Invention Grant
- Patent Title: Environmentally-friendly steel sheet for a can or a container as well as laminated and pre-coated steel sheet by using it
- Patent Title (中): 用于罐或容器的环保型钢板,以及使用它的层压和预涂钢板
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Application No.: US12733272Application Date: 2008-08-21
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Publication No.: US08404357B2Publication Date: 2013-03-26
- Inventor: Nobuo Kadowaki , Toshio Senda
- Applicant: Nobuo Kadowaki , Toshio Senda
- Applicant Address: JP Tokyo
- Assignee: Nippon Steel & Sumitomo Metal Corporation
- Current Assignee: Nippon Steel & Sumitomo Metal Corporation
- Current Assignee Address: JP Tokyo
- Agency: Kenyon & Kenyon LLP
- Priority: JP2007-216566 20070823
- International Application: PCT/JP2008/065344 WO 20080821
- International Announcement: WO2009/025390 WO 20090226
- Main IPC: B32B15/04
- IPC: B32B15/04 ; B32B15/18 ; B32B18/00

Abstract:
Laminated steel sheet for a container material with a small environmental load container material and coating pre-coated steel sheet for a container material characterized by comprising steel sheet having on it a tin layer or iron-tin alloy layer which has on it a tin oxide layer of a thickness measured by an electric stripping method of 0 mC/cm2 to 3.5 mC/cm2 and has further formed on that a foundation layer including a zirconium compound not including fluorine or nitrate nitrogen, having an amount of coating converted to zirconium of 1 mg/m2 to 30 mg/m2, and having an amount of sulfuric acid radicals (SO42−) of 0 mg/m2 to 7 mg/m2.
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