With Felt Structure Or Felt Composition Patents (Class 162/358.2)
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Patent number: 8388811Abstract: The present invention relates to a press felt for a machine for the production and/or processing of a fibrous web including a carrier structure which fundamentally influences the dimensional stability of the felt. The carrier structure includes a flat manufactured textile fabric formed from longitudinal threads, transverse threads crossing the longitudinal threads, and sewing threads which connect the longitudinal and transverse threads with each other at the crossing points. The textile fabric is longer than the carrier structure and is laid onto itself in sections such that the carrier structure is formed by several layers of the textile fabric, extending respectively along the entire length of the carrier structure. The layers are connected with each other, at least in sections.Type: GrantFiled: April 1, 2010Date of Patent: March 5, 2013Assignee: Voith Patent GmbHInventor: Uwe Köckritz
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Patent number: 8382956Abstract: 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: GrantFiled: June 17, 2011Date of Patent: February 26, 2013Assignee: Voith Patent GmbHInventors: Joao V. Boechat, Thomas Scherb, Luiz C. Silva, Rogerio Berardi, Daniela Reis
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Patent number: 8366878Abstract: A structuring layer of a structuring belt for structuring a wet fibrous web in a press section of a tissue papermaking machine for manufacturing high bulk tissue paper, the structuring layer having a web-carrying side with a surface for cooperating with the fibrous web, the surface having depressions distributed over the web-carrying side and forming a three-dimensional structure of the surface. The depressions altogether constitute 20-80% of the surface. Each depression has a dimension l of 0.25-2.5 mm in a first direction in the plane of the top surface area, a dimension b of 0.25-2.0 mm in a second direction in the plane of the top surface area, such directions being at right angles to each other, a mean depth d of 0.05-0.6 mm, and an area a as measured in the plane of the top surface area of 0.063-5.0 mm2.Type: GrantFiled: July 9, 2012Date of Patent: February 5, 2013Assignee: Albany International Corp.Inventors: Ingvar Berndt Erik Klerelid, Ola Thomasson, Bo-Christer Aberg, Cary P Johnson, John J LaFond
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Publication number: 20130020043Abstract: A multiaxial press felt base fabric construction is provided in which the base fabric is formed from a spirally wound precursor textile strip having a width that is less than an overall width of the assembled papermaking fabric and which is joined together along neighboring adjacent edges to form a fabric tube. At least one of: 100% of the MD yarns located on one surface of the precursor textile strip are comprised of cabled yarns or from 50% to 100% of the CD yarns are a cabled yarn. The MD yarns are arranged as vertically stacked pairs for compression resistance to provide void volume, and the vertically stacked arrangement is maintained by interweaving with one system of CD weft yarns.Type: ApplicationFiled: July 23, 2012Publication date: January 24, 2013Applicant: ASTENJOHNSON, INC.Inventors: Daniel N. Hédou, Robert W. Huck, Mario Lepage, Hanjiang Xu
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Publication number: 20130008622Abstract: A paper machine clothing (PMC) fabric including a plurality of monofilament yarns, at least some of the monofilament yarns having a composition which includes an additive for detecting a defect on the paper machine clothing fabric.Type: ApplicationFiled: July 6, 2011Publication date: January 10, 2013Inventors: Jürgen Abraham, Ashish Sen, Brian Good
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Patent number: 8349138Abstract: 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: GrantFiled: May 18, 2010Date of Patent: January 8, 2013Assignee: Andritz AGInventors: Wilhelm Mausser, Andreas Anzel, Harald Weigant, David V. Lange
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Patent number: 8337670Abstract: A felt (10) for papermaking according to the present invention has a batt fiber layer comprising batt fibers contained in and integrally combined with a high-polymer elastic material (50). The batt fiber layer contained in the high-polymer elastic material (50) includes hydrophilic 1-methyl-2-pyrrolidone. The felt (10) for papermaking exhibits a hydrophilic capability as a felt structure from an initial phase of use. The felt has a sustained ability to be compressed and recovered for a long period of time and maintains water squeezing function, a wet paper web smoothing function, and a wet paper web feeding function until the end of the period in which the felt is used.Type: GrantFiled: July 5, 2007Date of Patent: December 25, 2012Assignee: Ichikawa Co., Ltd.Inventor: Takashi Oouchi
