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US 10,121,590 B2Granted
Coil sheet production method, and coil production method
AssigneeCkd Corporation
InventorsAkihiro Ito, Masayuki Kouketsu, Takashi Yamaguchi, Takeshi Fukuda
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Abstract
A method produces a coil sheet from an initial coil sheet in which a conductor layer, a thermally resistant insulating layer, a thermosetting, uncured adhesive layer, and a base layer are stacked in this order. The method includes a first cutting step of cutting the conductor layer into a predetermined shape through etching, and a second cutting step of cutting, after the first cutting step, the insulating layer and the adhesive layer into the predetermined shape through etching.
Claims11
A method of producing a coil sheet, comprising:
- providing an initial coil sheet including a conductor layer, a thermally resistant insulating layer, an uncured thermosetting adhesive layer, and a base layer stacked in this order;
- first etching the conductor layer so as to cut the conductor layer into a predetermined pattern for a coil, while the insulating layer, the uncured thermosetting adhesive layer, and the base layer remaining uncut;
- and
- after cutting the conductor layer, second etching the insulating layer and the uncured thermosetting adhesive layer into the predetermined pattern, the base layer remaining uncut.
1 more element
Dependencies are inferred from the claim text.