Saturday, February 11, 2017

What are the main uses for aluminum foil?

Aluminum foil is a thin-rolled sheet of alloyed aluminum varying in thickness from about 4 – 150 um. It was first produced commercially in the United States in 1913 where it was used for wrapping Life Savers, candy bar and chewing gum.

A major portion of aluminum foil is relatively pure, with minimum aluminum content of 99.45 percent. Higher strength alloy is used in heavier gauges for semi-rigid or unsupported foil containers.

Aluminum foil is available in a variety of alloys, with the alloys 1100, 1145 and 1235 most commonly used in flexible packaging and 3003 when heavier gauges are required for stiffness. These numbers correspond to the allow compositions. The temper range from fully annealed or soft foil, designated 0 temper, to hard foil, designated H 19.

Aluminum foil unsupported by other films or laminants is used as a wrap for yeasts, candy and chocolate. In heavier gauge forms it is used for frozen meat, fish and poultry dishes, frozen food dinners, cheese, and bakery goods.

Foil packaging also reserved for soup mixes or other dry powdered products (such as dehydrated milk) which are very sensitive to moisture and are stored at room temperature on the open shelf.
What are the main uses for aluminum foil?
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