Member Opposed To Work Back-up Patents (Class 118/126)
  • Patent number: 10300503
    Abstract: A fluid application system includes: an application apparatus that discharges a fluid to a workpiece; a movement apparatus that moves the application apparatus and the workpiece; and a control apparatus. At the time of adjusting the output of a power source to thereby vary the discharge amount of the fluid from the nozzle by a target variation amount F1, the control apparatus sets the output of the power source to a value beyond a theoretical output N1 of the power source obtained from the target variation amount F1 of the discharge amount, and then sets the output of the power source to the theoretical output N1 such that the change amount of the internal pressure of the nozzle is coincident with an amount P1 by which the internal pressure of the nozzle needs to change, the amount P1 being obtained from the target variation amount F1 of the discharge amount.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: May 28, 2019
    Assignee: HEISHIN LTD.
    Inventors: Masaki Mori, Yoshihiro Sugino, Hideaki Wakizaka
  • Patent number: 10150136
    Abstract: A fluid application device having an applicator head, a slot die assembly and a securing mechanism for securing the slot die assembly to the applicator head is provided. The slot die assembly includes a die extruder comprising one or more fluid input ports configured to receive a fluid from the applicator head, a shim positioned adjacent to the die extruder, and a plate positioned adjacent to the shim on a side of the shim opposite from the die extruder. The securing mechanism includes a securing component at one of the applicator head and the slot die assembly and a corresponding securing component at the other of the applicator head and slot die assembly.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: December 11, 2018
    Assignee: ILLINOIS TOOL WORKS INC.
    Inventors: Mel Steven Lessley, Jonathan David Cunningham, Andreas Pahl, Andrew S. Ayers
  • Publication number: 20150118389
    Abstract: Provided are an apparatus and method for coating a separator. The method includes supplying a coating solution to a receiving chamber; applying the coating solution received in the receiving chamber to a surface of the separator through a coating bar; collecting coating solution overflowing the receiving chamber by a collection chamber surrounding the receiving chamber; and returning coating solution from the collection chamber to the receiving chamber through a return line.
    Type: Application
    Filed: October 29, 2014
    Publication date: April 30, 2015
    Inventors: Woo Jin JANG, Yun Gi KIM, Jin Kyu PARK, Sang Ho LEE
  • Patent number: 8539904
    Abstract: A rod bed assembly (1, 11, 111) has a holder (2) made of a composite material according to a continuous primary molding method, a rod bed (3) made of a polymer according to a continuous primary molding method, and a doctor rod (4) rotatably supported in a bearing recess (34) on the front side of the rod bed. The holder (2) is formed such that the rod bed (3) and the doctor rod (4) are insertable into and removable from a socket provided in the holder in the radial direction of the doctor rod (4). The rod bed (3) has closed cavities for saving material.
    Type: Grant
    Filed: May 17, 2010
    Date of Patent: September 24, 2013
    Assignee: Metso Paper, Inc.
    Inventors: Timo S. Lintula, Ari-Pekka Kautto, Sami Kuparinen
  • Patent number: 8438988
    Abstract: A powdering device includes: a powder placing member having a placing section on which a powder fed from a storage container is placed; a first scraping member for scraping the powder on the placing section of the powder placing member, so that a constant amount of the powder remains on the placing section; and a second scraping member for scraping off the resultant constant-amount powder remaining on the placing section, and the powdering device transfers the scraped powder with an air flow, and sprays the powder thus transferred onto a printed sheet.
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: May 14, 2013
    Assignee: Komori Corporation
    Inventor: Ikuo Sugimoto
  • Patent number: 8286577
    Abstract: A dosing device for the application of a coating mix (6) onto a running web, in particular a paper or paperboard web (1), which device comprises a rod (8) that is supported revolvingly over its entire length in a rod cradle (12), and a pressing device (13) acting on the rod cradle and producing a pressure of the rod onto the web (1) and onto the holding-on device (2, 17, 15) of the web, the rod (8) being provided with a wear resistant surface coating (15) with a hardness of about 10 to about 100 according to Shore A. The invention also relates to methods of using said rod, and to said revolving rod.
