Gas Or Vapor Circulation For Contact With Treated Material Patents (Class 34/122)
  • Patent number: 9783927
    Abstract: The air hood (3) for Yankee rolls (1) comprises at least one supply circuit (5, 6, 7) to supply dry hot air towards outlets (7A) to a working area, and at least one suction circuit (11) to suck wet air from the working area. The hood comprises a thermal insulation insulating at least partially the supply circuit from the suction circuit.
    Type: Grant
    Filed: October 13, 2014
    Date of Patent: October 10, 2017
    Assignee: A. CELLI PAPER S.P.A.
    Inventors: Salvatore Sorrentino, Mauro Celli, Giuseppe Antonini
  • Patent number: 9731515
    Abstract: In one example, a multi-stage hot air dryer in which each successive stage is configured to take in air discharged from a prior stage and discharge it on to an article moving through the dryer from the last stage to the first stage such that the article is exposed to higher humidity air first in the dryer and to lower humidity air last in the dryer.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: August 15, 2017
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Ronald R. Anderson
  • Patent number: 8580083
    Abstract: A method to dewater a fibrous web includes directing the fibrous web through a first press zone defined between a revolving permeable belt and a revolving permeable support belt and having a first press zone length. The fibrous web is arranged lying between the revolving permeable belt and the revolving permeable support belt. A fluid is caused to flow through the permeable belt, the fibrous web and the support belt at least over a section of the first press zone length. The fibrous web is dewatered in a second press zone following the first press zone and defined between the revolving permeable belt and the revolving permeable support belt, the second press zone having a second press zone length. The fibrous web is led through the second press zone between the permeable belt and the support belt, the permeable belt and the support belt each having a different compressibility.
    Type: Grant
    Filed: January 24, 2013
    Date of Patent: November 12, 2013
    Assignee: Voith Patent GmbH
    Inventors: Joao V. Boechat, Thomas Scherb, Luiz C. Silva, Rogerio Berardi, Daniela Reis
  • Patent number: 8468712
    Abstract: A “dam and fill” method for bonding a transparent substrate to a liquid crystal display is disclosed which method provides means for effectively containing uncured/partially cured adhesive prior to bonding using the method. Also described is an associated device, made using the “dam and fill” method, which has precise targeted spacing between the transparent substrate and the liquid crystal display.
    Type: Grant
    Filed: November 11, 2008
    Date of Patent: June 25, 2013
    Assignee: E.I. du Pont de Nemours and Company
    Inventor: Thuan V. Nguyen
  • Patent number: 8382956
    Abstract: A device for drainage of a pulp web, particularly a tissue web, having a first pressing zone having a first pressing zone length through which the pulp web is fed horizontally between a circulating, permeable band and a circulating, permeable support band. The first pressing zone is designed such that a fluid can flow through the band, the pulp web and the support band at least on one part of the first pressing zone length. In addition, the device has a subsequent second pressing zone having a second pressing zone length. The pulp web is guided through the second pressing zone between two bands having differing compressibility.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: February 26, 2013
    Assignee: Voith Patent GmbH
    Inventors: Joao V. Boechat, Thomas Scherb, Luiz C. Silva, Rogerio Berardi, Daniela Reis
  • Patent number: 8261465
    Abstract: Device and process for producing and treating a fibrous web. The device includes a moistening unit structured and arranged to simultaneously influence a cross machine moisture profile of the web and the curl of the web independently of each other. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.
    Type: Grant
    Filed: March 9, 2005
    Date of Patent: September 11, 2012
    Assignee: Voith Paper Patent GmbH
    Inventors: Roland Mayer, Antje Stein, Markus Oechsle, Frank Wegehaupt
  • Publication number: 20110154685
    Abstract: The object of the invention is an apparatus and a method for improving the detachment of paper (1) from the cylinder of a paper machine in a drying section implemented with a single wire transfer, which drying section comprises means for heating the paper on the drying cylinder (3) and for transporting it onwards on the wire (2) via a hitch roll (8) to the next drying cylinder such that the paper together with the wire in the section between the cylinders is sucked against the wire by means of low pressure. What is essential to the invention is that in order to improve the detachment of the paper (1) an apparatus is installed on the opposite side of the drying wire (2) at the detachment point (7), which apparatus comprises a nozzle (14), with which an air jet (11) is blown against the direction of travel (15) of the drying wire, and a carrying surface (9) such that the air jet (11) ejects secondary air (17) along with it causing an air flow (18) between the planar carrying surface (9) and the drying wire (2).
