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    • 4. 发明专利
    • EASILY COMPRESSIBLE BEVERAGE CAN
    • JPH10194279A
    • 1998-07-28
    • JP3105797
    • 1997-01-06
    • KOBAYASHI YASUNORI
    • KOBAYASHI YASUNORI
    • B65D8/14
    • PROBLEM TO BE SOLVED: To easily compress a beverage can by hands without a special device, by providing spiral or circular protrusions and recessions on the can body. SOLUTION: An aluminum can is held by two protrusion and recession rolls in the production process of beverage aluminum cans and rotated to give continuous grooves on the whole body face. In this way, spiral or circular recesses are formed on the side face of the aluminum can. When spiral recesses are formed, the upper and lower sides of the aluminum can are held by hands and a vertical pressure is applied while rotating the can to the spiral direction. In this way, the aluminum can be easily compressed. In case of an aluminum can which is provided in advance with recessions on the can body to make it collapsible, the recessions near the cover and the bottom are bent at first as folds and the body is made flat such as a plate and then, the body is collapsed and compacted.