Extended Nip Press Patents (Class 162/358.3)
  • Patent number: 12060681
    Abstract: A seamed felt for use in a machine for producing a tissue web has a single-layer or multilayer base structure and at least one layer of non-woven fibers. The base structure has a textile structure with MD threads which form seam loops at the two front edges of the base structure. The fabric can be made endless by connecting its front edges by way of a seam. The seam can be formed by interlocking the seam loops of the two front edges and introducing a push-in element. The MD threads wholly or predominantly have a diameter between 0.25 mm and 0.45 mm, in particular between 0.3 mm and 0.35 mm, and the thread density of the MD threads is more than 37%, in particular between 37% and 45%. There is also described a corresponding machine and a method for producing a tissue web.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: August 13, 2024
    Assignee: Voith Patent GmbH
    Inventors: Susanne Klaschka, Robert Eberhardt, Hubert Walkenhaus
  • Patent number: 12043960
    Abstract: The invention relates to a clothing (10) for a machine to manufacture or refine a fibrous web, in particular a paper, cardboard, or tissue web, comprising a substrate (40) and a grid structure (20) applied on the substrate (40), on which the fibrous web is transported when the clothing (10) is used as intended, wherein the grid structure (20?) comprises a plurality of first elements (24?), all of which aligned in a first direction, and a plurality of second elements (26?), all of which aligned in a second direction, which is different from the first direction, wherein the first elements (24?) penetrate the second elements (26?), forming the grid structure (20?), such that an underside of the first elements (24?) facing the substrate (40) and an underside of the second elements (26?) facing the substrate (40) are located in a common plane. In addition, the present invention relates to a method for producing such a clothing.
    Type: Grant
    Filed: November 8, 2022
    Date of Patent: July 23, 2024
    Assignee: FIRST QUALITY TISSUE SE, LLC
    Inventors: Uwe Kockritz, Jens Kallenberg, Petra Hack-Ueberall, Gregory Allen Elliott, Thomas Anthony Hensler, James E. Sealy, II, Marc Paul Begin
  • Patent number: 11725344
    Abstract: A belt (10) for a sleeve roll forms a closed loop and has an inner surface (11), an outer surface (12), an elastic body (15), and a reinforcing structure (30). The reinforcing structure has first yarns (31a) arranged to a first direction (D1) of the belt, and second yarns (32a) arranged to a second direction (D2) of the belt which is parallel or substantially parallel to a travel direction of the belt, and/or perpendicular or substantially perpendicular to the first direction (D1). The belt (10) is configured to stretch elastically more in the second direction (D2) than in the first direction (D1) so that it will return to its original length after forces stretching the belt have been removed. This invention further relates to an arrangement including a belt and a sleeve roll. This invention further relates to a use of a belt.
    Type: Grant
    Filed: May 19, 2021
    Date of Patent: August 15, 2023
    Assignee: VALMET TECHNOLOGIES OY
    Inventors: Satu Hagfors, Vesa-Matti Riihioja
  • Patent number: 11505898
    Abstract: The invention relates to a clothing (10) for a machine to manufacture or refine a fibrous web, in particular a paper, cardboard, or tissue web, comprising a substrate (40) and a grid structure (20) applied on the substrate (40), on which the fibrous web is transported when the clothing (10) is used as intended, wherein the grid structure (20?) comprises a plurality of first elements (24?), all of which aligned in a first direction, and a plurality of second elements (26?), all of which aligned in a second direction, which is different from the first direction, wherein the first elements (24?) penetrate the second elements (26?), forming the grid structure (20?), such that an underside of the first elements (24?) facing the substrate (40) and an underside of the second elements (26?) facing the substrate (40) are located in a common plane. In addition, the present invention relates to a method for producing such a clothing.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: November 22, 2022
    Assignee: FIRST QUALITY TISSUE SE, LLC
    Inventors: Uwe Köckritz, Jens Kallenberg, Petra Hack-Ueberall, Gregory Allen Elliott, Thomas Anthony Hensler, James E. Sealy, II, Marc Paul Begin
  • Patent number: 10933616
    Abstract: A roll press method according to an embodiment comprises a roll gap measuring step for measuring a roll gap between an outer peripheral surface of the first roll and an outer peripheral surface of the second roll at one or more positions in a width direction of the first roll while rotating the first roll and the second roll and storing the measured roll gap and rotation angles of the first roll and the second roll in association with each other; and a roll press step for adjusting, according to the rotation angles, a position in the facing direction of the first roll by the adjustment mechanism such that the roll gap is kept within a predetermined variation range with respect to a target value and pressurizing the work by using the first roll in which positions are adjusted in accordance with the rotation angle and the second roll.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: March 2, 2021
    Assignee: SINTOKOGIO, LTD.
