PRECOATED PLATED STEEL SHEET AND MOLDED PRODUCT

WIPO Patent Application WO/2022/210200

A1

[Problem] To use a Zn-Al-Mg-based alloy plated steel sheet as a source sheet and increase corrosion resistance relating to corrosion under a coating film in a 0T bent section and the periphery of the same, without cracking or peeling occurring in the coating film even due to the 0T bending process. [Solution] A precoated plated steel sheet according to the present invention comprises: a plating layer that is located on one surface or both surfaces of a steel sheet, and comprises a Zn-Al-Mg-based alloy plating; a chemical conversion treatment film layer that is located on the plating layer; and a coating film layer that is located on the chemical conversion treatment film layer, wherein the coating film layer has a primer coating film layer and an upper layer coating film layer located on the primer coating film layer, and satsifies condition (a-1) and condition (a-2), and/or satisfies condition (b), and/or satisfies condition (c).

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FURUKAWA HIROYASU (JP)
FUJII TAKASHI (JP)
SHIBAO FUMIO (JP)
UEDA KOHEI (JP)
NAKAGAWA AKIRA (JP)
YAMAMURA YUKI (JP)
SASAKI NAOTO (JP)

PCT/JP2022/013683

October 06, 2022

March 23, 2022

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NIPPON STEEL CORP (JP)

B32B15/09; C23C28/00

WO2018062515A1	2018-04-05
WO2017187799A1	2017-11-02
WO2012001981A1	2012-01-05
WO2012039217A1	2012-03-29
WO2016174746A1	2016-11-03
WO2020100286A1	2020-05-22

JP2008254349A	2008-10-23
JP2008012734A	2008-01-24
JPS6397267A	1988-04-27
JP2008012734A	2008-01-24

HAGIWARA, Yasushi et al. (JP)

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