87results about "Doctors" patented technology

Creped fibrous structures having pillows and knuckles, wherein the creped fibrous structures may exhibit improved knuckle properties, such as Knuckle Roughness Ra, Knuckle Roughness Rq, and Knuckle Creping Frequency and methods for making same are provided, and / or may comprise elongate knuckles comprising discrete pillows and / or elongate pillows between first and second elongate knuckles.

The invention is applicable to the technical field of air scrapers, and provides a rotary bottom support air scraper and a control system, the rotary bottom support air scraper comprises racks, a scraper body, a sealing frame assembly and a groove body, the racks are mounted at two ends of the scraper body, the racks at the two ends are in a mirror image relationship, the sealing frame assembly is mounted on the racks at the two ends, and shaft heads at the two ends of the scraper body are provided with sliding bearing seats and handles. According to the scheme, the sliding bearing seat and the handle are installed on the shaft heads at the two ends of the scraper body, the handle and the scraper body synchronously rotate through the spline, a traditional suspension support design is abandoned, the position of the scraper body can be directly adjusted through the handle during overhauling, and a fixing structure does not need to be detached; the blade is fixed on the scraper body through the screw, so that the blade is convenient to disassemble and assemble when being replaced, the shutdown maintenance time is greatly reduced, and the labor intensity of maintenance personnel is reduced; the axial sealing piece on the groove body is fixed through the pressing plate, and one end of the axial sealing piece is in close contact with the bottom of the scraper body; double sealing can prevent slurry from entering equipment gaps.

A doctor (20), in particular for printing cylinders and coating systems, includes a doctor edge (21), a doctor body (22), and a curved blade profile (25) which is formed between the doctor edge (21) and the doctor body (22). In order to produce a doctor (20) which reduces the maintenance requirements of a gravure, flexographic, offset and / or digital printing machine and increases the service life of a doctor (20), according to the invention the extension of the curved blade profile (25) from the doctor edge (21) to the doctor body (22) is square or cuboid and / or the extension of the curved blade profile (25) from the doctor edge (21) to the doctor body (22) has at least one turning point (26).

A metering rod holder assembly for supporting a metering rod in compressive engagement with a surface from which a fluid is to be metered. The rod holder assembly includes a base member having a channel opening to a first face thereof, and a rod bed insert at least partially received in the channel of the base member in spaced relation to a base wall of the channel. The rod bed insert includes a metering rod slot for receiving a metering rod, and a flank engaging surface engaged with at least one flank surface of the base member, the rod bed insert movable from a first position to a second position within the channel.

A plurality of studs mount a doctor blade holder to a doctor back in a fiber web machine for slidable extraction of the doctor blade holder in the cross machine direction. Each stud (15) has a body (16) with a cylindrical center segment with a protruding nonround flange (17) formed as a single piece with the center segment. Opposed flats of the nonround flange of the body (16) may be engaged by the opposed parallel jaws of a conventional wrench allowing ready attachment of the studs to the doctor blade holder and subsequent installing within the channel of a rail which is mounted to the doctor back. A slide bar may be fixed to the doctor blade holder to extend out of the rail for engagement and extraction of the doctor blade holder.

The utility model discloses a papermaking drying cylinder roller scraper protection assembly adaptive to a papermaking process, which belongs to the technical field of papermaking equipment, and is characterized by comprising a base, two sides of the top of the base are fixedly connected with racks, and the tops of the two racks are rotatably connected with a drying cylinder body through bearing seats; a scraper body is arranged on the front side of the bottom of the drying cylinder body, a protection adjusting assembly is arranged at the bottom of the scraper body, and an installation fixing assembly used in cooperation with the scraper body is arranged at the top of the protection adjusting assembly. The problems that after long-time use, a drying cylinder is in a high-speed rotating state, fixed contact force is prone to damaging a scraper, so that the production cost is increased, the downtime is prolonged, an existing scraper mounting and fixing mode is troublesome, the scraper is inconvenient to disassemble, maintain or replace in the later period, and inconvenience is brought to a user are solved.

An apparatus and method for installing or replacing a blade holder assembly in a web forming and processing machine, such as a machine for use in papermaking, paperboard, tissue, printing, and sheet metal applications, is provided. The present invention addresses the limitations of existing blade holder assemblies, particularly premature failure of traditional loading / unloading elements in high temperature environments. The novel blade holder assembly is integrated with a high-temperature-resistant element, and compared with a traditional design, the service life is remarkably prolonged by 5-10 times. The design of the assembly facilitates installation, allows replacement with a small range of disassembly of the machine, thereby reducing downtime and related costs. The invention also provides for enhanced structural integrity and reliability, making it a robust solution to environments that are crucial for high temperature resistance and rapid maintenance. This method ensures improved performance, life and cost effectiveness in maintaining the blade holder assembly within an industrial machine.