    Type: Application
    Filed: August 25, 2009
    Publication date: June 30, 2011
    Applicant: EV GROUP OY
    Inventors: Ilpo Pitkäniemi, Timo Haverinen
  • Patent number: 7951269
    Abstract: System for drying a tissue or hygiene web. The system includes a permeable structured fabric carrying the web over a drying apparatus. A permeable dewatering fabric contacts the web and is guided over the drying apparatus. A mechanism is used to apply pressure to the permeable structured fabric, the web, and the permeable dewatering fabric at the drying apparatus. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: May 31, 2011
    Assignee: Voith Patent GmbH
    Inventors: Jeffrey Herman, Thomas Thoroee Scherb, Luiz Carlos Silva, Hubert Walkenhaus
  • Patent number: 7930838
    Abstract: The present invention relates to a laundry dryer that can prevent as well as remove wrinkles of laundry. A laundry dryer includes a drum in which laundry is held; a hot air heater that heats air to supply hot air to the drum; a steam generator that generates steam to supply the steam to the drum; and a water tank to hold water to supply to the steam generator, the water tank in flow communication with a water supply hole through which water is supplied into the water tank with the water tank kept in flow communication with the steam generator.
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: April 26, 2011
    Assignee: LG Electronics Inc.
    Inventors: Sang Hun Bae, Chul Jin Choi, Dong Hyun Kim, Young Bok Son
  • Patent number: 7871495
    Abstract: A device for removing a liquid, dusty or solid substance from a moving fabric or web. A roll is placed transversely in relation to the moving fabric or web and arranged to rotate around a rotation axis. The roll includes an outer mantle through which a liquid or air flow can enter the inside of the roll. The rotating roll is placed inside a chamber. The chamber includes an opening in a direction of the rotating axis. The opening is arranged to expose at least a part of the outer mantle such that the moving fabric or web tangential to the chamber can be supported against the outer mantle. At least a spiral, screw or threaded structure is arranged inside the rotating roll at a distance from the outer mantle, and is arranged to rotate around a rotating axis and to transfer liquid or air that has entered the roll in the direction of the rotation axis.
    Type: Grant
    Filed: February 21, 2006
    Date of Patent: January 18, 2011
    Assignee: Effcom Oy
    Inventor: Olavi Savolainen
  • Patent number: 7841103
    Abstract: A through-air dryer is disclosed. The through-air dryer includes a cylindrical deck made from a plurality of deck plates that support a throughdrying fabric. The deck plates are supported by opposing hubs. Each of the hubs is in communication with a bearing that is mounted to a stationary shaft for allowing the cylindrical deck and the hubs to rotate. The bearings are positioned so as to create a through-air dryer structure that remains stable during operation and allows for easy calculation of loads on the dryer.
    Type: Grant
    Filed: November 3, 2006
    Date of Patent: November 30, 2010
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Frank S. Hada, Michael A. Hermans, Ronald F. Gropp, Peter K. Costello
  • Patent number: 7802377
    Abstract: The invention relates to a drying cylinder which is used to dry a paper, cardboard, tissue or other web of fibrous material in a machine for the production and/or for the transformation thereof. The drying cylinder includes a support body and an external cover layer which is heated by a hot fluid. The thermal flow passing through the external cover layer is increased such that at least one cavity is provided between the support body and the external cover layer through which the fluid flows. The external cover layer is predominately so thin that the ratio formed by the thermal conductivity of the material and the thickness of the external cover layer is greater than a threshold value of 3.2 kW/m2K for steel, 30 kW/m2K for aluminum, 18 kW/m2K for bronze alloys, 3.4 kW/m2K for copper and 6.1 kW/m2K for magnesium.
    Type: Grant
    Filed: June 28, 2007
    Date of Patent: September 28, 2010
    Assignee: Voith Patent GmbH
    Inventors: Rainer Kloibhofer, Christoph Haase, Thomas Gruber-Nadlinger, Herbert Boden, Erich Rollenitz, Manfred Gloser
  • Patent number: 7758727
    Abstract: A process for producing tissue webs is disclosed. The process includes the step of partially dewatering a tissue web and then subjecting the web to multiple deflections against fabrics prior to drying the tissue web. For instance, in one embodiment, the tissue web is deflected multiple times in between two opposing fabrics. The tissue web can be deflected against the fabrics under sufficient pressure to cause the tissue web to mold against the fabrics. By deflecting the tissue web multiple times, rearrangement of the papermaking fibers contained in the tissue web occurs increasing the bulk of the web.
