Impermeable Belts For Extended Nip Press Patents (Class 162/901)
  • 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
  • Patent number: 8980062
    Abstract: An industrial fabric, belt or sleeve and a method of making the fabric, belt or sleeve are disclosed. The industrial fabric, belt or sleeve is produced by spirally winding strips of polymeric material, such as an industrial strapping or ribbon material, around two rolls in a side-to-side manner in which a gap between adjacent edges is formed. A second material, for example a gap filler material, is placed between the adjacent edges, and the adjoining edges are joined by melting the filler material, strips of polymeric material, or both. The gap filler material can have a specific cross-sectional shape corresponding to the gap.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: March 17, 2015
    Assignee: Albany International Corp.
    Inventors: Jonas Karlsson, Anders Nilsson, Mikael Danielsson, Marcus Backstrom
  • Patent number: 8764943
    Abstract: An industrial fabric, belt or sleeve and a method of making the fabric, belt or sleeve are disclosed. The industrial fabric, belt or sleeve is produced by spirally winding strips of polymeric material, such as an industrial strapping or ribbon material, and joining the adjoining sides of the strips of material using ultrasonic welding or laser welding techniques. The fabric, belt or sleeve may then be perforated using a suitable technique to make it permeable to air and/or water.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: July 1, 2014
    Assignee: Albany International Corp.
    Inventors: Dana Eagles, Robert Hansen, Jonas Karlsson
  • Patent number: 8568567
    Abstract: The invention relates to a shoe press belt comprising polyurethane polymer prepared of a urethane prepolymer containing isocyanate groups and a chain extender, the urethane prepolymer being prepared using 1,4-phenylene-diisocyanate (PPDI) and the chain extender comprising methyl-bis(3-chloro-2,6-diethylaniline) (MCDEA).
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: October 29, 2013
    Assignee: Metso Fabrics Inc.
    Inventors: Satu Hagfors, Vesa-Matti Riihioja, Marja Ojanen
  • Patent number: 8500958
    Abstract: The invention relates to a transport or processing belt for a machine for the production or treatment of a fiber web, particularly a paper, cardboard or tissue machine, having a paper side and a conveying side and comprising a polymer coating and a textile load-bearing fabric, wherein the textile fabric has a first side facing the paper side and a second side facing the conveying side. The textile fabric is permeable with a permeability of at least 300 cfm, preferably of at least 500 cfm, and the polymer coating extends in one piece from the first side of the textile fabric though the openings of the textile fabric to the second side of the textile fabric.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: August 6, 2013
    Assignee: Voith Patent GmbH
    Inventors: John Jeffrey, Michael Spence, Andrew Allum, Paul Rydin
  • 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: 8394239
    Abstract: An industrial fabric, belt or sleeve and a method of making the fabric, belt or sleeve are disclosed. The industrial fabric, belt or sleeve is produced by spirally winding strips of polymeric material, such as an industrial strapping or ribbon material, and joining the adjoining sides of the strips of material using ultrasonic welding or laser welding techniques. The fabric, belt or sleeve may then be perforated using a suitable technique to make it permeable to air and/or water.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: March 12, 2013
    Assignee: Albany International Corp.
    Inventors: Dana Eagles, Jonas Karlsson, Bruce Stowe, Joseph Botelho, Sabri Mourad, Jerry O'Connor, Jon Montcrieff, Robert Hansen
  • 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
  • Patent number: 8303776
    Abstract: The invention relates to a shoe press belt comprising an elastomer polymer having nanoparticles attached therewith through covalent bonds.
    Type: Grant
    Filed: July 3, 2008
    Date of Patent: November 6, 2012
    Assignee: Tamfelt PMC Oy
    Inventor: Ville Lahdensuo
  • Patent number: 8282782
    Abstract: A wet paper web transfer belt (1) has a wet paper web-side layer (31) including a resin and a hydrophilic fibrous body (30) and a machine-side layer (32). A basic fabric (33) disposed in the belt comprises a first woven fabric (34) disposed on a wet paper web (W) side and a second woven fabric (35) disposed on a press roll (10) side. The first woven fabric (34) and the second woven fabric (35) are stacked together. At least a portion of the hydrophilic fibrous body (30) is exposed on a surface (37) of the wet paper web-side layer (31). The basis weight of the first woven fabric (34) is greater than the basis weight of the second woven fabric (35). The structure is effective to improve a first function to cause the wet paper web (W) to stick thereon and to transfer the wet paper web (W), and a second function to allow the wet paper web (W) to be smoothly released from the belt for transferring the wet paper web (W) to a next process.
