Roll-type Press Patents (Class 100/327)
  • Patent number: 9857738
    Abstract: In a fixing device for fixing a toner image to a recording medium by heating and pressing the recording medium with transferred toner image between a heat fixing member and a pressure member, a fixing-member housing is disposed on an outer peripheral side of the heat fixing member, while a reflection member is attached to an inner side of the fixing-member housing opposed to the heat fixing member. Air blown by an air blower is circulated through space between the fixing-member housing and the heat fixing member.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: January 2, 2018
    Assignee: KONICA MINOLTA, INC.
    Inventors: Keita Saito, Noboru Oomoto, Shinichi Yabuki, Tadayasu Sekioka
  • Patent number: 8940216
    Abstract: A device and method of producing a building panel with a compressed and curved edge including a press tool, a heat device and a lubricating device and a building panel with a curved edge produced by the device and method.
    Type: Grant
    Filed: July 9, 2007
    Date of Patent: January 27, 2015
    Assignee: Valinge Innovation AB
    Inventors: Jan Jacobsson, Peter Wingardh
  • Patent number: 7900678
    Abstract: The invention concerns an apparatus for applying at least one surface portion of a transfer layer of a transfer film to a web of material, wherein the apparatus has at least one support roller and at least one pressure roller for pressing the web of material and the transfer firm against the at least one support roller, wherein the at least one pressure roller is pneumatically or hydraulically resiliently supported by means of at least one resilient arrangement in the form of a diaphragm spring and wherein the apparatus has at least one adjusting device for varying a spring rate of the at least one resilient arrangement and thus for varying a pressure contact force of the at least one pressure roller against the at least one support roller, and the use of such an apparatus.
    Type: Grant
    Filed: June 10, 2005
    Date of Patent: March 8, 2011
    Assignee: Leonhard Kurz Stiftung & Co. KG
    Inventors: Reinwald Mitsam, Michael Gwosdz-Kaupmann
  • Patent number: 7767050
    Abstract: A laminating roller assembly comprises a frame, a movable support supported by the frame, a laminating roller and a lift mechanism. The laminating roller is attached to the movable support. The lift mechanism is attached to the frame and is configured to move the movable support and the attached laminating roller relative to the frame. Additional embodiments of the invention are directed to a credential substrate laminator and a method of laminating a credential substrate using a credential substrate laminator.
    Type: Grant
    Filed: March 26, 2007
    Date of Patent: August 3, 2010
    Assignee: HID Global Corporation
    Inventors: James R. Meier, Greg E. Gindele, Gan Zhao, Anthony L. Lokken, Chadwick M. Johnson, Matthew K. Dunham
  • Publication number: 20100048371
    Abstract: Press rolls for washing or dewatering pulp are disclosed including a core, a mantle section attached around the core, at least one perforated roll plate extending around the circumference of the press roll, and including a plurality of mounting openings disposed between the end edges of the perforated roll plate and distributed around the entire circumference of the press roll, and a plurality of fixing pins corresponding to the mounting openings, each being anchored to the mantle section and surrounded by the corresponding plurality of mounting openings whereby movement of the perforated roll plate relative to the mantle section in a circumferential direction of the press roll is prevented.
    Type: Application
    Filed: November 13, 2007
    Publication date: February 25, 2010
    Applicant: METSO PAPER, INC.
    Inventor: Jan Mossberg
  • Publication number: 20090217828
    Abstract: In order to simplify the assembly and to achieve an improved compaction, the unit for compacting hollow bodies, for instance for non-returnable bottles, comprises a roller which can be driven, (1) featuring a plurality of protruding elements and a non-driven counter bearing (9?, 9?, 9?) with at least one recess, and is constructed in such a manner that the protruding elements, upon rotation of the roller, temporarily and at least partly engage with the recess and a deflector (6) which is downstream from the counter bearing in a rotational direction of the operated roller. Said deflector features at least one recess in which the protruding elements of the roller (1) temporarily engage during operation, at least partially.
    Type: Application
    Filed: April 16, 2007
    Publication date: September 3, 2009
    Inventor: Hermann Scharfen
  • Patent number: 6926805
    Abstract: The press device for a paper web, such as a calendar, contains a flexible moving element (1a) forming an endless structure, said element forming the shell (1) of a roll, the press device including further a counter roll. Inside the moving element (1a) there is a shoe element (3) that is arranged to support the shell (1a) against the counter roll to form a nip (N). The width and/or the surface contour of the supporting surface of the shoe element (3) guiding the shell of the roll in the nip contact varies in the machine direction and the shoe element is positionable in the machine direction to adjust the nip width and/or length.
