The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 29, 2019
Filed:
May. 18, 2016
Toyo Seikan Group Holdings, Ltd., Tokyo, JP;
Takuya Kashiwakura, Yokohama, JP;
Yuji Funagi, Yokohama, JP;
Tomohiro Miyai, Yokohama, JP;
Arata Sakuragi, Yokohama, JP;
TOYO SEIKAN GROUP HOLDINGS, LTD., Tokyo, JP;
Abstract
A chromium-free surface-treated metal sheet includes a metal sheet, a surface-treatment coating that contains a polycarboxylic acid type polymer and a zirconium compound and that is formed on at least one surface of the metal sheet, and a coating that contains a polyester resin, a phenol resin and an acid catalyst and that is formed on the surface-treatment coating. The surface-treated metal sheet can be used for producing cans and can lids maintaining excellent dent resistance even for acidic beverages, without permitting the organic resin film formed on the coating to be peeled even under high-temperature and wet environments during a sterilization treatment or the like, and maintaining excellent hot water-resistant adhering property.