Apparatus Repair, Cleaning Or Conditioning Patents (Class 162/272)
  • Patent number: 10487451
    Abstract: Methods of cleaning papermaking fabrics are disclosed. Cleaning compositions for cleaning papermaking fabrics are also disclosed.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: November 26, 2019
    Assignee: WEST END PRODUCTS, LLC
    Inventors: Dennis Z. Lasik, William F. Mullen
  • Patent number: 10364530
    Abstract: A below-web dust hood for a papermaking system. The hood body has the general shape of a tapering trapezoidal pyramid, taller at one end than the other. The inlet of the hood body tapers inversely in height—broader where the hood body is shorter, and narrower where the hood body is taller in order to maintain uniform flow across the entire inlet.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: July 30, 2019
    Assignee: Brunn Air Systems, Inc.
    Inventors: John Kelyman, Anthony York
  • Patent number: 10364531
    Abstract: A dust hood for a papermaking system. The hood body has a roof and depending long sidewalls. An inlet extends substantially the entirety of each of the long sidewalls. The hood includes an outlet at one end. The roof is peaked and reaches a peak line. The hood may be positioned at or near floor level and used with air ramps that drive dust toward the inlets.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: July 30, 2019
    Assignee: Brunn Air Systems, Inc.
    Inventors: John Kelyman, Anthony York
  • Patent number: 10246827
    Abstract: An upper reel hood in dust control system for the “dry” side of a through-air drying (TAD) papermaking system. The hood body has the general shape of a tapering trapezoidal pyramid, taller at one end than the other. The inlet of the hood body tapers inversely in height—broader where the hood body is shorter, and narrower where the hood body is taller in order to maintain uniform flow across the entire inlet. The hood body may be over 5 meters wide.
    Type: Grant
    Filed: June 18, 2018
    Date of Patent: April 2, 2019
    Assignee: Brunn Air Systems, Inc.
    Inventors: John Kelyman, Anthony York
  • Patent number: 10023996
    Abstract: One aspect of the invention relates to a dust control system for the “dry” side of a through-air drying (TAD) papermaking system. A series of dust hoods are placed in specific locations, both above and below the web of paper or tissue that is being manufactured. Each hood spans at least a substantial portion of the width of the belt or web, and each hood is shaped and otherwise adapted for its particular position, both to accommodate the structure of the papermaking machine and to ensure that the airflow through the inlet of the hood is substantially uniform across its entire width. Baffles are provided between certain hoods in order to create dust-control zones around the hoods, and air ramps and other elements may be used to drive dust into the dust control zones and toward the hoods.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: July 17, 2018
    Assignee: Brunn Air Systems, Inc
    Inventors: John Kelyman, Anthony York
  • Patent number: 9945074
    Abstract: Methods of cleaning papermaking fabrics are disclosed. Cleaning compositions for cleaning papermaking fabrics are also disclosed.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: April 17, 2018
    Assignee: WEST END PRODUCTS LLC
    Inventors: Dennis Z. Lasik, William F. Mullen
  • Patent number: 9708768
    Abstract: A sealing strip for a positive or negative pressure zone of a suction or blower roller of a machine for processing and/or producing web material, in particular a paper, cardboard or tissue machine. The sealing strip has a sealing face to be set against and in frictional contact with the inner side of a roller shell for sealing the positive or negative pressure zone during a rotational movement of the roller shell. The sealing strip has a lubricant channel in the form of a cutout from the sealing strip. The lubricant channel is arranged in front of the sealing face. The sealing strip is formed with a first material section at the sealing face and with a second material section at the front wall. The first and second materials are different in at least one physical property, such as modulus of elasticity, abrasion resistance, hardness, brittleness.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: July 18, 2017
    Assignee: Voith Patent GmbH
    Inventors: Marc Erkelenz, Jochen Honold, Helmut Bammer
  • Patent number: 9512565
    Abstract: A system comprising: one or more deckle board that are configured to extend along a machine direction of a paper machine and wherein the deckle board includes a stock side and a non-stock side and the stock side includes a microstructure that generates turbulent flow along a face of the deckle board that breaks up a boundary layer when stock contacts the stock side of the deckle board.
