Abstract: The present invention relates to a twin-wire press (2) for dewatering of a fibre suspension, comprising lower and upper rolls (4, 6), an endless upper and lower wire that runs around the rolls and a first (8, 8?) and a second dewatering table, respectively, which forms a dewatering space (12) between the wires. AA roll arrangement (14) is provided in a press frame (16). A press and lift arrangement (18) is arranged to the first dewatering table 10 for vertically adjusting the first dewatering table. A link system (20) is arranged with a joint (22) at the press frame (16) and arranged with a joint (24) at an upper section of the first dewatering table, whereby the first dewatering table can be moved from and against the second dewatering table by movement by means of the press and lift arrangement (18).

Abstract: In paper and board machines the position of a rolling device relative to another rolling device and/or the force exerted by the rolling device on the other rolling device or any variable acting on these is measured, and the value of the measured variable is compared with the set value of said variable in order to obtain the difference value of the variable, and the position of the rolling device and/or the force it exerts on the other rolling device is controlled on the basis of the difference value. The fluid pressure of the hydraulic means (5) and/or the flow velocity of the fluid to the hydraulic means is changed in order to alter the difference value of the variable by opening and/or closing at least one digital valve in a digital valve pack (7) functionally connected to the hydraulic means (S).

Abstract: In a method and an apparatus for controlling reeling used in connection with the making of paper/board/some equivalent web-like material, a reeler is used in the reeling which has a reeling element (2), a reeling core (T), around which the web (W) is reeled to form a reel (3), as well as elements for loading the reeling core (T) and the reeling element (2) against each other in order to bring about a reeling nip (N) in between the reeling element (2) and the reel (3). The reeling is monitored by a detection apparatus, which automatically detects any events differing from normal reeling.

Abstract: The narrow-scale moisture profile of a paper web is controlled by profiling nozzles (11) of a profiling device (10) which cover part of the width of the web and desired variations of the moisture profile are corrected by the profiling nozzles (11). Coating quantity profile of a paper web may also be controlled. The narrow-scale coating quantity profile is controlled by profiling nozzles (11) of a profiling device (10) which cover part of the width of the web and desired variations of the coating quantity profile are corrected by the profiling nozzles (11). The device (10) for controlling the moisture profile or the coating quantity profile of a paper web has profiling nozzles (11) for controlling narrow-scale moisture profile variation, which cover a desired part of the width of the web, to correct desired variations occurring in the profile in the width direction of the web.

Abstract: A vane intended for a headbox of a paper machine or equivalent is moistened and enclosed in a vapor-proof package to ensure the straightness of the vane. At least a portion of the vane is made of a water-absorbing material, such as plastic or a composite. Advantageously, the vane contains moisture in an amount that corresponds to the equilibrium moisture content of the vane in headbox conditions. It is enclosed in a package, preferably a vacuum package, which retains the moisture of the vane until the vane is put into use.

Abstract: A beam structure for a web forming machine is arranged to be supported by its end components (10) on the web forming machine. The beam structure includes a casing structure (15) of a thin-sheet material, inside which a stiffener structure (30) is arranged. In addition, the casing structure (15) and the stiffener structure (30) are secured to each other to create a load-bearing beam structure.

Abstract: A web of tissue is formed in a twin wire former, followed by an air press for water removal in the pressing section, passing onto a Yankee dryer. A headbox injects stock between upper and lower dryer fabrics brought together on a breast roll. The fabrics moves over vacuum boxes, and the web is heated with steam and passed between an upper pressure box and a lower vacuum box forming an air press which dewaters the web. A sheet transfer pickup vacuum box holds the sheet to the upper fabric as the lower fabric diverges from the upper fabric. A pressure roller transfers the web onto a Yankee dryer. The fabrics are cleaned on vertical runs before returning to the breast roll. A final forming fabric is arranged to operated at a lower speed than the penultimate forming fabric so that a rush transfer and creping like action takes place.

Abstract: The invention concerns a method for feeding chips into a chip bin or corresponding, the chips in said method being forced to move substantially horizontally as a plug filling the cross-section of the transfer space. The chip plug is formed and maintained at a part of the length of the transfer space with chips forced batchwise to the transfer motion.

Abstract: A tail turn-up assembly has a frame positioned upstream of a reel spool. A carriage is pivotally mounted to the frame by a four bar linkage. The carriage is pivotable, from a retracted position to an extended position. When the carriage is engaged with the reel spool, a pair of curved tracks are positioned so that arcs defined by the tracks have their centers coincident with the spool axis. A knife carriage rides on the curved tracks and is constrained to move circumferentially about the reel spool. An actuator on the carriage causes the knife carriage to traverse circumferentially about the reel spool. The knife carriage has a leading edge formed by a knife which tears through the a tail which is cut from the web when the knife carriage is moved on the curved tracks.

Abstract: A cradle for a film, coating, or sealing rod has a profile (10) that includes a base part (11), a rod groove (16), and a body part (14) between them. The rod groove (16) is arranged to receive the rod (12) between lips (20, 20?) edging the rod groove (16). The circumference lying against the rod (12) is formed at least partly of a slider piece (22), which is an insert-molded part of the profile (10), and which is of a material other than the material of the base part (11) and the body part (14).

