Patents by Inventor Kenro TAKIZAWA
Kenro TAKIZAWA 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: 9005500Abstract: When extrusion of a molten resin by means of an extruder is started, a simple polyetherimide resin is melt extruded from a lip portion 7a of a T-die 7, and a film of the simple polyetherimide resin is molded. The molding material is then switched to a resin composition including the polyetherimide resin and a fluorine resin and then a film of the resin composition is continuously extruded and molded from the T-die 7. Having been covered with a very thin film 8a of the simple polyetherimide resin, on a flow passage face of the lip portion 7a of the T-die 7, a resin composition layer 8b including a polyetherimide resin and a fluorine resin, which has affinity with the film 8a, is then formed at a center part.Type: GrantFiled: December 16, 2010Date of Patent: April 14, 2015Assignee: Shin-Etsu Polymer Co., Ltd.Inventors: Michimasa Ote, Takashi Gonda, Junya Ishida, Kenro Takizawa, Kazuhiro Suzuki, Yuzo Morioka
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Patent number: 8790558Abstract: A film for film capacitors having a thickness of 10 microns or less, is manufactured by the successive steps of: mixing and preparing a forming material composed of a thermoplastic resin composition; melting and extruding the forming material to a film through a T-die; pinching and cooling the film between a pressure roll and a cooling roll having a rough surface for forming a rough surface to the film, wherein the rough surface of the cooling roll has (?/Ra) of 0.2 or less, and the rough surface of the film has (?/Ra) of 0.2 or less, where (Ra) is an arithmetic average roughness defined by a method specified in JIS B 0601 2001, and (?) is a standard deviation; and rolling up the cooled film onto a winding tube in a winding unit.Type: GrantFiled: December 15, 2010Date of Patent: July 29, 2014Assignee: Shin-Etsu Polymer Co., Ltd.Inventors: Kazuhiro Suzuki, Kenro Takizawa, Masaru Yoneyama, Junya Ishida
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Publication number: 20140124975Abstract: The present invention provides a resin film for a film capacitor making it possible to obtain the excellent heat resistance, materialize a reduction in a size of the film capacitor and an increase in a capacity thereof and satisfy a reduction in a thickness of the film and a high voltage resistance thereof. In a manufacturing method in which an extruding equipment 10 is charged with a molding material 1 to extrude a film 2 for a film capacitor from a T die 20, in which the above extruded film 2 for a film capacitor is interposed between plural rolls in a receiving device 30 and cooled and in which the above cooled film 2 for a film capacitor is wound on a winding tube 42 of a winding device 40, 100 parts by mass of a polyetherimide resin is blended with 1 to 10 parts by mass of a fluorocarbon resin to prepare the molding material 1; the above molding material 1 is extruded through a filter 50 having apertures 51 which are 0.5 to 6 times or less as large as an average thickness of the film.Type: ApplicationFiled: January 9, 2014Publication date: May 8, 2014Applicant: SHIN-ETSU POLYMER CO. LTD.Inventors: Takashi Nogami, Kenro Takizawa, Kazuhiro Suzuki, Junya Ishida
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Patent number: 8715554Abstract: The present invention provides a resin film for a film capacitor making it possible to obtain the excellent heat resistance, materialize a reduction in a size of the film capacitor and an increase in a capacity thereof and satisfy a reduction in a thickness of the film and a high voltage resistance thereof. In a manufacturing method in which an extruding equipment 10 is charged with a molding material 1 to extrude a film 2 for a film capacitor from a T dice 20, in which the above extruded film 2 for a film capacitor is interposed between plural rolls in a receiving device 30 and cooled and in which the above cooled film 2 for a film capacitor is wound on a winding tube 42 of a winding device 40, 100 parts by mass of a polyetherimide resin is blended with 1 to 10 parts by mass of a fluorocarbon resin to prepare the molding material 1; the above molding material 1 is extruded through a filter 50 having apertures 51 which are 0.Type: GrantFiled: December 29, 2010Date of Patent: May 6, 2014Assignee: Shin-Etsu Polymer Co., Ltd.Inventors: Takashi Nogami, Kenro Takizawa, Kazuhiro Suzuki, Junya Ishida
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Patent number: 8524133Abstract: The present invention provides a method for manufacturing a film for a film capacitor making it possible to produce a film for a film capacitor which has a thickness of 10 ?m or less and which is excellent in a heat resistance and a voltage resistance at a high thickness accuracy by using a polyetherimide resin and provides as well a film for a film capacitor.Type: GrantFiled: November 1, 2010Date of Patent: September 3, 2013Assignee: Shin-Etsu Polymer Co., LtdInventors: Kenro Takizawa, Yuzo Morioka, Kazuhiro Suzuki, Michimasa Ote
