Pressure Patents (Class 162/205)
  • Publication number: 20040099391
    Abstract: The present invention relates to a process of manufacturing a high bulk, low weight paper product produced by using a high level of groundwood containing sheet, blade coating with specifically formulated coatings then passing the paper web between two extended-nip calenders, one calender for each side of paper. As a result, densification of the resulting coated paper product is reduced, while maintaining stiffness and opacity comparable to heavier weight sheets.
    Type: Application
    Filed: July 10, 2003
    Publication date: May 27, 2004
    Inventors: Bob Ching, Xiao-Qin Wang, Peter Veverka
  • Publication number: 20040101704
    Abstract: Spirally wound paper products are disclosed having desirable roll firmness characteristics and softness properties. The rolled products can be made from a single ply tissue web formed according to various processes. Once formed, the tissue web is subjected to a shear-calendering device that increases the fuzz-on-edge properties of the web and preserves the bulk of the web when wound.
    Type: Application
    Filed: November 27, 2002
    Publication date: May 27, 2004
    Applicant: Kimberly-Clark Worldwide,Inc.
    Inventors: Michael Alan Hermans, Clayton C. Troxell, Tammy L. Baum, Sharon S. Chang, James Leo Baggot
  • Publication number: 20040089432
    Abstract: The present invention relates to a wet-laid non-woven sheet made from a essentially binder-free aramid floc, wherein the aramid floc includes at least 25 percent by weight of para-aramid floc based on the total weight of aramid floc only, and a process for making the sheet.
    Type: Application
    Filed: August 25, 2003
    Publication date: May 13, 2004
    Inventor: Mikhail R. Levit
  • Publication number: 20040089434
    Abstract: A method and an arrangement for manufacturing calendered paper or board particularly in the on-line manufacturing method. In the method, a base web is formed from a mixture of water and pulp supplied from the headbox and the web is dried by removing water over the press section and over the dryer section by heating. The formed web is calendered at least once to modify the surface on at least one of its sides. Before calendering the cross-direction thickness profile of the web is standardized and calendering is carried out by means of a long-nip calender, whereby good surface quality is obtained without losing the bulk or stiffness of the web.
    Type: Application
    Filed: October 10, 2003
    Publication date: May 13, 2004
    Applicant: Metso Paper, Inc.
    Inventors: Pekka Koivukunnas, Matti Lares, Mika Leino
  • Patent number: 6730192
    Abstract: Printing paper or paperboard of 30-200 g/m2 grammage is made in a machine with a wet section, press section and drying section. The web passes through a roll press with a double-felted roll-press nip, then in a shoe press with an extended single or double-felted shoe-press nip, and pressed in a deflection-compensating roll press, having a double-felted roll-press nip and open press rolls. The web travels at at least 1,200 m/min.; is subjected in the roll-press nip to a linear load from 100 to 300 kN-m and a specific pressure from 5 to 15 MPa; and is subjected in the shoe-press nip to a linear load from 500 to 1,500 kN/m and a specific high pressure from 4 to 13 MPa, to obtain a dewatered web with a dry-solids content of at least 38 percent after the roll-press nip and at least 45 percent after the shoe-press nip.
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: May 4, 2004
    Assignee: Metso Paper, Inc.
    Inventor: Jorma Laapotti
  • Publication number: 20040074619
    Abstract: A dry end of a tissue machine is made shorter by close-coupling a reel-up to the drying section and supporting the web from the drying section to the reel-up by a foil or a belt such that web stability is maintained, thus allowing high-speed operation. The foil's downstream edge can form a nip with the paper roll and nip load can be controlled by controlling pivotal movement of the foil. The reel-up can include a calendering belt for calendering the web as it passes through a nip between the belt and a reel drum supported on the belt, and a rotatable reel spool on which a paper roll is wound in nipping engagement with the reel drum. Alternatively, the reel drum can be eliminated and the paper roll can be supported on the belt. A composite shaftless core for winding is also disclosed.
    Type: Application
    Filed: October 10, 2003
    Publication date: April 22, 2004
    Applicant: Metso Paper Karstad AB
    Inventor: Anders Tommy Linden
  • Patent number: 6716308
    Abstract: A method of compressively modifying, such as by calendering, an uncreped throughdried tissue sheet is disclosed. The dried tissue sheet, initially supported by the throughdrying fabric, is removed from the throughdrying fabric and compressively modified. Thereafter, the compressively modified sheet is recombined with a papermaking fabric and carried to a reel section while supported by the fabric. The sheet is always, or substantially always, supported by a fabric or a roll surface to minimize opportunities for sheet breaks or otherwise adversely affecting sheet properties.
