ENVIRONMENTALLY FRIENDLY STEEL SHEET FOR CONTAINER MATERIAL, PROCESS FOR PRODUCING THE SAME, AND ENVIRONMENTALLY FRIENDLY LAMINATED STEEL SHEET FOR CONTAINER MATERIAL AND PRECOATED STEEL SHEET FOR CONTAINER MATERIAL EACH PRODUCED FROM THAT STEEL SHEET

Title:

Document Type and Number:

WIPO Patent Application WO/2009/025390

Kind Code:

A1

Abstract:

A laminated steel sheet for container materials or a precoated steel sheet for container materials. The steel sheets each is characterized by comprising a steel sheet, a tin layer or iron-tin alloy layer formed on the steel sheet, a tin oxide layer which is present on the tin or alloy layer and has a thickness as measured by the electrolytic removal method of 0-3.5 mC/cm2, and a chromium-free primer layer for adhesion enhancement which is formed on the oxide layer and which comprises a zirconium compound and contains neither fluorine nor nitrate nitrogen, the amount of the primer layer film being 1-30 mg/m2 in terms of zirconium amount, the content of sulfuric acid radicals (SO4 2-) therein being 0-7 mg/m2.

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Inventors:

KADOWAKI NOBUO (JP)
SENDA TOSHIO (JP)

Application Number:

PCT/JP2008/065344

Publication Date:

February 26, 2009

Filing Date:

August 21, 2008

Export Citation:

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Assignee:

NIPPON STEEL CORP (JP)
KADOWAKI NOBUO (JP)
SENDA TOSHIO (JP)

International Classes:

C23C28/00; B32B15/01; C25D5/26; C25D5/48; C25D9/08

Foreign References:

JPS54158341A	1979-12-14
JP2000080498A	2000-03-21
JP2003082497A	2003-03-19
JP2002060958A	2002-02-28
JPH11264075A	1999-09-28
JPH0748677A	1995-02-21

Other References: