| 摘要 |
PROBLEM TO BE SOLVED: To provide a tin plate for a welded can excellent in adhesion for a coating material and a film, weldability, corrosion resistance and tin peeling resistance. SOLUTION: At least one side of a cold rolled steel sheet is provided with a tinning layer composed of a planar tinning layer uniformly covering the plate face and tin lump parts discontinuously present on the upper part of the planar tinning layer, in which the total coating weight of the tinning is 0.5 to 2.0 g/m2, and the coating weight of the tinning in the planar tinning layer is 0.05 to 0.3 g/m2, the total of the steel sheet projected areas of the tin lump parts is 15 to 70% of the steel sheet area, and also, the total of the steel sheet projected areas of the tin lump parts satisfying H/D<=0.3 (where, H: the average height of the tin lump parts from the steel sheet face, and D: the diameter of a circle in the case the steel sheet projected areas of the tin lump parts are expressed in terms of the area of the circle) is controlled to >=70% of the total of the steel sheet projected areas of all the tin lump parts.
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