    Type: Grant
    Filed: December 14, 2000
    Date of Patent: April 6, 2004
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: James Leo Baggot, Tony Deadman, Ronald Frederick Gropp, Frank Stephen Hada, Robert James Seymour
  • Publication number: 20040060676
    Abstract: The present invention relates a method for the manufacture of paper, in particular of coated fine paper, in which method paper stock is fed from a headbox (100) to a wire section (200) in which water is drained from a paper web (W), in which method the paper web (W) is passed from the wire section (200) to a press section (300) to press water out of the paper web (W), and in which method, after the press section (300), the paper web (W) is dried in a dryer section (400), precalendered and coated in a coating station (600), after which the paper web (W) is dried in a drying section (650) and calendered in a final calender (900), and reeled in a reel-up (1000). In the method the stock is fed into the headbox (100) using multilayering technology, the paper web (W) is precalendered in a one or more reinforced-nip calender (500), the paper web (W) is coated in a film coating unit.
    Type: Application
    Filed: September 22, 2003
    Publication date: April 1, 2004
    Inventors: Johan Gron, Pentti Rautiainen
  • Patent number: 6712930
    Abstract: Tissue paper is calendered in at least one calendering nip. The tissue paper is calendered in at least one soft, long calendering nip. By belt calendering a high crêping effect is achieved when a so-called post-nip contact is used. With post-nip contact, the web and the belt are in contact with the thermo roll over a distance of 10-200 mm after the nip, whereby the belt tension presses the web against the surface of the thermo roll, and hereby the belt expands in the nip, and when it is then restored it will crêpe the paper. In this manner a soft tissue paper with maximum bulkiness is brought about. The belt tension used in the belt calender is 1-10 kN/m.
    Type: Grant
    Filed: May 6, 2003
    Date of Patent: March 30, 2004
    Assignee: Metso Paper, Inc.
    Inventor: Pekka Koivukunnas
  • Patent number: 6712931
    Abstract: A method for manufacturing a paper or board web in which stock is fed from a headbox (100) to a wire section (200), in which water is removed from the web (W) and from which the web (W) is passed to a press section (300), in which water is pressed out of the web (W) and after which the web (W) is dried in a dryer section (400) and reeled by means of a reel-up (800). According to the invention, additives, fillers and/or fines are fed into the stock of the surface layers of the web (W) in order to reduce the pore size distribution of the web in the surface layers so as to substantially correspond to a precoated web. The invention also relates to a paper or board machine which is characterized in that it is structured for enabling the feeding of additives, fillers and/or fines into a fiber stock such that an uncoated web substantially corresponds in its properties to a precoated web.
    Type: Grant
    Filed: May 12, 2000
    Date of Patent: March 30, 2004
    Assignee: Metso Paper, Inc.
    Inventors: Johan Grön, Pasi Ahonen, Juha Kinnunen, Pentti Rautiainen, Mari Taipale
  • Patent number: 6708608
    Abstract: The invention relates to a calender intended to calender a paper or board web (4), which calander comprising a calendering section, in which there are at least two members, such as rolls (1, 2, 3), in nip contact, between which the web (4) being calendered is arranged to run. For reducing the moisture and heat leaving the web (4) while it is being calendered a wall (16, 17), covering at least part of the calendering section, is formed from the web (4) being calendered by changing its direction of travel.
    Type: Grant
    Filed: July 23, 2002
    Date of Patent: March 23, 2004
    Assignee: Metso Paper, Inc.
    Inventor: Mika Viljanmaa
  • Publication number: 20040050516
    Abstract: The invention relates to a method for passing a web (W) in connection with a finishing device of a paper or board machine, in which method the web (W) is passed from a preceding treatment stage to the finishing device in which the web (W) is finished in the finishing device and from which finishing device the web (W) is pased further to a subsequent treatment stage. The web (W) is brought to a roll (11; 14) of the finishing device as supported substantially before a nip area (N1; N2). The web (W) is passed from the circumference of a roll (12; 15) of the finishing device as substantially supported after the nip area (N1; N2). The invention also relates to a device for passing a web in connection with a finishing device of a paper machine.
