1400 results about "Sizing" patented technology

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%.

The invention provides a secondary sizing agent as well as a preparation method and application thereof. The secondary sizing agent comprises the following components: a main film-forming agent, an auxiliary film-forming agent, a lubricant, a silane coupling agent and water, wherein the main film-forming agent is an aqueous epoxy solution, the auxiliary film-forming agent comprises a low molecular weight epoxy emulsion and an aqueous polyurethane emulsion, and the lubricant comprises an organosilicon lubricant and an ionic lubricant. In the scheme, the secondary sizing agent formed by mixing the main film-forming agent, the auxiliary film-forming agent, the lubricant and the silane coupling agent with proper types and proper contents can endow the silicon carbide fiber with excellent wear resistance, folding resistance and mechanical properties. Compared with one-time sizing, the number of times of wear resistance of the fiber yarn is increased by more than 10 times, the yarn breaking rate in the fabric processing process is greatly reduced from 10% to 0.5%, the surface smoothness of the prepared fiber fabric is greatly improved, the performance of the composite material prepared through the impregnation method is integrally improved, the bending strength is obviously improved, and the performance requirement of the three-dimensional fabric can be completely met.

The invention discloses a rubber sealing element hot joining vulcanization mold, and belongs to the field of hot joining vulcanization molds, the rubber sealing element hot joining vulcanization mold comprises a base, a lower mold is fixedly mounted on the base, a material conveying assembly is arranged on the lower mold, an exhaust assembly is arranged on the base, a cleaning assembly is arranged on the lower mold, and a lifting assembly is arranged on the base. A fixing disc is installed on the base through the lifting assembly, an upper mold is fixedly installed at the lower end of the fixing disc, the exhaust assembly comprises a collecting box fixedly installed on the lower mold, and supports which are annularly and evenly distributed are fixedly installed on the base. According to the device, the exhaust holes can be cleaned in the processes of heating the sizing material and applying pressure to the sizing material, so that the smoothness of gas exhaust of the exhaust holes can be effectively ensured, meanwhile, through cooperation of the knocking mechanism and the exhaust component, exhaust of bubbles and gas in the sizing material can be accelerated, and the service life of the sizing material is prolonged. And the overall strength and quality of the rubber sealing element which is finally vulcanized can be improved.

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 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 film transfer and immersion type dual-purpose sizing machine, and relates to the technical field of sizing machines, the film transfer and immersion type dual-purpose sizing machine comprises a sizing machine shell, an upper sizing roller is arranged at the upper end of the interior of the sizing machine shell, a lower sizing roller is arranged at the lower end of the interior of the sizing machine shell, and sizing beams are arranged at the front end and the rear end of the interior of the sizing machine shell; and a filtering mechanism for treating glue is arranged in the collecting box. According to the membrane transfer and soaking type dual-purpose sizing machine, scraped glue is discharged through a discharging pipe and collected through a collecting box, after glue collection, the glue is filtered through a filter screen and collected to the lower end of the interior of the collecting box, and after the glue is adsorbed through the capillary action of paper, dust on the surface of the paper can be left in the glue; and the glue is filtered through the filter screen, so that the quality of the glue during recycling is guaranteed, and the overall stability during use is improved.

The invention relates to the technical field of composite materials, in particular to a carbon fiber composite material with both interface performance and damping performance and a preparation method of the carbon fiber composite material. The invention relates to a carbon fiber composite material with interfacial properties and damping properties. The carbon fiber composite material is prepared from the following components in percentage by weight: 65-75% of carbon fibers, 25-35% of a modified butyl rubber resin matrix, 0.5-2% of a butyl rubber film, 0.5-1% of a polyurethane-based sizing agent and 0.1-0.5% of a silane coupling agent, the in-situ growth CNTs technology is adopted, the shearing strength of a fiber-resin interface can be remarkably improved, meanwhile, the butyl rubber film is embedded into every two layers of carbon fiber prepreg of a sandwich structure, directional energy dissipation is achieved through controllable shearing deformation, excellent environmental stability is achieved, the damping performance and interface performance loss after damp-heat aging is lower than 15%, and the damping performance and the interface performance loss after damp-heat aging are lower than 15%. The industrial problem that a traditional carbon fiber composite material is strong but not tough and rigid but not soft is successfully solved, and the carbon fiber composite material is particularly suitable for application requirements of high-end competitive sports equipment.

