slightly colder than the liquid content of glass bottles when allowed to warm at room temperature. These results were not corroborated by a 2005 study at Bucknell University, which found that “the fluid in the aluminium bottle cools much faster than the glass bottle, and once removed from a cold source and exposed to room temperature, the glass bottle remained cooler longer than the aluminium bottle.” This conclusion is consistent with the fact that the bulk thermal conductivity of aluminium (237 W/(m·K)) is significantly higher than that of glass (1.1 W/(m·K)), as well as the fact that aluminium bottles are significantly thinner than glass. Fabrication Aluminium Bottlecans are typically made through either an impact extrusion or deep drawing process, followed by additional necking and thread forming steps. See also List of bottle types, brands and companies References External links Photos of aluminium bottles The rise of aluminium drink bottles How to wash your aluminium protein bottles aluminium metal protein shaker bottles Bottle Bottles American inventions Aluminum objects