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11.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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公开(公告)号：US20170346069A1
公开(公告)日：2017-11-30
申请号：US15680360
申请日：2017-08-18
Applicant: Kaneka Corporation
Inventor： Masahiro Kojima , Satoshi Oku , Makoto Kutsumizu , Yasushi Nishikawa
CPC classification number: H01M4/0452 , B32B9/00 , C01B32/20 , C01B32/205 , C01B32/21 , C01P2006/40 , H01M4/583 , H01M4/587 , H01M4/625 , H01M4/661 , H01M4/663
Abstract: A film includes a film body including graphite, and at least one fragment including graphite and formed on one or more surfaces of the film body. The film has a water contact angle of 50 degrees or greater and a glossiness of 20 or lower.
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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：US09512007B2
公开(公告)日：2016-12-06
申请号：US14275564
申请日：2014-05-12
Applicant: KANEKA CORPORATION
Inventor： Yasushi Nishikawa , Shuhei Wakahara , Mutsuaki Murakami
CPC classification number: C01B32/20 , B32B37/1018 , B32B43/006 , B32B2313/04 , H01G11/34 , H05K9/0081 , Y02E60/13 , Y10T156/10 , Y10T428/24479 , Y10T428/24942
Abstract: In order to obtain a graphite film having an excellent thermal diffusivity, a high density, and excellent flatness without flaws, recesses and wrinkles on the surface, the process for producing a graphite film according to the present invention comprises the graphitization step for a raw material film made of a polymer film and/or a carbonized polymer film and/or the post-planar pressurization step for the film in this order to prepare a graphite film, wherein the graphitization step is a step of thermally treating two or more stacked raw material films at a highest temperature of 2,000° C. and includes a method of electrically heating the raw material films themselves and/or a method of thermally treating the films while applying pressure to the films planarly, and the post-planar pressurization step includes a method of planarly pressurizing the one raw material film or the multiple stacked raw material films after graphitization by single-plate press or vacuum press.
Abstract translation: 为了获得具有优异的热扩散率，高密度和优异的平面度的石墨膜，在表面上没有缺陷，凹陷和皱纹，根据本发明的石墨膜的制造方法包括用于原料的石墨化步骤 由此制成石墨膜，由聚合物膜和/或碳化聚合物膜制成的薄膜和/或后平面加压步骤，其中石墨化步骤是热处理两种或更多层叠原料 膜的最高温度为2000℃，并且包括对原料膜本身进行电加热的方法和/或对膜均匀加压的热处理方法，并且后平面加压步骤包括： 通过单板压机或真空压机在石墨化之后对一个原料膜或多个堆叠的原料膜进行平面加压。
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Patent Agency Ranking
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：US08865111B2
公开(公告)日：2014-10-21
申请号：US14065813
申请日：2013-10-29
Applicant: Kaneka Corporation
Inventor： Yasushi Nishikawa , Mutsuaki Murakami , Kiyokazu Akahori
IPC: C01B31/04
CPC classification number: C01B31/04 , C01B32/20 , C04B35/522 , C04B35/524 , C04B2235/656 , C04B2235/96 , C04B2235/9607 , C08G73/1053 , Y10T428/31721
Abstract: A process for producing a filmy graphite includes the steps of forming a polyimide film having a birefringence of 0.12 or more and heat-treating the polyimide film at 2,400° C. or higher.
Abstract translation: 一种薄膜状石墨的制造方法，其特征在于，形成双折射为0.12以上的聚酰亚胺膜，在该聚酰亚胺膜上进行2,400℃以上的热处理。
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公开(公告)号：US11292721B2
公开(公告)日：2022-04-05
申请号：US16483935
申请日：2018-02-05
Applicant: KANEKA CORPORATION
Inventor： Keisuke Inaba , Yusuke Ohta , Satoshi Katayama , Makoto Kutsumizu , Yasushi Nishikawa
IPC: C01B32/205 , C01B32/20
Abstract: A graphite film has a higher degree of thermal diffusion property in one in-plane direction and a method produces the graphite film. The graphite film includes a first axial direction, which is a direction having the highest thermal diffusivity in a film surface, and a second axial direction orthogonal to the first axial direction in the film surface. A value obtained by dividing the thermal diffusivity in the first axial direction by a thermal diffusivity in the second axial direction is not less than 1.020 and not more than 1.300.
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