Pressure Patents (Class 162/205)
  • Patent number: 7445693
    Abstract: Two axially parallel rolls are pressed against each other in a device for producing and/or treating a moving material web. Sensor elements are arranged in the force transmission path running from the force-producing elements via the rolls, outside roll bodies of the two rolls. As a result of displacing the sensor elements out of the roll bodies of the rolls, the production of the rolls is less complicated and less expensive. No sensors have to be embedded in the roll bodies, which opens up the possibility of using standard rolls. In addition, the occasional grinding of the rolls can in this way be performed without any regard to the sensor elements. Nevertheless, the pressure prevailing between the rolls can continue to be measured directly, since the sensor elements are arranged in the transmission path of the pressing force.
    Type: Grant
    Filed: October 14, 2005
    Date of Patent: November 4, 2008
    Assignee: Voith Paper Patent GmbH
    Inventors: Manfred Ueberschär, Christoph Henninger, Eckard Wozny, Horst Kaipf
  • Patent number: 7438784
    Abstract: A method and a device for calendering a paper or paperboard web, in which the web is led first into a calendering step and then into a reeling step. At least one edge area of the web is calendered separately in the reeling step.
    Type: Grant
    Filed: June 17, 2004
    Date of Patent: October 21, 2008
    Assignee: Metso Paper, Inc.
    Inventor: Erkki Kirveskari
  • Patent number: 7435312
    Abstract: An improved paper and the process of making an improved paper web are disclosed. The improved paper is characterized as having two regions; one is a network (or open grid) region and the other is a plurality of domes. At least a portion of either region of the paper web contains a bonding material that penetrates at least partially through the paper's thickness.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: October 14, 2008
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Jeffrey Dean Lindsay, Michael Alan Hermans, Mike Thomas Goulet, Mark John Hassman, Maurizio Tirimacco, Jeffrey Janne Johnson, Rebecca Catherine Mohr
  • Patent number: 7435313
    Abstract: The present invention relates to an apparatus for producing a deep-nested embossed paper product comprising two embossing cylinders, each cylinder having a plurality of protrusions on its surface. The protrusions on each cylinder are disposed in a non-random pattern where the respective non-random patterns are coordinated to each other. The two embossing cylinders are aligned such that the respective coordinated non-random pattern of protrusions nest together such that the protrusions engage each other to a depth of greater than about 1.016 mm. The protrusions each comprise a top plane and sidewalls, with the top plane and sidewalls meeting at a protrusion corner. The protrusion corners of the protrusions of the embossing cylinders of the apparatus of the present invention have a radius of curvature ranging from about 0.076 mm to about 1.778 mm.
    Type: Grant
    Filed: May 17, 2005
    Date of Patent: October 14, 2008
    Assignee: The Procter & Gamble Company
    Inventors: Donn Nathan Boatman, Kevin Benson McNeil, Matthew Alan Russell, George Vincent Wegele, Kevin Mitchell Wiwi
  • Publication number: 20080236776
    Abstract: The invention relates to a method for producing a paper web or another fibrous web. According to said method, the fibrous web is impinged upon by pressure in the penultimate press nip and then in a last press nip of a press section. One face of the fibrous web is in contact with a smooth surface when penetrating the penultimate press nip while the other face of the fibrous web is in contact with a smooth surface the when penetrating the last press nip.
    Type: Application
    Filed: June 20, 2006
    Publication date: October 2, 2008
    Inventor: Ulrich Begemann
  • Publication number: 20080233354
    Abstract: Disclosed is an uncoated facestock product having enhanced printability, holdout, and edge wick properties, which are attained through a combination of manufacturing techniques including increased refining of the furnish, sizing, increased hard nip calendering, and the use of extended nip calendering. The resulting uncoated facestock product has the following properties: a density between about 0.7 and 1.0 g/cc and/or an ash content of less than about 15% as measured by the 525° C. standard test method; and a finished surface having a Sheffield smoothness between about 50 and 150 Sheffield units and a Parker Print Surf roughness (PPS-10) less than about 5.0 microns.