    Type: Grant
    Filed: January 4, 2001
    Date of Patent: August 9, 2005
    Assignee: Metso Paper, Inc.
    Inventor: Mika Viljanmaa
  • Patent number: 6899023
    Abstract: The invention relates to an extended-nip roll press for dewatering a fibrous web in a press nip which, on one side, is formed by a rotating mating roll and, on the other side, is formed by an extended-nip press roll, whose roll centers lie in a stack plane, and the extended-nip press roll has a stationary support and a flexible roll cover that can rotate about the support, the cover in the region of the press nip being supported on the support on a sliding surface which is formed on an upper part, defining an entry and exit, of a press shoe that can be displaced with respect to the support in a loading direction, it being possible for the press shoe to be displaced radially along a loading plane which intersects the stack plane at the center of the mating roll and at an acute angle to the exit direction.
    Type: Grant
    Filed: July 10, 2002
    Date of Patent: May 31, 2005
    Assignee: Eduard Küsters Maschinenfabrik GmbH & Co. KG
    Inventors: Bernhard Brendel, Peter Hader
  • Patent number: 6846385
    Abstract: A vibration-minimizing suspension mechanism for a press roll is provided. The press roll and an opposing roll each having a rotational axis and cooperate to form a press nip for imparting a linear load on a web passing therethrough. The linear load is oriented through the rotational axes of the press and opposing rolls. The suspension mechanism comprises a suspension arm having opposed ends and a medially-disposed pivot, wherein the rotational axis of the press roll is rotatably engaged with one of the opposed ends. The suspension arm is pivotably and adjustably mounted at the pivot to allow the pivot to be adjusted in substantially parallel relation to the linear load. The adjustable pivot thereby allowing a mounting line, defined by the pivot and the rotational axis of the press roll, to be maintained in substantially perpendicular orientation to the linear load to thereby minimize vibration in the press roll.
    Type: Grant
    Filed: February 20, 2004
    Date of Patent: January 25, 2005
    Assignee: Metso Paper Karlstad AB
    Inventor: Tord Gustavsson
  • Publication number: 20040221749
    Abstract: A folding apparatus of a rotary press which can select collect run or straight run comprises: a fixed pin cam 2 which performs operations of straight run and collect run; a correction pin cam 3 which stops in case of straight run, and protrudes/retracts a pin end portion with respect to an outer periphery of a folding cylinder once per two rotations of a folding cylinder 12 in case of collect run; a blade cam 4 which thrusts a blade of each blade device 16 into a jaw device 17 once per rotation of the folding cylinder in case of straight run, and thrusts the same into the jaw device 17 once per two rotations of the folding cylinder in case of collect run; switching means 62 for switching between a drive side connection and a stop side connection of the correction pin cam and the blade cam; and detecting means 61 for detecting a start-up timing of the switching means.
    Type: Application
    Filed: December 22, 2003
    Publication date: November 11, 2004
    Applicant: Kabushikikaisha Tokyo Kikai Seisakusho
    Inventors: Hiroyuki Fujinuma, Toshio Hasegawa, Yukitoshi Takahashi
  • Publication number: 20040173106
    Abstract: The rag wringer is for use on an open barrel. It comprises a frame including to spaced-apart rails configured and disposed to engage the upper rim of the barrel. It further comprises a roller assembly having two parallel and horizontally-disposed rolls operatively connected to the frame. A pneumatic drive unit, including a pneumatic motor, is mechanically connected to at least one of the rolls. Damped rags enter the wringer through a rag funnel having an upper entry and a bottom exit, the bottom exit being juxtaposed to the entry of the roller assembly. Liquids removed from the rags are falling into a collecting pan located underneath the roller assembly. A guide plate connected to the frame below the rag exit of the roller assembly allows to direct processed rags into the barrel.