    Type: Grant
    Filed: March 5, 2007
    Date of Patent: July 20, 2010
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Paul Beuther, Frank Druecke, Jeffrey Holz
  • Publication number: 20100126033
    Abstract: A dryer uses conduits to carry a heating medium, such as steam, to heat the outer surface of the dryer. The volume of steam is successfully reduced to non-explosive levels and the shell need not be designed to prevent an explosion. Conduits may be formed through the shell itself or grooves may be formed on the inner surface of the shell, with the conduits retained within the grooves. Also, the conduits can be placed against the inside surface of the dryer and a material, such as zinc, can be filled in about the conduits. The material serves to both retain the conduits in place and thermally couple the conduits to the dryer to assure efficient heat transfer between the conduits and dryer. These modifications relieve the dryer from the Unfired Pressure Vessel classification to the classification of a piping assembly under ASA code regulations. This results in savings in operation safety, installation cost and operating costs due to the absence of costly inspections.
    Type: Application
    Filed: November 9, 2009
    Publication date: May 27, 2010
    Inventors: Osvaldo Ricardo Haurie, Richard Kenneth Haurie
  • Patent number: 7713385
    Abstract: Apparatus and method for treating a material web, which has at least one nip through which the material web is guided and which is formed between a first revolving, heated surface and a second revolving surface, it being possible for the first surface to be heated to at least 120° C. and both surfaces in the nip having the same direction of movement as the material web. Good surface quality of the material web is obtained by providing a box which bounds a space through which the material web is guided, the space being arranged after the first or after the last nip in the direction of movement of the web.
    Type: Grant
    Filed: December 16, 2005
    Date of Patent: May 11, 2010
    Assignee: Voith Paper Patent GmbH
    Inventors: Jörg Rheims, Günter Bonk, Jochen Autrata
  • Patent number: 7686923
    Abstract: A paper machine dewatering system includes a first fabric, a second fabric, and an airflow device. The first fabric carries a fibrous web on a side thereof. The second fabric is in at least partial contact with the fibrous web, the fibrous web being between the first fabric and the second fabric. The airflow device moves air successively through the first fabric, the fibrous web, and the second fabric.
    Type: Grant
    Filed: February 7, 2008
    Date of Patent: March 30, 2010
    Assignee: Voith Patent GmbH
    Inventors: Thomas Thoröe Scherb, Jeffrey Herman, Luiz Carlos Silva
  • Patent number: 7662446
    Abstract: A polarizing plate has a polarizer and a protective film formed on at least one surface of the polarizer. The protective film is formed by curing an energy ray-curable composition that contains at least one of a first energy ray-polymerizing compound having a bisphenol residue, a second energy ray-polymerizing compound having a neopentylglycol group, a third energy ray-polymerizing compound having a trimethylolpropane group, and a fourth energy ray-polymerizing compound having a pentaerythritol group. In the polarizing plate, though the protective film is thin, the polarizer is protected from the influence of external moisture, etc., and therefore its polarizability is kept good even in high-temperature high-humidity environments.
    Type: Grant
    Filed: December 24, 2002
    Date of Patent: February 16, 2010
    Assignees: Sony Corporation, Sony Chemical & Information Device Corporation
    Inventors: Kaori Seki, Tadashi Akamatsu, Zemin Shi, Hiroyuki Torisu
  • Publication number: 20090320323
    Abstract: This device comprises a drum having a lateral surface through which fluid can pass, and two flexible belts (2) which pass over the lateral surface of the drum (1) at a distance from one another, each of them on an idle guide roller (3) of its own. Each roller (3) is mounted so as to pivot about a vertical axis (7).
    Type: Application
    Filed: June 28, 2007
    Publication date: December 31, 2009
    Applicant: RIETER PERFOJET
    Inventor: Jean-Michel Dubus
  • Publication number: 20090172965
    Abstract: Household appliance comprising an outer casing (2) provided with a worktop (3), wherein said worktop (3) comprises a plurality of apertures (7), each one of which is fluidly connected with conveying means adapted to deliver a flow of air through said apertures (7) for drying garments laid upon the same worktop.
    Type: Application
    Filed: March 6, 2007
    Publication date: July 9, 2009
    Applicant: Electrolux Home Products Corporation N.V.