    Type: Application
    Filed: May 23, 2008
    Publication date: September 25, 2008
    Inventors: D. W. Anderson, Kristine Butts
  • Patent number: 7422659
    Abstract: A method and an arrangement for treating a web (2) of paper or board is described, in which a functional coating (5) is applied to the web (2) and the web (2) is then calendered. It is wished to obtain a web provided with a functional coating in a cost-effective fashion. This is achieved through the following combination: the functional coating (5) is applied without direct contact, the web (2) is calendered online in conjunction with the application of the coating, calendering takes place in a broad nip (18) in a shoe calender (9), which exhibits a shoe roller (10) with a rotating outer cover (11) and a squeeze roller (14).
    Type: Grant
    Filed: May 4, 2005
    Date of Patent: September 9, 2008
    Assignee: Voith Paper Patent GmbH
    Inventors: Joerg Rheims, Ulrich Rothfuss
  • Publication number: 20080210397
    Abstract: A belt press for a paper machine, the belt press including a roll having an exterior surface and a permeable belt. The permeable belt has a first side and is guided over a portion of the exterior surface of the roll. The permeable belt has a tension of at least approximately 30 KN/m, the first side has an open area of at least approximately 25% and a contact area of at least approximately 10%.
    Type: Application
    Filed: December 23, 2004
    Publication date: September 4, 2008
    Inventors: Thomas Thoroe Scherb, Hubert Walkenhaus, Jeffrey Herman, Luiz Carlos Silva
  • Patent number: 7416637
    Abstract: A low-compaction method of making an absorbent cellulosic web includes: forming a nascent web from a papermaking furnish; dewatering the nascent web to a consistency of from about 10 to about 30 percent on a foraminous forming support traveling at a first speed; rush-transferring the web at a consistency of from 10 to about 30 percent to an open texture fabric traveling at a second speed slower than the first speed of the forming support; further dewatering the web on the impression fabric to a consistency of from about 30 to about 60 percent by way of (i) combining the open texture fabric bearing said web with a fluid distribution membrane and an anti-rewet felt as the three pass through a nip into a pressure chamber defined in part by a plurality of nip rolls, the fluid distribution membrane bearing against the side of the open texture fabric away from the web, with the anti-rewet felt bearing against the web, and (ii) applying a pneumatic pressure gradient from the distributor membrane through the web ther
    Type: Grant
    Filed: June 27, 2005
    Date of Patent: August 26, 2008
    Assignee: Georgia-Pacific Consumer Products LP
    Inventors: Frank C. Murray, Greg A. Wendt
  • Publication number: 20080196855
    Abstract: A permeable belt, a belt press including a roll having an exterior surface and the permeable belt, and a method of drying or pressing a web with the permeable belt. The permeable belt can be tensioned to at least 30 KN/m. A side of the permeable belt has an open area of at least approximately 25% and a contact area of at least approximately 25%. 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: Application
    Filed: April 22, 2008
    Publication date: August 21, 2008
    Applicant: VOITH PATENT GmbH
    Inventors: Jeffrey HERMAN, Thomas Thoroee Scherb, Luiz Carlos Silva, Hubert Walkenhaus
  • Patent number: 7413629
    Abstract: The present invention relates to processes for producing a deep-nested embossed paper products. The invention relates to a process for producing a deep-nested embossed paper products comprising one or more plies of paper where the resulting embossed ply or plies of paper comprise a plurality of embossments having an average embossment height of at least about 650 ?m and have a high finished product wet burst strength relative to the unembossed wet strength.
    Type: Grant
    Filed: June 8, 2005
    Date of Patent: August 19, 2008
    Assignee: The Procter & Gamble Company
    Inventors: Wayne Robert Fisher, Donn Nathan Boatman, David Mark Rasch, Nicholas Jerome Wilke, II
  • Patent number: 7407560
    Abstract: A paper tissue such as a facial tissue or a disposable handkerchief and a method of making the tissue. The method includes passing the tissue paper web through an embossing nip formed between a first and a second embossing roll, wherein at least one of the embossing rolls comprises at least 30 embossing elements per square centimeter and applying a transferable lotion to at least portions of the tissue paper web.