    Inventors: Shogo Nakajima, Makio Suzuki, Akiomi Uchiyama
  • Patent number: 10815619
    Abstract: The invention relates to a press belt for a shoe press. A press belt (5) is an endless loop made of elastomeric material and its outer surface (11) is provided with several grooves (13) to remove water. On the outer surface (11) of the press belt, there is at least one section where the depths (GD) of adjacent drain grooves, from the outer surface, change constantly. The invention also relates to an arrangement in a long nip and to a method of manufacturing a press belt.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: October 27, 2020
    Assignee: VALMET TECHNOLOGIES OY
    Inventors: Jari Jannetyinen, Petteri Halme, Jori Onnela
  • Patent number: 10168649
    Abstract: A fixing device includes a nip formation pad, an endless fixing rotator, a pressure rotator, and a lubricant transfer portion. The endless fixing rotator has an inner circumferential surface adhered with a lubricant. The pressure rotator is pressed against the nip formation pad via the fixing rotator to form a nip through which an image is fixed on a recording medium. The lubricant transfer portion transfers the lubricant toward a center side in a width direction perpendicular to a rotational direction of the fixing rotator.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: January 1, 2019
    Assignee: Ricoh Company, Ltd.
    Inventor: Tomoya Adachi
  • Patent number: 9506692
    Abstract: A method for dewatering a fibrous material web, wherein fibrous material is applied via a headbox on at least one wire and is subsequently dewatered in order to form a fibrous material web. Following the wire section, the resulting fibrous material web is dewatered by several presses, wherein the first press through which the fibrous material web is guided following the headbox is equipped with a double nip. The first press is formed by a wire roll and two couch rolls which are each pressed against the wire roll for forming a nip. Also disclosed is a corresponding device for carrying out the method.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: November 29, 2016
    Assignee: ANDRITZ AG
    Inventors: Franz Petschauer, Stefan Hansen, Klaus Poeschl
  • Patent number: 9181655
    Abstract: The invention relates to an extended nip roll (5) capable of forming a press nip (N) with a counter roll (7) which press nip (N) has an extension in a machine direction when the extended nip roll (5) cooperates with the counter roll (7). The extended nip roll (5) comprises a flexible jacket; an elastic press body (13) arranged inside the flexible jacket. The top side (14) of the press body (13) is beveled in such a way that, in the machine direction, a working surface (15) of the top side has a downstream end (16) which, in the machine direction, is followed by an exit side surface (17) that diverges from the interior surface (11) of the flexible jacket (10). The press body (13) further has at least a first and a second internal pressure chamber (18, 19). The pressure chambers (18, 19) can be pressurized such that the press body (13) expands.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: November 10, 2015
    Assignee: Valmet AB
    Inventors: Tord Gustavsson, Goeran Ekstroem, Jan Paulsson, Karl-Johan Tolfsson
  • Patent number: 9057157
    Abstract: The invention relates to an arrangement arranged to introduce a three-dimensional structure in a paper during production of said paper in a paper making machine (1). The arrangement comprises a heat roll (14) arranged to dry a wet paper web and an extended nip roll (12) arranged to form a transfer nip (TN) with said heat roll (14). The extended nip roll (12) is provided with a flexible jacket (17) arranged around the circumferential area of said extended nip roll (12). An external surface of said flexible jacket (17) is provided with a textured portion (15) and when the wet paper web passes the transfer nip between said extended nip roll (12) and said heat roll (14), said textured portion (15) of the external surface of the flexible jacket (17) will impart a three-dimensional texture to the paper web.
    Type: Grant
    Filed: November 8, 2014
    Date of Patent: June 16, 2015
    Assignee: Valmet AB
    Inventor: Tord Gustavsson
  • Patent number: 8986506
    Abstract: A shoe press belt, and a method for manufacturing and using it. The press belt comprises a base formed of heat-resistant elastomer, inside which base there is a support structure comprising a plurality of support yarns. At least some of the support yarns are heat-resistant polymer yarns, the polymer structure of the material of which comprises a naphthalene group.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: March 24, 2015
    Assignee: Valmet Technologies, Inc.
