Aluminium foil serves as a shielding layer and outer conductor of RF cables due to its excellent conductivity and shielding properties. It effectively blocks radio frequency interference, preventing signal loss and ensuring data integrity. This makes it an essential component in the construction of RF cables, particularly in environments with high levels of electromagnetic interference. The term "bonded aluminium foil" refers to a type of aluminium foil that has been adhered to another material, typically a plastic film, to enhance its strength and durability. This bonding process improves the foil's tear resistance, making it less likely to be damaged during installation or use.