The invention discloses a production process of high-folding-resistance corrugated base paper, and particularly relates to the technical field of corrugated paper production. The process comprises the following steps: mixing and hydraulically pulping different types of waste paper raw materials to obtain original waste paper pulp with the concentration of 2.5-2.8%; original waste paper pulp enters a classifying screen after being subjected to high-concentration sand removal, coarse screening and low-concentration sand removal, and fibers in the waste paper pulp are screened into long fibers and short fibers; mixing the long fiber pulp and the short fiber pulp in proportion, and carrying out papermaking and surface sizing treatment; wherein the papermaking comprises the steps of forming a net part, squeezing and dehydrating, and drying in a pre-drying part to obtain initial corrugating base paper with the dryness of 90-92%, then carrying out surface sizing treatment on the initial corrugating base paper by using a boiled glue solution, drying at 60-100 DEG C until the dryness is 85-92%, and curling and slitting to obtain the high-folding-resistance corrugating base paper. Stable production of the high-folding-resistance corrugated base paper is achieved through raw material diversification, fiber refining treatment, papermaking process flexible regulation and control and glue solution accurate preparation.

The invention belongs to the technical field of textile materials, and relates to a high-performance antibacterial flame-retardant environment-friendly textile sizing agent and a preparation method thereof. The textile size composition is prepared from the following raw materials in parts by weight: 50-80 parts of composite modified starch, 5-10 parts of (methyl) acrylic acid (methyl / butyl) ester, 5-7 parts of waterborne polyurethane, 12-20 parts of xanthan gum, 3-9 parts of a composite antibacterial agent, 10-18 parts of a composite flame retardant, 1-3 parts of sodium citrate, 2-3 parts of a smoothing agent and 40-80 parts of deionized water. The concentration of the slurry composition is controlled between 10 g / L and 35 g / L by deionized water, and the pH value is adjusted between 6 and 8. The textile sizing agent does not contain a PVA component, has the characteristics of bacteriostasis, flame retardance, environment friendliness, wear resistance, excellent sizing performance and the like, can replace the traditional PVA sizing agent, and is multifunctional, high-performance, bacteriostatic, flame-retardant and environment-friendly textile sizing agent.

The invention provides a control method and device of sizing material production equipment, electronic equipment, a medium and a product. The method comprises the steps that first index data of mixed powder in a powder mixing device and second index data of a liquid material in a liquid material mixing device are obtained; the first index data comprises particle size, water content, fluidity parameter, apparent density and first temperature; the second index data comprises the first density and / or the first viscosity; under the condition that the first index data and the second index data meet a first preset condition, the mixed powder and the liquid material are sequentially conveyed to a rubber mixing reaction device at a first conveying rate and a second conveying rate; detecting third index data of the sizing material in the sizing material mixing reaction device at a preset moment; the third index data comprises second density, second viscosity, mass and solid content; under the condition that the third index data meets the second preset condition, production of the target rubber material is achieved. According to the method, the production efficiency is improved, and the product quality is stabilized.

An extrusion die capable of controlling existence of sizing materials belongs to the technical field of plastic forming and comprises a clamping mechanism, a fixing mechanism, a switching mechanism and a waste discharging mechanism. The switching mechanism comprises a mold mounting frame, a single mold, a feeding pipe, a Y-shaped plate, a pressing plate, a sleeve and a push rod; the sleeve is mounted at a preset mounting position of the Y-shaped plate in a welding manner; one end of the push rod is fixedly mounted at a preset mounting position of the Y-shaped plate through a fastener; the other end of the push rod is fastened and mounted at a specified mounting position of the feeding pipe through a bolt; the pressing plate is fixedly connected with the sleeve in a welding manner; an electric push rod I pulls a feeding pipe to enable a material opening formed in the outer wall of the feeding pipe to be separated from a feeding channel, an electric push rod II pushes a clamping rod to be separated from a clamping groove, and a mold mounting frame rotates around a triangular block, so that another single mold is rotated to a designated position, the mold can be descended to be replaced in a non-stop state, non-stop mold replacement is achieved, and the mold replacement efficiency is improved. And products can be produced without shutdown.

