During the rolling process, the copper undergoes annealing, a heat treatment that improves its flexibility and removes any internal stresses.
Once the copper reaches the desired thickness, it is further processed to achieve specific surface qualities, such as matte, half-matte, or shiny finishes.
This type of copper foil has uniform thickness and excellent electrical conductivity, making it ideal for high-performance electronic applications.
Ultra-thin copper foil is an extremely thin variant used in specialized applications where space is limited, such as in RFID tags and smart cards.
Some of the major applications include: [5] Copper foil is a crucial component in the manufacturing of PCBs, which are the building blocks of electronic devices.