Introduction to Key Aluminum Foil Products Other than Packaging Aluminum Foil
（1） Air conditioning foilAir conditioning foil is a specialized material for manufacturing heat exchanger fins for air conditioners, and the early use of air conditioning foil was plain foil. In order to improve the surface performance of the plain foil, a corrosion-resistant inorganic coating and a hydrophilic organic coating are applied before forming to form a hydrophilic foil. Hydrophilic foil accounts for 50% of the total amount of air conditioning foil, and its usage proportion will further increase. In addition, there is a type of hydrophobic foil that makes the surface of the fins hydrophobic, preventing condensation from adhering. Due to the need for further research on the technology of improving surface defrosting with hydrophobic foil, actual production is limited.The thickness of the air conditioning foil is 0.1mm~0.15mm. With the development of technology, there is a trend towards further thinning of air conditioning foil, with Japan's leading product having a thickness of 0.09mm. In an extremely thin state, aluminum foil must have good formability, uniform structure and properties, minimal metallurgical defects, low anisotropy, high strength, good ductility, uniform thickness, and good flatness. The specifications and alloys of air conditioning foils are relatively single, suitable for large-scale production, but their market seasonality is strong. For professional manufacturers of air conditioning foils, it is difficult to solve the contradiction between supply shortage during peak season and almost no demand during off-season.Due to strong market demand, the production capacity and technological level of air conditioning foils in China have been continuously improving in recent years. A group of enterprises producing air conditioning foils from large, medium, medium, medium, and low levels has now formed. Some large enterprises, such as North China Aluminum and Bohai Aluminum, have basically reached the international advanced level in product quality. Due to excess domestic production capacity, market competition is exceptionally fierce.
（2） Cigarette packaging foilChina is the world's largest producer and consumer of cigarettes, with 146 large cigarette factories producing a total of 34 million large boxes of cigarettes annually. Most of them are packaged with cigarette foil, with 30% using spray coated foil and 70% using rolled aluminum foil. The consumption of rolled aluminum foil is 35000 tons. With the increasing awareness of people's health and the impact of imported cigarettes from abroad, the growth in demand for cigarette foil has significantly slowed down, and it is expected to slightly increase in recent years. China's cigarette packaging foil accounts for 70% of the total amount of double zero foil. Currently, there are two or three domestic enterprises that can produce high-quality cigarette foil, with a technical level comparable to the international level. However, there is a certain gap in the overall quality of domestic cigarette foil compared to the international level.
（3） Decorative foilDecorative foil is a decorative material applied in the form of aluminum plastic composite, utilizing the characteristics of good coloring and high photothermal reflectivity of aluminum foil. Mainly used for decoration in buildings and furniture, as well as packaging in some gift boxes. The application of decorative foil in China's construction industry began in the 1990s, rapidly spreading from central cities such as Shanghai, Beijing, and Guangzhou to various parts of the country. In recent years, the demand has increased sharply, and it is generally used as a decorative material for the interior walls of buildings and indoor furniture. It is also widely used in the storefronts and interior decoration of commercial institutions.Decorative foil has advantages such as thermal insulation, moisture resistance, sound insulation, fire resistance, and easy cleaning. Moreover, it has a luxurious appearance, convenient processing, and fast construction and installation speed. The construction and home decoration industry in China has formed a trend of using decorative foil. With the rapid development of China's construction industry and the continuous popularization of decorative foil applications, the demand for decorative foil will continue to increase significantly. In addition, the use of decorative foil packaging gifts is very popular abroad, and in recent years, the development speed in China has been very fast, and it is expected to have good prospects.
（4） Cable foilCable foil is a composite foil made of aluminum and plastic, which utilizes the sealing and shielding properties of aluminum foil and is coated with plastic film on one or both sides. It is used as a protective cover for cables. Cable foil requires a surface with minimal oil content, no pores, high mechanical properties, and overall quality requirements, but extremely strict length requirements.Domestic advanced cold rolling mills, ten thousand rolling mills, and aluminum foil roughing mills can all produce, but the market growth is poor, with an annual demand of about 25000 tons in China.
