Abstract: The present invention relates to a doctor blade comprising: a body having a thickness, a sharp leading side, a trailing side, and working end comprising a bevel surface, wherein the bevel surface is defined by a leading edge and a trailing edge, and wherein the Ra of the bevel surface is from about 1 ?-in to about 7 ?-in.

Abstract: A system and method for transferring a continuously advancing paper web from a dryer to a reel section is provided. The system includes a first fabric defining a first moving conveyor. The first fabric may be a permeable fabric, which is positioned downstream from the dryer. A second fabric, which may also be permeable and defines a second moving conveyor, is also included. The first moving conveyor overlaps the second moving conveyor for a predetermined distance, and the first and second moving conveyors are configured to receive the paper web between the conveyors. A vacuum device is rotatably disposed against the first moving conveyor, and the dryer and the vacuum device are disposed relative to each other to form an open draw. The vacuum device is configured to produce a vacuum to attract the web to the first fabric for transferring the advancing web into the predetermined distance where the first and second conveyors overlap.

Abstract: Doctor blades are provided for multiple positions within a paper or board making machine. A single doctor blade of a standard length or a reel of doctor blade material has markings which permit a variety of doctor blade sizes to be readily cut. If a standard length doctor blade is used, the length of the blade is chosen to be at least as long as the longest doctor blade required for a particular papermaking machine. If the material is in a reel, the markings may be at regular numbered intervals. If a pattern of rivets is connected to the blade, and the rivets must have a given relationship with a blade holder, blade length may be marked out in such a way that some blade material is discarded in order to position the rivets when shorter blades are cut from the blade reel.

Abstract: A doctor blade holder comprises upper and lower mutually spaced jaw components defining a slot. A doctor blade is removably retained in the slot, and nozzles in one of the jaw components are arranged to direct fluid under pressure into the slot for application to the doctor blade.

Abstract: A device for the detachable fixing of a holder for a doctor blade located in a paper production plant, it being possible for the doctor blade, which is assigned to a supporting or guiding roll for the wire, for the felt or for the paper web, to be set in its position with respect to the supporting or guiding roll by way of an actuating device and, furthermore, it being possible for the holder for the doctor blade to be displaced on a support for the holder by way of a guide at least approximately in the axial direction of the supporting or guiding roll and fixed on the support in the operating position. A pressure hose is disposed between the holder for the doctor blade and the support. The pressure hose allows the holder for the doctor blade to be clamped to the support.

Abstract: A blade for creping has been described. The blade according to the invention has a ceramic top layer covering the working edge of the blade, as well as the surface upon which the web impacts during creping. The ceramic top layer is a ceramic composition having a content of chromia. Preferably, the ceramic composition of the top layer comprises chromia-titania, with a titania content of up to 25% by weight, and preferably between 10% and 15% titania.

Abstract: The invention relates to treatment equipment, including a beam, for a paper machine. The beam (12) is equipped with a shaft (15), which has a bearing assembly (16) adapted to allow the beam (12) to pivot in relation to the bearing assembly (16) as well as move in the axial direction. The treatment equipment (10) further comprises a support device (18) and an oscillator (17). The support device (18) comprises a swing arm (19) and an actuator (20) connected thereto. In connection with the bearing assembly (16) there is an auxiliary arm (21), which is adapted free in the radial direction and locked in the axial direction in relation to the bearing assembly (16). In addition, there is a connection (22) between the swing arm (19) and the auxiliary arm (21), allowing the swing arm (19) to move in the axial direction in relation to the auxiliary arm (21) without a radial distortion of the swing arm (19). The invention also relates to similar treatment equipment without an actuator.

Abstract: In a doctor blade, which suppresses abrasion of a mating member and excels in water removal capability and shape retention capacity over a long time, resin is impregnated into a fibrous laminate composed of base materials and batt layers integrated by needle punching, and an adjustment is made so that the void content is between 50% and 80%.

