Title:
SURFACE-TREATED STEEL SHEET, ORGANIC RESIN-COATED STEEL SHEET, AND CONTAINER USING SAME
Document Type and Number:
WIPO Patent Application WO/2018/042980
Kind Code:
A1
Abstract:
[Problem] To provide a surface-treated steel sheet, etc. for which it is possible to limit the occurrence of sulfidation blackening while taking the effects of stannous oxide and stannic oxide into consideration. [Solution] This surface-treated steel sheet: comprises a steel sheet, a tin plating layer formed on the steel sheet and a chemical conversion film that is formed on the tin plating layer and contains essentially no chromium; and is characterized in that in measurements using anode polarization, the current density ratio of the current density I1 at a potential representing the reaction of stannous oxide (SnO) after undergoing heat treatment equivalent to coating baking with respect to the sum (I1+I2) where I2 is the current density at a potential representing the reaction of stannic oxide (SnO2) is less than 0.36.
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Inventors:
TAGUCHI NAOMI (JP)
YANADA KENJI (JP)
MATSUKAWA MASAHIKO (JP)
UCHIKAWA MIWA (JP)
YOSHIDA KEISUKE (JP)
YANADA KENJI (JP)
MATSUKAWA MASAHIKO (JP)
UCHIKAWA MIWA (JP)
YOSHIDA KEISUKE (JP)
Application Number:
PCT/JP2017/027469
Publication Date:
March 08, 2018
Filing Date:
July 28, 2017
Export Citation:
Assignee:
TOYO KOHAN CO LTD (JP)
TOYO SEIKAN KAISHA LTD (JP)
TOYO SEIKAN KAISHA LTD (JP)
International Classes:
C23C28/00; B32B15/01; B32B15/08; B65D1/00; B65D8/00; C25D9/08
Domestic Patent References:
| WO2016121275A1 | 2016-08-04 | |||
| WO2011149047A1 | 2011-12-01 |
Other References:
TSUNEO INUI ET AL.: "Mechanism of the Formation of Sulfide Stains on Tinplate", JOURNAL OF THE IRON & STEEL INSTITUTE OF JAPAN, vol. 7, 1982, pages 850 - 857, XP055470948, DOI: doi:10.2355/tetsutohagane1955.68.7_850
See also references of EP 3508617A4
See also references of EP 3508617A4
Attorney, Agent or Firm:
OHTA PATENT OFFICE (JP)
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