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: October 9, 2012
    Assignee: Ichikawa Co., Ltd.
    Inventors: Takeshi Sawada, Kenji Inoue
  • Patent number: 8282784
    Abstract: Provided is a paper-making machine belt (or a paper-making shoe-press belt), which is excellent in a wet-web water-squeezing property, which is stable in a paper quality (e.g., wet-web smoothness or marking property), and which has little damage (e.g., cracking or wear) of the outer circumference of the belt being used. The paper-making shoe-press belt carries a felt for accepting the squeezed water from the wet-web and has draining grooves extended in the felt-side surface. The paper-making shoe-press belt is characterized in that the draining grooves extended in the felt-side surface have at least two kinds of different groove shapes in the transverse direction (or the CMD direction) of the paper-making machine. The groove shape enables the grooves of two continuous and discontinuous kinds to share the functions thereby to satisfy the improvements in the drainage and in the paper quality and the wet-web surface smoothness at the same time.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: October 9, 2012
    Assignee: Ichikawa Co., Ltd.
    Inventors: Satoshi Takano, Hiroyuki Takamura
  • Patent number: 8192583
    Abstract: A process belt for papermaking with a long operational life including an integrated structure of a reinforcing fibrous base material and a polyurethane layer is disclosed. The reinforcing fibrous base material is embedded in the polyurethane and the outer peripheral surface and the inner peripheral surface are made of the polyurethane. Nanoparticles including, as a main component, a silicon oxide component, the surface of which is treated with an organic silane coupling agent, are homogeneously dispersed in one part or all of the polyurethane.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: June 5, 2012
    Assignee: Ichikawa Co., Ltd.
    Inventors: Takao Yazaki, Atsushi Ishino, Kenji Inoue, Ai Tamura
  • Patent number: 8192585
    Abstract: A press belt 20 includes a multiplicity of drain grooves 21 extending along a belt travel direction, lands 22 located between adjacent drain grooves 21, and auxiliary grooves 23 located on the lands 22 and extending along the belt travel direction. A transverse sectional area of each auxiliary groove 23 is smaller than that of each drain groove 21.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: June 5, 2012
    Assignee: Yamauchi Corporation
    Inventors: Keiji Nakagawa, Tetsuya Murakami
  • Patent number: 8192584
    Abstract: A papermaking belt 10 includes: a base material layer 11 including longitudinal and lateral yarns; a back-surface-side resin layer 12 which is provided on a back surface side of the base material layer, and at least a part of which has impregnated into the base material layer from the back surface side of the base material layer; a first resin layer 13 which has a relatively low viscosity, and has impregnated into the base material layer 11 from a front surface side of the base material layer 11; and a second resin layer 14 which contains chopped fibers 15 in a dispersed state, has a higher viscosity than that of the first resin layer 13, and is provided on a front surface side of the first resin layer 13.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: June 5, 2012
    Assignee: Yamauchi Corporation
    Inventor: Tetsuya Murakami
  • Patent number: 8137507
    Abstract: A shoe press belt for paper-making machine that reduces belt damages attributed to the friction between belt and shoe. The shoe press belt for paper-making machine having a wet paper contact surface and a shoe contact surface, is characterized in that the shoe press belt for paper-making machine has a base member and at least a polymer elastic part constituting the shoe contact surface and that the shoe contact surface of the polymer elastic part has a surface roughness (Ra) of 1.0 to 3.5 ?m.
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: March 20, 2012
    Assignee: Ichikawa Co., Ltd.
