2006-12-10 01:40:07 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Physics
In addition to the stacking design elements previously mentioned ...
Beer cans are stamped out of the flat sheet of aluminum. A tool shapped like a can is pressed onto the sheet over a hole also shaped like a can. The aluminum stretches as the tool pushes its way into the aluminum.
Once the can shape is fully formed the tool and can must be extracted from the molds. If the can sides and bottom were at right angles and perfectly straight the can would be hard to remove as the can would drag along the sides of the mold.
To make it easier to release the can, rounded edges and tapered dimensions are used. This way once the can is moved a little bit out of the mold the sides of the can will no longer touch the mold. The tapers make it easier to remove the can from the mold and tooling.
At this point you have a can with a tapered bottom and an open top with straight sides at the top. Another machine trims the top and molds the finished edge attaching the top. Tapers are used here as well to aid in releasing the finished can from the tooling
2006-12-10 03:06:46 · answer #1 · answered by MarkG 7 · 0⤊ 1⤋
For ease of storage, plus companies found it was cheaper to make by using less aluminum.
2006-12-10 09:42:01 · answer #2 · answered by imjarhed 1 · 0⤊ 0⤋
So they fall out of machines properly.
2006-12-10 09:41:49 · answer #3 · answered by $Sun King$ 7 · 0⤊ 0⤋
For stacking, dude.
2006-12-10 09:41:37 · answer #4 · answered by Anonymous · 0⤊ 0⤋
so you can stack them and make beer can towers
2006-12-10 09:41:30 · answer #5 · answered by Afiniwish 2 · 0⤊ 0⤋
so drunkards can ask why on yahoo answers.
2006-12-10 09:41:12 · answer #6 · answered by Anonymous · 0⤊ 2⤋