Combined Patents (Class 162/381)
  • Patent number: 8753482
    Abstract: A sheet formation section of a paper machine includes a sensor that measures a first characteristic of a sheet of paper being formed. The sensor may measure a characteristic such as streaking, rises, depressions, or smoothness. The sheet formation section also includes an apparatus that applies a magnetic field to the sheet of paper being formed. The machine also includes a controller that causes the apparatus to apply the magnetic field in response to a signal from the sensor representative of the first characteristic. The magnetic field transforms a second characteristic of the sheet of paper. The apparatus may transform a characteristic such as water content or fiber orientation.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: June 17, 2014
    Assignee: Honeywell International Inc.
    Inventor: Christopher Thomas Byrd
  • Publication number: 20130192775
    Abstract: A washer press apparatus for washing and dewatering a wide range of solids concentrations of pulp in liquid suspensions includes multiple distinct displacement wash zones about a drum with multiple nips.
    Type: Application
    Filed: January 7, 2013
    Publication date: August 1, 2013
    Applicant: Andritz Inc.
    Inventor: Andritz Inc.
  • Publication number: 20100126686
    Abstract: An apparatus in connection with wire water treatment in the approach system of a paper machine, board machine or corresponding web formation machine, which apparatus includes a deaeration tank connected to devices for generating a vacuum inside the deaeration tank. At least one wire water feed pipe extends into the tank, which pipe opens into a vacuum space above the liquid surface level in the tank. A wire water discharge duct is connected to the bottom part of the tank. The feed pipe extends above the liquid level in the tank so that the wire water overflows the edge of the feed pipe onto the liquid level in the tank and the wire water discharge conduit extends downward and is connected to a pump.
    Type: Application
    Filed: April 2, 2008
    Publication date: May 27, 2010
    Applicant: ANDRITZ OY
    Inventors: Jouni Parviainen, Ari Pelkiö, Ari Vilpponen
  • Publication number: 20090272508
    Abstract: A sheet formation section of a paper machine includes a sensor that measures a first characteristic of a sheet of paper being formed. The sensor may measure a characteristic such as streaking, rises, depressions, or smoothness. The sheet formation section also includes an apparatus that applies a magnetic field to the sheet of paper being formed. The machine also includes a controller that causes the apparatus to apply the magnetic field in response to a signal from the sensor representative of the first characteristic. The magnetic field transforms a second characteristic of the sheet of paper. The apparatus may transform a characteristic such as water content or fiber orientation.
    Type: Application
    Filed: April 30, 2008
    Publication date: November 5, 2009
    Applicant: Honeywell International Inc.
    Inventor: Christopher Thomas Byrd
  • Publication number: 20090272504
    Abstract: A method for the integrated cleaning of a paper-pulp processing plant including one or more high density cleaners comprising the steps of supplying the rejected flow (10) from one of the high density cleaners to a screening centrifugal separator (11); screening out contaminants in the separator (11) using a screen hole size of less than 3.5 mm; thickening any fibrous material accepted by the separator (11) and returning same to stock being processed in the processing plant; and recovering liquid (B) from any material (A) rejected by the separator (11) prior to disposing of the material. The invention further comprises an apparatus for performing the method.
    Type: Application
    Filed: April 24, 2009
    Publication date: November 5, 2009
    Applicant: Industrial Technology & Services LLC
    Inventor: Francis Mondon
  • Patent number: 7192506
    Abstract: A dry end of a tissue machine is made shorter by close-coupling a reel-up to the drying section and supporting the web from the drying section to the reel-up by a foil or a belt such that web stability is maintained, thus allowing high-speed operation. The foil's downstream edge can form a nip with the paper roll and nip load can be controlled by controlling pivotal movement of the foil. The reel-up can include a calendering belt for calendering the web as it passes through a nip between the belt and a reel drum supported on the belt, and a rotatable reel spool on which a paper roll is wound in nipping engagement with the reel drum. Alternatively, the reel drum can be eliminated and the paper roll can be supported on the belt. A composite shaftless core for winding is also disclosed.
