1041results about "Paper-making machines" patented technology

The invention relates to the technical field of intelligent manufacturing, discloses a papermaking equipment fault tracing method and system based on a process knowledge graph, and discloses the papermaking equipment fault tracing method and system based on the process knowledge graph. The method and the system comprise data acquisition and preprocessing, papermaking process knowledge graph construction, fault event detection and matching, fault tracing and propagation path reasoning, and maintenance scheme recommendation and optimization. The method overcomes the limitation that the traditional method is difficult to capture the cross-equipment, cross-process and cross-time sequence deep causal association and fault propagation path of the papermaking equipment. By constructing a comprehensive papermaking process knowledge graph, equipment operation state data, process parameter data, production quality data, equipment structure principle, process flow knowledge, fault mode knowledge, maintenance experience and other heterogeneous knowledge are subjected to deep fusion and semantic association, so that the system can exceed the correlation of the data surface; and an internal mechanism and a propagation chain of the fault are deeply excavated.

Web material structuring belts that impart structure to a web material during a web material structuring operation and / or structured web material forming operation, method for making same and methods for using same to make structured web materials, for example structured fibrous structures, such as structured sanitary tissue products such as structured toilet tissue, structured paper towels and structured facial tissue are provided.

Web material structuring belts that impart structure to a web material during a web material structuring operation and / or structured web material forming operation, method for making same and methods for using same to make structured web materials, for example structured fibrous structures, such as structured sanitary tissue products such as structured toilet tissue, structured paper towels and structured facial tissue are provided.

The invention relates to the field of intelligent manufacturing, in particular to a papermaking process intelligent parameter adjustment method and system oriented to energy consumption optimization, and the method comprises the following steps: S1, obtaining a historical production and energy consumption report, a product quality standard, a productivity plan, an equipment capability curve and safety red line, and an energy price and carbon emission coefficient, and defining a multi-objective optimization function and constraint; s2, acquiring production process data, and preprocessing the data to obtain time sequence sample data; s3, performing feature construction based on the time sequence sample data to obtain a feature set, and constructing a process-energy consumption directed acyclic graph by adopting NOTEARS to obtain a causal atlas; s4, constructing a short-term energy consumption prediction model and a quality prediction model, and performing short-term energy consumption prediction and quality prediction based on the feature set, the causal atlas, the target KPI and the constraint; and S5, performing multi-objective strategy optimization according to the objective function and constraint, short-term energy consumption prediction and quality prediction results. On the premise of ensuring the product quality and the production safety, the energy consumption of a unit product can be effectively reduced.

The invention provides a core material for a vacuum insulation panel, the vacuum insulation panel and a preparation method and application of the vacuum insulation panel. The core material for the vacuum insulation panel comprises aramid fibers and a binding material, and the aramid fibers comprise at least one of poly (m-phenylene isophthalamide) fibers, poly (p-phenylene terephthalamide) fibers and heterocyclic aramid fibers; the length of the aramid fiber ranges from 1 mm to 10 mm. The vacuum insulation panel comprises a core material for the vacuum insulation panel and a barrier film material, and the barrier film material wraps the core material for the vacuum insulation panel. In the process of preparing the vacuum insulated panel and the process of cutting and producing the core material for the vacuum insulated panel, dust and fine fibers are not generated, and environmental pollution and health risks are avoided.

A process and system for producing nonwoven substrates are disclosed. Also disclosed is a forming surface or forming wire for producing the substrates. The forming surface includes a pattern of high porosity zones and low porosity zones. The low porosity zones have a non-zero but low porosity. A wet suspension of fibers is deposited onto the forming surface to form nonwoven substrates having areas of high basis weight and low basis weight. The low porosity zones have a width dimension that is greater than the average fiber length of at least some of the types of fibers contained in the fiber furnish to form substrates having exceptional properties, especially with respect to fluid control properties.

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.

Disclosed are multi-ply tissue products, particularly creped and through-air dried tissue products, having cloth like properties, such as good drapability and durability. For example, the products generally comprise two plies and have a geometric mean slope (GM Slope) less than about 10.0 kg and a geometric mean tensile energy absorption (GM TEA) of about 15 g·cm / cm2 or greater. In certain instances, the tissue products also have a low degree of stiffness, such as a Stiffness Index less than about 5.00. The tissue products may be prepared from webs manufactured by a print-crepe process that deposits a latex polymer on at least one of the outer surfaces of the tissue web.

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.

Web material structuring belts that impart structure to a web material during a web material structuring operation and / or structured web material forming operation, method for making same and methods for using same to make structured web materials, for example structured fibrous structures, such as structured sanitary tissue products such as structured toilet tissue, structured paper towels and structured facial tissue are provided.