Abstract: A doctor unit in a paper machine includes a blade carrier having a blade holder fitted to the blade carrier. A doctor blade is mountable in the blade holder to doctor a roll or similar moving surface. The blade holder and/or doctor blade include one or more sensors installed inside the construction or on its surface. The sensors are arranged to measure the wear of and/or stress in the blade holder and/or doctor blade.

Abstract: A tissue paper crimper of greater rigidity is provided by mounting crimper disks to linear bearings which in turn are mounted to a carriage which can be positioned in the cross machine direction on a frame. The crimper disks are pressed against anvil roll pneumatic actuators. The use of linear bearings allows the crimper to run at higher operating speeds. An air knife is positioned so that a jet of air following a Coanda surface periodically blows against the rotating crimping wheel and thereby removes fibers before they build up. Buildup of fibers on the crimping wheels from the tissue webs being crimped can cause the wheels to become unbalanced, resulting in undesirable vibration. The rigid mounting and the prevention of fiber buildup will allow the crimper of this invention to operate at higher machine speeds.

Abstract: A method for target application of a Performance Enhancing Material to a creping cylinder in order to improve a tissue making operation is described and claimed. The method involves dividing the creping cylinder into Zones and then applying the desired Performance Enhancing Material on a Zone by Zone basis such that each Zone has the optimal Performance Enhancing Material present. Furthermore, a method to ascertain the amount and pattern of application of the Performance Enhancing Material used on the creping cylinder is described and claimed. This method involves adding an inert fluorescent tracer to said Performance Enhancing Material and then to use a fluorometer to look for the tracer on the creping cylinder, and/or on the creped tissue product and/or in the water removed from the felt.

Abstract: An arrangement for doctoring a belt or a soft roll surfacing in a paper or board machine includes a doctor set in connection with a surface with a doctor blade fitted in it for doctoring the surface. The doctor blade is at least partly of a material, the hardness of which is essentially equal to or less than the hardness of the material of the surface, in order to prevent the doctor blade from cutting into the surface. The material is arranged to form a layer extending over the entire width of the doctor blade, and the thickness of which throughout is at least half of the thickness of the doctor blade. A support construction is arranged in the doctor blade, which together with the layer is arranged to form the doctor blade.

Abstract: Equipment and a method for changing a blade which is intended to be placed in a blade holder (10) and which is preferably arranged as a flexible band (16). The equipment has reels (14, 15) for keeping the band (16) reeled and transfer devices (18) for moving the band (16) in the blade holder (10) between the reels (14, 15). The equipment includes guide devices (17) for guiding the band (16) from a reel (14, 15) to the blade holder (10) and vice versa. The guide devices (17) are arranged to turn the band (16) longitudinally to be essentially parallel to the blade holder (10). The closest guide member (20) of the guide members (20, 20?) belonging to the guide devices (17) is rotated to a position that essentially corresponds to the position of the blade holder (10) turned to the blade-changing position.

Abstract: The present invention is directed to a machine and process for producing a tissue web. The machine includes a forming area including at least one rotating continuous dewatering wire with zonally varied wire permeability, and at least one shoe press. The process includes dewatering the tissue web with at least the at least one continuous dewatering wire with zonally varied wire permeability, and pressing the tissue web in the at least one shoe press.

Abstract: A system and method for transferring a continuously advancing paper web from a dryer to a reel section is provided. The system includes a first fabric defining a first moving conveyor. The first fabric may be a permeable fabric, which is positioned downstream from the dryer. A second fabric, which may also be permeable and defines a second moving conveyor, is also included. The first moving conveyor overlaps the second moving conveyor for a predetermined distance, and the first and second moving conveyors are configured to receive the paper web between the conveyors. A vacuum device is rotatably disposed against the first moving conveyor, and the dryer and the vacuum device are disposed relative to each other to form an open draw. The vacuum device is configured to produce a vacuum to attract the web to the first fabric for transferring the advancing web into the predetermined distance where the first and second conveyors overlap.

Abstract: In laminated, resin-impregnated doctor blades for removing water from a grooved belt in the press part of a papermaking machine, fibers of the belt-contacting layer are oriented in the direction of travel of the belt. The doctor blade so constructed exhibits greater adhesion to the belt, an improved water-removal capability, and greater durability, when compared with a doctor blade having randomly oriented surface fibers.