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Publication number: 20120298319Abstract: The present invention relates to a method of producing a cellulose-fiber flat structure, the method including obtaining a cellulose-fiber flat structure by filtering a fine cellulose-fiber dispersion containing fine cellulose fibers having an average fiber diameter of 4 to 100 nm, using a filter material having a water permeability of not more than 100 ml/m2·s and an initial tensile modulus of 20 MPa or greater. The present invention is able to produce a cellulose-fiber flat structure by efficiently recovering fine cellulose fibers from a dispersion containing fine cellulose fibers having an average fiber diameter at the nano level. The method of producing a cellulose-fiber flat structure can also be applied to a continuous process.Type: ApplicationFiled: February 1, 2011Publication date: November 29, 2012Applicants: OJI PAPER CO., LTD., MITSUBISHI CHEMICAL CORPORATIONInventors: Tsuyoshi Fujiwara, Naohide Ogita, Takashi Kawamukai
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Publication number: 20120291975Abstract: A fabric belt for producing a web material, the fabric belt including a first layer on a web material side and a second layer on a machine side of the belt. The layers each having a basic weave connected to each other by binding threads extending in a binding thread direction. The layers having base binding threads extending both in and transverse to the binding thread direction. The binding threads form binding segments which are successive in the binding thread direction in the second layer. The binding threads are tied off on one base binding thread of the second layer extending transversely to the binding thread direction. The binding segments formed in the second layer are arranged in a binding pattern repeat extended in and transverse to the binding thread direction along a binding segment diagonal progressing obliquely to the binding thread direction and transverse to the binding thread direction.Type: ApplicationFiled: June 11, 2012Publication date: November 22, 2012Inventors: Matthias Hoehsl, Johann Boeck
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Patent number: 8313617Abstract: The present disclosure is directed toward a papermaking belt having a patterned framework having a continuous network region and a plurality of discrete deflection conduits isolated from one another by the continuous network region. The continuous network region has a pattern formed therein by a plurality of tessellating unit cells. Each cell has a center and at least two continuous land areas extending in at least two directions from the center. At least one of the continuous land areas at least bifurcates to form a continuous land area portion having a first width before bifurcation and at least two continuous land area portions having a second width after bifurcation where the at least two continuous land area portions are disposed at an angle ranging from about 1 degree to about 180 degrees relative to each other.Type: GrantFiled: August 19, 2010Date of Patent: November 20, 2012Assignee: The Procter & Gamble CompanyInventors: Osman Polat, Douglas Jay Barkey
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Patent number: 8312900Abstract: The present invention relates to a paper machine fabric, especially a forming fabric, including a top woven fabric layer and a bottom woven fabric layer which are connected with each other by paired binder yarns. The present invention is characterized in that at least one of the binder yarn pairs is formed by machine direction yarns (binding machine direction yarns) and at least one of the other binder yarn pairs is formed by cross machine direction yarns (binding cross machine direction yarns).Type: GrantFiled: March 19, 2010Date of Patent: November 20, 2012Assignee: Voith Patent GmbHInventors: Petra Hack-Ueberall, Arved H. Westerkamp
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Patent number: 8308910Abstract: A method for manufacturing a press felt with a seam, to a press felt, and a base fabric of a press felt. The base fabric is a one-base structure with machine direction yarns forming seam loops and further machine direction yarns running in the web-side surface layer. The machine direction yarns weave with cross yarns. The yarn ratio of the surface layer machine direction yarns to the intermediate layer and further the bottom layer machine direction yarns is at least 2:1:1. In addition, the surface layer machine direction yarns have a long run and their cross-sectional area is smaller than the yarns forming the seam loops.Type: GrantFiled: September 24, 2008Date of Patent: November 13, 2012Assignee: Metso Fabrics, Inc.Inventors: Kati Mikkonen, Tauno Virtanen
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Patent number: 8303775Abstract: A papermaking felt which can be easily engaged in a papermaking machine, wherein the work time for engaging the felt is short, the initial warming-up period until reaching the highest papermaking speed is short, and the felt life is long, which is achieved by integrating and attaching by dispersion in the batt layer of the felt a polymeric elastomer having high deformability when pressure is applied and good recoverability after pressure is applied, which polymeric elastomer is attached in an amount of 0.5 to 20 wt. % of the felt, and which polymeric elastomer has a property that when in the form of a film and when measured at a room temperature of 20° C. and a relative humidity of 65%, the 100% modulus value of the film is 1 to 100 kg/cm2, the residual strain after 100% elongation is 30% or less.Type: GrantFiled: June 25, 2010Date of Patent: November 6, 2012Assignee: Ichikawa Co., Ltd.Inventors: Takao Yazaki, Takashi Ouchi, Hiroyuki Oda, Hirofumi Murakami, Yuya Takamori
