Copper foil provided with carrier foil, manufacturing method of the copper foil provided with carrier foil, and copper clad laminate for laser drilling manufactured by using the copper foil provided with carrier foil

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United States of America Patent

PATENT NO 10212814
APP PUB NO 20150044492A1
SERIAL NO

14381367

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Abstract

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An object of the present invention is to improve the laser drilling performance of a copper clad laminate whose black-oxide treated surface is used as a laser drilled surface. To achieve the object, a copper foil provided with a carrier foil 1 comprising a layer structure of the carrier foil 2/the releasing layer 3/the bulk copper layer 4 characterized in that metal element-containing particles 5 are disposed between the releasing layer 3 and the bulk copper layer 4 is employed. If the present copper foil provided with a carrier foil is used, a black-oxide treated layer having a color tone excellent in the laser drilling performance can be formed on the surface of the bulk copper layer in the copper clad laminate manufactured.

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Patent Owner(s)

Patent OwnerAddress
MITSUI MINING & SMELTING CO LTD1-11-1 OSAKI SHINAGAWA-KU TOKYO 141-8584

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Yoshikawa, Kazuhiro Saitama, JP 118 1513

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