The utility model discloses a scraper which comprises a scraper body provided with an air flow channel, an air inlet assembly arranged on the scraper body and communicated with one end of the air flow channel, and a hole blocking assembly arranged on the scraper body and connected with the other end of the air flow channel in a sealing mode, a plurality of air injection holes are further formed in the scraper body, and one ends of the air injection holes are communicated with the air flow channel. An air outlet is formed in the other end of the air spraying hole and is formed in the side surface of the knife body. The device has the advantages that the air flow channel and the air injection holes are formed in the scraper, and compressed air is injected to the area between the compression roller and the scraper through the air injection holes when the roller surface of the compression roller is scraped away by the scraper, so that the pressure intensity of the area between the compression roller and the scraper is lower than the pressure intensity in the blind holes corresponding to the area, and water stains in the blind holes are sucked out; in the whole process, the surface of the compression roller is not impacted, the service life of the compression roller is prolonged, water spots can be rapidly sucked out of the blind holes, it is guaranteed that the roller surface is dry when paper is pressed in the follow-up process, and the paper effect is guaranteed.

The invention relates to a web stabilizer (1) for a machine for producing webs, and is characterized in that the web (3) is sealed at the end side by means of a sealing element (6) or by means of a further sealing element (8) that can be moved relative to the web (3). The invention allows an advantageous and particularly energy-saving negative pressure design to be achieved in the field of use of the web stabilizer (1).

The utility model discloses a high-abrasion-resistance Z-shaped scraper, and belongs to the technical field of toilet paper processing. A high-abrasion-resistance Z-shaped scraper comprises a paper breaking scraper body, feed baffles are arranged on the two sides of the paper breaking scraper body and connected with the paper breaking scraper body in an attached mode, Z-shaped scraper teeth are arranged on one side of the paper breaking scraper body, positioning sealing holes are formed in the outer surfaces of the feed baffles, and the positioning sealing holes penetrate through the interior of the paper breaking scraper body. In order to solve the problems that when an existing paper breaking scraper conducts section punching on a paper sheet, the hole site distance cannot be accurately adjusted, and the paper sheet is prone to being directly broken, the feeding depth of the paper breaking scraper is limited and controlled through a feeding baffle, and the Z-shaped cutter tooth area is limited through the thickness of a wedge head; the situation that the Z-shaped cutter teeth exceed the opening depth of the Z-shaped cutter teeth when making contact with the paper sheet, and consequently paper sheet hole positions are torn is avoided.

To provide a UV ink jet receptive primer that can be applied on a corrugated board manufacturing device.SOLUTION: A UV ink jet receptive primer is applied by a corrugated board manufacturing device to produce a UV ink jet printable, continuous folded, corrugated material (e.g. fan fold). Priming is performed in-line by the corrugated board manufacturing device. The primer withstands the heat, humidity, and abrasion of the corrugated board manufacturing device, yielding a surface that can be printed with UV inkjet ink and resulting in a high quality image.SELECTED DRAWING: Figure 1

The utility model discloses an edge water spraying structure of a drying cylinder. The edge water spraying structure comprises the drying cylinder, a drying cylinder scraper, a spraying rod, a chemical medicine baffle and a chemical medicine spraying pipe, the chemical medicine spraying pipe is placed below the drying cylinder in parallel, the chemical medicine baffle is located below the drying cylinder in parallel and is not connected with the drying cylinder, the spraying rods are fixed to the two ends of the chemical medicine baffle through spraying rod bases, and the spraying rods are perpendicular to the drying cylinder; by adjusting the position of the spraying rod, the newly designed position is superior, the operation condition of the nozzle can be observed in a contact manner at the channel, the position adjustment is convenient and safe, the nozzle can be cleaned on line, the phenomena that yellow edges are accumulated due to the blockage of the nozzle, and raw paper is broken are avoided, and the purposes of being safer, more convenient and more practical are achieved.