    Type: Application
    Filed: September 25, 2003
    Publication date: March 18, 2004
    Inventor: Pekka Koivukunnas
  • Patent number: 6702924
    Abstract: A roll for use in an air press assembly of a papermaking machine has a pair of ends associated therewith. The roll includes a pair of edge portions with each edge portion extending to one of the pair of ends. Each edge portion has an edge surface portion composed of a first material, the first material having a first hardness. The roll further includes a middle portion located between the pair of edge portions, the middle portion having a middle surface portion composed of a second material. The second material has a second hardness, the second material being harder than the first material. The first material is preferably a soft, seal material which promotes reduced air leakage from the air press assembly.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: March 9, 2004
    Assignee: Voith Paper Patent GmbH
    Inventor: David A. Beck
  • Patent number: 6699364
    Abstract: An improved method and apparatus for imparting a smooth surface to gypsum fiber panels. The method involves imparting energy to the surface of a slurry as the slurry is dewatered just prior to rehydration. The apparatus used to impart the energy is a water spray including a source of pressurized water such as a pump, a distribution manifold and a plurality of nozzles to direct the water spray at the surface of the slurry. In operation, the water spray is directed against the surface of the slurry. The flow disrupts the slurry to a fraction of its total depth, thus dispersing clumps or flocs of commingled crystals and fibers in the depth that would give the surface of the finished panel a rough surface if they were allowed to remain.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: March 2, 2004
    Assignee: United States Gypsum Corporation
    Inventors: Weixin Song, David Paul Miller
  • Patent number: 6699362
    Abstract: Fine paper is manufactured in a paper machine by feeding stock into a headbox (100) from a short circulation the stock volume of which has been minimized, water is removed from the paper web (W) most advantageously in a gap former (250), in the press section (300) water is pressed out of the paper web (W) in an extended nip press (360), in the dryer section (400) impingement drying (450) is employed for the drying of the paper web (W), the paper web (W) is pre-calendered in a calender (900) employing low nip loads, both surfaces of the paper web (W) are precoated at the same time, after precoating (500) the paper web (W) is dried by means of contact-free drying (660), the paper web (W) is coated in an on-line coating station/stations (700, 800), after which the paper web (W) is at least partly dried in a drying section/sections (750, 850) by means of contact-free drying of the paper web (W), and the paper web (W) is calendered in an on-line calender (900) while the linear load in each nip is regulated separat
    Type: Grant
    Filed: April 15, 2002
    Date of Patent: March 2, 2004
    Assignee: Metso Paper, Inc.
    Inventor: Pentti Rautiainen
  • Patent number: 6699361
    Abstract: A method for the production of a liner comprising at least a top layer and a base layer is provided, wherein a forming section with at least two forming units is used to create a fiber web, said fiber web being conveyed through a press section and further to a drying section, said press section comprising a number of roll nips and at least one impermeable transfer belt with at least one smooth surface, wherein said transfer belt runs through the last nip in the press section in such a manner that its top layer is pressed against said smooth surface of the transfer belt.
    Type: Grant
    Filed: September 7, 2000
    Date of Patent: March 2, 2004
    Assignee: Metso Paper Karlstad AB
    Inventor: Anders Leandersson
  • Publication number: 20040020618
    Abstract: In the method for precalendering a paper or paperboard web (W) a web that has undergone earlier dewatering stages is calendered to attain a suitable surface for the coating process. The web is calendered (C) one-sidedly in such a manner that the absorption level of the second side (W2) of the web entering the calendering, which is higher than the absorption level of the first side (W1), is reduced in the calendering nearly to the same level or at least to the same level with the first side (W1).
    Type: Application
    Filed: June 30, 2003
    Publication date: February 5, 2004
    Inventors: Johan Gron, Kari Sipi
  • Publication number: 20040020614
    Abstract: An improved method for imprinting a paper web during a wet pressing event is disclosed which results in asymmetrical protrusions corresponding to the deflection conduits of a deflection member. In one embodiment, differential velocity transfer during a pressing event serves to improve the molding and imprinting of a web with a deflection member. Improved deflection members are also disclosed. Improved tissue webs produced are also disclosed having useful sets of physical and geometrical properties, such as a pattern densified network and a repeating pattern of protrusions having asymmetrical structures.
