Conditioning, Preparing Or Repairing Of Apparatus Patents (Class 162/199)
  • Patent number: 10851330
    Abstract: Methods are provided for improving the papermaking process. In various embodiments, the methods include the application of alkali material in combination with an anionic polymeric dispersant and/or a hydroxyfunctional carboxylic acid to papermaking fabrics such that the application thereof removes contaminants from the papermaking fabrics and improves the drainage of said papermaking fabrics. Such alkali material in combination with an anionic polymeric dispersant and/or a hydroxyfunctional carboxylic acid can be applied as a single aqueous solution, and may further comprise a surfactant.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: December 1, 2020
    Assignee: DuBois Chemicals, Inc.
    Inventors: Harold Laser, Brandon E. Mahler
  • Patent number: 10744545
    Abstract: The disclosure relates to a continuous cleaning method for cleaning a moving fabric in a paper machine. The method uses one or more cleaning stages. In one embodiment, one cleaning stage applies steam to heat and soften contaminants on the fabric followed by the application of water, preferably superheated water, to remove the contaminants. Another cleaning stage may apply hot water, steam and/or superheated water via an encapsulated shower and evacuation chamber making it possible to clean the width of the fabric without substantial rewet.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: August 18, 2020
    Assignee: GPCP IP Holdings LLC
    Inventors: Mark S. Hunter, Dean J. Baumgartner, David Drew Raines, Theodore D. Kennedy, David S. Veldhuizen, Glenn W. Busch, Mitchell S. Edbauer
  • Patent number: 10712288
    Abstract: A surface damage inspection system for a workpiece, to automate efficient and effective appearance inspection using imaging, includes an illumination unit that emits light to an inspection target surface from four directions including frontward and rearward directions in an X direction and rightward and leftward directions in a Y direction; an imaging unit that captures an image of the inspection target surface; a damage detection unit that detects damage at the inspection target surface using the image of the inspection target surface; a robot to which a damage inspection device including the illumination unit and the damage detection unit is attached; a table on which the workpiece is to be placed; and a controller that controls drive of the robot and the damage inspection device so as to make the damage inspection device inspect the workpiece on the table or the workpiece gripped by the robot.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: July 14, 2020
    Assignee: FANUC CORPORATION
    Inventor: Yasushi Okajima
  • Patent number: 10695792
    Abstract: A processing liquid is supplied to an upper surface of a horizontally-held substrate to form a liquid film of the processing liquid that covers an entirety of the substrate upper surface. The substrate is heated to evaporate the processing liquid in contact with the upper surface of the substrate to form a gas phase layer between the upper surface of the substrate and the liquid film of the processing liquid. After the gas phase layer has been formed, a gas is blown onto the liquid film above the substrate to open a hole in the liquid film. The gas is blown onto a region inside the hole in the liquid film to move the liquid film on the gas phase layer. A direction of a gas stream at a substrate outer peripheral portion is changed to remove the liquid film at the substrate outer peripheral portion.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: June 30, 2020
    Assignee: SCREEN Holdings Co., Ltd.
    Inventors: Manabu Okutani, Takashi Ota, Hiroshi Abe, Naohiko Yoshihara
  • Patent number: 10654060
    Abstract: To improve the measurement accuracy of the state of the jet. The nozzle inspection apparatus includes a pump, a nozzle, a body having a cylinder, a pressure receiving plate receiving the jet generated by the nozzle, a piston load meter fixed to the pressure receiving plate and including a stem reciprocating in the cylinder, and a load meter measuring the load on the pressure receiving plate, and a moving mechanism moving the nozzle and the pressure receiving plate relative to each other.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: May 19, 2020
    Assignee: SUGINO MACHINE LIMITED
    Inventors: Yoshiteru Kawamori, Toyoaki Mitsue, Tomio Sawasaki
  • Patent number: 10626355
    Abstract: Compositions and methods for cleaning wet strength resin contamination from papermaking equipment and/or for preventing wet strength resins from contaminating papermaking equipment using the compositions are disclosed. The compositions comprise an aqueous solution of a weak organic acid; a surfactant, preferably a nonionic surfactant, a divalent metal ion containing catalyst and optionally a glycol ether containing solvent.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: April 21, 2020
    Assignee: Kemira Oyj
    Inventors: Yong Zou, Yuping Luo, Anna Casasús
  • Patent number: 10619299
    Abstract: To provide a contamination inhibitor composition capable of effectively inhibiting pitch contamination on a dry part. The present invention is a contamination inhibitor composition 1 which is imparted to a dry part D of a paper-making machine, and comprising a film forming agent and a gelling agent, wherein the film forming agent is an emulsion consisting of water, a modified silicone and an emulsifier and the gelling agent is a compound represented by the following formula (1): [in the formula (1), R1 each independently represents a hydrogen atom, a hydroxyl group, a carboxyl group or a hydrocarbon group optionally having a substituent having 1 to 3 carbon atoms, R2 each independently represents a hydroxyl group or a carboxyl group, R3 represents a hydrogen atom, a hydroxyl group or a carboxyl group, m is an integer of 1 to 5, and n is an integer of 0 to 5.].