A paper machine clothing, in particular a seam felt for use in the press section of a machine for producing a fibrous web, wherein the paper machine clothing (1) comprises at least one basic structure and at least one layer of staple fibers or short fibers arranged on the basic structure, the at least one short fiber layer being arranged on the side facing the fibrous web and / or on the side facing the machine, wherein the paper machine clothing comprises at least one seam region in which seam loops are connected to one another by at least one plug wire to form a loop of the paper machine clothing, and wherein the at least one short fiber layer is separated in the region of the seam region by at least one cut to form a seam cover and a seam wedge, wherein at least one connecting element (20) is inserted between the seam cover and the seam wedge, wherein the at least one connecting element is connected to the short fiber material of the seam cover and / or the seam wedge in a fitting manner, in particular welded. A method for using such a paper machine clothing.

The utility model discloses a closed gas hood for papermaking ventilation, and relates to the technical field of papermaking, the closed gas hood comprises a supporting bottom plate, the bottom surface of the supporting bottom plate is uniformly and fixedly connected with bottom cushion blocks through threads, the top surface of the supporting bottom plate is buckled with a sealing hood body, and the top surface of the sealing hood body is uniformly and fixedly provided with adjusting cylinders; a control panel is fixedly clamped to the side edge of the supporting bottom plate, side through grooves are symmetrically formed in the two side edges of the sealing cover body, a ventilation pipeline is horizontally inserted into one side edge of the supporting bottom plate and one side edge of the sealing cover body, an air channel groove is horizontally formed in the top face of the supporting bottom plate, and a supporting net plate is horizontally clamped to the top face of the inner side of the supporting bottom plate. A sealing top groove is formed in the top face of the supporting bottom plate, a control main board is fixedly connected to the inner side wall of the control panel in a clamped mode, an electric overall overturning opening structure is adopted so that feeding and discharging can be more convenient, and meanwhile various requirements for ventilation use can be met through an adjustable interval structure.

The application discloses a preparation method of high-strength and high-heat-resistance para-aramid nanometer paper; the method uses para-aramid short-cut fibers as raw materials, adopts pressurized CO2 to obtain aramid nanometer fiber gel through one-step reaction, then uses water washing and pressing under vacuum suction to obtain aramid paper embryo, and finally obtains para-aramid nanometer paper through drying; the prepared aramid nanometer paper has a thickness of 0.01-0.16 mm and has the characteristics of high strength and high heat resistance; the preparation process is simple, the requirement for equipment is low, and the method is beneficial to industrialized production.

The invention relates to a machine (1) and to a corresponding method for producing a dry-laid fibrous web (309). The machine (1) comprises: a solidifying device (8) for solidifying the flat fiber fabric (300) by applying pressure in a press nip (84) which is formed by two press rolls (86, 88); a connecting belt (102) for transporting the flat fiber fabric (300) to just before the press nip (84); and a transfer belt (103) for receiving the fiber fabric (305) solidified by the press nip (84) just after the press nip (84) so that the flat fiber fabric (300) is guided through the press nip (84) without support. At least one of the two press rolls (86, 88) and / or the connecting belt (102) and / or the transfer belt (103) can be adjusted with respect to the position thereof such that the angle at which the fiber fabric (300) enters the press nip (84) and / or the angle at which the solidified fiber fabric (305) leaves the press nip (84) can be controlledly adjusted.

The invention provides high-humidity base paper and a quantifiable preparation process thereof, and relates to the field of paper production and processing. Comprising the following raw materials in percentage by mass: 15%-25% of softwood pulp, 40%-55% of hardwood pulp, 10%-25% of soft fibers, 10%-20% of nanocellulose, 0.5%-1.5% of vegetable fat polymer composite microspheres and 1%-3% of functional aids, wherein the solid content of aqueous suspension of the softwood pulp and the hardwood pulp is 3%-8%; the nano cellulose is subjected to surface modification treatment. According to the paper, coniferous wood pulp long fibers, hardwood pulp short fibers and soft fibers are utilized to form a three-dimensional framework, nano-crystalline cellulose enhances wet load transmission through a nanoscale bridging network, vegetable fat microspheres construct a hydrophobic layer to inhibit moisture permeation, the three components have a synergistic effect, so that the wet tensile strength is improved, and meanwhile, high air permeability is kept; and the balance of water resistance and ventilation is realized.

The invention relates to the technical field of papermaking, in particular to a preparation method of high-definition electronic screen protection paper. According to the method, regenerated cellulose fibers serve as main raw materials, functional composite fibers of a core-shell structure are constructed, a core layer is the regenerated cellulose fibers, a shell layer is a polypyrrole / graphene composite conductive layer, and the lasting antistatic performance is achieved; meanwhile, the surface-modified nano silicon dioxide aerogel particles are introduced, so that the optical performance and the mechanical strength are improved; then compounding with polyimide fibers modified by a silane coupling agent, adding a bio-based wet strength agent and a fluorocarbon defoaming agent, and carrying out the steps of plasma pretreatment, pulping, on-net papermaking, controllable drying, magnetron sputtering surface treatment and the like to prepare the protective paper. The obtained protective paper has the characteristics of being ultrathin, high in strength, high in light transmittance, lasting in antistatic property and the like, and is suitable for protection of high-end liquid crystal display screens and OLED screens.

The present invention discloses aramid insulation paper, a preparation method, and applications, relating to the technical field of aramid paper. The present invention utilizes cellulose treated with a treatment agent A and aminosulfonic acid in combination with meta-aramid chopped fibers treated with the treatment agent A to produce aramid insulation paper with excellent mechanical properties and resistance to high-frequency partial discharge and high temperatures.

A network-based system and method for providing desired moisture set point values for individual papers lines based on the physical properties of each liner and the atmospheric conditions associated with a corrugator is disclosed. The desired moisture set point values are based on the hygroexpansivity of each individual paper liner. Once the moisture set point value has been determined, a conditioning apparatus adjusts a moisture value for each liner in order to tune the post-warp characteristics of the final corrugated product.

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

The present invention is an apparatus and a process for forming a fibrous web comprising short fibers and optionally particulate material, whereby the apparatus respectively the process is adapted to provide well defined straight and sharp longitudinally extending lateral edge, preferably further allowing easy adjustment of the web width.

The present invention is an apparatus and a process for forming a fibrous web comprising short fibers and optionally particulate material, whereby the apparatus respectively the process is adapted to provide an easy and quick adjustment of the cross-directional width of the web by varying the distancing of the lateral walls of the housing.

To provide a sheet manufacturing apparatus with a simple configuration that reduces leftover powder. [Solution] The sheet manufacturing apparatus 1 comprises a supply unit 200 for supplying powder, a mixing unit 33 for mixing fibers and the powder to form a mixture, a deposit unit 50 for depositing the mixture to form a web W, and a molding unit 70 for compressing the web W to form a sheet. The supply unit 200 comprises a cylindrical container for storing the powder, a cylindrical inner wall 221 into which the cylindrical container can be inserted, a holding unit 220 that can contact the cylindrical container, and a drive unit 230. When the cylindrical container is inserted into the holding unit 220, the holding unit 220 and the drive unit 230 hold the cylindrical container, and the roller surface of the drive unit 230 is provided with a plurality of first protrusions 336, and the outer surface of the cylindrical container is provided with a plurality of second protrusions 317, and the plurality of first protrusions 336 and the plurality of second protrusions 317 interlock.

The invention belongs to the field of paper for aluminum electrolytic capacitors, and particularly relates to a high-voltage-resistance and high-liquid-absorption composite electrolytic capacitor diaphragm and a preparation method thereof. The diaphragm is formed by compounding at least two layers of high-density base paper, and intermittent point-like bonding is carried out between the base paper through a hydrophilic high-molecular polymer according to the surface coating area of 10-40% and the gluing amount of 0.1-10g / m, so that the pore structure between the paper is reserved while the breakdown voltage is ensured to be increased, the liquid absorption capability is remarkably improved, and the equivalent series resistance (ESR) is reduced. The high-pressure diaphragm solves the problem that pressure resistance and liquid absorption performance of an existing high-pressure diaphragm are difficult to consider, and has the advantages of being simple in structure, excellent in electrical performance, suitable for large-scale production and the like.

The invention discloses a compound herbal puffed body as well as a preparation method and application thereof. The preparation method comprises the following steps: adopting compound herbal raw materials; crushing the compound herbal raw materials, and performing puffing treatment; and preparing the compound herbaceous puffed body. The compound herbal puffed body is prepared by adopting the preparation method. The invention further provides application of the compound herbal puffed body. The periphery of the compound herbal puffed body is wrapped with paper to be made into moxibustion sticks or incense. According to the present invention, the formula of the puffed body material prepared from the compatibility of the traditional Chinese medicinal materials and the plants is adopted, the advanced assay and test technology is adopted, the advanced puffed body preparation technology is adopted after the pharmacological experiment, and the puffed body or the filamentous puffed body is adopted; and the moxibustion or incense is prepared in a manner of wrapping paper outside. When the product is actually used, not only is the requirement of moxibustion therapy met, but also the requirement of daily incensing is met, and the practical value and the market value of being multiple in product variety, wide in audience range and wide in use scene are achieved.

