Flow Box, Slice, And/or Approach Flow Patents (Class 162/336)
  • Patent number: 10388465
    Abstract: The present embodiments provide a highly durable semiconductor element capable of generating electricity or emitting light with high efficiency, and further provide a manufacturing method thereof. The semiconductor element according to the embodiment comprises a first electrode, a second electrode, an active layer and a substrate, and is characterized in that the active layer contains crystals oriented anisotropically. For manufacturing the element, the active layer is produced by the steps of: applying a coating solution containing precursor compounds of the active layer and an organic solvent capable of dissolving the precursor compounds, to form a coating film; and then growing the crystals in a specific direction parallel to the surface of the coating film.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: August 20, 2019
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takeshi Gotanda, Haruhi Oooka
  • Patent number: 9908268
    Abstract: A baffle tank is disclosed which is designed to filter a fluid along with a method of forming the baffle tank. The baffle tank has a bottom wall joined to at least one sidewall to form an enclosure having a first chamber in fluid communication with a second chamber. The first chamber has a top wall with an enlarged opening formed therein. The first chamber also has an inlet for receiving incoming fluid. The second chamber has a top wall with an enlarged opening formed therein. The second chamber also has an outlet through which fluid can be discharged. A first baffle is formed by at least a portion of the sidewall of the first chamber. The first baffle is joined to at least a portion of the sidewall of the second chamber. The first baffle extends downward from the top walls of the first and second chambers and has a lower end positioned above the bottom wall.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: March 6, 2018
    Inventor: Adam John Keller
  • Patent number: 9303339
    Abstract: Methods and apparatuses for forming a nonwoven web are described herein. The apparatus includes a mixing partition defining one or more openings therein that permit fluid communication between two fluid flow streams, at least one of which includes a fiber. The apparatus also includes an enclosed region surrounding at least a portion of the mixing partition. The enclosed region is adapted to provide an applied pressure to a fluid flow stream to urge the stream through one or more of the openings in the mixing partition. The apparatus also includes a receiving region designed to receive at least a combined flow stream and form a nonwoven web by collecting fiber from the combined flow stream.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: April 5, 2016
    Assignee: Donaldson Company, Inc.
    Inventors: Hemant Gupta, Ajay Singh
  • Patent number: 8852403
    Abstract: A twin wire press for dewatering solid-liquid suspensions, such as pulp suspensions, between top and bottom webs is described herein which includes consecutive primary, secondary and tertiary dewatering sections. The primary dewatering section includes a wedge area. The secondary dewatering section is positioned adjacent to the primary section downstream therefrom and includes grooved rolls in an s-roll configuration. The tertiary dewatering section includes rolls in a scissor-nip configuration. The press rolls in the secondary and tertiary section are all supported onto a frame. Whenever maintenance is to be performed on any one of the grooved rolls or on the press roll assemblies, an overhead crane can for example be used since no frame structure is provided on top thereof.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: October 7, 2014
    Assignee: Kadant Canada Corp.
    Inventors: Hughes Dionne, Marc-Andre Hetu, Daniel Parenteau
  • Patent number: 8617357
    Abstract: A twin wire press for dewatering solid-liquid suspensions, such as pulp suspensions, between top and bottom webs is described herein which includes consecutive primary, secondary and tertiary dewatering sections. The primary dewatering section includes a wedge area. The secondary dewatering section is positioned adjacent to the primary section downstream therefrom and includes grooved rolls in an s-roll configuration. The tertiary dewatering section includes rolls in a scissor-nip configuration. The press rolls in the secondary and tertiary section are all supported onto a frame. Whenever maintenance is to be performed on any one of the grooved rolls or on the press roll assemblies, an overhead crane can for example be used since no frame structure is provided on top thereof.
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: December 31, 2013
    Assignee: Kadant Canada Corp.
    Inventors: Hugues Dionne, Marc-André Hétu, Daniel Parenteau
  • Patent number: 8524041
    Abstract: Embodiments for methods and apparatuses for forming a nonwoven web are described herein. In one embodiment, an apparatus includes one or more sources configured to dispense a first fluid flow stream comprising a fiber and a second fluid flow stream also comprising a fiber. The apparatus also includes a mixing partition downstream from the one or more sources, where the mixing partition is positioned between the first and second flow streams from the one or more sources. The mixing partition defines one or more openings that permit fluid communication between the two flow streams. The apparatus also includes a receiving region situated downstream from the one or more sources and designed to receive at least a combined flow stream and form a nonwoven web by collecting fiber from the combined flow stream.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: September 3, 2013
    Assignee: Donaldson Company, Inc.