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: April 14, 2020
    Assignee: MAINTECH CO., LTD.
    Inventors: Hiroshi Sekiya, Daisuke Kobayashi, Hiraku Sawada, Shinichiro Ogoda, Kazuyuki Yusa
  • Patent number: 10519598
    Abstract: Provided are a pitch-formation suppressor and the like which can be widely applied independently of the substance that causes a pitch and of the situation to generate a pitch in a paper manufacturing process, and which can effectively suppress and prevent the troubles due to the pitch, such as foreign spots and defects in a paper, breakage of a paper, and lowering of workability. This pitch-formation suppressor comprises an alkaline solution in which a phenol resin and/or a modified phenol resin is dissolved, or an acid solution in which a phenol resin and/or a modified phenol resin is dissolved.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: December 31, 2019
    Assignees: KURITA WATER INDUSTRIES LTD., GUN EI CHEMICAL INDUSTRY CO., LTD.
    Inventors: Satoshi Wada, Yuko Okusa, Chigusa Taguchi, Yukio Abe, Michiyasu Yamazaki
  • Patent number: 10322946
    Abstract: The present invention relates to a process for the reduction of pitch in an aqueous medium generated in a papermaking or pulping process, comprising the following steps: a) providing an aqueous medium comprising pitch generated in a papermaking or pulping process; b) providing a ground calcium carbonate and/or a precipitated calcium carbonate; c) providing a hydrophobizing agent selected from an aliphatic carboxylic acid having between 5 and 24 carbon atoms; d) contacting the ground calcium carbonate and/or the precipitated calcium carbonate of step b) with the hydrophobizing agent of step c) for obtaining a hydrophobized ground calcium carbonate and/or a hydrophobized precipitated calcium carbonate; and e) contacting the aqueous medium provided in step a) with the hydrophobized ground calcium carbonate and/or the hydrophobized precipitated calcium carbonate obtained in step d), to the use of a hydrophobized ground calcium carbonate and/or a hydrophobized ground calcium carbonate for reducing the amount of pi
    Type: Grant
    Filed: July 10, 2012
    Date of Patent: June 18, 2019
    Assignee: Omya International AG
    Inventors: Daniel Gantenbein, Joachim Schoelkopf, Patrick A. C. Gane
  • Patent number: 10253454
    Abstract: A method for controlling the deposition of stickies in pulping and papermaking processes comprises adding to fiber pulp or stock an additive comprising an organo-modified siloxane.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: April 9, 2019
    Inventors: Birgit Blasing, Siegmund Fridrischak, Bernhard Nellessen, Achim Schenker
  • Patent number: 9797091
    Abstract: A method of cleaning or conditioning a paper-making press felt or other substrate is described. The method includes treating the paper-making press felt or other substrate with a formulation that contains at least solketal.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: October 24, 2017
    Assignee: Buckman Laboratories International, Inc.
    Inventors: Kooi Hock Loo, Lili Liu
  • Patent number: 9732471
    Abstract: A drainage device for removing dirt particles and wastewater from a cleaning head for cleaning a dryer screen of a paper production plant includes an air-water separation container. The air-water separation container includes an air outlet, a wastewater outlet and an inlet opening for receiving the dirt particles and the wastewater from the cleaning head. The air-water separation container is connected to the cleaning head so as to be movable transversely relative to the dryer screen together with the cleaning head.
