45results about "Damping devices" patented technology

A sheet manufacturing apparatus 1 includes: a deposition unit 50 that forms a web W; a transport belt 621 that comes into contact with an upper surface of the web W to hold the web W and transports the web W in a transport direction; a suction unit 200 that is provided above the transport belt 621 and causes the web W to be attracted and attached to the transport belt 621 by suction; a humidification unit 265 that faces the transport belt 621 and adds moisture to the web W from below; and a sheet forming unit 70 that presses the web W to form the web W into a belt-shaped sheet P1. The suction unit 200 includes a first duct 210, a second duct 220 provided downstream of the first duct 210, and a third duct 230 provided downstream of the second duct 220. The humidification unit 265 has an outlet 265a for discharging humidified air. The second duct 220 faces the outlet 265a. A plurality of first suction holes 219a and 219b for sucking air are provided in a suction region 213 of the first duct 210. A plurality of second suction holes 229 for sucking air are provided in a suction region 223 of the second duct 220. Diameters of the second suction holes 229 are larger than diameters of the first suction holes 219a and 219b.

To provide a sheet manufacturing apparatus which reduces the frequency of maintenance work.SOLUTION: A depositing unit that forms a web W, a transport belt, a suction unit that is provided above the transport belt and causes the web to be adsorbed to the transport belt by air suction, a humidifying unit that is provided so as to face the transport belt and applies moisture from a lower side of the web, and a sheet forming unit that pressurizes the web and forms the web into a belt-shaped sheet, the humidifying unit includes a discharge port that discharges the humidified air, the second duct and the discharge port are disposed to face each other, a plurality of first sucking holes 219a and 219b that suck air are provided in the sucking region 213 of the first duct, a plurality of second sucking holes 229 that suck air are provided in the sucking region 223 of the second duct, and diameters of the second sucking holes 229 are larger than diameters of the first sucking holes 219a and 219b.SELECTED DRAWING: Figure 4

To provide a method for producing a sheet capable of producing a sheet having sufficient strength dispensing with a resin.SOLUTION: A method for producing a sheet includes: a web-forming process of accumulating a defibrated product by a dry method to form a web; a water-supplying process of supplying water to the web; a pressurizing process of pressurizing the web supplied with water; and a heating process of heating the web supplied with water, where the water content of the web supplied with water in the water-supplying process is 12 mass% or more, the pressure applied to the web in the pressurizing process is 0.2 MPa or more, and the temperature of the web in the heating process is 100°C or lower.SELECTED DRAWING: Figure 2

The utility model relates to the field of corrugated paper production, and discloses a spraying device for corrugated paper production, which comprises a bottom plate, a working table is arranged at the top of the bottom plate, a first conveying belt and a second conveying belt are arranged in an inner cavity of the working table, and the first conveying belt and the second conveying belt are arranged in the inner cavity of the working table through driving rollers. According to the spraying device for corrugated paper production, after a corrugated paper board is placed on the first conveying belt, the first conveying belt and the second conveying belt are driven by the driving mechanism to rightwards convey the corrugated paper board into the spraying bin, the first conveying belt and the second conveying belt are driven by the driving mechanism to convey the corrugated paper board into the spraying bin, and then the corrugated paper board is sprayed to the spraying bin. Meanwhile, a water pipe is connected into the water inlet pipe, water is guided into the two spraying pipes and sprayed out of the spraying heads, when the corrugated board passes through the position between the first conveying belt and the second conveying belt, spraying can be achieved on the two faces of the corrugated board, and the problem that an existing spraying device is difficult to stably install and spray the corrugated board is solved.