    Type: Grant
    Filed: February 10, 2015
    Date of Patent: December 6, 2016
    Assignee: IBS of AMERICA
    Inventors: Andrew Forester, James Faufau, Joshua N. Kruger
  • Patent number: 9376770
    Abstract: A roll cleaning apparatus for a paper making machine has a cleaning member that is mounted to a support member that extends lengthwise relative to a first roll. The cleaning member has a pad and is moveable between an engaged position against the roll during operation, and a disengaged position spaced away from the roll in a non-operating condition. The roll cleaning apparatus includes a drive connected to cause linear reciprocation of the cleaning member and a drive or actuator mounted to move the cleaning member between the engaged and disengaged positions, and operable to bias the cleaning member against the roll in use.
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: June 28, 2016
    Assignee: Superior Industrial Services
    Inventor: Antonio Porco
  • Patent number: 9187864
    Abstract: In an exemplary embodiment, the disclosed drying and dewatering system comprises an air knife and a vacuum slot, wherein the air knife is positioned over the vacuum slot and fibrous nonwoven material is passed under the air knife and over the vacuum slot. The embodiments of the present disclosure may be used to achieve greater water removal and more uniform binding agent distribution across the nonwoven fibrous material.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: November 17, 2015
    Assignee: BUILDING MATERIALS INVESTMENT CORPORATION
    Inventors: James A. Svec, Paul G. Wilson, Margie Ann Beerer, Jacob Stephen Zhanel
  • Publication number: 20140284012
    Abstract: The invention relates to an arrangement arranged to introduce a three-dimensional structure in a paper during production of said paper in a paper making machine (1). The arrangement comprises a heat roll (14) arranged to dry a wet paper web and an extended nip roll (12) arranged to form a transfer nip (TN) with said heat roll (14). The extended nip roll (12) is provided with a flexible jacket (17) arranged around the circumferential area of said extended nip roll (12). An external surface of said flexible jacket (17) is provided with a textured portion (15) and when the wet paper web passes the transfer nip between said extended nip roll (12) and said heat roll (14), said textured portion (15) of the external surface of the flexible jacket (17) will impart a three-dimensional texture to the paper web.
    Type: Application
    Filed: December 4, 2012
    Publication date: September 25, 2014
    Applicant: VALMET AB
    Inventor: Tord Gustavsson
  • Patent number: 8828190
    Abstract: A roll cleaning apparatus for a paper making machine has a cleaning member that is mounted to a support member that extends lengthwise relative to a first roll. The cleaning member has a pad and is moveable between an engaged position against the roll during operation, and a disengaged position spaced away from the roll in a non-operating condition. The roll cleaning apparatus includes a drive connected to cause linear reciprocation of the cleaning member and a drive or actuator mounted to move the cleaning member between the engaged and disengaged positions, and operable to bias the cleaning member against the roll in use.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: September 9, 2014
    Assignee: Superior Industrial Services
    Inventor: Antonio Porco
  • Patent number: 8808504
    Abstract: A cleaning apparatus includes at least one cleaning nozzle that generates and directs a high-pressure liquid jet towards a point of impact on a surface, such as a conveyor belt having a drying screen. A cleaning head has a main opening that faces towards the surface, a discharge opening and a wall with at least one inlet opening defined therein. The at least one cleaning nozzle is disposed outside of the cleaning head and is oriented such that the high-pressure liquid jet passes through the at least one inlet opening before striking the surface. At least one first compressed air supplying device is disposed outside of the cleaning head and is configured to steer liquid from the at least one cleaning nozzle, after it has struck the surface, towards the main opening of the cleaning head.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: August 19, 2014
    Assignee: Paprima Industries Inc.
    Inventor: Roman Caspar
  • Patent number: 8771473
    Abstract: A doctor blade for a fiber web machine (10) includes a blade section (11) and a fastening detent section (12). In the cross-sectional plane, the blade section (11) is asymmetric while the fastening detent section (12) is substantially symmetric so that the doctor blade (10) can be installed in two opposite positions for providing two different functions. The invention also relates to a doctor arrangement in a fiber web machine.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: July 8, 2014
    Assignee: Valmet Technologies, Inc.
    Inventors: Reijo Hassinen, Harri Ruotsalainen
  • Patent number: 8709210
    Abstract: The invention relates to a method in a fiber web machine. In the method, a fabric (12) included in the fiber web machine is used for supporting a web (14) produced by the fiber web machine. Moreover, in the method the location of the fabric (12) is changed in the cross direction (CD) of the fiber web machine. The location is changed by means of oscillation, the amplitude (19) of which is kept so high that the area of impact (20) of the web (14) on the fabric (12) is wider than the width (21) of the web (14) throughout the lifetime of the fabric (12). The invention also relates to an arrangement in a fiber web machine, and to a software product.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: April 29, 2014
    Assignee: Valmet Technologies, Inc.