    Type: Grant
    Filed: June 1, 2015
    Date of Patent: August 15, 2017
    Assignee: PAPRIMA INDUSTRIES INC.
    Inventor: Roman Caspar
  • Patent number: 9573214
    Abstract: A method of applying solder includes providing a first roller and a second roller, where at least one of the first and second rollers has an outer surface comprising a solder wicking material. A metallic article is provided, the metallic article having a first side and a second side, and having an opening extending from the first side to the second side. The metallic article is dipped in solder, where the dipping forms an initial coating of solder on the metallic article. After the dipping, the metallic article is fed between the first and second rollers. The wicking material removes solder from the metallic article, such that a solder thickness of the initial coating on the metallic article is reduced after exiting the first and second rollers.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: February 21, 2017
    Assignee: Merlin Solar Technologies, Inc.
    Inventors: Alejandro de la Fuente Vornbrock, Venkateswaran Subbaraman
  • Patent number: 9222221
    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: July 14, 2014
    Date of Patent: December 29, 2015
    Assignee: PAPRIMA INDUSTRIES INC.
    Inventor: Roman Caspar
  • Publication number: 20140374046
    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: July 14, 2014
    Publication date: December 25, 2014
    Inventor: Roman Caspar
  • Patent number: 8865263
    Abstract: Compositions and methods for reduction in adhesion between wet paper web and roll surfaces in papermaking process are disclosed. The method is particularly useful for improvements in press section roll release.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: October 21, 2014
    Assignee: Solenis Technologies, L.P.
    Inventors: Davit E. Sharoyan, Tien-Feng Ling, Scott T. Schnelle
  • Publication number: 20140290885
    Abstract: A sheet-forming unit of a papermaking machine includes a headbox which outputs a suspension jet and an inner fabric and an outer fabric, which in each case form a loop. A forming element is arranged within the loop of the inner fabric and guide rolls and a white-water box are arranged within the loop of the outer fabric. The inner fabric and the outer fabric form a gap for receiving the suspension jet and jointly wrap around the forming element at least partially in a wraparound region. A machine-wide guide element is arranged in the wraparound region within the loop of the outer fabric and/or, in the region of at least one of the guide rolls of the outer fabric, a machine-wide guide apparatus is provided outside the chamber which is formed by the loop of the outer fabric.
    Type: Application
    Filed: June 18, 2014
    Publication date: October 2, 2014
    Applicant: Voith Patent GmbH
    Inventors: Christian Schmid, Ulrich Flühler
  • 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: 8784606
    Abstract: The invention relates to a method for reducing the negative effects of adhesive contaminants in the processing of waste paper, wherein an aqueous polymer dispersion comprising one component A and one component B for coagulation and detackification of stickies is added during the processing of waste paper, wherein component A is a homo- and/or copolymer of methyl methacrylate, acrylate and/or styrene and component B is a styrene copolymer having acrylic acid, maleimide and/or maleic acid hydride. The polymer dispersion can optionally comprise another component C, a cationic fixing agent that supports the coagulation of the stickies.
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: July 22, 2014
    Assignee: Clariant Finance (BVI) Limited
    Inventors: Achim Kohler, John Stuart Cowman, Damien Corpet, Antonella Leone-Kammler
  • Patent number: 8784613
    Abstract: A method is provided for controlling organic contaminants, such as xylans, pitch or both, that interfere with bleaching of fibers and/or cause other interference(s) in papermaking systems. The method includes contacting fibers before any bleaching thereof with a composition which contains a hemicellulolytic enzyme and an organic contaminant removal adjuvant to liberate the organic contaminants from the fibers. The treated fibers can then be bleached and further used, for example, in making paper. The present invention also relates to the treatment compositions and to paper products made with fiber materials treated with these compositions. A method of enhancing enzymatic degradation of a substrate as well as formulations and systems for achieving the same are also provided. Various substrates can be degraded or otherwise processed, including biomass, paper mill sludge, and animal hides. Enzymatic degradation can be enhanced by including one or more polymeric surfactants.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: July 22, 2014
    Assignee: Buckman Laboratories International, Inc.
