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公开(公告)号：US09637386B2
公开(公告)日：2017-05-02
申请号：US15362349
申请日：2016-11-28
Applicant: KANEKA CORPORATION
Inventor： Yusuke Ohta , Takashi Inada , Makoto Mishiro , Yasushi Nishikawa
CPC classification number: C01B31/04 , C04B35/522 , C04B35/524 , C04B35/62218 , C04B35/63444 , C08G69/26 , C08G69/28 , C08L77/06
Abstract: A graphite film which is low in graphite dust generation can be produced by properly selecting acid dianhydride and diamine which constitute a polyimide film, which polyimide film is a raw material of the graphite film. Specifically, the graphite film which is low in graphite dust generation can be obtained if (1) the acid dianhydride is PMDA and the diamine has a molar ratio of ODA/PDA in a range of 100:0 to 80:20, or (2) the acid dianhydride has a molar ratio of PMDA/BPDA in a range of 80:20 to 50:50, and the diamine has a molar ratio of ODA/PDA in a range of 30:70 to 90:10.
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公开(公告)号：US09500418B2
公开(公告)日：2016-11-22
申请号：US14372343
申请日：2013-01-11
Applicant: KANEKA CORPORATION
Inventor： Makoto Kutsumizu , Yasushi Nishikawa , Yusuke Ohta , Satoshi Katayama , Takashi Inada , Takashi Inada
CPC classification number: F28F21/02 , B23B35/00 , B23K26/384 , C01B32/20 , C23C28/00 , F28F21/089 , Y10T428/12361 , Y10T428/24273 , Y10T428/24339 , Y10T428/30
Abstract: There is provided a graphite composite film including a graphite film and a metal layer formed on a surface of the graphite film, in which peeling-off of the metal layer from the graphite film is suppressed. More specifically, the graphite composite film includes a graphite film and a metal layer formed on at least one side of the graphite film, wherein the graphite film has a plurality of through holes formed therein, a metal layer is formed also inside the through holes so as to be connected to the metal layer formed on a surface of the graphite film, the metal layer inside the through holes is formed continuously from the one side to an opposite side of the graphite film, and a distance between outer diameters of the through holes is 0.6 mm or less and a ratio of an area of metal inside the through holes to an area of the graphite composite film is 1.4% or more.
Abstract translation: 提供了一种石墨复合膜，其包括石墨膜和形成在石墨膜的表面上的金属层，其中金属层与石墨膜的剥离被抑制。 更具体地，石墨复合膜包括石墨膜和形成在石墨膜的至少一侧上的金属层，其中石墨膜具有形成在其中的多个通孔，金属层也形成在通孔内，因此 为了连接到形成在石墨膜的表面上的金属层，通孔内部的金属层从石墨膜的一侧到相对侧连续地形成，并且通孔的外径之间的距离 为0.6mm以下，通孔内的金属面积与石墨复合膜的面积的比例为1.4％以上。
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公开(公告)号：US20150024231A1
公开(公告)日：2015-01-22
申请号：US14372343
申请日：2013-11-11
Applicant: KANEKA CORPORATION
Inventor： Makoto Kutsumizu , Yasushi Nishikawa , Yusuke Ohta , Satoshi Katayama , Takashi Inada , Takashi Inada
CPC classification number: F28F21/02 , B23B35/00 , B23K26/384 , C01B32/20 , C23C28/00 , F28F21/089 , Y10T428/12361 , Y10T428/24273 , Y10T428/24339 , Y10T428/30
Abstract: There is provided a graphite composite film including a graphite film and a metal layer formed on a surface of the graphite film, in which peeling-off of the metal layer from the graphite film is suppressed. More specifically, the graphite composite film includes a graphite film and a metal layer formed on at least one side of the graphite film, wherein the graphite film has a plurality of through holes formed therein, a metal layer is formed also inside the through holes so as to be connected to the metal layer formed on a surface of the graphite film, the metal layer inside the through holes is formed continuously from the one side to an opposite side of the graphite film, and a distance between outer diameters of the through holes is 0.6 mm or less and a ratio of an area of metal inside the through holes to an area of the graphite composite film is 1.4% or more.
