Entry sheet for drilling and method for drilling processing using same

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United States of America Patent

PATENT NO 10486324
APP PUB NO 20180050462A1
SERIAL NO

15553795

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Entry sheet for drilling including a metallic foil and a layer of a resin composition, the layer formed on the metallic foil without interposing an adhesion layer, in which the layer of the resin composition has a peak attributable to a carbon atom-oxygen atom double bond appearing at 1700 to 1750 cm−1 and a peak attributable to a carbon atom-oxygen atom single bond appearing at 1080 to 1300 cm−1 in infrared spectroscopy, and when the absorbance at the peak attributable to the carbon atom-oxygen atom double bond appearing at 1700 to 1750 cm−1 is represented by Abs(C═O)L, and the absorbance at the peak of the carbon atom-oxygen atom single bond appearing at 1080 to 1300 cm−1 is represented by Abs(C—O)L, the layer of the resin composition has an absorbance ratio (C) of 0.12 to 1.80, the absorbance ratio (C) represented by the following expression (1).

description='In-line Formulae' end='lead'Absorbance ratio(C)=Abs(C═O)L/Abs(C—O)L   Expression (1).description='In-line Formulae' end='tail'

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Patent Owner(s)

  • MITSUBISHI GAS CHEMICAL COMPANY INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kamei, Takayuki Yamagata, JP 18 262
Matsuyama, Yousuke Yamagata, JP 18 60
Ogashiwa, Takaaki Yamagata, JP 30 77

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