    Type: Grant
    Filed: August 30, 2006
    Date of Patent: October 16, 2012
    Assignee: Mattssonforetagen I Uddevalla Aktiebolag
    Inventors: Tore Eriksson, Hakan Karlsson
  • Patent number: 8252380
    Abstract: A method in connection with coating, comprising a running web (8) arranged to be coated with a coating mix (11), coating means (1) arranged in connection with said web (8), a coating surface (6, 7) at the coating means (1) and arranged in contact with said web (8) to dose said coating mix (11), and said coating means (1) being provided with at least a first coating surface (6) and a second coating surface (7), in such a way that it is possible at said running web (8) to switch between the one (6) and the other (7) surfaces while at least one of said surfaces (6, 7) is in an active contact position.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: August 28, 2012
    Assignee: Mattssonforetagen I Uddevalla Akttiebolag
    Inventor: Håkan Karlsson
  • Patent number: 8082875
    Abstract: The present invention provides a doctor device for metering and/or equalizing a liquid-to-pasty medium applied to a running surface, wherein in the case of direct application the surface is a running paper web, paperboard web or other fibrous web and in the case of indirect application a transfer element which transfers the application medium to the fibrous web. The doctor device has a holder arranged on a support beam for accommodating a doctor element used for the metering and/or equalizing. The holder has a first fixed support face bar and a second moving support face bar, wherein to open and close the holder the second support face bar is displaceable respectively away from the first support face bar or toward it such that in the closed state of the holder the doctor element is fixed from the outside and in the open state of the holder it is released.
    Type: Grant
    Filed: February 20, 2007
    Date of Patent: December 27, 2011
    Assignee: Voith Patent GmbH
    Inventors: Christoph Henninger, Benjamin Mèndez-Gallon, Ingo Gottwald, Franz Fischer
  • Patent number: 8028648
    Abstract: A rod cradle for a film, coating, or dam rod includes a frame profile (12) equipped with an insert groove (14), an insert (16) fitted into the insert groove, and the insert having a rod groove (18) and a rod (28) therein. The device has locking elements (24) for locking the insert (16) into the frame profile (12). There are, on the sides of the insert groove, edges (20) through which the insert passes into the insert groove when the rod is not present. On the sides of the rod groove (16) there are opposing lips (22). The lips (22) have vertices (74) through which the rod (28) can pass without damage to the rod or the insert so that the rod can be inserted in to the rod groove (18) and lock the insert (16) in the insert groove (14) of the frame profile.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: October 4, 2011
    Assignee: Metso Paper, Inc.
    Inventors: Arto Karusalmi, Ari-Pekka Kautto, Sami Kuparinen, Vesa Lamberg, Pekka Ylönen
  • 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: 7798093
    Abstract: A cradle for a film, coating, or sealing rod has a profile (10) that includes a base part (11), a rod groove (16), and a body part (14) between them. The rod groove (16) is arranged to receive the rod (12) between lips (20, 20?) edging the rod groove (16). The circumference lying against the rod (12) is formed at least partly of a slider piece (22), which is an insert-molded part of the profile (10), and which is of a material other than the material of the base part (11) and the body part (14).
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: September 21, 2010
    Assignee: Metso Paper, Inc.
    Inventors: Ari-Pekka Kautto, Sami Kuparinen, Timo Lintula
  • Patent number: 7790218
    Abstract: A method for forming an electrode for a battery includes the step of rotating a gravure roll while allowing the gravure roll to abut against the surface of an electrode, thereby applying a coating fluid serving as a precursor of a porous layer on the surface of the electrode. In this step, part of the coating fluid applied to the surface of the electrode is continuously removed by allowing a scraper to abut against the surface of the electrode, and the width of a part of the scraper abutting against the surface of the electrode is adjusted according to variations in the width of each of linear portions of the porous layer left after the removal of the part of the coating fluid.
    Type: Grant
    Filed: February 15, 2007
    Date of Patent: September 7, 2010
    Assignee: Panasonic Corporation
    Inventor: Tetsuya Hayashi
  • Patent number: 7785668
    Abstract: A doctor method and apparatus is disclosed and includes a doctor roll (12) supported in a coater (1) suitable for applying coating to a paper web surface or a roll surface (4) for subsequent transfer to the paper web. The doctor includes a doctor roll (12), a support (11) for the doctor roll (12), a front support (3) for holding the roll support (11) and a rear support or retainer (18) cooperates with and helps stabilize the support (11) and doctor roll (12). The present invention minimizes the variation moving of the doctor roll (12) has on the coating on the moving surface (4), be it web or roll, and thus can improve coating quality.