    Inventors: Atsushi Ishino, Nobuharu Suzuki, Shintaro Yamazaki, Takeshi Sawada, Tomoyuki Kawamata
  • Patent number: 8092654
    Abstract: A process belt for papermaking with a long operational life comprises an integrated structure of a reinforcing fibrous base material 6 and a polyurethane layer, the reinforcing fibrous base material being embedded in the polyurethane, wherein an inorganic filler selected from calcined kaolin clay, fused silica and zeolite is homogeneously dispersed in the polyurethane.
    Type: Grant
    Filed: November 26, 2010
    Date of Patent: January 10, 2012
    Assignee: Ichikawa Co., Ltd.
    Inventors: Takao Yazaki, Atsushi Ishino, Kenji Inoue, Ai Tamura
  • Patent number: 8083899
    Abstract: A belt (4) for a shoe press is disposed for rotational movement between a press roll (2) and a shoe (3). The belt (4) includes a shoe-side layer (21), a base layer (22) disposed on an outer circumferential surface of the shoe-side layer (21), and a wet paper web-side layer (25) disposed on an outer circumferential surface of the base layer (22). The base layer (22) has a pair of reinforcing bases (11). The reinforcing layers (11) are disposed circumferentially in a warpwise direction in given regions (E1) corresponding respectively to shoe edges (10) on the opposite sides in a widthwise direction of the shoe (3). The rigidity of belt portions of shoe edge abutment regions (E1) on opposite sides in the widthwise direction of the shoe (3) is partially increased to increase bending stresses and crack resistance of the belt.
    Type: Grant
    Filed: June 4, 2007
    Date of Patent: December 27, 2011
    Assignee: Ichikawa Co., Ltd.
    Inventor: Tomoyuki Kawamata
  • Patent number: 8080137
    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: May 27, 2008
    Date of Patent: December 20, 2011
    Assignee: Albany International Corp.
    Inventors: Keith Fitzpatrick, Bo-Christer Aberg, Michael G. Moriarty, Paul Turner
  • Patent number: 8012055
    Abstract: The invention relates to a press belt (1) made from an elastomer material and forming a closed loop, the belt having an inner surface (2) and an outer surface (3) and three layers of reinforcement yarns (7?, 5?, 6?) arranged inside the elastomer material. In the invention, an outermost yarn layer (7) is formed by longitudinal and transversely adjacent reinforcement yarns (7?) of the press belt (1), which absorb energy and are restored from deformation with delay in connection with deformation.
    Type: Grant
    Filed: February 2, 2005
    Date of Patent: September 6, 2011
    Assignee: Tamfelt PMC Oy
    Inventors: Satu Hagfors, Olli Jermo, Marita A. Leppimaki, legal representative
  • Patent number: 7955475
    Abstract: A papermaking shoe press belt is formed of a reinforcing fiber base material and a polyurethane layer integrated with each other. The reinforcing fiber base material is embedded in the polyurethane layer. The papermaking shoe press belt includes, as the polyurethane layer, a polyurethane layer obtainable by curing a composition composed in combination of a urethane prepolymer and one or more curing agent. The urethane prepolymer is obtainable by reacting a p-phenylene diisocyanate compound with a long-chain polyol.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: June 7, 2011
    Assignee: Ichikawa Co., Ltd.
    Inventors: Takao Yazaki, Shintaro Yamazaki, Yuya Takamori
  • 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: 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: 7947154
    Abstract: A belt for papermaking shoe press is provided which comprises a reinforcing fibrous base (6) and a polyurethane layer (2) united therewith, the reinforcing fibrous base (6) having been embedded in the polyurethane layer (2). The belt includes a polyurethane layer obtained by curing a mixture comprising: a urethane prepolymer obtained by reacting a polyisocyanate compound selected among p-phenylene-diisocyanate, 4,4?-methylene-bis(phenyl isocyanate), and tolylene-diisocyanate with a polyol compound selected among polypropylene glycol, polytetramethylene glycol, and a polycarbonate diol; a hardener selected among an aliphatic diol compound, hydroquinone-bis-?-hydroxyethyl ether, and organic polyamine compound; and an aliphatic triol compound. Due to this layer, the shoe press belt for papermaking is excellent in wearing resistance and flexing fatigue resistance.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: May 24, 2011
    Assignee: Ichikawa Co., Ltd.