    Inventors: Kari Erkkilä, Pekka Hilden
  • Patent number: 8673118
    Abstract: The present invention relates to a press device (1) that comprises an extended nip roll (2) and a counter roll (3). The extended nip roll (2) has a flexible jacket (4) and a support body (5) inside the flexible jacket (4). The extended nip (2) roll also has internal means for causing the support body (5) to move or expand radially towards an inner surface (6) of the flexible jacket (4) to form a nip with the counter roll. The rolls (2, 3) have axial ends (7, 8, 10, 11) that are supported in bearing housings (9, 12). One or several actuators (13) such as hydraulic cylinders connects bearing housings (9, 12) to each other and the actuator or actuators (13) are arranged to act on the bearing housings (9, 12) to cause them to move to each other in a closing movement. A mechanical stop (14) which is separate from the rolls (2,3) is arranged to halt the closing movement. The invention also relates to a machine that uses the press device and to a method of operating the press device.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: March 18, 2014
    Assignee: Valmet Aktiebolag
    Inventors: Mats Görrel, Karl-Johan Tolfsson
  • Patent number: 8667927
    Abstract: There is described an apparatus (1) for coating a cylinder (C), in particular a wiping cylinder of an intaglio printing press, with a plastic composition comprising inter alia a blade mechanism (4) comprising a single substantially planar blade (40) with a straight edge (40a) extending along the full length of the cylinder to be coated and which is mounted rotatably about an axis parallel to the axis of rotation of the cylinder to be coated. The blade comprises, at its terminal end proximate to the cylinder, an inclined end portion (4a) having an inverted-V shape rising from the upper side of the blade, the top edge of the inclined end portion forming the straight edge of the blade. The blade is adapted to be rotated so that the straight edge of the blade undergoes an upward movement substantially tangential to the periphery of the cylinder in order to discontinue the application of the plastic composition onto the surface of the cylinder.
    Type: Grant
    Filed: September 11, 2006
    Date of Patent: March 11, 2014
    Assignee: KBA-Notasys SA
    Inventors: Didier Dupertuis, Andrea Ganini
  • Patent number: 8657998
    Abstract: An apparatus for removing particulate-carrying air from a moving web. The moving web has a first side and a second side. The apparatus includes a NACA duct positioned in a non-contacting relationship on a first side of the moving web, and at least partially submerged in a particulate-carrying boundary layer of the moving web. The NACA duct can have an intake opening and an exhaust opening such that when the intake opening is submerged in the boundary layer at least a portion of the particulate-carrying air from the boundary layer enters the intake opening and exits the exhaust opening, thereby scavenging particulate-carrying air from said boundary layer.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: February 25, 2014
    Assignee: The Procter & Gamble Company
    Inventors: Brad Scott Lockhart, André Mellin, John Ferney McKibben, David Matthew Ogden, Brian Christopher Schwamberger, Peter Wiedmann, Richard Matthew Giachetto
  • Publication number: 20140008030
    Abstract: A roll cleaning apparatus for a paper making machine has a cleaning member that is mounted to a support member that extends lengthwise relative to a first roll. The cleaning member has a pad and is moveable between an engaged position against the roll during operation, and a disengaged position spaced away from the roll in a non-operating condition. The roll cleaning apparatus includes a drive connected to cause linear reciprocation of the cleaning member and a drive or actuator mounted to move the cleaning member between the engaged and disengaged positions, and operable to bias the cleaning member against the roll in use.
    Type: Application
    Filed: June 27, 2013
    Publication date: January 9, 2014
    Applicant: SUPERIOR INDUSTRIAL SERVICES
    Inventor: Antonio PORCO
  • Patent number: 8574401
    Abstract: An apparatus (24) for inserting an endless, flexible clothing (15) in or removing such a clothing from an industrial machine in which the clothing is arranged to run in an endless loop, comprising first and second units (25, 26) between which the clothing is to be fed in an advancement direction (F) essentially transversal to the run direction of the clothing in the machine.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: November 5, 2013
    Assignee: Metso Paper, Inc.
    Inventors: Dan Andersson, Göran Ekström
  • Publication number: 20130269896
    Abstract: A doctor blade for a fiber web machine (10) includes a blade section (11) and a fastening detent section (12). In the cross-sectional plane, the blade section (11) is asymmetric while the fastening detent section (12) is substantially symmetric so that the doctor blade (10) can be installed in two opposite positions for providing two different functions. The invention also relates to a doctor arrangement in a fiber web machine.
