508results about "Machine wet end" patented technology

The present disclosure relates to a method for manufacturing a multiply paperboard on a paperboard machine. The method comprises the steps of - forming a middle-ply web from a first furnish comprising at least 20 wt% of CTMP on a first forming wire, - dewatering the middle-ply web on the first forming wire in a first dewatering zone, - dewatering the middle-ply web (3) between the first forming wire (1) and a second forming wire (6) in a second dewatering zone (5), which second dewatering zone (5) comprises at least one suction unit (7) and dewatering blades (8), which dewatering blades (8) are in contact with the second forming wire (6), and at least two loadable dewatering blades (9a, 9b, 9c, 9d) in contact with the first forming wire (1), wherein the loading pressure applied by each of the loadable dewatering blade (9a, 9b, 9c, 9d) is in the range of between 0.1 – 25 kPa -kPa, - forming a top-ply web from a second furnish and a back-ply web from a third furnish, - couching the said webs to form a three-ply web wherein the middle ply web is arranged between the top- and back ply web, - pressing the three-ply web in a press section, - drying the pressed web in a drying section and - reeling the web. The paperboard manufactured according to the present invention exhibits an excellent formation and a high z-strength.

The invention belongs to the technical field of high polymer materials, and particularly relates to a high-strength papermaking forming net fiber. Comprising the following raw materials in parts by weight: 75-90 parts of polyethylene glycol terephthalate, 5-15 parts of polybutylene terephthalate, 3-10 parts of a modified fiber filler, 2-5 parts of modified graphene, 2-8 parts of silicon dioxide, 0.5-2 parts of a silane coupling agent KH-560, 1-3 parts of an anti-hydrolysis agent, 0.5-1.5 parts of an antioxidant and 0.3-1 part of a lubricant. Wherein the modified fiber filler is prepared by sequentially carrying out modification processes such as silane coupling agent, citric acid-glycerol esterification, iron bismuth oxide loading and the like on glass fibers; the modified graphene is prepared by introducing dopamine, cerium ions and glycidyl methacrylate for modification. The mechanical strength, the hydrolysis resistance and the wear resistance of the fiber are remarkably improved through the synergistic effect of all the components and the melt spinning-multi-stage stretching process, and the fiber is particularly suitable for a forming net of a high-speed paper machine.

A method of forming a fibrous web on a papermaking machine including the steps of depositing a dilute fiber slurry out of a headbox to a forming area comprising a forming surface made up of a structured fabric, wherein the structured fabric is supported by a breast roll and a forming roll, and the forming area is devoid of any additional fabrics or belts other than the structured fabric, draining the dilute fiber slurry through the structured fabric, and drying the fiber slurry.

An electronic device for determining a location of a seal strip device in a strip of a papermaking machine includes a seal strip location identification component associated with the seal strip device, a current monitoring circuit configured to measure a current through the seal strip location identification component that is associated with the seal strip device, and a location circuit configured to transmit information related to the current through the seal strip location identification component, and configured to receive an address related to the location of the seal strip device. Related methods and systems are also described.

A sheet manufacturing apparatus includes a defibrator that defibrates a paper piece to form a defibrated material, an accumulator that accumulates the defibrated material on a mesh belt to form an accumulating material, a forming machine that forms the transported accumulating material to produce a strip-shaped sheet, and a return mechanism that sends a residual accumulating material that is the defibrated material being accumulating to the defibrator on condition that the accumulator has stopped or is stopped during accumulation.

The utility model provides a paper pulp extrusion papermaking device, and belongs to the technical field of papermaking. Comprising a base mounting frame, a hydraulic push rod is mounted above the base mounting frame, and an extrusion head is connected to the top end of the hydraulic push rod. Through the arrangement of the processing mechanism, a worker places paper pulp needing to be extruded in the processing box in advance, the extrusion head is driven by the hydraulic push rod to extrude the paper pulp, and after extrusion processing is completed, when the worker needs to process the paper pulp splashed on the inner wall of the processing box, the extrusion head is driven by the hydraulic push rod to extrude the paper pulp. The electric push rod can be started in advance to enable the top end of the electric push rod to be connected with the scraping frame to be separated from the embedded groove formed in one side of the inner side of the storage box, and then the motor is started to enable the transmission rod and the driving gear to rotate. Therefore, the gear ring can drive the rotating ring frame fixed in the middle of the gear ring to be matched with the sliding block and the sliding frame to conduct circumferential movement in a guiding mode, and therefore the scraping frame can be indirectly driven to conduct paper pulp scraping treatment along the inner side of the containing box.