    Type: Grant
    Filed: July 15, 2003
    Date of Patent: August 5, 2008
    Assignee: The Procter & Gamble Company
    Inventors: Klaus Hilbig, Marcel Karel Nelis Liplijn, Birgit Zint-Schuessler
  • Patent number: 7407562
    Abstract: The moisture profile and/or moisture gradient of a paper web of at least SC quality paper is controlled in a paper machine comprising a calender (1) which has at least two roll stacks (21, 22; 31, 32), one stack has at least three rolls and another has at least five rolls. The web is moisturized to a desired pre-moisture content M1 by a pre-moisturizer (7) before the calender. At least one intermediate moisturizer (3) is arranged between two roll stacks moisturizes the web to a desired intermediate moisture content M2 before the last roll stack (31, 32), in which the web is dried to a desired final moisture value M3. For continuously controlling and optimizing the moisture profile and/or moisture gradient of the web, the pre-moisturizing W1 of the web is controlled by a pre-moisturizer (7) control parameter which corresponds to the final moisture value M3 of the web.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: August 5, 2008
    Assignee: Metso Paper, Inc.
    Inventors: Antti Heikkinen, Harri Kuosa, Pekka Linnonmaa, Hannu Lätti, Markku Kyytsönen, Markko Jaakkola
  • Patent number: 7399379
    Abstract: The present invention relates to a sheet structure for electrical insulation or flame resistance comprising a barrier ply having a mica-rich face and a mica-poor face and a reinforcing ply containing a saturable backing layer attached to the mica-poor face of the barrier ply.
    Type: Grant
    Filed: August 24, 2005
    Date of Patent: July 15, 2008
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Mikhail R. Levit, Laurence N. Bascom
  • Patent number: 7396436
    Abstract: A process for making a unitary fibrous structure comprises steps of: providing a fibrous web comprising a plurality of cellulosic fibers randomly distributed throughout the fibrous web and a plurality of synthetic fibers randomly distributed throughout the fibrous web; and causing co-joining of at least a portion of the synthetic fibers with the cellulosic fibers and the synthetic fibers, wherein the co-joining occurs in areas having a non-random and repeating pattern. A unitary fibrous structure comprises a plurality of cellulosic fibers randomly distributed throughout the fibrous structure, and a plurality of synthetic fibers distributed throughout the fibrous structure in a non-random repeating pattern.
    Type: Grant
    Filed: April 10, 2006
    Date of Patent: July 8, 2008
    Assignee: The Procter & Gamble Company
    Inventors: Paul Dennis Trokhan, Dean Van Phan, Osman Polat
  • Patent number: 7390557
    Abstract: A method for manufacturing a web of paper and paperboard, in which method a spray-coating technique is used for applying a web treatment substance to at least one surface of a moving web. The qualities of the web treatment substance are selected such that at least the droplet size and viscosity of the web treatment substance are controlled such as to make the thickness of the applied web treatment substance essentially equal in at least two randomly selected sample areas. According to the invention, the applied coating conforms with the surface contour of the base sheet. A paper manufactured using the method.
    Type: Grant
    Filed: March 13, 2002
    Date of Patent: June 24, 2008
    Assignee: Metso Paper, Inc.
    Inventors: Markku Hämäläinen, Vilho Nissinen
  • Patent number: 7387711
    Abstract: A belt for use in a long nip press having an arcuate pressure shoe. The belt has at least one layer having a polymer resin coating on at least one surface thereof. The resin coating has a plurality of grooves arranged therein and wherein a number of the grooves has a length less than a length of the arcuate pressure shoe to reduce ingoing nip spray.
    Type: Grant
    Filed: November 15, 2004
    Date of Patent: June 17, 2008
    Assignee: Albany International Corp.
    Inventors: Keith Fitzpatrick, Bo-Christer Aberg, Michael G. Moriarty
  • Patent number: 7387707
    Abstract: An object is to provide a support for image-recording material excellent in dimension stability and smoothness, a manufacturing process of the support, and an image-recording material which employs such support and which can obtain a high quality image. Accordingly, provided is a support for an image-recording material which comprises at least a sheet of raw paper wherein a pressure drying treatment is performed at a temperature of from 100° C. to 200° C. on the raw paper sheet having a water content of from 30% to 70%, while applying pressure to a surface of the raw paper sheet on which an image-recording layer is to be formed, and a calender treatment is carried out afterwards using at least one calender.
