METHOD AND DEVICE FOR FORMING OUTLINE OF CAN SHELL

摘要

A method of forming the outline of a can shell, comprising the step of pressing, from the outside, a pressing member (44), against the peripheral wall of the can shell (4) having an inside maintained at a specified pressure with gas to form recess-deformed parts (56) of a specified shape in the peripheral wall of the can shell (4), whereby the strength of the can shell (4) can be prevented from lowering and the inner surface of the can shell (4) can be prevented from being scratched, and film on the inner surface of the can shell can be surely prevented from being damaged, three-dimensional patterns can be formed by recess-deforming the can shell (4) at specified positions, and an outline formation with a high designability can be easily applied to the can shell (4) at a low cost.