The invention discloses a suction transition mechanism of a vacuum steering gear, and relates to the technical field of papermaking processing, the suction transition mechanism of the vacuum steering gear comprises a vacuum box and a mounting seat arranged above the vacuum box, and further comprises a connecting assembly. When the vacuum steering gear carries out suction transition operation on paper sheets between a net part and a pressing part of a paper machine, through the arrangement of each group of ceramic panels, the paper sheets are smoothly sucked and transited by the arc-shaped panels, the subsequent separation of the paper sheets is facilitated, the equipment is basically not required to be maintained, the flexible transition operation of the paper sheets in the papermaking processing process is ensured, and the production efficiency is improved. During suction transition operation, the situation that the sucked paper sheets are embedded into the strip-shaped grooves due to the pressure effect due to the fact that the suction pressure is too large when the paper sheets are subjected to suction transition in a suction mode actually, subsequent separation is not convenient, and even damage is caused in the suction process is avoided; and the protection effect on the paper sheets in the suction transition process is further ensured.

A method and device for regulating and / or controlling at least one dampening device having a valve, suitable for dampening a material web (8), in particular a paper material web, a cardboard material web or a fibrous material web, wherein the dampening device is capable of carrying out a cleaning cycle (12), and the valve is configured as a proportional valve, which pulses by a set target value (11) and, by timing control, causes deviations from the set target value (11) so that positive and / or negative deviations with respect to the target value occur.

The invention provides a hot-pressed kraft paper drying device. The hot-pressed kraft paper drying device comprises a shell; the conveying unit is arranged in the shell and is used for conveying the kraft paper; the drying unit is arranged in the shell and is used for drying the kraft paper; the demisting unit is arranged in the shell and is used for removing steam in the shell; the wrinkle removing unit is arranged at one end of the interior of the shell; and the first driving unit is arranged on one side of the shell and is connected with the conveying unit and the wrinkle removing unit. The two wrinkle removing rollers rotate to remove wrinkles on kraft paper, the kraft paper is extruded through bristles on the wrinkle removing rollers and the wrinkle removing rollers, wrinkles on the surface of the kraft paper can be smoothed under the action of rotation, and then the wrinkle removing purpose is achieved.

Method for the automated optimization of a quality profile (1) of a paper, cardboard or fiber web (web) (2), comprising a quality measurement system (3), an actuator system (5) and a control system (8), wherein the following steps are performed: • wherein a maximum value is controlled for at least one actuator (6), wherein the effectiveness of the order is determined at the maximum value using the quality measurement system (3), • the actuator (6) is controlled stepwise to the minimum value, whereby the effectiveness of the order is determined for each step using the quality measurement system (3), • a characteristic curve (12) for the actuator (6) is calculated, which is used by means of the control system (8) to achieve the required quality profile (1) of the track (2). Furthermore, the invention relates to a profiling system.

The application provides a humidifying box of a paper humidifying device, which comprises an upper box body and a lower box body, the upper box body and the lower box body are hinged at one end and connected by a gas cylinder at the other end; after the upper box body and the lower box body are closed, a cavity is formed between the two box bodies, a paper feeding and discharging gap for feeding and discharging paper is left in the cavity, and the rest part is completely closed; a steam gap for spraying steam is arranged below the upper box body and above the lower box body.

The invention provides processing equipment for overcoming warping of paper edges. The processing equipment comprises a water feeding device, a drying device and a cooling device which are sequentially arranged along a raw paper flowing line, the water feeding device is used for providing moisture for the raw paper, the drying device is used for drying the raw paper soaked with the moisture, and the cooling device is used for cooling the dried raw paper. According to the processing equipment for overcoming deckle edge warping provided by the embodiment of the invention, by designing a structure with the water feeding device, the drying device and the cooling device, the problem of deckle edge warping can be effectively solved, the smooth and glossy cross section of the zero-plastic paper is realized, and the problems of back papermaking and quality abnormality are reduced; the problems of sharp increase of rejection rate, increase of energy consumption, failure of packaging and sealing, printing deviation, reduction of market trust, increase of carbon footprint and the like caused by hemming of finished products in the production process of zero plastic paper are solved.