    Inventors: Flavio Campagnolo, Nicola Reid, Elisabetta Bari
  • Patent number: 7435315
    Abstract: The object of the invention is an arrangement for stabilizing a paper web (3) in a paper machine, which arrangement comprises at least three cylinders (4, 5, 6) which have been arranged so that a pocket space is formed between them, a blow box (7) arranged in the pocket space, which blow box has a blow nozzle (12), in which a nozzle slot (19) has been arranged, a separate wall (10), substantially in the direction of the blow box (7), which wall has a first edge and a second edge that are substantially parallel, which has been attached from its first edge to the blow box (7), whose height in the travelling direction of the paper web (3) is 25-300% of the height of the blow box (7) in the travelling direction of the paper web (3), in the second edge of which wall there has been arranged a boundary layer air doctor (15), which extends substantially unto the surface of the cylinder (4, 5, 6), and which wall (10) has been attached to the blow box (7) so that the blow box (7) and the wall (10) form a space in the a
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: October 14, 2008
    Assignee: Metso Paper, Inc.
    Inventor: Nenad Milosavljevic
  • Patent number: 7363725
    Abstract: The invention relates to a device for drying paper webs, especially tissue paper webs, with a dryer cylinder 1 and a dryer hood 2, 3 for blowing hot air onto the paper web. It is mainly characterised by the inlet air parts of the dryer hood 2, 3, such as the nozzle basket 9 or the inlet duct 4, being uncoupled from the frame or hood structure 10. This is especially advantageous at operating temperatures of up to 700° C.
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: April 29, 2008
    Assignee: Andritz AG
    Inventors: Wolfgang Promitzer, Johann Hiebaum
  • Patent number: 7291249
    Abstract: An apparatus for the manufacture of a structured fiber web including an imprinting fabric, a first pressure field device, a second pressure field device and a drying cylinder. The fiber web is formed and carried on the imprinting fabric with an initial dry content of less than 35%. The first pressure field device applies a first pressure field to the imprinting fabric and the fiber web, thereby pressing the fiber web onto the imprinting fabric, thereby pre-imprinting the fiber web. The second pressure field device applies a second pressure field to the imprinting fabric in the fiber web, thereby again pressing the fiber web onto the imprinting fabric, drying the fiber web and fixing a three-dimensional surface structure in the fiber web. The drying cylinder has the fiber web delivered thereto by the imprinting fabric.
    Type: Grant
    Filed: December 18, 2003
    Date of Patent: November 6, 2007
    Assignee: Voith Paper Patent GmbH
    Inventors: Thomas Thoröe-Scherb, Harald Schmidt-Hebbel, Jeffrey Herman
  • Patent number: 7192507
    Abstract: Machine for producing a fibrous material web and process for guiding the web through the machine. The machine includes a wire section, a drying section, arranged downstream of the wire section with regard to a web travel direction, having at least one free web draw, a first and second shoe press separated in the web travel direction, and an upper felt and a lower transfer belt arranged to guide the fibrous material web through the second shoe press. The lower transfer belt is structured and arranged to transfer the fibrous material web to the drying section, and the material web is guided in a closed draw from the wire section to a first free web draw, with regard to the web travel direction, in the drying section. At least one high-performance drying device is positioned before the first free web draw.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: March 20, 2007
    Assignee: Voith Paper Patent GmbH
    Inventor: Ulrich Begemann
  • Patent number: 7114267
    Abstract: There are known drum jacket constructions that consist solely of perforated sheet metal. There are also known constructions, which, in order to increase the distance between the drum and the surrounding perforated sheet-metal wire gauze, consist of sheet metal with trusses configured e.g. as sheet-metal rings, or of honeycomb sheet-metal strips that are welded together, or of screwed constructions devoid of welding joints. The simplest solution for increasing said distance is a construction comprising a normal screen drum with struts bent into a U-shape that are screwed to the exterior, whereby the wire gauze lies on the external edges of said struts. Said drum however has a low buckling resistance, which is a required characteristic for the drying of tissue or paper. The novel drum jacket construction thus consists of an intersecting structure of sheet-metal strips, whose rings and strips are provided with corresponding insertion slots.
    Type: Grant
    Filed: November 7, 2003
    Date of Patent: October 3, 2006
    Assignee: Fleissner GmbH
    Inventor: Gerold Fleissner
  • Patent number: 7063772
    Abstract: Apparatus for treating a fibrous web that includes at least one supporting surface arranged to support a surface of the fibrous web, and at least one sealing device positionable adjacent a surface of the web opposite the surface of the web supported by the at least one supporting surface. The at least one sealing device includes a positionably adjustable sealing element. A distance between the positionably adjustable sealing element and the surface of the web opposite the surface supported by the at least one supporting surface is adjustable.