Abstract translation: 提供了一种石墨复合膜，其包括石墨膜和形成在石墨膜的表面上的金属层，其中金属层与石墨膜的剥离被抑制。 更具体地，石墨复合膜包括石墨膜和形成在石墨膜的至少一侧上的金属层，其中石墨膜具有形成在其中的多个通孔，金属层也形成在通孔内，因此 为了连接到形成在石墨膜的表面上的金属层，通孔内部的金属层从石墨膜的一侧到相对侧连续地形成，并且通孔的外径之间的距离 为0.6mm以下，通孔内的金属面积与石墨复合膜的面积的比例为1.4％以上。
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14.发明授权公开(公告)号：US10377635B2
公开(公告)日：2019-08-13
申请号：US14515200
申请日：2014-10-15
Applicant: KANEKA CORPORATION
Inventor： Yusuke Ohta , Takashi Inada , Makoto Mishiro , Takashi Inada , Yasushi Nishikawa
IPC: C01B32/20
Abstract: When a raw material graphite film bad in flatness is laminated onto another material, creases and other defects may be caused. In particular, when a graphite film having a large area is laminated, defects such as creases may be often caused. In order to solve such defects, a flatness correction treatment step is performed wherein a raw material graphite film is subjected to heat treatment up to 2000° C. or higher while a pressure is applied thereto. This flatness correction treatment gives a graphite film good in flatness. Furthermore, when the flatness of the raw material graphite film is corrected by use of a thermal expansion of a core, a graphite film small in sagging can be obtained.
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公开(公告)号：US09878521B2
公开(公告)日：2018-01-30
申请号：US14765053
申请日：2014-01-30
Applicant: KANEKA CORPORATION
Inventor： Makoto Kutsumizu , Yusuke Ohta , Satoshi Katayama , Takashi Inada , Motoaki Kobayashi , Yasushi Nishikawa
IPC: B32B9/00 , B32B7/02 , B32B9/04 , B32B38/00 , B29C45/14 , B29C45/00 , B32B27/30 , B32B27/42 , B32B27/38 , B29K707/04 , C08J5/04 , B29L9/00
CPC classification number: B32B9/007 , B29C45/0005 , B29C45/14 , B29C45/14811 , B29C2045/0012 , B29K2707/04 , B29L2009/00 , B32B7/02 , B32B9/04 , B32B9/045 , B32B27/308 , B32B27/38 , B32B27/42 , B32B38/00 , B32B2307/51 , B32B2457/00 , C08J5/042
Abstract: In order to prevent positional displacement of a graphite sheet laminate during production of a resin molded product obtained by integrally molding the graphite sheet laminate and a resin, the present invention uses a graphite sheet laminate having a structure in which a first fixing layer having a modulus of elasticity of not less than 7.0×104 Pa and not more than 5.0×107 Pa at 250° C. is in contact with a graphite sheet on at least one of principal surfaces of the graphite sheet.
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Patent Agency Ranking
公开(公告)号：US20170106641A1
公开(公告)日：2017-04-20
申请号：US14971765
申请日：2015-12-16
Applicant: Kaneka Corporation
Inventor： Yusuke Ohta , Takashi lnada , Makoto Mishiro , Yasushi Nishikawa , Takashi lnada
CPC classification number: B32B37/20 , B32B7/12 , B32B9/007 , B32B37/0053 , B32B37/12 , B32B38/10 , B32B38/18 , B32B2250/02 , B32B2313/04 , C01B32/20 , C04B35/522 , C04B35/524 , C04B35/62218 , C04B35/6269 , C04B35/63468 , C04B2235/604 , C04B2235/6581 , C04B2235/96 , C04B2235/9638
Abstract: A graphite film showing an extremely low average tearing force is more likely to suffer from various kinds of defects, such as splitting, winding deviation, wrinkling, and poor dimensional accuracy, in a step of producing the graphite film and in a step of processing the graphite film. However, these defects can be prevented by using a graphite film that satisfies the following requirements: 1) having an average tearing force of not more than 0.08 N as determined by Trouser tear method in accordance with JIS K7128; and 2) having sag of not less than 5 mm and not greater than 80 mm as determined by a method of film windability evaluation in accordance with JIS C2151.