    Type: Grant
    Filed: December 5, 2003
    Date of Patent: August 31, 2010
    Inventor: Wayne A. Damrau
  • Patent number: 7669550
    Abstract: A device for applying a medium in the form of a liquid or a paste to a moving substrate, the substrate being a surface of a web of paper, a paper board, fibrous material and/or a transfer element including an application chamber, a first element, a second element and at least one limiting element. The first element is associated with the application chamber on an output side of the application chamber in a direction of movement of the moving substrate. The second element is associated with an input side of the application chamber. The at least one limiting element is associated with a lateral end of the application chamber. The at least one limiting element adjusting a width of application of the medium on the moving substrate. The at least one limiting element having a flexible sealing plate that substantially seals a space between the moving substrate, the first element and the second element.
    Type: Grant
    Filed: June 7, 2005
    Date of Patent: March 2, 2010
    Assignee: Voith Patent GmbH
    Inventors: Christoph Henninger, Horst Kaipf, Martin Schaubmaier, Michael Heitzinger, Ruediger Keinberger
  • Patent number: 7650850
    Abstract: The present invention provides a liquid applying apparatus and an ink jet printing apparatus which, when supplying a liquid to and/or collecting the liquid from a liquid holding member holding an application liquid in a space formed by a roller being abutted, can suppress the leakage of the liquid from the liquid holding member. A pump is provided in a collecting path between a storage tank and a liquid collecting port formed in the liquid holding member that is liquid-tight. The pump is driven to circulate the application liquid between the storage tank and the liquid holding member.
    Type: Grant
    Filed: February 8, 2005
    Date of Patent: January 26, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Osamu Iwasaki, Naoji Otsuka, Yoshinori Nakagawa
  • Patent number: 7387820
    Abstract: Equipment for changing a blade (43) in a coating device (51) changes several blades (43) arranged in a band (43). The equipment includes reels (11, 40) connected to the ends of the blade holder (45), for holding the reeled unused and used band (43); transfer devices (13, 20) for moving the band (43) in connection with the blade holder (45), and lifting devices (17) for lifting the band (43) up and lowering it into the blade holder (45). Indentations (44) at least the length of the hollow shaft (52) are arranged at regular intervals on the band (43), and are arranged to permit the blade (43) to be lowered into the blade holder (45).
    Type: Grant
    Filed: February 19, 2004
    Date of Patent: June 17, 2008
    Assignee: Metso Paper, Inc.
    Inventors: Ville Nikkanen, Seppo Parviainen, Markku Vaanola
  • Patent number: 7351289
    Abstract: A device for applying a liquid to pasty medium to a moving surface, the moving surface in the case of direct application being the surface of a paper, board or other fibrous web. In the case of indirect application the moving surface being the surface of a transfer element which transfers the application medium to the surface of the fibrous web. The device includes an applicator for applying the medium and a doctor device arranged downstream in the running direction of the moving surface for doctoring off and/or equalizing the medium applied to the moving surface. In order to collect excess medium that has not remained on the moving surface and/or has not reached the latter, a flexible collecting part covering the interspace between applicator and doctor device is provided, which extends transversely with respect to the running direction of the moving surface and parallel to the applicator and the doctor device.
    Type: Grant
    Filed: June 9, 2005
    Date of Patent: April 1, 2008
    Assignee: Voith Paper Patent GmbH
    Inventors: Joachim Grabscheid, Martin Kustermann, Stefan Reich, Eckard Wozny, Manfred Ueberschaer
  • Patent number: 7332033
    Abstract: A doctor bed is provided for holding a circularly cylindrical metering rod, including a housing of a homogenous material, which is designed with a cross section at right angles to the cylinder longitudinal axis of the metering rod and has a circularly cylindrical recess which surrounds the metering rod with a form fit over at least 180°. The doctor bed is arranged on a machine processing a moving material web, there being arranged on the housing, in the region of the recess, at least one groove running parallel to the cylinder longitudinal axis of the metering rod. A wiping strip is arranged detachably between the metering rod and the doctor bed.
    Type: Grant
    Filed: June 7, 2005
    Date of Patent: February 19, 2008
    Assignee: Voith Paper Patent GmbH
    Inventors: Christoph Henninger, Horst Kaipf, Martin Schaubmaier, Michael Heitzinger, Ruediger Keinberger
  • Patent number: 7112348
    Abstract: The coating apparatus and method enable the coating liquid having been scraped-off to be reused without doing any one of the fluid adjusting treatment and the filtering treatment, while maintaining the features of the scraping-off type of extrusion coater, which is suitable for obtaining a uniform and extremely thin coating film. The coating head is provided with two slits: a coating slit and a recovering slit, and the excessive coating liquid having been discharged through the coating slit and applied to the web is scraped-off and recovered through the recovering slit.
