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    MOLD RELEASE SHEET
    4.
    发明公开
    MOLD RELEASE SHEET 审中-公开
    FORMTRENNUNGSFLÄCHENGEBILDE

    公开(公告)号：EP2055681A4

    公开(公告)日：2010-03-24

    申请号：EP07791349

    申请日：2007-07-26

    申请人： TOYO TANSO CO

    发明人： YUKI TETSUYA ,  HIROSE YOSHIAKI

    IPC分类号： C03B40/02 ,  C01B31/04 ,  C04B35/64

    CPC分类号： C03B40/02 ,  C03B19/063 ,  C03B20/00 ,  C04B35/536 ,  C04B35/62218 ,  C04B2235/604 ,  C04B2235/77 ,  C04B2235/95 ,  C04B2235/9607 ,  C04B2235/963 ,  Y02P40/57 ,  Y10T428/24355 ,  Y10T428/24942 ,  Y10T428/249921 ,  Y10T428/30

    摘要： [Problems] An object is to provide a mold release sheet, made of expanded graphite, that can achieve high product quality and that can remarkably improve the work efficiency and production yield when silicon carbide, aluminum nitride, or the like is produced by compressing. [Means for Solving the Problems] A mold release sheet (4) disposed between silica powder M and an inner face of an outer member 1b of a mold and made of expanded graphite, characterized in that: the gas permeability represented by the following equation (1) is 1.0 × 10 -4 cm 2 /s or less, Gas permeability = Q €¢ L / ”P €¢ A , where Q is the gas flow rate (Pa€¢cm 3 /s), ”P is the pressure difference (Pa) between two chambers, A is the gas transmission area (cm 2 ) of the mold release sheet, which is the area of a passage that allows the two chambers to communicate with each other, and L is the thickness (cm) of the mold release sheet.

    摘要翻译： 本发明的目的在于提供一种由膨胀石墨构成的脱模片，其能够实现高品质，并且能够通过压缩来制造碳化硅，氮化铝等时的作业效率和成品率显着提高。 用于解决课题的手段在二氧化硅粉末M与模具的外侧部件1b的内表面之间配置有由膨胀石墨构成的脱模片（4），其特征在于，气体透过率由下式 1）为1.0×10 -4 cm 2 / s或更低，气体渗透率= Q / L / L，其中Q是气体流量（Pa·cm 3 / s），“P是 A是两个腔室之间的压差（Pa），A是允许两个腔室彼此连通的通道面积的脱模片材的透气面积（cm 2），L是厚度（cm） ）的脱模片。

    EXPANDED-GRAPHITE SHEET
    5.
    发明公开
    EXPANDED-GRAPHITE SHEET 审中-公开
    膨胀石墨板

    公开(公告)号：EP2463234A4

    公开(公告)日：2015-02-18

    申请号：EP10806541

    申请日：2010-08-06

    申请人： TOYO TANSO CO

    发明人： YUKI TETSUYA ,  HIROSE YOSHIAKI

    IPC分类号： C01B31/04

    CPC分类号： C01B32/225

    摘要： An object is to provide an expanded graphite sheet at the use stage that can prevent can prevent degradation in product quality and deterioration in product yield by inhibiting the expanded graphite sheet from containing impurities even when the expanded graphite sheet is actually used. An expanded graphite sheet at the use stage in a condition in which the expanded graphite sheet is packed with a packing material and thereafter removed from the packing material, characterized in that all of the amounts of Al, B, Be, Ca, Cu, Fe, Li, Mg. Ni, S, Ti, V, and Zn as determined by an ICP emission spectroscopy method, the amounts of K and Na as determined by an atomic absorption spectrometry method, and the amount of Si as determined by an absorption spectrophotometry method are at a level less than the detection limit.