Can barrel and method for manufacturing can barrel

For cans, it is important to ensure sealing when the can lid is wound around. Particularly, the axial length of the bent body hook at the end region of the flange region of the can body, that is, the so-called body hook amount BH, greatly affects the sealing performance. Conventionally, there has been a problem that the variation of the body hook amount BH in the can is large. A can barrel having, in order from the open end, a flange region, a bent region, and a neck region, wherein a can barrel inner line, which is an inner line in a longitudinal section by a plane including the can axis, In the bent region, a radius of curvature is smaller than that of the flange region and the neck region, and in the neck region, the neck region has a tapered shape in which a side of an opening...