Abstract: Apparatus for washing and dewatering pulp including a pair of rotatable press rolls with a permeable outer surface in a casing including a vat in which the press rolls are installed is provided. A gap is provided between the vat and the press rolls as well as means for feeding the pulp into the gap between the rolls and the vat includes a first segment partially enclosing the first roll and a second segment partially enclosing the second roll, and casing members for each segment are pivotable about axes of rotation to open and close the casing, and the distance between the axes of rotation is less than the sum of the outer diameter of the two press rolls.

Abstract: For measuring the water content of a web in the wire section of a paper machine, at least one radiofrequency-operated resonator sensor forms an electric near field, in which a web affects the resonance frequency of each resonator sensor. The water content of the web is measured as a function of the resonance frequency of each resonator sensor in a measuring unit.

Abstract: A device for drying and treating a fiber-based moving fiber web (1) in a machine intended for producing tissue paper includes a metal belt (2) which is arranged to support the fiber web (1) and to transfer the fiber web (1) in the machine direction and which metal belt (2) is arranged as a continuous rotating cycle, at least one roll (3) the shell of which is in contact with the metal belt (2) arranged to rotate around, which roll (3) is for supporting and/or controlling the metal belt (2), and at least one counter element (5) arranged to create a contact area outside the metal belt (2) between the metal belt (2) and the counter element (5) for a process zone (6), via which process zone (6) the fiber web (1) is arranged to travel when using the device.

Abstract: A screw pipe unit intended to cooperate with and at least partly enclose a screw in a plug screw feeder for cellulose chips/pulp is provided. The screw pipe unit comprises a plurality of openings for filtrate dewatered from the chips/pulp in the screw pipe when the plug screw feeder is in operation. The screw pipe is, on at least a portion of its inner surface, provided with bars inclined with respect to the longitudinal axis of the screw pipe. The angle of inclination of the bars decreases in the longitudinal direction, from a first portion of the screw pipe unit with maximum inclination to a second portion of the screw pipe unit with bars substantially parallel to the axis, the second portion being further away from the inlet end of the screw pipe unit than the first portion.

Abstract: Method of making a heat transfer materials are generally provided, along with the materials and the methods of using the materials. A splittable layer can be formed to overlie a base sheet, and an image-receptive coating can be formed to overlie the splittable layer. The image-receptive coating can include thermoplastic microparticles, a thermoplastic binder, and a humectant. The thermoplastic microparticles can be styrene particles having an average particle size of from about 5 microns to about 80 microns and melt at temperatures between about 90° C. and about 115° C. A second thermoplastic microparticle can also be included in the image-receptive coating. Alternatively, a combination of thermoplastic polyester microparticles and thermoplastic polyamide microparticles can be included in the image-receptive coating. The heat transfer material can then be dried. The humectant is configured to draw moisture back into the heat transfer sheet after drying.

Abstract: Apparatus and methods for controlling the flow of a pulp suspension from a container in which the pulp is processed or stored are disclosed. The container is pressurized to a first pressure and includes an outlet for the pulp suspension, a pump includes an inlet and an outlet, and the pump inlet is connected to the container. The pulp suspension is fed from the inlet to the outlet of the pump and provides a controlled decrease in pressure to which the pulp suspension is subjected in the pump during such transport, and the flow from the container is controlled by adjusting this controlled decrease in pressure.

Abstract: An injector for a flotation cell, comprising a feed channel for feeding a fiber suspension flow to the flotation cell, a flow distribution element for distributing the fiber suspension flow fed to the injector into partial flows, a mixing apparatus for mixing air with the fiber suspension flow, and at least one air input point for sucking air to be mixed with the fiber suspension flow into the injector. The feed channel, the flow distribution element and the mixing apparatus are in the injector arranged with respect to one another such that a flow direction of the fiber suspension flow in the feed channel is substantially opposite to a flow direction of the fiber suspension flow through the flow distribution element and the mixing apparatus.

Abstract: Treatment liquid is sprayed onto a fibrous web surface by one or more spray boxes (21, 22, 23) having a spray chamber (4) and spray nozzles (1) in the travel direction of the fibrous web before a nip (N1 . . . N7; N8; N9) formed between them by two nip means (11 . . . 18) provided with a movable surface, and air and/or treatment medium mist is removed from the spray chamber and after having added treatment liquid the fibrous web is pressed in this nip. The spray chamber (4) is formed between a first spray box (21, 22, 23; 24; 25) and any successive first nip means (13; 52, 53; 62, 63) and second nip means (13; 52, 53; 62, 63), the fibrous web is guided supported by the surface of the first nip means to the spray chamber and the fibrous web is supported thereon during the spraying of treatment liquid.

Abstract: Methods and products for forming a coated image on a substrate are generally disclosed. The methods can include forming an image on a printable surface of a transfer coating layer of a printable transfer sheet. In a separate step, the negative mirror image of that same image is printed with toners on a toner printable sheet. After registering the sheets together, a portion of the transfer coating layer of the printable transfer sheet is transferred to the toner printable sheet, such that the portion of the transfer coating layer transferred to the toner printable sheet corresponds to the imaged areas on the toner printable sheet. However, the image formed on the printable surface of the transfer coating layer and the underlying transfer coating substantially remain on the printable transfer sheet. Thereafter, the image and the transfer coating layer remaining on the printable transfer sheet are transferred to a substrate.

Abstract: A device for mechanical defibration of wood comprises a defibration surface for processing of wood raw material and loosening of fibers, said defibration surface comprising grinding grits fastened on a metal base surface. The grits (1) fastened on the metal base surface (2) are positioned within a determined distance from each other on the base surface, so that they form a regular defibration surface.

