There are several steps in forming a seamless aluminum beverage can: (1) a flat circle of metal is punched into a tuna-can shape; (2) it is drawn out to a taller shape; (3) it is squeezed out to its final height; (4) it is printed to advertise its contents; (5) its bottom is given a characteristic domed shape to resist the pressure it will contain; and (6) its neck is formed to be crimped around the top that will be added after filling.
From: The Evolution of Useful Things by Henry Petroski
Find this & other great insights in our Crutchfield Dermatology newsletter archive
|