Abstract: A doctor blade for removing water, which excels in water removal capability and shape retention capacity, and suppresses abrasion of the belt or other mating member with which it cooperates, is a fibrous laminate comprising integrated base material and batt fiber layers. By impregnating resin into one side of the fibrous laminate, a layer in which the amount of impregnated resin is large and a layer in which the amount of impregnated resin is small are provided. In use, the layer in which the amount of resin is small is in contact with a belt or other mating member. The doctor blades can be adapted to the mating member easily, and excel in the water removal capability and shape retention, and suppress abrasion of the mating member.

Abstract: Doctor blade dosing systems for devices used for coating material webs, particularly paper or paperboard webs, exist that have a doctor blade rod, which serves as a dosing element while being held inside a slot of a doctor blade bed that, in turn, is mounted in a support that can be fastened inside the frame of the system. According to the disclosure, the doctor blade rod has a diameter of less than 25 mm. The doctor blade bed is inserted in removable manner into a slot of the support situated on the face thereof. The ratio of the cross-sectional area (measured in mm2) of the doctor blade to the diameter (measured in mm) of the doctor blade rod is less than 60 mm, preferably less than 30 mm. The support is made of a plastic material and is shaped like a clamp having at least one rearward extending clamp limb and one joint location, whereby the holding slot that accommodates the doctor blade bed forms the clamp mouth.

Abstract: A Yankee cylinder or the like at the dry end of a paper machine has at least a drying cylinder, a hood covering the drying cylinder, a web guiding means, and a roller. After the drying cylinder at the dry end of the machine, seen in the machine direction, a covered area which above and on the sides is at least mainly covered extends at least to the area of the roller.

Abstract: A multiplayer composite doctor blade has a side edge configured for application to the surface of a rotating roll in a paper making machine. The doctor blade has an inner core and intermediate layers preferably enclosed by outer layers. The inner core is predominantly polymeric material. The intermediate layers on opposite sides of the core include reinforcing fibers. The side edge of the doctor blade has an abrasiveness as measured by ASTM test method D5181-91 of between about 4.0 to 5.0.

Abstract: The equipment for the production of a paper web material comprises: a first former (1) for forming a first layer (S1) consisting of a slurry containing fibers and water; a second former (2) for forming a second layer (S2) consisting of a slurry containing fibers and water; a third former (3) for forming a third layer (S3) consisting of a slurry containing fibers and water; and a creping device (50A, 50B) for wet creping of the third layer.

Abstract: The invention relates to a doctor or coater blade (1) of steel, having a nickel coating comprising abrasion resistant particles, said coating being constituted by an electrolytic nickel layer comprising abrasion resistant particles. The coating preferably comprises at least two electrolytic nickel layers having different composition, and may be formed differently in different sections of the blade. The invention also relates to a continuous process for electrolytic nickel coating in at least one electrolytic cell holding an electrolyte liquid comprising at least one nickel salt, and in at least one of these cells also comprising abrasion resistant particles.

Abstract: An apparatus for measuring wear of a doctor blade includes measuring members placed around the doctor blade for measuring at least one dimension of the doctor blade. The measuring members are arranged to permit longitudinal movement of the doctor blade between the doctor blade and the measuring members. In addition, measurement sensors are connected to the measuring members to obtain a continuous measurement result when the doctor blade or the apparatus is moved. The invention also relates to a method in the measurement of wear of a doctor blade and in controlling a paper machine.

Abstract: A former for producing a tissue web and a process of making a tissue web using the former. The former includes a forming element, an inner dewatering belt, and an outer dewatering belt. The inner and outer belts converge to form a stock inlet nip. The inner and outer belts are guided over the forming element and thereafter separating from one another in the area of a separation point. At least one suction element is positioned adjacent the inner belt on a side which is opposite the outer belt. Alternatively, a conditioning device is positioned adjacent the outer belt. The process includes forming the tissue web in the area of the forming element, guiding the inner and outer belts around the forming element, and separating the inner and outer belts in the area of the separation point. Alternatively, the process includes conditioning the outer belt.