Abstract: A refiner (1) for refining fibrous material has a first refiner element (3, 5) and a second refiner element (3, 5). The second refiner element is arranged around the first refiner element in such a manner that the first refiner element and the second refiner element have a common middle axis (7) such that there is a refining space (8) between the first refiner element and the second refiner element. The first refiner element and/or the second refiner element are arranged to rotate around the middle axis and the refiner elements have refining surfaces (4, 6), through which the fibrous material is fed into or exits the refining space (8). The refiner has, in the direction of the middle axis of the refiner elements, at least two feed regions, through which the fibrous material to be refined is feedable into the refining space (8).

Abstract: An injector of a flotation cell, the injector comprising a feed pipe for feeding a fiber suspension flow into the flotation cell, a mixing apparatus for mixing air into the fiber suspension flow and at least one air feed connection arranged before the mixing apparatus for feeding air into the injector. The injector further comprises a nozzle section which is arranged before the mixing apparatus and comprises an aperture plate provided with apertures and nozzles fixed to the aperture plate substantially at the apertures after the aperture plate, there being open spaces between the nozzles. The air to be fed from the air feed connection is arranged to flow into the spaces between the nozzles and further into the mixing apparatus with the partial flows of the fiber suspension flow entering from the nozzles.

Abstract: A sorting deck for paper, board, or pulp rolls has a plane (1) for transporting the rolls and controllable stops (2) for holding the rolls in place and releasing them. The stops (2) are positioned to form at least one line (3) in placed consecutively in the longitudinal direction (4) of the plane (1), and at least one row (5), in which the stops (2) are positioned adjacently to each other along the lateral direction (6) of the plane (1). At least some of the stops (2) are a collector (41) and a feeder (42), both of which can be moved freely between the hold and release positions, so that the travel of the rolls over the stop (2) can be optionally prevented, freely permitted, or permitted one roll at a time. The same sorting deck can be used to handle rolls of different widths.

Abstract: The present invention relates to a reeling apparatus (1) for fiber web by which fiber web may be wound to successive reels (4). The reeling apparatus has cutting devices (6) for cutting the web during a reel change, the cutting device being provided with at least one cutting head (6.2) disposed movable in a direction essentially transverse to the web direction to cut the web. A contactless web supporting arrangement (7) is been provided in operational connection with the cutting device to maintain the running of the web stable in a controlled manner during the cutting.

Abstract: The invention relates to method of supporting a unloading conveyor bridge extending substantially horizontally at the bottom level of a bulk material pile storage, implemented as supports in the area of the bridge ends as well as in at least one point therebetween. At least one of the supports is positionally adjusted in the vertical direction. The support force is thereby kept substantially constant at the actual support point. For the adjustment can be used spring loading, fluid pressure loading or gravity loading, for example.

Abstract: A method of adhesive-free threading of a fibrous material web for winding around a winding body includes the steps of diverting the fibrous material web in the circumferential direction of the winding body, guiding the fibrous material web with its unfolded leading edge ahead in the direction of a nip formed between the winding body and a drum and catching the leading edge of the fibrous material web by interaction with the fibrous material web and/or the winding body. An apparatus for adhesive-free threading of a fibrous material web for winding around a winding body has a diverting device for diverting the fibrous material web in the circumferential direction of the winding body and a mechanical guide for guiding the fibrous material web with its unfolded leading edge ahead in the direction of a nip formed between the winding body and a drum.

Abstract: Methods of making a stenciled screen for use in screen printing an image onto a substrate are generally disclosed. The method involves removing a portion of a transfer coating from a transfer sheet via heat transfer with a printable sheet defining a printable surface. The portion of the transfer coating removed from the transfer sheet corresponds to areas where an ink is present on the printable surface of the printable sheet. The transfer coating can then be transferred to a screen to form a stenciled screen having closed mesh areas corresponding to where the transfer coating is present. The stenciled screen can then be used to screen print an image onto any of a variety of fibrous substrates.

Abstract: A doctor apparatus for a web forming machine for doctoring a moving surface with the doctor apparatus (10) has a blade (16), a blade holder (14) to which the blade (16) is adapted, a frame component (12) to which the blade holder (14) is adapted, and a loading element (23) arranged between the frame component (12) and the blade holder (14) for loading the blade holder (14) and further the blade (16). The loading element (23) is tied to both the frame component (12) and the blade holder (14). The invention also relates to a blade holder (14) and a method for a web forming machine for doctoring a moving surface (26).

Abstract: A digital hydraulic controller has a feed line, a drain line, an output line and a plurality of individually switchable on/off valves which selectively connect the feed line to the output line or which connect the output line to the drain line. A controlled quantity is detected which includes a pressure and/or a flow rate of a fluid in the output line. One of the valves is selected to be switched to control the amount and direction of fluid passing through the valve for controlling the controlled quantity to approach a target value. A test sequence is performed including calibration of the individual valves by alternately opening two of the valves, one of which connects the feed line to the output line and the other connects the output line to the drain line, and by calculating and setting calibration values for the individual valves.

Abstract: A support arrangement (10) of a roll of a fibrous-web machine, has a first frame part (12) in which the roll (20) of the fibrous-web machine is supportable from its end when in use and a second frame part (22) in which the first frame part (12) is fastened by means of an elastic fastening. The arrangement has a motion direction control arrangement (34) for controlling the direction of the motion allowed by the elastic fastening in a way determined by the direction control arrangement (34).