| 摘要 |
<p>The method is characterized in that a first expansion is carried out on the sheet-metal side wall of a cylindrical body which has already been provided with its base. Preferably the first expansion on the side wall gives a greater conicity than that which corresponds to the final container, and then a cylindrical top zone is formed on the top part of the body, within which zone forming operations can be carried out so as to produce a reinforcing circumferential flange, and then work is carried out to reduce the canicity of the enlarged conical shape. <IMAGE></p> |