The invention relates to the technical field of papermaking, and particularly provides blue gray spunlace non-woven fabric base paper and a production process thereof. The raw paper comprises the following components in parts by weight: 90-120 parts of a fiber raw material, 1.5-2.6 parts of a coloring system, 6.5-13 parts of a color fixing system, 3.5-6 parts of a hydrophobic modification system and 0.5-2 parts of an auxiliary agent system. According to the invention, the mesoporous inorganic particles and bentonite in the coloring system are used for synergistically bearing the blue-grey composite dye, so that dye agglomeration is inhibited and nanoscale uniform dispersion is realized; acrylamide in the color fixing system is polymerized to form a physical network structure to construct a chemical color locking layer, so that the dye is doubly locked; in a hydrophobic modification system, liquid paraffin and stearic acid are self-assembled on the surface of the fiber to form a hydrophobic membrane, so that water dyeing is effectively prevented; all the functional components are stably distributed in the slurry and participate in curing and film forming, and the raw paper is endowed with excellent performance such as high color fastness and low decolorization rate through overall synergy.

The preparation method of the environment-friendly anti-aging packaging base paper comprises the following steps: taking softwood pulp and dissolving pulp, pulping for the first time, adding microcrystalline cellulose, and stirring to form first pulp; adjusting the pH value of the first slurry to be neutral, adding a water-soluble chitosan-polyphenol compound, and pulping for the second time to form second slurry; adding oxidized sodium alginate into the second pulp, and pulping for the third time to form third pulp; forming raw paper according to a papermaking process; the invention further provides packaging base paper which has the characteristic of good anti-aging performance. Softwood pulp and dissolving pulp are used as papermaking raw materials, microcrystalline cellulose, a water-soluble chitosan-polyphenol compound and oxidized sodium alginate are used, a pulping process which is sequentially added according to a sequence is formed, a stable fiber network is constructed layer by layer, and a mechanism of skeleton supporting, covalent crosslinking and antioxidant end capping is formed. The anti-aging performance of the raw paper is improved.

The invention discloses a high-toughness carton and a preparation method thereof, and relates to the technical field of papermaking and environment-friendly packaging materials. The carton is made of a high-toughness composite corrugated board, and raw materials of the carton comprise main material pulp fibers, cross-linked modified nanocellulose, a modified starch adhesive, a wet strength agent and a rheology modifier. The cross-linked modified nano-crystalline cellulose is nano-crystalline cellulose of which the surface is grafted with a hyperbranched supramolecular cross-linking agent. According to the method, by preparing the nanocellulose with the surface grafted with the hyperbranched cross-linking agent, a mechanism capable of dissipating energy is constructed in a fiber network, and compared with the prior art, the defect that regenerated fibers are large in brittleness can be effectively overcome, and the dynamic impact toughness of the carton is remarkably improved. By using the modified starch adhesive disclosed by the invention, an adhesive layer has better ductility and interlayer binding force, and when a paperboard is stressed and deformed, the adhesive layer can be deformed along with the deformation and is not easy to break, so that the stability of interlayer binding is favorably kept.

The application provides a preparation method of high-conductivity carbon fiber paper and belongs to the technical field of fuel cells. The method comprises the following steps: step 1, dissolving a water-soluble polymer in water to prepare a dispersion liquid with a certain concentration; step 2, dispersing short-cut carbon fibers with a certain thickness of metal plating layer in the dispersion liquid to prepare a fiber slurry; step 3, performing wet papermaking on the slurry, and performing pressing and drying to prepare a raw paper; and step 4, performing high-temperature hot pressing treatment on the raw paper under a reducing atmosphere and a certain pressure to prepare a primary carbon paper. The prepared carbon paper has an electrical resistivity less than 3 mΩ·cm, a porosity greater than 80%, and a gas permeability greater than 2200 ml·mm / [cm 2 ·h·mm·Aq]. The application improves the electrical conductivity of the carbon paper and the gas permeability of the carbon paper, and the process is simple, and the performance of the fuel cell can be obviously improved.

To provide a paper making felt and a cutting method of the paper making felt that can prevent deposition of fragments of yarns to a felt surface by excellent visibility of fragments of yarns caused by cutting.SOLUTION: A paper making felt 5 is assembled with a base cloth 30 and a batt fiber layer laminated on the base cloth 30, wherein the base cloth 30 has luminescence parts 10A, 20A, 30A comprising a plurality of luminescent yarns arranged over total lengths in a width direction (CMD) and a height direction (MD) so as to fragment the base cloth, and is provided with a broken-line mark 61 which points a position of the luminescence part 10A and broken-line marks 64, 65, 66 which point the position of the luminescence part 20A. In a cutting method of the paper making felt, sites having the luminescence parts 10A, 20A, 30A are cut based on the marks 61, 64, 65, 66.SELECTED DRAWING: Figure 10