    Inventors: Hemant Gupta, Brad E. Kahlbaugh
  • Patent number: 8343314
    Abstract: A pulp feeder for used paper recycling apparatus being installed in a room of a small shop or the like, friendly to the environment, low in running cost, and capable of maintaining a high confidentiality is presented. The pulp feeder includes a partition member disposed slidably on the downside of a running endless mesh belt, and a paper making frame body disposed slidably on the upside of the mesh belt, and an overflow gate is provided in the paper making frame body for keeping constant the water level of the collected pulp suspension, and the pulp suspension supplied in the paper making frame body is collected up to a specific water level defined by the overflow gate, and is uniformly diffused and supplied on the upside of the running mesh belt. Accordingly, if the supply water volume of pulp suspension fluctuates, the water level of pulp suspension staying in the paper making frame body is always kept constant, and the weight of the wet paper manufactured on the mesh belt is stabilized.
    Type: Grant
    Filed: January 8, 2008
    Date of Patent: January 1, 2013
    Assignee: Seed Company Limited
    Inventors: Shigeru Tamai, Yuji Koyama
  • Publication number: 20120273150
    Abstract: Distribution channeling for stock suspension, the distribution channeling being in connection with a headbox of a paper machine The distribution channeling is fed with a transverse input channel for stock suspension, such as with an inlet pipe, and which distribution channeling feeds stock suspension into an intermediate chamber and onwards from the intermediate chamber to the slice channel of a paper machine. The distribution channeling is formed from a number of modular pieces and is fitted to the headbox after the input channel. One or more distribution channels, such as a hole, for the stock suspension flowing through a modular piece are formed in the modular piece. The modular pieces are placed side by side such that an interspace forms between them, from which interspace diluting water can be fed into the distribution channel.
    Type: Application
    Filed: April 27, 2012
    Publication date: November 1, 2012
    Applicant: VAAHTO PAPER TECHNOLOGY OY
    Inventors: Erkka NIEMINEN, Harri KRONHOLM
  • Patent number: 8267681
    Abstract: Embodiments for methods and apparatuses for forming a nonwoven web are described herein. In one embodiment, an apparatus includes one or more sources configured to dispense a first fluid flow stream comprising a fiber and a second fluid flow stream also comprising a fiber. The apparatus also includes a mixing partition downstream from the one or more sources, where the mixing partition is positioned between the first and second flow streams from the one or more sources. The mixing partition defines one or more openings that permit fluid communication between the two flow streams. The apparatus also includes a receiving region situated downstream from the one or more sources and designed to receive at least a combined flow stream and form a nonwoven web by collecting fiber from the combined flow stream.
    Type: Grant
    Filed: January 27, 2010
    Date of Patent: September 18, 2012
    Assignee: Donaldson Company, Inc.
    Inventors: Hemant Gupta, Brad E. Kahlbaugh
  • Publication number: 20120138251
    Abstract: Headbox for a machine to produce a fiber web, in particular a paper, cardboard or tissue web from at least one fibrous suspension, having a headbox nozzle comprising an upper nozzle wall and a lower nozzle wall, as well as two side walls tapering to form an outlet, and having an inner chamber through which the fibrous suspension flows in flow direction during operation of headbox, whereby on upper nozzle wall of headbox nozzle a baffle is arranged on the outlet side which is movable by way of several elements and which extends across machine width, and which has a baffle protrusion and a baffle immersion depth and which has at least two surfaces—an upstream ramp surface and a subsequent main surface contacted by a fibrous suspension during operation of headbox. The inventive headbox is characterized in that between ramp surface of baffle and main surface of baffle at least one refraction surface which is in contact during operation of headbox with a fibrous suspension is provided on baffle.
    Type: Application
    Filed: December 8, 2011
    Publication date: June 7, 2012
    Inventors: Wolfgang Ruf, Markus Häussler, Stefan Schlegel, Jens Haessner
  • Publication number: 20120103549
    Abstract: Enhancement of papermaking drainage and retention properties of aqueous cellulosic suspensions used for production of paper or paper board with a retention/drainage additive system including ionic crosslinked acrylic acid-acrylate copolymer microparticles is described. Paper and paperboard products made with these copolymer microparticles are also described.
    Type: Application
    Filed: October 26, 2011
    Publication date: May 3, 2012
    Applicant: BUCKMAN LABORATORIES INTERNATIONAL, INC.
    Inventor: Weiping Ban
  • Patent number: 8133355
    Abstract: The invention relates to a method in the wet end of a web forming process. In the method, at least one electrode pair (102, 103) is placed in the wet end. The electrode pair (102, 103) is supplied with a current/voltage from a power source (100), so that an electric field is set up between the electrode pair (102, 103), causing the material particles in the pulp suspension in the wet end to be electrically charged in a desired manner and to move in a desired manner in the pulp suspension in the wet end. The current/voltage of the power source (100) is controlled by means of a measuring and control unit (101) so as to cause the material particles in the pulp suspension to be electrically charged and to move in a desired manner, thus allowing the retention, formation and orientation of the material particles in the pulp suspension to be substantially improved.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: March 13, 2012
    Assignee: Savcor Process Oy
    Inventors: Martti Pulliainen, Mikko Vepsalainen, Jukka Rautiainen, Matti Hakkinen, Pekka Kylliainen, Seppo Karine, Jari Rasanen, Kirsi Partti-Pellinen, Ari Johansson, Isto Heiskanen, Jyri Jarvi
  • Publication number: 20120048495
    Abstract: The invention relates to an arrangement for feeding a fibrous suspension (1) to at least one headbox (8) of a paper or cardboard machine with at least one diluting device (5), in which the fibrous suspension (1) is produced by mixing a high-consistency suspension (6) with a diluting liquid, wherein the diluting liquid is formed at least in part by backwater (2) of the paper or cardboard machine, the backwater (2) is pre-degassed in at least one open channel (3) and subsequently is guided into a diluting device (5) via a degassing device (4). The expenditure is to be reduced thereby in that the potential energy of the fibrous suspension (1) in the channel (3) is not above the potential energy of the fibrous suspension (1) in the diluting device (5) and the pressure at the outflow of the degassing device (4) is between ?0.3 and 1 bar or that the potential energy of the fibrous suspension (1) in the channel (3) is above the potential energy of the fibrous suspension (1) in the diluting device (5).
    Type: Application
    Filed: March 22, 2010
    Publication date: March 1, 2012
    Applicant: VOITH PATENT GMBH
    Inventor: Wolfgang Mannes
  • Publication number: 20120048494
    Abstract: A twin wire press for dewatering solid-liquid suspensions, such as pulp suspensions, between top and bottom webs is described herein which includes consecutive primary, secondary and tertiary dewatering sections. The primary dewatering section includes a wedge area. The secondary dewatering section is positioned adjacent to the primary section downstream therefrom and includes grooved rolls in an s-roll configuration. The tertiary dewatering section includes rolls in a scissor-nip configuration. The press rolls in the secondary and tertiary section are all supported onto a frame. Whenever maintenance is to be performed on any one of the grooved rolls or on the press roll assemblies, an overhead crane can for example be used since no frame structure is provided on top thereof.
    Type: Application
    Filed: March 9, 2010
    Publication date: March 1, 2012
    Inventors: Hugues Dionne, Marc-André Hétu, Daniel Parenteau
  • Patent number: 8075736
    Abstract: Headbox for a paper machine which discharges paper raw material onto a wire as a raw material jet from a slice which is supplied with the paper raw material. The headbox includes an orientation correcting arrangement for correcting a pulp fiber orientation by supplying the paper raw material as a correction flow to a single location in either a central portion of the slice or a plurality of locations other than end portions thereof. The paper raw material is one of extracted from a taper header in which paper raw material for a main flow is stored and extracted from a correction-only taper header in which paper raw material for correcting the pulp fiber orientation is stored. This abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: December 13, 2011
    Assignee: Voith Patent GmbH
    Inventors: Takeo Nakazawa, Osamu Fujimura, Junichi Ito, Jun Murakawa
  • Patent number: 8075737
    Abstract: A headbox apparatus for a papermaking machine is disclosed. The headbox apparatus defines a flow path for stock flowing between an upstream location and a downstream slice lip. The apparatus includes a plurality of blocks which are anchored within the flow path between the upstream location and the slice lip. Each block and an adjacent block of the plurality of blocks define therebetween a flow tube for the flow therethrough of the stock. The flow tube has an upstream portion having an upstream and a downstream end. The flow tube has a downstream portion having an upstream and a downstream extremity, the upstream extremity of the downstream portion extending from the downstream end of the upstream portion. The downstream portion of the flow tube has a volume which is greater than a further volume of the upstream portion of the flow tube such that when the stock flows from the upstream portion to the downstream portion of the flow tube, the stock is mixed within the downstream portion.
    Type: Grant
    Filed: December 18, 2007
    Date of Patent: December 13, 2011
    Assignee: Paperchine Inc.
    Inventor: James Leroy Ewald
  • Patent number: 8025770
    Abstract: A used paper processing apparatus to be place in small shop or general household, capable of holding high secrecy, friendly to the environment, and low in running cost. In a furniture size apparatus case, a pulp manufacturing section for manufacturing used paper pulp by macerating and beating the used paper, a paper making section for manufacturing recycled paper by making the used paper pulp manufactured in the pulp manufacturing section, and a control section for driving and controlling by interlocking the pulp manufacturing section and paper making section are provided, being place in a room producing used paper, and by macerating and processing the used paper by the pulp manufacturing section, leak or disclosure of confidential information or private information written or printed on used paper can be prevented effectively, and further used paper pulp is processed by the paper making section, and recycled paper is manufactured.