    Type: Application
    Filed: March 3, 2003
    Publication date: September 9, 2004
    Inventor: Jean Rouleau
  • Publication number: 20040173107
    Abstract: Apparatus for forming an extended nip between a mating roll and a shoe roll for treating a product web, the shoe roll having a stationary carrier and a flexible roll shell which can rotate around the carrier and which, in the region of the extended nip, is supported on a hydrodynamically lubricated running surface of a press shoe guided on the carrier, for which purpose a device for applying lubricant to the inner side of the roll shell is provided, where, in an inlet region, the press shoe has a plurality of holes which are arranged transversely with respect to the machine running direction, are connected to a lubricant supply in order to be fed with lubricant and, for this purpose, end at the running surface, and the holes comprise restrictors whose resistance is designed for a pressure drop of 5 to 15 bar.
    Type: Application
    Filed: December 16, 2003
    Publication date: September 9, 2004
    Applicant: Eduard Kusters Maschinenfabrik GmbH & Co.
    Inventors: Bernhard Brendel, Peter Hader
  • Publication number: 20040168585
    Abstract: A yoke assembly is disclosed for connecting and securing to each other rolls (1, 2) forming a nip in an extended nip press, whereby at least one of the rolls (1) of the extended-nip press includes loading means (3), advantageously at least one loading shoe for loading the endless-loop blanket (4) of one roll (1) against the other one (2) of the extended-nip press rolls so as to establish a nip (N), wherein the lower roll (1) and the upper roll (2) are dismountably connected to each other and the yoke assembly connecting the rolls (1, 2) of the extended-nip press to each other includes rotatable connecting members (7, 8) by means of which the extended-nip press rolls (1, 2) are detachably connected to each other by their bearing blocks (5, 6).
    Type: Application
    Filed: December 11, 2003
    Publication date: September 2, 2004
    Inventor: Erkki Aho
  • Publication number: 20040154479
    Abstract: Roll and calender including the roll that includes a roll jacket structured and arranged to surround an interior space. Roll also includes an absorber arrangement having at least one passive vibration absorber located within the interior space. 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: Application
    Filed: October 16, 2003
    Publication date: August 12, 2004
    Applicant: Voith Paper Patent GmbH
    Inventor: Rolf van Haag
  • Patent number: 6758136
    Abstract: The invention relates to a method for operating a calender, comprising a cylindrical heated roll and a flexible belt surrounding a stationary support beam which supports at least one actuator which may urge a concave load shoe against the heated roll by the flexible belt to form an extended and heated nip through which a fiber web passes to be calendered and a separating mechanism for having at least one of the rolls movable into and away from the nip characterized in that the flexible belt is a flexible tubular jacket which forms a part of an enclosed shoe roll such that the ends of the jacket have end walls mounted thereto, which end walls are rotatably mounted in relation to the support beam, and in that at least one of the end walls is driven by a drive arrangement which drive arrangement may be activated to drive the end walls and thereby also the jacket independently of its position in relation to the fiber web or the heated roll.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: July 6, 2004
    Assignee: Metso Paper, Inc.
    Inventors: Petter Honkalampi, Nils-Erik Säfman, Timo Torvi, Thomas Berglind
  • Patent number: 6742428
    Abstract: A master processing apparatus for use with a pair of removable feed rolls includes a frame, a master processing assembly, and a cutter assembly. The processing assembly performs a master processing operation wherein adhesive bonding is caused between a master and stock materials of the feed rolls. The cutter assembly is removably mounted to the frame on the discharge side of processing assembly. The cutter assembly has a blade movable to perform a severing operation wherein the blade cuts through the stock materials discharged from the processing assembly in a direction generally transverse to the feeding direction to sever a final product including the processed master and stock materials from a remainder of the supply of stock materials. The cutter assembly is removable from the frame for placement on a support surface to perform other cutting operations including a trimming operation wherein the blade is moved in the feeding direction.
    Type: Grant
    Filed: July 12, 2002
    Date of Patent: June 1, 2004
    Assignee: Xyron, Inc.
    Inventors: Paul J. Lemens, Joseph E. Velasquez, Daniel G. Reed
  • Publication number: 20040083910
    Abstract: A multi-roll calender for controlling the moisture gradient of a fibrous web and for enabling the manufacture of high quality paper grades, such as WFC, LWC-roto and SC-A by on- and off-line calendering. An on-or off-line multi-roll calender formed of separate sets of rolls is used for calendering, and the fibrous web (W) is subjected to intermediate moistening between the sets of rolls (A, B).