    Inventor: Vesa-Matti Riihioja
  • Publication number: 20150060001
    Abstract: The invention relates to an arrangement arranged to introduce a three-dimensional structure in a paper during production of said paper in a paper making machine (1). The arrangement comprises a heat roll (14) arranged to dry a wet paper web and an extended nip roll (12) arranged to form a transfer nip (TN) with said heat roll (14). The extended nip roll (12) is provided with a flexible jacket (17) arranged around the circumferential area of said extended nip roll (12). An external surface of said flexible jacket (17) is provided with a textured portion (15) and when the wet paper web passes the transfer nip between said extended nip roll (12) and said heat roll (14), said textured portion (15) of the external surface of the flexible jacket (17) will impart a three-dimensional texture to the paper web.
    Type: Application
    Filed: November 8, 2014
    Publication date: March 5, 2015
    Inventor: Tord Gustavsson
  • Publication number: 20150060000
    Abstract: The invention relates to an extended nip roll (5) capable of forming a press nip (N) with a counter roll (7) which press nip (N) has an extension in a machine direction when the extended nip roll (5) cooperates with the counter roll (7). The extended nip roll (5) comprises a flexible jacket; an elastic press body (13) arranged inside the flexible jacket. The top side (14) of the press body (13) is beveled in such a way that, in the machine direction, a working surface (15) of the top side has a downstream end (16) which, in the machine direction, is followed by an exit side surface (17) that diverges from the interior surface (11) of the flexible jacket (10).The press body (13) further has at least a first and a second internal pressure chamber (18, 19). The pressure chambers (18, 19) can be pressurized such that the press body (13) expands.
    Type: Application
    Filed: March 12, 2013
    Publication date: March 5, 2015
    Inventors: Tord Gustavsson, Göran Ekström, Jan Paulsson, Karl-Johan Tolfsson
  • Patent number: 8911594
    Abstract: The invention relates to an arrangement arranged to introduce a three-dimensional structure in a paper during production of said paper in a paper making machine (1). The arrangement comprises a heat roll (14) arranged to dry a wet paper web and an extended nip roll (12) arranged to form a transfer nip (TN) with said heat roll (14). The extended nip roll (12) is provided with a flexible jacket (17) arranged around the circumferential area of said extended nip roll (12). An external surface of said flexible jacket (17) is provided with a textured portion (15) and when the wet paper web passes the transfer nip between said extended nip roll (12) and said heat roll (14), said textured portion (15) of the external surface of the flexible jacket (17) will impart a three-dimensional texture to the paper web.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: December 16, 2014
    Assignee: Valmet AB
    Inventor: Tord Gustavsson
  • Publication number: 20140284012
    Abstract: The invention relates to an arrangement arranged to introduce a three-dimensional structure in a paper during production of said paper in a paper making machine (1). The arrangement comprises a heat roll (14) arranged to dry a wet paper web and an extended nip roll (12) arranged to form a transfer nip (TN) with said heat roll (14). The extended nip roll (12) is provided with a flexible jacket (17) arranged around the circumferential area of said extended nip roll (12). An external surface of said flexible jacket (17) is provided with a textured portion (15) and when the wet paper web passes the transfer nip between said extended nip roll (12) and said heat roll (14), said textured portion (15) of the external surface of the flexible jacket (17) will impart a three-dimensional texture to the paper web.
    Type: Application
    Filed: December 4, 2012
    Publication date: September 25, 2014
    Applicant: VALMET AB
    Inventor: Tord Gustavsson
  • Patent number: 8673118
    Abstract: The present invention relates to a press device (1) that comprises an extended nip roll (2) and a counter roll (3). The extended nip roll (2) has a flexible jacket (4) and a support body (5) inside the flexible jacket (4). The extended nip (2) roll also has internal means for causing the support body (5) to move or expand radially towards an inner surface (6) of the flexible jacket (4) to form a nip with the counter roll. The rolls (2, 3) have axial ends (7, 8, 10, 11) that are supported in bearing housings (9, 12). One or several actuators (13) such as hydraulic cylinders connects bearing housings (9, 12) to each other and the actuator or actuators (13) are arranged to act on the bearing housings (9, 12) to cause them to move to each other in a closing movement. A mechanical stop (14) which is separate from the rolls (2,3) is arranged to halt the closing movement. The invention also relates to a machine that uses the press device and to a method of operating the press device.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: March 18, 2014
    Assignee: Valmet Aktiebolag
    Inventors: Mats Görrel, Karl-Johan Tolfsson
  • Publication number: 20140000829
    Abstract: The present invention relates to a press device (1) that comprises an extended nip roll (2) and a counter roll (3). The extended nip roll (2) has a flexible jacket (4) and a support body (5) inside the flexible jacket (4). The extended nip (2) roll also has internal means for causing the support body (5) to move or expand radially towards an inner surface (6) of the flexible jacket (4) to form a nip with the counter roll. The rolls (2, 3) have axial ends (7, 8, 10, 11) that are supported in bearing housings (9, 12). One or several actuators (13) such as hydraulic cylinders connects bearing housings (9, 12) to each other and the actuator or actuators (13) are arranged to act on the bearing housings (9, 12) to cause them to move to each other in a closing movement. A mechanical stop (14) which is separate from the rolls (2,3) is arranged to halt the closing movement. The invention also relates to a machine that uses the press device and to a method of operating the press device.
