METALLIC SHEET COVERED WITH POLYESTER RESIN FILM AND HAVING HIGH WORKABILITY, AND METHOD OF MANUFACTURING SAME

摘要

A metallic sheet covered with a polyester resin film, having a high workability and applicable to use requiring a severe working such as drawing, drawing and ironing, thin wall drawing, and ironing after thin wall drawing, and a method of manufacturing the same. A metallic sheet heated above a fusing point of a polyester resin is contacted with a polyester resin film, a pair of laminate rolls are used to clamp the both therebetween to effect compression-bonding and covering, during which time the metallic sheet is cooled at a cooling rate of at least 600 DEG C/sec., whereby the metallic sheet covered with the polyester resin film has an actual stress of 3.0 to 15.0 kg/mm producing a true strain of 1.0 measured at 75 DEG C on the polyester resin film after covering.