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Title:
DIELECTRIC MATERIAL SHEET AND PROCESS FOR PRODUCTION THEREOF, AND ELECTROMAGNETIC WAVE ABSORBER
Document Type and Number:
WIPO Patent Application WO/2011/149039
Kind Code:
A1
Abstract:
Disclosed is a dielectric material sheet which comprises a 5-30 μm thick sheet formed by drying a coating film produced from a coating solution which comprises a resin and a natural graphite powder having an average particle diameter of 10 μm or less. Preferably, the dielectric material sheet is produced from a coating solution which comprises a resin, a natural graphite powder having an average particle diameter of 10 μm or less and a solvent, wherein the ratio of the content of the natural graphite powder to the content of the resin is more than 5 vol% and not more than 20 vol% and the total content of the resin and the natural graphite powder is 10 to 55 wt% in the coating solution.

Inventors:
WANO, Takashi (1-2 Shimohozumi 1-chome, Ibaraki-sh, Osaka 80, 〒5678680, JP)
和野 隆司 (〒80 大阪府茨木市下穂積1丁目1番2号 日東電工株式会社内 Osaka, 〒5678680, JP)
TADA, Masataka (1-2 Shimohozumi 1-chome, Ibaraki-sh, Osaka 80, 〒5678680, JP)
多田 雅孝 (〒80 大阪府茨木市下穂積1丁目1番2号 日東電工株式会社内 Osaka, 〒5678680, JP)
FUKUDA, Yuuki (1-2 Shimohozumi 1-chome, Ibaraki-sh, Osaka 80, 〒5678680, JP)
Application Number:
JP2011/062166
Publication Date:
December 01, 2011
Filing Date:
May 27, 2011
Export Citation:
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Assignee:
NITTO DENKO CORPORATION (1-2 Shimohozumi 1-chome, Ibaraki-shi Osaka, 80, 〒5678680, JP)
日東電工株式会社 (〒80 大阪府茨木市下穂積1丁目1番2号 Osaka, 〒5678680, JP)
WANO, Takashi (1-2 Shimohozumi 1-chome, Ibaraki-sh, Osaka 80, 〒5678680, JP)
和野 隆司 (〒80 大阪府茨木市下穂積1丁目1番2号 日東電工株式会社内 Osaka, 〒5678680, JP)
TADA, Masataka (1-2 Shimohozumi 1-chome, Ibaraki-sh, Osaka 80, 〒5678680, JP)
多田 雅孝 (〒80 大阪府茨木市下穂積1丁目1番2号 日東電工株式会社内 Osaka, 〒5678680, JP)
International Classes:
H05K9/00; B32B27/18; C08J5/18; C08K3/04; C08L101/00
Attorney, Agent or Firm:
TAKASHIMA, Hajime (Meiji Yasuda Seimei Osaka Midosuji Bldg, 1-1 Fushimimachi 4-chome, Chuo-ku, Osaka-sh, Osaka 44, 〒5410044, JP)
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Claims: