公开(公告)号：US10121590B2

公开(公告)日：2018-11-06

申请号：US15619268

申请日：2017-06-09

Applicant: CKD Corporation

Inventor： Akihiro Ito ,  Masayuki Kouketsu ,  Takashi Yamaguchi ,  Takeshi Fukuda

IPC: H01F5/00 ,  H01F41/12 ,  H01F5/06 ,  H01F7/08 ,  H01F27/28 ,  H01F27/32 ,  H01F41/04 ,  H01F7/06

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.