    Type: Grant
    Filed: February 3, 2004
    Date of Patent: June 17, 2008
    Assignee: FUJIFILM Corporation
    Inventor: Shigehisa Tamagawa
  • Patent number: 7387703
    Abstract: In a method for manufacturing base paper for release paper, the body layer, which is formed of a fibre raw material, is surface sized with a surface treatment agent. Before the surface sizing, the body layer, whose moisture level is at least 13 wt. %, is calendered in a calender that comprises at least one nip formed between a hard-faced roll and a soft counter surface.
    Type: Grant
    Filed: November 24, 2004
    Date of Patent: June 17, 2008
    Assignee: UPM-Kymmene Corporation
    Inventors: Timo Koskinen, Kaj Koskinen, Pekka Aho, Seppo Särelä
  • Patent number: 7351307
    Abstract: A method of dewatering a fibrous web in a paper machine including the steps of carrying the fibrous web on a side of a first fabric; contacting the fibrous web with a side of a second fabric, the fibrous web being between the first fabric and the second fabric; and passing air successively through the first fabric, the fibrous web and the second fabric.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: April 1, 2008
    Assignee: Voith Paper Patent GmbH
    Inventors: Thomas Thoröe Scherb, Jeffrey Herman, Luiz Carlos Silva
  • Patent number: 7332059
    Abstract: Process for the manufacture of a fiber material web that includes passing the fiber material web to be dewatered through a press nip together with a carrier band; and subjecting the fiber material web to be dewatered to a pressing pressure of at least 3.3 MPa in the press nip for a time duration of at most 3 ms. 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: April 26, 2004
    Date of Patent: February 19, 2008
    Assignee: Voith Sulzer Papiertechnik Patent GmbH
    Inventors: Thomas Thoroe Scherb, Harald Schmidt-Hebbel
  • Publication number: 20080035291
    Abstract: A ticket stock and manufacturing process wherein a pulp is formulated from a blend of recycled printed papers, with added starch for enhancing sheet stiffness and reducing linting and dusting on cut edges of the stock. A preferred pulp comprises a blend of printed solid bleached sulfate plate stock, printed white groundwood-free paper, and printed groundwood paper such as printed newsprint or the like. In one embodiment, the blend comprises about 25-50 wt. % printed solid bleached sulfate plate stock, about 15-40 wt. % printed white groundwood-free paper, and about 15-40 wt. % printed groundwood paper. The printed papers are repulped with minimal mechanical refining, treated with steam injection for hydrating and softening the fibers and breaking up inks into fine particles, and formed into a web that is pressed, dried, and soft calendered. The caliper of the resulting stock is about 7 to 9 points.
    Type: Application
    Filed: July 21, 2006
    Publication date: February 14, 2008
    Inventors: Harris J. Bacon, Matthew Meister
  • Patent number: 7326319
    Abstract: A method for pre-calendering a board web is provided and comprises passing the board web in a pre-calendering process through at least one hard nip, formed by a metal roll and a counter roll, and through at least one long nip, formed by a thermo roll and a long-nip roll or a long-nip belt assembly. The surface of the board web is moistened with water prior to the board web passing through the at least one hard nip.
    Type: Grant
    Filed: November 15, 2002
    Date of Patent: February 5, 2008
    Assignee: Metso Paper, Inc.