    Type: Application
    Filed: October 27, 2003
    Publication date: May 6, 2004
    Inventors: Antti Heikkinen, Pekka Linnonmaa
  • Publication number: 20040025720
    Abstract: A method and an arrangement for controlling evaporation and moisture in a multinip calender (10) when a continuous fibrous web (W) is calendered in calendering nips (1, 2, 3, 4, 5) placed one after the other before the fibrous web is wound on a reel-up/winder (9). It is characteristic of the invention that. with a view to making the net evaporation from and the final moisture content of the web (W) constant when the running situations in the calender (10) change, the web is passed in the calender from the outlet of at least one nip into an air-float chamber (20) of the turning airborne type.
    Type: Application
    Filed: January 29, 2003
    Publication date: February 12, 2004
    Inventors: Antti Heikkinen, Pekka Linnonmaa, Reijo Pietikainen
  • Publication number: 20030209156
    Abstract: A method for controlling the temperature of a heated roll in a calender is provided. The calender comprises at least one heated roll or thermoroll and at least one backing roll, between which is formed a nip through which the material web is conveyed. To the heated roll is supplied internal thermal power by internal heating means of the roll, and external thermal power by external heating means of the roll. Before changing the heated roll, internal thermal power is minimized within a specific period by control means provided in conjunction with the internal heating means; external thermal power is maximized within a specific period by control means provided in conjunction with the external heating means; and the surface temperature of and/or the thermal power released by the heated roll, which corresponds to the surface temperature and/or thermal power desired for the grade of the material web, is maintained within a specific period.
    Type: Application
    Filed: February 13, 2003
    Publication date: November 13, 2003
    Applicant: Metso Paper, Inc.
    Inventors: Pekka Linnonmaa, Juhani Partanen
  • Publication number: 20030150339
    Abstract: Wide nip calender arrangement and process for glazing a paper or cardboard web that includes a back pressure surface, a support shoe arrangement, and a circulating jacket loaded by the support shoe arrangement in a direction of the back pressure surface to form a wide nip. A moistening device is arranged before, relative to a web travel direction, an intake to the wide nip, and a calibration nip is arranged behind, relative to a web travel direction, a discharge from the wide nip. 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: Application
    Filed: January 28, 2003
    Publication date: August 14, 2003
    Applicant: Voith Paper Patent GmbH
    Inventor: Rudiger Kurtz
  • Patent number: 6598521
    Abstract: A calender having a heated first roll which is opposed to and forms a nip with a soft surface counter roll system comprised of a second roll which has an outer shell. An endless polyurethane belt or blanket having an inside diameter 5 to 50 mm larger than the outside diameter of the second roll shell, is mounted about the second roll. The outer circumferential edges of the polyurethane belt are held by clamping rings to bearings which are circumferentially mounted about the second roll on the roller gables. A small quantity of oil may be placed between the surface of the second roll shell and the polyurethane belt.
    Type: Grant
    Filed: May 10, 2001
    Date of Patent: July 29, 2003
    Assignee: Metso Paper, Inc.
    Inventor: Magnus Wikstöm
  • Patent number: 6582561
    Abstract: Apparatus for forming an extended nip between a heated mating roll and a shoe roll for treating a product web, especially a paper web, the shoe roll having a stationary support and a flexible belt which can rotate about the support and, in the area of the extended nip, is supported on a shoe which is guided on the support, forms a press section and has an effective shoe width, and the belt having end sections which are fixed to end walls that are rotatably mounted on the support, in each case at the ends and axially adjacent to but at a distance from a mating face located opposite the effective shoe width of the shoe, the mating roll having a radially protruding support ring, which forms an opposing bearing for the direct support of an outer belt section on the mating roll and consists of a thermally insulating material.
    Type: Grant
    Filed: August 13, 2002
    Date of Patent: June 24, 2003
    Assignee: Eduard Kusters Maschinenfabrik GmbH & Co. KG
    Inventor: Brendel Bernhard
  • Patent number: 6578473
    Abstract: A supercalender has a top roll, a bottom roll, and a plurality of intermediate rolls. The intermediate rolls are mounted to support frames by pivot arms. The pivot radius defined by the arms is at least about 2½ times the diameter of the largest intermediate roll. Hydraulic load support cylinders are arranged between the intermediate roll bearings and anchor points which are spaced away from the intermediate rolls, to allow greater movement without mechanical interference between hydraulic load support cylinders. The greater length of the pivot arms combined with a greater stroke of the load support cylinders allows the supercalender to accommodate filled rolls which change diameter substantially over their life, as the surface of the rolls is repeatedly turned down to refurbish the roll surface. The calender may be based on an existing calender of the closed A-frame type.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: June 17, 2003
    Assignee: Metso Paper, Inc.
