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| Number | Title | Issue Date |
| 7785444 | Cylindrical suction box assembly The present invention provides a cylindrical suction box assembly with a suction box having two or more suction chambers that operate at different suction pressures. A lower suction pressure suction chamber is configured to provide lower suction pressure suction and... | 08/31/2010 |
| 7686922 | Process and device for dewatering a fiber web A process and a device for dewatering a fiber web 3, especially a paper web, using vacuum. The vacuum seen by a given unit are of the web is pulsed between a maximum value V and a minimum value. At least one suction box 7 is provided with perforations ... | 03/30/2010 |
| 7351307 | Method of dewatering a fibrous web with a press belt A method of dewatering a fibrous web in a paper machine including the steps of carrying the fibrous web on a side of a first fabric; contacting the fibrous web with a side of a second fabric, the fibrous web being between the first fabric and the second fabric; and ... | 04/01/2008 |
| 7300553 | Arrangement for a wire section of a paper or board machine A web is formed between two wire loops (13, 14), in a wire section of a paper or board machine, in connection with which dewatering elements (12, 17, 15, 28) are placed and in which water is drained from a stock suspension from between the two wires ( | 11/27/2007 |
| 7141143 | Method and apparatus for draining fibre pulp suspension The invention relates to a method of draining a fiber pulp suspension, where the fiber pulp suspension is applied to a convergent dewatering space arranged between two wires travelling in the same direction. In the dewatering space, water and powdery substance are r... | 11/28/2006 |
| 7090746 | Process and device for removing water from a mechanical pulp, chemical pulp or paper sheet A process and apparatus for removing water from a mechanical pulp, chemical pulp or paper sheet, carried between top and bottom wires running through a dewatering machine having a first dewatering zone. The apparatus includes at least one suction box positioned down... | 08/15/2006 |
| 7005037 | Device for detaching a paper web from a wire The invention relates to a device for detaching a paper web 9 from a wire 4, where the pulp suspension is fed in between a wire 4 and a felt 5 by a headbox 2, the wire 4 and felt 5 are guided together over a forming r... | 02/28/2006 |
| 6998020 | Screen and process for paper patterning A screen (i) for use in forming a patterned paper by a wet-laying technique. The screen is of a mesh material (2) that is pervious to water and has formed therein repeats of pattern forming elements 3a–c, 4a–d and 5 whic... | 02/14/2006 |
| 6740204 | Apparatus for treating a fibrous web Apparatus for treating a fibrous web that includes at least one supporting surface arranged to support a surface of the fibrous web, and at least one sealing device positionable adjacent a surface of the web opposite the surface of the web supported by the at least ... | 05/25/2004 |
| 6706151 | Pulp moulding process and related system A pulp moulding process including the steps of pulp stock, forming wet products by means of forming die (7), transferring the wet products from the forming die by means of a heated transferring die-and-heated pressing tool arrangement (13)(14) f... | 03/16/2004 |
| 6682632 | Roll for a paper or board machine The invention relates to a roll for a paper or board machine comprising axle journals on whose support the roll is arranged to revolve, end flanges with which the axle journals are connected, and a mantle which is connected with the end flanges. The mantl... | 01/27/2004 |
| 6605189 | Suction box in a paper machine Suction box in a paper machine including a vacuum chamber, a deck or a number of substantially U-section holders open toward a wire and ribs arranged in the deck or the holders so that they can be loaded against the wire. At least in a running situation, ... | 08/12/2003 |
| 6419793 | Paper making apparatus having pressurized chamber Method for forming a continuous web on a forming fabric includes providing a pressurized chamber, processing the forming fabric through the pressurized chamber, and distributing a pressurized flow of a slurry having a first composition in the pressurized ... | 07/16/2002 |
| 6322669 | Method and arrangement in a web former for preventing rewetting of a web A method and arrangement for preventing rewetting of a web in a paper machine. In the method, a web supported by a wire is passed by at least two vacuum boxes/chambers after the last suction roll or equivalent in a web former such that, in the running dir... | 11/27/2001 |
| 6322668 | Suction box in paper machine and method in the suction box in a paper machine A suction box in a paper machine including a vacuum chamber, a deck or a number of substantially U-section holders open toward a wire and ribs arranged in the deck or the holders so that they can be loaded against the wire. At least in a running situation... | 11/27/2001 |
| 6306262 | Suction box in a paper machine Suction box in a paper machine including a vacuum chamber, a deck or a number of substantially U-section holders open toward a wire and ribs arranged in the deck or the holders so that they can be loaded against the wire. At least in a running situation, ... | 10/23/2001 |
| 6235158 | Suction forming roll n double screen method and machine for the manufacture of a fibrous material web 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 anothe... | 05/22/2001 |
| 6221215 | Suction device and process for conditioning and/or drainage of an endless felt Suction device and process for at least one of conditioning and drainage of an endless felt. The device includes a housing having at least one vacuum chamber, and a plurality of suction slits located on a suction surface of the housing that is adapted to ... | 04/24/2001 |
| 6203666 | Method and device for paper web manufacturing In the present invention, in a process in which a fiber suspension supplied in a flat layer manner is subjected to natural dehydration, pressure dehydration, or suction dehydration, while circulating a cylindrical suction cylinder, and thereby, dehydratio... | 03/20/2001 |
| 6146500 | Suction breast roll former and method, with flexible headbox roof A suction breast roll former has a support surface with a plurality of apertures formed therein that are operatively connected to a vacuum source. A headbox has a flexible roof extending downstream from a slice opening and disposed adjacent to a support s... | 11/14/2000 |