    Inventors: Matti Lares, Mikko Tani
  • Patent number: 7323087
    Abstract: An anti-rewet fabric is used for carrying a fiber web through an air press. The ant-rewet fabric includes at least one air distribution fabric layer, one air distribution fabric layer being configured for contacting the fiber web, and a perforated film layer and/or a spectra membrane, at least the perforated film layer being made of a polymeric or polyester film. At least the perforated film layer has a first film side and a second film side, the first film side being one of laminated and attached to the one air distribution fabric layer.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: January 29, 2008
    Assignee: Voith Paper Patent GmbH
    Inventor: David A. Beck
  • Patent number: 7320744
    Abstract: A multiple-nip calender has a set of rolls (2) with roll nips (N) between the rolls. A moistening arrangement has a roll means (3) for moistening the fibre web comprising a damping unit (33) and rolls (32) guiding the fibre web (W). The roll means is located in a pocket (7) adjacent to the line (L) of the aligned set of rolls, the pocket being formed by a space defined by the fibre web (W), one idle roll (5) in the set of rolls and said roll means (3), the fibre web contacting said roll at two locations, in roll nips located on opposite sides of the roll mantle when viewed from the longitudinal axis of the roll, and circulating around the roll means (3). The fibre web (W) contacts said roll in the set of rolls preferably in the roll nip immediately preceding a reversing nip (N;N3).
    Type: Grant
    Filed: November 11, 2003
    Date of Patent: January 22, 2008
    Assignee: Metso Paper, Inc.
    Inventors: Hannu Pullinen, Jorma Haag
  • Patent number: 7303651
    Abstract: Ink jet printing paper capable of providing, by using a low permeablity or a nonpermeable supporting sheet, a high surface glossiness and a high dot reproducibility of a silver halide photograph level, an excellent absorptivity of ink, and a high recording density, and preventing cockling by ink solvent, comprising the low permeablity or the nonpermeable supporting sheet, at least one ink receiving layer coated on the supporting sheet, and a luster layer coated on the ink receiving layer, the ink receiving layer in contact with the luster layer comprising pigment, as a main component, having a specific surface area-based mode diameter of pore distribution of 100 nm or less and an average secondary particle size of 1.3 ?m or less, and the luster layer comprising pigment, as a main component, having an average primary particle size of 5 to 100 nm.
    Type: Grant
    Filed: November 8, 2002
    Date of Patent: December 4, 2007
    Assignee: Oji Paper Co., Ltd.
    Inventors: Shinichi Asano, Motoko Hiraki, Tomomi Takahashi, Hiromasa Kondo, Takeshi Iida, Ryu Kitamura
  • Patent number: 7288168
    Abstract: Machine and process for the manufacture of a paper web, in particular, a tissue paper or hygienic paper web. At least one pressing gap or nip is formed between a shoe pressing unit and a Yankee drying cylinder, through which a water absorbent carrier band, a water-impermeable pressing band and the web are passed. The pressing gap length is greater than approximately 80 mm, with the maximum pressing pressure of less than or equal to approximately 2 MPa. 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: December 23, 2003
    Date of Patent: October 30, 2007
    Assignee: Voith Sulzer Papiertechnik Patent GmbH
    Inventors: Thomas Thoroe Scherb, Harald Schmidt-Hebbel
  • Publication number: 20070240842
    Abstract: Dewatering system for dewatering a web. The system comprises a former, a belt press, and a structured fabric comprising a paper web facing side and being guided over a support surface and through the belt press. The structured fabric runs at a speed differential relative to a wire of the former. 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: Application
    Filed: April 13, 2007
    Publication date: October 18, 2007
    Applicant: VOITH PATENT GMBH
    Inventors: Thomas T. SCHERB, Luiz Carlos DA SILVA, Rogerio BERARDI, Danilo OYAKAWA
  • Publication number: 20070169907
    Abstract: A transport belt, in particular for machines for the production of web material such as paper or paperboard, the transport belt including a web material contact side having surface depressions, such that the surface depressions are filled with filler material to provide a substantially flat web material contact surface.
    Type: Application
    Filed: January 24, 2007
    Publication date: July 26, 2007
    Applicant: VOITH PATENT GMBH
    Inventors: Arved H. WESTERKAMP, Matthias SCHMITT
  • Patent number: 7235157
    Abstract: The invention relates to a method for controlling a surface quality variable (300) in one or more fiber webs (3) in a shoe calender (1) comprising one or more calender nips. In each calender nip of the shoe calender, the overall loading pressure of the shoe element (8) and the loading pressure difference between the leading edge (8?) and the trailing edge (8?) of the shoe element are controlled so as to achieve minimum difference between the determined values (300?) for the surface quality variables of the fiber web and the set values (300?) for the same quality variables after the shoe calender.