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Patent number: 8298376Abstract: The present disclosure is directed toward a papermaking belt having an embryonic-web-contacting surface for carrying an embryonic web of paper fibers and a non-embryonic-web-contacting surface opposite the embryonic-web-contacting surface. The papermaking belt has a patterned framework having a continuous network region and a plurality of discrete deflection conduits isolated from one another by the continuous network region. The continuous network region has a pattern formed therein by a plurality of tessellating unit cells. Each cell has a center and at least two continuous land areas extending in at least two directions from the center. At least one of the continuous land areas at least bifurcates to form a continuous land area portion having a first width before the bifurcation and at least two continuous land area portions having a second width after the bifurcation.Type: GrantFiled: August 19, 2010Date of Patent: October 30, 2012Assignee: The Procter & Gamble CompanyInventors: Osman Polat, Paul Dennis Trokhan
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Patent number: 8282782Abstract: 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: GrantFiled: January 31, 2008Date of Patent: October 9, 2012Assignee: Ichikawa Co., Ltd.Inventors: Takeshi Sawada, Kenji Inoue
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Patent number: 8273218Abstract: A paper machine clothing, in particular a press felt for a paper, cardboard or tissue machine, includes a load bearing base structure that extends in the longitudinal and cross directions of the clothing and which is formed, for example from a longitudinal reinforcement module substantially providing the dimensional stability in longitudinal direction of the clothing, and a transverse reinforcement module substantially providing the dimensional stability in the cross direction of the clothing, which is arranged on the longitudinal reinforcement module and is connected with same. The transverse reinforcement module is a warp knit fabric, which includes at least one system of warp threads arranged parallel to each other and one system of stitch-forming sewing threads extending substantially perpendicular thereto into which the warp threads are integrated to form a textile fabric.Type: GrantFiled: May 20, 2011Date of Patent: September 25, 2012Assignee: Voith Patent GmbHInventor: Uwe Köckritz
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Patent number: 8267125Abstract: A papermaking forming fabric includes a series of repeat units, wherein each repeat units includes: a set of top machine direction (MD) yarns; a set of top cross-machine direction (CMD) yarns interwoven with the top MD yarns to form a top fabric layer; a set of bottom MD yarns; a set of bottom CMD yarns interwoven with the bottom MD yarns to form a bottom fabric layer; and a set of stitching yarns interwoven with the top and bottom fabric layers. The bottom MD yarns and bottom CMD are woven such that floats formed by the bottom CMD yarns under the bottom MD yarns are at least 1.8 mm in length. A first ratio of top MD yarn coverage area to bottom MD yarn coverage area is less than 0.5, and a second ratio of bottom CMD yarn cross-sectional area to bottom MD yarn cross-sectional area is greater than 2.0.Type: GrantFiled: December 6, 2011Date of Patent: September 18, 2012Assignee: Huyck Licensco Inc.Inventors: Joachim Pitzler, Jan Freudenberg, Renate Gleich
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Patent number: 8262864Abstract: This aims to provide a paper making machine belt (a shoe press belt) having excellent wet squeezability but less damages (such as cracks or wear) of the outer periphery of a belt being used. The paper making shoe press belt includes drainage conduits extended in the felt-side surface thereof. The drainage conduits are discontinuous grooves, and are made semi-arcuate on at least one of the belt ends in a belt running direction (an MD direction).Type: GrantFiled: November 19, 2008Date of Patent: September 11, 2012Assignee: Ichikawa Co., Ltd.Inventor: Hiroyuki Takamura
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Patent number: 8257556Abstract: The present invention provides a papermaking felt which exhibits a good dewatering capability (water permeability) and resistance to flattening in a papermaking machine, and which is capable of improving surface smoothness of a wet paper web and has improved anti-dehairing property. A papermaking felt using a woven fabric in which at least one of an MD yarn and a CMD yarn arranged on a wet paper web side of a base body is a multifilament yarn which is a bundle of a plurality of filaments with fineness of 100 dtex or less and which is substantially without twisting or only loosely twisted and hence almost without twisting.Type: GrantFiled: August 12, 2008Date of Patent: September 4, 2012Assignee: Ichikawa Co., Ltd.Inventor: Yasuyuki Ogiwara