    Inventor: Richard M. Strebel
  • Patent number: 6463850
    Abstract: Method and device for forming local compressions (7) in a material (31) wherein moisture (17) is applied locally to the areas being compressed during the compression operation.
    Type: Grant
    Filed: March 13, 2000
    Date of Patent: October 15, 2002
    Assignee: SCA Hygiene Products AB
    Inventor: Ulrika Hagrud
  • Patent number: 6418996
    Abstract: Laminator including: a pair of fixing seats fixedly mounted in a housing opposite to each other; a pair of pressing rollers parallelly pivotally installed between the pair of fixing seats, the rotary shafts at one end of the pressing rollers being respectively fitted in two gears which are drivingly engaged with each other, one of the gears being engaged with and driven by a driving gear of a driving motor; a thermally conductive casing assembly fixedly mounted between the fixing seats for rotatably containing therein the pair of pressing rollers, a rear end of the thermally conductive casing assembly being formed with an enlarged exit, a front end of the thermally conductive casing assembly being formed with a longitudinal entrance; and at least one heating member 4 fixed on the thermally conductive casing assembly for heating the same. Prior to passing through the pressing rollers, an article to be laminated is first heated by the thermally conductive casing assembly to a certain temperature.
    Type: Grant
    Filed: August 2, 2000
    Date of Patent: July 16, 2002
    Assignee: Tex Year Industries Incorporation
    Inventor: Chin-Tsung Hsiao
  • Patent number: 6395136
    Abstract: A press for imprinting and drying a fibrous web includes a press device and a roll body, and a heat transferring device that heats the web in the press nip in the form of a sleeve that encircles the roll body and is heated by at least one heating apparatus. The external mantle surface of the sleeve that presses against the web has imprinting elements for imparting a desired imprinted pattern in the web. The sleeve can be substantially rigid such that it is stable in form and does not substantially deform under the loads imposed on it by the press device and roll body. Alternatively, the sleeve can be a flexible and deformable sleeve. The connection between the roll body and the sleeve is such that the sleeve can freely expand and contract axially and radially relative to the roll body as the sleeve is heated by the heating apparatus. The sleeve can be either permeable or impermeable.
    Type: Grant
    Filed: June 16, 2000
    Date of Patent: May 28, 2002
    Assignee: Valmet-Karlstad Aktiebolag
    Inventors: A. Ingmar Andersson, A. Malin K. Kilian, Bertil Andrén
  • Patent number: 6395211
    Abstract: A calender for treatment of a web of a nonwoven textile V made of thermoplastic fibers. The calendar includes a heated embossing roller made of steel and a counter-roller that runs at the same circumference velocity. The local plastification in the nonwoven textile V that is produced at the locations of the raised embossing areas results in a board-like feel of the nonwoven textile V. To reduce this hardness, the web of the nonwoven textile V is broken, after having cooled at least partially.
    Type: Grant
    Filed: June 21, 2000
    Date of Patent: May 28, 2002
    Assignee: Eduard Kusters Maschinenfabrik GmbH & Co. KG
    Inventors: Klaus Dettmer, Achim Wandke, Vladimir Tocaj
  • Publication number: 20020059872
    Abstract: In a roll nip (5) formed between a shoe press roll (1) having a concave, plane or slightly convex press shoe (11), a flexible jacket (15) and a hot counter roll (3), the jacket (15) may be damaged by the heat from the counter roll (3) upon a web break. To avoid this, the roll nip (5) is opened by removing one of the press shoe (11) and the hot counter roll (3) from the other, so that the jacket (15) resumes a generally cylindrical shape having an arched portion located across the shoe (11). Then, a force is applied inside the roll jacket (15), directed away from the roll nip (5), to tension the roll jacket (15) over the leading edge and the trailing edge of the press shoe (11), so as to reduce the height of arch of the arched portion over the shoe (11) sufficiently to ensure removal of the jacket (15) from contact with the hot counter roll (3). Preferably, the force against the inside of the jacket is applied by means of a tensioning shoe (61).