    Type: Application
    Filed: September 27, 2012
    Publication date: October 17, 2013
    Inventor: Metso Paper Inc.
  • Publication number: 20130139988
    Abstract: A planar element for use in a papermaking machine comprising a synthetic construction incorporating nanoparticles in a polymeric resin matrix.
    Type: Application
    Filed: January 30, 2013
    Publication date: June 6, 2013
    Applicant: Kadant Web Systems, Inc.
    Inventor: Kadant Web Systems, Inc.
  • Patent number: 8435385
    Abstract: A cleaning apparatus is disclosed for processing a moving surface. The cleaning apparatus includes at least one pad that is coupled to a support shoe. The support shoe is attached to a first end of a plate element, and the plate element includes a second end that is adapted to be received by a doctor blade holder.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: May 7, 2013
    Assignee: Kadant Inc.
    Inventors: Royal Gauvin, Marcelo De Boni, Allen J. Brauns, Daire Kavanagh
  • Patent number: 8337666
    Abstract: A doctoring system is disclosed for a papermaking machine wherein the doctoring system includes a doctor blade and a fluid assist means. The doctor blade is coupled to a doctor blade holder, and is for cleaning a moving surface. The doctor blade holder is coupled to a doctor-back. The fluid assist means is for providing a fluid under positive pressure that is higher than atmospheric pressure and is directed in a direction generally along a direction of movement of the moving surface such that a negative pressure that is lower than atmospheric pressure develops in a negative pressure zone adjacent the moving surface and a following surface of the doctor blade during movement of the moving surface.
    Type: Grant
    Filed: January 25, 2010
    Date of Patent: December 25, 2012
    Assignee: Kadant, Inc.
    Inventors: Robert P. Johnson, David Leeman, Allen J. Brauns
  • Patent number: 8337667
    Abstract: A doctoring system is disclosed for cleaning a moving surface in a papermaking machine, and the doctoring system includes a doctor blade and fluid assist system. The doctor blade is coupled to a doctor blade holder, and the doctor blade holder is coupled to a doctor-back. The fluid assist system is for providing a fluid under positive pressure that is higher than atmospheric pressure. The fluid is directed in a direction generally opposite a direction of movement of the moving surface such that fluid of high momentum is provided to impinge on water resident within the moving surface and adjacent a leading edge of the doctor blade during movement of the moving surface.
    Type: Grant
    Filed: January 25, 2010
    Date of Patent: December 25, 2012
    Assignee: Kadant, Inc.
    Inventors: Robert P. Johnson, David Leeman, Allen J. Brauns
  • Publication number: 20120318472
    Abstract: A cleaning apparatus includes at least one cleaning nozzle that generates and directs a high-pressure liquid jet towards a point of impact on a surface, such as a conveyor belt having a drying screen. A cleaning head has a main opening that faces towards the surface, a discharge opening and a wall with at least one inlet opening defined therein. The at least one cleaning nozzle is disposed outside of the cleaning head and is oriented such that the high-pressure liquid jet passes through the at least one inlet opening before striking the surface. At least one first compressed air supplying device is disposed outside of the cleaning head and is configured to steer liquid from the at least one cleaning nozzle, after it has struck the surface, towards the main opening of the cleaning head.
    Type: Application
    Filed: December 21, 2010
    Publication date: December 20, 2012
    Applicant: PAPRIMA INDUSTRIES INC.
    Inventor: Roman Caspar
  • Patent number: 8293074
    Abstract: A cleaning apparatus is disclosed for processing a moving surface. The cleaning apparatus includes at least one pad that is coupled to a support shoe. The support shoe is attached to a first end of a plate element, and the plate element includes a second end that is adapted to be received by a doctor blade holder.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: October 23, 2012
    Assignee: Kadant, Inc.
    Inventors: Royal Gauvin, Marcelo De Boni, Allen J. Brauns, Daire Kavanagh
  • Publication number: 20120247703
    Abstract: An apparatus (24) for inserting an endless, flexible clothing (15) in or removing such a clothing from an industrial machine in which the clothing is arranged to run in an endless loop, comprising first and second units (25, 26) between which the clothing is to be fed in an advancement direction (F) essentially transversal to the run direction of the clothing in the machine.
    Type: Application
    Filed: November 25, 2009
    Publication date: October 4, 2012
    Applicant: METSO PAPER, INC.