    Type: Grant
    Filed: October 10, 2003
    Date of Patent: March 20, 2007
    Assignee: Metso Paper Karlstad AB
    Inventor: Anders Tommy Lindén
  • Patent number: 7101418
    Abstract: 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 edge that is located in the tank outside wall and is positioned parallel to the tank axis. The device according to the invention is characterized in that the overflow includes at least one overflow having an overflow edge that is located in the tank outside wall and is positioned parallel to the tank axis and that at least one overflow system, for the purpose of discharging the separated excess suspension, is located following the overflow.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: September 5, 2006
    Assignee: Voith Paper Patent GmbH
    Inventor: Karl-Heinz Beuermann
  • Patent number: 6986832
    Abstract: 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 of the mixer comprises feed openings on the inner periphery of the tube for feeding a second flow from a feed channel outside the tube into the first flow, whereby the flows are mixed as a result of the turbulence generated by the form parts. According to a preferred embodiment of the invention, at least one form part comprises a feed opening.
    Type: Grant
    Filed: February 19, 2002
    Date of Patent: January 17, 2006
    Assignee: Metso Paper Inc.
    Inventors: Perttu Lamminen, Matti Hietaniemi, Juhani Sams, Kati Lindroos
  • Patent number: 6749723
    Abstract: A property of a paper web is measured using one or more reflectance measurement sensors emitting measuring beams onto the web and receiving the beams reflected from the web, from which the web property is deduced. The web is supported on a web support during the measurement, such as on a passive or active airfoil or fabric. One or more measurement sensor(s) can be integrated within an active airfoil, and can comprise a plurality of optical fibers having sensing ends arranged in the airfoil such that the sensing ends of the fibers face the moving paper web through one or more apertures in a web-supporting panel of the airfoil. Alternatively, a traversing sensor can be mounted within the airfoil. Other embodiments include a reflectance sensor mounted adjacent an airfoil or other web support such as a through-air drying fabric or a support belt for the web.
    Type: Grant
    Filed: August 8, 2002
    Date of Patent: June 15, 2004
    Assignee: Metso Paper Karlstad AB
    Inventor: Anders Tommy Lindén
  • Patent number: 6733631
    Abstract: A non-woven web of fibrous material is produced using a moving foraminous element in the practice of the foam process. A first foam slurry of air, water, fibers and a surfactant is generated and centrifugally pumped into contact with the moving foraminous element. Substantially fiber-free foam is withdrawn from the foraminous element while forming a non-woven web of fibrous material on the foraminous element, and at least a part of the substantially fiber-free foam is used in the generation of the first foam slurry. Recycling is also typically practiced using a centrifugal pump, and the centrifugal pumps are preferably degassing pumps which remove some of the gas from the foam. By practicing the invention it is possible to produce fibrous webs using the foam process that are more than two meters wide, and at a forming speed of more than about 100 m/min (e.g. about 200-500 m/min).
    Type: Grant
    Filed: May 8, 2003
    Date of Patent: May 11, 2004
    Assignee: Ahlstrom Glassfibre Oy
    Inventors: Jorma Elonen, Kay Rokman, Arto Koso, Juhani Jansson
  • Patent number: 6669818
    Abstract: A dry end of a tissue machine is made shorter by close-coupling a reel-up to the drying section and supporting the web from the drying section to the reel-up by a foil or a belt such that web stability is maintained, thus allowing high-speed operation. The foil's downstream edge can form a nip with the paper roll and nip load can be controlled by controlling pivotal movement of the foil. The reel-up can include a calendering belt for calendering the web as it passes through a nip between the belt and a reel drum supported on the belt, and a rotatable reel spool on which a paper roll is wound in nipping engagement with the reel drum. Alternatively, the reel drum can be eliminated and the paper roll can be supported on the belt. A composite shaftless core for winding is also disclosed.
    Type: Grant
    Filed: June 15, 2001
    Date of Patent: December 30, 2003
    Assignee: Metso Paper Karlstad AB
    Inventor: Anders Tommy Lindén
  • Patent number: 6569287
    Abstract: The present invention relates to a system and method of making paperboard and paperboard corrugation that negates the steps of winding rolls of containerboard on machine reels of separate paper machines, subsequent rewinding and slitting of paperboard and unwinding rolls of containerboard on separate corrugators.