    Type: Application
    Filed: February 28, 2001
    Publication date: May 23, 2002
    Applicant: Valmet-Karlstad AB
    Inventor: Erik Brox
  • Patent number: 6264792
    Abstract: A method and apparatus for producing calendered paper by an on-line manufacturing system comprising at least a paper machine and a multi-nip calender. The method comprises following steps: removing water from a formed paper web by pressing, drying the pressed paper web by at least one dryer, calendering the dried web by the multi-nip calender, measuring a cross-machine moisture profile or a variable relative thereto, and altering the moisture of the web so that the moisture profile of the web in the cross-direction is even when the web enters the first nip of the calender.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: July 24, 2001
    Assignee: Valmet Corporation
    Inventors: Harri Kuosa, Markku Kyytsönen, Juhani Partanen, Kari Sipi, Eero Suomi, Antti Heikkinen, Mikko Tani, Juha Lipponen, Mika Tammenoja, Kari Juppi
  • Patent number: 6213009
    Abstract: The invention relates to a method for operating a calender, comprising a cylindrical heated roll and a flexible belt surrounding a stationary support beam which supports at least one actuator which may urge a concave load shoe against the heated roll by means of said flexible belt to form an extended and heated nip through which a fiber web passes to be calendered and a separating mechanism for having at least one of the rolls movable into and away from the nip characterized in that said flexible belt is a flexible tubular jacket which forms a part of an enclosed shoe roll such that the ends of said jacket have end walls mounted thereto, which end walls are rotatably mounted in relation to said support beam, and in that at least one of said end walls is driven by means of a drive arrangement which drive arrangement may be activated to drive the end walls and thereby also the jacket independently of its position in relation to the fiber web or the heated roll.
    Type: Grant
    Filed: September 3, 1999
    Date of Patent: April 10, 2001
    Assignee: Valmet Corporation
    Inventors: Nils-Erik Sätman, Thomas Berglind
  • Patent number: 6209451
    Abstract: Roll for a paper calender. The roll includes a core having opposed end faces and a barrel intermediate the opposed end faces, the barrel having a barrel region. Also included is an elastic cover extending over a working width of the core and a plurality of roller pins, each roller pin engaging a respective end face and having a pin region. Also provided is a temperature control device adapted to supply heat to and/or dissipate heat from the pin regions to a first temperature, and further adapted supply heat to and/or dissipate heat from the barrel region to a second temperature, wherein the first and the second temperatures are different. The present invention also provides a calender that employs such a roll having an elastic cover. Additionally provided is a process for operating such a roll having an elastic cover.
    Type: Grant
    Filed: May 26, 1999
    Date of Patent: April 3, 2001
    Assignee: Voith Sulzer Papiertechnik Patent GmbH
    Inventors: Rolf Van Haag, Franz Kayser
  • Patent number: 6189442
    Abstract: The invention relates to an apparatus for calendering a fiber web, wherein the fiber web passes through an extended and heated nip, said nip being formed on one side by a cylindrical heated roll and on the other side by a flexible tubular jacket which is pressed against the heated roll by means of a concave load shoe, said tubular jacket surrounding a stationary support beam which supports at least one actuator which may urge said load shoe and said flexible tubular jacket against said heated roll, and wherein the extension of the load shoe in the axial extension is less than the axial extension of the jacket and the heated roll such that when the load shoe is urged against the heated roll there will be formed tapered sections at each side end of the jacket within the nip wherein said tapered section are substantially covered by said fiber web such that a small strips of the fiber web at each edge is not calendered in said extended nip.
    Type: Grant
    Filed: September 2, 1999
    Date of Patent: February 20, 2001
    Assignee: Valmet Corporation
    Inventors: Petter Honkalampi, Nils-Erik Säfman, Timo Torvi, Thomas Berglind
  • Patent number: 6164198
    Abstract: The invention relates to a method for operating a calender, comprising a cylindrical heated roll and a flexible belt surrounding a stationary support beam which supports at least one actuator which may urge a concave load shoe against the heated roll by means of said flexible belt to form an extended and heated nip through which a fiber web passes to be calendered and a separating mechanism for having at least one of the rolls movable into and away from the nip characterized in that said flexible belt is a flexible tubular jacket which forms a part of an enclosed shoe roll such that the ends of said jacket have end walls mounted thereto, which end walls are rotatably mounted in relation to said support beam, and in that at least one of said end walls is driven by means of a drive arrangement which drive arrangement may be activated to drive the end walls and thereby also the jacket independently of its position in relation to the fiber web or the heated roll.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: December 26, 2000
    Assignee: Valmet Corporation
    Inventors: Petter Honkalampi, Nils-Erik Safman, Timo Torvi, Thomas Berglind
  • Patent number: 6158335
    Abstract: The invention relates to a method for operating a calender, comprising a cylindrical heated roll and a flexible belt surrounding a stationary support beam which supports at least one actuator which may urge a concave load shoe against the heated roll by means of said flexible belt to form an extended and heated nip through which a fiber web passes to be calendered and a separating mechanism for having at least one of the rolls movable into and away from the nip characterized in that said flexible belt is a flexible tubular jacket which forms a part of an enclosed shoe roll such that the ends of said jacket have end walls mounted thereto, which end walls are rotatably mounted in relation to said support beam, and in that at least one of said end walls is driven by means of a drive arrangement which drive arrangement may be activated to drive the end walls in and thereby also the jacket independently of its position in relation to the fiber web or the heated roll.
