# US 10,246,779 B2 · Surface-treated aluminum plate, organic-resin-coated surface-treated aluminum plate, can body and can lid formed by using the same

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- Number: US 10,246,779 B2
- Document ID: US10246779B2
- Status: Granted
- Kind: B2
- Application number: 15/904,860
- Filed: 2018-02-26
- Published: 2018-06-28
- Granted: 2019-04-02
- Earliest claimed: 2012-03-30
- Assignees: Toyo Seikan Group Holdings, Ltd.
- Applicants: Toyo Seikan Group Holdings, Ltd.
- Inventors: Tomohiro Miyai; Takuya Kashiwakura; Yuji Funagi
- Web page: https://patentgrep.com/patent/US10246779B2

## CPC

- C23C 22/34: containing fluorides or complex fluorides
- B65D 25/14: Linings or internal coatings (of containers made by folding or erecting blanks made of paper B65D5/56 {; linings for domestic water storage heaters F24H1/183})
- B65D 25/34: Coverings or external coatings (of containers made by folding or erecting blanks made of paper B65D5/62; covering or external coating for bottles or jars not otherwise provided for B65D23/08; wrappers B65D65/00)
- Y10T 428/1355: Elemental metal containing [e.g., substrate, foil, film, coating, etc.]
- Y10T 428/25: Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
- Y10T 428/31681: Next to polyester, polyamide or polyimide [e.g., alkyd, glue, or nylon, etc.]
- C23C: COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04)
- B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A surface-treated aluminum plate obtained by forming, on at least one surface of an aluminum plate, a conversion-coated layer that contains a polyester resin and a zirconium compound or a titanium compound. The surface-treated aluminum plate excellently adheres to an organic resin coating and can be used as a material for producing cans featuring excellent corrosion resistance and shock resistance.

## Claims

### Claim 1

A surface-treating solution for treating the surface of an aluminum plate by a conversion treatment, the surface-treating solution containing
a water-dispersible polyester resin,
fluorine ions, and
zirconium ions or titanium ions;
wherein said water-dispersible polyester resin is contained in an amount of 100 to 10,000 ppm, and said zirconium ions or said titanium ions are contained in an amount of 5 to 5,000 ppm.

### Claim 2 (depends on 1)

The surface-treating solution according to claim 1, wherein a polycarboxylic acid and/or a water-dispersible particulate component is contained.

### Claim 3 (depends on 2)

The surface-treating solution according to claim 2, wherein
said polyester resin is contained in an amount of 500 to 10,000 ppm,
said water-dispersible particulate component is contained in an amount of 100 to 3,000 ppm,
said polycarboxylic acid is contained in an amount of 5 to 2,000 ppm, and
said zirconium ions or said titanium ions are contained in an amount of 5 to 5,000 ppm.