Abstract: A composite blade, in which there is an essentially plate-like blade component with a composite-construction and retention members arranged in its rear part is intended to be installed in a special blade holder with the retention members remaining in the throat of the blade holder. The retention members are formed of a profiling arranged as a lateral extension of the blade component. The profiling extends essentially over the entire length of the blade and is of the same piece as the blade component.

Abstract: A cradle for a spreading device, such as a rotatable rod, to which a spreading organ to be pressed against a movable surface has been attached. The cradle is fastened to a holder, and a gasket is provided between the cradle and the holder (9).

Abstract: An apparatus for doctoring a roll surface including a pivot bar adapted to be mounted on a doctor back and which the pivot bar defines an upwardly projecting fulcrum. A first shelf projects forwardly beyond the fulcrum and a top plate pivotally supported on and projecting forwardly beyond the fulcrum overlies the first shelf. The top platen is held downwardly against the fulcrum. Blade support members are carried by and cooperate with the top plate to define forwardly open slots, which slots are configured and dimensioned to receive a rear edge of a forwardly projecting doctor blade. The blade support members have rearwardly projecting second shelves underlying the first shelf and a loading mechanism is interposed between the first and second shelves for pivoting the top plate on the fulcrum in a direction urging the doctor blade against the roll surface.

Abstract: A blade (20) for wiping water from a sleeve (26) mounted on a press roll (14) in a paper making machine is adjustably mounted on the machine for movement toward and away from the sleeve (26). The wiper blade (20) is positionable against the surface of the sleeve (26) to wipe water therefrom adjacent and upstream from the nip between the sleeve (26) and a mating press roll (12).

Abstract: A doctor blade for use in cleaning a roll in a paper machine comprises a thermosetting plastic polymer material selected from the group consisting of vinylesterurethanes and polyether amides.

Abstract: A backing lath (6, 14) used for coating a web of paper or paperboard in doctor blade and rod coaters and film-transfer coaters, the backing lath featuring a fiber-reinforced composite material body. When necessary, the backing lath can be surfaced with a wear-resistant coating. The invention also concerns a doctor element assembly, wherein the backing lath has a fiber-reinforced composite material body.

Abstract: The invention relates to a method for monitoring the operation of a doctor assembly in a paper machine. In the method, the operation of the doctor assembly (16) is monitored. In case of a malfunction, the paper machine's (10) control devices (14-14′, 15) are used to carry out the necessary measures for eliminating the malfunction and carrying out repair and/or protective measures. In addition, detector devices (20) are arranged in connection with the doctor assembly (16), to detect a malfunction. The detector devices (20) are connected to the control devices (14-14′, 15) of the paper machine (10), in order to carry out the said measures automatically. The invention also relates to doctor assemblies in a paper machine for implementing the method.

Abstract: A blade holder for a doctor and method for using the doctor is disclosed, in which in the front part there is a throat or similar for the doctor blade of the doctor and which blade holder has loading members connected thereto to press the doctor blade against the surface to be doctored. The blade holder further includes a relatively stiff, slightly flexible frame plate, which incorporates the attachment flange. The blade holder also includes loading devices for directing the force of the loading members onto the frame plate at a distance from the attachment flange, to bend the frame plate and thus press the doctor blade against the surface to be doctored.

Abstract: A doctor for a suction roll in a paper machine is intended to remove water from a suction roll. The doctor includes a doctor slat fitted against the surface of suction roll extending essentially over the entire width of the suction roll, as well as the doctor slat holder and loading devices. In the direction of rotation of the suction roll, there is a doctor blade, with a blade holder fitted to the doctor after the doctor slat. The doctor blade is arranged to remove the water lifted off the suction roll by the doctor slat.

Abstract: A doctor blade device for machines for the coating of fibrous webs, in particular of paper or cardboard, and for keeping rotating rollers clean has a leaf-shaped doctor blade element (1) which is held by a holding means (2) and which, for a change, can be drawn out laterally on the holding means (2). The doctor blade element (1) is provided at least on one side with a grip part (8).

