Surface-Treated Steel Sheet, Organic Resin Coated Metal Container, and Method for Producing Surface-Treated Steel Sheet
US-2016230301-A1 · Aug 11, 2016 · US
Surface-treated steel sheet, process for producing the same and resin-coated surface-treated steel sheet
US2017253985A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2017253985-A1 |
| Application number | US-201515510364-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 11, 2015 |
| Priority date | Sep 12, 2014 |
| Publication date | Sep 7, 2017 |
| Grant date | — |
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Abstract
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A surface-treated steel sheet for cans forming a coating of a compound containing chiefly Zr and containing F, the amount of Zr being 80 to 200 mg/m 2 and the amount of F being not less than 12 mg/m 2 in the coating on the surface that becomes the outer surface side of the can. The surface-treated steel sheet is capable of effectively preventing the resin coating from peeling on the outer surface side of the can at dented portions.
First claim
Opening claim text (preview).
1 . A surface-treated steel sheet for cans forming a coating of a compound comprising chiefly Zr and containing F, the amount of Zr being 80 to 200 mg/m 2 and the amount of F being not less than 12 mg/m 2 in the coating on the surface that becomes the outer surface side of the can. 2 . The surface-treated steel sheet according to claim 1 , wherein the amount of Zr is 80 to 200 mg/m 2 and the amount of F is not more than 25 mg/m 2 in the coating on the surface that becomes the inner surface side of the can. 3 . The surface-treated steel sheet according to claim 1 , wherein the amount of F is 12 to 40 mg/m 2 in the coating on the surface that becomes the outer surface side of the can. 4 . The surface-treated steel sheet according to claim 2 , wherein the amount of F is 0.5 to 10 mg/m 2 in the coating on the surface that becomes the inner surface side of the can. 5 . A resin-coated surface-treated steel sheet having a biaxially stretched film containing an inorganic pigment laminated on the coating of the surface-treated steel sheet of claim 1 on the side that becomes the outer surface of the can. 6 . A process for producing a surface-treated steel sheet for cans by forming, on a steel sheet, a coating of a compound comprising chiefly Zr and containing F, the process including the steps of: forming the coating that contains Zr in an amount of 80 to 200 mg/m 2 by the cathodic electrolysis in an aqueous solution that contains Zr ions and F ions; and adjusting the surface by bringing an alkaline aqueous solution into contact with the coating on the surface that becomes the inner surface side of the can and by bringing warm water into contact with the coating on the surface that becomes the outer surface side of the can. 7 . The process for producing the surface-treated steel sheet according to claim 6 , wherein the alkaline aqueous solution contains at least one or more of sodium, ammonium and potassium, and has a pH of not less than 9. 8 . The process for producing the surface-treated steel sheet according to claim 6 , wherein the warm water has a temperature of 30 to 70° C.
Assignees
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Classifications
After-treatment of electroplated surfaces · CPC title
one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium · CPC title
- C25D9/10Primary
on iron or steel · CPC title
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- What does patent US2017253985A1 cover?
- A surface-treated steel sheet for cans forming a coating of a compound containing chiefly Zr and containing F, the amount of Zr being 80 to 200 mg/m 2 and the amount of F being not less than 12 mg/m 2 in the coating on the surface that becomes the outer surface side of the can. The surface-treated steel sheet is capable of effectively preventing the resin coating from peeling on the outer sur…
- Who is the assignee on this patent?
- Toyo Seikan Kaisha Ltd, Toyo Kohan Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C25D9/10. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Sep 07 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).