Aluminium film refers to a thin layer or sheet made from aluminium, a lightweight, silvery-white metal. The film consists of a continuous and uniform coating of aluminium on a flexible substrate, commonly made of a polymer material. It is utilized in various industries due to its remarkable properties and versatility.
Aluminium film is established through a process known as vapour deposition or sputtering, where aluminium is evaporated or bombarded with high-energy particles to obtain a thin layer that adheres to the substrate. The thickness of the film may vary depending on the intended application, usually ranging from a few nanometers to micrometers.
The film's primary characteristic is its excellent barrier properties, making it impermeable to moisture, light, and oxygen. This feature makes aluminium film ideal for packaging applications, such as food packaging, where it provides effective protection against spoilage or contamination. Additionally, its reflective properties make it suitable for insulation purposes, as it helps to minimize heat transfer through walls or windows.
Furthermore, aluminium film possesses good electrical conductivity, which enables its utilization in electronic devices, circuit boards, and electrical insulation. It can also be employed in the production of reflective tape, solar panels, and capacitors due to its reflective and conductive properties.
Overall, aluminium film is a thin, flexible sheet made from a layer of aluminium, offering outstanding barriers to moisture, light, and oxygen, as well as beneficial electrical and reflective characteristics that make it valuable in packaging, insulation, electronics, and other industries.