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Publication number: 20120091622Abstract: A film for film capacitors having a thickness of 10 microns or less, is manufactured by the successive steps of: mixing and preparing a forming material composed of a thermoplastic resin composition; melting and extruding the forming material to a film through a T-die; pinching and cooling the film between a pressure roll and a cooling roll having a rough surface for forming a rough surface to the film, wherein the rough surface of the cooling roll has (?/Ra) of 0.2 or less, and the rough surface of the film has (?/Ra) of 0.2 or less, where (Ra) is an arithmetic average roughness defined by a method specified in JIS B 0601 2001, and (?) is a standard deviation; and rolling up the cooled film onto a winding tube in a winding unit.Type: ApplicationFiled: December 15, 2010Publication date: April 19, 2012Applicant: SHIN-ETSU POLYMER CO., LTDInventors: Kazuhiro SUZUKI, Kenro Takizawa, Masaru Yoneyama, Junya Ishida
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Publication number: 20120094070Abstract: A film for film capacitors having a thickness of 10 microns or less, wherein the film has surface properties of (Ra) of 0.2 microns or less, (Rz/Ra) of 10 or less and a dynamic friction coefficient of 1.5 or less, where (Ra) is an arithmetic average roughness and (Rz) is a maximum height defined both by the method specified in JIS B 0601 2001. The film can be manufactured by the successive steps of: mixing and preparing a forming material composed of a thermoplastic resin composition; melting and extruding the forming material to a film through a T-die; pinching and cooling the film between a pressure roll and a cooling roll having a rough surface for forming a rough surface to the film; and rolling up the cooled film onto a winding tube in a winding unit.Type: ApplicationFiled: December 20, 2010Publication date: April 19, 2012Applicant: SHIN-ETSU POLYMER CO., LTD.Inventors: Kazuhiro SUZUKI, Kenro Takizawa, Masaru Yoneyama, Junya Ishida
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Publication number: 20110217509Abstract: The present invention provides a resin film for a film capacitor making it possible to obtain the excellent heat resistance, materialize a reduction in a size of the film capacitor and an increase in a capacity thereof and satisfy a reduction in a thickness of the film and a high voltage resistance thereof. In a manufacturing method in which an extruding equipment 10 is charged with a molding material 1 to extrude a film 2 for a film capacitor from a T dice 20, in which the above extruded film 2 for a film capacitor is interposed between plural rolls in a receiving device 30 and cooled and in which the above cooled film 2 for a film capacitor is wound on a winding tube 42 of a winding device 40, 100 parts by mass of a polyetherimide resin is blended with 1 to 10 parts by mass of a fluorocarbon resin to prepare the molding material 1; the above molding material 1 is extruded through a filter 50 having apertures 51 which are 0.Type: ApplicationFiled: December 29, 2010Publication date: September 8, 2011Applicant: SHIN-ETSU POLYMER CO., LTD.Inventors: Takashi NOGAMI, Kenro TAKIZAWA, Kazuhiro SUZUKI, Junya ISHIDA
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Publication number: 20110151187Abstract: When extrusion of a molten resin by means of an extruder is started, a simple polyetherimide resin is melt extruded from a lip portion 7a of a T-die 7, and a film of the simple polyetherimide resin is molded. The molding material is then switched to a resin composition including the polyetherimide resin and a fluorine resin and then a film of the resin composition is continuously extruded and molded from the T-die 7. Having been covered with a very thin film 8a of the simple polyetherimide resin, on a flow passage face of the lip portion 7a of the T-die 7, a resin composition layer 8b including a polyetherimide resin and a fluorine resin, which has affinity with the film 8a, is then formed at a center part.Type: ApplicationFiled: December 16, 2010Publication date: June 23, 2011Applicant: SHIN-ETSU POLYMER CO., LTD.Inventors: Michimasa OTE, Takashi Gonda, Junya Ishida, Kenro Takizawa, Kazuhiro Suzuki, Yuzo Morioka
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Publication number: 20110117348Abstract: The present invention provides a method for manufacturing a film for a film capacitor making it possible to produce a film for a film capacitor which has a thickness of 10 ?m or less and which is excellent in a heat resistance and a voltage resistance at a high thickness accuracy by using a polyetherimide resin and provides as well a film for a film capacitor.Type: ApplicationFiled: November 1, 2010Publication date: May 19, 2011Applicant: SHIN-ETSU POLYMER CO., LTD.Inventors: Kenro TAKIZAWA, Yuzo Morioka, Kazuhiro Suzuki, Michimasa Ote