    Inventors: Dan Andersson, Göran Ekström
  • Publication number: 20120216978
    Abstract: A roll cleaning apparatus for a paper making machine has a cleaning member that is mounted to a support member that extends lengthwise relative to a first roll. The cleaning member has a pad and is moveable between an engaged position against the roll during operation, and a disengaged position spaced away from the roll in a non-operating condition. The roll cleaning apparatus includes a drive connected to cause linear reciprocation of the cleaning member and a drive or actuator mounted to move the cleaning member between the engaged and disengaged positions, and operable to bias the cleaning member against the roll in use.
    Type: Application
    Filed: February 23, 2012
    Publication date: August 30, 2012
    Applicant: Superior Industrial Services
    Inventor: Antonio Porco
  • Patent number: 8163135
    Abstract: A paper machine doctor assembly includes a doctor blade and a blade holder holding the same and a support member mounted on the paper machine frame. An essential feature of the assembly is that a separate pivot mount is provided between the blade holder and the support member, the separate pivot mount enabling the blade holder and the pivot mount to be disconnected from the support member by pulling the pivot mount outwardly and away from the support member.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: April 24, 2012
    Assignee: Runtech Systems Oy
    Inventor: Kimmo Loippo
  • Patent number: 8152965
    Abstract: The invention is related to a method for emptying a furnace floor in a soda recovery boiler when the soda recovery boiler is being shut down. The emptying may be started while smelt is still flowing in smelt spouts. The floor is emptied by sucking smelt from the furnace with a smelt eductor. The invention is also related to a device for removing smelt and wash water from a furnace of a soda recovery boiler by means of suction. Negative pressure is generated in the device by conducting pressurized gas into a suction pipe of the eductor so that the pressurized gas is discharged in the discharge direction of smelt and wash water.
    Type: Grant
    Filed: October 5, 2007
    Date of Patent: April 10, 2012
    Assignee: Boildec Oy
    Inventor: Timo Karjunen
  • Patent number: 8147652
    Abstract: A belt conditioning method, apparatus and paper machine employing the method and apparatus are provided. The belt method and apparatus include multiple conditioning devices using chemicals to condition water impermeable surfaces of paper machine belts, such as transfer belts and prevent deposits from accumulating on the belts. In one embodiment, the belt supports a web at a first portion of the belt's loop and is separated from the web at a second portion. The conditioning apparatuses are placed in the second portion.
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: April 3, 2012
    Assignee: Nalco Company
    Inventors: David I. Weinstein, Peter E. Perry, James P. Rivard, Pawel Cirocki
  • Patent number: 8132527
    Abstract: An electrode mixture paste (5) is applied on both sides of a strip of core material (1) as it runs along its lengthwise direction, and the coating thickness of the paste (5) is adjusted as the core material (1) coated with the paste (5) passes through a gap between a pair of scraper tools (16a, 16b). Tips (18) provided to the scraper tools (16a, 16b) scrape off the paste (5) to form a paste-coated portion of a predetermined width. The electrode mixture paste (5) scraped off with the tips (18) is returned through recesses (19) on the upstream side of the tips (18) in the running direction of the core material, so as to prevent the phenomenon where the coating thickness is increased at both side edges of the paste-coated portion. Thus, a method for applying electrode mixture paste is realized that can prevent the phenomenon where the coating thickness is increased at both side edges of the paste-coated portion and prevent process failures such as deformation of paste-coated sheet.
    Type: Grant
    Filed: April 11, 2006
    Date of Patent: March 13, 2012
    Assignee: Panasonic Corporation
    Inventors: Kimihiro Imamura, Hiroyuki Usui, Tadakazu Seto
  • Patent number: 8128785
    Abstract: The present invention relates to a method and apparatus for filling and cleaning a pulp tower. The invention is most suitable for filling and cleaning high-consistency pulp towers, bleaching towers, storage tanks and similar towers containing fiber suspensions, of the wood-processing industry. The apparatus and method according to the invention for filling and cleaning a pulp tower, in which method pulp is fed into the pulp tower either through its cover (10) or at least feed devices (24) arranged at its top, are characterized in that the space surrounding the feed device (24) is washable at the same time as the pulp is fed into the tower by means of washing devices (28, 30, 32) arranged in connection with the feed devices.
