Abstract: Process and apparatus for dewatering a fibrous material web. The process includes guiding the fibrous material web through a dewatering zone, and directing a plurality of gas pressure pulses of a pressurized displacement gas one after the other onto a surface of the fibrous material web within the dewatering zone. The apparatus includes a device for forming a plurality of gas pressure pulses which are arranged one after the other within the dewatering zone. The plurality of gas pressure pulses are directed onto a surface of the fibrous material web.

Abstract: Machine for producing a web includes a former for sheet formation of the web, a press section for dewatering the web, a drying section for drying the web, and at least one edge strip forming device positioned in an area of at least one of the press section and the drying section, which is arranged to separate at least one edge strip from the web.

Abstract: Apparatus and process for dewatering a material web. The apparatus includes at least one pressure chamber formed by at least four substantially parallel rolls, a device arranged to introduce a pressurized gas into the at least one pressure chamber, and the at least four substantially parallel rolls being displaceable relative to one another to change an effective area of the at least one pressure chamber. The material web is guided through the at least one pressure chamber. The process includes pressurizing at least one pressure chamber with a gas medium, guiding the material web through the pressure chamber, driving water out of the material web using gas pressure within the at least one pressure chamber, and changing an effective area of the pressure chamber so as to adjust a dewatering capacity.

Abstract: A sealing device and process for laterally sealing at least one overpressure zone or underpressure zone adjacent to an actuating surface in a paper-making machine. The sealing device has at least one sealing element arranged movably at least locally in an intake area of a support. The sealing element is loaded with a sealing or opposing force in order to place it against the actuating surface. A stopping element is fixed at a distance from the actuating surface which limits the seating motion of the sealing element.

Abstract: A winding machine and process for winding a material web onto a reel. The material web is guided around a carrying drum, in which a nip is formed between the carrying drum and the reel. One of the reel and the carrying drum may be cyclically inclined in relation to a travel direction of the material web by a drive device or press device in order to achieve an axial changing of the material web in a winding roll.

Abstract: Cleaning device to clean a roll, e.g., a concrete or granite roll, in a paper machine. The cleaning device may include a spray unit that may include a high-pressure spray device having an operational pressure of at least approximately 10 bar to spray a surface of the roll with a cleaning agent and a device to remove the cleaning agent from the roll surface.

Abstract: A method and device for the winding up of a moving web of paper (9) on a reel spool (11), as large a part as possible of the developing wound roll (12) having a high degree of winding hardness (WH), characterized by the fact that a relatively soft intermediate layer is formed between the wound roll (12) of high winding hardness and the winding core (11). This is achieved in the manner that, during a short initial phase of the winding process, it is ensured that the winding hardness (WH) is relatively slight in the innermost layers of the wound roll (12), whereupon an immediate transition to a relatively high winding hardness (WH) is effected which is being substantially maintained during the rest of the winding-up process. Alternately, the relatively soft intermediate layer can also be created in the manner that the reel spool (11A-11D) has a soft covering (41, 42, 43, 44, 45, 46, 47) on a metal reel spool body (40).