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公开(公告)号：US20160194250A1
公开(公告)日：2016-07-07
申请号：US14995016
申请日：2016-01-13
Applicant: Kaneka Corporation
Inventor： Yusuke Ohta , Makoto Mishiro , Takashi lnada , Yasushi Nishikawa
IPC: C04B35/524 , C01B31/04
CPC classification number: C04B35/524 , C01B32/19 , C01B32/20 , C01B32/205 , C01B32/225 , Y10T428/30
Abstract: Provided is a long and large-area graphite film having improved thermal diffusivity and flex resistance, and accompanied by ameliorated ruffling. According to a method for producing a graphite film, in which graphitization of a heat-treated film consisting of a carbonized polymer film is carried out in a state being wrapped around an internal core, the method being characterized in that a heat treatment is executed by controlling distance(s) between the internal core and the film, and/or between the layers of the film, a graphite film accompanied by significantly ameliorated ruffling can be obtained.
Abstract translation: 提供了具有改善的热扩散率和抗弯曲性的长且大面积的石墨膜，并伴随着改善的褶皱。 根据石墨膜的制造方法，其特征在于，在由碳化聚合物膜构成的热处理膜的石墨化被包裹在内部芯部的状态下进行，其特征在于，通过以下方式进行热处理： 可以获得控制内芯和薄膜之间和/或薄膜之间的距离，可以获得伴随显着改善的褶皱的石墨薄膜。
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公开(公告)号：US20160194204A1
公开(公告)日：2016-07-07
申请号：US14995058
申请日：2016-01-13
Applicant: Kaneka Corporation
Inventor： Yusuke Ohta , Makoto Mishiro , Takashi lnada , Yasushi Nishikawa
IPC: C01B31/04
CPC classification number: C04B35/524 , C01B32/19 , C01B32/20 , C01B32/205 , C01B32/225 , Y10T428/30
Abstract: Provided is a long and large-area graphite film having improved thermal diffusivity and flex resistance, and accompanied by ameliorated ruffling. According to a method for producing a graphite film, in which graphitization of a heat-treated film consisting of a carbonized polymer film is carried out in a state being wrapped around an internal core, the method being characterized in that a heat treatment is executed by controlling distance(s) between the internal core and the film, and/or between the layers of the film, a graphite film accompanied by significantly ameliorated ruffling can be obtained.
Abstract translation: 提供了具有改善的热扩散率和抗弯曲性的长且大面积的石墨膜，并伴随着改善的褶皱。 根据石墨膜的制造方法，其特征在于，在由碳化聚合物膜构成的热处理膜的石墨化被包裹在内部芯部的状态下进行，其特征在于，通过以下方式进行热处理： 可以获得控制内芯和薄膜之间和/或薄膜之间的距离，可以获得伴随显着改善的褶皱的石墨薄膜。
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公开(公告)号：US09193592B2
公开(公告)日：2015-11-24
申请号：US14703563
申请日：2015-05-04
Applicant: KANEKA CORPORATION
Inventor： Yusuke Ohta , Takashi Inada , Makoto Mishiro , Yasushi Nishikawa
CPC classification number: B01J6/008 , C01B32/20 , C01P2006/60
Abstract: The present invention performs special heat treatment on a polymer film in a temperature range from (i) a lower limit to temperature rise being equal to or higher than a starting temperature of thermal decomposition of the polymer film, i.e., which is a temperature observed at an early stage of the thermal decomposition of the polymer film, to (ii) an upper limit to temperature rise being equal to or lower than an intermediate temperature of thermal decomposition of the polymer film. This reduces foaming in the film during graphitization treatment following the special heat treatment. Thus, even with a higher heating rate for graphitization, it is possible to produce a graphite film having good quality.
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公开(公告)号：US20190039845A1
公开(公告)日：2019-02-07
申请号：US16156099
申请日：2018-10-10
Applicant: KANEKA CORPORATION
Inventor： Satoshi Katayama , Yusuke Ohta , Naoshi Marutani , Yasushi Nishikawa
Abstract: A rolled graphite sheet includes a rod-shaped body and a graphite sheet having a length of 1 m or more and a width shorter than the length. The graphite sheet is wound around the rod-shaped body and is rolled in a length direction. When a length direction-end of the graphite sheet is pulled with a force of 1.5 N/cm in a direction parallel to a tangent of a cross-sectional circle of the rolled graphite sheet while fixing the rod-shaped body, the end moves 5 mm or less in the direction parallel to the tangent of the circle.
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