Patent Number: 7,708,850

Title: Manufacturing method of laminated metal plate and laminated metal plate manufactured by the method

Abstract: In the manufacturing method of the laminated metal plate, a fluorine resin film is used as a plastic film. Prior to a flame treatment, a joint surface of the metal plate is heated with a direct flame of 900.degree. C. to 1200.degree. C. for 1 to 5 seconds so that the joint surface is preheated to 40.degree. C. to 70.degree. C. After that, the joint surface of the metal plate is heated to 250.degree. C. to 450.degree. C. by the follow-on flame treatment.

Inventors: Watanabe; Toshio (Osaka, JP), Matsuura; Isamu (Osaka, JP)

Assignee: Laminate Industry Co., Ltd.

International Classification: B32B 37/00 (20060101)

Expiration Date: 5/04/12018