The invention belongs to the technical field of pipe manufacturing, and particularly relates to a manufacturing method of a surface-traceless water supply steel wire mesh reinforced polyethylene composite pipeline, which comprises the following steps: core layer extrusion molding, core layer vacuum cooling shaping, steel wire winding, outer layer PE raw material covering, internal pressure sizing and gradient cooling, code spraying, cutting and sealing. The gradient cooling is divided into three stages of cooling, the first stage is pre-cooling shaping and warm water spraying pre-cooling, shock cooling hardening of the surface of a melt is avoided, meanwhile, internal pressure sizing is conducted on the pipe, the pipe wall is made to be tightly attached to a sizing sleeve through internal air pressure, and concave-convex marks of the steel wire mesh composite pipe are eliminated; gradient cooling is adopted in the second stage, multi-stage water tank segmented cooling is adopted, and the temperature of each stage of water tank is adjusted; and the third stage is post-cooling treatment, low-temperature aerial fog cooling is adopted to further eliminate internal thermal stress, and the temperatures of the first stage, the second stage and the third stage are gradually reduced. The melt flow stress can be eliminated, the crystallization rate is controlled, the internal thermal stress is eliminated, and the pipe quality is ensured.

The invention discloses a large-diameter thin-wall seamless steel pipe and a preparation method and application thereof, and belongs to the technical field of seamless steel pipes. The method comprises the steps that S1, all metallurgical raw materials are mixed and smelted, and a pipe blank is obtained; s2, the pipe blank is sequentially subjected to first heating, perforating, rolling and first certain diameter reducing, and a hot-rolled steel pipe is obtained; the hot-rolled steel pipe is subjected to hot expansion to obtain a hot-expanded steel pipe, and the hot-expanded outer diameter is 350-450 mm; s3, sequentially carrying out second heating and second sizing and reducing on the hot-expanded steel pipe: firstly feeding the steel pipe into a second elliptical hole type sizing rack for sizing and reducing, and then feeding the steel pipe into a second circular hole type sizing rack for sizing and reducing; the outer diameter of the seamless steel pipe is the same as the outer diameter of the thermal expansion and is 350-450 mm, and the wall thickness is 5-20 mm; and sequentially carrying out water quenching and tempering on the seamless steel tube to obtain the large-caliber thin-wall seamless steel tube. The large-diameter thin-wall high-strength seamless steel pipe is uniform in microstructure, smooth in surface, free of concave collapse and excellent in obdurability.

The utility model discloses a gluing device for processing a multilayer solid wood composite floor. The gluing device comprises a mounting frame, a glue outlet pipe, a glue box, a driving motor, a gluing roller, two guide columns, a sliding block, a glue distributing plate, a spring, four limiting rods, a lifting seat and a conveyor, according to the gluing device for processing the solid wood composite floor, the lifting seat and the glue distributing plate are pushed by the spring to be attached to the glue applying roller, and the glue distributing plate can scrape glue on the surface of the glue applying roller, so that the glue is uniformly distributed on the surface of the glue applying roller, and uniform gluing on a veneer is realized; the conveyor drives the veneer to move, the driving motor drives the glue applying roller to rotate, and the glue applying roller slides in the sliding groove through the sliding block, so that under the action of gravity, the glue applying roller is attached to the veneer and applies pressure to the veneer, and glue on the surface of the veneer can be evenly distributed; and the firmness of bonding between adjacent layers of thin wood plates during floor processing is ensured.

The invention relates to a rubber extrusion formula technology, and discloses a rubber extrusion intelligent formula method and system, and the method comprises the steps: an intelligent control management end carries out the clustering of recent production data through employing a mean-shift clustering algorithm, and calculates the recent optimal formula information of each specification; the intelligent control management end uses historical production data to regress influence factors of different sizing materials and different production line states on a formula through a random forest algorithm; during production, the intelligent control management end obtains specification clustering from the data platform through PLC switching rubber specifications, obtains optimal formula information and automatically issues the optimal formula information to a machine; after production for a period of time, the intelligent terminal obtains sizing material and production line information, transmits the sizing material and production line information to the random forest model, obtains standard correction and issues the standard correction to the machine. The rubber extrusion formula disclosed by the invention is high in efficiency and good in stability and robustness.

The utility model relates to the technical field of machining, and discloses an efficient saw cutting, threading and polishing production line which comprises a material bearing frame used for bearing raw materials; the automatic feeding mechanism is arranged on the material bearing frame, and the automatic feeding mechanism is used for automatic feeding; the sizing mechanism is arranged beside the automatic feeding mechanism, and the sizing mechanism is used for automatic sizing; the conveying mechanism is arranged beside the automatic feeding mechanism, and the conveying mechanism is used for conveying raw materials; the fixed saw cutting, threading and polishing mechanism is arranged on the sizing mechanism, and the fixed saw cutting, threading and polishing mechanism is used for fixed saw cutting, threading and polishing procedures; and moving the sawing, threading and polishing mechanism. According to the double-end sawing machine, automatic feeding can be achieved, automatic sizing can be completed, and double-end sawing, threading, polishing, automatic lifting feeding and automatic discharging can also be achieved.