    Inventors: Takao Yazaki, Nobuharu Suzuki, Shintaro Yamazaki, Atsushi Ishino, Yuya Takamori, Ryo Umehara, Ai Tamura
  • Patent number: 7931780
    Abstract: A wet paper web transfer belt comprises a base body 30, a paper side layer 20, and a machine side layer 23. The paper side layer 20 is composed of a paper contacting side batt layer 21 made of hydrophilic fibers 41 and a base bode side batt layer 22 without the hydrophilic fibers 41, at least the paper contacting side batt layer 21 being impregnated with a high molecular weight elastic body 50 and at least a part of the hydrophilic fibers 41 being exposed on the surface of the paper contacting side batt layer 21. The water contained in the wet paper web remains within the paper contacting side batt layer 21 made of the hydrophilic fibers 41 with only a small amount of water moving into the base body side batt layer 22, thereby reducing dimensional changes of the belt.
    Type: Grant
    Filed: October 2, 2006
    Date of Patent: April 26, 2011
    Assignee: Ichikawa Co. Ltd.
    Inventor: Kenji Inoue
  • 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: 7922869
    Abstract: A shoe press belt for a paper machine includes a substrate and a polyurethane resin impregnated to laminate on the surfaces of both the shoe side and the felt side thereof, and is excellent in abrasion resistance, crack resistance and processability. A polyurethane resin is produced by using a combination of two kinds of diisocyanates, that is, tolylene diisocyanate (TDI) and diphenylmethane diisocyanate (MDI) as starting materials.
    Type: Grant
    Filed: September 27, 2006
    Date of Patent: April 12, 2011
    Assignee: Ichikawa Co., Ltd.
    Inventor: Atsushi Ishino
  • Patent number: 7918971
    Abstract: A belt (shoe press belt) for a paper making machine, which has good ability of squeezing water from moist paper and which, during use, has reduced damage (cracks and wear) on the outer peripheral surface of the belt. The shoe press belt for making paper carries felt for receiving water squeezed from moist paper. A water discharge groove extended on the surface on the felt side is formed as an intermittent groove, and the width and depth of the water discharge groove are continuously varied in the direction of travel (MD direction) of the groove. The shape of the intermittent groove can be asymmetrical or symmetrical at the left and right with respect to the width, or can be formed to have a narrow width at the center of the groove, or can be formed so that the groove is deep at the center. Because the water discharge groove is intermittent, water discharge ability, the quality of paper, and the smoothness of the surface of moist paper are enhanced at the same time.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: April 5, 2011
    Assignee: Ichikawa Co., Ltd,
    Inventor: Satoshi Takano
  • Patent number: 7909965
    Abstract: Disclosed is a shoe press belt (10) which comprises a reinforcing fibrous base material (6) embedded in a polyurethane layer, and has an outer circumference layer (2a) and an inner circumference layer (2b) each formed with a polyurethane. The polyurethane layer constituting the outer circumference layer (2a) comprises a polyurethane which is cured by the reaction of an urethane prepolymer (A) with a curing agent mixture (B). The urethane prepolymer (A) is produced by reacting an isocyanate compound selected from p-phenylene-diisocyanate and 4,4?-methylenebis(phenylisocyanate) with a polytetramethylene glycol and has an isocyanate group at its terminal. The curing agent mixture (B) comprises 1,4-butanediol and an aromatic polyamine having an active hydrogen group (H). The shoe press belt has excellent wear resistance, cracking resistance and bending fatigue resistance.
    Type: Grant
    Filed: May 14, 2008
    Date of Patent: March 22, 2011
    Assignee: Ichikawa Co., Ltd.