    Type: Application
    Filed: May 9, 2003
    Publication date: February 5, 2004
    Inventors: Jeffrey Dean Lindsay, Mark Alan Burazin, Fung-jou Chen, Michael Alan Hermans, Philip Sim Lin, Kenneth Curtis Larson
  • Patent number: 6676807
    Abstract: A process for increasing the tactile properties of a base web without adversely affecting the strength of the web is disclosed. In general, the process includes the steps of placing a base web in between a first moving conveyor and a second moving conveyor. The conveyors are then wrapped around a shear inducing roll which creates shear forces that act upon the base web. The shear inducing roll typically has a relatively small diameter. In some applications, more than one shear inducing roll may be incorporated into the system. In other applications, the shear inducing roll can also be a nip roll for decreasing the caliper of the base web. The shear inducing roll may be stationary, as in the form of a stationary shoe with a convex edge, or may rotate. In one embodiment, the shear inducing roll can rotate on an air bearing.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: January 13, 2004
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Frank S. Hada, Keith D. Glass, Ronald F. Gropp, Patricia Riedl, Douglas C. Thomas
  • Patent number: 6666954
    Abstract: Pressing arrangement having two press rolls forming at least one press nip for dewatering a web, and two dewatering belts arranged to be guided through the at least one press nip with the web. The dewatering belts positioned on opposite sides of the web to absorb water. A common guidance path, formed by the dewatering belts guiding the web, is located after the at least one press nip. A separating roll and a lower one of the dewatering belts is arranged to wrap the separating roll along with the web at an end of the common guidance path. An upper one of the dewatering belts is arranged to be guided away from the web in a separation path in a region of the separating roll. Lower dewatering belt and web wrap the separating roll subsequent to the separation path at a wrapping angle of at least about 30°.
    Type: Grant
    Filed: March 8, 2001
    Date of Patent: December 23, 2003
    Assignee: Voith Paper Patent GmbH
    Inventors: Gerhard Kotitschke, Wolfgang Mayer, Roland Mayer
  • Publication number: 20030228444
    Abstract: Uncreped throughdried tissue sheets are mechanically treated by calendering and embossing to provide a unique combination of desirable properties to the resulting sheet, which exhibits more surface uniformity, improved softness, high bulk and absorbency.
    Type: Application
    Filed: June 7, 2002
    Publication date: December 11, 2003
    Inventors: Angela Ann Johnston, Thomas Allan Eby, Anne Catherine Paschke, Michael John Smith
  • Publication number: 20030221807
    Abstract: A creped tissue paper is made by creping a tissue paper from a drying cylinder with a creping doctor, receiving the creped web on a carrying fabric, carrying the creped web on the carrying fabric through a compression nip that compresses the web to substantially reduce its thickness and improve softness of the web, and carrying the creped, compressed web on the carrying fabric or a subsequent fabric to a reel-up.
    Type: Application
    Filed: February 26, 2003
    Publication date: December 4, 2003
    Applicant: Metso Paper Karlstad AB
    Inventors: Ingvar Berndt Erik Klerelid, Johan Ulf Ragard
  • Patent number: 6616813
    Abstract: Pressing arrangement for treating a fibrous material web that includes opposing surface and shoe press roll including non-rotationally mounted carrier, flexible pressing jacket arranged to circulate around carrier, and at least one press shoe supported on carrier. The at least one press shoe is arranged to press flexible pressing jacket against opposing surface. Shoe press roll and opposing surface are arranged to form press nip elongated in jacket travel direction, and the at least one press shoe includes outlet arranged to extend beyond, in jacket travel direction, an end of press nip. The at least one press shoe is arranged to press pressing jacket against opposing surface such that, in a region of press nip, pressing jacket is moved radially outside of a circular path formed by pressing jacket in an unstressed state, and pressing jacket is arranged to rest against a free end of outlet.
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: September 9, 2003
    Assignee: Voith Paper Patent GmbH
    Inventor: Gerd Komposch
  • Publication number: 20030150579
    Abstract: A method and an apparatus for the production and processing of a material web, specifically a paper or cardboard web are described, whereby the material web is first wound and subsequently unwound for a subsequent finishing process and whereby the material web after being wound and prior to the finishing process is remoistened so that its moisture immediately prior to the finishing process is higher than that immediately prior to winding.
    Type: Application
    Filed: February 6, 2003
    Publication date: August 14, 2003
    Inventor: Joerg Maurer
  • Publication number: 20030150580
    Abstract: In the method, a release layer is formed on base paper to manufacture release paper. The base paper is calendered before forming the release layer in-line on the same production line. A further object of the invention is equipment for manufacturing release paper, which equipment can be used to form a release layer on top of a base paper. The equipment comprises a calender (4) located before the release layer forming unit (5) in-line on the same production line.