The invention relates to a heat-conducting and wave-absorbing gasket and a preparation method and application thereof, and belongs to the technical field of heat-conducting and wave-absorbing composite materials. The preparation method of the heat-conducting wave-absorbing gasket comprises the following steps: performing vacuum heating, stirring and mixing on vinyl silicone oil and methyl vinyl raw rubber to obtain an organic silicon resin matrix, dividing the organic silicon resin matrix into two parts, adding a curing agent into one part to obtain a component A sizing material, and adding an inhibitor and a catalyst into the other part to obtain a component B sizing material; carrying out coating modification treatment on the heat-conducting filler and the wave-absorbing filler by adopting a silane coupling agent to obtain a mixed modified filler; and mixing the component A sizing material, the component B sizing material and the mixed modified filler, performing compression molding, and performing heating curing to obtain the heat-conducting wave-absorbing gasket. The heat-conducting and wave-absorbing gasket has the characteristics of high resilience, low volatility and low oil diffusion while having the characteristics of high heat conductivity and wave absorption, can be effectively applied to electronic components, and is particularly suitable for being applied to airtight security and optical module components.

The invention discloses a high-toughness PPR pipe machining device which comprises an extrusion system, a pulsation mixing system, a melt online monitoring device, a sizing cooling system, a traction device and a winding device. The extrusion system is used for melting and conveying raw materials, and the pulsation mixing system is used for deeply mixing a melt by utilizing a periodic disturbance structure, so that a toughening agent and a copolymerization component are more uniformly dispersed in the melt. The melt on-line monitoring device can detect the temperature, pressure and dispersity of the melt in real time, so that the extrusion process is monitorable. The sizing cooling system adopts a subsection cooling mode of rapid cooling, constant-temperature slow release and low-temperature shaping, and stable shape control is achieved through vacuum sizing. The traction device and the winding device are used for keeping the production rhythm stable and achieving continuous winding of the formed pipe. According to the invention, the melt mixing quality can be improved, the cooling internal stress is reduced, and the toughness and dimensional stability of the PPR pipe are improved.

The invention relates to a paper filter material as well as a preparation method and application thereof. The preparation method of the paper filter material comprises the following steps: S1, preparing flash drying pulp, mercerizing pulp, paper pulp dried in a drying cylinder and water into pulp; s2, carrying out in-pulp sizing on the pulp obtained in the step S1, and then forming, dehydrating and drying to obtain raw paper; and S3, carrying out surface sizing on the raw paper in the step S2 by adopting starch, and drying to obtain the paper filter material. The paper filter material obtained through the preparation method keeps good air permeability and has high bulk, a paper filter tip rod made of the paper filter material serving as a filter element has low suction resistance and good suction resistance stability, an existing cellulose acetate fiber filter tip rod can be replaced, and production cost, environmental protection and suction experience are all considered.

The invention belongs to the technical field of adhesive tape production equipment, and discloses a vertical adhesive tape production compound machine which comprises a raw material supply area box body, a coating compound area, a cooling sizing area and a slitting winding area, the raw material supply area box body is arranged at the bottom of the coating compound area, the coating compound area is arranged at the bottom of the cooling sizing area, and the slitting winding area is arranged at the bottom of the cooling sizing area. The cooling and shaping area is arranged at the bottom of the slitting and rolling area; the cooling and shaping area comprises a vertically-arranged box body, a cooling box is fixedly installed on the inner wall of the top of the box body, an adjusting mechanism is arranged in the cooling box, and the adjusting mechanism adjusts the opening size of a ventilation notch in the cooling box through expansion of an air bag so as to achieve dynamic cooling control; the vertical adhesive tape production compound equipment solves the problems of non-uniform cooling, complicated operation, poor adaptability and the like in the prior art, and is efficient, accurate and intelligent.

