Aluminum foil, or tin foil, is a paper-thin, shiny sheet of aluminum metal. It’s made by rolling large slabs of aluminum until they are less than 0.2 mm thick.
It’s used industrially for a variety of purposes, including packing, insulation, transportation, household foils, container foils, heat-sealing foils, insulation foils, medicinal foils, electronic foils, high-precision double zero aluminum foils and other products.