    Type: Grant
    Filed: July 26, 2002
    Date of Patent: June 20, 2006
    Assignee: Voith Paper Patent GmbH
    Inventors: Peter Kahl, Uwe Joos
  • Patent number: 7060163
    Abstract: The invention relates to a device for continuous drying of a pulp sheet 10, particularly a tissue web, with a drying drum 1 and an air circulating system. It is mainly characterised by the drying drum 1 having a shell 12 with a perforated cylinder 20 that is externally supported by radial bearing rings 21.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: June 13, 2006
    Assignee: Andritz AG
    Inventors: Franz Haider, Gerald Schadler, Wilhelm Mausser
  • Patent number: 6910283
    Abstract: A throughdrying process and system for the manufacture of a tissue web conveys a fibrous web of cellulose fibers through a throughair drying station that includes one or more throughair dryers. The throughair drying station is supplied with a heated drying medium from a source. After drying the web, the drying medium is conducted away from the throughair drying station as moisture laden exhaust air that is collected, dried, and at least partially recirculated back to the throughair drying station as a supplement to the source of heated drying medium, thereby reducing the load on the heated drying medium source.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: June 28, 2005
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventor: Kiran K. Reddy
  • Patent number: 6877246
    Abstract: A through-air dryer is disclosed. The through-air dryer includes a cylindrical deck made from a plurality of deck plates that support a throughdrying fabric. The deck plates are supported by opposing hubs. Each of the hubs is in communication with the bearing that is mounted to a stationary shaft for allowing the cylindrical deck and the hubs to rotate. The bearings are positioned so as to create a through-air dryer structure that remains stable during operation and allows for easy calculation of loads on the dryer.
    Type: Grant
    Filed: December 30, 2003
    Date of Patent: April 12, 2005
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Frank S. Hada, Michael A. Hermans, Ronald F. Gropp, Peter K. Costello
  • Patent number: 6869506
    Abstract: An apparatus for decreasing heat emission and enhancing a vacuum system in a papermaking machine is provided. Such an apparatus includes a drying device having an inlet for receiving heated air for removing moisture from a paper web and an outlet for exhausting the moisture-containing air from the drying device. A vacuum system is configured to produce a suction and receive the moisture-containing air. A web handling device is disposed upstream of the drying device and is configured to interact with the web before the web is directed to the drying device. The web handling device is further configured to receive a portion of the moisture-containing air from the drying device, wherein the portion of the moisture-containing air is directed through the web by the web handling device to facilitate dewatering of the web before the moisture-containing air is received by the vacuum system.
    Type: Grant
    Filed: November 22, 2002
    Date of Patent: March 22, 2005
    Assignee: Metso Paper Karlstad Aktiebolag (AB)
    Inventor: Dennis Edward Jewitt
  • Patent number: 6772533
    Abstract: A multi-cylinder dryer of a paper machine, has at least one drying cylinder (10) and at least one roll (11, 12) located at a different height to the cylinder and at a distance to it in the machine direction. A paper web (14) travels from the drying cylinder (10) to this roll (11, 12). Dry air is brought to the dryer through a beam (13) located in front of the web (14) in the machine direction, the air is directed by means of nozzles (33) in the beam into a throat (21) between the drying cylinder (10) and the web (14) mainly to intensify the drying effect. A doctor (27) keeps the surface of the drying cylinder clean. The beam (13) forms with the roll (12) a smooth, high channel (25), at least on the side of the roll (12), for the passage of the web during a disturbance.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: August 10, 2004
    Assignee: Metso Paper, Inc.
    Inventors: Reijo Hassinen, Jari Jonkka, Markku Lyytinen, Mika Saari
  • Patent number: 6740204
    Abstract: Apparatus for treating a fibrous web that includes at least one supporting surface arranged to support a surface of the fibrous web, and at least one sealing device positionable adjacent a surface of the web opposite the surface of the web supported by the at least one supporting surface. The at least one sealing device includes a sealing element and a holder structured and arranged to hold and to enable lateral sliding movement of the at least one sealing device cross-wise to a web travel direction.