    Type: Application
    Filed: February 16, 2012
    Publication date: January 2, 2014
    Applicant: METSO PAPER SWEDEN AB
    Inventors: Mats Görrel, Karl-Johan Tolfsson
  • 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: 8557085
    Abstract: In a papermaking machine, a dryer apparatus for drying a web. The dryer apparatus includes a drying cylinder and an upstream roll cooperating with a peripheral surface of the drying cylinder. A looped felt extends around the upstream roll and is guided by the upstream roll so that the looped felt and the peripheral surface of the drying cylinder define therebetween a nip for the passage therethrough of the web. The looped felt moves away from the peripheral surface of the drying cylinder downstream relative to the nip such that the web inherently follows and is supported by the peripheral surface of the drying cylinder downstream relative to the nip. A shoe press is disposed downstream relative to the nip, the shoe press including a looped press felt and a shoe which cooperates with the peripheral surface of the drying cylinder downstream relative to the nip.
    Type: Grant
    Filed: July 10, 2012
    Date of Patent: October 15, 2013
    Assignee: PMT Italia S.p.A.
    Inventor: Fabrizio Tonello
  • Patent number: 8414741
    Abstract: A tissue papermaking machine is described, comprising a wet section and a press section comprising a single press with first and second press elements forming a press nip, and with a press felt running through the press nip in contact with the formed fiber web, whereby the second press element is arranged inside the loop of the press and felt, and a smooth belt runs through the press nip in contact with the formed fiber web, whereby the first press element is arranged inside the loop of the belt, and a transfer roll arranged inside the loop of the belt forming a transfer nip with a drying surface, whereby the smooth belt carries the fiber web between the press nip and the transfer nip. A pre-dewatering device is arranged upstream of the press to dewater the fiber web to a dry content of 15-30%. Associated methods are also provided.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: April 9, 2013
    Assignee: Metso Paper Sweden AB
    Inventors: Ingvar Klerelid, Ola Thomasson
  • 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: 8377262
    Abstract: A structured papermaking fabric for making a bulky tissue web, including: a web facing side and an opposite side, the web facing side including a structure formed by interweaving of transverse yarns with longitudinal yarns, the structure including a plurality of pattern areas being regularly distributed on the web facing side and each of said pattern area being surrounded by an edge area, said pattern areas are woven in a plain weave and each of said edge areas including at least one longitudinal and at least one transverse edge segment, said longitudinal edge segment being formed by weaving of a longitudinal yarn over at least four, preferably at least five, consecutive transverse yarns, said transverse edge segment being formed by weaving of a transverse yarn over at least four consecutive longitudinal yarns.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: February 19, 2013
    Assignee: Voith Patent GmbH
    Inventor: Scott Quigley
  • Publication number: 20130020044
    Abstract: The invention relates to an arrangement in connection with the press section of a web-forming machine. The arrangement includes at least one press nip for dewatering the web manufactured on a web-forming machine. The arrangement also includes a smoothing press including a smoothing roll arranged after the press nip. The smoothing press includes smooth heat carrying devices arranged as a loop around at least two guide rolls. The smoothing roll is arranged into contact with the devices between two guide rolls. The smoothing roll and/or at least one of the guide rolls is a steam heated drying cylinder or a steam heated roll modified thereof. The invention also relates to a board or paper produced in such arrangement.