    Type: Grant
    Filed: August 15, 2007
    Date of Patent: March 6, 2012
    Assignee: Sulzer Pumpen AG
    Inventor: Juha Ottelin
  • Patent number: 8117765
    Abstract: The invention relates to an arrangement and a method for sealing of a pocket space between drying cylinders (2, 3) in a paper machine or similar. In the method for sealing of the pocket space: a wire (5) is moved supported by the first and the second cylinder (2, 3, 4), a gap between the pocket space (15) and the space outside (24) it is sealed by a runnability component (6), which comprises at least a sealing surface (19, 22) and a blow nozzle (21) provided with a nozzle slot (26) of a size of 0.5-3.5 mm and elongated in the cross direction, the sealing surface (19, 22) is kept at a distance of 5-15 mm from the moving wire (5), air is blown with the blow nozzle (21) from a blow point (27) and along the sealing surface (22) towards a sealing point (16) and further via the sealing point (16) away (24) from the pocket space. The invention comprises also a runnability component (6) and a method for manufacturing the same.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: February 21, 2012
    Assignee: Metso Paper, Inc.
    Inventors: Rami Aaltonen, Pekka Saarikivi
  • Patent number: 8080132
    Abstract: The invention relates to a device (11) for stabilising the transport of a material web (12) on the upper face of an air-permeable machine clothing (10), in particular a fibrous web. The device is located on the underside of the machine clothing directly upstream of an intake nip in the direction of travel (17) of the web, said nip being formed by a roll (5) and the machine clothing, and comprises a first negative-pressure zone (19) and at least one vacuum opening (20) that faces essentially in the opposite direction to the direction of travel of the web, communicating with the first negative-pressure zone of the device. This permits the boundary layer (23) of air that is carried along by the underside of the machine clothing to be at least partially sucked from said clothing into the first negative-pressure zone.
    Type: Grant
    Filed: July 6, 2005
    Date of Patent: December 20, 2011
    Assignee: Voith Patent GmbH
    Inventors: Thomas Scherb, Carlos Luiz Silva
  • Patent number: 8070915
    Abstract: A static dewatering element (10) for a web forming machine has a thermally sprayed coating (26) manufactured of powder particles (34). The powder particles (34) are agglomerates composed of primary particles (36). The average size of the primary particles (36) is smaller than 0.5 ?m. The invention also relates to a method for covering a static dewatering element designed for a web forming machine.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: December 6, 2011
    Assignee: Metso Paper, Inc.
    Inventors: Antti Ahmaniemi, Veli-Pekka Tarkiainen
  • Publication number: 20110240243
    Abstract: An apparatus for cleaning and cooling a liquor nozzle, the nozzle including at least a liquor tube for feeding liquor and chemicals into a furnace of a recovery boiler. The apparatus includes an outer casing tube, which defines a space whereto conduits are provided for introducing water and steam to generate an emulsion or a conduit for introducing emulsion generated by the water and steam and the surface of which is provided with openings, such as pores or holes, for discharging the emulsion formed by water and steam through the outer casing.
    Type: Application
    Filed: April 6, 2011
    Publication date: October 6, 2011
    Applicant: Andritz Oy
    Inventors: Markku TANTTU, Kari Saviharju, Sirpa Du Jardin
  • Patent number: 7976681
    Abstract: An apparatus to produce a fibrous web having a three-dimensional surface structure, especially a paper, cardboard or tissue web, includes a headbox, a forming element, especially a forming roll, a structured fabric and a dewatering fabric, whereby the structured fabric and the dewatering fabric run together and form a stock infeed nip and are carried over the forming element whereby the structured fabric is the inside fabric and the dewatering fabric is the outside fabric and whereby fibrous suspension is fed into the stock infeed nip by way of the headbox. At least one catch pan is provided in the area of the outfeed nip which is formed between the forming element and the structured fabric coming off it for water, fibers, fines and/or similar substances accumulating in the area of this outfeed nip.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: July 12, 2011
    Assignee: Voith Patent GmbH
    Inventor: Luiz C. Da Silva
  • Patent number: 7976682
    Abstract: A pulp washer including: a cylindrical assembly of trays to receive pulp, wherein the assembly rotates the trays through at least one wash stage; a housing having a header to direct pulp to the trays and the at least one wash stage, wherein the housing has at least one access port aligned with one or more of the trays; a screen plate in each tray of the assembly, wherein the screen plate has apertures sized to retain pulp fibers and allow liquid to pass through the plate, and a screen hinge attached to a side edge of the screen plate and to the tray, wherein the screen plate pivots about the hinge to allow a cleaning spray to be applied to an outer screen plate surface and a back screen plate surface.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: July 12, 2011
    Assignee: Andritz Inc.
