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    Graphite film
    2.
    发明授权
    Graphite film 有权

    公开(公告)号：US09776927B2

    公开(公告)日：2017-10-03

    申请号：US14995058

    申请日：2016-01-13

    Applicant: Kaneka Corporation

    Inventor： Yusuke Ohta ,  Makoto Mishiro ,  Takashi Inada ,  Yasushi Nishikawa

    IPC: B32B9/00 ,  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.

    Method for manufacturing carbonaceous film and graphite film obtained thereby
    4.
    发明授权
    Method for manufacturing carbonaceous film and graphite film obtained thereby 有权
    制造由此得到的碳膜和石墨膜的方法

    公开(公告)号：US09512005B2

    公开(公告)日：2016-12-06

    申请号：US14478999

    申请日：2014-09-05

    Applicant: KANEKA CORPORATION

    Inventor： Takashi Inada ,  Yasushi Nishikawa ,  Makoto Mishiro

    IPC: C01B31/02 ,  C01B31/04

    CPC classification number: C01B31/02 ,  C01B32/05 ,  C01B32/20

    Abstract: In a method for producing a carbonaceous film in which a polymer film is wrapped around a core and is subjected to a heat treatment, material film surfaces during the carbonization step are prevented from fusion, whereby a long carbonaceous having a large area film is obtained.Fusion can be prevented by subjecting a polymer film to a heat treatment under a reduced pressure, and under a reduced pressure while allowing an inert gas to flow. The range of the pressure reduction is preferably −0.08 MPa to −0.01 kPa. It is preferred to carry out carbonization with the pressure reduced in the range of from −0.08 MPa to −0.01 kPa while allowing an inert gas to flow. In addition, the polymer film wrapped around the core is placed in an outer casing, and provided that a value derived by dividing (internal diameter of the outer casing−diameter of the core) by 2 is designated as “a” (mm), and a thickness of wrapping of the polymer film is designated as “b” (mm), a value (b/a) derived by dividing the “b” by the “a” is set to fall within the range of from 0.2 to 0.9.

    Abstract translation: 可以通过使聚合物膜在减压下进行热处理，并在减压下同时允许惰性气体流动来防止熔融。 减压的范围优选为-0.08MPa〜-0.01kPa。 优选在惰性气体流动的同时，将压力降低至-0.08MPa至-0.01kPa的压力进行碳化。 此外，包裹在芯体上的聚合物膜被放置在外壳中，并且将通过将芯部的外壳直径的内径除以2得到的值被指定为“a”（mm） 将聚合物膜的包裹厚度设为“b”（mm），将“b”除以“a”得到的值（b / a）设定为0.2〜0.9的范围 。

    Method for improving the flatness of graphite film, graphite film, and method for producing same
    5.
    发明授权
    Method for improving the flatness of graphite film, graphite film, and method for producing same 有权

    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.

    METHOD FOR PRODUCING GRAPHITE FILM
    7.
    发明申请
    METHOD FOR PRODUCING GRAPHITE FILM 有权
    生产石墨膜的方法

    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。

    GRAPHITE FILM
    8.
    发明申请
    GRAPHITE FILM 有权
    石墨膜

    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。

    Process for producing graphite film
    9.
    发明授权
    Process for producing graphite film 有权

    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

    IPC: B01J6/00 ,  C01B31/04

    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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