Abstract: A creping blade for creping a cellulosic web from a rotatable cylinder in a creping process includes first and second side faces. The first side face is at least substantially opposite to the second side file. The blade also includes an upper surface adjacent to the first and second side faces. A plurality of notches is provided along the upper surface. Each of the notches has a bottom portion and an open end defined by at least a portion of the upper surface. The notches are configured to increase the caliper of the cellulosic web when the creping blade crepes the cellulosic web from an outer surface of the rotatable cylinder. Creped paper and improved methods of manufacturing paper are also provided.

Abstract: The invention relates to an apparatus comprising a holder (2) for a doctor blade and a blade (1) to be fitted in the holder for use in a paper or board machine. The holder (2) and/or the blade (1) comprises a composite material of whose surface or on a part of whose surface a ceramic coating (6) has been made.

Abstract: A composite doctor blade is provided that is suitable for use in the manufacture of paper, particularly for use in calenders. The composite doctor blade includes multiple layers of composite material in which a substantial proportion of the fibers are aligned in a direction substantially parallel to the long axis of the doctor blade.

Abstract: A creping blade for creping a cellulosic web from a rotatable cylinder in a creping process includes first and second side faces. The first side face is at least substantially opposite to the second side file. The blade also includes an upper surface adjacent to the first and second side faces. A plurality of notches is provided along the upper surface. Each of the notches has a bottom portion and an open end defined by at least a portion of the upper surface. The notches are configured to increase the caliper of the cellulosic web when the creping blade crepes the cellulosic web from an outer surface of the rotatable cylinder. Creped paper and improved methods of manufacturing paper are also provided.

Abstract: Device for producing a paper having a three dimensional pattern which has been given the paper web in connection with drying the paper web. The device comprises at least one press nip (12) comprising a rotatable heated roll (13) and a counter means (11,14), at which either the heated roll (13) along its periphery alternatively a member surrounding the roll or a patterned wire, band or belt is provided with said three dimensional pattern, and wherein the wet paper web (10) is intended to pass through said press nip (12) and is given said pattern A detaching roll (16) is arranged at a certain distance from the press nip (12) for taking off the paper web from the heated roll (13), and creping means (17) are arranged for creping the paper from said detaching roll (16).

Abstract: A creping blade for creping a cellulosic web from a rotatable cylinder in a creping process includes first and second side faces. The first side face is at least substantially opposite to the second side face. The blade also includes an upper surface that is not orthogonal to at least one of the first and second side faces. Also included are a plurality of notches. Each of the notches has a bottom portion and an open end. The bottom portion is at least substantially parallel to the upper surface and the open end is defined by at least a portion of the upper surface. The notches are configured to increase the caliper of the cellulosic web when the creping blade crepes the cellulosic web from an outer surface of the rotatable cylinder. Also provided are systems and methods for creping a cellulosic web and creped paper.

Abstract: A composite composition to be used in a doctor blade construction, said composite laminate construction comprising: (a) one or more central layers comprising an engineering thermoplastic resin filled with heat-resistant, non-glass, long strand fibers; (b) one or more intermediate layers positioned over the one or more central layers, each said intermediate layer comprising a carbon layer; and (c) one or more surface sheets positioned over the one or more intermediate layers.

Abstract: A composite doctor blade comprises a steel support band configured with a width and thickness suitable for mounting in a blade holder, with tensile and yield strengths suitable for a selected doctoring application. A wear resistant strip of high speed steel is integrally joined to an edge of the support band. The wear resistant strip has tensile and yield strengths higher than those of the support band, and has a hardness of between about 55 to 75 Rc.

Abstract: The invention relates to a doctor apparatus (10) in connection with a roll (T) in a paper or board machine. The doctor apparatus (10) comprises a doctor beam (12) of lightweight construction and that the doctor beam (12) is arranged to pivot on bearing means (13a1, 13a2 . . . ) (pivot movement arrow L1). In connection with the doctor beam there are loading members (14a1, 14a2), a relative linear movement taking place between the loading members (14a1, 14a2) and backup surfaces (12′, 15a′) when the doctor beam (12) is being oscillated.