A method of forming a fibrous web on a papermaking machine including the steps of depositing a dilute fiber slurry out of a headbox to a forming area comprising a forming surface made up of a structured fabric, wherein the structured fabric is supported by a breast roll and a forming roll, and the forming area is devoid of any additional fabrics or belts other than the structured fabric, draining the dilute fiber slurry through the structured fabric, and drying the fiber slurry.

The invention discloses high-flux filter paper for water filtration and a preparation method thereof. The method comprises the following steps: by taking natural silkworm cocoons as a silk fibroin fiber raw material, preparing silk fibroin fibers through a synergistic effect of solvent dissolution and mechanical stripping; the silk fibroin fibers and the polyester long and short fibers form an interwoven network structure through a physical entanglement and electrostatic assembly technology; the silk fibroin fiber / polyester long fiber / polyester short fiber high-flux water filtering filter paper is prepared from polyester long and short fibers serving as a filtering framework and silk fibroin fibers through a wet papermaking process. The silk fibroin fiber / polyester long fiber / polyester short fiber high-flux water filtration filter paper obtained by the invention has high flux and high toughness through bionic cobweb multistage structural design, effectively filters water pollutants such as fine particulate matters and micro-nano plastic particulate matters, and is suitable for high-precision filtration in severe environments such as a cooling water system and radioactive wastewater treatment.

A method for coating products is provided. The method includes the steps of applying a coating liquid to a product and removing excess coating liquid from the product. It is desirable to provide a method for efficiently and reliably coating delicate or easily deformable products, such as products molded from a pulp fiber slurry. The method includes fixing the product to a receiving portion of a product carrier that is configured in the same shape as the product, such that an exterior surface of the product abuts the interior concave surface of the receiving portion of the device. A coating liquid is applied to the product in the product carrier. The product carrier is affixed to a centrifuging device and the coating liquid is dispersed over the surface of the product using centripetal force.

The invention discloses a preparation method of degradable napkin based on natural plant fibers, and relates to the field of hygienic products. According to the preparation method of the degradable napkin based on the natural plant fibers, natural cellulose raw materials such as the sisal hemp waste residues and the banana stalks are adopted, the source is wide, and the cost is low. Raw materials are cleaned, crushed and degummed to prepare crude fiber bundles, and the crude fiber bundles are converted into soft microfibrillated cellulose colloid through enzyme treatment. Defibering part of the colloid into long-fiber matrix pulp, homogenizing the other part of the colloid at high pressure to prepare short-fiber reinforced pulp, mixing the long-fiber matrix pulp and the short-fiber reinforced pulp to obtain reinforced pulp, and performing papermaking, drying and calendering to prepare the raw paper. According to the process, through fiber softening treatment, the softness and hand feeling of the paper are remarkably improved while the toughness is kept, and the process is suitable for napkin production. A green biotechnology is adopted in the whole process, the pollution load is low, chemicals are biodegradable, and the requirements for low cost and environmental protection are met.

The invention discloses a carbon fiber paper-based material and a continuous calendering enhancement method thereof. The preparation method specifically comprises the following steps: repulping, grinding, defibering and sieving meta-aramid pulp, and then mixing with defibered and dispersed short carbon fibers to prepare paper pulp; sequentially carrying out forming, dewatering, squeezing and drying treatment on the slurry to obtain a carbon fiber base paper coiled material; and carrying out continuous calendaring enhancement treatment on the carbon fiber raw paper coiled material to obtain the carbon fiber paper. According to the method, the purpose that the temperature is higher than the glass transition temperature (larger than or equal to 273 DEG C) of the meta-aramid pulp can be achieved, the purpose of conducting hot pressing on the carbon fiber base paper can be achieved, the large-batch and continuous production requirements of the carbon fiber paper can be met, and the production efficiency is greatly improved.