    Inventors: Takao Yazaki, Nobuharu Suzuki, Shintaro Yamazaki, Atsushi Ishino
  • 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
  • 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
  • Patent number: 7811627
    Abstract: A papermaking fabric is treated by applying a nanoparticle type coating to improve their resistance to contamination by foreign matter in the papermaking system. The coating is applied during fabric manufacture and cured during heat setting. Alternatively, the coating applied or renewed by utilizing an existing shower or locating a spray boom or other suitable coating application device in the dryer section to apply the coating to the fabric in a controlled, uniform manner. Prior to application of the coating, the fabric is first thoroughly cleaned such as by showering or spraying, and then dried. Following controlled application of the coating, any excess material is removed by a suitable means, such as by vacuum, and the remaining coating on the fabric is then cured, either by utilizing the ambient heat of the dryer section or by a portable bank of heaters. In this manner, the fabric does not have to be removed from the machine in order to apply or renew the contaminant resistant coating.
    Type: Grant
    Filed: March 9, 2006
    Date of Patent: October 12, 2010
    Assignee: AstenJohnson, Inc.
    Inventors: Samuel M. Baker, Rex Barrett, Bud J. Chase, Bruce W. Janda, Ian Gerald Lang, Dietmar Wirtz, Larry Anderson
  • Patent number: 7776187
    Abstract: An industrial belt having a non-linear seam adapted to be on-machine joinable. In a particular embodiment, the seam is made up of a opposite end regions of the belt having complementary projections, such as in the form of castellations, which engage at the seam, providing a completely integrated belt throughout the zone of the seam. In the field of papermaking, the belt of the invention can take the form of a transfer belt, whereby the invention provides a fully interlocking, strong seam which minimizes any potential mechanical or hydraulic sheet marking. The invention also includes a method of creating the end regions of the belt, seaming the belt, and casting the belt.
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: August 17, 2010
    Assignee: Voith Patent GmbH
    Inventors: Michael Spence, Paul Riding, John Jeffrey
  • Patent number: 7776186
    Abstract: A transport belt, in particular for machines for the production of web material such as paper or paperboard, having a printed material at least in some regions on a web material contact side.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: August 17, 2010
    Assignee: Voith Patent GmbH
    Inventors: Arved H. Westerkamp, Matthias Schmitt
  • Patent number: 7776188
    Abstract: A transport belt for a machine for producing a fiber material web, in particular paper or paperboard, has, on a web material side, a web material contact surface and, on a machine side, a machine contact surface, wherein a multiplicity of depressions are provided in the transport belt on the machine side.
    Type: Grant
    Filed: May 16, 2007
    Date of Patent: August 17, 2010
    Assignee: Voith Patent GmbH
    Inventors: Antony Morton, Daniel Gronych, Michael Straub
  • Patent number: 7736468
    Abstract: The present invention relates to a urethane-based coating having nanoparticles for improving the characteristics of a papermaking process belt, roll cover and belts used in textile applications. For example, the present invention improves resistance to flex fatigue, crack propagation, groove closure and wear characteristics of urethane coatings on such belts and roll coverings. The present invention also improves the resistance to water and oil permeation characteristics of urethane coated belts and roll coverings.
    Type: Grant
    Filed: July 20, 2007
    Date of Patent: June 15, 2010
    Assignee: Albany International Corp.
    Inventors: Cheng-Kuang Li, Crayton Gregory Toney
  • Patent number: 7722741
    Abstract: This invention relates to a machine for the production of a paper web, paperboard web or tissue web, having a roller with a circumferential surface and having an endless belt, in particular a transfer belt, which is wrapped around the circumferential surface of the roller in sections and has a bottom side which in the wrap zone can be brought into contact with the circumferential surface, as the result of which the endless belt and/or the roller provide a storage capacity suitable for accommodating at least in part the fluid which gets into the wrap zone between the bottom side and the circumferential surface.
    Type: Grant
    Filed: August 18, 2006
    Date of Patent: May 25, 2010
    Assignee: Voith Patent GmbH
    Inventors: Daniel Gronych, Robert Koplin, Klaus Hermann, Georg Kleiser, Arved H. Westerkamp
  • Patent number: 7704350
    Abstract: A press belt (2) comprises both-end corresponding regions B positioned so as to correspond to both ends of a press roll (1) or a press shoe (3) in a width direction and having a small thickness and a center region A positioned between the both-end corresponding regions B and having a thickness larger than that of the both-end corresponding region B.