    Inventors: Stephen D. Bryant, Kevin J. MacDonald, Bernard Janse, Xiangdong Zhou, Philip Hoekstra, Daniel E. Glover
  • Patent number: 8778141
    Abstract: The invention relates to a hand-held apparatus for controlling the condition of a circulating band in a papermaking machine; the apparatus comprises a hand-held body which carries: a moisture measuring device, equipped with at least one microwave sensor; a permeability measuring device, comprising at least one water delivery nozzle and a flowmeter associated with the nozzle; and a control unit connected to the measuring devices for processing signals coming therefrom; the body is equipped with at least one handle portion to be grasped by an operator for manually moving and maneuvering the apparatus.
    Type: Grant
    Filed: September 19, 2011
    Date of Patent: July 15, 2014
    Assignee: S.A. Giuseppe Cristini S.p.A.
    Inventors: Luca Canali, Giovanni Cristini
  • Publication number: 20140130996
    Abstract: Apparatuses, processes, and systems for implementing techniques for determining characteristics of a papermaking fabric. The techniques include forming a representation of a portion of the surface of the fabric, with the representation showing the knuckles and pockets in the surface. The representation can be formed, for example, in pressure measurement film, in wax paper, or as a photograph. An image is generated from the representation, and the image is analyzed to determine characteristics of the surface of the fabric, such as knuckle sizes and pocket sizes. The depth of pockets in the fabric can also be determined. The techniques can be used in processes for analyzing wear of a fabric, and for obtaining a fabric for making a paper product with a particular three-dimensional structure.
    Type: Application
    Filed: November 12, 2013
    Publication date: May 15, 2014
    Applicant: GEORGIA-PACIFIC CONSUMER PRODUCTS LP
    Inventor: Daniel H. Sze
  • 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
  • Publication number: 20140110074
    Abstract: A method and system for reducing waste water from a paper machine system. The system involves splitting a flow output from a seal water tank. With a portion of the flow output being used to maintain a fluid level within a wire pit, and the balance being recycled to the system as substantially clean water.
    Type: Application
    Filed: October 19, 2012
    Publication date: April 24, 2014
    Inventor: Theodore Caouette
  • 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: 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
  • 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
  • Patent number: 8551292
    Abstract: Herein provided are methods for determining deposition of contaminants significantly influencing machine runnability or product quality in manufacturing processes of pulp and paper, especially determining the degree of deposition and the morphology of deposits of sticky contaminants or pitch and for evaluating the effect of chemicals for reducing deposition. In a manufacturing process of pulp and paper is used a method comprising: determining the degree of deposition of a contaminant from a liquid or slurry on a quartz crystal oscillator; and quantifying the morphology of deposits on the surface of the quartz crystal oscillator by image analysis. Further, a method comprising adding a chemical for reducing deposition to the liquid or slurry and then quantifying the degree of deposition and the morphology of deposits is used to evaluate the effect of the chemical.
    Type: Grant
    Filed: October 13, 2010
    Date of Patent: October 8, 2013
    Assignee: Nippon Paper Industries Co., Ltd.
    Inventors: Shisei Goto, Yasunobu Ooka, Kosuke Okamoto
  • Patent number: 8524042
    Abstract: A method for inhibiting resinous and sticky substances from filling or forming deposits on or within papermaking forming wire, by applying to said wire an effective inhibiting amount of a composition comprising at least one cationic agent selected from the group consisting of (a) cationic polyureas, (b) hydrophobically modified cationic polymers, (c) alkylammonium or/and alkylimidazolium salts, and optionally at least one nonionic amphiphilic copolymer selected from (i) hydrophobically modified polyethylene glycols], (ii) hydrophobically modified cellulose ethers, (iii) copolymers of vinyl alcohol and vinyl alkonate, (iv) polyoxyalkylene block copolymers, and (v) hydrophilically modified polydimethylsiloxanes.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: September 3, 2013
    Assignee: Hercules Incorporated
    Inventors: Fushan Zhang, Tien-Feng Ling
  • Patent number: 8388806
    Abstract: Methods for inhibiting the depositions of organic contaminants from pulp in pulp and papermaking systems are disclosed. Hydrophobically modified poly[ethylene glycol] are added to the pulp or applied to deposition-prone surfaces of a papermaking system.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: March 5, 2013
    Assignee: Hercules Incorporated
    Inventors: Qu-Ming Gu, Huai N. Cheng, William S. Carey, Robert A. Gelman, Jennifer L. Rittenhouse-Pruss, Erin A. S. Doherty
  • Patent number: 8372245
    Abstract: A roll assembly (10) for a fiber-web machine has at least at one end thereof, with a bearing assembly (20) with a bearing housing, which bearing housing (18) has a flexible and attenuating attachment arrangement by means of which the roll can be attached in a flexible and attenuating manner on the frame or foundation (22) of the fiber-web machine. A mass absorber (24) is arranged in conjunction with the bearing housing, whereby the damping of the vibration of the roll assembly is arranged by the cooperation of the bearing housing that is attached in a flexible and attenuating manner and the mass absorber (24) in conjunction therewith. The invention also relates to a method of attenuating the vibration of a roll of a fiber-web machine.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: February 12, 2013
    Assignee: Metso Paper, Inc.