    Type: Grant
    Filed: July 26, 2002
    Date of Patent: May 25, 2004
    Assignee: Voith Paper Patent GmbH
    Inventors: Peter Kahl, Uwe Joos
  • Patent number: 6694639
    Abstract: A sheet material, a production method therefor and a drying apparatus is provided wherein a heating gas comprising mainly superheated steam is blown directly to reach the sheet internal water content via a permeable belt for restricting free shrinkage of the sheet, to give instantaneous evaporation (pressure flow) and form a porous sheet. A wet sheet 35 is clamped between an externally heated rotor 1 having heated gas blowing ports 19 for blowing heated gas from an outer peripheral direction, and a permeable endless fabric belt 36 which moves in synchronous with the rotor under a tension capable of restraining dry shrinkage of the sheet material, to thereby give rapid direct moisture evaporation and form a porous sheet.
    Type: Grant
    Filed: June 6, 2002
    Date of Patent: February 24, 2004
    Assignee: Tokushu Paper Mfg. Co., Ltd.
    Inventor: Morimasa Hanaya
  • Patent number: 6694640
    Abstract: A calender, a system, and a method of regulating the humidity in a calender. The calender includes a housing having at least two side pieces and a roll stack located at least partially between the side pieces, wherein a space is formed by the roll stack and the web between the side pieces, and a fan positioned to blow dry air into the space. The system is for regulating the humidity in a calender, the calender being used to treat a moisture-containing material web and including a housing having at least two side walls and a roll stack, the calender defining a space bounded at least by the roll stack, the web, and the at least two side walls, and includes a device for reducing the humidity of the space, wherein the humidity level in the space is reduced to a level which is below a saturation point. The method includes reducing the humidity of the space, wherein the humidity level in the space is reduced to a level which is below a saturation point.
    Type: Grant
    Filed: February 4, 2000
    Date of Patent: February 24, 2004
    Assignee: Voith Sulzer Papiertechnik Patent GmbH
    Inventor: Franz Kayser
  • Patent number: 6637128
    Abstract: A transversely stretched nonwoven fabric is manufactured by transversely stretching a nonwoven fabric. First, an original web comprising a plurality of un-oriented filaments is heated to a temperature higher than its stretch suitable temperature by 5° C. or more. Next, the heated original web is stretched at a rate of 1.2 to 3 in its transverse direction to stretch the filaments of the original web with almost no molecular orientation involved. Then, the original web stretched transversely at a rate of 1.2 to 3 is heated to the stretch suitable temperature and the original web is further stretched transversely at the stretch suitable temperature. With these steps, a transversely stretched nonwoven fabric in which the original web is stretched transversely at a rate of 7 times or more in total as compared with the state of the stretch thereof is manufactured with a high tensile strength of 132.5 mN/tex (1.5 g/d) in the transverse direction.
    Type: Grant
    Filed: December 4, 2002
    Date of Patent: October 28, 2003
    Assignees: Nippon Petrochemicals Co., Ltd., Polymer Processing Research Institute Ltd.
    Inventors: Yuki Kuroiwa, Yoshiro Morino, Kazuhiko Kurihara, Shuichi Murakami
  • Patent number: 6601318
    Abstract: A drier unit (10) for drying printed products has a plurality of drier rails (12), which comprise in each case a supporting body (14) manufactured from a hollow section (16). The clear outer contour of the cross-sectional area of the supporting bodies (14) is a rectangle. The drier rails (12) have in each case two resistance heating units (60) and additionally carry an infrared radiator (164).
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: August 5, 2003
    Inventor: Hans G. Platsch
  • Patent number: 6551461
    Abstract: The energy efficiency of a throughdrying papermaking process is improved by recycling exhaust air from one or more throughdryers to further heat the web at various places in the process.
    Type: Grant
    Filed: July 30, 2001
    Date of Patent: April 22, 2003
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Michael Alan Hermans, Charlcie Christie Kay Leitner, Frank Stephen Hada, Ronald Frederick Gropp, Marek Parszewski
  • Patent number: 6523279
    Abstract: Roll and drying section of a machine for producing a material web and process for drying a material web. The roll includes a jacket having a plurality of throughput openings, a device for supplying gas through the jacket, and a second jacket located within the jacket being arranged to form a ring chamber with the jacket. The second jacket is gas tight to seal the ring chamber in a gas-tight manner from an interior of the second jacket.
    Type: Grant
    Filed: September 12, 2001
    Date of Patent: February 25, 2003
    Assignee: Voith Paper Patent GmbH
    Inventor: Georg Kugler
  • Publication number: 20030019601
    Abstract: The energy efficiency of a throughdrying papermaking process is improved by recycling exhaust air from one or more throughdryers to further heat the web at various places in the process.
