How is aluminum foil made?

- Jul 15, 2020-

The manufacture of aluminum foil is similar to making pasta at home. A large, almost pure aluminum block was rolled several times through giant steel rollers, thereby reducing the thickness of the aluminum block and spreading it out to make it longer. Lubricants were added during the rolling process to facilitate operation. Each time the roller is continuously passed, the thickness is continuously thinned. Repeat this process until the thickness of the foil aluminum is reached, then cut the large aluminum foil to the desired width.

aluminum foil factory

This seems simple, but the actual process may not be easy. For example, when aluminum is pushed out, it heats up. If the temperature is too high, it will stick to the roller, so the pressure of the roller must be carefully controlled.


When the thickness of the aluminum plate is 5 mm, it must be rolled again at the cold rolling stage. First, the sheet is rolled on a roll, and then sent to a cold rolling mill for final rolling. It is at this point that the bright and dark side of aluminum is created. Since the aluminum is too thin now, the tension required to convey the aluminum through the cold roller can easily break the aluminum. Because the aluminum sheet has two surfaces, the aluminum surface that contacts the steel roller becomes smoother and more shiny, and the aluminum surface that contacts the surface becomes matte.


Henan Tendeli Metallurgical Materials Co., Ltd. is a company that has been engaged in aluminum foil processing and sales for decades in China. We sell aluminum foil for various purposes, such as household aluminum foil, food container aluminum foil, flexible packaging aluminum foil, beer neck lable aluminum foil, heat sealing aluminum foil, industrial aluminum foil, hookah aluminum foil etc. If you have the need for aluminum foil, welcome to come consult. Your inquiry will get our prompt attention!