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: September 27, 2011
    Assignee: Seed Company Limited
    Inventors: Shigeru Tamai, Yuji Koyama
  • Patent number: 7897079
    Abstract: A method of producing a paperless gypsum/fiber board from a mixture including reinforcing material particles, calcined gypsum and water. A headbox feeds the mixture into a panel forming area (forming pond) over the upper surface of a continuous forming fabric to form a panel mat. Also, a reinforcing mesh is fed over a transverse member, located over a portion of the forming fabric, and into the forming pond to embed the mesh in the mixture. At least a portion of a downstream end of the transverse member is under a downstream portion of the headbox or downstream of the headbox. Then the panel mat is pressed, the calcined gypsum of the pressed panel mat is rehydrated, and the resulting board is dried.
    Type: Grant
    Filed: September 21, 2006
    Date of Patent: March 1, 2011
    Assignee: United States Gypsum Company
    Inventor: David Paul Miller
  • Patent number: 7897016
    Abstract: A headbox apparatus for a papermaking machine is disclosed. The headbox apparatus defines a flow path for stock flowing between an upstream location and a downstream slice lip. The apparatus includes a plurality of blocks which are anchored within the flow path between the upstream location and the slice lip. Each block and an adjacent block of the plurality of blocks define therebetween a flow tube for the flow therethrough of the stock. The flow tube has an upstream portion having an upstream and a downstream end. The flow tube has a downstream portion having an upstream and a downstream extremity, the upstream extremity of the downstream portion extending from the downstream end of the upstream portion. The downstream portion of the flow tube has a volume which is greater than a further volume of the upstream portion of the flow tube such that when the stock flows from the upstream portion to the downstream portion of the flow tube, the stock is mixed within the downstream portion.
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: March 1, 2011
    Inventor: James Leroy Ewald
  • Patent number: 7794570
    Abstract: A headbox apparatus is disclosed for a papermaking machine. The headbox apparatus defines a flow path for stock flowing between an upstream header and a downstream slice lip. The apparatus includes a plurality of elements which are anchored within the flow path between the header and the slice lip. Each element and an adjacent element of the plurality of elements defines therebetween a flow tube for the flow therethrough of the stock. The flow tube has an upstream portion and a downstream portion that gradually widens in a direction from the header to the slice lip.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: September 14, 2010
    Assignee: Paperchine Inc.
    Inventor: James L Ewald
  • Patent number: 7785442
    Abstract: A method for feeding one or more chemicals into a papermaking process is disclosed. More specifically, a method for feeding chemistry into a thick stock of a papermaking process is disclosed.
    Type: Grant
    Filed: July 17, 2007
    Date of Patent: August 31, 2010
    Assignee: Nalco Company
    Inventors: Tommy Jacobson, Gary S. Furman
  • Publication number: 20100206508
    Abstract: A distribution unit for adding a fiber suspension to an inlet space in a dewatering press is disclosed. The distribution unit comprises a distribution housing, which forms at least one distribution slit intended to be connected to the inlet space of the dewatering press, and at least one inlet member for adding the fiber suspension to the distribution slit. The distribution housing is provided with at least one opening to the distribution slit and a matching hatch for sealing the opening. The hatch is hinged to the distribution housing so that it is pivotable relative to the distribution housing between a first position and a second position. An inlet box is also disclosed comprising a number of the distribution units.
    Type: Application
    Filed: February 21, 2008
    Publication date: August 19, 2010
    Applicant: METSO PAPER, INC.
    Inventors: Henrik Bergström, Leif Ödmark, Johan Fällman
  • Patent number: 7588663
    Abstract: A multiple mode headbox is provided including a support surface, two or more chambers, and an adjustable roof. Each chamber includes a plurality of nozzles adapted to optionally supply papermaking fibers to the support surface. The adjustable roof is operably configured to adjust over a range of movement such that it defines a forming zone between the support surface and at least one chamber in a first mode, and between said support surface and at least one different said chamber in a second mode.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: September 15, 2009
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Henry Skoog, James W. Clark, Joseph K. Baker, John M. Conner
  • Patent number: 7578905
    Abstract: Methods for achieving even transverse distribution and propagation of a flowing medium are disclosed in which the flowing medium is supplied through a conduit and is deflected during diverging propagation in at least one distribution gap. The method includes deflecting the flowing medium during diverging propagation along the distribution gap in which the medium is conveyed through a passage to an outlet gap having a larger depth than the depth of the distribution gap. The medium is conveyed over an edge of the passage extending transverse to the direction of the flow, and the edge is designed to obtain a propagation along the flowing path of the diverging medium that provides a substantially even and parallel flow of the medium along the outlet gap. Apparatus for achieving this method is also disclosed.
