Bright welded seam can of tinplate
AssigneeToyo Seikan Kaisha, Ltd.
InventorsYoichi Kitamura, Hisashi Hotta, Makoto Ito
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Abstract
Disclosed is a bright welded seam can of tinplate having a side seam formed by welding, wherein each of the inner and outer surfaces of the side seam has an outermost surface layer having a thickness of 50 to 400 A and being composed of oxides and a subsequent intermediate layer composed of an iron-tin alloy, which has a thickness corresponding to 5 to 100% of the thickness of the whole tin layer in the tinplate blank, and wherein the inner and outer surfaces of the side seam have a reflectance corresponding to at least 60% of the reflectance of the tinplate. This bright welded seam can is excellent in the appearance of the seam, the corrosion resistance and the adhesion of the coating.
Claims4
A bright welded seam can of tinplate having a side seam formed by welding a tin plate blank, wherein each of the inner and outer surfaces of said side seam has an outermost surface layer having a thickness of 50 to 400 A and being composed of oxides and a subsequent intermediate layer composed of an iron-tin alloy, which has a thickness corresponding to 5 to 100% of the thickness of the whole tin layer in the tinplate blank, and wherein said inner and outer surfaces of the side seam have a reflectance corresponding to at least 60% of the reflectance of the tinplate blank.
Dependencies are inferred from the claim text.