    Type: Grant
    Filed: September 3, 1999
    Date of Patent: December 12, 2000
    Assignee: Valmet Corporation
    Inventors: Nils-Erik Safman, Thomas Berglind
  • Patent number: 5914008
    Abstract: A process and device for increasing the gloss and/or smoothness of a web of material are described, whereby a web of material (5) is passed through a roller gap where it is exposed to pressure. A steam dispensing device (7) is provided upstream of the roller gap relative to the direction of travel (9) of the web of material (5). The increase in gloss and/or smoothness is to be accomplished without consuming much energy. To do so, the steam is condensed on the web of material and the web of material (5) is guided through the roller gap before the increase in moisture content of the surface due to the steam treatment has dropped below a predetermined value. The predetermined moisture content is in the range of 12% to 25%.
    Type: Grant
    Filed: October 21, 1996
    Date of Patent: June 22, 1999
    Assignee: V.I.B. Apparatebau GmbH
    Inventor: Stefan H. Winheim
  • Patent number: 5887517
    Abstract: A soft nip calender employing a compliant roll constructed of circumferentially superpositioned layers of compliant material which are progressively less compliant as the layers approach an underlying steel roll.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: March 30, 1999
    Assignee: Beloit Technologies, Inc.
    Inventors: Shihua Liang, Rex A. Becker
  • Patent number: 5836242
    Abstract: A calendering system in a papermaking or board manufacturing process, the system comprising at least one press nip, an endless calender belt (30) having a core (32) and a compressible, elastic material bonded to the core (32), as well as a paper or paperboard web (16) which passes together with the belt (30) through the press nip and the dewatering of which is completely or at least substantially completely terminated earlier in the manufacturing process. The calender belt (30) has in its thickness direction a first hardness on the side (34) of the core (32) closest to the web (16) and a hardness on the opposite side (36) of the core (32) that is higher than the first hardness. The first hardness is so selected in relation to the web (16) that the surface (38) of the calender belt (30) engaging the web (16) can adapt its shape in the press nip (14) to unevennesses in the surface (20) of the web (16).
    Type: Grant
    Filed: December 9, 1996
    Date of Patent: November 17, 1998
    Assignee: Albany Nordiskafilt AB
    Inventor: Bo-Christer Aberg
  • Patent number: 5816146
    Abstract: A calender for satining paper through roll gap formed between a heated hard roll and a soft roller having an elastic covering. Overheating of an edge region of the covering, i.e., the portion not covered by the paper to be satined, may be prevented by utilizing continuous insulation belts. The insulation belt may reduce the transmission of heat from the surface of the hard roll to the elastic covering, at least in the roller gap.
    Type: Grant
    Filed: February 25, 1997
    Date of Patent: October 6, 1998
    Assignee: Voith Sulzer Finishing GmbH
    Inventors: Ulrich Wagner, Dirk Cramer
  • Patent number: 5816143
    Abstract: A process and device for satining paper may include guiding a sheet through a roll gap defined by a heated hard roll and a soft roll having with a covering. A paper sheet width of the paper may be less than a width of a cylindrical part of each of the covering and the hard roll. The two rolls may be axially adjusted in relation to each other and in accordance with the paper sheet width. Further, the two rolls are positioned such that a first sheet edge is located adjacent a first end of the cylindrical part of the covering and a second sheet edge is located adjacent a second end of the cylindrical part of the hard roll. That is, the cylindrical parts of the covering and hard roll are positioned to be directly over each other, i.e., beyond the sheet edge, at most by a predetermined permissible edge width.