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Patent number: 8251103Abstract: A papermaking forming fabric includes: a set of top MD yarns; a set of top CMD yarns interwoven with the top MD yarns to form a top fabric layer; a set of bottom MD yarns; a set of bottom CMD yarns interwoven with the bottom MD yarns to form a bottom fabric layer; and a set of binding yarns that interweaves with and binds together the top and bottom fabric layers. The fabric has a Channel Factor (CF) of greater than 2.0, the CF being defined in Equation (1) as: CF=(PSMW/PSML)×(SOA % PS/SOA % RS)??(1) wherein: PSMW=the CMD width of an interstice between adjacent top MD yarns; PSML=the MD width of an interstice between adjacent top CMD yarns; SOA % PS=surface open area in the top fabric layer; and SOA % RS=surface open area in the bottom fabric layer.Type: GrantFiled: October 29, 2010Date of Patent: August 28, 2012Assignee: Weavexx CorporationInventor: Oliver Baumann
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Patent number: 8252147Abstract: A press felt 10 comprises a base body 30 and a batt layer having a wet paper side layer 20. The wet paper web side layer 20 has a base body side batt layer 22, upright fiber bundles 50 are formed in the basebody side batt layer 22. After needle punching a core-in-sheath fiber 41, the upright fiber bundles are formed by melting the sheath member of the core-in-sheath fibers 41 into a pillar form melted by heat treatment. As a result, the base body side batt layer 22 is made dense and blocks water within the press side batt layer 23 from moving to the wet paper web side, thereby preventing rewetting; moreover, the invention successfully enhances resistance to abrasion and compression fatigue of the felt 10 by the upright fiber bundles 50 fusion-bonded into a pillar form.Type: GrantFiled: December 27, 2007Date of Patent: August 28, 2012Assignee: Ichikawa Co., Ltd.Inventor: Takashi Ohuchi
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Patent number: 8246782Abstract: An apparatus for transferring a wet paper web from a press nip to a drying cylinder of a papermaking machine, and for structuring the web, includes an impermeable transfer belt that passes through the press nip along with the paper web, and a permeable structuring fabric for transfer of the web onto the drying cylinder, the structuring fabric being arranged in a loop within which a suction transfer device is disposed. A web-contacting surface of the belt has a non-uniform distribution of microscopic-scale depressions, and a suction zone of the transfer device includes a transfer point spaced a distance D from the press nip. The belt is arranged to bring the web into contact with the structuring fabric in the suction zone for a length L, such that suction is exerted on the paper web to transfer the paper web from the belt onto the structuring fabric at the transfer point.Type: GrantFiled: November 4, 2011Date of Patent: August 21, 2012Assignee: Metso Paper Karlstad ABInventors: Paul Douglas Beuther, Frank Stephen Hada, Jeffrey Dean Holz, Hans Ivarsson, Ingvar Berndt Erik Klerelid, Johan Ulf Ragard
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Patent number: 8241465Abstract: A press felt for use in a paper, cardboard or tissue machine, with an open, load-carrying base structure which, viewed in longitudinal direction of the press felt, includes seam loops on one end, as well as seam loops at the other end, whereby the seam loops on the one end and the ones on the other end can be brought together for the purpose of producing the endless press felt and can be intermeshed with each other, so that a pass through opening is created through which a pintle can be guided, and comprising a machine side fibrous nonwoven structure which is located on the base structure and which provides the machine side of the press felt and which, viewed in longitudinal direction of the press felt, has one end section and one other end section, whereby when viewed in longitudinal direction of the press felt, the seam loops respectively extend at least partially over the end sections of the machine side fibrous nonwoven structure.Type: GrantFiled: August 20, 2009Date of Patent: August 14, 2012Assignee: Voith Patent GmbHInventors: Bob Crook, Clifton Wilder
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Patent number: 8240342Abstract: A papermaker's press felt includes: a base fabric comprising: a set of top machine direction (MD) yarns; a set of bottom MD yarns; and a set of cross machine direction (CMD) yarns interwoven with the top MD yarns and the bottom MD yarns. The top MD yarns, bottom MD yarns, and CMD yarns are interwoven in a series of repeat units in which each top MD yarn forms a long MD paper side float above certain consecutive ones of the set of CMD yarns. The press felt further comprises at least one batt layer attached to the base fabric. In this configuration, the long paper side floats of the base fabric can provide a desirable balance of properties.Type: GrantFiled: September 17, 2008Date of Patent: August 14, 2012Assignee: Huyck Austria GmbHInventors: Hippolit Gstrein, Klaus Haiden
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Patent number: 8225821Abstract: A connecting element for use in an industrial fabric. The connecting element includes a center portion and a plurality of lobes extending therefrom. The industrial fabric may be a spiral link fabric. The connecting element deforms under compression or tension reducing the fabric thickness and permeability.Type: GrantFiled: December 10, 2004Date of Patent: July 24, 2012Assignee: Albany International Corp.Inventors: Hans-Peter Breuer, Jesus Perez, William Luciano
