Patents by Inventor Thomas Scherb
Thomas Scherb has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10808360Abstract: A method for producing a fibrous material web, particularly for producing a tissue or hygienic paper web, in which a fibrous suspension is dewatered in a crescent former to obtain a fibrous material web, and dried on a Yankee. After the crescent former, the fibrous material web is guided along with the forming screen and felt over a suction roller downstream of the forming roller. A device for carrying out the method for producing a fibrous material web.Type: GrantFiled: September 15, 2016Date of Patent: October 20, 2020Assignee: Andritz AGInventors: Andreas Anzel, Klaus Gissing, Thomas Scherb
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Publication number: 20190360155Abstract: A method for producing a fibrous material web, particularly for producing a tissue or hygienic paper web, in which a fibrous suspension is dewatered in a crescent former to obtain a fibrous material web, and dried on a Yankee. After the crescent former, the fibrous material web is guided along with the forming screen and felt over a suction roller downstream of the forming roller. A device for carrying out the method for producing a fibrous material web.Type: ApplicationFiled: September 15, 2016Publication date: November 28, 2019Inventors: Andreas Anzel, Klaus Gissing, Thomas Scherb
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Patent number: 9856603Abstract: A method for producing a fibrous pulp web, in which a fibrous pulp suspension is dewatered in a Twin Wire Former to form a fibrous pulp web which is dried with a TAD dryer. A pre-dewatering device with a hood and suction roll is provided after the Twin Wire Former and before the TAD dryer. The fibrous pulp web is guided through the pre-dewatering device between exactly two machine cloths. The machine cloth between suction roll and the web is a porous felt, and the machine cloth between web and hood is a structured wire. A volume flux of hot drying fluid greater than 100 m3/(m2·min), preferably greater than 250 m3/(m2·min,) is drawn through the fibrous pulp web into the suction roll.Type: GrantFiled: October 3, 2016Date of Patent: January 2, 2018Assignee: ANDRITZ AGInventors: Andreas Anzel, Klaus Gissing, Thomas Scherb, Wilhelm Mausser
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Publication number: 20170096775Abstract: A method for producing a fibrous pulp web, in which a fibrous pulp suspension is dewatered in a Twin Wire Former to form a fibrous pulp web which is dried with a TAD dryer. A pre-dewatering device with a hood and suction roll is provided after the Twin Wire Former and before the TAD dryer. The fibrous pulp web is guided through the pre-dewatering device between exactly two machine cloths. The machine cloth between suction roll and the web is a porous felt, and the machine cloth between web and hood is a structured wire. A volume flux of hot drying fluid greater than 100 m3/(m2min), preferably greater than 250 m3/(m2min,) is drawn through the fibrous pulp web into the suction roll.Type: ApplicationFiled: October 3, 2016Publication date: April 6, 2017Inventors: Andreas Anzel, Klaus Gissing, Thomas Scherb, Wilhelm Mausser
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Patent number: 9347180Abstract: The invention relates to a device for dewatering a fibrous web with a press zone which is formed by a mating element with a curved surface and a permeable press belt which wraps at least partially around the curved surface and has a running side and a contact side contacting a second side of the fibrous web. A permeable carrier belt arranged between the mating element and the fibrous web guides the fibrous web through the press zone. The device is configured so a fluid can flow through the press belt, the fibrous web, and the permeable carrier belt at least in a part region of the press zone. The permeable press belt is configured to generate a pressing pressure in the press zone when a tensile stress of at least 20 kN/m is applied and the contact side is adapted to a quality of the fibrous web produced.Type: GrantFiled: February 24, 2015Date of Patent: May 24, 2016Assignee: Voith Patent GmbHInventors: Luiz Carlos Silva, Thomas Scherb, Daniel Schoeps, Dalcio Chiaranda, Daniela Reis
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Patent number: 9328460Abstract: The invention relates to a method and to a device for drying a fibrous web wherein the traveling fibrous web is acted upon by steam and hot, moist air in the region of a preceding drying zone and is then fed to the preceding drying zone of a downstream drying zone comprising a drying cylinder and a hood allocated thereto. Hot air is taken out of the hood allocated to the drying cylinder of the downstream drying zone. To create at least a portion of the steam for the preceding drying zone, condensate and/or fresh water occurring in the drying cylinder of the downstream drying zone is heated by the hot air taken out of the hood by means of a first heat exchanger. Alternatively or additionally for creating at least a portion of the hot, moist air for the preceding drying zone, the hot air taken out of the hood guided through the first heat exchanger is fed to the preceding drying zone.Type: GrantFiled: August 10, 2011Date of Patent: May 3, 2016Assignee: Voith Patent GmbHInventors: Thomas Scherb, Joao V. Boechat