    Type: Grant
    Filed: December 11, 2003
    Date of Patent: September 26, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toshihiro Mandai, Mikio Tomaru, Norio Shibata
  • Patent number: 7104216
    Abstract: A coating liquid application apparatus is capable of automatically and properly applying to a printed surface of a print medium a coating liquid, such as coating materials that improve weatherability of the printed surface. For that purpose, the apparatus includes a pair of rollers in rotating contact with both surfaces of the print medium, one of the rollers in contact with a printed surface of the print medium being used as an application roller, and a coating liquid supply member to supply the coating liquid stored in a coating liquid reservoir to the application roller.
    Type: Grant
    Filed: July 17, 2002
    Date of Patent: September 12, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshiaki Suzuki, Nobuhiko Takekoshi, Tetsuo Kikuchi
  • Patent number: 7101438
    Abstract: A coater for dispersed slurry capable of coating coated dispersed slurry on a nonwoven cloth-like base material while bringing the slurry into contact with the material, comprising a net conveyor for transferring the nonwoven cloth-like base material, a supply means for supplying the dispersed slurry onto the net conveyor, and a coating roll for forming a coating layer of a specified thickness by pressing, from the upper side thereof, the dispersed slurry supplied onto the nonwoven cloth-like base material, wherein this coating roll is allowed to come into direct contact with the dispersed slurry on the peripheral surface of the nonwoven cloth-like base material or allowed to come into contact with the dispersed slurry through a film provided therethrough.
    Type: Grant
    Filed: August 26, 2002
    Date of Patent: September 5, 2006
    Assignee: Japan Absorbent Technology Institute
    Inventors: Migaku Suzuki, Shingo Mori
  • Patent number: 7022380
    Abstract: Method and apparatus for coating a traveling paper web includes a coater head. The coater head includes an inlet for receiving fresh coating material which is introduced into a mixing chamber. A looped flow path is established within the coater head which includes a feed channel extending from the mixing chamber and leading into a coating chamber where one portion of the coating material proceeds in the direction of the rotating backing roll. The aqueous slurry of coating material near the downstream end of the coating chamber enters a recirculation channel from which it is directed through a plurality of flow metering orifices back into the mixing chamber.
    Type: Grant
    Filed: February 2, 2001
    Date of Patent: April 4, 2006
    Assignees: Metso Paper, Inc., Mitsubishi Heavy Industries
    Inventors: Xuekui Lan, Brian J. George
  • Patent number: 6946031
    Abstract: A rod for a coating device, used when a continuously-running body is coated with a coating solution, includes: a columnar base material; and an abrasion-resistant coating formed on a circumferential surface of the base material. When a friction coefficient between the coating and the body is represented by ?, a Vickers hardness of the coating is represented by Hv, a thermal expansion coefficient of the base material is represented by ?1×10?6/° C., a thermal expansion coefficient of the coating is represented by ?2×10?6/° C., and a film thickness of the coating is represented by t ?m, ? and Hv satisfy a predetermined relational expression, and/or ?1, ?2 and t satisfy another predetermined relational expression. Specifically, Hv>1500×?2+1200 and/or |?1??2|<3/(t?4)+7. The invention provides a process for producing a rod, for a coating device, on which an abrasion-resistant coating is formed on a base material to have a uniform thickness.
    Type: Grant
    Filed: February 4, 2003
    Date of Patent: September 20, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Atsushi Oshima
  • Patent number: 6942734
    Abstract: A treatment equipment, which is intended to be installed in connection with a moving surface. The treatment equipment includes a frame and a blade holder formed from composite material as a single piece and connected to the frame. In addition, a blade is fitted to the blade holder, the bevelled edge belonging to which is arranged to be brought into contact with the moving surface by moving the blade holder. In the blade holder, there is also a separate backing blade, which is fitted at one edge into the blade holder, the other edge extending closer than the blade holder to the said bevelled edge.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: September 13, 2005
    Assignee: Metso Paper, Inc.
    Inventors: Iikka Rata, Reijo Hassinen
  • Patent number: 6942904
    Abstract: The method is for applying a coating on a paper substance. A paper moves over a set of rollers. A coating is applied with a coating applicator that has ultrasonic transducers to vibrate the coating to reduce the viscosity of the coating. A downstream blade has an ultrasonic transducer in operative engagement with the blade. The vibrating blade is applied to the paper for scraping off excessive coating from the paper.
