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:
Sep. 30, 1986
Filed:
Oct. 01, 1984
Tsuneo Inui, Yamaguchi, JP;
Atsuo Tanaka, Yamaguchi, JP;
Tetsuhiro Hanabusa, Yamaguchi, JP;
Harunori Kubota, Yamaguchi, JP;
Toyo Kohan Co., Ltd., Tokyo, JP;
Abstract
A method for the production of a metal sheet covered with polyester resin film which comprises laminating a biaxially oriented polyester resin film which has been precoated uniformly with a small amount of an epoxy resin containing a curing agent of epoxy resin to a metal sheet covered with double layer consisting of an upper layer of hydrated chromium oxide and a lower layer of metallic chromium, which metal sheet has been heated to a temperature of 220.degree. C. to below the melting point of polyester resin film, in the condition wherein the surface of said polyester resin film precoated with an epoxy resin containing the curing agent of epoxy resin contacts the metal sheet. This metal sheet covered with polyester resin film is excellent in corrosion resistance and adhesion of polyester resin film to the metal sheet after any severe forming.