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Copper Foil
Copper foil is a thin sheet of copper metal , ranging from 1μm to 210μm, that is widely used in various applications due to its excellent electrical conductivity, malleability, and corrosion resistance. It is an essential material in the electronics industry, especially for manufacturing printed circuit boards (PCBs) and other electronic components. Manufacturing of copper foil involves several steps, including casting, rolling, annealing, and finishing.
Copper Foil is available types:
- Electrodeposited Copper Foil
Electrodeposited copper foil, also known as electrolytic copper foil, is produced by electroplating copper onto a rolling drum in a highly controlled manner. This type of copper foil has uniform thickness and excellent electrical conductivity, making it ideal for high-performance electronic applications.
- Rolled Annealed (RA) Copper Foil
Rolled Annealed copper foil is produced through a rolling and annealing process, as described earlier. It offers good flexibility and is commonly used in flexible printed circuit boards (PCBs) and other applications where flexibility is required.
- High-Temperature Rolled Annealed (HTRA) