Tokin Corporation

Keitaro Tanno

Kenichi Chatani

Shun Mikoshiba

A forming method of a composite magnetic sheet. The forming method comprises a preparing step, a forming step and a heat-treating step. In the preparing step, magnetic slurry is prepared by mixing at least a soft magnetic powder having a flat shape, a first resin having a solid component and a second resin having a solid component, weight loss of the solid component of the first resin being 4.0% or less at 220&#xb0; C., weight loss of the solid component of the second resin being 5.0% or more at 220&#xb0; C. In the forming step, the magnetic slurry is formed into an intermediate body having a sheet-like shape. In the heat-treating step, the intermediate body is heat-treated at a heat-treatment temperature between 220&#xb0; C. and 400&#xb0; C. (both inclusive).

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Tokyo, Japan

Keitaro Tanno