    Type: Application
    Filed: September 21, 2012
    Publication date: January 24, 2013
    Inventors: Pekka Kylliainen, Kari Raisanen
  • Patent number: 8349138
    Abstract: A process and apparatus for treating a pulp web (9) in a paper or board machine in a pressing unit (29) with one press roll (24) that has a rotating press shell (25) and one opposing roll (23), where the pulp web (9) is dewatered in an extended press nip (26) between the opposing roll (23) and the pressing shell (25) of the press roll (24). The pulp web (9) is carried on the rotating pressing shell (25) of the press roll (24) to a transfer zone (30), where the pulp web (9) is passed from the pressing shell (25) onto a transfer element (31, 27) after leaving the extended press nip (26).
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: January 8, 2013
    Assignee: Andritz AG
    Inventors: Wilhelm Mausser, Andreas Anzel, Harald Weigant, David V. Lange
  • Publication number: 20120291974
    Abstract: A method and system for producing fibrous material. Fibrous suspension is supplied onto a wire such that a web is formed and the formed web is dried. After the web formation, the web is kept at least partly in contact with the long wire continuously until the dry matter content of the web exceeds a predetermined limit value, at least to the press section. A system for producing fibrous material in a web forming machine includes fastening members for placing a wire in the machine such that the wire runs continuously from at least the web forming section substantially to the press section.
    Type: Application
    Filed: December 17, 2010
    Publication date: November 22, 2012
    Applicant: UPM-KYMMENE CORPORATION
    Inventor: Isko Kajanto
  • Patent number: 8236140
    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 including a first side being guided over a portion of the exterior surface of the roll. The permeable belt having a tension of at least approximately 30 kN/m. The first side of the belt having an open area of at least approximately 25% and a contact area of at least approximately 10%. A web travels between the permeable belt and the exterior surface of the roll.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: August 7, 2012
    Assignee: Voith Patent GmbH
    Inventors: Thomas Thoröe Scherb, Hubert Walkenhaus, Jeffrey Herman, Luiz Carlos Silva
  • Patent number: 8118980
    Abstract: The present invention relates to a loading device for a shoe press having a shoe press roll (1) and a mating roll (2) for forming a press nip, preferably in a dewatering device such as in a papermaking machine, through which press nip at least one paper web is guided for dewatering. The shoe press roll (1) has at least one press shoe (4) and at least one supporting device (5), and the press shoe (4) and the supporting device (5) are connected by a multiplicity of hydraulic devices, in order to load the press shoe (4). The invention is characterized in that the hydraulic device has at least one first guide element (7) for guiding a cylinder sleeve (8) substantially linearly, and the cylinder sleeve (8) engages at least in sections into at least one second guide element (9) which is connected to the press shoe (4) in a substantially stationary manner.
    Type: Grant
    Filed: January 29, 2008
    Date of Patent: February 21, 2012
    Assignees: Gapcon GmbH, Gebr. Bellmar GmbH Maschinenfabrik
    Inventor: Wolfgang Mark
  • Publication number: 20110303379
    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: Application
    Filed: June 17, 2011
    Publication date: December 15, 2011
    Inventors: Joao V. Boechat, Thomas Scherb, Luiz C. Silva, Rogerio Berardi, Daniela Reis
  • Patent number: 8070916
    Abstract: Method and device for producing a web of tissue. In the method, the web of tissue is led over at least one drying cylinder, doctored off the latter with a creping doctor and then wound up by way of a winding device. The web of tissue is supported at least largely over the entire distance between creping doctor and winding device on one side by a transfer device, so that there is only a short free web draw, while its other side is free. The device includes at least one drying cylinder, a creping doctor arranged on the drying cylinder and a winding device that winds up the web of tissue. Between the creping doctor and the winding device, a transfer device at least largely bridges the entire distance which supports the web of tissue on one side. There is a short free web draw, but its other side is left free.
    Type: Grant
    Filed: June 9, 2004
    Date of Patent: December 6, 2011
    Assignee: Voith Patent GmbH
    Inventors: Thomas Scherb, Luiz Carlos Silva
  • Patent number: 8062481
    Abstract: A support body for an apparatus having an extended nip formed between the support body and a counter-pressure member, having a working surface, being elastically deformable, and comprising a plurality of pressure chambers pressurized for controlled expanding in the direction of the working surface in order to load the nip. According to the invention the support body comprises a plurality of reinforcing profiles disposed in at least one chamber of the pressure chambers, the interiors of the profiles being in fluid communication with one another via holes, a wall of the profile facing said working surface including holes for communicating fluid between the interior of the profile and the chamber in which said profile is located, said profiles providing an inner support to walls defining said at least one chamber.
