The aluminum foil blank is a cold-rolled aluminum coil with a thickness of 0.4-0.7 mm and a high multiple deformation rate. The aluminum foil blank is first pre-quenched at 240-480 ° C and then fed into a roller press for high hardness and high gloss. The steel roll is subjected to rough rolling, medium rolling, and finish rolling, rolled into a sheet, and finally subjected to quenching treatment to form an aluminum foil. The thickness of the aluminum foil can be controlled by adjusting the tension, the rolling force of the rough rolling, and the speed at the time of finish rolling.
At the time of finish rolling, the thickness of the foil is thinned as the rolling speed increases; the larger the tension, the smaller the thickness. The minimum thickness produced by the belt production method can reach 0.0025mm and the width can reach 1800mm. Such aluminum foil which has not been subjected to other processing is called a light foil or a plain foil, and the light foil has poor bearing capacity and is rarely used alone. Generally, the light foil is further processed according to different uses to make a higher-grade packaging material.
