Patent ID: 8727155

Claim:
A method of producing a can body of a two-piece can, comprising: (a) providing a laminated steel sheet comprising a steel sheet and a copolyethylene terephthalate resin layer containing at least one member selected from the group consisting of isophthalic acid and cyclohexane dimethanol as a copolymer component in a proportion of 5 to 20 mol %, and having a crystallization temperature of 120° C. to 140° C. on at least one side of the steel sheet; and (b) shaping, in multiple steps, a circular sheet of the laminated steel sheet into a formed body, which satisfies the following relationships: r 1 ≦r, 0.1≦r 1 /R≦0.25, and 1.5≦h/(R−r)≦4, wherein r 1 represents the minimum radius of the can body, r represents the maximum radius of the can body, h represents the height of the can body, and R represents the radius of the laminated steel sheet having a circular shape before shaping whose weight is the same as that of the can body.