| 摘要 |
A can body manufacturing method has a barrel section of the can body held between first and second rotation bodies. The first body has at a first recess in its outer surface, and the second body has a second projection on its outer surface. The bodies are brought together so the barrel section is pressed radially inward by the second projection and fits into the first recess. When the holding of the barrel section by the rotation bodies is released, that portion of the barrel section corresponding to the first recess and the second projection is caused to restore elastically radially outward. As a result, the outer surface of that portion of the barrel corresponding to the projection and recess is caused to position more outside than the rest of the outer surface of the barrel section.
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