    Type: Grant
    Filed: February 25, 1997
    Date of Patent: October 6, 1998
    Assignee: Voith Sulzer Finishing GmbH
    Inventors: Ulrich Wagner, Dirk Cramer
  • Patent number: 5792306
    Abstract: In an apparatus useful for sealing layers of a web comprised of plastic film layers to one another in a bag-making machine, a sealing drum having a cylindrical surface is employed. A sealing blanket is deployed about plural blanket rolls and about the sealing drum so that a substantial portion of the cylindrical surface of the sealing drum is wrapped by the sealing blanket with the wrapping surface facing the cylindrical surface while the remaining portion of the cylindrical surface is not wrapped thereby at any given time. A nip roll acts together with one of the blanket rolls so as to define a nip. An idle roll is located near the nip.
    Type: Grant
    Filed: October 18, 1996
    Date of Patent: August 11, 1998
    Assignee: FMC Corporation
    Inventor: Wim Verbeiren
  • Patent number: 5792311
    Abstract: A disposable panty shield comprising a thin, highly absorbent pad having a body-contacting surface, an absorbent layer, a liquid barrier, an adhesive layer, and a release layer to protect the positioning adhesive prior to use wherein the panty shield has been densified by fusing all pad layers together in a manner such that the interstitial space between the individual fibers in the densified areas is not sufficient to readily allow fluid to flow through, and the liquid barrier has a contoured surface. The adhesive layer is attached to the liquid barrier such that the adhesive follows the contour of the liquid barrier.
    Type: Grant
    Filed: May 4, 1995
    Date of Patent: August 11, 1998
    Assignee: McNeil-PPC, Inc.
    Inventor: Anthony C. Ng
  • Patent number: 5738007
    Abstract: A calender employs an open-stack like arrangement with a single vertical beam or support column on each end of the calender. In combination with the support beam, a special swing link is used to support tension loads on the open side of the calender. The nip is thus straddled by structural members between the support column and the link. This combination has the ability to support high linear nip loads, as high as 3,000 PLI or higher. The link has pin connections at both ends so that when one pin is removed, the link can be swung open for roll removal or accessibility. Thus, the strength of the closed-stack calender is combined with the visibility and ease of access of the open-stack calender by the employment of tension links which replace one of the support columns utilized in a closed-stack calender.
    Type: Grant
    Filed: March 12, 1996
    Date of Patent: April 14, 1998
    Assignee: Beloit Technologies, Inc.
    Inventors: Arnold J. Roerig, Dale A. Brown
  • Patent number: 5728257
    Abstract: A pouch laminator used for coating both sides of a small-sized sheet such as a photograph or identification card with a vinyl film is disclosed. Two folding guide plates are hinged to front and rear sides of the laminator body, respectively. A pair of bearing units are placed inside the laminator body for bearing the heating and molding rollers. A tension member detachably mounted to the top of each bearing unit for elastically holding the heating and molding rollers. A power supply unit having an elastic piece is placed aside each bearing unit. The elastic piece is brought into contact with a terminal provided on an associated end of each heating roller. A flat or embossing roller may be used as the molding roller. The embossing roller has a knurled rolling surface, thus embossing both sides of a coated sheet.
    Type: Grant
    Filed: May 8, 1996
    Date of Patent: March 17, 1998
    Inventor: Seung-Hun Lee
  • Patent number: 5694837
    Abstract: A hot soft nip calender apparatus is provided for a paper mill. The apparatus includes at least one heated calender roller and a finishing belt which is moved in proximity to the heated calender roller by a plurality of drive rollers and at least one pressure roller. Thus, a heated calender nip is defined between the heated calender roller and the finishing belt. A web of paper is passed through the nip, such that one surface of the web of paper is contacted by the heated calender roller, while the opposed surface of the web is contacted by the finishing belt. The finishing belt has an extremely smooth surface for contacting the web of paper so as to impart appropriate smoothness and gloss characteristics to that surface. The finishing belt can readily be changed when worn or damaged or to alter the characteristics being imparted to a web of paper.
    Type: Grant
    Filed: February 26, 1996
    Date of Patent: December 9, 1997
    Assignee: Champion International Corporation
    Inventors: Thomas M. Neider, Robert J. Rudt