Abstract: The object of the invention is an apparatus for storage of wood chips in a curved-top stockpile the apparatus consisting of a central tower, which supports a conveyor for loading the chips and a beam-like turning pile composer, and a unloading beam supported on ground level on the lower part of the tower as well as on supporting wheels and furnished with unloading devices for transporting the wood chips towards the center of the apparatus. The central tower is furnished at one side with a tubular ex-central opening, and the tower occupies a central tube for delivering the wood chips either upwards or downwards from the opening. The unload drive for the unloading device is positioned inside the tower and the stockpile yard is furnished with a wall at the reach of the unloading device.

Abstract: The invention relates to a method for controlling a surface quality variable (300) in one or more fiber webs (3) in a shoe calender (1) comprising one or more calender nips. In each calender nip of the shoe calender, the overall loading pressure of the shoe element (8) and the loading pressure difference between the leading edge (8?) and the trailing edge (8?) of the shoe element are controlled so as to achieve minimum difference between the determined values (300?) for the surface quality variables of the fiber web and the set values (300?) for the same quality variables after the shoe calender.

Abstract: A method and apparatus for determining the position, relative to the grab (1, 2) transporting them, of the end heads used in packing paper, cellulose, and board rolls, when the end head is attached to the grab (1, 2). When measuring, a detector (7) is transported along such a circular curve, which is assumed to be intersected by the circular curve defined by the edge of the end head. the angle position of the detector (7) on the circular curve of its path is measured and the intersection points (x1, z1; x2, z2) of the curve travelled by the detector (7) and the edge of the head are detected. The position of the centre point (x0, z0) of the end head is calculated on the basis of (a) the radius of the circle travelled by the detector and the position of the centre point (xm, zm) of the circle, (b) the position (xt, zt) of the grab's tool point, (c) the assumed radius of the end head, and (d) the positions (x1, z1; x2, z2), of the detected intersection points.

Abstract: A screening apparatus for screening pulp suspensions is disclosed, comprising a housing, a screen basket having a tubular mantle wall with screen apertures, the mantle wall dividing the interior of the housing into a central chamber and an outer substantially annular chamber, and a rotor arranged in the housing for providing pressure and suction pulses in the suspension to be screened along the mantle wall. At least one elongated support element connects the screen basket to the housing and at least one load sensor is arranged on the support element for sensing the load exerted by the screen basket on the support element during operation of the apparatus. A control unit controls at least one operating parameter, such as the consistency of the suspension or rotational speed of the rotor, during operation in response to signals from the load sensor.

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: Apparatus for sealing a cylindrical roll with respect to a trough in which the roll is disposed is disclosed, the apparatus comprising an end seal applied to the end surface of the cylindrical roll, a longitudinally extending seal applied to the barrel-shaped outer surface of the cylindrical roll, and a spring for dynamically urging the end seal against the end surface of the cylindrical roll and against the longitudinally extending seal.

Abstract: A refining element for use in the refining of fibrous materials is disclosed in which the refining surface includes an inner portion and an outer portion defining a transition region between these two portions, a plurality of bars and grooves in the inner portion of the refining surface, and a plurality of bars and intermediate grooves in the outer portion of the refining surface, the bars in the inner surface having a greater width than those in the outer surface, and the transition region having a varying distance from the inner edge of the refining element across the refining surface.

Abstract: A vacuum belt conveyor of a web forming machine for transferring a threading tail has at least two turning rolls (16, 17) and an air-permeable belt loop (20), arranged around the turning rolls (16, 17). The vacuum belt conveyor also has vacuum means (22) for creating a vacuum effect on both the section of the belt loop (20) conveying the threading tail (23) and in connection with the first turning roll (16) of the turning rolls (16, 17). Arranged in connection with the first turning roll (16) in the travel direction of the threading tail (23) there is at least one cross-directional dividing structure (24) for creating at least two axial vacuum zones (25).

Abstract: A dewatering arrangement in the press section of a web-forming machine having a press suction roll (10) and a press fabric (13) arranged to run via the press suction roll (10). The dewatering arrangement has a saveall (15), which is installed in conjunction with the press suction roll (10), and drainage facilities (18) for removing the collected water from the saveall (15). The saveall (15) has a concave guide surface (19) which in the cross direction is located on a partial distance of the circumference of the press suction roll (10) and at a distance from the surface of the press suction roll (10) in order to accomplish a vacuum effect and to hence remove water from the press suction roll (10).

Abstract: Refining elements for use with disc refiners for the processing of fibrous materials are disclosed. The refining element include a refining surface having a plurality of bars and intermediate grooves, with the bars having an upper surface and a pair of side surfaces defining longitudinal edges, with the plurality of bars including a plurality of recesses disposed along at least one of the longitudinal edges, the recesses including open portions in both the upper surface and one of the side surfaces thereof.