    Type: Grant
    Filed: August 23, 2001
    Date of Patent: June 26, 2007
    Assignee: Metso Paper, Inc.
    Inventors: Tapio Mäenpää, Kalle Hasu, Matti Lares, Pekka Koivukunnas
  • Patent number: 7201825
    Abstract: Discrete particles of cellulosic material are flowable and meterable. They are easily dispersible in an aqueous or a dry medium. The particles comprise singulated cellulose fibers that have been densified. The particles have a density of at least 0.3 g/cc.
    Type: Grant
    Filed: October 25, 2002
    Date of Patent: April 10, 2007
    Assignee: Weyerhaeuser Company
    Inventors: Ramon C. Dezutter, Michael R. Hansen
  • 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: 7186317
    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: December 12, 2003
    Date of Patent: March 6, 2007
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Paul Beuther, Frank Druecke, Jeffrey Holz
  • Patent number: 7179349
    Abstract: A web (W) is passed from a preceding treatment stage to a finishing device in which the web (W) is finished in the finishing device and from which finishing device the web (W) is passed 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 roIl (12; 15) of the finishing device as substantially supported afler the nip area (N1; N2). A device for passing a web in connection with a finishing device of a paper machine causes a web (W) to be brought by the device to the circumference of a roll (11; 14) of the finishing device substantially before a nip area (N1; N2) and/or the web (W) can be passed from the circumference of a roll (12; 15) of the finishing device substantially after the nip area (N1; N2).
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: February 20, 2007
    Assignee: Metso Paper, Inc.
    Inventor: Pekka Koivukunnas
  • Patent number: 7172679
    Abstract: A press device with an extended press nip for pressing of a continuous paper or paperboard web comprises a press shoe, a backing member, a support, and a plurality of loading cylinders with main axes in their longitudinal directions. The press shoe can be moved between different positions. A stop member is arranged downstream of the press shoe for transfer between and fixation at different stop positions in the machine direction. At least some of the loading cylinders or the support comprise members eccentrically arranged with respect to one or some of the main axes, which members can be brought into different eccentric positions with respect to the main axes. The eccentric position and the stop position controls the position of the press shoe during the pressing, and thereby the pressure curve.
    Type: Grant
    Filed: December 11, 2000
    Date of Patent: February 6, 2007
    Assignee: Metso Paper, Inc.
    Inventors: Lars Gustavsson, Erik Brox
  • Patent number: 7172680
    Abstract: For profiling a fiber web (W) a shoe roll (10) defines a roll nip (4) with an opposite counter-roll (3). The shoe roll (10) has a static roll frame (5), a shoe element (2) located at the roll nip (4) and an endless belt (6) rotating about the shoe element (2) and the static roll frame (5). A lubricating cycle (71) is provided between the endless belt (6) and the shoe element (2) in the roll nip. The surface of the web (W) is profiled in the nip by loading the loading element (8). Before or after the shoe element (2), the shoe roll (10) has a longitudinally extending profiling strip (1) which can be pressurized to be able to perform thickness profiling of the surface of the fiber web (W). The static roll frame (5) and the shoe element (2) the endless belt (6) rotate about the profiling strip.
    Type: Grant
    Filed: April 2, 2002
    Date of Patent: February 6, 2007
    Assignee: Metso Paper, Inc.
    Inventors: Risto Turunen, Stefan Kuni
  • Patent number: 7169259
    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: Grant
    Filed: October 10, 2003
    Date of Patent: January 30, 2007
    Assignee: Metso Paper Karlstad AB
    Inventor: Anders Tommy Lindén
  • Patent number: 7169260
    Abstract: A paper or paperboard web (W) is precalendered. 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: Grant
    Filed: June 20, 2001
    Date of Patent: January 30, 2007
    Assignee: Metso Paper, Inc.
    Inventors: Johan Grön, Kari Sipi
  • Patent number: 7144481
    Abstract: Endless steel band for belt presses, especially double belt presses, with a thickness between 2 mm to 4 mm, preferably 2.5 mm to 3.5 mm, which is turned around on drums of the belt press, and whose surface has a maximum medium roughness up to RZ 50.5 ?m, in which a plurality of depressions are provided starting from the surface of the steel strip and extending into the steel strip, the depressions being substantially evenly distributed and reaching from the surface of the steel strip 200 ?m to 600 ?m deep into the steel band. Such steel band can be used for the production of plates, preferably wood-based plates, especially chipboards, with elevations.
