Abstract: The invention relates to a device for winding fiber webs, particularly paper and board webs, into partial web rolls, which device includes winding stations (20) for winding partial web rolls (R1 . . . Rn) via a nip between a winding roll (12; 13) and the roll being formed (R1 . . . Rn). The winding stations (20) are supported on a floor (25) or equivalent foundation and the mass of the roll being formed (R1 . . . Rn) forms at least part of the nip load of the nip between the winding roll (12; 13) and the roll being formed (R1 . . . Rn).

Abstract: A method for modernizing a existing multiroll calender, having at least one stack of calender rolls (10, 20), each stack comprising at least two calender rolls (11, 12, 13, 14, 21, 22, 23, 24) and at least one of the calender rolls being a smooth-surfaced press-roll (12, 22). In an existing multiroll calender the smooth-surfaced press roll (12, 22) is replaced by an ultra thermo roll that is a thermo roll with a diameter substantially the same or less than the thermo roll to be replaced, so that the surface temperature of the ultra thermo roll when heated is at least 110° C., and has at least 10° C. higher than the surface temperature of the existing roll with the same heating fluid temperature and having flow channels arranged in such a way that vibration excitation is minimized, by being arranged to form a spiral geometry in the mantle.

Abstract: An arrangement for treating a fiber web, in particular for sizing paper and board web (W), using a sizer (10) which has sizing equipment (3, 4) located on both sides of the web (W) and size press rolls (5, 6) located on both sides of the web (W) in between of which a size nip is formed. The web (W) when approaching the sizer (10) is first guided past the size nip of the sizer (10) in a process direction (D) and then is turned into an opposite direction (OD) in relation to the process direction (D) by at least one turning guide roll (15) such that the top side (TS) of the web (W) is sized by sizing equipment (4) located below the web (W).

Abstract: A refiner (1, 18, 19) for refining fibrous material has at least one first refining surface (11) and at least one second refining surface (4), which are arranged at least partly substantially opposite to one another in such a manner that a refiner chamber (12) is formed between them, to which the material to be defibrated is arranged to be fed. The first refining surface or the second refining surface has openings formed through them and through which fibrous material to be refined can be fed into the refiner chamber or through which refined fibrous material can be removed from the refiner chamber. In addition, a method for refining fibrous material, a refining surface of a refiner and a blade segment for a refiner.

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: 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: The invention relates to an arrangement in connection with the press section of a web-forming machine. The arrangement includes at least one press nip for dewatering the web manufactured on a web-forming machine. The arrangement also includes a smoothing press including a smoothing roll arranged after the press nip. The smoothing press includes smooth heat carrying devices arranged as a loop around at least two guide rolls. The smoothing roll is arranged into contact with the devices between two guide rolls. The smoothing roll and/or at least one of the guide rolls is a steam heated drying cylinder or a steam heated roll modified thereof. The invention also relates to a board or paper produced in such arrangement.

Abstract: A refining surface (1, 2) of a refiner for defibrating lignocellulose-containing material has a first blade bar (14?) and a second blade bar (14?) with a blade groove (15) therebetween. A third blade bar has a rising guide surface (21) for guiding the lignocellulose-containing material to an upper surface (14c) of the third blade bar. The third bar guide surface is arranged, in the direction of travel of the first and the second blade bar (14?), at least partly between the first and the second blade bar, between the first blade bar and an imaginary extension of the second blade bar, between an imaginary extension of the first blade bar and the second blade bar, or between the imaginary extensions of both the first and the second blade bar.

Abstract: Apparatus for washing and dewatering pump comprising a pair of rotatable press rolls with permeable outer surfaces, a casing comprising a vat in which the rolls are installed, and a feed for feeding the pulp to the gap formed between the vat and the press roll is disclosed. The vat includes a first side vat segment partially enclosing the first press roll and a second side vat segment partially enclosing the second press roll and casing members for each of the vat segments, the first casing member being pivotable about an axis of rotation and between closed and open positions, pulp distribution devices for distributing pulp onto the press rolls, at least one of the pulp distribution devices being mounted on the casing member whereby it is moved away from the press roll together with the casing member when it is opened.

Abstract: A paper or board machine having a machine dryer section with a drying group with single-wire draw. A drying wire (F) presses the web (W) on a drying cylinder (10) against heated cylinder surfaces, and the web (W) remains at the side of the outside curve of reversing cylinders (11) situated between drying cylinders (10). For enhancing runnability of the web (W), a runnability component (20) is in a pocket space (T) confined by two adjacent drying cylinders (10) and a reversing cylinder (11) situated between them and by the drying wire (F). The web (W) passes from the drying cylinder (10) to the reversing cylinder (11) as a short transfer of 80-400 mm, where a negative pressure effect produced by the runnability component (20) is applied and confined by seals of the runnability component (20) against the surfaces of the drying cylinder (10) and reversing cylinder (11).

Abstract: The invention relates to a method in a fiber web machine. In the method, a fabric (12) included in the fiber web machine is used for supporting a web (14) produced by the fiber web machine. Moreover, in the method the location of the fabric (12) is changed in the cross direction (CD) of the fiber web machine. The location is changed by means of oscillation, the amplitude (19) of which is kept so high that the area of impact (20) of the web (14) on the fabric (12) is wider than the width (21) of the web (14) throughout the lifetime of the fabric (12). The invention also relates to an arrangement in a fiber web machine, and to a software product.

Abstract: A roll coating is manufactured having fiber and polyurethane made from aromatic isocyanate. The roll coating incorporates fiber having improved strength during the manufacturing stage, and so does not crack, as a result of which the coating can be s manufactured in a simple, efficient and inexpensive manner. A roll of a fiber web machine has a roll body having a coating of fiber and polyurethane that is made from aromatic isocyanate, on the roll body.

Abstract: A booster for a digital hydraulic controller which has at least one digital valve (40). The booster is connected to a magnetic coil (41) of a valve stem (42) of the digital valve (40) by at least two voltages (21, 22) wherein one voltage (21) is higher than the other voltage (22). The invention also relates to a method for using a booster in connection with a digital hydraulic controller.

Abstract: Treatment liquid is sprayed onto a fibrous web surface by one or more spray boxes (21, 11, 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, 11, 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: A fiber web is reeled by a reeling drum of a reel-up onto a parent roll. When the parent roll has reached the desired diameter size, reeling is changed from the parent roll onto a new parent roll. The web is cut by jet cutting means and the beginning part of the cut web is directed onto a reeling shaft of a new parent roll. The jet cutting path has a main cutting path and at least one edge area cutting path. The length of the main cutting path is at least 60% of the whole cutting path length from one edge of the web (W) to the other edge of the web (W). A turn-up device for a reel-up has one cutting module (15) and at least one nozzle (11) for jet cutting, which is attached movably and turnably to the module (15) by a cutting arm (12).

Abstract: Moisture profiling is carried out in the transverse direction of a moving paper or board web. An air dryer has a first air supply channel extending transverse to the web and second air supply channels which are connected with the first air supply channel, and into which heated drying air is supplied from the first air supply channel. The second air supply channels are parallel to the travel direction of the web. The air dryer has elongated blowing members, each arranged in connection with a plurality of second air supply channels for supplying heated drying air from the second air supply channels to the blowing members. A profiling connection is arranged in connection with at least one, preferably several, second air supply channels for supplying additional air into the second air supply channel in order to change the moisture profile of the web in the transverse direction of the web.

Abstract: A refiner or disperser blade is made of a steel alloy by casting. The alloy comprises, in weight percent: 0.6 to 4 wt-% carbon (C), 0.5 to 1.5 wt-% silicon (Si), 0.4 to 1.5 wt-% manganese (Mn), 12 to 28 wt-% chromium (Cr), 4 to 12 wt-% niobium (Nb), as well as iron (Fe).

Abstract: A method and apparatus are described for controlling a coating head, which exerts a nip pressure to a fibrous web to be coated while the fibrous web is supported by a backing roll. An output signal of a sensor integrated within the backing roll is read, thus producing a measured indication of the nip pressure. A number of actuator control values are derived at least partly from said measured indication of the nip pressure. Said actuator control values are delivered as commands to a number of respective actuators that contribute to creating the nip pressure, to control an amount of a coating substance on the fibrous web in the coating head.

Abstract: The invention relates to vacuum equipment for a fiber web machine. The vacuum equipment includes a frame (13) arranged to be supported to the fiber web machine. The vacuum equipment also includes a wearing construction (15) adapted to the frame (13) and arranged partially open on the surface by means of several openings (14) for extending a vacuum effect out from within the frame (13) and further to a fabric (16) included in the fiber web machine and set in contact with the wearing construction (15). The wearing construction (15) is a plate construction (17), the raw material thickness s of which is equal to or smaller than the distance x between the opposite edges (18, 19) defining the opening (14). The invention also relates to a fiber web machine provided with vacuum equipment.

Abstract: A stopping device (10) for a segmented roll in a fiber-web machine for assisting the stopping of the rotation of one or more roll segment(s) (52) of the segmented roll (50) has at least one braking device (12), by means of which the roll segment (52) can be stopped, and at least one surface contact member (14, 14?), which surface contact member is connected to said braking device, and the stopping device further comprises actuators (16) for optionally bringing/releasing the surface contact member into/from surface contact with the shell of one or more roll segment(s) (52). The invention also relates to a segmented roll assembly (60) in a fiber-web machine, in which the segmented roll (50) comprises at least two, independently from one another rotatable roll segments (52) that are located end-to-end substantially in the transverse direction of the fiber-web machine.