    Type: Application
    Filed: December 5, 2002
    Publication date: August 14, 2003
    Applicant: Lohjan Paperi Oy
    Inventors: Rolf Moring, Timo Pahl
  • Patent number: 6605189
    Abstract: Suction box in a paper machine including a vacuum chamber, a deck or a number of substantially U-section holders open toward a wire and ribs arranged in the deck or the holders so that they can be loaded against the wire. At least in a running situation, the deck of the suction box is curved or the ribs are arranged to provide a curve run of the wire so that the wire tension of the curved run over the deck or ribs serves to lower a normal force which is produced by the vacuum present in the suction box and which is effective between the wire and the deck or ribs.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: August 12, 2003
    Assignee: Metso Paper, Inc.
    Inventors: Jorma Snellman, Antti Poikolainen, Ari Puurtinen, Samppa Salminen
  • Patent number: 6602387
    Abstract: The present invention relates to a paper tissue, and in particular to facial tissue, and disposable handkerchiefs. Claimed and described is a paper tissue comprising at least two plies, characterized in that the paper tissue has a physiological surface smoothness parameter of less than 700 microns, preferably from 650 microns to 50 microns, more preferably from 650 microns to 300 microns and in combination has a caliper per ply of more than 0.09 mm, preferably from 0.09 mm to 0.5 mm, more preferably from 0.1 mm to 0.2 mm. In one preferred embodiment a three-ply tissue with embossed middle ply is provided. Further is a related process claimed and described.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: August 5, 2003
    Assignee: The Procter & Gamble Company
    Inventors: Scott Thomas Loughran, Hasnaa Agouzoul, Claudia Christiane Bollinger-Krause, Marianne Malmbak, Anja Werth
  • Patent number: 6599396
    Abstract: There is disclosed a roller (10) for a texturing press on a papermaking machine adapted to be fitted with an interchangeable engraved sleeve (12) and comprising a cylindrical shell (20, 21) having a plurality of axially and circumferentially spaced apertures (23) in its peripheral surface through which pressure fluid may be ejected and at least one axially extending channel (22) within the thickness of the shell for the supply of pressure fluid to the apertures.
    Type: Grant
    Filed: November 6, 2001
    Date of Patent: July 29, 2003
    Assignee: Arjo Wiggins Fine Papers Limited
    Inventors: Angus MacSween, Austin Clark, Michael McCormick, David Lees
  • Publication number: 20030129899
    Abstract: Method and apparatus for fiber-reinforced mats and asphalt coated sheets for use in roofing and water resistant membranes. Mats and sheets according to the invention exhibit superior tensile strength and resistance to wrinkling. The mat aspect of the invention comprises product and method for producing mats comprised of organic matting materials such as cellulose, paper, other wood products, or felt, and reinforcing fibers such as fiberglass, plastics, and other relatively high-strength natural and synthetic fibers, the fibers being incorporated within the matting material during production of the mat. The sheet aspect of the invention comprises product and method for mats of the type described above with added asphalt coatings to improve the water-proofing qualities of the mats.
    Type: Application
    Filed: June 29, 1999
    Publication date: July 10, 2003
    Inventor: JOHN R. FIELDS
  • Patent number: 6589390
    Abstract: Press section of a machine for producing a fiber material, web and process for guiding a fiber material web through the press section. The press section includes at least two double-felted presses arranged in series in a travel direction of the fiber material web. An upstream one of the at least two double-felted presses may include a deflection-controlled shoe press roll and a suction roll, and the deflection-controlled shoe press roll and the suction roll may be arranged to form an upstream press nip. The process may include guiding the fiber material web through a press nip of an upstream one of the at least two double-felted presses formed by a deflection-controlled shoe press roll and a suction roll.
    Type: Grant
    Filed: January 15, 1999
    Date of Patent: July 8, 2003
    Assignee: Voith Sulser Papiertechnik Patent GmbH
    Inventor: Wolfgang Mayer
  • Publication number: 20030121631
    Abstract: Thermoplastic fibres of different melting points are present in an aqueous slurry of refractory fibres, binder and flocculant. The slurry is passed through a screen to form a wet body which is heated to dry the body and melt the thermoplastic fibres to bind the refractory fibres together.