    Type: Grant
    Filed: November 4, 2003
    Date of Patent: December 5, 2006
    Assignee: Berndorf Band GmbH & Co.
    Inventor: Johannes Günther Simmel
  • Patent number: 7132036
    Abstract: A press felt for use in the press section of a papermaking machine. The felt is comprised of at least one base fabric to which at least one batt layer is attached by needling or another suitable method. A woven or nonwoven fibrous scrim may be included between the base fabric and the at least one layer of batt material, or between any two or more layers. At least one of the base fabric, the at least one layer of batt material, or the fabric scrim is comprised of polymeric fibers which are blended with fibers whose modulus of elasticity is substantially less than the modulus of elasticity of the polymeric fibers. Press felts manufactured in accordance with the teachings of the invention provide a retarded elastic spring-back in the vertical (or Z) direction of the felt following the mid-nip point in the press section. This retarded elastic spring-back advances the post nip separation position of the felt and the paper web towards the mid-nip point, thus reducing rewetting of the paper sheet.
    Type: Grant
    Filed: August 12, 2004
    Date of Patent: November 7, 2006
    Assignee: AstenJohnson, Inc.
    Inventors: Marc P. Despault, Brady S. Patterson, Graham Jackson
  • Patent number: 7112258
    Abstract: A dry end section for a paper-making machine for producing a high-bulk tissue is provided. Such a machine comprises a through-air dryer adapted to finally dry a paper web and a through-air drying fabric configured to transport the web through the through-air dryer. A separating device is included for facilitating separation of the web from the through-air drying fabric. A reel is also provided and is configured to receive the web thereon. The web is received directly on the separating device or on a fabric wrapped about the separating device. In some instances, the web may be compressed between the separating device and an adjacent roll or by a web-compressing device disposed along the fabric transporting the web. The web is then transported to the reel directly from the fabric or other support mechanism extending between the separating device and the reel, without free draw of the web. Associated methods are also provided.
    Type: Grant
    Filed: March 18, 2004
    Date of Patent: September 26, 2006
    Assignee: Metso Paper Karlstad Aktiebolag (AB)
    Inventors: Ingvar Berndt Erik Klerelid, Lars-Erik Roland Önnerlöv, Leif Sören Videgren
  • Patent number: 7070679
    Abstract: The invention teaches a method of manufacturing a high bulk, high gloss paperweb using a supercalender operation. A paperweb surface is coated with a plastic pigment. The paperweb is run through a multi-nip calender device wherein the nip load of the paperweb is maintained at a load of about 1,000 pounds per linear inch at each nip. The temperature of the hard rolls are about 450 degrees Farenheit or less.
    Type: Grant
    Filed: January 16, 2003
    Date of Patent: July 4, 2006
    Assignee: NewPage Corporation
    Inventors: David B. Cason, S. Craig Petro, Stig V. Renvall, Bhima Sastri
  • Patent number: 7060161
    Abstract: There is provided a method for restraining deformation of a nip roll, in which polygonal deformation of nip rolls that are in contact with each other is restrained, so that vibration produced by the deformation is decreased. The diameter ratio between the first and second nip rolls 1 and 2 is set at a value different from 1, by which both of the numbers of polygon sides of the rolls 1 and 2 are prevented from becoming integers or values close to integers. Thereby, polygonal deformation of nip rolls that are in contact with each other, so that vibration produced by the deformation is decreased.
    Type: Grant
    Filed: March 11, 2004
    Date of Patent: June 13, 2006
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Hideki Hirooka, Kiyoshi Nakano, Hiroshi Miura, Atsuo Sueoka, Takahiro Ryu
  • Patent number: 7045036
    Abstract: A method and assembly is disclosed for manufacturing a sized web of paper or paperboard, the method comprising the steps of first forming the web at a headbox (1) from a stock comprising at least water and fiber, then pressing the web for water drainage, and finally drying the web by heating. Size furnish is added to the web so that at least a portion of the overall amount of size is added to the web prior to initiating the drying of the web by heating, and at least a portion of the overall amount of size is applied to the web after initiating the drying of the web.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: May 16, 2006
    Assignee: Metso Paper, Inc.