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Publication number: 20120180971Abstract: A patterned framework for a papermaking belt is disclosed. The patterned framework has a continuous network region having a pattern formed comprising a plurality of tessellating unit cells and a plurality of discrete regions isolated from one another by the continuous network region. Each cell has a center and at least two continuous land areas extending in at least two directions from the center. At least one of the continuous land areas at least bifurcates to form a continuous land area portion having a first width before the bifurcation and at least two continuous land area portions having a second width after the bifurcation in continuous communication with the continuous land area portion. Removing and drying the embryonic web of paper fibers disposed upon the patterned framework provides a paper product having a residual water value, RW, of less than 0.12 g.Type: ApplicationFiled: March 27, 2012Publication date: July 19, 2012Inventors: Osman Polat, Jeffrey Glen Sheehan
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Patent number: 8216427Abstract: A structuring layer of a structuring belt for structuring a wet fibrous web in a press section of a tissue papermaking machine for manufacturing high bulk tissue paper, the structuring layer having a web-carrying side with a surface for cooperating with the fibrous web, the surface having depressions distributed over the web-carrying side and forming a three-dimensional structure of the surface. The depressions altogether constitute 20-80% of the surface. Each depression has a dimension l of 0.25-2.5 mm in a first direction in the plane of the top surface area, a dimension b of 0.25-2.0 mm in a second direction in the plane of the top surface area, such directions being at right angles to each other, a mean depth d of 0.05-0.6 mm, and an area a as measured in the plane of the top surface area of 0.063-5.0 mm2.Type: GrantFiled: September 17, 2009Date of Patent: July 10, 2012Assignee: Albany International Corp.Inventors: Ingvar Berndt Erik Klerelid, Ola Thomasson, Bo-Christer Aberg, Cary P. Johnson, John J. LaFond
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Publication number: 20120160439Abstract: A fabric belt for a machine for producing a web of fibrous material includes: a first fabric layer including a web contact side and formed by interweaving a plurality of warps with a plurality of wefts; and a second fabric layer positioned below said first fabric layer and formed by interweaving a plurality of warps with a plurality of wefts, a first ratio of a number of said plurality of warps of said first fabric layer to a number of said plurality of warps of said second fabric layer being greater than 1, a second ratio of a number of said plurality of wefts of said first fabric layer to a number of said plurality of wefts of said second fabric layer being greater than 1.Type: ApplicationFiled: February 29, 2012Publication date: June 28, 2012Inventors: Johann Boeck, Matthias Hoehsl, Petra Hack-Ueberall
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Patent number: 8205644Abstract: An industrial two-layer fabric constituted by at least one upper surface side warp to be woven with at least one upper surface side weft, at least one lower surface side warp to be woven with at least one lower surface side weft, and at least one warp binding yarn to be woven with the at least one upper surface side weft and the at least one lower surface side weft having at least one pair of upper and lower warps in which the upper and lower surface side warps are located to be upper and lower, respectively, and at least one pair of warp binding yarns in which at least one yarn constitutes a warp binding yarn.Type: GrantFiled: October 6, 2008Date of Patent: June 26, 2012Assignee: Nippon Filcon Co., Ltd.Inventor: Ikuo Ueda
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Patent number: 8206555Abstract: A papermaking machine for making paper includes a forming section, a press section, and a drying section. 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 following 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 then being dried on a drying cylinder. The transfer point is spaced a distance D from the press nip selected based on machine speed, a basis weight of the web, and the surface characteristics of the transfer belt, such that within the distance D a thin water film between the web and the transfer belt at least partially dissipates to allow the web to be separated from the transfer belt.Type: GrantFiled: December 1, 2011Date of Patent: June 26, 2012Assignee: Metso Paper Karlstad ABInventors: Ingvar Berndt Erik Klerelid, Hans Ivarsson, Johan Ulf Ragard, Frank Stephen Hada, Paul Douglas Beuther, Jeffrey Dean Holz