    Inventor: Grant Bechard
  • Patent number: 7972481
    Abstract: Scraping apparatus for the paper industry, of the type which consists of a scraping blade (l), a support (s) for the scraping blade (l) with a pivot swivel pin (e) with respect to a tray (4), said tray being supported (4) on the frame (b) of the apparatus, characterized because magnetic means are used to exert magnetic forces between the tray (4) or from the fixed element to it and the frame (b), and there are means of action on said magnetic means to activate/deactivate the magnetic forces between the tray (4) and the frame (b). The magnetic means consist of at least one zone (z) of ferromagnetic material and several permanent magnets or electromagnets (1) placed on the tray (4)-frame (b) in a conjugate/corresponding manner.
    Type: Grant
    Filed: February 27, 2008
    Date of Patent: July 5, 2011
    Inventors: Jose Joaquin Amonarriz Azcolain, Jose Miguel Echeberria Goicoechea
  • Patent number: 7972480
    Abstract: The invention relates to an apparatus and a method for removing a broken pulp web from a pulp dryer. The apparatus includes a maintenance platform arranged at the first or the second end of the pulp dryer, outside the walls of the pulp dryer; a device for shifting the maintenance platform in a substantially vertical direction to a desired height with respect to the pulp dryer, and an extraction device fixed to the edge of the maintenance platform facing the dryer for pulling a broken pulp web out of the pulp dryer.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: July 5, 2011
    Assignee: Metso Paper, Inc.
    Inventors: Olli Huhtala, Markku Laitonen, Johan Lindholm, Timo Vuokko, Ilkka Eivola
  • Patent number: 7947152
    Abstract: Doctor blade for the paper industry, comprising a scraping plate (1) and holding means (p) for the scraping plate which in turn are held by a frame (a) the ends of which are securely fastened (2) by two fastening points (pf) to a stationary structure (f), characterized in that it comprises: a) mechanical means for adjustable fastening (3) between at least one end (2) of the frame and the stationary structure (f) in such a way that the distance (d) between the two fastening points (pf) can be varied by the user; and b) means for incorporating an additional mass (5) in adjustable quantities.
    Type: Grant
    Filed: February 27, 2008
    Date of Patent: May 24, 2011
    Inventors: Jose Joaquin Amonarriz Azcolain, Jose Miguel Echeberria Giocoechea
  • Patent number: 7943012
    Abstract: A device for protecting a spraying equipment and surroundings in a paper or board machine, for applying a treatment medium onto a moving surface, comprises a protecting cover forming a single chamber having the spraying equipment located therein and which is open towards the moving surface in connection with an application zone. Two wall elements of the protecting cover extend in the cross-machine direction on either side of the application zone, and define machine-wide gaps with the moving surface. The protecting cover includes a sealing arrangement arranged in connection with the gaps to control and restrict passage of air and contaminants through the gaps; a system for a controlled supply of capture air for capturing contaminants within the space; and an evacuating system for a controlled, continuous evacuation of the capture air with contaminants from the chamber. An associated method of using such a device is also provided.
    Type: Grant
    Filed: April 6, 2005
    Date of Patent: May 17, 2011
    Assignee: Metso Paper, Inc.
    Inventors: Hans-Erik Backman, Don Cesario, Bertil Eriksson, Marko Hyensjö, Ray Krumenacker, Anders Lindén, Heikki Luoma, Per-Arne Nyman, Robert Olsson, Phil Ponka, Mauri Puumala, Ian Salo
  • Patent number: 7918968
    Abstract: An apparatus is described for cleaning papermaking felt by applying a low concentration of a cleaning solution through the oscillating needle nozzles. The detergent is applied intermittently while paper is being manufactured. Each cleaning period lasts for at least the length of time required for the nozzles to cover the entire surface of the felt, and preferably twice that period of time. The application of cleaning solution is then discontinued for a period of time. This cycle is repeated continuously as the paper is being manufactured. The apparatus includes a first cleaning chemical reservoir, a second cleaning chemical reservoir, a high pressure pump coupled to the first and second reservoirs, and a control unit having programming for selectively injecting the chemicals.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: April 5, 2011
    Assignee: Dubois Chemicals, Inc.