This invention provides a sheet manufacturing apparatus for homogenizing the in-plane moisture content of a sheet. The sheet manufacturing apparatus manufactures sheets from a fibrous material and includes: an accumulation section that accumulates the fibrous material by an airflow to form a sheet; a sheet conveying section having a conveyor belt that contacts and holds one side of the sheet; a humidification section disposed opposite to one side of the conveyor belt and supplying moisture from the other side of the sheet; and a suction section disposed opposite to the humidification section across the conveyor belt, the suction section having a plurality of suction ports for suctioning air, the humidification section having an outlet for discharging humidified air, and a first suction port and the outlet being arranged facing each other.

The utility model discloses a corrosion-resistant ceramic dehydration water scraping plate which comprises a base, a ceramic dehydration seat is arranged on the base, a dehydration cavity is formed in the ceramic dehydration seat, the dehydration cavity extends upwards to be provided with a water absorption groove, and a negative pressure adsorption pipe is arranged on the side wall of the ceramic dehydration seat. A supporting frame is arranged on the base, a first electric push rod is arranged on the supporting frame, a mounting frame is arranged at the bottom end of the first electric push rod, a ceramic scraping plate is arranged on the mounting frame through a bearing, and a second electric push rod is hinged between the ceramic scraping plate and the mounting frame; according to the utility model, the dewatering efficiency and the flexibility during dewatering and scraping can be improved.

The invention discloses a system for purifying and separating papermaking white water fine stickies, and belongs to the technical field of pulping and papermaking wastewater treatment. Comprising a physical grading deslagging unit, a chemical modification treatment unit, a biological enzymolysis reaction unit and a slurry forming unit which are sequentially communicated through a conveying pipeline I, wherein a conveying pipeline II is arranged between a feeding hole of the physical grading deslagging unit and a waste slurry discharging hole of the slurry forming unit, and a white water deep filtering unit is arranged on the conveying pipeline II; the physical grading deslagging unit, the chemical modification treatment unit, the biological enzymolysis reaction unit and the white water deep filtering unit can form a white water backflow circulation path through a conveying pipeline I and a conveying pipeline II. The system for purifying and separating the fine stickies in the papermaking white water, disclosed by the invention, can realize graded and accurate removal of the stickies with large, medium and small particle sizes in the papermaking white water, and effectively solves the problems of deposition and scaling of the stickies in equipment.

The utility model discloses a kind of high-pressure cleaning devices of hair cloth for papermaking, it is related to papermaking technical field, and its technical solution main points include linear module, the slider of linear module is fixedly connected with base, base is provided with cleaning tank, cleaning tank is opened with cleaning port on the side close to hair cloth, the inside fixed connection of cleaning tank has support, multiple spray heads are installed on support, the nozzle of multiple spray heads are all towards hair cloth, the end of multiple spray heads far from hair cloth is respectively communicated with water supply pipe, multiple water supply pipes all penetrate cleaning tank, the inside rotation connection of cleaning tank has extruding roller, extruding roller and hair cloth resist contact;Water stream that spray head sprays passes through cleaning port and washes hair cloth in operation, most water is splashed back into cleaning tank, the rest part water is inhaled by hair cloth, water in hair cloth can be squeezed out by extruding roller, residual paper pulp fiber and other impurities can be together fallen into cleaning tank with squeezed water, and cleaning effect is better.

The utility model discloses a positioning cutting device for paper production, which comprises a gas insulation cover used for being mounted on a water needle and a negative pressure box used for being mounted at the bottom of a forming net of a paper machine, the gas insulation cover is provided with a gas inlet hole, the negative pressure box is provided with an exhaust hole, and the top wall of the negative pressure box is provided with an airflow channel at the position corresponding to the water needle. The air isolation cover is installed on the water needle, the negative pressure box is installed at the bottom of the forming net of the paper machine, when the water needle conducts positioning cutting, the negative pressure box provides negative pressure, air enters from the air inlet of the air isolation cover, passes through the forming net and then enters the airflow channel, splashing paper pulp is pressed on paper through the air entering the air isolation cover, and therefore the paper pulp is prevented from splashing. And when the air passes through the cutting gap on the paper, the paper pulp on the cutting gap can be sucked out downwards.

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

The invention relates to a method for adjusting a component, in particular a functional roller, for a machine for producing or processing a fibrous web, the component having at least one adjustment device for adjusting an operating state of the component, the method comprising the following steps: carrying out an image capture and / or video capture of the exterior of the component and transmitting the capture to a computing unit; determining an actual value of the operating state by means of the computing unit by image analysis of the image capture and / or video capture of the exterior of the component and / or by the acquisition of values from an embedded sensor system. On the basis of the determined actual values of the operating state: presenting metainformation regarding the adjustment of the adjustment device by overlay with the image capture and / or video capture on a display.