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Publication number: 20120145349Abstract: Press felts for papermaking include a batt fiber layer and a base fabric. The batt fiber layer is integrated into the base fabric. The base fabric includes a ground warp yarn, a ground weft yarn, and an additional warp yarn. The ground warp yarn and the ground weft yarn include monofilament yarns, and the additional warp yarn includes a material different from a material forming the ground warp yarn. The additional warp yarn is arranged so that, when the base fabric is viewed in cross-section in a warp yarn direction, the additional warp yarn ascends toward a wet paper web-side surface of the base fabric and descends toward a roll-side surface of the base fabric, relative to the at least one ground warp yarn.Type: ApplicationFiled: December 8, 2011Publication date: June 14, 2012Applicant: ICHIKAWA CO., LTD.Inventor: Yasuyuki OGIWARA
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Publication number: 20120145348Abstract: A papermaking forming fabric includes a series of repeat units, wherein each repeat units includes: a set of top machine direction (MD) yarns; a set of top cross-machine direction (CMD) yarns interwoven with the top MD yarns to form a top fabric layer; a set of bottom MD yarns; a set of bottom CMD yarns interwoven with the bottom MD yarns to form a bottom fabric layer; and a set of stitching yarns interwoven with the top and bottom fabric layers. The bottom MD yarns and bottom CMD are woven such that floats formed by the bottom CMD yarns under the bottom MD yarns are at least 1.8 mm in length. A first ratio of top MD yarn coverage area to bottom MD yarn coverage area is less than 0.5, and a second ratio of bottom CMD yarn cross-sectional area to bottom MD yarn cross-sectional area is greater than 2.0.Type: ApplicationFiled: December 6, 2011Publication date: June 14, 2012Inventors: Joachim Pitzler, Jan Freudenberg, Renate Gleich
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Patent number: 8196613Abstract: A papermaker's fabric includes a series of repeat units. Each of the repeat units includes: a set of top machine direction (MD) yarns; a set of top cross-machine direction (CMD) yarns interwoven with the top MD yarns to form a top fabric layer; a set of bottom MD yarns; and a set of bottom CMD yarns interwoven with the bottom MD yarns to form a bottom fabric layer. Each bottom MD yarn passes over a top CMD yarn that its immediate neighboring top MD yarn passes under. The top MD yarns, the top CMD yarns, and the bottom MD yarns interweave to form a twill papermaking surface on the top fabric layer.Type: GrantFiled: February 4, 2010Date of Patent: June 12, 2012Inventor: Kevin John Ward
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Patent number: 8192583Abstract: 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: GrantFiled: February 18, 2011Date of Patent: June 5, 2012Assignee: Ichikawa Co., Ltd.Inventors: Takao Yazaki, Atsushi Ishino, Kenji Inoue, Ai Tamura
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Publication number: 20120132384Abstract: The invention relates to a shoe press belt comprising polyurethane polymer prepared of a urethane prepolymer containing isocyanate groups and a blend of chain extenders, the urethane prepolymer being prepared using 1,4-phenyIene-diisocyanate (PPDI) and the blend of chain extenders comprising methyl-bis(3-chloro-2,6-diethyl-aniline) (MCDEA).Type: ApplicationFiled: December 10, 2009Publication date: May 31, 2012Applicant: METSO FABRICS INC.Inventors: Satu Hagfors, Vesa-Matti Riihioja, Marja Ojanen
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Patent number: 8181673Abstract: A woven fabric band having a first and a second woven fabric layer having second longitudinal and second transverse threads, the outer side of the second woven fabric layer being formed by floats of longitudinal threads, wherein the longitudinal threads form a first longitudinal thread group with outer longitudinal threads and a second longitudinal thread group with inner longitudinal threads and that the outer longitudinal threads form the outer side of the second layer and the inner longitudinal threads extend within the band.Type: GrantFiled: March 22, 2010Date of Patent: May 22, 2012Assignee: Heimbach GmbH & Co. KGInventors: Alister John Rigby, Rex Barrett
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Patent number: 8176945Abstract: Paper machine clothing that includes interwoven warp threads and weft threads forming a weaving pattern composed of repeat units having at least 26 warp threads. The weaving pattern, one of on its own or in combination, is formed by at least one of: at least one basic textile weave, at least one derivative of a basic textile weave, and at least one extension of a basic textile weave.Type: GrantFiled: July 21, 2005Date of Patent: May 15, 2012Assignee: Voith Fabrics Patent GmbHInventors: Arved Westerkamp, Johann Boeck
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Patent number: 8176944Abstract: Paper machine clothing, such as a forming fabric formed by a large number of repeating units, wherein each repeat unit includes a paper-side woven structure having paper-side warp and weft threads and a machine-side woven structure having machine-side warp and weft threads, such that the paper side and the machine side woven structures are connected to each other by binding threads, and each repeat unit being formed by at least 26 warp threads and the paper machine clothing having a total thickness of 0.78 mm and less.Type: GrantFiled: July 21, 2005Date of Patent: May 15, 2012Assignee: Voith Fabrics Patent GmbHInventor: Arved Westerkamp
