WELDED CAN BODY, WELDED CAN, METHOD FOR MANUFACTURING WELDED CAN BODY, AND METHOD FOR MANUFACTURING WELDED CAN

• Main Authors: ARAI TAKASHI, KOBAYASHI NOBUYUKI, MORIOKA YUJIRO, KUBO HIROSHI
• Format: Patent
• Language: English
• Published: 18.01.2021

This welded can body (Wl) is constituted by forming a steel plate material (M) formed from a tin-free steel plate or a resin coated steel plate wherein a tin-free steel plate is coated with a resin (F), overlapping corresponding parts with each other, and forming a weld part (11) by resistance welding of the overlapped parts. Laser processing parts (G), which are formed on at least one of four surfaces made up of two surfaces constituting electrode contact surfaces on sides that make contact with an electrode (A) during the resistance welding and two surfaces constituting joining surfaces on sides where this steel plate material is joined together, have laser irradiation parts (13), wherein laser irradiation is carried out before the resistance welding to eliminate chrome plating and expose the steel plate, separately disposed on parts to be welded (12), which are to become the weld parts (11), on the steel plate material (M).