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Encyclopedia > Aluminium can

The aluminum can (North American English spelling) or aluminium can (other English spelling) is a popular beverage container introduced by the Coors Brewing Company.


Modern cans are generally produced through a mechanical process that involves punching a flat blank. The malleable metal deforms into the shape of an open-top can, and the top portion of the cylinder may again be deformed in a conical shape. Jagged edges at the top are trimmed, and the container is filled with liquid. Finally, a top piece is affixed to the top of the can, containing a scored region and a pull tab that can be leveraged to open the hole.


Early beverage cans were opened by pulling a tab that completely removed a portion of the can's lid. These "pop top" tabs were a common form of litter__and a lingering hazard for bare feet, especially at public beaches__for many years until a new type of can was introduced.


Because they are made of aluminum, these containers are very suitable for recycling. In many parts of the world a deposit can be recovered by turning in empty plastic, glass, and aluminum containers. Unlike glass and plastic, aluminum cans are often purchased in bulk by scrap metal dealers, even when deposits are not offered. Their metal construction also conducts heat more readily than glass or plastic, and drinks in aluminum cans can be chilled more quickly than those in other containers.


Many consumers find the taste of a beverage from a can to be different from fountain drinks and beverages from plastic or glass bottles. Additionally, some people believe that aluminum leaching into the fluid contained inside can be dangerous to the drinker's health. [Disproved?]


The first soft drinks to be sold in all-aluminum cans were R.C. Cola and Diet-Rite Cola (both made by the Royal Crown Cola company), in 1964.


A single empty 12 fluid ounce aluminum can weighs approximately 13.3 grams, or 0.47 ounces. Therefore there are about 34 empty aluminum cans to an avoirdupois pound.


See also


  Results from FactBites:
 
Aluminium (4695 words)
Powdered aluminium and rust in the approximate ratio of 1:3 are packed in a refractory crucible with a magnesium ribbon, or a powder of magnesium and barium peroxide, to ignite it.
Aluminium can be protected by a thick layer of oxide made by electrolysis, a process called "anodizing." The surface is first thoroughly cleaned and degreased in trichloroethylene, or by electrolysis, where the aluminium is the cathode and the grease driven off by the evolved hydrogen.
Aluminium sulphate is found in nature as the rare mineral Kalinite, which is soluble in water, so it is found only near volcanoes and such places where it is make by the action of sulphuric acid on clays, such as on Lipari, near Vesuvius, and a few places in Germany and South America.
aluminum: Definition and Much More from Answers.com (7765 words)
Aluminium is found primarily as the ore bauxite and is remarkable for its resistance to corrosion (due to the phenomenon of passivation) and its light weight.
Stresses from overheating aluminium can be relieved by heat-treating the parts in an oven and gradually cooling, in effect annealing the stresses; this can also result, however, in the part becoming distorted as a result of these stresses, so that such heat-treating of welded bicycle frames, for instance, results in a significant fraction becoming misaligned.
Aluminium was selected as the material to be used for the apex of the Washington Monument, at a time when one ounce cost twice the daily wages of a common worker in the project; aluminium was a semiprecious metal at that time.
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