    Type: Grant
    Filed: December 11, 2000
    Date of Patent: May 27, 2003
    Assignee: The Hoffman Group, Ltd.
    Inventor: Roger P. Hoffman
  • Publication number: 20020121350
    Abstract: 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 of the mixer comprises feed openings on the inner periphery of the tube for feeding a second flow from a feed channel outside the tube into the first flow, whereby the flows are mixed as a result of the turbulence generated by the form parts. According to a preferred embodiment of the invention, at least one form part comprises a feed opening.
    Type: Application
    Filed: February 19, 2002
    Publication date: September 5, 2002
    Applicant: Metso Paper Inc.
    Inventors: Perttu Lamminen, Matti Hietaniemi, Juhani Sams, Kati Lindroos
  • Patent number: 6425986
    Abstract: 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 vacuum for at least 10 seconds. In this manner, gas within the suspension is separated from the suspension. The process also includes suctioning the separated gas out of the degassing chamber. The apparatus includes a degassing chamber structured to subject the suspension to a vacuum sufficient for degassing, an element arranged at an inlet of said degassing chamber for dividing the suspension into a plurality of partial streams, and a suction device for removing separated gas from said degassing chamber. The apparatus is structured and arranged so that the suspension is subjected to the degassing vacuum for a duration of at least 10 seconds.
    Type: Grant
    Filed: October 27, 2000
    Date of Patent: July 30, 2002
    Assignee: Voith Sulzer Papiertechnik Patent GmbH
    Inventors: Anton Gmeiner, Michael Schwarz
  • Patent number: 6425981
    Abstract: An apparatus and associated method for drying a wet web of paper comprising a drying section for increasing the dry solids content of a wet web of paper, a cleaning section disposed at least not above the drying section, and a continuous drying fabric forming a loop at least about the drying section and the cleaning section. The fabric receives the web along an upper portion of the loop before the drying section, wherein the web is supported on an upper surface of the fabric. The fabric then transports the web through the drying section in a non-inverting web run to increase the dry solids content of the web before the web is separated from the fabric. Once web is separated from the fabric, the fabric travels through the cleaning section to be cleaned before returning to receive more of the wet paper web thereon.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: July 30, 2002
    Assignee: Metso Paper Karlstad Aktiebolg (AB)
    Inventor: Dennis E. Jewitt
  • Patent number: 6402892
    Abstract: In a method at the end of the drying section of a paper machine, drying cylinders (1, 2) are arranged in two substantially horizontal cylinder rows, wherein the first drying cylinders (1) are placed substantially higher than the second drying cylinders (2). In the method, the web (W) to be dried is conveyed alternately between the cylinder rows of the drying cylinders (1, 2). Further in the method, the transfer of the web (W) between the drying cylinders (1, 2) is supported by a wire run arrangement, and the web is guided after the last drying cylinder (1, 2) of the drying section (A) by a transfer arrangement in between the rolls of a pair of rolls in the calender section (B) of the paper machine.
    Type: Grant
    Filed: May 22, 2000
    Date of Patent: June 11, 2002
    Assignee: Valmet Corporation
    Inventors: Jukka Kilpiä, Robert Baril
  • Patent number: 6383337
    Abstract: A papermaking machine and a method for applying an application medium to a moving web of material in a papermaking machine. The papermaking machine has a wet end section, a press section, a drying section and an applying device for applying a medium to a moving web of material. The wet end section includes a twin wire area having a first wire and a second wire wherein the web of material is formed and positioned between the two wires and separated from the two wires before moving to the press section. At least one wet end section applying device is positioned on one side of at least one of the first wire or the second wire within the twin wire area and facing away from the web of material positioned on the wires. The press section of the papermaking machine has a first press element and at least one press section applying device facing directly toward the web of material.