    Type: Grant
    Filed: April 16, 2007
    Date of Patent: November 22, 2011
    Assignee: Metso Paper Karlstad AB
    Inventor: Tord Gustav Gustavsson
  • Patent number: 8034216
    Abstract: The invention relates to a roll cover for treating a paper, cardboard, tissue or other fibrous web in a machine for manufacturing and/or converting them, comprising one or more plastic layers, of which at least one is of compressible configuration, and at least one carrier element in the form of a woven fabric, laid scrim or the like. Here, the loading of the support structure is intended to be reduced by at least one carrier element being embedded into a compressible plastic layer.
    Type: Grant
    Filed: November 8, 2006
    Date of Patent: October 11, 2011
    Assignee: Voith Patent GmbH
    Inventor: Uwe Matuschczyk
  • Patent number: 7976683
    Abstract: A machine for producing a fibrous web, in particular a paper web, paperboard web or tissue web, includes a former on which the fibrous web is formed on a structured belt and is dewatered between said structured belt and a forming belt, and a drying apparatus for the further dewatering of the fibrous web, through which the fibrous web is guided together with the structured belt and in which hot air flows through the permeable structured belt and the fibrous web. The forming fabric is formed by a printed forming fabric or a DSP fabric with zonally different permeability.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: July 12, 2011
    Assignee: Voith Patent GmbH
    Inventor: Thomas Scherb
  • Publication number: 20110139391
    Abstract: A transfer apparatus is disclosed for transferring a light weight web from a dewatering section to a Yankee dryer. The transfer apparatus includes a looped transfer blanket which is disposed between the dewatering section and the Yankee dryer for supporting and transporting the web from the dewatering section towards the Yankee dryer. The dewatering section includes a press which defines a press nip for the passage therethrough of the web. The press nip assists in dewatering the web and guides the web. A press felt extends through the press nip and the transfer blanket also extends through the press nip. A roll is disposed downstream relative to the press nip for transferring the web from the transfer blanket and for guiding the web towards the Yankee dryer.
    Type: Application
    Filed: December 10, 2009
    Publication date: June 16, 2011
    Inventors: James Albertus Anema, Laurie David Wicks
  • Publication number: 20110126999
    Abstract: Apparatus for producing a fibrous web that includes a smooth roll and at least one opposing element. The smooth roll and the at least one opposing element are arranged to form at least one press nip, a felt is structured and arranged to guide the fibrous web through the at least one press nip, and an embossing belt is structured and arranged to receive the fibrous web from the smooth roll. The smooth roll and the embossing belt are arranged such that the fibrous web passes in an unsupported manner over a free draw between said smooth roll and said embossing belt.
    Type: Application
    Filed: February 8, 2011
    Publication date: June 2, 2011
    Applicant: VOITH PATENT GMBH
    Inventors: Thomas THORÖE SCHERB, Luiz CARLOS DA SILVA
  • 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: 7951268
    Abstract: An apparatus for the production of a fibrous web, especially a tissue or hygienic web, the fibrous web runs through a press nip which is formed by a press unit and a backing roll and the web is subsequently run through a creping nip which is formed by the backing roll and a creping roll around which a textured belt is looped. Moreover, the creping roll is equipped with its own drive. The creping roll can be pressed against the backing roll through a pivoted lever whose pivoting axis which is parallel with the axes of the creping roll and is positioned such that the connecting line between the pivoting axis and the creping roll axis forms an angle of approximately 90° with the connecting line between the creping roll axis and the backing roll axis, when viewed in a vertical plane relative to these axes.
    Type: Grant
    Filed: July 25, 2008
    Date of Patent: May 31, 2011
    Assignee: Georgia-Pacific Consumer Products LP
    Inventors: Christian Schmid, Andreas Meschenmoser, Werner Leitenberger
  • Patent number: 7931777
    Abstract: A multi-layer web formation section has two successive wire units (300, 310) with a common wire (11). A first headbox (100) supplies fiber pulp to the first wire unit (300) forming a first partial web (W1). A second headbox (110) supplies a new fiber pulp layer to the forward end of the second wire unit (310) atop the first partial web. A first non-pulsating dewatering zone (Z1b) in the forward end of a two-wire stretch of the second wire unit (310) has a first formation shoe (200b) with a curved cap (201) placed on the side of the new layer having openings (202) extending through the cap (201) with an under-pressure (P) affecting therethrough. A two-wire stretch of the second wire unit (310) has a second pulsating dewatering zone (Z2b) formed by fixed dewatering lists (210b), between which there are gaps (220b) and an under-pressure (Pb) affecting in these.
