| 摘要 |
PROBLEM TO BE SOLVED: To satisfy characteristics of a thin-walled deep drawn can by tin-plating in a specific amount on a steel plate, setting its specific area ratio to continuously precipitated state of fin particles, and sequentially laminating specific amounts of metal chromium layer, hydrated chromium oxide layer and biaxially oriented polyethylene terephthalate film on its upper layer. SOLUTION: The steel plate is coated on its surface with a tin-plated layer in which 3 to 500 pieces of tin electrolytic precipitated particles are continuously precipitated at 30% or more of surface coating area with tin plating amount of 50 to 1000mg/m<2> and surface coating area ratio of tin plating of 4 to 20%, its upper layer is chromium of 50 to 150mg/m<2> and hydrated chromium oxide of 5 to 30mg/m<2> is provided at the upper layer. Further, a biaxially oriented polyethylene terephthalate resin film is laminated on the upper layer. This film having low crystallizing temperature of 135 to 165 deg.C is particularly preferable in view of processing adhesive properties, permeation resistance and impact resistance processability with a surface-treated steel plate, and its thickness is preferably 5 to 50μm. |
