Entry sheet for drilling and method for drilling processing using same

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United States of America Patent

PATENT NO 10478991
APP PUB NO 20180036898A1
SERIAL NO

15555849

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Abstract

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An entry sheet for drilling comprising: a metallic foil; and a layer of a resin composition, the layer formed on the metallic foil without interposing an adhesion layer, wherein the surface of the layer of the resin composition, the surface being in contact with the metallic foil, has a dispersion term γSD of surface free energy in a range from 27.0 to 37.0 mJ/m2 and a polar term γSP of the surface free energy in a range from 0 to 5.0 mJ/m2.

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Patent Owner(s)

Patent OwnerAddress
MITSUBISHI GAS CHEMICAL COMPANY INCMITSUBISHI BUILDING 5-2 MARUNOUCHI 2-CHOME CHIYODA-KU TOKYO 100-8324

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kamei, Takayuki Yamagata, JP 18 323
Matsuyama, Yousuke Yamagata, JP 18 61
Ogashiwa, Takaaki Yamagata, JP 32 83

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