    Inventor: Marko Jorkama
  • Patent number: 8372244
    Abstract: The present invention relates to a process for the control of pitch in an aqueous medium by adding surface-reacted natural calcium carbonate or an aqueous suspension comprising surface-reacted calcium carbonate and having a pH greater than 6.0 measured at 20° C., to the medium, wherein the surface-reacted calcium carbonate is a reaction product of natural calcium carbonate with carbon dioxide and one or more acids, the use of the surface-reacted natural calcium carbonate for pitch control, as well as to a combination of a surface-reacted natural calcium carbonate and talc for pitch control, and the resulting composites.
    Type: Grant
    Filed: May 4, 2011
    Date of Patent: February 12, 2013
    Assignee: Omya Development AG
    Inventors: Patrick A. C. Gane, Joachim Schölkopf, Daniel Gantenbein
  • 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
  • Publication number: 20120291973
    Abstract: A clothing for supporting a wet paper web for dewatering is provided, comprising a dewatering fabric extending in a machine direction and formed only from a woven material to have a single, substantially consistent, permeability. A pair of laterally-spaced strip portions extend along the dewatering fabric in the machine direction, with each being substantially and consistently impermeable to air and forming a substantially and consistently smooth non-water-retaining surface. The strip portions define a permeable web-carrying portion of the dewatering fabric therebetween, wherein the paper web carried thereby extends over the entire width thereof. The permeable web-carrying portion allows air to flow therethrough, exclusively of the impermeable strip portions, such that the wet paper web carried only by the permeable web-carrying portion is dewatered. The width of the permeable web-carrying portion thereby defines the width of the wet paper web dried thereon. Associated systems and methods are also provided.
    Type: Application
    Filed: August 2, 2012
    Publication date: November 22, 2012
    Applicant: Albany International Corp.
    Inventors: Joseph R. PILSBURY, Stacie R. Dede
  • Patent number: 8303773
    Abstract: A method of producing a tissue paper web in a papermaking machine including the steps of forming the web on a skin, selecting a quality of the web, bypassing a dewatering apparatus, passing the skin and web through a nip and conveying the web to a drying cylinder from the skin. The web is formed in a forming section of the machine from a pulp suspension on the skin. In the selecting step a quality of the web is selected thereby defining a quality selection of absorbency or tear resistance. The bypassing step includes bypassing the dewatering apparatus with the web and selecting a type of the skin dependent upon the quality selection.
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: November 6, 2012
    Assignee: Voith Patent GmbH
    Inventors: Thomas Scherb, Luiz Carlos Silva, Rogerio Berardi, Danilo Oyakawa
  • Publication number: 20120267063
    Abstract: A structuring layer of a structuring belt for structuring a wet fibrous web in a press section of a tissue papermaking machine for manufacturing high bulk tissue paper, the structuring layer having a web-carrying side with a surface for cooperating with the fibrous web, the surface having depressions distributed over the web-carrying side and forming a three-dimensional structure of the surface. The depressions altogether constitute 20-80% of the surface. Each depression has a dimension l of 0.25-2.5 mm in a first direction in the plane of the top surface area, a dimension b of 0.25-2.0 mm in a second direction in the plane of the top surface area, such directions being at right angles to each other, a mean depth d of 0.05-0.6 mm, and an area a as measured in the plane of the top surface area of 0.063-5.0 mm2.