    Type: Grant
    Filed: June 22, 1999
    Date of Patent: May 7, 2002
    Assignee: Voith Sulzer Papiertechnik Patent GmbH
    Inventors: Albrecht Meinecke, Volker Schmidt-Rohr, Ingolf Cedra
  • Patent number: 6372094
    Abstract: A pulp drying line which comprises a pulp press for pre-drying the pulp and a defibrator for shredding the pre-dried pulp into a loose pulp. The drying line further comprises a web forming section and a pulp dryer section. The loose pulp coming from the defibrator is spread in the web forming section in a layer on an air-permeable forming base, from which the air-permeable pulp web thus formed is taken through the dryer section supported by an air-permeable support fabric, such as a wire. The pulp is not formed into a pulp web during pre-drying.
    Type: Grant
    Filed: October 17, 2000
    Date of Patent: April 16, 2002
    Assignee: Metso Paper, Inc.
    Inventors: Pertti Heikkilä, Paavo Sairanen
  • Patent number: 6267845
    Abstract: A process arrangement for the short circulation in a paper or board machine including stock chests for component stocks, metering pumps for component stocks, cleaning devices, pumps, a headbox and a wire section as well as a system of pipes connecting these elements, together with regulation devices. After the metering pumps, the component stock flows are passed into a closed mixing volume in which the component stocks are mixed and diluted with a first dilution water flow. From this closed mixing volume, the stock is passed in a closed space by a first feed pump of the main line of the process through a screen and a centrifugal cleaner to the suction side of a second feed pump of the main line, where a second dilution water flow is passed to the stock. The second feed pump feeds the stock through a machine screen to the inlet header in the headbox.
    Type: Grant
    Filed: June 10, 1999
    Date of Patent: July 31, 2001
    Assignee: Valmet Corporation
    Inventors: Jouko Hautala, Timo Pekkarinen, Antti Suonperä, Juha Kinnunen, Mari Silanterä, Lauri Verkasalo
  • Patent number: 6210534
    Abstract: A paper-making machine for making a fiber web, includes a wire for carrying the fiber web. A trim squirt includes a nozzle cutter and an accumulator tank. The nozzle cutter is directed toward and transverse to the wire. The accumulator tank includes an inlet for receiving a pressurized fluid and an outlet fluidly connected with the nozzle cutter. The tank is structured and arranged to define an air attenuation pad therein.
    Type: Grant
    Filed: May 12, 1999
    Date of Patent: April 3, 2001
    Assignee: Voith Sulzer Paper Technology North America, Inc.
    Inventor: Edwin X. Graf
  • Patent number: 6159343
    Abstract: A press-to-dryer apparatus is disclosed for pressing and drying a web of paper. The apparatus includes a press for pressing the web of paper and a dryer disposed downstream relative to the press for drying the web. The dryer includes an unfelted drying cylinder disposed immediately downstream relative to the press. The arrangement is such that the web extends from the press to and around the drying cylinder. The dryer also includes a heater which cooperates with the unfelted drying cylinder such that the web is disposed between the drying cylinder and the heater for heating and drying the web. The dryer also includes a single-tier drying section which is disposed downstream relative to the unfelted drying cylinder for completing the drying of the web.
    Type: Grant
    Filed: July 8, 1998
    Date of Patent: December 12, 2000
    Assignee: Beloit Technologies, Inc.
    Inventor: Rajendra D. Deshpande
  • Patent number: 5868905
    Abstract: 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 connected to the fluid conduit. The deaeration device includes a housing and a pipe. The housing including an inner surface defining an inner chamber. The pipe is disposed at least partially within the housing and is configured to receive the fiber suspension. The pipe has a plurality of outlets disposed within the inner chamber of the housing. Each of the outlets is configured to output a stream of the fiber suspension against and at an acute angle relative to the inner surface of the inner chamber. A vacuum source is connected to the housing and is in fluid communication with the inner chamber.
    Type: Grant
    Filed: April 23, 1997
    Date of Patent: February 9, 1999
    Assignee: Voith Sulzer Paper Technology North Amrica Inc.
