. The paper can be paper or paperboard, and contains pulp fibers and coffee residue. The beating degree of the pulp fibers is 45-95SR, and the water retention value is 1.4-2.2. The particle size of the coffee residue is 30-500 mesh. The mass percentage of the coffee residue in the paper or paperboard is 40%-90%. The paper can be prepared through the steps of fiber pulp, coffee residue grinding, mixing and molding. The paper can be used for preparing a coffee bag, and the paperboard can be used for preparing a cup sleeve of a coffee cup.

The invention discloses a high-strength environment-friendly craft paper production process with low bleached hardwood pulp consumption, and relates to the technical field of papermaking, and the high-strength environment-friendly craft paper production process comprises the following steps: adopting 20-30% by mass of natural-color sulfate-process softwood pulp and 70-80% by mass of recycled paper pulp; pulping the natural-color sulfate-process softwood pulp by using three conical pulping machines which are connected in series; grading and screening the recycled paper pulp into long, medium and short fibers for later use; carrying out heat dispersion treatment on the recycled paper pulp subjected to the grading treatment by utilizing a heat dispersion machine; adding a mucilage control enzyme into the recycled paper pulp subjected to heat dispersion treatment; blending slurry; surfing the Internet; squeezing the paper; sizing on the surface; and hard calendaring. According to the method, the high-strength environment-friendly craft paper with the burst index of 2.8 kPa.m < 2 > / g can be produced on the premise that the pulp consumption of the natural color needle leaf pulp is low; the prepared high-strength environment-friendly craft paper has the advantages of low cost and low market demand.

Provided are: a cellulose pulp having excellent particle trapping properties and adhesion; and a method for producing the cellulose pulp. The pulped fiber is applied to various fields due to excellent capturing properties of functional particles, but has applications that require not only particle capturing properties but also cohesiveness. Pulp-like acrylonitrile-based fibers are known as pulped fibers that give consideration to these characteristics, but in recent years, the influence of plastic waste on the environment becomes a problem, and conversion into a bio-based raw material is required. On the other hand, a conventional cellulose-containing bio-based raw material is not necessarily a satisfactory raw material in consideration of the above-mentioned characteristics. The purpose of the present invention is to provide: a cellulose pulp having excellent particle trapping properties and caking properties; and a method for producing the cellulose pulp. The cellulose pulp is characterized in that the fibril area is 15% or more, and the fibril area (%) / 100 * fine fiber (%) / 100 is 0.05 or more.