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Aluminum Foil 101 - How Foil is Made, Uses, and More!

Learn about aluminum foil production, uses, and common products! Find out how aluminum foil is made! Know which aluminum foil to use in the kitchen!

· archived 5/20/2026, 11:00:05 PMscreenshotcached html
Aluminum Foil 101 - How Foil is Made, Uses, and More!
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A Guide to Aluminum Foil Aluminum Foil- Aluminum is the third most abundant element on earth. It is extracted from bauxite. Bauxite is refined to make a pure aluminum oxide call alumina. The alumina is charged with an electrical current. This process is known as electrolytic reduction. The metal produced from this process is added to a wide variety of alloys allowing them to provide specific characteristics suited for a variety of applications. Aluminum foil manufacturers commonly use pure aluminum. In recent years it has become popular to add a variety of aluminum alloys engineered to add strength and reduce the thickness of the aluminum foil. Once the alloy mixture is determined, it is melted and poured onto a cast and rolled to form a large sheet of aluminum foil. The rolling process is repeated until the desired thickness is reached. The main factors in reaching the desired thickness are roll pressure, mil speed, and rolling oils. As the aluminum foil is rolled into the desired thickness, it is spooled on large stock coils to hold the aluminum foil From the large coils, the aluminum foil is unspooled, cut, and spooled onto smaller cardboard spools. Once the aluminum foil is spooled onto the smaller spools, it is placed into boxes and prepared for shipping. The roll width, length, and thickness determine the number of boxes per case, and cases per pallet. For more information about the production of aluminum foil with illustrations and details about refining processes, visit aluminum.org. Aluminum Foil Thickness Chart Foil Type Foil Thickness in Mils Foil Thickness in Centimeter Foil Thickness in Millimeter Standard .0004-.0007 .001016-.001778 .0101-.01778 Heavy Duty .0008-.001 .002032-.00254 .02032-.0254 Extra Heavy Duty .0011-.0016 .002794-.004064 .02794-.04064 Common Kitchen Uses for Aluminum Foil Aluminum foil can be used to make a variety of containers as well as assist in a variety of kitchen applications. Below are a few common uses of aluminum foil: Covering baking surfaces- Aluminum foil is great to cover or line any kind of baking surface such as baking sheets, pans, skillets, etc. If properly greased, the aluminum foil can make clean up easy and economical. Cover containers and individual food items- Aluminum foil is commonly used to cover containers in homes and restaurants to protect them for storage. Many manufacturers use aluminum foil to cover individually wrapped items to protect them. Cooks often use aluminum ...