The utility model discloses a paper machine dry net double-side synchronous tensioning adjusting device which comprises an installation base, an installation groove is formed in the top of the installation base, a synchronous adjusting component is installed in the installation groove, and the synchronous adjusting component is connected with two stand columns. A clamping part for clamping and fixing the end part of the dry net for the paper machine is mounted at the top of the stand column; wherein the clamping component clamps the two sides of the dry net at the same time, and the synchronous adjusting component can drive the two sides of the dry net to synchronously move oppositely and oppositely. According to the utility model, the synchronous adjusting part is used for synchronously tensioning and adjusting the two sides of the dry net, so that the dry net keeps uniform tension in the operation process, the situation of local looseness or over-tightness is avoided, and the dry net is conveniently disassembled, assembled and fixed through the clamping part, so that the stability of fixing the dry net is guaranteed.

The invention relates to the technical field of papermaking, and provides a composite fiber material and a preparation method thereof.The composite fiber material comprises a reinforcing layer and a functional layer which are arranged in a stacked mode; the reinforcing layer comprises matrix-fibril type composite fibers, and the matrix-fibril type composite fibers comprise synthetic fibrils and matrix fibers covering at least part of the surfaces of the synthetic fibrils; the functional layer comprises a skin-core type composite fiber, and the skin-core type composite fiber comprises a core layer and a functional skin layer wrapping at least part of the surface of the core layer. According to the invention, the interface bonding and load transmission efficiency of synthetic fibrils and a cellulose network is improved on the enhancement layer, and a high-strength bearing skeleton is constructed; the functional layer limits functional components on the surfaces of the fibers to form a stable functional skin layer, so that the functional components are prevented from forming a weak boundary layer among the fibers and weakening fiber bonding; the two layers cooperate to realize that the paper-based material keeps high strength and reduces the interlayer stripping risk while obtaining the target surface function.

Methods and apparatuses for producing a substrate are described. A method and apparatus for introducing a component into a fluid supply is also presented. A method can include providing a first fluid supply. The fluid supply can be configured as a foam in some embodiments. The method can also include providing a component feed system and a supply of the component. The method can include introducing the component to a fluid supply in an eductor in some aspects. A resultant slurry including a fluid supply and the component can be transferred through a headbox. The resultant slurry can be dewatered to provide a substrate including the component.

The utility model provides an automatic cleaning device for a papermaking net for papermaking, and relates to the technical field of papermaking equipment. The device comprises a numerical control machine tool, a supporting frame is fixedly connected to the upper portion of the numerical control machine tool, a draught fan is fixedly installed in the supporting frame, a transmission mechanism is arranged below the supporting frame and comprises a transmission frame and a connecting rotating rod, a transmission connecting rod is fixed to the bottom face of the transmission frame, and the transmission connecting rod is connected with the supporting frame. And the bottom end of the transmission connecting rod is fixedly connected with a cleaning brush plate. According to the paper-making mesh cleaning device, the fan, the coupler, the transmission frame, the cleaning brush plate and the like are arranged, and the fan can drive the cleaning brush plate to clean a paper-making mesh while rotating through the transmission matching relation between the coupler and the transmission frame, so that the situation that fibers in mesh holes are adhered to the mesh holes after meeting water, and the unevenness of the paper-making mesh is aggravated is avoided; the subsequent operation of flushing the papermaking mesh is facilitated, and the automation degree of cleaning the papermaking mesh by the device is improved.

A papermaking fabric having a paper side (PS) and a machine side (MS) and being formed of a system of MD yarns interwoven with a first system of CD yarns, including first CD yarns, in a fabric weave pattern, with the fabric body including a plurality of pockets. The pockets have MD edges defined on first and second sides by floats / knuckles of one of the MD yarns and a next adjacent MD yarns, and first and second ends defined by a portion of a float or knuckle of a middle one of the MD yarns over first and second pocket end ones of the first CD yarns. At least 3 adjacent ones of the first CD yarns between the pocket end ones of the first CD yarns extend over the middle one of the MD yarns between the first and second sides. A second system of CD yarns is interwoven with the system of MD yarns, and includes second CD yarns arranged alternating with first CD yarns. At least two consecutive ones of the second CD yarns are arranged over the middle one of the MD yarns between the first and second pocket end ones of the first CD yarns. The second CD yarns reduce the amount of open spaces in the bottoms of the pockets.