The invention discloses a production process of a high-thickness and low-gram-weight paper product and paper for daily use, and relates to the technical field of papermaking. The process comprises the following steps: mixing hardwood pulp and softwood pulp according to the proportions of 70%-80% and 20%-30%, and performing swelling treatment, wherein the concentration is controlled to be 2.0%-3.0%, the temperature is controlled to be 40-55 DEG C, the time is 30-60 minutes, and the pH value is controlled to be 7.0-8.0; grinding to enable the brooming rate to reach 45%-60% and the beating degree to be 32-40 degrees SR; dehydrating and forming through a 60-80-mesh forming net at the speed of 0.8-1.2 m / s; a 15-25 kN / m linear pressure carrier roller is adopted for squeezing, and the medium-high value is controlled to range from 0.3 mm to 0.8 mm; the wrinkling ratio is controlled to be 75%-80%, and frequency conversion control, water circulation or steam heat preservation and energy conservation measures are matched. The gram weight of the prepared household paper is 9-15.5 g / m, the thickness is increased by more than or equal to 20%, the household paper has the characteristics of light weight, fluffiness and softness, the production energy consumption is reduced by more than 10%, and the household paper is suitable for green and efficient manufacturing of high-end household paper.

The utility model discloses a device for detecting linear pressure between a drying cylinder and a scraper, and belongs to a pressure detection device. The device comprises a pressure sensor, a sensor fixing disc, a control rod, a control and display device and a power supply connecting device, the pressure sensor is installed on the sensor fixing disc, and the control rod is connected with the sensor fixing disc and used for controlling movement of the sensor fixing disc. The pressure sensor is electrically connected with the control and display device, and the control and display device is electrically connected with the power supply connecting device. The device can perform line pressure detection in a narrow space of 1.5-3cm, the pressure sensor is fixed on the control sensor fixing disc, and the diameter of the control sensor fixing disc is 5-8 times that of the pressure sensor, so that the local pressure bearing of the scraper is reduced, the influence of local deformation of the scraper on measurement and the deformation of a back knife during detection is avoided, and the detection accuracy is improved. And the pressure sensor is digitally displayed in combination with the control and display device, so that portable mobile measurement is realized.

The embodiment of the present application provides a kind of preparation method of high air permeability bamboo pulp lining paper, comprising: S1: fiber raw material is scattered pulp to form first pulp, and the concentration of scattered pulp is 4-6%, and the proportion of bamboo pulp fiber in fiber raw material is greater than or equal to 95%, and the average length of the bamboo pulp fiber is greater than or equal to 1.6mm, and the content of small component in bamboo pulp fiber is less than or equal to 1%, and the proportion of bamboo pulp fiber with length of 1-1.5mm is 6-15%, and then it is ground, formed, dried and wrinkled to form high air permeability bamboo pulp lining paper, so that the high air permeability bamboo pulp lining paper formed by the above method has high strength and high air permeability, and the air permeability is improved by more than 17% compared with the prior art.

The utility model relates to the technical field of scraper adjustment, and discloses a scraper adjusting mechanism which comprises a main frame, an extrusion assembly is installed on the inner wall of the main frame and used for extruding paper, a cleaning assembly is installed on the inner wall of the main frame and used for cleaning water and paper pulp on the extrusion assembly, and the cleaning assembly comprises a connecting frame. The connecting frame is rotatably mounted on the inner wall of the main frame, a mounting frame is fixedly connected to the side wall of the connecting frame, and a two-way threaded rod is rotatably connected to the top of the mounting frame; according to the scraper adjusting mechanism, by means of threaded connection between the two-way threaded rod and the sliding plate, when the two-way threaded rod rotates, the distance between the roller scraping knife and the lower pressing roller is adjusted, water stains and paper pulp on the side wall of the lower pressing roller can be conveniently cleaned through the roller scraping knife when the lower pressing roller rotates, and when too much paper pulp is attached to the side wall of the roller scraping knife, the connecting frame can be rotated; and the roller scraping knife at the bottom of the connecting frame rotates to the position below the lower pressing roller, and the lower pressing roller continues to be cleaned.

The invention relates to the technical field of papermaking processes, in particular to a production process of living paper. The production process provided by the invention comprises the following steps: taking needle leaf pulp and broad leaf pulp as raw materials, then preparing the pulp according to a certain proportion, then introducing a bulk improver, a wet strength agent and a softening agent, and carrying out molding and squeezing to obtain wet paper; and drying the wet paper, and then wrinkling to obtain the life paper. Wherein in the repulping process, the pulping process is optimized, the fiber form is changed, the damage to the fiber structure is reduced, and the bulkiness of the fiber is improved; a specific additive is adopted for compounding before papermaking, so that the bulk of the paper is greatly improved under the condition of small investment; and a certain wrinkling cutter angle is controlled in the wrinkling process, so that the bulkiness can be improved. Through control in the multiple aspects in the process, the bulk of the paper is effectively improved, and meanwhile, the paper has good strength, water absorption and softness.