    Type: Grant
    Filed: January 13, 2005
    Date of Patent: August 25, 2009
    Assignee: Metso Paper, Inc.
    Inventors: Jörgen Lundberg, Olof Melander
  • Patent number: 7550060
    Abstract: An apparatus for feeding one or more chemicals into a process stream of a papermaking process is disclosed, as well as a method of utilizing the apparatus for feeding one or more chemicals into a process stream is disclosed.
    Type: Grant
    Filed: January 25, 2006
    Date of Patent: June 23, 2009
    Assignee: Nalco Company
    Inventors: Tommy Jacobson, Mika Salonen, Martti Latva
  • Patent number: 7485206
    Abstract: A headbox apparatus of a paper machine or equivalent has a body (11). Dilution water (arrow L2) is conducted through at least two rows of ducts (12a1, 12a2 . . . ) into each body mixing chambers (13a1, 13a2 . . . ). Each mixing chamber (13a1, 13a2 . . . ) is limited by vertical walls (T1), a bottom wall (T2) and a covering wall (T3), and a partition wall (16a1, 16a2 . . . ). The ducts (14a1.1, 14a1.2 . . . ) on the inlet side of the mixing chamber extend into the mixing chamber (13a1, 13a2 . . . ) at a distance (h1) from the ducts (15a1.1, 15a1.2 . . . , 15a2.2 . . . ) on the outlet side of the mixing chamber (13a1, 13a2 . . . ), whereby an annular gap (D1) is left between the aligned duct (14a1.1, 14a1.2 . . . 14a2.1, 14a2.2 . . . ) on the inlet side and the duct (15a1.1, 15a1.2 . . . , 15a2.1, 15a2.2 . . . ) on the outlet side. Each mixing chamber (13a1, 13a2 . . . ) is filled by dilution water which is conducted through the annular gap (D1) to join the stock (m1).
    Type: Grant
    Filed: September 6, 2004
    Date of Patent: February 3, 2009
    Assignee: Metso Paper, Inc.
    Inventors: Jarmo Kirvesmäki, Ilkka Kemiläinen, Hannu Turpeinen, Janne Lappi
  • Publication number: 20090020251
    Abstract: In a machine for forming a layered fibrous web, at least two different fiber suspensions are led through a head box (10), the fiber suspensions are separated from each other by a blade device (18, 180), the fiber suspensions are supplied to a web forming device (24) and a water layer is formed having a transversely uniform flow at an outlet at the end of the blade device (18, 180), such that the water layer constitutes an extension of the blade device and thereby prevents mixing of the fiber suspensions. The blade device (18, 180) can be freely movable in a substantially vertical direction in order to permit an equalization of pressure between the fiber suspension layers separated by the blade device and thereby reducing wake effects downstream the edge of the blade device.
    Type: Application
    Filed: August 8, 2008
    Publication date: January 22, 2009
    Inventor: Daniel Soderberg
  • Publication number: 20080314543
    Abstract: The invention presents a paper machine for a used paper recycling apparatus being installed in a room of a small shop or the like, friendly to the environment, low in running cost, and capable of maintaining a high confidentiality. The paper machine includes a paper making process unit for manufacturing wet paper from slurry pulp suspension sent from the pulp making section of a preceding process, and a drying process unit for drying the wet paper manufactured in the paper making process unit and making recycled paper, in which a processing conveyor is disposed between the paper making process unit and the drying process unit extending in the overall length of the paper making process and the drying process, and this processing conveyor is manufactured in a form of net belt conveyor having a running mesh belt of mesh structure composed of innumerable mesh cells for filtering and dewatering the pulp suspension.
    Type: Application
    Filed: May 20, 2008
    Publication date: December 25, 2008
    Inventors: Shigeru Tamai, Yuji Koyama
  • Publication number: 20080236775
    Abstract: A method in a paper or board machine for confining a pulp flow coming from the headbox (1), in which by at least one deckle part (2) being above the wire in the operating position the pulp flow coming from the headbox is confined in the lateral direction in the edge area of the wire (3). In the method, by a support part (50) impervious to liquid being below the wire (3) together with the deckle part (2) into connection with which liquid is brought, a pressure effect is provided which furthers the sealing between the deckle board (2) and the wire (3) and intensifies the lubrication of at least one sealing surface of the deckle (2). The invention also relates to an apparatus.