    Inventors: Edwin X. Graf, Clark J. Krystek
  • Patent number: 5820830
    Abstract: An integrated flue gas treatment and condensing heat exchanger is used to scrub sulfur dioxide from the flue gas produced by a power boiler used in a paper mill operating a kraft process. Sensible and latent heat from the flue gas is recovered and the condensate effluent from the condensing heat exchanger contains valuable chemicals that are returned to and used in the kraft process.
    Type: Grant
    Filed: April 10, 1997
    Date of Patent: October 13, 1998
    Assignee: The Babcock & Wilcox Company
    Inventors: Robert A. McIlroy, William Downs, Daniel R. Rowley, Karl H. Schulze, Dennis W. Johnson, Jean Czuczwa
  • Patent number: 5632848
    Abstract: A continuous manufacturing line for preparing gypsum fiberboard is provided. The manufacturing line includes equipment for admixing hydratable gypsum, paper, and a quantity of water to form a substantially homogenous slurry, dewatering apparatus for removing a portion of the excess water from the slurry to produce a substantially continuous wet web, pressing equipment for configuring the wet web with a compression means to form a substantially continuous green board, a cutting station for cutting the substantially continuous green board into individual uncured lengths, and a heating station for curing the individual uncured lengths to form gypsum-dihydrate-containing fiberboards.
    Type: Grant
    Filed: February 16, 1995
    Date of Patent: May 27, 1997
    Assignee: Georgia-Pacific Corporation
    Inventors: Turner W. Richards, Hubert C. Francis, George F. Fowler, Dale R. Greve, Edward M. Rigby
  • Patent number: 5082724
    Abstract: A photographic support consisting essentially of base paper and a polyolefin resin with which both sides of the base paper are coated, the base paper having a standard deviation of the weight variation caused by a wire mark formed on the base paper of 1.0 g/m.sup.2 or less and a standard deviation of the weight variation caused by the dispersibility of pulp fiber composing the base paper of 8.0 g/m.sup.2 or less. The photographic support has an excellent smoothness.
    Type: Grant
    Filed: February 6, 1990
    Date of Patent: January 21, 1992
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Toru Katsura, Hiroo Kaji
  • Patent number: 4793899
    Abstract: A coating press apparatus is disclosed for coating a first and second side of a pressed web formed in a forming section of a papermaking machine. The apparatus includes a first press roll which defines a smooth imperforate first surface. The first surface cooperates with the first side of the web. A first backing roll cooperates with the first press roll for defining therebetween a first nip for the passage therethrough of the web. A first felt supports the web during passage through the first nip and a first short-dwell coater applies a coating directly to the surface of the first press roll upstream relative to the first nip such that a smooth and even first layer of the coating substance is applied to the first side of the web during passage of the web through the first nip.
    Type: Grant
    Filed: July 23, 1987
    Date of Patent: December 27, 1988
    Assignee: Beloit Corporation
    Inventor: Borgeir Skaugen
  • Patent number: 4249993
    Abstract: In a paper machine the couch roll gear drive is provided with eccentric adjustment to one of the gear support bearings, thereby permitting the setting and adjustment of the gear under working conditions, to provide satisfactory gear face contact.A tapered housing interface fitted with a hydraulic jack-off provision ensures tight fitting of the bearing with its support housing, while permitting ready access for adjustment and lock-up, at very low cost.
    Type: Grant
    Filed: May 30, 1979
    Date of Patent: February 10, 1981
    Assignee: Dominion Engineering Works Limited
    Inventors: Wilhelmus J. Stegelitz, George P. Bernreiter
  • Patent number: 3954554
    Abstract: A method and apparatus for making a multi-ply paper sheet wherein a first web is formed by wet-laying fibres and a second web is formed by dry-laying fibres, the two webs being combined to form a multi-ply sheet and wherein the dry-laid web is produced by depositing dry fibres on a supporting band and consolidating the web by hot moist pressing before transferring to the first wet-laid web.
    Type: Grant
    Filed: August 21, 1973
    Date of Patent: May 4, 1976
    Assignee: Karl Kroyer St. Anne's Limited
    Inventors: Harold George Curry, Brian William Attwood, Derek Graham Walter White