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
US10858751B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10858751-B2 |
| Application number | US-201515510364-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 11, 2015 |
| Priority date | Sep 12, 2014 |
| Publication date | Dec 8, 2020 |
| Grant date | Dec 8, 2020 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
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).
The invention claimed is: 1. A seamless can formed of a surface-treated steel sheet having coatings of a compound comprising chiefly Zr and containing F, the coatings comprising a coating on an outer surface side of the seamless can and a coating on an inner surface side of the seamless can, wherein an amount of Zr is 80 to 200 mg/m 2 and an amount of F is not less than 12 mg/m 2 in the coating on the outer surface side of the seamless can, an amount of Zr is 80 to 200 mg/m 2 and an amount of F is 0.5 to 10 mg/m 2 in the coating on the inner surface side of the seamless can, and a biaxially stretched film containing titanium dioxide is laminated on the coating on the outer surface side of the seamless can. 2. The seamless can formed of 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 outer surface side of the seamless can. 3. A process for producing the seamless can formed of the surface-treated steel sheet according to claim 1 , by forming, on a steel sheet, the coatings of the compound comprising chiefly Zr and containing F, the process including the steps of: forming the coating on the outer surface side of the seamless can that contains Zr in the amount of 80 to 200 mg/m 2 by cathodic electrolysis in an aqueous solution that contains Zr ions and F ions; and adjusting the inner and outer surfaces of the seamless can by bringing an alkaline aqueous solution into contact with the coating on the inner surface side of the seamless can and by bringing warm water into contact with the coating on the outer surface side of the seamless can. 4. The process according to claim 3 , 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. 5. The process according to claim 3 , wherein the warm water has a temperature of 30° to 70° C.
Assignees
Inventors
Classifications
- C25D9/10Primary
on iron or steel · 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
After-treatment of electroplated surfaces · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US10858751B2 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 Tue Dec 08 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). 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).