    Type: Application
    Filed: March 28, 2008
    Publication date: October 2, 2008
    Applicant: VAAHTO OY
    Inventor: Aki Laari
  • Patent number: 7429307
    Abstract: In a method of forming a layered fibrous web, the method includes the steps of leading at least two different fiber suspensions through a head box (10), separating the fiber suspensions from each other by a blade device (18, 180), supplying the fiber suspensions to a web forming device (24) and forming a water layer having a transversely uniform flow at an outlet at the end of the blade device (18, 180), such that the water layer constitutes an extension of the blade device and thereby prevents mixing of the fiber suspensions. The blade device (18, 180) can be freely movable in a substantially vertical direction in order to permit an equalization of pressure between the fiber suspension layers separated by the blade device and thereby reducing wake effects downstream the edge of the blade device. A paper machine for carrying out the method is also disclosed.
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: September 30, 2008
    Assignee: STFI, Skogsindustrins Tekniska Forskningsinstitut AB
    Inventor: Daniel Söderberg
  • Publication number: 20080216982
    Abstract: A headbox apparatus for a papermaking machine is disclosed. The headbox apparatus defines a flow path for stock flowing between an upstream location and a downstream slice lip. The apparatus includes a plurality of blocks which are anchored within the flow path between the upstream location and the slice lip. Each block and an adjacent block of the plurality of blocks define therebetween a flow tube for the flow therethrough of the stock. The flow tube has an upstream portion having an upstream and a downstream end. The flow tube has a downstream portion having an upstream and a downstream extremity, the upstream extremity of the downstream portion extending from the downstream end of the upstream portion. The downstream portion of the flow tube has a volume which is greater than a further volume of the upstream portion of the flow tube such that when the stock flows from the upstream portion to the downstream portion of the flow tube, the stock is mixed within the downstream portion.
    Type: Application
    Filed: December 18, 2007
    Publication date: September 11, 2008
    Inventor: James Leroy Ewald
  • Publication number: 20080210400
    Abstract: A pulp feeder for used paper recycling apparatus being installed in a room of a small shop or the like, friendly to the environment, low in running cost, and capable of maintaining a high confidentiality is presented. The pulp feeder includes a partition member disposed slidably on the downside of a running endless mesh belt, and a paper making frame body disposed slidably on the upside of the mesh belt, and an overflow gate is provided in the paper making frame body for keeping constant the water level of the collected pulp suspension, and the pulp suspension supplied in the paper making frame body is collected up to a specific water level defined by the overflow gate, and is uniformly diffused and supplied on the upside of the running mesh belt. Accordingly, if the supply water volume of pulp suspension fluctuates, the water level of pulp suspension staying in the paper making frame body is always kept constant, and the weight of the wet paper manufactured on the mesh belt is stabilized.
    Type: Application
    Filed: January 8, 2008
    Publication date: September 4, 2008
    Inventors: Shigeru Tamai, Yuji Koyama
  • Patent number: 7416636
    Abstract: The present invention relates to a method and apparatus for foam forming, wherein fibrous foam suspension is introduced from the head box (78, 178) of a production machine to the web forming section thereof. At least one solid material is mixed into the foam in the head box (78, 178). The method and the apparatus of the invention are particularly suitable for manufacturing various web-like products of cellulose, glass fiber, aramide, sisal, or other corresponding fibre material.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: August 26, 2008
    Assignee: Ahlstrom Glassfibre Oy
    Inventors: Rainer Blomqvist, Harri Kostamo, Eino Laine, Kay Rokman
  • Publication number: 20080179026
    Abstract: An apparatus for manufacturing security paper, comprising at least one main forming roller, which is provided with a lower portion or forming portion, which is arranged inside a forming box that contains a paper paste, an upper portion or deposition portion, which is arranged below a collecting wire that can move along an advancement direction and is designed to receive, at a collecting face, the sheet formed on the forming roller, and a device for depositing security elements that is arranged upstream of the main forming roller along the advancement direction of the collecting wire and is adapted to deposit the security elements at the collecting face.
    Type: Application
    Filed: June 16, 2005
    Publication date: July 31, 2008
    Inventor: Giancarlo Evangelisti
  • Publication number: 20080099173
    Abstract: To smooth the surface of a flow sheet that is used in a paper machine and make the flow sheet easy to handle, reinforced fibers are disposed in a mold 5. The entire mold 5 is covered with enclosing members 10, 11 so that an enclosed space 12 is formed inside the enclosing members 10, 11. While air in the enclosed space 12 is being suctioned through one end of the enclosed space 12, matrix resin is supplied to the reinforced fibers through the other end of the enclosed space 12 to impregnate the reinforced fibers with the matrix resin, and the matrix resin is hardened, whereby there is obtained a flow sheet whose surface smoothness is 0.25 ?m or less in terms of arithmetical mean roughness.
