Patents by Inventor Hiraku Sawada
Hiraku Sawada 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: 10619299Abstract: To provide a contamination inhibitor composition capable of effectively inhibiting pitch contamination on a dry part. The present invention is a contamination inhibitor composition 1 which is imparted to a dry part D of a paper-making machine, and comprising a film forming agent and a gelling agent, wherein the film forming agent is an emulsion consisting of water, a modified silicone and an emulsifier and the gelling agent is a compound represented by the following formula (1): [in the formula (1), R1 each independently represents a hydrogen atom, a hydroxyl group, a carboxyl group or a hydrocarbon group optionally having a substituent having 1 to 3 carbon atoms, R2 each independently represents a hydroxyl group or a carboxyl group, R3 represents a hydrogen atom, a hydroxyl group or a carboxyl group, m is an integer of 1 to 5, and n is an integer of 0 to 5.].Type: GrantFiled: March 25, 2016Date of Patent: April 14, 2020Assignee: MAINTECH CO., LTD.Inventors: Hiroshi Sekiya, Daisuke Kobayashi, Hiraku Sawada, Shinichiro Ogoda, Kazuyuki Yusa
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Publication number: 20190211504Abstract: To provide a contamination-preventing agent composition and a contamination preventing method which even if the composition is imparted only to a dryer on the upstream side, a sufficient amount of the composition can be imparted to a dryer on the downstream side via a wet paper, and pitch contamination of a plurality of dryers can be prevented sufficiently as a whole. The present invention is a contamination-preventing agent composition imparted to dryers D1 to D8 in a dry part D of a paper machine and comprising an emulsion, a re-transfer agent and water, wherein the re-transfer agent has a cloud point of 55° C. or higher and an HLB value of 8 to 15, and preferably a contamination-preventing agent composition wherein the dynamic surface tension value at a lifetime of 100 ms by a maximum bubble pressure method is 65 mN/m or less.Type: ApplicationFiled: September 29, 2016Publication date: July 11, 2019Inventors: Hiroshi SEKIYA, Daisuke KOBAYASHI, Hiraku SAWADA, Kazuyuki YUSA
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Publication number: 20180100270Abstract: To provide a contamination inhibitor composition capable of effectively inhibiting pitch contamination on a dry part. The present invention is a contamination inhibitor composition 1 which is imparted to a dry part D of a paper-making machine, and comprising a film forming agent and a gelling agent, wherein the film forming agent is an emulsion consisting of water, a modified silicone and an emulsifier and the gelling agent is a compound represented by the following formula (1): [in the formula (1), R1 each independently represents a hydrogen atom, a hydroxyl group, a carboxyl group or a hydrocarbon group optionally having a substituent having 1 to 3 carbon atoms, R2 each independently represents a hydroxyl group or a carboxyl group, R3 represents a hydrogen atom, a hydroxyl group or a carboxyl group, m is an integer of 1 to 5, and n is an integer of 0 to 5.].Type: ApplicationFiled: March 25, 2016Publication date: April 12, 2018Applicant: MAINTECH CO., LTD.Inventors: Hiroshi SEKIYA, Daisuke KOBAYASHI, Hiraku SAWADA, Shinichiro OGODA, Kazuyuki YUSA
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Patent number: 9937521Abstract: [Problem] To provide a method for spraying a chemical solution that makes it possible to uniformly apply a chemical solution onto a moving body and that exhibits excellent spraying efficiency. [Solution] The present invention is directed to a method for spraying a chemical solution in which, in a dry part D of a paper-making machine, a chemical solution is continuously sprayed onto a moving body that guides wet paper X, while a nozzle device S is reciprocating in directions orthogonal to a moving direction of the moving body with the moving body in motion, wherein: the moving body is a cylindrical dryer roller D1 or an endless canvas K1; and a travel distance H that the nozzle device S moves during a single rotation of the moving body and a width W of a sprayed area that is formed on the moving body by the nozzle device S satisfy the relationship represented by the following expression: 0.5?H/W?20.Type: GrantFiled: March 4, 2014Date of Patent: April 10, 2018Assignee: MAINTECH CO., LTD.Inventors: Hiroshi Sekiya, Daisuke Kobayashi, Hideaki Mori, Hiraku Sawada, Tomohiko Nagatsuka