    Type: Application
    Filed: July 9, 2012
    Publication date: October 25, 2012
    Applicant: Albany International Corp.
    Inventors: Ingvar Berndt Erik KLERELID, Ola Thomasson, Bo-Christer Aberg, Cary P. Johnson, John J. LaFond
  • 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
  • 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: 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
  • Publication number: 20120043040
    Abstract: A method for inhibiting resinous and sticky substances from filling or forming deposits on or within papermaking forming wire, by applying to said wire an effective inhibiting amount of a composition comprising at least one cationic agent selected from the group consisting of (a) cationic polyureas, (b) hydrophobically modified cationic polymers, (c) alkylammonium or/and alkylimidazolium salts, and optionally at least one nonionic amphiphilic copolymer selected from (i) hydrophobically modified polyethylene glycols], (ii) hydrophobically modified cellulose ethers, (iii) copolymers of vinyl alcohol and vinyl alkonate, (iv) polyoxyalkylene block copolymers, and (v) hydrophilically modified polydimethylsiloxanes.
    Type: Application
    Filed: August 22, 2011
    Publication date: February 23, 2012
    Inventors: Fushan Zhang, Tien-Feng Ling
  • Publication number: 20120000622
    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: Application
    Filed: September 21, 2010
    Publication date: January 5, 2012
    Inventors: David I. Weinstein, Peter E. Perry, James P. Rivard, Pawel Cirocki
  • 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: 20110294386
    Abstract: The invention relates to paper machine clothing, in particular a press felt for a paper, cardboard or tissue machine, comprising a load absorbing base structure that extends in longitudinal and cross direction of the clothing and which comprises, and in particular is formed by: a) a longitudinal reinforcement module substantially providing the dimensional stability in longitudinal direction of the clothing, and b) a transverse reinforcement module substantially providing the dimensional stability in cross direction of the clothing, whereby the transverse reinforcement module and the longitudinal reinforcement module are arranged one on top of the other and are interconnected with each other.
    Type: Application
    Filed: May 19, 2011
    Publication date: December 1, 2011
    Inventors: Uwe Köckritz, Hubert Walkenhaus
  • Patent number: 8052840
    Abstract: Compositions and methods for the removal of resin from wood chips processed in a Kraft pulping process are disclosed. The method is particularly useful for removing triterpene and triterpenoid resin.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: November 8, 2011
    Assignee: Hercules Incorporated
    Inventor: Davit E. Sharoyan
  • Publication number: 20110180223
    Abstract: A tissue papermaking machine is described, comprising a wet section (2) and a press section (3) comprising a single press (11) with first and second press elements (12, 13) forming a press nip (N1), and with a press felt (17) running through the press nip in contact with the formed fibre web (1?), whereby the second press element is arranged inside the loop of the press M felt, and a smooth belt (14) runs through the press nip in contact with the formed fibre web, whereby the first press element is arranged inside the loop of the belt, and a transfer roll (16) arranged inside the loop of the belt forming a transfer nip (N2) with a drying surface (20), whereby the smooth belt carries the fibre web between the press nip and the transfer nip. Furthermore, the machine has a dry section (4) for final drying of the fibre web (1?).
    Type: Application
    Filed: September 16, 2009
    Publication date: July 28, 2011
    Inventors: Ingvar Klerelid, Ola Thomasson
  • Patent number: 7972479
    Abstract: The present invention relates to a process for the control of pitch in an aqueous medium by adding surface-reacted natural calcium carbonate or an aqueous suspension comprising surface-reacted calcium carbonate and having a pH greater than 6.0 measured at 20° C., to the medium, wherein the surface-reacted calcium carbonate is a reaction product of natural calcium carbonate with carbon dioxide and one or more acids, the use of the surface-reacted natural calcium carbonate for pitch control, as well as to a combination of a surface-reacted natural calcium carbonate and talc for pitch control, and the resulting composites.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: July 5, 2011
    Assignee: Omya Development AG
    Inventors: Patrick A. C. Gane, Joachim Schölkopf, Daniel Gantenbein