The invention discloses a method for improving the flatness of sheepskin surface paper of a paper tube, which comprises an unwinding frame, a gluing device and a tensioning guide rod assembly arranged at the feeding end of the gluing device, an infiltration water tank is arranged between the unwinding frame and the tensioning guide rod assembly, and a leveling assembly is arranged between the tensioning guide rod assembly and a glue tank. A water control assembly is arranged at the discharging end of the infiltrating water tank, sheepskin surface paper on the unwinding frame is infiltrated through the infiltrating water tank, the humidity is controlled through the water control assembly, dust on the surface is scraped off, then the sheepskin surface paper is pulled to the tensioning guide rod assembly, and finally the sheepskin surface paper is flattened through the tension and flattening assembly and then enters the gluing roller to be subjected to single-face gluing. Compared with the prior art, the surface paper has the advantages that the tensile strength and the surface tidiness of the surface paper can be improved, the sheepskin surface paper dust is cleaned, meanwhile, the breakage condition is avoided, the surface smoothness of a formed paper tube is remarkably improved, and the surface paper plays a key role in high-speed winding forming and unwinding processing of superfine chemical fiber spinning cakes below 0.55 dtex.

The present invention discloses a steam humidifier device for avoiding high-temperature scalding and its use method, which relates to the technical field of steam humidifier devices; and the present invention includes a transfer mechanism, an elevating mechanism is fixedly installed inside the upper end of the transfer mechanism, and a positioning mechanism cooperating with the elevating mechanism is arranged on the transfer mechanism. A steam humidifier body is fixedly installed on one side of the elevating mechanism away from the positioning mechanism, and a steam guide pipe is fixedly installed at the upper end of one side of the steam humidifier body; through the setting and use of the transfer mechanism, it provides convenience for the convenient movement and stable fixation of the steam humidifier body, thereby providing convenience for the use of the steam humidifier body. Under the coordinated action of the elevating mechanism and the positioning mechanism, the steam humidifier body can be conveniently and quickly moved to a suitable height and stably fixed, so as to meet the use requirements of different heights, and further improve the placement stability and use practicability of the steam humidifier body.

The present invention relates to a method for producing a microfibrillated cellulose (MFC) web. An MFC suspension (2) comprising 50-100 weight-% MFC is provided and an MFC web (4) is formed from the MFC suspension by casting on a non-porous support (5). The MFC web is subjected to water removal to obtain a moisture content of 20 weight-% or less. After water removal the MFC web is separated from the non- porous support, conveyed to a reeling device (8).The method further comprises providing water vapor to a vapor chamber device (11) to provide a relative humidity of 50-99% therein and providing the MFC web in the vapor chamber device after the separation from the non-porous support so as to control the moisture content of the MFC web, wherein the MFC web is provided in the vapor chamber device such that the relative humidity is provided around the MFC web.

A method is specified, for rewetting a web (4) made from paper, wherein the web (4) is guided through a plant (2), wherein the plant (2) comprises a processing unit (10), by way of which the web (4) is processed, wherein, downstream of the processing unit (10), the plant (2) comprises a drying unit (12), for drying the web (4), wherein, downstream of the drying unit (12), the plant (2) comprises a plurality of wetting units (18, 20), by means of which the web (4) is rewetted in multiple stages using a wetting agent, by pre-wetting of the web (4) taking place by way of a first one of the wetting units (18), and post-wetting of the web (4) taking place after a minimum dwell time (T) by way of a second one of the wetting units (20), wherein the minimum dwell time (T) is selected in such a way that the web (4) has an increased absorption speed for the wetting agent in the second wetting unit (20) on account of the pre-wetting. Furthermore, a plant (2) is specified, for processing a web (4) made from paper.