    Type: Application
    Filed: November 7, 2002
    Publication date: July 3, 2003
    Inventors: John Dinwoodie, Kathleen E. Wade, Stella M. Young
  • Publication number: 20030116296
    Abstract: A method for increasing caliper control of a fibrous web as the web is wound onto a roll is provided. The method includes winding the fibrous web containing cellulosic fiber onto the roll to form a wound product and conveying the web through a nip prior to winding the web onto the roll. The nip is configured to apply a pressure to the web to selectively decrease the caliper of the web as the web is wound onto the roll. Also disclosed is a system for controlling the caliper of the fibrous web in which a calender device forms a nip through which the fibrous web is conveyed. The system includes an adjustment device, which is configured to adjust the nip of the calender device to increase pressure on the fibrous web as the diameter of the roll increases thus increasing uniformity of the caliper of the fibrous web.
    Type: Application
    Filed: December 20, 2001
    Publication date: June 26, 2003
    Applicant: Kimberly-Clark Worldwide, Inc.
    Inventors: Philip S. Lin, Paul Bartocci, Pat Samolinski, Lynn Matheus, Peter J. Allen, Mary M. Zielinski, Kenneth F. Arni
  • Publication number: 20030113457
    Abstract: A method for directly forming and finishing a web product is provided. The method includes forming a web on a forming apparatus, continuously transferring the formed web to a conveyor, performing a converting step on the web as the web is continuously supported and advanced on the conveyor, and finishing the web into a product substantially ready for packaging. A system for performing the method is also provided.
    Type: Application
    Filed: December 19, 2001
    Publication date: June 19, 2003
    Inventors: Robert J. Seymour, John R. Hanson, E. Kent Isom, James L. Baggot, Steven J. Wojcik, Kenneth A. Pigsley, Robert L. Clarke, Randall J. LeValley, Charles H. Goerg
  • Patent number: 6569288
    Abstract: In the method for manufacturing surface-treated printing paper, a paper web is first dried down to a target moisture of the surface treatment, and it is wetted again to the target moisture before the surface treatment. The rewetting to the target moisture is conducted on the web running to the surface treatment before a device effecting the surface treatment of the web, as seen in the travel direction of the web. Before re-wetting, the moisture profile of the web is adjusted in the drying section by wetting the web at a point which is located before the area of the heavy shrinkage (cd shrinkage area) in the travel direction of the web.
    Type: Grant
    Filed: January 9, 2001
    Date of Patent: May 27, 2003
    Assignee: Metso Paper, Inc.
    Inventors: Pekka Linnonmaa, Antti Heikkinen
  • Publication number: 20030094256
    Abstract: Shoe roll for dewatering or calendering a moving fibrous web. The shoe roll includes a flexible, replaceable press cover having two end regions and at least one end supporting disc. At least one of the two end regions have reinforcing inlays and are releasably coupled to the at least one end supporting disc. A quick-acting closure, located between an inner wall of the at least one end region and the at least one end supporting disc, includes a radially pressing element structured to exert a pressing force and to simultaneously seal an interior of the shoe roll from an external environment. 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: November 21, 2002
    Publication date: May 22, 2003
    Applicant: Voith Paper Patent GmbH
    Inventor: Helmut Heinzmann
  • Publication number: 20030084952
    Abstract: The present invention is a woven sculpted fabric for the manufacture of a tissue web having a tissue contacting surface. The tissue contacting surface of the woven sculpted fabric includes at least a first group of strands and a second group of strands wherein the first group of strands extend in the cross-machine direction of the woven sculpted fabric and the second group of strands extend in the machine direction of the woven sculpted fabric.
    Type: Application
    Filed: November 2, 2001
    Publication date: May 8, 2003
    Inventors: Mark Alan Burazin, Jeffrey Dean Lindsay
  • Publication number: 20030085010
    Abstract: The present invention is a method of making a tissue product. An aqueous suspension of papermaking fibers is deposited onto a forming fabric thereby forming a wet tissue web. The wet tissue web is transferred to a sculpted fabric having a tissue machine contacting side and a tissue contacting side. The tissue contacting side includes an upper porous member comprising a base with nonwoven elevated regions thereon. The nonwoven elevated regions comprise a first group of nonwoven raised elements and a second group of nonwoven raised elements, both raised relative to the base. The first group of nonwoven raised elements extends in at least a first direction and the second group of nonwoven raised elements extends in at least a second direction.