    Type: Grant
    Filed: September 11, 2003
    Date of Patent: September 13, 2005
    Assignee: Ultra Technology Europe AB
    Inventor: Hakan Dahlberg
  • Patent number: 6911085
    Abstract: Doctor blade dosing systems for devices used for coating material webs, particularly paper or paperboard webs, exist that have a doctor blade rod, which serves as a dosing element while being held inside a slot of a doctor blade bed that, in turn, is mounted in a support that can be fastened inside the frame of the system. According to the disclosure, the doctor blade rod has a diameter of less than 25 mm. The doctor blade bed is inserted in removable manner into a slot of the support situated on the face thereof. The ratio of the cross-sectional area (measured in mm2) of the doctor blade to the diameter (measured in mm) of the doctor blade rod is less than 60 mm, preferably less than 30 mm. The support is made of a plastic material and is shaped like a clamp having at least one rearward extending clamp limb and one joint location, whereby the holding slot that accommodates the doctor blade bed forms the clamp mouth.
    Type: Grant
    Filed: March 7, 2003
    Date of Patent: June 28, 2005
    Assignee: Horst Sprenger GmbH
    Inventor: Reinhard Knop
  • Patent number: 6869639
    Abstract: An improved film coater which utilizes one or more coater or applicators to transfer coating to the outer surfaces of at least one more rolls, which in turn transfers the coating from the roll surface to one or more sides of the web for coating paper is disclosed. The coater or applicator includes a smoothing doctor on the web and downstream of the one or more rolls, and may also utilize humidity from one of steam showers or a humidity enclosure to assist smoothing. The web may run in any direction, but preferably runs upwardly from the roll toward the doctor to reduce “film split” droplets effect. The present invention also reduces the fiber rise and arrange peel pattern on the coated web, resulting in a smooth uniform coated paper.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: March 22, 2005
    Assignee: Stora Enso North America Corp.
    Inventors: Wayne A. Damrau, John F. Bergin
  • Patent number: 6833157
    Abstract: The coating apparatus and method enable the coating liquid having been scraped-off to be reused without doing any one of the fluid adjusting treatment and the filtering treatment, while maintaining the features of the scraping-off type of extrusion coater, which is suitable for obtaining a uniform and extremely thin coating film. The coating head is provided with two slits: a coating slit and a recovering slit, and the excessive coating liquid having been discharged through the coating slit and applied to the web is scraped-off and recovered through the recovering slit.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: December 21, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toshihiro Mandai, Mikio Tomaru, Norio Shibata
  • Patent number: 6818062
    Abstract: It is possible to give ultrathin and uniform coating on a flexible web in scraping-off type coating. The distribution of pressure in a web width direction is adjusted by a pressure distribution adjusting device when an excess of coating liquid excessively applied is scraped off by a doctor blade by giving relative pressure to a coating surface of a web and the doctor blade after applying the coating liquid that is more excessive than the desired quantity of the coating liquid on the web by a precoating apparatus while making the web continuously travel.
    Type: Grant
    Filed: October 29, 2002
    Date of Patent: November 16, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Mikio Tomaru, Toshihiro Mandai, Norio Shibata
  • Patent number: 6790280
    Abstract: A cradle for a spreading device, such as a rotatable rod, to which a spreading organ to be pressed against a movable surface has been attached. The cradle is fastened to a holder, and a gasket is provided between the cradle and the holder (9).
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: September 14, 2004
    Assignee: Metso Paper Inc.
    Inventor: Markku Lummila
  • Patent number: 6786972
    Abstract: A method and arrangement using the drive device of a rod coating station to carry axial forces, in which the drive device includes at least a telescopic articulated shaft, at the first end of which is a changeable grooved rod and at the opposite end of which is the shaft of the drive motor. The rotation of the rod creates an axial force, which is cancelled by a counterforce from the articulated shaft side, which is brought to the end of the rod. The counterforce is brought to the rod through the articulated shaft from the drive motor side.
    Type: Grant
    Filed: November 15, 2002
    Date of Patent: September 7, 2004
    Assignee: Metso Paper, Inc.
    Inventors: Pekka Koskela, Olli Koivisto, Ari Rantanen
  • Patent number: 6758904
    Abstract: A backing lath (6, 14) used for coating a web of paper or paperboard in doctor blade and rod coaters and film-transfer coaters, the backing lath featuring a fiber-reinforced composite material body. When necessary, the backing lath can be surfaced with a wear-resistant coating. The invention also concerns a doctor element assembly, wherein the backing lath has a fiber-reinforced composite material body.
    Type: Grant
    Filed: March 28, 2003
    Date of Patent: July 6, 2004
    Assignee: Metso Paper, Inc.