    Type: Grant
    Filed: February 11, 2005
    Date of Patent: April 26, 2011
    Assignee: Metso Paper, Inc.
    Inventors: Kari Räisänen, Antti Poikolainen
  • Patent number: 7927462
    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: Grant
    Filed: December 23, 2004
    Date of Patent: April 19, 2011
    Assignee: Voith Patent GmbH
    Inventors: Thomas Thoröe Scherb, Hubert Walkenhaus, Jeffrey Herman, Luiz Carlos Silva
  • Patent number: 7905989
    Abstract: An apparatus for producing a fibrous web includes: a circulating permeable structured belt defining a sheet forming zone in which the fibrous web is formed; a circulating unstructured permeable supporting belt; a pressing section through which the fibrous web is led lying between the circulating permeable structured belt and the circulating unstructured permeable supporting belt; a Yankee cylinder having a surface and defining a press nip and a press nip region, wherein the fibrous web is led together with the structured belt through said press nip, the fibrous web in the region of the press nip being transferred from the structured belt to the surface of the Yankee cylinder; at least one doctor which doctors off the surface of the Yankee cylinder continuously; and a coating device which recoats the surface of the Yankee cylinder so that a renewed coating material is always present in the press nip.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: March 15, 2011
    Assignee: Voith Patent GmbH
    Inventors: Thomas Scherb, Luiz Carlos Silva, Danilo Oyakawa, Rogerio Berardi
  • Patent number: 7887675
    Abstract: Press for a fiber web supported by a clothing, said press having first and second press elements that interact with each other in order to form an extended nip in a press zone for the clothing-supported fiber web, said first press element having: —a support; —a press body, being supported by the support; —an endless, flexible belt, sliding over and forming a closed loop around the press body; and —a support element, being placed inside the loop for supporting the belt, said clothing surrounding together with the belt between a first position and a second position along the loop, wherein at least the first position is located outside the press zone. According to the invention, the support element is located in the first position. The invention also relates to a method in, and a press element for such a press.
    Type: Grant
    Filed: May 20, 2005
    Date of Patent: February 15, 2011
    Assignee: Metso Paper, Inc.
    Inventors: Joakim Norrman, Tord Gustavsson
  • Patent number: 7887674
    Abstract: A support body for an apparatus having an extended nip that is defined by a contact surface of the support body and an opposed surface, the support body having two side surfaces facing from each other and connecting to the contact surface, and a bottom surface facing from the contact surface, the support body being arranged to be moved towards the opposite surface by means of a loading system in order to load the nip via the contact surface. The support body is elastically deformable and has its contact surface adaptable to the opposite surface in interaction therewith. A method of forming an extended nip in an apparatus includes loading the support body by means of a loading system, and a method of controlling the load in the extended nip includes designing the support body with at least two layers with different elasticity providing a corresponding load profile.
    Type: Grant
    Filed: September 9, 2009
    Date of Patent: February 15, 2011
    Assignee: Metso Paper Karlstad AB
    Inventor: Tord Gustav Gustavsson
  • Patent number: 7850825
    Abstract: An apparatus for producing a fibrous web, in particular a tissue web, with a press zone through which the fibrous web is passed in a lying position between a circulating permeable structured belt and a circulating permeable non-structured supporting belt. A press nip is provided on a Yankee Cylinder through which the fibrous web is passed in the lying position together with the structured belt between the structured belt and the Yankee cylinder, whereby the press zone is limited on the side adjacent the supporting belt by a substantially smooth surface, and whereby the supporting belt is not brought together with the fibrous web and the structured belt until proximate to the press zone.
    Type: Grant
    Filed: May 16, 2008
    Date of Patent: December 14, 2010
    Assignee: Voith Patent GmbH
    Inventors: Thomas Scherb, Luiz Carlos Silva, Rogerio Berardi, Danilo Oyakawa
  • Publication number: 20100300635
    Abstract: A process and apparatus for treating a pulp web (9) in a paper or board machine in a pressing unit (29) with one press roll (24) that has a rotating press shell (25) and one opposing roll (23), where the pulp web (9) is dewatered in an extended press nip (26) between the opposing roll (23) and the pressing shell (25) of the press roll (24). The pulp web (9) is carried on the rotating pressing shell (25) of the press roll (24) to a transfer zone (30), where the pulp web (9) is passed from the pressing shell (25) onto a transfer element (31, 27) after leaving the extended press nip (26).