The utility model discloses a T-shaped wrinkling scraper, and belongs to the technical field of toilet paper processing. A T-shaped wrinkling scraper comprises a wrinkling scraper body, an inclined face groove is formed in one end of the wrinkling scraper body, a T-shaped transverse knife is arranged above the inclined face groove, the T-shaped transverse knife and the wrinkling scraper body are of an integrated structure, and scraper inserting grooves are formed in the two sides of the other end of the wrinkling scraper body. In order to solve the problems that in the using process of an existing wrinkling scraper, the thickness of a gap between a scraper head and a paper sheet cannot be accurately controlled, the paper sheet can be extruded and broken, and the surface of a drying cylinder can be abraded, a paper combining scraper head is in attached contact with the paper sheet through a resistance ball head; the contact area between the resistance ball head and the paper sheet is small, no obvious indentation is left on the surface of the paper sheet, meanwhile, the resistance ball head with the frosted surface can prevent the condition that the cutter head slips when making contact with the paper sheet, and it is guaranteed that the paper sheet can achieve the good wrinkling effect.

The invention relates to a blade, in particular a scraper blade or sealing blade for contacting a running surface in a paper machine, the blade having a cutting edge side that contacts the running surface and a retaining side that faces away from the running surface and having a length L that extends in the width direction of the paper machine when the blade is used as intended, the blade includes a first polymeric component providing a cutting edge side of the blade and a second polymeric component providing a retention side. In addition, the invention also relates to a manufacturing method of the blade.

The utility model provides a vacuum suction moving roller water receiving device, which relates to the technical field of pulping and papermaking and comprises a support, a water receiving box and a suction moving roller. The whole support is a vertical rectangle, and a base is fixedly installed at the bottom of the support. The water receiving box is mounted on one side of the bracket; and the sucking and moving roller is rotationally connected above the base of the bracket. The problems that the operation speed of a paper machine is high, a large amount of water mist is formed in the inner ring of a pressing part, meanwhile, water throwing is serious due to the fact that white water removed in the wet paper web transferring process of a vacuum suction moving roller cannot be rapidly removed, coarse cotton cloth rewetting is caused, and therefore the pressing dewatering efficiency is affected, and the paper breaking risk is increased are solved.

The utility model provides a fiber reinforced plastic (FRP) scraper assembly for a paper machine, which particularly relates to the field of paper machines and comprises an FRP scraper and a fixing plate. Blades are arranged at the two ends of the FRP scraping plate, and the lower side of the FRP scraping plate is movably connected with the fixing plate. And a limiting device is arranged at the end part of the FRP scraping plate on the fixing plate. The limiting device comprises a limiting groove and a connecting plate. The connecting plate is connected with the end of the limiting groove and the side of the fixing plate. The cutting edge of the FRP scraper blade is embedded into the limiting groove, and the cutting edge of the FRP scraper blade and the limiting groove are matched with each other. According to the utility model, the replacement cost can be reduced, and the fixation is firm.

The utility model relates to a paper lint cleaning and collecting tool for a scraper of a drying part. The technical problem that paper surface quality is affected due to the fact that waste is accumulated on an existing drying cylinder scraper is solved. Comprising a drying cylinder, a scraper frame is arranged on one side of the drying cylinder, a drying cylinder scraper extending towards the drying cylinder is arranged on the scraper frame, a mounting barrel extending axially is arranged on the scraper frame, a barrel limiting structure capable of limiting the mounting barrel is arranged on the scraper frame, and a suction head extending towards one side of the drying cylinder scraper is arranged at one end of the mounting barrel. A notch for axially and movably arranging the suction head is formed in the cylinder body limiting structure; and a dust collection structure is arranged at the other end of the mounting cylinder body. The device has the advantages that the mounting barrel can be radially limited through the barrel limiting structure, and the axial movement stability of the mounting barrel on the scraper frame is guaranteed. The dust collection structure can collect dust at the suction head through the dust collection space, the dust collection effect is guaranteed, a user can axially control the mounting barrel conveniently through the dust collection pipe connecting assembly, and the dust collection range is widened.