    Inventors: Petri Parni, Rami Vanninen
  • Patent number: 6726810
    Abstract: A paper web is smoothened by passing the web through a pre-calender device on a paper machine before the application of a coating. The pre-calender device comprises at least one pair of steel rolls, one of which is heated, and a liquid application device which applies a thin film of water to the surface of the web which contacts the heated roll before the web enters the nip between the rolls. The web is then dried after exiting the nip either by wrapping the heated roll and/or by applying heat externally to the web.
    Type: Grant
    Filed: September 13, 2002
    Date of Patent: April 27, 2004
    Assignee: MeadWestvaco Corporation
    Inventor: Donald G. Bauer
  • Patent number: 6719845
    Abstract: The present invention relates to an improved doctor blade and bedplate apparatus wherein there is a recess in the bedplate from some position upstream of the doctor blade to some position downstream of the doctor blade. This recess or gap in the area of the bedplate under the doctor blade allows one to form an even or uniform coating on the back of a web of material. This is particularly helpful in forming uniform coatings on the back of a greige good which has face fibers of varying lengths. The present invention also relates to an improved process for preparing a relatively uniform coating on the back of a web of material.
    Type: Grant
    Filed: January 21, 2003
    Date of Patent: April 13, 2004
    Assignee: Bayer Polymers LLC
    Inventor: Jeffrey L. Robbins
  • Patent number: 6712905
    Abstract: A doctor blade device for machines for the coating of fibrous webs, in particular of paper or cardboard, and for keeping rotating rollers clean has a leaf-shaped doctor blade element (1) which is held by a holding means (2) and which, for a change, can be drawn out laterally on the holding means (2). The doctor blade element (1) is provided at least on one side with a grip part (8).
    Type: Grant
    Filed: May 14, 2002
    Date of Patent: March 30, 2004
    Inventors: Janne Nurmi, Timo Sironen
  • Patent number: 6630229
    Abstract: A recording medium particularly suitable for electrophotographic copying is characterized by coated paper that for a given basis weight has proportionally less coating and proportionally more fiber than conventional coated paper made for electrophotographic processes. The base sheet of the coated paper is preferably formed square on a paper machine wet end and has on the order of 40-50% less filler than conventional sheet paper made for electrophotographic processes. After being formed and dried, the base sheet is provided with a top coat weight that is approximately 60% less than the typical coat weight used for conventional paper. The coating is formulated to have sufficient viscosity to stay more on the surface of the base sheet. The coated sheet is calendered to a medium gloss on the order of a 75° TAPPI gloss of about 45, both to preserve a degree of surface roughness to enhance runnability of the paper through an electrophotographic copier and to provide a pleasant and easily readable surface.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: October 7, 2003
    Assignee: Stora Enso North America Corp.
    Inventors: Charles A. Normington, Gregory E. Pulchinski, Gary G. Schiller, Brian L. Scheller
  • Patent number: 6582769
    Abstract: A method for conditioning a metering blade of a paper coating machine. The method includes the steps of providing a paper coating machine having at least one metering blade and passing a movable substrate through the paper coating machine such that the metering blade contacts the substrate to distribute any coatings applied to the substrate. The method further includes the step of applying a solution of abrasive material to the substrate at a location upstream of the metering blade such that the abrasive material engages and conditions the blade.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: June 24, 2003
    Assignee: MeadWestvaco Corporation
    Inventor: Richard S. Crabtree
  • Patent number: 6533863
    Abstract: The present invention relates to an improved doctor blade and bedplate apparatus wherein there is a recess in the bedplate from some position upstream of the doctor blade to some position downstream of the doctor blade. This recess or gap in the area of the bedplate under the doctor blade allows one to form an even or uniform coating on the back of a web of material. This is particularly helpful in forming uniform coatings on the back of a greige good which has face fibers of varying lengths. The present invention also relates to an improved process for preparing a relatively uniform coating on the back of a web of material.
    Type: Grant
    Filed: May 17, 2001
    Date of Patent: March 18, 2003
    Assignee: Bayer Corporation
    Inventor: Jeffrey L. Robbins
  • Patent number: 6524444
    Abstract: In a paper machine having a roll rotating about an axis extending in a cross machine direction, and having a doctor blade applied to the roll surface by a blade holder parallel to the axis and carried on a doctor back, an apparatus is provided for accommodating relative movement between the blade holder and the doctor back in the cross machine direction during mounting and removal of the blade holder. The apparatus comprises a rail fixed to the doctor back and extending longitudinally in the cross machine direction. A groove extends along the length of the guide rail. The groove has a bottom, a width measured between confronting sides, and a top defined by ledges projecting inwardly from the sides, with inner edges spaced one from the other to define a slot that underlies the blade holder and has a width narrower than the width of the groove. A plurality of shafts are spaced along the length of the blade holder and project downwardly through the slot and into the groove.