    Type: Application
    Filed: July 30, 2001
    Publication date: January 30, 2003
    Inventors: Michael Alan Hermans, Charlcie Christie Kay Leitner, Frank Stephen Hada, Ronald Frederick Gropp, Marek Parszewski
  • Patent number: 6484418
    Abstract: A method, system and apparatus is disclosed for drying a wet web quickly and efficiently on the surface of a steam heated drying cylinder in a continuous papermaking process. A steam-heated drying cylinder having an exterior surface is rotated under a drying hood adjacent the exterior surface of the drying cylinder. The hood comprises a drying zone of heated air, with nozzles adapted to supply hot air streams into the drying zone. A wet web is adhered to the drying cylinder and rotated through the drying zone of the hood. Then, hot air streams are directed from the nozzles upon the wet web. A hot air stream is provided from a nozzle at a lead angle that deviates from perpendicular between about 3 and about 30 degrees, in a lead direction towards the downstream end of the web drying process.
    Type: Grant
    Filed: November 6, 2000
    Date of Patent: November 26, 2002
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Frank Hada, Ron Gropp
  • Patent number: 6485612
    Abstract: A press assembly for use in a paper-making machine includes a roll, a first air press backing assembly and a second air press backing assembly. The first air press backing assembly and the second air press backing assembly each include an inner wall, an outer support structure and a plurality of inflatable hoses interposed between the inner wall and the outer support structure. The inner wall is positioned adjacent to and defines an air chamber with the roll.
    Type: Grant
    Filed: May 18, 2001
    Date of Patent: November 26, 2002
    Assignee: Voith Paper, Inc.
    Inventor: Edwin X. Graf
  • Patent number: 6473997
    Abstract: The invention relates to a method and a drying section for dewatering a fibrous web (9), the drying section preferably being intended to dry fibrous webs in a paper machine, and the drying section comprising a number of drying cylinders (8), by which an inlet and outlet nip are formed when running the fibrous web, and the drying section comprising drying devices for decreasing the moisture content of the fibrous web, the drying devices comprising a blow device for blowing air in the proximity of the surface of the fibrous web.
    Type: Grant
    Filed: April 9, 2001
    Date of Patent: November 5, 2002
    Assignee: Equitor OY
    Inventor: Carl-Gustav Berg
  • Patent number: 6454903
    Abstract: An apparatus transfers a lead strip of a paper web, in particular the beginning of a still wet lead strip or tail, from a press roll of a paper-making machine to a following section of that machine. An air jet device peels off the beginning of the tail from the press roll and transfers it across a paper roll to an infeed area of a felt which guides the web into the following section. On an infeed area of the felt, an air cushion is created by an air table having a plurality of tiny holes delivering air from a low pressure plenum to the air cushion.
    Type: Grant
    Filed: February 1, 2001
    Date of Patent: September 24, 2002
    Assignee: Voith Paper Patent GmbH
    Inventors: Leif Mohrsen, Allan Broom
  • Patent number: 6449874
    Abstract: A method for blowing steam against a paper web, whereby the steam is blown by a steam box having several profiling chambers in the cross direction of a paper machine. The cross-profile of the paper web is controlled by the steam supplied by the profiling chambers. A gas flow is provided between the profiling chambers to prevent the steam blown by a profiling chamber from affecting the effective area of the steam blown by the adjacent profiling chamber. Further, a steam box for implementing the method is disclosed.
    Type: Grant
    Filed: March 14, 2001
    Date of Patent: September 17, 2002
    Assignee: Metso Paper Automation Oy
    Inventor: Kari Pellinen
  • Patent number: 6442865
    Abstract: Drying section of a machine for producing a material web. The drying section includes a support roll with an associated impingement dryer, and at least one straight or curved section forming at least a part of a closed path between a last nip of a press section adjacent the drying section and the support roll. The support roll and the impingement dryer are arranged to guide the material web over the support roll, and, thereby, to subject the material web to at least one of hot air and hot steam impingement. The at least one straight or slightly curved section is structured and arranged to form at least one of an impingement drying section and a transfer foil section.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: September 3, 2002
    Assignee: Voith Sulzer Papiertechnik Patent GmbH
    Inventors: Robert Wolf, Markus Oechsle, Wolfgang Mayer, Tri Chau-Huu, Thomas Mack, Roland Mayer
  • Patent number: 6412189
    Abstract: A steam box in a paper machine, the steam box including a main steam zone and at least one side steam zone through which steam is blown to a paper web. The side steam zone is placed in a side section of the steam box and arranged to form a curtain in order to prevent air from entering between the steam box and the paper web from outside the steam box and/or to prevent steam from exiting between the steam box and the paper web. Steam is supplied to the side steam zone from a steam chamber through a side steam zone valve arranged inside the steam box.