Abstract: An apparatus for doctoring a moving surface includes a blade holder component extending longitudinally across the moving surface and carrying a doctor blade. A support component is parallel to and supports the blade holder component. A first operating mechanism rotatably urges the doctor blade in a doctoring direction into contact with the moving surface, resulting in the doctor blade being acted upon by a reactionary thrust force in the plane of the doctor blade and a reactionary rotational force in a direction opposite to the doctoring direction. A pair of mutually opposed parallel guide rails are provided on one of the components, and rotatable rollers are spaced along the length of the other of the component.

Abstract: A creping blade for creping a cellulosic web from a rotatable cylinder in a creping process includes first and second side faces. The first side face is at least substantially opposite to the second side file. The blade also includes an upper surface adjacent to the first and second side faces. A plurality of notches is provided along the upper surface. Each of the notches has a bottom portion and an open end defined by at least a portion of the upper surface. The notches are configured to increase the caliper of the cellulosic web when the creping blade crepes the cellulosic web from an outer surface of the rotatable cylinder. Creped paper and improved methods of manufacturing paper are also provided.

Abstract: A doctor blade for removing water, which excels in water removal capability and shape retention capacity, and suppresses abrasion of the belt or other mating member with which it cooperates, is a fibrous laminate comprising integrated base material and batt fiber layers. By impregnating resin into one side of the fibrous laminate, a layer in which the amount of impregnated resin is large and a layer in which the amount of impregnated resin is small are provided. In use, the layer in which the amount of resin is small is in contact with a belt or other mating member. The doctor blades can be adapted to the mating member easily, and excel in the water removal capability and shape retention, and suppress abrasion of the mating member.

Abstract: In a doctor blade, which suppresses abrasion of a mating member and excels in water removal capability and shape retention capacity over a long time, resin is impregnated into a fibrous laminate composed of base materials and batt layers integrated by needle punching, and an adjustment is made so that the void content is between 50% and 80%.

Abstract: A creping blade for creping a cellulosic web from a rotatable cylinder in a creping process includes first and second side faces. The first side face is at least substantially opposite to the second side face. The blade also includes an upper surface that is not orthogonal to at least one of the first and second side faces. Also included are a plurality of notches. Each of the notches has a bottom portion and an open end. The bottom portion is at least substantially parallel to the upper surface and the open end is defined by at least a portion of the upper surface. The notches are configured to increase the caliper of the cellulosic web when the creping blade crepes the cellulosic web from an outer surface of the rotatable cylinder. Also provided are systems and methods for creping a cellulosic web and creped paper.

Abstract: In a paper machine having a roll rotating about an axis extending in a cross machine direction, and having a doctor blade applied to the roll surface by a blade holder parallel to the axis and carried on a doctor back, an apparatus is provided for accommodating relative movement between the blade holder and the doctor back in the cross machine direction during mounting and removal of the blade holder. The apparatus comprises a rail fixed to the doctor back and extending longitudinally in the cross machine direction. A groove extends along the length of the guide rail. The groove has a bottom, a width measured between confronting sides, and a top defined by ledges projecting inwardly from the sides, with inner edges spaced one from the other to define a slot that underlies the blade holder and has a width narrower than the width of the groove. A plurality of shafts are spaced along the length of the blade holder and project downwardly through the slot and into the groove.

Abstract: A beam with a continuous body (11) of a composite material has end pieces (13) fitted at each end of the body (11) and axle journals (12) fitted on the end pieces (13). Each axle journal (12) is supported on the frame constructions of the machine by means of a support construction (15, 20, 21, 30, 31, 100), in which there are bearing members (21, 31) fitted at a distance from one another in the longitudinal direction of the axle journal (12). The bearing members (21, 31) are fitted in bearing housings (20, 30), and a bending mechanism (40, 50, 60) is fitted in the support construction (15, 20, 30, 100), by which a torque is applied that bends the body (11) of the beam. The beam may support doctor blades, various measurement devices, induction devices, and coating devices.