Aluminum foil and polyester film composition is commonly used as a shielding material for cables. It is made by laminating a layer of aluminum foil with a layer of polyester film using a special adhesive. This composite tape provides excellent shielding properties against electromagnetic interference (EMI) and radio frequency interference (RFI), making it ideal for use in high-frequency communication cables, data cables, and power cables. Additionally, it offers good tensile strength, flexibility, and durability, which make it easy to handle and install during cable manufacturing.