Sheet-like soft-magnetic material and production method thereof

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United States of America Patent

PATENT NO 8123972
APP PUB NO 20100001226A1
SERIAL NO

12311248

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The present invention is to impart, to a sheet-like soft magnetic material, a configuration in which sheet thickness change is suppressed and in which fluctuation in magnetic permeability is small even under a high-temperature or a high-temperature, high-humidity environment, even when a plurality of thin curable soft magnetic sheets produced by a coating method are laminated. The sheet-like soft magnetic material is formed from a soft magnetic composition which is formed by mixing at least a flat soft magnetic powder, an acrylic rubber, an epoxy resin, a curing agent for the epoxy resin, and a solvent. The flat soft magnetic powder is arranged in an in-plane direction of the sheet-like soft magnetic material. An acrylic rubber having a glycidyl group is used for the acrylic rubber. The weight ratio of the flat soft magnetic powder with respect to the total amount of the acrylic rubber, the epoxy resin, and the curing agent for the epoxy resin is 3.7 to 5.8.

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Patent Owner(s)

Patent OwnerAddress
SONY CORPORATIONTOKYO

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Aramaki, Keisuke Tochigi, JP 47 231
Sekiguchi, Morio Tochigi, JP 13 59
Sugita, Junichiro Tochigi, JP 11 55

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