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Patent number: 9458572Abstract: [Object] To provide an anti-soiling agent compound that can sufficiently prevents adhesion of pitch to a dry part region. [Solution] The present invention provides an anti-soiling agent composition is provided with: a low molecular polysiloxane compound represented by the following formula (1); and a high molecular polysiloxane compound represented by the following formula (2), and characterized in that the number of modified groups per low molecular polysiloxane compound is in a range from 0.1 to 3, the number of modified groups per high molecular polysiloxane compound is in a range from 1.Type: GrantFiled: August 13, 2015Date of Patent: October 4, 2016Assignee: MAINTECH CO., LTD.Inventors: Hiroshi Sekiya, Hiraku Sawada, Daisuke Kobayashi
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Publication number: 20160008845Abstract: [Problem] To provide a method for spraying a chemical solution that makes it possible to uniformly apply a chemical solution onto a moving body and that exhibits excellent spraying efficiency. [Solution] The present invention is directed to a method for spraying a chemical solution in which, in a dry part D of a paper-making machine, a chemical solution is continuously sprayed onto a moving body that guides wet paper X, while a nozzle device S is reciprocating in directions orthogonal to a moving direction of the moving body with the moving body in motion, wherein: the moving body is a cylindrical dryer roller D1 or an endless canvas K1; and a travel distance H that the nozzle device S moves during a single rotation of the moving body and a width W of a sprayed area that is formed on the moving body by the nozzle device S satisfy the relationship represented by the following expression: 0.5?H/W?20.Type: ApplicationFiled: March 4, 2014Publication date: January 14, 2016Applicant: Maintech Co., Ltd.Inventors: Hiroshi SEKIYA, Daisuke KOBAYASHI, Hideaki MORI, Hiraku SAWADA, Tomohiko NAGATSUKA
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Publication number: 20150345080Abstract: [Object] To provide an anti-soiling agent compound that can sufficiently prevents adhesion of pitch to a dry part region. [Solution] The present invention provides an anti-soiling agent composition is provided with: a low molecular polysiloxane compound represented by the following formula (1); and a high molecular polysiloxane compound represented by the following formula (2), and characterized in that the number of modified groups per low molecular polysiloxane compound is in a range from 0.1 to 3, the number of modified groups per high molecular polysiloxane compound is in a range from 1.Type: ApplicationFiled: August 13, 2015Publication date: December 3, 2015Inventors: Hiroshi SEKIYA, Hiraku SAWADA, Daisuke KOBAYASHI
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Patent number: 9005394Abstract: [Object] To provide an anti-soiling agent compound that can sufficiently prevents adhesion of pitch to a dry part region. [Solution] The present invention provides an anti-soiling agent composition for preventing pitch contamination in a dry part of a paper-making process, and the composition has a polysiloxane compound represented by the following formula (1), wherein the number of amino-modified groups per molecule of the polysiloxane compound is in a range from 0.5 to 5. [wherein, a substituent R1 represents a methyl group or an amino-modified group represented by the following formula (2), and the number n of repeating siloxane units represents an integer in a range from 50 to 1000, and wherein, each of a substituent R2 and a substituent R3 independently represents an alkylene group having carbon atoms of 1 to 6, and the number m of repeating amino-alkylene units represents an integer in a range from 0 to 2].Type: GrantFiled: June 10, 2011Date of Patent: April 14, 2015Assignee: Maintech Co., Ltd.Inventors: Hiroshi Sekiya, Hiraku Sawada
