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| Number | Title | Issue Date |
| 8123912 | Screen The present invention relates to a method for the production of a screen and to a screen for the treatment of a fibrous material suspension suitable for the production of a fibrous material web, the screen including at least two screen layers that are connected to e... | 02/28/2012 |
| 8048273 | Arrangement for treatment of cellulose pulp A washer for washing and dewatering of cellulose pulp is disclosed, comprising a rotatable drum with a plurality of outer compartments for the pulp to be washed defined by axial compartment walls distributed along the circumference of the drum, a stationary cylindri... | 11/01/2011 |
| 8048272 | Arrangement for the treatment of cellulose pulp involving seal positioning means A washer for washing and dewatering cellulose pulp is disclosed, comprising a rotary drum with a plurality of external compartments on the drum defined by axial compartment walls distributed along the circumference of the drum, a stationary cylindrical casing enclos... | 11/01/2011 |
| 8025772 | Method for degassing and supplying a fibrous suspension to a headbox or a filter device and degassing device Degassing device that includes a housing, a rotor having a rotatable interior arranged within the housing, an inlet for adding a liquid to be degassed, the inlet being structured to open into the interior of the rotor, and an outflow for a degassed liquid. A degassi... | 09/27/2011 |
| 7879196 | Tank assembly for making fibre products from stock The present invention relates to a tank assembly for making fiber products from stock comprising a stock vat, a main tank (2, 103, 202), at least one inlet (20, 21, 111, 216) to said main tank from said stock vat, and an outlet (22, 113, 217) fr... | 02/01/2011 |
| 7820013 | Screen cylinder A screen cylinder comprising screen slots (3) and accept channels (8) for directing the portion penetrated the screen slots (3) to an accept side (9) of the screen cylinder (1) of the fiber pulp suspension fed into a feed side (... | 10/26/2010 |
| 7407563 | Apparatus and method in the treatment of the stock passed to a headbox of a paper machine or equivalent An apparatus in the treatment of stock passed to a headbox of a paper machine or equivalent includes at least two stock chests (10a1, 10a2). Stock (M1) from a first stock chest (10a1 | 08/05/2008 |
| 7381295 | Pulp fractionation using centrifugal cleaners and power screens with multi-layer headbox and deaeration tank Virgin stock is conducted to a paper or board machine and further to a centrifugal cleaner installation (12) into its first centrifugal cleaner step (12a1). From the first centrifugal cleaner step (12a1) the a... | 06/03/2008 |
| 7318883 | Equipment and method in a paper or board machine for mixing of fresh stock and of water for dilution of fresh stock The invention concerns an equipment and a method in a paper or board machine for mixing fresh stock (M) with water (V) used for dilution of the fresh stock. At the point of mixing (K) of the dilution water (V) and the fresh stock (M) passed from the pipe (13)... | 01/15/2008 |
| 7294226 | Method of removing high density stickies from secondary papermaking fibers A hybrid method for processing papermaking fibers to remove high density stickies typically includes utilizing a multistage array of forward cleaners coupled with a flotation cell which increases overall efficiency of the system. In a preferred embodiment, a first r... | 11/13/2007 |
| 7229527 | Method for the controlled thickening of low consistency fiber suspensions The present invention relates to the thickening of pulp suspensions. A low consistency pulp suspension is fed to a pre-thickener (10) through an inlet conduit (18). A layer of thickened pulp, formed on a filter surface (22), is pushed along the ... | 06/12/2007 |
| 7101418 | Method and device for degassing a suspension, specifically a fiber stock suspension The invention relates to a method and a device for degassing of suspension, specifically fiber stock suspension. The method according to the invention is characterized in that separated excess suspension is discharged sideways through an overflow having an overflow ... | 09/05/2006 |
| 7063770 | Method of removing high density stickies from secondary papermaking fibers A hybrid method for processing papermaking fibers to remove high density stickies typically includes utilizing a multistage array of forward cleaners coupled with a flotation cell which increases overall efficiency of the system. In a preferred embodiment, a first r... | 06/20/2006 |