| 6132559 | Method and device for dewatering a paper or board web and passing the web into a press section A method and device for dewatering a paper or board web and passing the web as a closed draw from a lower wire of a web forming section, in which the web is formed between the lower wire and an upper wire, to the press section and through one or more dewa... | 10/17/2000 |
| 6090243 | Process for preparing a web of paper fibers Improved method of removing water from a wet web of paper includes the steps of (a) passing the web and its supporting fabric above and in sliding contact with a surface of a meniscus separator unit having a plurality of spaced cells in contact with the i... | 07/18/2000 |
| 6083447 | Method for molding articles from a fibrous slurry An apparatus and method for molding articles from a fibrous slurry. The apparatus comprises a forming die manufactured from a water insoluble, porous, relatively rigid and easily shaped material having molding surface shaped to the contour of the article ... | 07/04/2000 |
| 6071381 | Method and arrangement in a web former for preventing rewetting of a web The invention relates to a method for preventing rewetting of a web in a former. Water is removed from the web (W) by means of dewatering members. The web (W) is formed by forming members and forming rolls on support of a wire loop/loops. The wire loop/lo... | 06/06/2000 |
| 5833805 | Composite hollow moulded panels and methods of manufacture A unique method of producing a reinforced moulded sheet having one continuously planar face and having a plurality of ribs or thickened areas which provide a corresponding plurality of prominences directed outwardly of the other face, said prominences hav... | 11/10/1998 |
| 5833809 | Twin-wire former A twin-wire former of a paper machine, for high speed paper machines whose web running speed is of an order of from about 1600 m/min to about 2500 m/min. The former includes a carrying wire guided in a loop and a covering wire guided in a loop to define a... | 11/10/1998 |
| 5830322 | Velocity induced drainage method and unit A drainage device and method which provides for drainage from paper or pulp stock on a fabric in a sheet or mat making machine which includes a primary blade and trail blade with a gap therebetween for drainage wherein the size of the gap controls drainag... | 11/03/1998 |
| 5720853 | Method and apparatus for sheet formation In a method for forming a sheet from a fiber-water suspension, the fiber-water suspension is supplied on a traveling bottom wire at a first zone thereof to dewater the fiber-water suspension. Subsequently, the suspension is introduced between the bottom w... | 02/24/1998 |
| 5695612 | Method and press for pressing a paper web A prepress for a paper web in a paper machine including a load shoe which is pressed against a backing element, preferably a vacuum roll, by a load pressure generating by a medium, preferably liquid, which at the same time acts as a lubrication medium in ... | 12/09/1997 |
| 5647958 | Wire part of a machine for the manufacture of fibrous material webs A wire part of a machine for the production of continuous fibrous material webs, especially a papermaking machine, includes two continuous wire belts which together form a twin-wire zone. At least one supporting element having a supporting surface is disp... | 07/15/1997 |
| 5641402 | Multistage disc filter A disc filter used in the pulp and paper industry meets modern requirements by axially dividing the tank and shaft (with the flow channels) into at least two separate and distinct portions, so that the treatment of pulp in several different stages using t... | 06/24/1997 |
| 5466341 | Method for draining water from a paper web A suction roll for a paper machine in which a stationary suction shoe is arranged inside a revolving mantle loop and is connected to a source of negative pressure. The mantle loop is a substantially water-receiving and permeable fabric-sock loop that rece... | 11/14/1995 |
| 5393382 | Method for forming and dewatering a web on a fourdrinier fabric Improved system for controlling the forming and dewatering of a web of paper by submerged drainage in which air does not penetrate the fiber/aqueous dispersion and the formed web. The dewatering is via altering the natural tension of the meniscus of the w... | 02/28/1995 |
| 5389207 | Apparatus for controlling the dewatering of a web in a fourdrinier fabric Improved apparatus for controlling the dewatering of a web (44, 44') in a Fourdrinier fabric (20, 21) by submerged drainage apparatus in which air does not penetrate through the fiber/aqueous dispersion nor the formed web (44, 44'). The dewatering is acco... | 02/14/1995 |
| 5320713 | Method of using a forming section of a papermaking machine In order to regulate dewatering of the fiber suspension and the formation of the paper web between the upper and lower wires of the papermaking machines, upper ledges are provided along with the upper wire. These upper ledges are particularly constructed ... | 06/14/1994 |
| 5250153 | Method for manufacturing a mineral wool panel The manufacture of sag-resistant, lightweight structural mineral panels on a foraminous support wire is accomplished by forming a dilute aqueous dispersion of mineral fiber and/or aggregate and an anionically stabilized latex binder, coupling the binder s... | 10/05/1993 |
| 5196090 | Method for recovering pulp solids from whitewater using a siphon Method of feeding separate streams of (1) an aqueous dispersion of pulp and (2) white water from a paper making process into a wedge-shaped space between horizontal travelling upper and lower converging wire meshes, applying a siphon means to the upper wi... | 03/23/1993 |
| 5135614 | Suction roll for a paper making machine and a method for producing a desired pressure profile for the suction roll The invention concerns a suction roll (10) for a paper making machine, on which the paper web is pressed towards the outer face of the roll mantle. The suction roll (10) is divided, in the axial direction of the roll, into at least three vacuum spaced (A | 08/04/1992 |
| 5013405 | Method of making a low density frothed mineral wool A method for the manufacture of very low density mineral wool structural panels on a moving foraminous support wire by frothing a dilute aqueous dispersion of mineral wool is disclosed. The forth, a mass of delicate, non-resilient and non-uniform bubbles ... | 05/07/1991 |
| 4964956 | Method of and a device for leading a web moving between two wires on to a desired wire A method of and an arrangement for leading a web on to a desired wire in a paper machine or the like. When the web moves between two wires, it is transferred on to one wire after the wires have moved in parallel over a distance with the web therebetween m... | 10/23/1990 |