    Type: Grant
    Filed: April 24, 2001
    Date of Patent: February 25, 2003
    Assignee: Kadant Web Systems Inc.
    Inventors: Allen J. Brauns, Robert A. Reid, Ronald F. Goodnow
  • Patent number: 6495196
    Abstract: A process and apparatus, including a separate coating head, for coating a strip article with a coating material. The process involves coating a strip article with a film of coating material by passing the strip article through a coating apparatus having at least one floating coating head provided with a coating face facing and extending laterally across a surface of the strip article to be coated. The coating head exudes a coating material and floats on the coating material as it meters the coating to a film of the desired thickness. The coating face of the coating head has a preferred coating profile between its opposite ends, and wherein distortions of the preferred coating profile during coating of said strip article are substantially prevented by modifying heat flux to or from selected parts of the coating head to compensate for distortions caused by differences of temperature within the coating head. The apparatus provides means of modifying heat flux to prevent such distortions of the coating profile.
    Type: Grant
    Filed: February 8, 2000
    Date of Patent: December 17, 2002
    Assignee: Alcan International Limited
    Inventors: Robert Arthur Innes, Melville Douglas Ball
  • Patent number: 6491754
    Abstract: An apparatus for one of direct and indirect application of a coating medium onto a traveling fiber material web includes at least one doctor element for application and/or metering of the coating medium. At least one doctor element is formed of a carbon fiber material.
    Type: Grant
    Filed: June 13, 2000
    Date of Patent: December 10, 2002
    Assignee: Voith Sulzer Paper Technology North America, Inc.
    Inventors: Edwin X. Graf, James A. Eng
  • Publication number: 20020164428
    Abstract: A method for the application of liquid through viscid medium onto the surface of a pre-dried material web including the steps of applying a viscid medium to at least one side of the material web, routing the material web through a press nip and supporting the material web substantially without free draw.
    Type: Application
    Filed: May 3, 2002
    Publication date: November 7, 2002
    Inventors: Gunter Halmschlager, Herbert Haunlieb, Wilhelm Gansberger, Erich Brunnauer, Stefan Lehner-Dittenberger, Martin Vogt
  • Patent number: 6471773
    Abstract: “Ghosting” and leakage problems in a doctor blade assembly are minimized or eliminated in a construction that includes a reservoir (10) partially surrounding a transfer roller (12) wherein a surface of the roller (12) is within the reservoir (10) for at least 180° of its rotation. The reservoir (10) is desirably split into two segments (50), (52) which are mounted for relative movement so as to allow access to the interior of the reservoir (10) as well as to the roll (12). Chambered end plates (82), (84) house seals (10) and receive parts (144) of the ends of doctor blades (40), (42) which extend past the end (142) of the roll (112) to promote good sealing at the ends of the assembly.
    Type: Grant
    Filed: June 15, 2000
    Date of Patent: October 29, 2002
    Inventor: Mark R. Atkins
  • Patent number: 6471776
    Abstract: An apparatus applies a coating composition consisting of a resin and fine abrasive particles like corundum particles, to a paper web by feeding the composition to the paper web as it loops around a guide roller to a metering roller juxtaposed with the guide roller. The coating composition, which may develop stripes, is then equalized with a structured roller engaging the paper-web pass leaving the guide roller and formed with at least one thread-like structuring element which may be followed by or preceded by a doctor blade arrangement or a smooth-surfaced roller.
    Type: Grant
    Filed: September 27, 2000
    Date of Patent: October 29, 2002
    Assignee: Vits Maschinenbau GmbH
    Inventors: Gisbert Krossa, Walter Müller, Ernst Klas
  • Patent number: 6464783
    Abstract: A method for manufacturing a prepreg in which a reinforcing substrate is impregnated with a thermosetting matrix resin. In the method, the reinforcing substrate is moved in a traveling direction. The thermosetting matrix resin is supplied to an outer circumferential surface of a transferring roller. The thermosetting matrix resin which substantially contains no solvent and which is in. a molten state is transferred from the outer circumferential surface of the transferring roller to a first surface of a reinforcing substrate while the reinforcing substrate moves. The thermosetting matrix resin which is transferred to the first surface is forced to permeate through the reinforcing substrate by pressing at least one pressing roller on the thermosetting matrix resin transferred to the first surface while the reinforcing substrate moves. The reinforcing substrate impregnated with the thermosetting matrix resin is heated to semi-cure the thermosetting matrix resin.
