aluminum foil
Quick Summary
aluminum foil and micrometer
Roll of aluminum foil with a micrometer in the foreground.
Aluminum foil is a thin sheeting of aluminum that is primarily used for covering and wrapping food. It is produced by rolling metal to a leaflike thinness. While tin foil was once common, aluminum has largely replaced it for most applications.12
Aluminum foil can be manufactured with a bright finish on one side and a matte finish on the other by rolling two sheets together. It can also be colored, printed, embossed, or coated with plastic film for various uses.1
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