| 6986832 | Arrangement for mixing flows in papermaking process The invention relates to a method and a mixer for mixing flows of a papermaking process. In the invention, a first flow is conveyed through a tube, and turbulence is generated in it by means of form parts located on the inner periphery of the tube. The mixing zone o... | 01/17/2006 |
| 6950777 | Method and system for assessing pulp and paper mill performance A system and method is provided for analyzing data obtained during manufacture of a web of paper or paperboard on a machine. The system comprises a computer including a database module, a statistical analysis module, and a processor for executing the modules. The da... | 09/27/2005 |
| 6869504 | Apparatus for passing stock into a headbox of a paper machine or equivalent A vacuum pump (P0) provides vacuum to a paper machine deaeration tank (11) which has an inlet duct (10) through which the tank is supplied with wire water. A discharge duct (12) extends from the deaeration tank (11). There is a... | 03/22/2005 |
| 6868973 | Drum type refining or washing apparatus The present invention provides a drum type refining or washing apparatus in which the refining or washing efficiency of a pulp suspension or a food suspension is remarkably enhanced by the filtration function of a rotary drum and by the filtrate sucking force of a f... | 03/22/2005 |
| 6746572 | Method for determining a characteristic value for the binding force potential of suspended paper fibers and use of this method Method for determining a characteristic value for a binding force potential of paper fibers in a fibrous suspension. The method includes measuring an air content of the fibrous suspension and deriving the characteristic value from the measuring. ... | 06/08/2004 |
| 6733629 | Method of controlling the operation of an approach system of a paper machine or the like web formation apparatus The present invention relates to a method and apparatus for controlling the operation of an approach system of a paper machine or the like web formation apparatus. Especially preferably the method of controlling the operation of an approach system according to the i... | 05/11/2004 |
| 6730193 | Wire pit The present invention relates to a wire pit. A characteristic feature of the wire pit (50) according to the invention is that its wall/walls (52′, 52″, 54′, 62) converge downwards so that the average flow direction of the liquid along the most pa... | 05/04/2004 |
| 6638394 | Method and apparatus for discharge of whitewater In a method and an associated apparatus for discharging the whitewater from inside the loop of a continuous dewatering wire of a former, specifically a twin wire former in a paper machine the accumulating whitewater is collected by a collection tank, whic... | 10/28/2003 |
| 6571957 | Screening apparatus for fiber suspension A screening apparatus for screening acceptable and rejectable material from a pressurized fiber suspension includes a housing and a rotor within the housing. The rotor has a top end. A screen basket is positioned generally concentrically around the rotor.... | 06/03/2003 |
| 6521096 | Screen and method for manufacturing a reinforcement element for a screen plate A screen, such as a drum screen or a flat screen, for screening or fractionizing pulp suspensions or the like suspensions of the pulp and paper industry. The screen comprises a reinforcement attached to the surface of the screen plate, such as a reinforci... | 02/18/2003 |
| 6425986 | Process for degassing a paper stock suspension Process and apparatus for degassing a flowing fibrous paper suspension. The process includes separating the suspension into partial streams, spraying the partial streams into a degassing chamber under vacuum, and exposing the suspension to the degassing v... | 07/30/2002 |
| 6416632 | Apparatus for degassing an aqueous suspension containing pulp fibers An apparatus for degassing an aqueous suspension containing pulp fibres, the apparatus comprising an elongated horizontal reservoir and a bypass manifold extending into the reservoir. The bypass manifold is placed inside the reservoir such that it it posi... | 07/09/2002 |
| 6395132 | Washing system and washer for a fiber suspension A washing system for washing a fiber suspension associated with a fiber stock preparation system, includes a plurality of rolls and a porous fabric carried by the plurality of rolls in a closed loop. The closed loop includes a lower run defining a washing... | 05/28/2002 |
