Aluminum foil is a direct rolling into sheet metal stamping material aluminum, similar to the effect of its stamping and pure silver stamping effect, so called false silver. Because aluminum is soft, ductile, with silver-white luster, if the sheet after the rolling, mounted with sodium and other substances made of aluminum foil in offset paper, but also for printing. But the aluminum foil itself easily oxidized and darkened, friction, touch, etc. will fade, so does not apply to long-term preservation of stamping book cover or the like. Differences can be divided according to the thickness of aluminum foil thick foil, single zero and double zero foil foil.

The so-called double-zero foil after its thickness is in mm unit of measurement of the decimal point two zero foil, usually aluminum foil thickness of less than 0.0075mm. When the English expression, thick foil called "heavy gaugefoil '', single zero foil called" medium gaugefoil ", double zero foil called" lightgaugefoil ''. Foreign sometimes ≤40ltm thickness of aluminum foil called light gauge foil, and the thickness 40btm aluminum foil collectively referred to as heavy gaugefoil.