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Title:
PRESSED POWDER CORE, METHOD OF PRODUCING PRESSED POWDER CORE, ELECTRIC AND ELECTRONIC COMPONENT, AND ELECTRIC AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/198152
Kind Code:
A1
Abstract:
Provided is a pressed powder core 1 that has excellent mechanical properties and has magnetic properties which do not tend to change even when used under a high temperature environment, the pressed powder core 1 comprising a molded body 1B which includes a soft magnetic powder MM and an exterior coat 3 of the molded body 1B, wherein the exterior coat 3 includes an impregnated coating layer 4 and a powder coating film 5, and the impregnated coating layer 4 preferably comprises a thermoplastic resin including at least one of polyethersulfone, thermoplastic polyimide, and thermoplastic polyamide imide.

Inventors:
MATSUI, Masao (1-7, Yukigaya-otsukamachi, Ota-k, Tokyo 01, 〒1458501, JP)
MARUYAMA, Satoshi (1-7, Yukigaya-otsukamachi, Ota-k, Tokyo 01, 〒1458501, JP)
Application Number:
JP2018/015090
Publication Date:
October 17, 2019
Filing Date:
April 10, 2018
Export Citation:
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Assignee:
ALPS ALPINE CO., LTD. (1-7 Yukigaya-otsukamachi, Ota-ku Tokyo, 01, 〒1458501, JP)
International Classes:
H01F27/255; H01F1/26; H01F30/10; H01F37/00; H01F41/02
Domestic Patent References:
WO2008018179A12008-02-14
WO2017022227A12017-02-09
Foreign References:
JP2017041507A2017-02-23
JPH01156451A1989-06-20
JP2010118486A2010-05-27
Other References:
MIHARA, TAKASHI ET AL.: "Thermal and mechanical properties of epoxy curable solvent soluble imide resins/clay nanocomposites", JOURNAL OF NETWORK POLYMER, vol. 32, no. 6, 2011, Japan, pages 332 - 338, XP055580956
Attorney, Agent or Firm:
OKUBO, Katsuyuki (7th Floor, SEIBUNDO Building 4-3-26, Kudan-kit, Chiyoda-ku Tokyo 73, 〒1020073, JP)
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