    Type: Application
    Filed: October 5, 2004
    Publication date: May 1, 2008
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Tetsuo Makino, Akimine Izawa, Keiichi Fujiki, Toshihiro Ito, Hiroshi Odani
  • Publication number: 20080093042
    Abstract: A multiple mode headbox is provided including a support surface, two or more chambers, and an adjustable roof. Each chamber includes a plurality of nozzles adapted to optionally supply papermaking fibers to the support surface. The adjustable roof is operably configured to adjust over a range of movement such that it defines a forming zone between the support surface and at least one chamber in a first mode, and between said support surface and at least one different said chamber in a second mode.
    Type: Application
    Filed: October 20, 2006
    Publication date: April 24, 2008
    Inventors: Henry Skoog, James W. Clark, Joseph K. Baker, John M. Conner
  • Patent number: 7335280
    Abstract: A method in the measurement of the flatness of the flow surface of a headbox of a paper machine is disclosed. The flatness is determined by placing a measuring tool on the flat surface formed by the flow surface and measuring the position of the measuring tool at each point. A measuring sensor is arranged in the measuring tool, in order to determine the distance between the measuring tool and the flat surface. In addition, the dimensions provided by the measuring sensors are read and the position of the measuring tool and the dimensions from the measuring sensors are combined, in order to determine the values of the measured points. The invention also relates to equipment in the measurement of the flatness of the flow surface of the headbox of a paper machine.
    Type: Grant
    Filed: August 23, 2004
    Date of Patent: February 26, 2008
    Assignee: Metso Paper, Inc.
    Inventors: Petri Lampi, Jukka Sallinen
  • Patent number: 7311803
    Abstract: Methods for uniformly distributing a flowing medium to a surface such as that of a rotary liquid permeable roll are disclosed where the flowing medium is distributed by a number of distribution units, the method including distributing the flowing medium to each of the distribution units and separately controlling the flow of the flowing medium to each of the distribution units whereby a uniform flow and an equal amount of the flowing medium is obtained in each of the distribution units. Distribution devices for uniformly distributing a flowing medium to such a surface are also disclosed.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: December 25, 2007
    Assignee: Metso Paper, Inc.
    Inventors: Magnus Danielsson, Jörgen T. Lundberg
  • Patent number: 7198696
    Abstract: A method of controlling the production of filler-containing paper. Filler and retention agent are delivered to a paper manufacturing system in a process of paper manufacture. The amount of filler in the paper is measured, as is also the filler concentration or the total concentration in the white water or the stock. Filler is delivered such that the system will be buffered with filler to a generally pre-determined concentration level. The continual addition of retention agent is based exclusively on the amount of filler in the paper measured at that moment in time. When the measured amount of filler present is lower than a desired level, the addition is increased. When the measured amount of filler present is higher than a desired level, the addition is reduced. The continual addition of filler is based, exclusively on the concentration level of filler measured in the white water or the stock.
    Type: Grant
    Filed: December 7, 2001
    Date of Patent: April 3, 2007
    Assignee: M-real Corporation
    Inventors: Kent Börje Eriksson, Oskar Nordin
  • Patent number: 7166193
    Abstract: A method of ensuring the flatness of a vane that is mounted in a headbox by means of a mounting arrangement including engagement dowels for cooperation with a downstream support wall of a transverse groove, said vane being affected during operation by shearing forces from the stock and by retaining forces from the mounting arrangement. In accordance with the invention outer engagement dowels are mounted at the side edges of the vane to cooperate during a specific period of time, as the only engagement dowels with the downstream support wall in order to take up said shearing forces, whereby tensile stresses will arise in the downstream end portion of the vane in the cross machine direction.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: January 23, 2007
    Assignee: Metso Paper Karlstad AB
    Inventors: Jan Anders Erikson, Tord Gustav Gustavsson, Ingvar Berndt Erik Klerelid, Joakim Norrman
  • 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: 7090746
    Abstract: 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 downstream of the first dewatering zone. The process includes generating an air current in at least one of the wires downstream of the first dewatering zone with the suction box. The air current removes water from the wire and directs it into an inner chamber of the suction box. The invention also refers to a device for implementing the process.