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Patent number: 8883890Abstract: A crepe agent composition that forms a layer having excellent durability and a method for producing a crepe paper using the same. The crepe agent composition is to be applied to a surface of a cylindrical dryer, and contains an inorganic solid lubricant, a dispersant for dispersing the inorganic solid lubricant, a thermosetting polymer for fixing the inorganic solid lubricant to the surface of the cylindrical dryer, and water as a solvent, the inorganic solid lubricant having a particle diameter of 0.5 to 20 ?m.Type: GrantFiled: October 16, 2009Date of Patent: November 11, 2014Assignee: Maintech Co., Ltd.Inventors: Hiroshi Sekiya, Daisuke Kurihara, Hiraku Sawada, Masayuki Serizawa
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Publication number: 20140206805Abstract: [Object] To provide an anti-soiling agent compound that can sufficiently prevents adhesion of pitch to a dry part region. [Solution] The present invention provides an anti-soiling agent composition for preventing pitch contamination in a dry part of a paper-making process, and the composition has a polysiloxane compound represented by the following formula (1), wherein the number of amino-modified groups per molecule of the polysiloxane compound is in a range from 0.5 to 5. [wherein, a substituent R1 represents a methyl group or an amino-modified group represented by the following formula (2), and the number n of repeating siloxane units represents an integer in a range from 50 to 1000, and wherein, each of a substituent R2 and a substituent R3 independently represents an alkylene group having carbon atoms of 1 to 6, and the number m of repeating amino-alkylene units represents an integer in a range from 0 to 2].Type: ApplicationFiled: June 10, 2011Publication date: July 24, 2014Applicant: MAINTECH CO., LTD.Inventors: Hiroshi Sekiya, Hiraku Sawada
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Publication number: 20140128521Abstract: [Object] To provide an anti-soiling agent compound that can sufficiently prevents adhesion of pitch to a dry part region. [Solution] The present invention provides an anti-soiling agent composition is provided with: a low molecular polysiloxane compound represented by the following formula (1); and a high molecular polysiloxane compound represented by the following formula (2), and characterized in that the number of modified groups per low molecular polysiloxane compound is in a range from 0.1 to 3, the number of modified groups per high molecular polysiloxane compound is in a range from 1.Type: ApplicationFiled: July 4, 2011Publication date: May 8, 2014Applicant: MAINTECH CO., LTD.Inventors: Hiroshi Sekiya, Hiraku Sawada, Daisuke Kobayashi
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Publication number: 20110198776Abstract: The present invention provides a crepe agent composition that forms a layer having excellent durability and a method for producing a crepe paper using the same. The crepe agent composition is to be applied to a surface of a cylindrical dryer, and comprises an inorganic solid lubricant, a dispersant for dispersing the inorganic solid lubricant, a thermosetting polymer for fixing the inorganic solid lubricant to the surface of the cylindrical dryer, and water that is a solvent, the inorganic solid lubricant having a particle diameter of 0.5 to 20 ?m.Type: ApplicationFiled: October 16, 2009Publication date: August 18, 2011Inventors: Hiroshi Sekiya, Daisuke Kurihara, Hiraku Sawada, Masayuki Serizawa
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Publication number: 20090159229Abstract: [Problems] To provide a functional composition enable a stale paper production by being applied onto a press roll, and a method for improvement of detachability using the same. [Solutions] The present invention relates to a functional composition used by being applied onto a press roll for dehydration of a wet paper, comprising a compound expressed by the following general formula (1): STR wherein R represents an organic group which may have a substituent or a hydrogen atom, p and r each independently represent an integer of 0 to 228, and q represents an integer of 0 to 69, provided that p, q and r do not represent 0 simultaneously.Type: ApplicationFiled: December 19, 2006Publication date: June 25, 2009Inventors: Hiroshi Sekiya, Hiraku Sawada, Kanae Ichimura, Atsutoshi Kimura, Mineo Watanabe, Masato Takahashi, Masahiro Hamasaki, Seiichiro Usui