The utility model discloses a toilet paper roll and a rewinding device for production of the toilet paper roll, and belongs to the field of toilet paper and toilet paper production equipment.The rewinding device comprises two rewinding rollers which are horizontally and rotatably arranged, a water distribution pipe is arranged above the two rewinding rollers, and a plurality of atomizing nozzles are evenly arranged on the water distribution pipe in the axial direction of the rewinding rollers. Water or viscous glue liquid is sprayed to a toilet paper layer wound in a toilet paper roll through the atomization spray head, then drying treatment is conducted, a bonded and hardened inner rolling layer is formed in the produced toilet paper roll, the inner rolling layer is used for replacing a traditional paper tube, the manufacturing cost is reduced, and the effects of supporting and convenient hanging can be achieved.

The utility model belongs to the technical field of paper production, and particularly relates to a humidifying mechanism for papermaking production, which comprises a base, a rack is erected above the base, the rack is U-shaped, and humidifying structures are symmetrically arranged in a groove of the rack up and down; the collecting structure is arranged below the rack and comprises a collecting tank and a driving part, the collecting tank is arranged above the base, a groove is formed in one end of the collecting tank, a filter screen and a cleaning structure are arranged at the top of the groove, and the cleaning structure is arranged on the inner wall of the collecting tank and makes contact with the top face of the filter screen; the driving part is arranged between the inner wall of the collecting tank and the cleaning structure and can drive the cleaning structure to reciprocate in the length direction of the filter screen. And through the movably arranged cleaning structure, the top surface of the filter screen can be cleaned, and the filtering efficiency of the filter screen can be improved.

The utility model discloses a mica paper drying device, which relates to the technical field of mica paper processing and comprises a base, one side of the base is fixedly connected with a driving motor, the output end of the driving motor is in transmission connection with a connecting seat, the top of the connecting seat is fixedly connected with a mounting frame, and the top of the mounting frame is connected with a water tank in a penetrating manner. The bottom of the water tank is fixedly connected with a rolling device, the top of the connecting base is fixedly connected with a fixing plate, and one side of the fixing plate is fixedly connected with a heating device. The uniform heat cavity is formed in the heat outlet plate, so that hot air can quickly penetrate through the interior of the heat outlet plate after entering the uniform heat cavity, the heat outlet plate can be easily heated more uniformly, the processing of the mica paper by the device meets the standard, water can be sprayed out in a water mist form, the mica paper is subjected to steam processing by the device, and the processing efficiency is improved. And all water vapor can face the mica paper for supplementary processing, so that the device is more convenient to use.

The utility model relates to the technical field of paper product processing, in particular to a paper product humidifying device for paper product processing, which comprises a humidifying frame, a bottom plate is arranged below the humidifying frame, a printing group and a guide side plate are arranged on the bottom plate, paper raw materials are arranged in the printing group in a penetrating manner, a steam box is arranged on the humidifying frame, and an electric heating wire and an air pump are arranged on the steam box. The air pump is provided with a three-way pipe and an exhaust pipe, the three-way pipe is connected with an air conveying pipe, the air conveying pipe is connected with a telescopic pipe, the telescopic pipe is provided with a wet spraying cover, the wet spraying cover is provided with a wet spraying opening, the wet spraying cover is provided with a pull ring, the guide side plate is provided with a guide motor, the guide motor is provided with a guide roller, and the guide roller is provided with a material blocking disc. According to the paper raw material wet spraying device, effective, comprehensive and symmetrical steam spraying humidification can be conducted on the surface of a paper raw material, the later printing quality of the paper raw material is guaranteed, the humidified paper product material paper raw material is stably guided into a printing set, and the effective humidification distance between a wet spraying cover and the paper raw material is guaranteed.