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Patent number: 8172986Abstract: A fabric belt unit for manufacturing corrugated board in a corrugator machine includes a belt (1) joined together at its two ends (2, 3) to form a continuous belt. The fabric belt has an outer paper side (6) as well as an inner driven side (8). The belt ends (2, 3) are reduced thermally in thickness and have a plurality of approximately U-shaped clamps (7) which are connected to each other to form a joint. The U-shaped clamps (7) lie at a distance (a) one next to the other. The distance (u) of the driven side (8) of the belt to the plane (36) of the thickness-reduced belt ends (2, 3) is greater than the distance (v) between the paper side (6) and the plane (46) of the thickness-reduced belt ends (2, 3) in order to obtain a longer service life of the belt.Type: GrantFiled: September 22, 2008Date of Patent: May 8, 2012Assignee: Muehlen Sohn GmbH & Co.Inventor: Hartmut Bella
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Publication number: 20120097353Abstract: A substrate for an endless belt in a papermaking machine comprising a plurality of preformed layers coated or impregnated with a polymeric or rubber material. Each preformed layer may be a textile material. At least one layer contains a matrix of preformed reinforcing components. The individual layers are first coated with a polymer resin or rubber material and then combined/stacked and cured/bonded to form the substrate of the belt.Type: ApplicationFiled: January 3, 2012Publication date: April 26, 2012Applicant: Albany International Corp.Inventor: Keith FITZPATRICK
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Patent number: 8147654Abstract: A wet paper web transfer belt (1) has a wet paper web-side layer (31), including a hydrophilic fibrous body (30), and a machine-side layer (32). A base 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, and the first woven fabric (34) and the second woven fabric (35) are stacked together. A portion of the hydrophilic fibrous body (30) is exposed on a surface (37) of the wet paper web-side layer (31). The first woven fabric (34) and the second woven fabric (35) include weft yarns (36) made of a material of low water absorptivity. When the hydrophilic fibrous body (30) is formed in the wet paper web-side layer (31) of the belt (1) by needle punching, an increase in the widthwise dimension of the belt due to the absorption of water by the hydrophilic fibrous body (30) is reduced.Type: GrantFiled: October 26, 2007Date of Patent: April 3, 2012Assignee: Ichikawa Co., Ltd.Inventors: Takeshi Sawada, Kenji Inoue
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Publication number: 20120073777Abstract: A papermaking machine for making paper includes a forming section, a press section, and a drying section. 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 following 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 then being dried on a drying cylinder. The transfer point is spaced a distance D from the press nip selected based on machine speed, a basis weight of the web, and the surface characteristics of the transfer belt, such that within the distance D a thin water film between the web and the transfer belt at least partially dissipates to allow the web to be separated from the transfer belt.Type: ApplicationFiled: December 1, 2011Publication date: March 29, 2012Applicant: METSO PAPER KARLSTAD ABInventors: Ingvar Berndt Erik Klerelid, Hans Ivarsson, Johan Ulf Ragard, Frank Stephen Hada, Paul Douglas Beuther, Jeffrey Dean Holz
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Publication number: 20120073776Abstract: 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: ApplicationFiled: June 18, 2010Publication date: March 29, 2012Inventors: John Jeffrey, Michael Spence, Andrew Allum, Paul Rydin
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Patent number: 8141595Abstract: A fabric for papermaking includes a first layer side, a second layer side and at least one binder warp yarn pair. The first side layer has a plurality of first weft yarns and a plurality of first warp yarns. The second side layer has a plurality of second weft yarns and a plurality of second warp yarns. The at least one binder warp yarn pair includes a first binder warp yarn pair having a first binder warp yarn and a second binder warp yarn, the first side layer and the second side layer being bound by the first binder warp yarn pair. The first binder warp yarn and the second binder warp yarn exchange the layer to which they are woven at exchange points. A knuckle is formed with the first binder warp yarn and an adjacent first warp yarn, a subsequent adjacent knuckle only being formed with the first binder warp yarn and an opposite adjacent first warp yarn.Type: GrantFiled: August 14, 2009Date of Patent: March 27, 2012Assignee: Voith Patent GmbHInventor: Scott Quigley
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Patent number: 8137507Abstract: 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: GrantFiled: June 24, 2008Date of Patent: March 20, 2012Assignee: Ichikawa Co., Ltd.Inventors: Atsushi Ishino, Nobuharu Suzuki, Shintaro Yamazaki, Takeshi Sawada, Tomoyuki Kawamata