    Type: Grant
    Filed: October 18, 2000
    Date of Patent: July 2, 2002
    Assignee: Metso Paper Automation Oy
    Inventor: Kari Pellinen
  • Patent number: 6408534
    Abstract: A steam box includes a elongated steam-distribution chamber, regulator chambers set in a row next to the elongated steam-distribution chamber and covered on one side with a continuous perforated screen. Operating devices distribute the steam from the distribution chamber to each regulator chamber. The steam box is intended to feed steam through the perforated screen to the web, to heat it according to a desired profile. The perforated screen is secured along one long edge to hinge members and along the opposite edge to locking members and is arranged to be able to be opened, to permit access to the regulator chambers.
    Type: Grant
    Filed: August 23, 2000
    Date of Patent: June 25, 2002
    Assignee: Metso Paper Automation Oy
    Inventors: Jukka-Pekka Alen, Reijo Hassinen, Tapio Härkönen, Tommi Luosma, Tuomas N{umlaut over (aa)}tänen, Jukka Samppala
  • Patent number: 6393719
    Abstract: A process and an apparatus for removing water from a fibrous web are disclosed. The process comprises providing a fibrous web having a moisture content from about 1% to about 99%; providing an oscillatory flow-reversing impingement gas having a pre-determined frequency; providing a gas-distributing system comprising at least one discharge outlet designed to emit the oscillatory flow-reversing impingement gas onto the web; and impinging the oscillatory flow-reversing gas onto the web through the plurality of discharge outlets, thereby removing moisture from the web. The apparatus comprises a web support designed to receive a fibrous web thereon and to carry it in a machine direction; at least one rotary valve pulse generator designed to produce oscillatory flow-reversing air or gas; and at least one gas-distributing system in fluid communication with the pulse generator for delivering the oscillatory flow-reversing air or gas to the web.
    Type: Grant
    Filed: May 3, 2000
    Date of Patent: May 28, 2002
    Assignee: The Procter & Gamble Company
    Inventor: Gordon Keith Stipp
  • Patent number: 6378226
    Abstract: Each screen drum design has, in front of the rotating screen drum which transports the web, a stationary screen cover whose purpose is retention of the dry air coming from the fan, uniform throughput of the air through the screen cover, and a uniform drying process over the width of the web. The screen cover has a perforation whose permeability is adapted to the degree of drying. At the beginning of the drying process, when the web is not yet very permeably, the screen cover is to be perforated provided a smaller free air throughput surface and, as the degree of dryness increases, a larger free air throughput surface by making the holes larger in diameter or provided a larger number of holes per unit surface.
    Type: Grant
    Filed: May 1, 2000
    Date of Patent: April 30, 2002
    Inventor: Gerold Fleissner
  • Publication number: 20010029682
    Abstract: A method for blowing steam against a paper web, whereby the steam is blown by a steam box having several profiling chambers in the cross direction of a paper machine. The cross-profile of the paper web is controlled by means of the steam supplied by the profiling chambers. A gas flow is provided between the profiling chambers to prevent the steam blown by a profiling chamber from affecting the effective area of the steam blown by the adjacent profiling chamber. Further, a steam box for implementing the method is disclosed.
    Type: Application
    Filed: March 14, 2001
    Publication date: October 18, 2001
    Applicant: Metso Paper Automation Oy
    Inventor: Kari Pellinen
  • Patent number: 6247247
    Abstract: A blow box used in the drying section of a papermaking machine and a method for sealing a pocket provided with a blow box, and a blow nozzle. The blow box is arranged to eject air away from the space between a wire and the blow box and/or maintain an underpressure zone in this space. In the interface between the desired underpressure zone and an outside volume, the blow box is provided with a sealing element, such as a blow nozzle, protruding towards the wire to a certain distance “d” seen from the wire, for forming a seal between the underpressure zone and the area remaining outside the underpressure zone. The sealing element is connected to the blow box so that the element may be moved away from the wire to a distance “D” by a push and/or by an actuator, the distance “D” being greater than the distance “d”.
    Type: Grant
    Filed: October 20, 1999
    Date of Patent: June 19, 2001
    Assignee: Metso Paper, Inc.
    Inventors: Seppo Yömaa, Matti Kurki, Raimo Virta, Reijo Jokinen, Hannu Kokkala