The utility model discloses a kind of papermaking vacuum roll vacuum box sealing device, belong to papermaking vacuum roll field, the upper end of vacuum box is equipped with sealing cover, the lower end of barrel is equipped with movable support, limiting baffle compatible with sealing cover, limiting baffle limits movable support to drop, limiting baffle is fixed on vacuum box by fastening bolt;First sealing cavity, second sealing cavity are sequentially opened from top to bottom between movable support, sealing cover and limiting baffle, first sealing support is connected in the cavity of first sealing cavity, first sealing support and movable support are filled with first sealing filler. Movable support extrusion makes sealing support and sealing filler closely combine, improve sealing reliability. Two sealing supports are respectively arranged in two sealing cavities, and sealing filler is filled between movable support and sealing cover, double sealing is formed, to prevent vacuum box internal negative pressure leakage. Sealing cover and vacuum box integration, enhance sealing performance at the connection of barrel.

To provide a pollution prevention agent composition sufficiently excellent in pollution prevention effect and its long-lasting property.SOLUTION: The invention relates to a pollution prevention agent composition used in applying to a dry part D of a papermaking process and comprises an emulsion composed of a silicone-based oil which is liquid at an ordinary temperature, an aqueous medium which is liquid at an ordinary temperature, and a dispersant for dispersing the silicone-based oil in the aqueous medium, wherein the aqueous medium is composed of water and a polyhydric alcohol dissolved in water, a boiling point of the polyhydric alcohol is higher than 100°C, a blending ratio of the silicone-based oil to 1 pt.mass of the polyhydric alcohol is 0.5-50 pts.mass, a blending ratio of water to 1 pt.mass of the polyhydric alcohol is 25-300 pts.mass, and a blending ratio of the dispersant to 1 pt.mass of the polyhydric alcohol is 0.1-50 pts.mass.SELECTED DRAWING: Figure 1

A method for manufacturing a deflection member is disclosed. The method may include the steps of providing an additive manufacturing apparatus that includes at least two radiation sources and photopolymer resin, providing a reinforcing member, contacting a surface of the reinforcing member with the photopolymer resin, and directing radiation from the radiation source(s) towards a surface(s) of the reinforcing member to at least partially cure photopolymer resin in contact with the surface of the reinforcing member.

A process and system for foam forming webs is disclosed. The method includes depositing a first foamed suspension of fibers onto a forming surface while the forming surface is moving in order to form an embryonic web and depositing a second foamed suspension of fibers onto the embryonic web while the forming surface is moving in order to form another layer on the embryonic web. An angled end of the dividing lamella directs a flow of the second foamed suspension of fibers proximate the angled end of the dividing lamella substantially parallel to the forming surface.

The invention belongs to the technical field of papermaking technologies, and particularly relates to a glass packing paper anti-counterfeiting mark preparation process and method, and the glass packing paper anti-counterfeiting mark preparation process and method comprises the following steps: in a forming stage when the dehydration rate of wet paper sheets at a net part of a paper machine is 40-60%, vertically spraying 0.1-0.3 MPa high-pressure clean air flow at 90 + / -5 degrees, impacting the unformed paper pulp to directionally rearrange local fibers, and drying to form an anti-counterfeiting mark which can be distinguished by naked eyes; the method further comprises an equipment system of double-high-pressure air pump pressurization, two-stage 100-mesh filtering, ceramic air needle jetting and pressure regulating valve parameter locking, and batch customization control over the marking width, the position and the display degree is achieved. According to the glass packing paper anti-counterfeiting mark preparation technology and method, no chemical additive is added in the whole process, it is detected that the hygroscopicity, mildew-proof performance and anti-static performance of the glass packing paper are consistent with those of a conventional product, the daily average capacity of a single production line exceeds 50 tons, the anti-counterfeiting mark counterfeiting period is prolonged to 6 months or above, and the technology and method are suitable for large-scale anti-counterfeiting production of high-end glass packing paper.

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.