How is aluminum foil produced

Jul 21, 2023

At present, China is the world's leading producer and exporter of aluminum foil. The production and processing technology of aluminum foil has reached world-class level, and the product quality has reached the international advanced level. How is aluminum foil produced?



Aluminum foil production refers to the whole process from the beginning of the aluminum foil wool to the processing of the foil. It is a continuation of the aluminum strip cold rolling process. The billet of aluminum foil has two kinds of hot rolled billet and cast billet, which are cold-rolled into aluminum foil wool having a thickness of 0.4-0.7 mm, and then obtained by rough rolling, medium rolling and finish rolling to obtain aluminum foil of different thicknesses. The specific process for producing aluminum foil is determined according to the alloy type, finished product specification, product quality requirements, production quantity, production equipment specifications and production capacity of the products produced. The overall production process of aluminum foil for flexible packaging (thickness: 0.0065mm - 0.007mm) is: aluminum ingot smelting - casting and rolling - cold rolling - intermediate annealing - cold rolling - aluminum foil wool - rough rolling - Medium rolling - finish rolling (double) - slitting - finished annealing - packaging.



Aluminum 8011, 8021, 8079 aluminum foil processing applications are very wide, such as beer labels, cables, pharmaceutical packaging, household foil food packaging, bottle cap materials, heat sealing foil, etc., almost everywhere in daily life. Especially after the aluminum foil and the paper are processed by the composite, the packaging performance of the 8 series aluminum foil is further improved, and the application market of the aluminum foil is widened, especially in the outer packaging of the popular cooking food in recent years, the composite material is introduced once.