    Inventors: Juha Lipponen, Johan Grön, Sami Anttilainen, Juha S. Kinnunen
  • Patent number: 7041196
    Abstract: A fibrous structure and method for making the fibrous structure, wherein the method includes the steps of: providing a plurality of cellulosic fibers onto a forming member having a pattern of channels such that at least some of the cellulosic fibers are disposed in the channels; providing a plurality of synthetic fibers onto the cellulosic fibers such that the synthetic fibers are disposed adjacent to the cellulosic fibers; and forming the unitary fibrous structure from the synthetic fibers and the cellulosic fibers.
    Type: Grant
    Filed: December 18, 2003
    Date of Patent: May 9, 2006
    Assignee: The Procter & Gamble Company
    Inventors: Timothy Jude Lorenz, Osman Polat, Paul Dennis Trokhan, Dean Phan
  • Patent number: 7037407
    Abstract: A paper web is calendered by passing the paper web through a nip formed by a heatable thermo roll and a backing roll. The surface temperature of the thermo roll is above the glass transition range of the paper.
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: May 2, 2006
    Assignee: Metso Paper, Inc.
    Inventors: Pekka Koivukunnas, Kaj Fabritius
  • Patent number: 7037406
    Abstract: A method of embossing an absorbent web with a machine direction undulatory structure is described. The web has a plurality of ridges extending in its machine direction occurring at a frequency, F, across the web and the method includes providing the web to an embossing station where the web is embossed between a first and second embossing roll, each of which rolls may be provided with a plurality of embossing elements configured to define a plurality of embossing nips. At least a portion of the embossing nips are substantially oriented in a cross-machine direction with respect to the web and have a cross direction length, L. The product F×L is from about 0.1 to about 5.
    Type: Grant
    Filed: August 6, 2003
    Date of Patent: May 2, 2006
    Assignee: Fort James Corporation
    Inventors: Thomas N. Kershaw, Dale Gracyalny, Paul Ruthven, Galyn Schulz
  • Patent number: 7008510
    Abstract: An arrangement in tail threading in a multinip calender of a paper machine comprises rolls that form nips, extraction rolls as well as tail threading apparatus for guiding the tail to be transferred during tail threading through the multinip calender. The arrangement includes a holding point adapted prior to the last nip and a cutting device. The arrangement further includes a support device adapted at the holding point for supporting the tail during cutting.
    Type: Grant
    Filed: October 16, 2003
    Date of Patent: March 7, 2006
    Assignee: Metso Paper, Inc.
    Inventors: Ismo Kallio, Juha Laitio, Pekka Linnonmaa
  • Patent number: 7008506
    Abstract: The present invention is directed to a machine and process for producing a tissue web. The machine includes a forming area including at least one rotating continuous dewatering wire with zonally varied wire permeability, and at least one shoe press. The process includes dewatering the tissue web with at least the at least one continuous dewatering wire with zonally varied wire permeability, and pressing the tissue web in the at least one shoe press.
    Type: Grant
    Filed: January 26, 2001
    Date of Patent: March 7, 2006
    Assignee: Voith Paper Patent GmbH
    Inventors: Thomas Thoröe Scherb, Harald Schmidt-Hebbel
  • Patent number: 6998019
    Abstract: Provided is a process for preparing a smooth and glossy surfaced paper web. The process comprises subjecting the paper web to shear by using calender rolls driven at different speeds or calender rolls with different diameters. The resulting paper has a totally different structure than the original paper, as it has a much smaller void structure and a much higher degree of bonding between the elements of the sheet. The process is particularly applicable to improving the electrical insulation properties of an aramid paper web.
    Type: Grant
    Filed: September 9, 2003
    Date of Patent: February 14, 2006
    Assignee: FiberMark, Inc.
    Inventor: Homan B. Kinsley, Jr.