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Patent Searching and Data


Title:
SURFACE-TREATED METAL PLATE AND METHOD FOR PRODUCING SURFACE-TREATED METAL PLATE
Document Type and Number:
WIPO Patent Application WO/2018/025651
Kind Code:
A1
Abstract:
One aspect of the present invention is a surface-treated metal plate which comprises a galvanized steel sheet and a surface treatment coating film that is laminated on at least one surface of the galvanized steel sheet, and wherein: the surface treatment coating film is configured from a surface treatment composition that contains colloidal silica having an average particle diameter of 4-6 nm and a polyolefin resin containing no ammonia; the content of the colloidal silica is 10 parts by mass or more but less than 30 parts by mass relative to 100 parts by mass of the surface treatment composition; the coating amount of the surface treatment coating film is 0.4-1.2 g/m2; and the amount of sodium ions released from the surface treatment coating film when immersed in a deionization water at 70-80°C for 10 minutes is 4 mg/m2 or less.

Inventors:
NAKAMOTO, Tadashige
YU, Hang
Application Number:
JP2017/026321
Publication Date:
February 08, 2018
Filing Date:
July 20, 2017
Export Citation:
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Assignee:
KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.) (2-4 Wakinohama-Kaigandori 2-chome, Chuo-ku Kobe-sh, Hyogo 85, 〒6518585, JP)
International Classes:
C23C28/00; B32B15/085; C09D5/08; C09D7/12; C09D123/00; C23C22/20
Attorney, Agent or Firm:
KOTANI, Etsuji et al. (Osaka Nakanoshima Building 2nd Floor, 2-2 Nakanoshima 2-chome, Kita-ku, Osaka-sh, Osaka 05, 〒5300005, JP)
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