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Patent number: 9267236Abstract: The invention relates to a device for dewatering a fibrous web with a press zone which is formed by a mating element with a curved surface and a permeable press belt which wraps at least partially around the curved surface and has a running side and a contact side contacting a second side of the fibrous web. A permeable carrier belt arranged between the mating element and the fibrous web guides the fibrous web through the press zone. The device is configured so a fluid can flow through the press belt, the fibrous web, and the permeable carrier belt at least in a part region of the press zone. The permeable press belt is configured to generate a pressing pressure in the press zone when a tensile stress of at least 20 kN/m is applied and the contact side is adapted to a quality of the fibrous web produced.Type: GrantFiled: October 18, 2013Date of Patent: February 23, 2016Assignee: Voith Patent GmbHInventors: Luiz Carlos Silva, Thomas Scherb, Daniel Schoeps, Dalcio Chiaranda, Daniela Reis
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Publication number: 20150167242Abstract: The invention relates to a device for dewatering a fibrous web with a press zone which is formed by a mating element with a curved surface and a permeable press belt which wraps at least partially around the curved surface and has a running side and a contact side contacting a second side of the fibrous web. A permeable carrier belt arranged between the mating element and the fibrous web guides the fibrous web through the press zone. The device is configured so a fluid can flow through the press belt, the fibrous web, and the permeable carrier belt at least in a part region of the press zone. The permeable press belt is configured to generate a pressing pressure in the press zone when a tensile stress of at least 20 kN/m is applied and the contact side is adapted to a quality of the fibrous web produced.Type: ApplicationFiled: February 24, 2015Publication date: June 18, 2015Applicant: Voith Patent GmbHInventors: Luiz Carlos Silva, Thomas Scherb, Daniel Schoeps, Dalcio Chiaranda, Daniela Reis
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Patent number: 8728277Abstract: 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: GrantFiled: October 17, 2013Date of Patent: May 20, 2014Assignee: Voith Patent GmbHInventors: Joao V. Boechat, Thomas Scherb, Luiz C. Silva, Rogerio Berardi, Daniela Reis
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Publication number: 20140053997Abstract: The invention relates to a device for dewatering a fibrous web with a press zone which is formed by a mating element with a curved surface and a permeable press belt which wraps at least partially around the curved surface and has a running side and a contact side contacting a second side of the fibrous web. A permeable carrier belt arranged between the mating element and the fibrous web guides the fibrous web through the press zone. The device is configured so a fluid can flow through the press belt, the fibrous web, and the permeable carrier belt at least in a part region of the press zone. The permeable press belt is configured to generate a pressing pressure in the press zone when a tensile stress of at least 20 kN/m is applied and the contact side is adapted to a quality of the fibrous web produced.Type: ApplicationFiled: October 18, 2013Publication date: February 27, 2014Applicant: Voith Patent GmbHInventors: Luiz Carlos Silva, Thomas Scherb, Daniel Schoeps, Dalcio Chiaranda, Daniela Reis
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Publication number: 20140041822Abstract: 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: ApplicationFiled: October 17, 2013Publication date: February 13, 2014Applicant: Voith Patent GmbHInventors: Joao V. Boechat, Thomas Scherb, Luiz C. Silva, Rogerio Berardi, Daniela Reis
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Patent number: 8580083Abstract: 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: GrantFiled: January 24, 2013Date of Patent: November 12, 2013Assignee: Voith Patent GmbHInventors: Joao V. Boechat, Thomas Scherb, Luiz C. Silva, Rogerio Berardi, Daniela Reis
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Patent number: 8544184Abstract: A machine for the production of a fibrous web. The fibrous web being a paper web, a cardboard web or a tissue web. The machine including a hot air hood, an upstream drying zone, a downstream dryer cylinder and a dryer hood. The upstream drying zone has an area in which the moving fibrous web is treated with hot air from the hot air hood, the hot air hood being allocated to the upstream drying zone. The downstream dryer cylinder is a Yankee-Cylinder. The dryer hood is associated with the downstream dryer cylinder for further drying of the fibrous web. The hot air for the hot air hood is at least partially recovered from the dryer hood which is associated to the downstream drying cylinder.Type: GrantFiled: February 20, 2013Date of Patent: October 1, 2013Assignee: Voith Patent GmbHInventors: Luiz C. Da Silva, Thomas Scherb, Ronaldo Parucker, Oswaldir Rizzatto