The invention discloses digital heat transfer paper with low rejection rate and a preparation method thereof. The digital heat transfer paper is prepared by the following steps: firstly, preparing a surface coating glue solution, then carrying out pulping, pulping and proportioning on the pulp, and carrying out a plurality of processes of forming on a net, carrying out surface sizing and coating, thereby finally obtaining the digital heat transfer paper. The sizing agent is modified by using the grafting agent to obtain the modified sizing agent, and then the modified sizing agent is applied to the digital heat transfer paper, so that compared with the prior art, the digital heat transfer paper prepared by the invention has the advantages of good glossiness, relatively good hydrophobicity and the like.

The utility model discloses filtering equipment for producing a self-sealing adhesive material, which comprises a conveying mechanism, a filtering mechanism, a discharging mechanism and a sealing mechanism, the conveying mechanism is provided with a cavity, the cavity is provided with an inlet and an outlet, and the inlet and the outlet are respectively communicated with a feeding pipe and a discharging pipe; the filtering mechanism comprises a cylindrical part, the cylindrical part penetrates through the cavity and axially moves in the cavity, and the cylindrical part is provided with two filtering channels capable of working alternately; and the filtering channel positioned in the cavity is concentric with the inlet and the outlet of the cavity, so that the feeding pipe, the cavity, the filtering channel positioned in the cavity and the discharging pipe form a closed conveying pipeline. According to the utility model, the filtering mechanism is additionally arranged in the conveying mechanism, so that the sizing material with the granularity sectional area larger than 1mm < 2 > is filtered, and meanwhile, the two filtering channels capable of working alternately are arranged, so that the filter screen can be replaced without shutdown, and the continuous production of the equipment is ensured.

The invention belongs to the technical field of high polymer material composite tarpaulin, and particularly relates to tear-resistant PVC (polyvinyl chloride) composite vehicle tarpaulin, equipment, a preparation method and application. The tarpaulin for the vehicle is composed of base cloth and PVC films attached to the two sides of the base cloth through PVC slurry. Wherein the PVC slurry comprises the following materials: 100 parts of PVC paste resin, 90-120 parts of a plasticizer, 4-8 parts of an adhesive, 11-12 parts of a viscosity reducer and 25-35 parts of PVC calcium powder; the thickness of the PVC slurry permeating into the base cloth is less than or equal to 1 / 3 of the thickness of the base cloth. Vehicle tarpaulin manufacturing equipment is improved, the bottom film pressing wheel and the surface film pressing wheel are additionally arranged to improve attachment of a PVC film and a large cylinder, an original padding process is changed into a transfer sizing method by means of the modified transfer sizing wheel set, the sizing gram weight and screen cloth permeation can be reduced, and the production efficiency is improved. The tarpaulin tearing performance is improved; and the tarpaulin has good stripping resistance and the like.

The invention provides a raw material composition of an enhanced surface sizing agent for corrugated paper. The raw material composition comprises the following components in parts by weight: 2-10 parts of starch, 0.01-4 parts of amylase, 0.01-3 parts of carboxymethylcellulose and 5-30 parts of sodium sulfate. The invention also provides a preparation method of the enhanced surface sizing agent for corrugated paper, which adopts the raw material composition and specifically comprises the following steps: adding starch into a reactor, heating to a reaction temperature, and adding amylase for gelatinization reaction; after gelatinization is finished, reducing the temperature to room temperature, adding carboxymethyl cellulose, and stirring to fully mix the carboxymethyl cellulose and the carboxymethyl cellulose; adding sodium sulfate into the reactor, and fully stirring and reacting to obtain the enhanced surface sizing agent for the corrugated paper. The surface sizing agent is prepared by gelatinizing and modifying starch and adding carboxymethyl cellulose and sodium sulfate, and the surface strength of paper can be remarkably improved when the product is applied to corrugated paper. The preparation method is simple and obvious in effect.

The invention provides a large-tow carbon fiber surface modification method, device, equipment, medium and product, and the method comprises the following steps: establishing a graphene oxide-sizing agent-modifier-matrix resin microscopic model, and determining a target modifier with better interface performance under the microscopic scale; obtaining a mechanical property test result of the composite material sample modified by the target modifier under a macroscale; establishing a composite material mesoscopic model, applying mechanical property test conditions, and adjusting interface unit material parameters until the interface unit material parameters correspond to the interface properties under the microscale, so as to obtain a mechanical property simulation result under the microscale; and comparing a mechanical property test result under the macro scale with a mechanical property simulation result under the micro scale, and verifying the accuracy of regulating and controlling the modified interface performance of the large-tow carbon fiber composite material by the micro-scale simulation. The large-tow carbon fiber surface modification research method based on microcosmic-microcosmic-macroscopic multi-scale simulation is achieved, logic is clear, the steps are simple, and operation is easy.