This utility model discloses a rewetting device for a cured filter paper production line, comprising: a frame; three sets of rollers for supporting the cured filter paper rotatably installed within the frame; a rewetting mechanism for rewetting the filter paper, located on the frame and between the first two sets of rollers in the filter paper conveying direction, the rewetting mechanism including a cover that sprays steam from the bottom of the filter paper to rewet it; and a detection mechanism for detecting the moisture content of the filter paper, located on the frame and between the last two sets of rollers in the filter paper conveying direction, the detection mechanism including an online NIR moisture analyzer that performs non-contact moisture detection on the filter paper from above. By using steam rewetting instead of ultrasonic spraying, the steam particles are small and uniform, allowing for rapid penetration into the cured filter paper, overcoming the problems of large atomized particles and poor penetration, ensuring uniform filter paper humidity, and providing a good performance foundation for subsequent winding and other processes.

A method for rewetting a paper web (4) is provided, in which the web (4) is guided through a device (2), the device (2) having a processing unit (10) with which the web (4) is processed, the device (2) having a drying unit (12) for drying the web (4) downstream of the processing unit (10), the device (2) having a plurality of humidifying units (18, 20) downstream of the drying unit (12), pre-wetting the web (4) using a first humidifying unit (18) of the plurality of humidifying units, and post-wetting the web (4) using a second humidifying unit (20) of the plurality of humidifying units after a minimum residence time (T), thereby performing multiple-stage rewetting of the web (4) with a wetting agent using the plurality of humidifying units (18, 20), the minimum residence time (T) being selected such that the web (4) in the second humidifying unit (20) has an increased absorption rate of the wetting agent based on the pre-wetting. Furthermore, a device (2) for processing a paper web (4) is provided.

The utility model relates to the technical field of paper machines, and discloses a spraying device for producing biological antibacterial single-layer paper, which is characterized in that the front side and the rear side of the right end of the inner wall of a water tank are fixedly connected with rotating columns, the outer walls of the two rotating columns are rotatably connected with a placing net, and the rear side of the inner wall of the water tank is fixedly connected with a water pump; the output end of the water pump communicates with a water pipe, fixing frames are fixedly connected to the front end and the rear end of the right side of the outer wall of the water tank correspondingly, a plurality of water storage blocks are fixedly connected to the tops of the two fixing frames correspondingly, the water storage blocks communicate with the water pipe, and atomizing nozzles are fixedly connected to the adjacent sides of the water storage blocks correspondingly. According to the utility model, paper pulp can be effectively soaked through the placing net in the water tank, and the water pump on the rear side of the inner wall of the water tank is communicated with the water pipe, so that continuous and stable water source supply of the atomizing nozzle is ensured, and the requirement on paper pulp humidity regulation in the production process of biological antibacterial single-layer paper is met.

A kind of paper pulp molding automated production system, including molding machine body, conveying system, feeding mechanism, drying system, humidification system and hot-pressing system;The molding machine body is close to the input end of the conveying system, the feeding mechanism is located between conveying system and molding machine body, and the feeding mechanism is used to grab paper tray on molding machine body to the conveying part of conveying system;The drying system, the humidity acquisition device, the humidification system and the hot-pressing system are sequentially arranged on conveying system from the feed end to the discharge end of the conveying system.The overall structure is simple, and through the automatic conveying, drying, humidification, hot-pressing system, and image recognition and sorting device, each link is automatically processed to improve production efficiency.

A process for the production or treatment of a fibrous web, in particular a paper or cardboard web, includes the following steps: a. drying of the fibrous web in a dryer section; b. subsequent cooling of at least one first side of the fibrous web by way of convection cooling, whereby the fibrous web has a temperature of 65° C. or less on at least the first side after cooling, in particular 50° C. and less; c. apply steam to at least the first side of the fibrous web, in particular the temperature on the first side after steam application is at least 70° C., optionally more than 80° C. or 90° C.; and d. treatment of the fibrous web in at least one calendering nip.