    Type: Application
    Filed: May 18, 2010
    Publication date: December 2, 2010
    Inventors: Wilhelm Mausser, Andreas Anzel, Harald Weigant, David V. Lange
  • Patent number: 7842166
    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: Grant
    Filed: April 22, 2008
    Date of Patent: November 30, 2010
    Assignee: Voith Patent GmbH
    Inventors: Jeffrey Herman, Thomas Thoroee Scherb, Luiz Carlos Silva, Hubert Walkenhaus
  • Publication number: 20100294449
    Abstract: An apparatus suitable for use with a web substrate embossing system is disclosed. The apparatus comprises at least two rolls juxtaposed in an axially parallel relationship and a continuous belt capable of providing a compressive force to a corresponding embossing surface. The continuous belt is disposed about the at least two rolls. The at least two rolls and continuous belt have an axis generally corresponding to the corresponding embossing surface. A first surface of the continuous belt is capable of being disposed proximate to at least a portion of the corresponding embossing surface and forming an elongate nip therebetween.
    Type: Application
    Filed: March 22, 2010
    Publication date: November 25, 2010
    Inventor: Kevin Benson McNeil
  • Publication number: 20100269997
    Abstract: Apparatus for washing and dewatering pulp including a pair of rotatable press rolls with a permeable outer surface in a casing including a vat in which the press rolls are installed is provided. A gap is provided between the vat and the press rolls as well as means for feeding the pulp into the gap between the rolls and the vat includes a first segment partially enclosing the first roll and a second segment partially enclosing the second roll, and casing members for each segment are pivotable about axes of rotation to open and close the casing, and the distance between the axes of rotation is less than the sum of the outer diameter of the two press rolls.
    Type: Application
    Filed: December 11, 2008
    Publication date: October 28, 2010
    Applicant: METSO PAPER, INC.
    Inventors: Johan Bylander, Fredrik Pontén, Jörgen Lundberg
  • Patent number: 7811419
    Abstract: A press apparatus (10) is disclosed for removing water from a web (W). The apparatus includes a rotatable roll (12) which defines a peripheral surface (14). An elongate shoe (16) has a curved surface (18) which cooperates with the peripheral surface (14) of the roll (12) for defining therebetween a nip (N) for the passage therethrough of the web (W). The arrangement is such that when the web (W) extends through the nip (N), water is pressed from the web (W). A blanket (20) is disposed between the curved surface (18) of the shoe (16) and the web (W) for supporting the web (W) during the passage of the web through the nip (N), the blanket (20) enclosing the shoe (16). Moreover, the blanket (20) has a diameter within a range 500 mm to 875 mm.
    Type: Grant
    Filed: March 31, 2003
    Date of Patent: October 12, 2010
    Assignee: PMT Italia
    Inventor: Fabrizio Tonello
  • Publication number: 20100243190
    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 including a first side being guided over a portion of the exterior surface of the roll. The permeable belt having a tension of at least approximately 30 kN/m. The first side of the belt having an open area of at least approximately 25% and a contact area of at least approximately 10%. A web travels between the permeable belt and the exterior surface of the roll.
    Type: Application
    Filed: March 25, 2010
    Publication date: September 30, 2010
    Inventors: Thomas Thoröe Scherb, Hubert Walkenhaus, Jeffrey Herman, Luiz Carlos Silva
  • Publication number: 20100230060
    Abstract: A papermaking machine for making uncreped through air dried paper having a forming section, a press section, and a drying section is disclosed. The paper web is pressed between two press members while enclosed between a press felt and a transfer belt having non-uniformly distributed microscopic depressions in its surface. The web follows the transfer belt from the press to a transfer point at which the web is transferred via a suction transfer device onto a structuring fabric. The web is then dried with a through air dryer.
    Type: Application
    Filed: May 4, 2009
    Publication date: September 16, 2010
    Inventor: Robert Stanley Ampulski
  • Patent number: 7776185
    Abstract: The invention relates to a machine for producing and/or further processing a fibrous web, said machine comprising a press part and a drying part. The press part comprises only one press nip, and the first or second drying group of the dry part comprises an air-flow drying unit.
    Type: Grant
    Filed: August 4, 2005
    Date of Patent: August 17, 2010
    Assignee: Voith Patent GmbH
    Inventor: Thomas Elenz