| 摘要 |
PROBLEM TO BE SOLVED: To provide mica insulating material with efficient heat dissipation, which is difficult to break when wound and easy to manufacture, especially as material for miniaturized coils with high performance by using woven glass fabric as backing material, and to provide an insulated coil in which the mica insulating material is used. SOLUTION: In a mica substrate sheet body comprising backing material, a mica layer containing mica, an adhesive layer for joining the backing material and the mica layer, and a heat conductive layer, containing mineral powder with higher heat conductivity than mica, woven glass fabric is used as the backing material. the woven glass fabric being filled with filler containing mineral powder, or the heat conduction layer is provided for the mica layer. The above-mentioned purpose can be achieved by the coil insulated with the sheet.
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