| 6284096 | Process for discharging impurities from a hydrocyclone and a hydrocyclone A hydrocyclone and a process for discharging impurities from a suspension containing paper fibers using a hydrocyclone having a radially inner area. The hydrocyclone includes an inflow for introducing the suspension to be purified, an accepted stock outfl... | 09/04/2001 |
| 6238523 | Decontamination apparatus The present invention provides an apparatus for decontaminating aqueous paper pulp, the apparatus comprising a decontaminating cell (12). The decontaminating cell (12) has an upper light contaminate collection hood (30) and/or a lower heavy contaminate co... | 05/29/2001 |
| 6171448 | Apparatus for screening waste paper pulp A casing has a pulp slurry inlet, a reject outlet and an accept stock outlet and accommodates a rotor. The rotor has a hollow cylinder with scraper blades at its outer periphery. A screen plate is disposed outside of the scraper blades to provide between ... | 01/09/2001 |
| 6136150 | Method and device achieveing a flow of stock in a forming tank The invention relates to a method and an arrangement for producing a flow of stock in a moulding tank (1). In this, stock is pumped into the moulding tank (1) at the bottom (1a) and allowed to flow up over the brim (1b) thereof. During its rise in the mou... | 10/24/2000 |
| 6096120 | Deaeration vessel An improved double acting deaeration vessel is most desirably used in the pulp and paper industry. The deaeration vessel removes gas from a fiber suspension without requiring fine adjustment of the final consistency of the suspension fed to the deaeration... | 08/01/2000 |
| 6051103 | Paper-making screen apparatus A paper-making screen apparatus for separating foreign matters from paper-making raw materials is formed of a screen having a first annular end plate located at an end; a second annular end plate located at the other end thereof, having a plurality of ope... | 04/18/2000 |
| 5997693 | Stock liquor pressure pulsation absorbing apparatus and method A stock liquor pressure pulsation absorbing apparatus of an active type is able to absorb pressure pulsations in an ordinarily demanded frequency range of 0.01 to 100 Hz. A by-pass pipe (2) extracts a portion of a stock liquor from a master pipe (1) for s... | 12/07/1999 |
| 5901585 | Drum supported by support rollers for washing fibre material Apparatus for treating pulp, comprising a stand (1); a rotatably mounted drum (3); feeding and discharging members (6, 8) for the pulp; a wall member (2) which surrounds the jacket (40) of the drum in order to delimit therebetween a material space (5) wit... | 05/11/1999 |
| 5900123 | Device for distributing liquid, especially washing liquid, for washing paper pulp The present invention relates to a device for distributing liquid, especially washing liquid for washing paper pulp, in a diffuser having at least one screen plate (1), comprising an apparatus for supplying the washing liquid and at least one elongated no... | 05/04/1999 |
| 5888353 | Flatsided parabolic header for headboxes For distributing stock evenly across the face of a tube bank in a papermaking machine, the stock supply header has an increasing change in cross-sectional area per unit width traveling from the inlet end to the recirculation end of the header. The header ... | 03/30/1999 |
| 5868905 | Paper-making machine including a deaerator for a fiber suspension The invention is directed to a paper-making machine for making a paper web from a fiber suspension. The paper-making machine includes a headbox having an entrance, a fluid conduit connected to the headbox entrance, and a deaeration device with an exit con... | 02/09/1999 |
| 5798025 | Apparatus for screening waste paper pulp Separation and discharge of contaminants and defibration of undefibered waste paper can be effected in a single apparatus which has a generally cylindrical casing, a rotor concentrically arranged in the casing and a cylindrical main screen plate concentri... | 08/25/1998 |
| 5785815 | Process for damping pressure pulsations and apparatus for performing the process Process for damping pressure pulsations and apparatus for performing the process. The process of this invention serves for the damping of pressure pulsations in a fluid, particularly a fiber suspension, flowing in a closed system wherein the pressure puls... | 07/28/1998 |
| 5681427 | Apparatus for treating pulp produced by solvent pulping An apparatus and process for the solvent pulping and washing of pulp using vessels purged of oxygen free gas when the process is arrested or terminated. The washing is accomplished by first continuously passing the pulp to a pressure diffuser, then to a f... | 10/28/1997 |