The utility model discloses a gluing device for inductance coil processing, and relates to the technical field of inductance coil processing. The top of the base is provided with a supporting plate, one side of the supporting plate is provided with a glue storage box and a motor, the output end of the motor is connected with a driving shaft, when the glue spraying device is used, the motor rotates to drive the driving shaft to rotate, so that a driving gear and a fixed head rotate, and the driving gear rotates to drive a driven gear to rotate; when the piston plate moves downwards, a liquid pumping pipe can pump a sizing material into the piston box, when the piston plate moves upwards, the sizing material can be sprayed out through a liquid conveying pipe and a glue spraying head, meanwhile, a fixing head rotates to enable an inductance coil to rotate, and therefore the sizing material can be sprayed out through the liquid pumping pipe and the glue spraying head; furthermore, alternating current can be uniformly sprayed on the inductance coil, the rotation of the inductor and the spraying of glue can be combined into a whole, the energy consumption is reduced, and the manufacturing cost of equipment is reduced.

The invention discloses a low-creep cap ply material prepared from recycled polyester and a preparation method of the low-creep cap ply material. The preparation method comprises the following steps: S1, a melt spinning process: carrying out melt extrusion, spinning, cooling, traction, sizing and rolling on a recycled polyester raw material; the regenerated polyester raw material is a polyester raw material with p-Tol content of less than 120ppm; s2, a yarn twisting procedure, wherein the obtained wound silk is twisted, and the designed twist degree is not larger than 46 * 46 T / 100 mm; and S3, a gum dipping process. Compared with a nylon cap ply material, the low-creep cap ply material prepared from the recycled polyester has excellent creep property and good dimensional stability, the cost can be saved by 4%, and the low-creep cap ply material is an ideal material for replacing a nylon cap ply.

The invention discloses a preparation technology of collection paper literature deacidification test paper, and belongs to the technical field of papermaking engineering. The method comprises the following steps: firstly, determining physicochemical indexes of the deacidification test paper according to ontology characteristics of precious ancient books and recent modern paper literatures, then taking saponified rosin size as an internal sizing agent, taking talcum powder as a filler, taking cationic polyacrylamide (CPAM) as a retention aid, and finally, carrying out papermaking and drying to obtain the deacidification test paper. The performance of the product prepared by the process is basically consistent with that of recent modern literature paper, the product has the capability of replacing a paper literature body to carry out lossy testing, and a more reliable, more comprehensive and more economical basis can be provided for constructing a deacidification effect evaluation system.

The invention discloses an acid-neutral nano PHA paperboard reinforcing agent as well as preparation and application thereof, and belongs to the technical field of papermaking chemicals. The reinforcing agent is a bio-based nano water-based emulsion, and the core of the reinforcing agent is that a stable high-positive-charge nanoparticle interface is constructed under an acid-neutral window through the synergistic effect of polyphenol and an amine polymer. The environment-friendly wet strength agent solves the potential safety hazard of the traditional wet strength agent, and does not contain free formaldehyde and epichlorohydrin. The method has the outstanding advantages that the method is completely compatible with a modern papermaking acid-neutral process, and the defect that the similar bio-based technology needs to react under alkalinity is overcome; the adhesive is flexible to apply, can be efficiently used for wet end addition, or can be stably compounded with oxidized starch for surface sizing; the preparation method is simple, efficient and energy-saving, can realize excellent wet strength retention rate and dry strength improvement under the conditions of low addition amount and conventional industrial drying at 105 DEG C, and does not need extra high-temperature curing.

The invention discloses a method for solving linting and dusting during paperboard printing, and belongs to the technical field of papermaking. Comprising the following detailed steps: a slurry preparation process, surface sizing treatment and a drying and curing process, in the slurry preparation process, various high-quality fiber raw materials are carefully selected and mixed, the proportion of various fibers is accurately controlled according to the expected performance and quality requirements of the paperboard, and meanwhile, a proper amount of auxiliaries are added; and the binding force between the fibers and the strength of the paper are enhanced. The raw material ratio in the paperboard production process is precisely regulated and controlled, the specially-made composite surface sizing agent is adopted for surface treatment, and scientific and reasonable drying and curing processes are matched, so that the problems of linting and powdering of the paperboard in the printing process are effectively solved, and the printing quality and the production efficiency of the paperboard are improved.