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:
Jul. 19, 1994
Filed:
Feb. 19, 1992
Atsuo Tanaka, Tokuyama, JP;
Tetsuhiro Hanabusa, Tokuyama, JP;
Harunori Kojo, Yamaguchi, JP;
Tsuneo Inui, Tokuyama, JP;
Toyo Kohan Co., Ltd., Tokyo, JP;
Abstract
A method for producing a copolyester resin film laminated metal sheet having an excellent heat resistance which comprises laminated a biaxially oriented copolyester resin film having specified characteristics on one or both sides of a metal sheet coated with a single layer of hydrated chromium oxide or a double layer consisting of a lower layer of metallic chromium and an upper layer to hydrated chromium oxide which has been heated to a temperature of Tm-50.degree. C. to Tm, where Tm represents the melting temperature of said copolyester resin film. This copolyester resin film laminated metal sheet is suitable for the materials for can stock which is reheated for curing the coated lacquer or treated with hot steam for sterilization of food after packing food in the cans, such as deeply drawn cans, drawn and redrawn cans, can ends, screwed caps and crown caps.