    Type: Application
    Filed: November 2, 2001
    Publication date: May 8, 2003
    Inventors: Mark Alan Burazin, Jeffrey D. Lindsay
  • Publication number: 20030085011
    Abstract: The present invention is a method of making a tissue product. An aqueous suspension of papermaking fibers is deposited onto a forming fabric thereby forming a wet tissue web. The wet tissue web is transferred to a woven sculpted fabric having a tissue contacting surface. The tissue contacting surface includes at least a first group of strands and a second group of strands wherein the first group of strands extend in a first direction and the second group of strands extend in a second direction.
    Type: Application
    Filed: November 2, 2001
    Publication date: May 8, 2003
    Inventors: Mark Alan Burazin, Kai F. Chiu, Jeffrey Dean Lindsay
  • Publication number: 20030070781
    Abstract: A tissue sheet is made using a modified wet pressing process employing an integrally sealed air press. After initial formation and conventional vacuum dewatering, the wet web may be conformed to the surface contour of a relatively coarse fabric to give the web a textured surface. By creating a pressure differential across the web, the air press noncompressively dewaters the wet web to a consistency of about 30 to about 40 percent prior to a heated drying cylinder. The web may be dried to substantially preserve its three-dimensional, throughdried-like texture. The process provides a web having an exceptionally high degree of bulk and absorbency not expected in wet-pressed products.
    Type: Application
    Filed: July 18, 2002
    Publication date: April 17, 2003
    Inventors: Michael Alan Hermans, Frank Stephen Hada
  • Patent number: 6547924
    Abstract: A paper machine for manufacturing textured soft paper comprises a press section with a press nip, through which an impermeable belt and a felt run with the fibrous web between them, a drying cylinder and a transfer roll forming a nip for transfer of the web to the drying cylinder. According to the invention the belt is a texturing belt having a back layer and a web-contacting layer having depressions with surface portions situated between them to form a relief pattern in the web upon passage through the press nip, the texturing belt running from the press to the drying cylinder in order to carry the textured web to the transfer nip. The felt runs away from the texturing belt before a water film formed in the press nip on the texturing belt breaks up. A device is provided before the transfer nip to apply adhesive on the drying cylinder.
    Type: Grant
    Filed: July 27, 2001
    Date of Patent: April 15, 2003
    Assignee: Metso Paper Karlstad AB
    Inventors: Ingvar B.E. Klerelid, Anders T. Lindén, Robert S. Ampulski, Ward W. Ostendorf, Osman Polat
  • Patent number: 6547926
    Abstract: A process for increasing the tactile properties of a base web without adversely effecting the strength of the web is disclosed. In one embodiment, the process includes the steps of placing a creped base web between a first moving conveyor and a second moving conveyor. The conveyors are then wrapped around a shear-inducing roll which creates shear forces and compressive forces that act upon the base web. The shear forces disrupt the web, increasing the softness and decreasing the stiffness of the web. The compressive forces are localized at the areas where the fabric knuckles contact the base web, imparting a unique fabric-imprinted pattern to the web with limited caliper reduction. The shear-inducing roll typically has a relatively small diameter. In some applications, more than one shear-inducing roll may be incorporated into the system.
    Type: Grant
    Filed: December 10, 2001
    Date of Patent: April 15, 2003
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Robert A. Drew, Frank G. Druecke, Patricia Riedl, Peter J. Allen
  • Publication number: 20030056915
    Abstract: The invention relates to a method for producing a calendered paper web. According to the method, a paper web is formed from a fibrous raw material in a paper machine, and the paper web is calendered. According to the invention, a fibrous raw material is used which is at least partly made up of a chemimechanical pulp of a wood species of the Populus family, and the calendering is performed by online soft-calendering. By means of the invention, the gloss and smoothness of papers can be improved without decreasing their bulk.
    Type: Application
    Filed: October 23, 2002
    Publication date: March 27, 2003
    Inventors: Soili Hietanen, Markku Leskela
  • Patent number: 6533900
    Abstract: A method in a paper machine for transferring a paper web from a wet wire in a former section to a pick-up fabric or an equivalent transfer fabric of a press section, including the steps of forming a pick-up point on the wet wire and separating an edge strip from at least one edge of the web prior to the pick-up point by means of at least one cutting device. The method further includes separating the web from the wet wire and passing the web onto the pick-up fabric at the pick-up point. The method also includes applying a pressure difference to the at least one edge strip through the wet wire or the pick-up fabric at or after the pick-up point to cause the at least one edge strip to either follow the wet wire or become separated from the pick-up fabric after the pick-up point and to be placed in a broke system arranged beneath the paper machine.
