Welded can body, welded can, method of manufacturing welded can body, and method of manufacturing welded can

摘要: This welded can body is constituted of a steel plate material formed from tin-free or resin coated wherein with resin, overlapping corresponding parts each other, and forming weld part by resistance welding the overlapped parts. Laser processing on at least one four surfaces made up two constituting electrode contact sides that an (A) during joining where joined together, have laser irradiation parts, carried out before to eliminate chrome plating expose plate, separately disposed be become material.