    Type: Grant
    Filed: October 18, 2000
    Date of Patent: October 15, 2002
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Ryuichi Hamabe, Hiroshi Harada, Noriaki Sugimoto, Hiroyuki Mori, Toshihiro Yaji, Yoshinori Matsuzaki
  • Patent number: 6444269
    Abstract: A coating head, and coating apparatus and methods using the coating head, for applying a solvent free coating material to a strip article advancing longitudinally in a coating line. The head includes a die having a transverse slit through which the coating material is deposited on the strip surface and having a land portion with an extended land surface on the exit side of the slit, the die being supported for movement normal to the strip surface, and one or more air or hydraulic cylinders exerting a load on at least the land portion of the die to urge the land surface toward the strip, wherein the die is constituted of a main body and the land portion, and the land portion is so connected to the main die body as to be capable of flexing relative to the main die body in a direction normal to the strip surface but to resist flexing in the direction of strip advance in the coating line.
    Type: Grant
    Filed: May 8, 2000
    Date of Patent: September 3, 2002
    Assignee: Alcan International Limited
    Inventors: Robert A. Innes, David G. Hallam
  • Patent number: 6432201
    Abstract: The invention relates to a device for applying a coating substance to a continuous paper web in a process for producing abrasion-resistant laminates for manufacturing decorative paper. The coating substance consists of a viscous mixture of melamine resin and alphacellulose to which particles of corundum are added, and is applied to the visible surface of the paper. The inventive device includes a deflector roll (2) on which the paper web (1) lies in an area in which it loops around; a metering roll (6) which is arranged parallel to the deflector roll (2) and forms the boundary of a gap with the same, and which is driven synchronously or almost synchronously with the deflector roll; a slit nozzle (7) for applying the coating substance either directly to the paper web (1) on the deflector roll (2) or to the metering roll (6); and a doctor blade of a rectangular piece (9) of flexible rubber type material.
    Type: Grant
    Filed: September 21, 2000
    Date of Patent: August 13, 2002
    Assignee: Vits Maschinenbau GmbH
    Inventors: Ernst Klas, Gisbert Krossa, Willi Erkelenz, Heinz Mörtl, Udo Unger
  • Patent number: 6413314
    Abstract: Known doctor rods (1) used as dosing elements in coating devices have a cylindrical steel base body on whose cover surface a chromium or ceramic layer of hard material is applied. According to the invention, the cracks and craters in the layer of hard material are closed by a joint which is produced by means of an ion implantation process, by the hard material reacting with the ions applied in a plasma. The improved doctor rods have a longer service life than known doctor rods.
    Type: Grant
    Filed: March 7, 2001
    Date of Patent: July 2, 2002
    Assignee: Jagenberg Papiertechnik GmbH
    Inventors: Hans Rückert, Ulrich Schoof
  • Patent number: 6406751
    Abstract: In the paper coating operation a wet or dry edge from coating composition is formed on the, seen in the direction of movement of the paper web, downstream side of the doctor, the so-called stalagmite formation. This stalagmite formation leads to various problems in the papermaking process and especially occurs at high speeds of the paper web and/or a high solids content of the coating composition, which two operating conditions are exactly required to obtain a maximum paper yield and a high paper quality. According to the invention the stalagmite formation is effectively prevented by supplying a fluid inhibiting the stalagmite formation to an area bounded, on the one hand, by the paper web and, on the other hand, by the above side of the doctor blade.
    Type: Grant
    Filed: March 19, 1993
    Date of Patent: June 18, 2002
    Assignee: KNP Papier B.V.
    Inventor: Jos Valentin Florent Daniels
  • Patent number: 6374768
    Abstract: An extrusion apparatus is described comprising an underside extrusion nozzle for extruding a substance onto an object from underneath the object, the nozzle comprising: a body and a manifold therein; a plurality of extrusion passages in the body extending between the body exterior surface and the manifold; and a scraper blade attached to the body adjacent to the passages and defining a reservoir between the exterior surface and the scraper blade. The extrusion apparatus may further comprise a stand for holding and biasing the nozzle in contact with an object conveyed above it.
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: April 23, 2002
    Assignee: Huntsman International LLC
    Inventor: Walter J. McGuire