The invention provides a paperboard regional humidification method, and belongs to the technical field of corrugated paper product.The method comprises the steps that initial humidity distribution of a paperboard is obtained through near infrared spectrum full-breadth scanning, a dual-granularity partition matrix is established, humidity distribution characteristics are analyzed through a humidity optimization prediction model, and optimal ultrasonic frequency and power parameters are predicted; according to the target humidity requirement, a humidity change matrix is calculated to determine humidification area distribution, firstly, a gradient humidification mode is adopted to preprocess a coarse humidification area to provide sufficient surface moisture reserve, and then an ultrasonic-assisted fine humidification technology is utilized to promote moisture to deeply permeate into a core paper layer. Finally, uniform humidity distribution of the paperboard from the surface layer to the core layer is achieved, and the technical problem that moisture can only permeate into the surface of the paperboard and is difficult to permeate into the core paper layer uniformly, so that the humidity difference inside and outside the paperboard is obvious is solved.

The utility model provides water circulation environment-friendly packaging paper spraying equipment convenient to adjust, and relates to the technical field of spraying equipment, the water circulation environment-friendly packaging paper spraying equipment convenient to adjust comprises a machine body, a controller is arranged on one side of the machine body, a transmission roller is arranged on one side of the machine body, and a collecting box is arranged on one side of the machine body; a limiting device is arranged on the side, close to the transmission roller, of the machine body, a mistaken touch prevention device is arranged on one side of the controller, the limiting device comprises a round hole plate, the round hole plate is fixedly connected with the machine body, a motor is fixedly connected to one side of the round hole plate, and a winding rod is fixedly connected to the output end of the motor; by arranging the limiting device, corrugated boards in the conveying process can be intercepted and limited, the effect of guiding the corrugated boards in the conveying process is achieved, the situation that the corrugated boards cannot be normally conveyed by the transmission rollers due to position deviation of the corrugated boards in the conveying process is reduced, and the conveying efficiency is improved. And the conveying and processing efficiency of the corrugated paper is improved.

According to the paper wetting roller, a roller surface is made of rubber, needle holes which are uniformly and densely distributed are integrally formed in the roller surface, the hole opening diameter of each needle hole is 0.3-1.5 mm, the hole bottom diameter of each needle hole is 0.1-1.0 mm, the depth of each needle hole is 0.1-1.0 mm, and the center distance between each needle hole and the nearest adjacent needle hole is 0.4-1.2 mm. Compared with an existing paper wetting roller, the paper wetting roller can more evenly coat the liquid medium on the surface of paper in a rolling mode. The knurling mechanism provided by the utility model adopts the paper wetting roller, so that the moisture of the toilet paper can be properly increased.

The invention relates to a movable wetting device and wetting method for an insulating cardboard, the movable wetting device comprises a walking support and a spraying cantilever, the walking support is provided with a cantilever adjusting mechanism capable of moving and adjusting, and the cantilever adjusting mechanism is provided with a lifting sliding seat capable of adjusting the height; a spraying cantilever perpendicular to the length direction of the walking support is arranged on the lifting sliding base. The spraying cantilever is provided with a spraying assembly, the spraying assembly comprises a plurality of groups of spraying nozzles and a plurality of grouped flow valves, and each group of spraying nozzles respectively control the spraying flow through the corresponding grouped flow valves; a water tank for supplying water to the spraying assembly is arranged at one end of the walking bracket; a paperboard positioning assembly is arranged on one side of the walking support, and a transformer paperboard to be wetted is positioned through the paperboard positioning assembly after being input. Automatic wetting operation of the transformer paperboard can be achieved, it can be guaranteed that the paperboard is wetted evenly, and the wetting amount is accurately controlled.

The invention relates to a method and a corresponding device for producing or treating a fibrous web, in particular a paper or cardboard web, having the following steps: a) drying the fibrous web in a drying section, b) subsequently cooling at least one first side of the fibrous web by means of a convection cooling process, wherein the fibrous web has a temperature of 65 °C or less, in particular 50 °C or less, on at least the first side after the cooling process, c) applying steam onto at least the first side of the fibrous web, the temperature on the first side equaling at least 70 °C, preferably more than 80 °C or 90 °C, after the steam is applied, and d) treating the fibrous web in at least one calendering nip.