    Type: Grant
    Filed: April 1, 2002
    Date of Patent: August 15, 2006
    Assignee: Andritz AG
    Inventors: Franz Petschauer, Karl Hornhofer, Thomas Kefer, Dietmar Hausjell, Edgar Brogyanyi, Reinhard Diemat
  • Patent number: 7067040
    Abstract: A headbox (10) of a paper machine or such includes a bypass manifold (J1), from which the pulp is conducted by way of pipes (11a1.1, 11a1.2 . . . 11a2.1, 11a2.2 . . . ) of pipe rows in a set of pipes (11) and an intermediate chamber (E) into a turbulence generator (12), or from the bypass manifold (J1) directly into the turbulence generator and by way of the pipes (12a1.1, 12a1.2, . . . ; 12a2.1, 12a2.2 . . . ) of the turbulence generator's (12) pipe rows into a lip cone (K) and further out from the headbox on to a formation wire. The turbulence generator (12) of the headbox includes a fluidization element (14), wherein fluidization is carried out in one stage only and in which structure as little disturbance as possible is then caused to the fluidised flow.
    Type: Grant
    Filed: June 12, 2001
    Date of Patent: June 27, 2006
    Assignee: Metso Paper, Inc.
    Inventors: Hannu Lepomäki, Maarit Tukiainen, Jyrki Huovila
  • Patent number: 7001488
    Abstract: An inlet chamber is connected to a nozzle section by way of a plurality of tubes. Diluting liquid for mixing with paper stock flowing through one or each of said tubes is fed into the tube via annular inlet means. To ensure thorough mixing, channel means leading into the annular inlet means is configured to create turbulent flow of diluting liquid prior to its introduction into the tube, for example, by consisting of a helical or spiral duct, or by being provided internally with baffle means.
    Type: Grant
    Filed: September 23, 2002
    Date of Patent: February 21, 2006
    Assignee: Sandusky Technologies Limited
    Inventors: Harry Bowler, John William Leach
  • 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: 6962646
    Abstract: Multi-layer headbox for a paper machine that includes a plurality of nozzle chambers having outlet gaps located at nozzle chamber ends. Each of the plurality of nozzle chambers are assigned to different layers, and at least one of the plurality of nozzle chambers has a length in a flow direction that is different from a length of at least one other of the plurality of nozzle chambers. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: November 8, 2005
    Assignee: Voith Paper Patent GmbH
    Inventors: Mathias Schwaner, Jürgen Proessl
  • Patent number: 6962647
    Abstract: A headbox, for example, in a pulp or board machine, is suitable for high basis weights which are over 400 g/m2 and for high fiber suspension consistencies which are in a range of 2–5%. The headbox has a turbulence part (1), into which a fiber suspension flows from a tube bank (2), and a slice part (3) which is situated after the turbulence part and from which the fiber suspension flows to a forming section of a fibrous web. The turbulence part (1) of the headbox has at least two passages (5, 6), which converge in the flow direction of the fiber suspension towards the slice part (3). In that connection, the fiber suspension flow is first fluidized in a tortuous turbulence passage part (11) and, after that, it decelerates in another widening deceleration passage (12).
    Type: Grant
    Filed: May 3, 2001
    Date of Patent: November 8, 2005
    Assignee: Metso Paper, Inc.
    Inventors: Markku Ronnila, Jaakko Jantunen, Erkki Ilmoniemi
  • Patent number: 6875312
    Abstract: A method for fluidisation of a pulp flow in the headbox of a paper machine or such. The characteristics of the pulp flow are affected in the headbox's fluidiser (14) in one step only, whereby the height (h1) of the step is at least equal to the average fibre length, and after the fluidiser (14) the biggest permissible step expression in the flow channel in direction z is smaller than the average fibre length.
    Type: Grant
    Filed: June 12, 2001
    Date of Patent: April 5, 2005
    Assignee: Metso Paper, Inc.
    Inventors: Hannu Lepomäki, Hannu Karema, Markku Kellomäki, Maarit Tukiainen
  • Patent number: 6869504
    Abstract: 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 an overflow (14) for the wire water in the discharge duct at the discharge end of the discharge duct (12). The overflow (14) of the discharge duct (12) is located below the deaeration tank (11) and opens to a free air space. The discharge duct (12) includes a branch duct (15a1) for a flow which is passed to the headbox (100).
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: March 22, 2005
    Assignee: Metso Paper, Inc.
    Inventor: Matti Hietaniemi
  • Patent number: 6846386
    Abstract: A method of ensuring the flatness of a vane that is mounted in a headbox by means of a mounting arrangement including engagement dowels for cooperation with a downstream support wall of a transverse groove, said vane being affected during operation by shearing forces from the stock and by retaining forces from the mounting arrangement. In accordance with the invention outer engagement dowels are mounted at the side edges of the vane to cooperate during a specific period of time, as the only engagement dowels with the downstream support wall in order to take up said shearing forces, whereby tensile stresses will arise in the downstream end portion of the vane in the cross machine direction.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: January 25, 2005
    Assignee: Metso Paper Karlstad AB
    Inventors: Jan Anders Erikson, Tord Gustav Gustavsson, Ingvar Berndt Erik Klerelid, Joakim Norrman