    Type: Grant
    Filed: September 1, 2004
    Date of Patent: April 27, 2010
    Assignee: Yamauchi Corporation
    Inventors: Takahisa Hikita, Atsuo Watanabe
  • Patent number: 7691237
    Abstract: This invention relates to a belt for transferring an in-production fibrous web, in particular a paper web or paperboard web, in a machine area of a machine producing the fibrous web, in particular a paper machine or paperboard machine, including at least one textile substrate and a coating, which is applied to the substrate and touches the in-production fibrous web, for obtaining a partial or complete impermeability of the belt. The inventive belt has at least one continuously differencing characteristic in at least one region across its overall width. Also, this invention relates to a machine, in particular a paper machine or paperboard machine, for producing a fibrous web, in particular a paper web or paperboard web, as well as to a use of a belt for transferring an in-production fibrous web, in particular a paper web or paperboard web, in one machine area or between two machine areas of a machine producing the fibrous web, in particular a paper machine or paperboard machine.
    Type: Grant
    Filed: September 27, 2006
    Date of Patent: April 6, 2010
    Assignee: Voith Paper GmbH
    Inventor: Arved Westerkamp
  • Patent number: 7674356
    Abstract: A paper machine belt that includes at least one layer having parallel yarns. Additionally, a ratio of a volume of the parallel yarns in the at least one layer to a void volume in the at least layer is greater than 1:1.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: March 9, 2010
    Assignee: Voith Fabrics Patent GmbH
    Inventors: Kjell Anders Karlsson, Vaeinoe Per-Ola Lidar
  • Patent number: 7651588
    Abstract: A dewatering and thickening belt having an endless fabric woven with synthetic resin filaments, a bending-resistant element and a guide protrusion, wherein the guide protrusion is fusion-bonded to a bending-resistant portion to which the bending-resistant element has been attached so that the outer end portion of the guide protrusion is located inside the end portion of the fabric. The inner end portion of the guide protrusion is located 20 to 50 mm outside the inner end portion of the bending-resistant element.
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: January 26, 2010
    Assignee: Nippon Filcon Co., Ltd.
    Inventors: Tatsutoshi Nakajima, Yoshihisa Kondou
  • Patent number: 7638018
    Abstract: A covering for a machine for the production of a fibrous web has, at least in some sections, a two-dimensional structure which is formed by a multiplicity of polymer-based regions which differ from each other at least in part by virtue of a different fraction of filler material and/or by virtue of a different type of filler material.
    Type: Grant
    Filed: September 26, 2006
    Date of Patent: December 29, 2009
    Assignee: Voith Patent GmbH
    Inventors: Arved H. Westerkamp, John Jeffery, Antony Morton
  • Patent number: 7611608
    Abstract: A press belt having superior cracking resistance, wear resistance and pressure deflection resistance and an excellent traveling property and a method of manufacturing the same as well as a shoe press employing the same are provided. A press belt in a press comprising a rotatively traveling endless press belt and pressing means, including terminal corresponding areas (B, B?) corresponding to both ends of the pressing means in the cross direction and a central area (A) located between the terminal corresponding areas and mainly composed of thermosetting polyurethane obtained from a thermosetting polyurethane material containing a phenylene isocyanate derivative having an isocyanate group (NCO) on an end and a hardener having an active hydrogen group (H) on an end with the equivalent ratio (H/NCO) between the active hydrogen group and the isocyanate group set relatively high on the terminal corresponding areas and relatively low on the central area and a method of manufacturing the same.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: November 3, 2009
    Assignee: Yamauchi Corporation
    Inventor: Takahisa Hikida
  • Patent number: 7540942
    Abstract: A press belt (2) comprises many drain grooves (13) extending along a belt travel direction, and many lands (14) positioned between the adjacent drain grooves and extending along the belt travel direction. The land (14) has an upper surface which is entirely curved upward as a transverse sectional configuration along a belt width direction.