    Inventors: Gary Baker, David Kelso
  • Patent number: 7897014
    Abstract: A washer for washing and dewatering cellulosic pulp is disclosed, comprising a rotary drum with a plurality of external compartments defined by axial compartment walls distributed along the drum's circumference, a stationary cylindrical casing enclosing the drum, whereby a ring-shaped space is defined between the casing and the drum and where longitudinal seals divide the ring-shaped space into a forming zone for forming the pulp, at least one washing zone for washing the pulp at overpressure, and a discharge zone for feeding out the washed pulp, and the filtrates from different washing stages are collected in a peripheral valve located at the drum's end wall, the filtrate stages are separated by seals in the valve, and at least some of the valve seals are displaced in relation to the corresponding longitudinal seal, as seen in the direction of rotation of the drum.
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: March 1, 2011
    Assignee: Metso Paper, Inc.
    Inventors: Jörgen T. Lundberg, Rickard Andersson, Johan Bylander, Magnus Henriksson
  • Patent number: 7897015
    Abstract: Tissue products are described that have been topically treated with a chemical additive, such as a softener. The softener may be, for instance, a polysiloxane. The polysiloxane is topically applied to a tissue sheet, such as a single ply sheet, so as to form a Z-directional gradient in the sheet. Particular, most of the polysiloxane remains on the surface of the tissue product as opposed to migrating to the center of the sheet. In this manner, tissue sheets are formed with improved softness at lower levels of polysiloxane and without the need for applying any surfactants to the sheet. A system for applying chemical additives to tissue sheets is also described. The system includes a chemical additive applicator, such as a meltblown die that emits the chemical additive through a plurality of orifices. In one embodiment, the system includes a device for periodically cleaning the orifices during application of the chemical additive.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: March 1, 2011
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Kou-Chang Liu, Tom G. Shannon, Peter J. Allen, Geof Carlow, Mike Goulet, Paul Burden, Greg Aykens, Joe Capizzi, Thomas Hunt, Diane Linskens, Roger Wendler, John Wnek
  • Patent number: 7871495
    Abstract: A device for removing a liquid, dusty or solid substance from a moving fabric or web. A roll is placed transversely in relation to the moving fabric or web and arranged to rotate around a rotation axis. The roll includes an outer mantle through which a liquid or air flow can enter the inside of the roll. The rotating roll is placed inside a chamber. The chamber includes an opening in a direction of the rotating axis. The opening is arranged to expose at least a part of the outer mantle such that the moving fabric or web tangential to the chamber can be supported against the outer mantle. At least a spiral, screw or threaded structure is arranged inside the rotating roll at a distance from the outer mantle, and is arranged to rotate around a rotating axis and to transfer liquid or air that has entered the roll in the direction of the rotation axis.
    Type: Grant
    Filed: February 21, 2006
    Date of Patent: January 18, 2011
    Assignee: Effcom Oy
    Inventor: Olavi Savolainen
  • Patent number: 7867364
    Abstract: A doctor assembly is disclosed for use in a paper-making machine. The doctor assembly includes a doctor blade holder into which a doctor blade may be inserted and the doctor blade holder includes a pressure plate, pressure adjustment system, a support tray, and a bracket in accordance with an embodiment. The pressure plate is for supporting and aligning the doctor blade in a cross machine direction for application to a machine roll. The pressure adjustment system is for adjusting the pressure applied to the machine roll by the doctor blade, said pressure adjustment means including at least one fluid reservoir having a wall that contacts the pressure plate. The support tray for supporting the at least one fluid reservoir, and the support tray includes at least one bracket alignment feature. The bracket is attached to the support tray for pivotal attachment to the pressure plate.
    Type: Grant
    Filed: August 14, 2007
    Date of Patent: January 11, 2011
    Assignee: Kadant Inc.
    Inventors: David Leeman, Royal Gauvin
  • Patent number: 7850824
    Abstract: An apparatus is described for cleaning papermaking felt by applying a low concentration of a cleaning solution through the oscillating needle nozzles. The detergent is applied intermittently while paper is being manufactured. Each cleaning period lasts for at least the length of time required for the nozzles to cover the entire surface of the felt, and preferably twice that period of time. The application of cleaning solution is then discontinued for a period of time. This cycle is repeated continuously as the paper is being manufactured. The apparatus includes a first cleaning chemical reservoir, a second cleaning chemical reservoir, a high pressure pump coupled to the first and second reservoirs, and a control unit having programming for selectively injecting the chemicals.
    Type: Grant
    Filed: October 2, 2009
    Date of Patent: December 14, 2010
    Assignee: Dubois Chemicals, Inc.
    Inventors: Gary Baker, David Kelso