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Patent number: 8435384Abstract: A method for drying a fibrous web, particularly a paper, cardboard or tissue web whereby the moving fibrous web is treated with got air in the area of a pre-definable drying zone the fibrous web is treated, at least in some areas inside the drying zone with steam.Type: GrantFiled: June 18, 2009Date of Patent: May 7, 2013Assignee: Voith Patent GmbHInventors: Luiz C. Da Silva, Thomas Scherb, Peter Kahl, Frank Wegehaupt, Dieter Müller
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Patent number: 8402673Abstract: A method for drying a fibrous web, especially a paper, cardboard or tissue web, the moving web is treated with hot air from a hot air hood in the area of a upstream pre-defined drying zone, and is subsequent carried to the drying zone in a downstream drying cylinder, especially a Yankee-Cylinder, to which an additional hood is allocated and in whose area the fibrous web is dried further. The hot air for the hot air hood allocated to the upstream drying zone is recovered, at least partially, from the exhaust air of the hood allocated to the downstream drying cylinder.Type: GrantFiled: June 18, 2009Date of Patent: March 26, 2013Assignee: Voith Patent GmbHInventors: Luiz C. Da Silva, Thomas Scherb, Ronaldo Parucker, Oswaldir Rizzatto
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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: 8303773Abstract: A method of producing a tissue paper web in a papermaking machine including the steps of forming the web on a skin, selecting a quality of the web, bypassing a dewatering apparatus, passing the skin and web through a nip and conveying the web to a drying cylinder from the skin. The web is formed in a forming section of the machine from a pulp suspension on the skin. In the selecting step a quality of the web is selected thereby defining a quality selection of absorbency or tear resistance. The bypassing step includes bypassing the dewatering apparatus with the web and selecting a type of the skin dependent upon the quality selection.Type: GrantFiled: August 11, 2011Date of Patent: November 6, 2012Assignee: Voith Patent GmbHInventors: Thomas Scherb, Luiz Carlos Silva, Rogerio Berardi, Danilo Oyakawa
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Publication number: 20120103544Abstract: Method for producing a tissue web which includes moving the tissue web over at least one drying cylinder, removing the tissue web from the at least one drying cylinder with a creping doctor, supporting one side of the tissue web with a transfer device at least largely over an entire distance between the creping doctor and a winding device, wherein the tissue web has a free web draw between the creping doctor and the winding device, and winding the tissue web with a winding device.Type: ApplicationFiled: October 28, 2011Publication date: May 3, 2012Applicant: VOITH PATENT GMBHInventors: Thomas SCHERB, Luiz Carlos Silva
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Publication number: 20120000089Abstract: The invention relates to a method and to a device for drying a fibrous web wherein the traveling fibrous web is acted upon by steam and hot, moist air in the region of a preceding drying zone and is then fed to the preceding drying zone of a downstream drying zone comprising a drying cylinder and a hood allocated thereto. Hot air is taken out of the hood allocated to the drying cylinder of the downstream drying zone. To create at least a portion of the steam for the preceding drying zone, condensate and/or fresh water occurring in the drying cylinder of the downstream drying zone is heated by the hot air taken out of the hood by means of a first heat exchanger. Alternatively or additionally for creating at least a portion of the hot, moist air for the preceding drying zone, the hot air taken out of the hood guided through the first heat exchanger is fed to the preceding drying zone.Type: ApplicationFiled: August 10, 2011Publication date: January 5, 2012Inventors: Thomas Scherb, Joao V. Boechat
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Patent number: 8080132Abstract: The invention relates to a device (11) for stabilising the transport of a material web (12) on the upper face of an air-permeable machine clothing (10), in particular a fibrous web. The device is located on the underside of the machine clothing directly upstream of an intake nip in the direction of travel (17) of the web, said nip being formed by a roll (5) and the machine clothing, and comprises a first negative-pressure zone (19) and at least one vacuum opening (20) that faces essentially in the opposite direction to the direction of travel of the web, communicating with the first negative-pressure zone of the device. This permits the boundary layer (23) of air that is carried along by the underside of the machine clothing to be at least partially sucked from said clothing into the first negative-pressure zone.Type: GrantFiled: July 6, 2005Date of Patent: December 20, 2011Assignee: Voith Patent GmbHInventors: Thomas Scherb, Carlos Luiz Silva