    Type: Grant
    Filed: September 13, 2004
    Date of Patent: June 2, 2009
    Assignee: Yamauchi Corporation
    Inventor: Takahisa Hikita
  • Patent number: 7527709
    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 has a paper web facing side and is guided over a support surface. The permeable belt can have a tension of between approximately 20 kN/m and approximately 100 KN/m, a permeability value of between approximately 100 cfm and approximately 1200 cfm, a surface contact area of the paper web side that being between approximately 0.5% and approximately 90% when not under tension, and an open area of between approximately 1.0% and approximately 85%. 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: March 14, 2006
    Date of Patent: May 5, 2009
    Assignee: Voith Paper Patent GmbH
    Inventors: Ademar Lippi Alves Fernandes, Martin Ringer, Carl Warren, Blake Hender, Daniel Sharkey, Thomas Thoroee Scherb
  • Patent number: 7501044
    Abstract: A paper making elastic belt has a drainage channels in a surface. A surface roughness of a wall of the drainage channel is not more than 2.0 ?m in arithmetic average roughness (Ra).
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: March 10, 2009
    Assignee: Yamauchi Corporation
    Inventors: Takahisa Hikida, Keiji Nakagawa, Hiroyuki Yasukawa
  • Patent number: 7494571
    Abstract: A belt for a shoe-press of a paper machine having water drain grooves which are resistant to the occurrence of cracks in side walls of the water drain grooves. The surface condition of the water drain grooves side wall is arranged to be a pear-skin state having minute unevenness. Preferably the surface has an average surface roughness in a range of 10 to 50 micrometers in at least the upper two thirds of the total distance (depth) of the side walls of the water drain grooves between the top of the groove and the bottom thereof. The water drain grooves can be manufactured by rotary cutting blades disposed in a position in contact with a roll around which a belt is wound. The roll and the rotary cutting blades rotate simultaneously and a groove cutting device is shifted in the width direction of the belt so that water drain grooves are formed in the belt.
    Type: Grant
    Filed: May 18, 2006
    Date of Patent: February 24, 2009
    Assignee: Ichikawa Co., Ltd.
    Inventor: Hiroyuki Takamura
  • Patent number: 7476294
    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: October 26, 2004
    Date of Patent: January 13, 2009
    Assignee: Voith Patent GmbH
    Inventors: Jeffrey Herman, Thomas Thoroee Scherb, Luiz Carlos Silva, Hubert Walkenhaus
  • Patent number: 7476293
    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: October 26, 2004
    Date of Patent: January 13, 2009
    Assignee: Voith Patent GmbH
    Inventors: Jeffrey Herman, Thomas Thoroee Scherb, Luiz Carlos Silva, Hubert Walkenhaus
  • Patent number: 7464731
    Abstract: An industrial two-layer fabric having a lower surface structure excellent in water drainage property, fiber supporting property, rigidity and wear resistance, obtained by binding an upper layer fabric and a lower layer fabric, wherein each of lower surface side wefts has a design in which it passes over one lower surface side warp, passes under one lower surface side warp, passes over one lower surface side warp and then passes under five successive lower surface side warps, while lower surface side warps each has a design in which it passes over four successive lower surface side wefts, passes under one lower surface side weft, passes over three successive lower surface side wefts, passes under one lower surface side weft, passes over two successive lower surface side wefts, passes under one lower surface side weft, passes over three successive lower surface side wefts and then passes under one lower surface side weft.
    Type: Grant
    Filed: October 26, 2006
    Date of Patent: December 16, 2008
    Assignee: Nippon Filcon Co. Ltd.
    Inventor: Shigenobu Fujisawa
  • Patent number: 7426944
    Abstract: Double layer forming fabrics, woven to an overall repeating weave pattern requiring at least 8 sheds in the loom, provide a low drainage area in a notional center plane between the paper and machine side layers, to resist and retard initial impingement drainage. Transverse binder yarn pairs follow a single combined path interweaving with paper side layer and machine side layer yarns, with long internal floats under at least four paper side layer yarns between exchange points and interlacing points in the machine side layer. The members of the pairs are laterally displaced in relation to each other along the single combined path. The fabric has a total warp fill after heatsetting of at least 100%. The drainage areas of the paper side layer and the machine side layers are between 25% and 50%, and the center plane drainage area is between 8% and 20%.
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: September 23, 2008
    Assignee: AstenJohnson, Inc.
    Inventors: Roger Danby, Dale B. Johnson, Richard Stone