Abstract: A wire section for forming a multi-ply fiber web. The wire section includes a first belt which advances a first fiber ply toward a couch roll defining a combining section. A twin-wire zone of the wire section includes first and second wires between which a second fiber ply is initially formed in a gap former. The second wire separates from the first wire and then the first wire supporting the second fiber ply meets the first belt supporting the first fiber ply at the couch roll of the combining section to form the multi-ply fiber web. The twin-wire part is arranged upstream of the combining section along the running direction of the first belt. The second fiber ply runs on the first wire into the combining section at an angle less than 90° with respect to the belt entering the combining section. The path of the wires from the forming roll to the combining section is disclosed. A suction box or arrangement holds the second fiber ply to the first wire when the first and second wires separate.

Abstract: A two-component coating composition comprising (I) a component comprising at least one isocyanate as crosslinking agent and (II) a component comprising at least one binder having functional groups which react with isocyanate groups. Component (I) comprises at least one isocyanate Ia) having at least one diisocyanate structural unit which has an unsaturated/aromatic or non-aromatic ring structure having 5-10 ring atoms and two isocyanate groups attached to the ring structure. Instead of this isocyanate Ia) or in addition thereto it is possible to use an oligomer Ib) of this isocyanate Ia) having from 2 to 10 isocyanate units, especially a trimer Ib) and/or partially blocked isocyanates Ia) and/or oligomers Ib)(=crosslinkers Ic).

Abstract: Device and method for draining a web in a paper production machine. The device may include a press section having at least one press nip for draining and smoothing the web. The at least one press nip may be arranged to smooth one surface of the web more than its opposite surface and the device may also include a roughening device that roughens the one surface of the web. The method may include guiding the web through a press section of the paper production machine to drain and smooth the web in which the press section include at least one nip, smoothing one surface of the web more than its opposite surface in the at least one nip, and roughening the one surface.

Abstract: A wet section (10) of a paper or cardboard machine and a process for the manufacture of a fibrous material web are suggested. The wet section (10) exhibits a double-screen segment (US), in which two screens (16, 18) are guided about parallel to one another and into which a fibrous material suspension (27) is introduced. The double-screen segment (US) is looped around a roll (22). The means (30, 32, 38) for the immobilization of the fibrous material suspension in the double-screen segment (US) are provided on the roll (22), for the formation of the fibrous material web. Moreover, the wet section exhibits means (32, 34, 36; 34, 36, 66) for further draining of the fibrous material web.

Abstract: Suction roll for the formation or treatment of a material web that includes an outer suction roll jacket comprising a perforated rotating hollow cylinder, a non-perforated support body arranged to extend through the outer suction roll jacket and to support the outer suction roll jacket at at least one point of its axial extent, and sealing ribs arranged to extend radially between the support body and the suction roll jacket and axially over a full length of the suction roll jacket. In this manner, the support body is adapted to rotate at a same speed as the suction roll jacket. The support body can include an axially extending, through-going bore arranged concentrically with the outer suction roll surface. An axially extending, rotationally fixed yoke extends through the through-going bore, and the rotationally fixed yoke has two ends which are supported outside of the support body on a frame. At least one support element is arranged to support the support body on the yoke.

Abstract: A wire section for forming a multi-ply fiber web. The wire section includes a first belt which advances a first fiber ply toward a couch roll defining a combining section. A twin-wire zone of the wire section includes first and second wires between which a second fiber ply is initially formed in a gap former. The second wire separates from the first wire and then the first wire supporting the second fiber ply meets the first belt supporting the first fiber ply at the couch roll of the combining section to form the multi-ply fiber web. The twin-wire part is arranged upstream of the combining section along the running direction of the first belt. The second fiber ply runs on the first wire into the combining section at an angle less than 90.degree. with respect to the belt entering the combining section. The path of the wires from the forming roll to the combining section is disclosed. A suction box or arrangement holds the second fiber ply to the first wire when the first and second wires separate.

Abstract: Press section of a machine for manufacturing a fibrous pulp web. The press section may include a press roll, at least one flexible circulating press belt, at least one press shoe, and at least one extended press nip formed to extend in a web run direction by the press shoe pressing the flexible circulating press belt against the press roll. The press section further includes one of a felt or screen belt that may be guided through the at least one extended nip, and the press roll may be substantially centrally located within the press section and may have a diameter greater than a diameter of the at least one flexible circulating press belt. The center press roll has two press shoes positioned opposite it; the two press shoes are offset with respect to one another such that the direction of force exerted by each extends through the center press roll axis and defines an acute angle, with support elements within the center press roll positioned opposite the press shoes.

Abstract: The present invention is directed to a device for removing at least one of paper sheet remnants and a paper sheet from a belt. The device may include a blow device including at least one blow opening extending lateral to a travel direction of the belt and a compressor coupled to the blow device to supply compressed air to the at least one blow opening. The at least one blow opening may be directed toward the at least one of the paper sheet remnants and the paper sheet to be removed.