METHOD OF MANUFACTURING SPECIAL SHAPED CAN

摘要

PROBLEM TO BE SOLVED: To provide a manufacturing technique of a special shaped can which has a high ratio between the maximum and the minimum diameter of the can body as well as a recapping feature. SOLUTION: A metallic tube having a thickness of 1-0.3 mm is arranged in a molding die, and a hydraulic pressure is applied to the inside of the metallic tube. As a result, expansion molding is possible so that the expansion rate is 25% or higher at the maximum diameter part of the can body without expanding at least one end of the metallic tube.