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Patent number: 8123911Abstract: The invention relates to a felt belt, especially a press felt for a paper—, cardboard or tissue machine, with a basic structure that is formed by (a) a longitudinal reinforcement module extending on the width and length of the felt belt, including (1) a laid longitudinal thread structure on the width and the length of the felt belt which is formed by at least one longitudinal thread extending essentially in longitudinal direction of the belt, and (2) one carrying layer which is bonded with the laid longitudinal thread structure and extends on the width and the length of the felt belt, as well as (b) one cross reinforcement module which has the same length and width as the felt belt which is located on and bonded with the longitudinal reinforcement module which is formed by a plurality of cross reinforcement module segments, each of which extend on the width of the felt belt, and only on part of the length of the felt belt and which are arranged in tandem in longitudinal direction of the felt belt and which toType: GrantFiled: March 31, 2009Date of Patent: February 28, 2012Assignee: Voith Patent GmbHInventors: Uwe Köckritz, Matthias Schmitt
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Publication number: 20120012269Abstract: A recycled paper smoothing technology capable of regenerating the wet paper made and formed in the paper making process unit of the paper making unit securely as a smooth recycled paper free from wrinkle, in a very narrow used paper processing space of a used paper recycling apparatus of furniture size. A recycled paper smoothing unit has a smooth surface belt for conveying the wet paper, and a belt guide unit for conveying and guiding the smooth surface belt in a state curved upward toward the running direction thereof, and the wet paper on the smooth surface belt conveyed by the smooth surface belt is provided with a tension uniformly in the conveying and running direction, by the running action of the smooth surface belt, and the curved shape of the smooth surface belt due to the belt guide unit, so that a smooth recycled paper free from wrinkle is regenerated securely.Type: ApplicationFiled: May 25, 2011Publication date: January 19, 2012Inventors: Shigeru Tamai, Yuji Koyama
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Patent number: 8083898Abstract: A method for manufacturing a machine felt. Firstly a tube having a longitudinal yarn layer is manufactured with a peripheral length double the length of the machine felt, and a width that corresponds to the width of the machine felt. The tube is compressed into a flattened tube with the formation of longitudinal yarn loops which are exposed by the removal of fibers of a fiber batt layer. An auxiliary substrate web is manufactured with a width that is less than that of the machine felt; for the longitudinal yarns and/or for the auxiliary substrate web, a material is used that absorbs laser energy; the longitudinal yarns are brought together with the auxiliary substrate web and connected by a laser beam; the auxiliary substrate web is helically wound until the tube is formed; and upon exposure of the longitudinal yarn loops, the auxiliary substrate web(s) are also removed.Type: GrantFiled: December 4, 2008Date of Patent: December 27, 2011Assignee: Heimbach GmbH & Co. KGInventors: Walter Best, Axel Burmeister, Christian Molls
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Patent number: 8075738Abstract: An apparatus for transferring a wet paper web from a press nip to a drying cylinder (52) of a papermaking machine, and for structuring the web, comprises an impermeable transfer belt (35) having a web-contacting surface, the wet paper web passing through the press nip enclosed between a press felt (33) and the transfer belt, and a permeable structuring fabric (37) for transfer of the web onto the drying cylinder, the structuring fabric having a structured surface and being arranged in a loop within which a suction transfer device (38) is disposed, said suction transfer device having a suction zone (41).Type: GrantFiled: October 26, 2007Date of Patent: December 13, 2011Assignee: Metso Paper Karlstad ABInventors: Paul Douglas Beuther, Frank Stephen Hada, Jeffrey Dean Holz, Hans Ivarsson, Ingvar Berndt Erik Klerelid, Johan Ulf Ragard
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Publication number: 20110290443Abstract: A paper machine clothing, in particular a press felt for a paper, cardboard or tissue machine, includes a load bearing base structure that extends in the longitudinal and cross directions of the clothing and which is formed, for example from a longitudinal reinforcement module substantially providing the dimensional stability in longitudinal direction of the clothing, and a transverse reinforcement module substantially providing the dimensional stability in the cross direction of the clothing, which is arranged on the longitudinal reinforcement module and is connected with same. The transverse reinforcement module is a warp knit fabric, which includes at least one system of warp threads arranged parallel to each other and one system of stitch-forming sewing threads extending substantially perpendicular thereto into which the warp threads are integrated to form a textile fabric.Type: ApplicationFiled: May 20, 2011Publication date: December 1, 2011Inventor: Uwe Köckritz