The invention discloses an adjustable water scraping plate assembly applied to a papermaking dehydration process, relates to the technical field of papermaking dehydration processes, and aims at improving the collaborative balance problem of heat exchange efficiency and paper integrity in the papermaking dehydration process. A gas outlet plate and a floating ball-balancing weight linkage liquid discharging mechanism are arranged in a mounting gas box, data such as temperature, tension and transmission speed are collected through a parameter detection stage, and then a temperature exchange balance formula and a global collaborative model are established through a multi-section adjusting stage. The vertical stroke, the rotating angle, the paper conveying speed and the gas injection parameter of the water scraping plate are dynamically adjusted based on the balance limit coefficient, the precise cooperation process of the dewatering efficiency and the paper integrity is specifically formed, the dewatering efficiency is maximized on the premise that the paper conveying continuity and the structure integrity are guaranteed, different production working conditions are adapted, and the production efficiency is improved. And the stability and the intelligent level of a papermaking dehydration process are improved.

The present disclosure relates to techniques for tracking data associated with a creping process. The techniques include measuring process data, where the process data includes vibration data, and where measuring process data includes measuring vibration data of a creping blade using one or more vibration sensors. The techniques also include assigning a score to the process data, including assigning a vibration score to the vibration data. The techniques also include generating an index score based on the score of the process data and the vibration score of the vibration data.

The invention relates to a crêping doctor and to a production method for a crêping doctor, which crêping doctor comprises a blade-shaped main body which is made of metal, in particular of steel or stainless steel, and which has a running surface that can be placed against the drying cylinder, and an end face which is at least partially covered with an anti-abrasion layer which provides the impact area for the fibrous web, the impact area having a plateau and a number of notches, characterized in that the surface roughness Ra1 of the plateau and the surface roughness Ra2 in the notches differ from one another.

The invention relates to a paper making system comprising a plurality of guide rollers including a first guide roller, a carrier forming a continuous surface contacting the plurality of guide rollers, the carrier having a paper side and a back side and being configured to travel in a first direction around the plurality of guide rollers during a paper making process, a paper stock source configured to provide a paper stock to the paper side of the carrier, a cleaning blade arranged to clean the first guide roller, a vibration sensor configured to detect vibration of the cleaning blade, and a controller in communication with the vibration sensor and configured to receive vibration data from the vibration sensor, analyze the received vibration data, and if the vibration data satisfies a predetermined condition, initiate a corrective action. Moreover, the invention relates to a method for addressing the problem of deposits in a paper making system.

To provide tissue paper excellent in softness.SOLUTION: In tissue paper containing a softener, a dry tensile strength in the longitudinal direction is 200 cN / 25 mm or more and 400 cN / 25 mm or less, and the degree of elongation in the longitudinal direction is 5% or more and 25%, and a tensile stress in the longitudinal direction in a proportional limit is 160 cN or more and 250 cN.SELECTED DRAWING: Figure 1

The invention relates to a component for a machine for producing and / or treating a fibrous web, said component comprising at least one layer consisting of a cross-linked silicon-free polymer which acts as a polymer matrix and which is covalently bonded to the polymer matrix in a polysiloxane structural unit ii). The at least one polysiloxane structural unit ii) has the following general formula (I):-(SiR1R2O-) n in which: R1 and R2 are the same or different independently of each other and are selected from hydrogen, C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkynyl, C3-C12 cycloalkyl and C5-C12 aryl, and R1 or R2 has at least one functional structural unit selected from the group consisting of hydrogen, C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkynyl, C3-C12 cycloalkyl, and C5-C12 aryl, and R1 or R2 has at least one functional structural unit selected from the group consisting of hydrogen, C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkynyl, C3-C12 cycloalkyl, and C5-C12 aryl. N is an integer of at least 3, and n is an integer of at least 1, and n is an integer of at least 1, and n is an integer of at least 1, and n is an integer of at least 1, and n is an integer of at least 1, and n is an integer of at least 1, and n is an integer of at least 1, or an integer of at least 1, or an integer of at least 1, or an integer of at least 1, or an integer of at least 2, or an integer of at least 1, or an integer of at least 2. The cross-linked polymer has a maximum surface energy of 40 mN / m.

The invention relates to a scraper with a rounded tail end. Compared with a traditional scraper, the scraper according to the invention has a smaller oscillation tendency and a remarkably shorter run-in period, so that the characteristics and functions of the scraper can be completely formed when the scraper is put into operation.