    Type: Grant
    Filed: February 13, 2001
    Date of Patent: March 18, 2003
    Assignee: Metso Paper, Inc.
    Inventors: Janne Puustinen, Samppa Salminen, Pertti Heikkilä, Ari Puurtinen, Antti Poikolainen, Jorma Laapotti, Mika Viertola
  • Patent number: 6517683
    Abstract: The invention relates to a press in a machine for the production or treatment of a continuously running web of cellulosic fibrous material, for instance a paper, tissue or board machine. The press includes a press device and a counter element arranged opposite the press device, which is arranged to form a press zone in the form of an extended press nip in cooperation with the press device having a certain width in the machine direction for pressing the fibrous web as it runs through the press nip.
    Type: Grant
    Filed: May 29, 2001
    Date of Patent: February 11, 2003
    Assignee: Metso Paper Karlstad AB
    Inventor: Erik Brox
  • Publication number: 20030024672
    Abstract: The invention relates to a method and arrangement for processing a wide paper or board web in connection with such a manufacturing method, in which a wide base web (14) is manufactured and the base web is processed in at least one processing stage before the separation of the finished product by cutting it transversely from the web on the production line. According to the invention, the base web (14) is divided at least once to form two part-webs (17, 18) before the separation of the finished product by cutting it transversely from the web and before the final processing stage preceding separation. At least one part-web (17, 18) formed in this manner is guided to a finishing stage before the separation of the finished product by cutting it transversely from the web on the production line.
    Type: Application
    Filed: August 30, 2002
    Publication date: February 6, 2003
    Inventors: Mika Viljanmaa, Reijo Pietikainen
  • Patent number: 6514385
    Abstract: Press section of a machine and process for producing webs. The press section includes a shoe press including a shoe press unit and a counter roll. The shoe press unit includes at least two press shoes and an elastic liquid-impermeable press belt guided over the at least two press shoes, and the at least two press shoes have different lengths measured in a web travel direction and each of the two press shoes is arranged for movement (i.e. alternatively positionable) between an idle position and a press position facing the counter roll.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: February 4, 2003
    Assignee: Voith Paper Patent GmbH
    Inventors: Thomas Thoröe Scherb, Harald Schmidt-Hebbel
  • Publication number: 20030010461
    Abstract: The invention relates to a calender intended to calender a paper or board web (4), which calander comprising a calendering section, in which there are at least two members, such as rolls (1, 2, 3), in nip contact, between which the web (4) being calendered is arranged to run. For reducing the moisture and heat leaving the web (4) while it is being calendered a wall (16, 17), covering at least part of the calendering section, is formed from the web (4) being calendered by changing its direction of travel.
    Type: Application
    Filed: July 23, 2002
    Publication date: January 16, 2003
    Inventor: Mika Viljanmaa
  • Publication number: 20030000672
    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: Application
    Filed: July 12, 2002
    Publication date: January 2, 2003
    Inventor: Mika Viljanmaa
  • Patent number: 6500305
    Abstract: A process and an apparatus for the manufacture of SC-A paper having a high gloss and high smoothness, wherein the paper arriving from the paper machine is supplied on-line to a supercalender (multinip soft calendar), and wherein the paper travels through a plurality of nips for achieving the desired gloss and smoothness properties. The paper web arriving from the paper machine and supplied on-line to a supercalender (multinip soft calendar) is moistened with steam immediately prior to the first nip of the supercalender and is guided through the first nip before the increased moisture of the surface resulting from the application of steam has dropped below a predetermined value in the range of 12% to 25%.
    Type: Grant
    Filed: November 13, 2000
    Date of Patent: December 31, 2002
    Assignee: V. I. B. Apparatebau GmbH
    Inventors: Stefan Winheim, Rudolf Mann, Manfred Diebel
  • Patent number: 6500304
    Abstract: A method for changing the natural frequency of a nip roll construction in a paper or board machine. In the method, the bearing elasticity of a hydrostatic bearing element (10, 20, 30, 40) of at least one roll (1) in the nip roll construction is changed, in which connect the natural frequency of the roll (1) is also changed. The device that carries out the method comprises a pressure medium accumulator (39), which has been connected to the pressure side of a loading element (13, 23, 33) of at least one hydrostatic bearing element (10, 20, 30).
    Type: Grant
    Filed: February 14, 2001
    Date of Patent: December 31, 2002
    Assignee: Metso Paper, Inc.
    Inventors: Kari Holopainen, Juha Ehrola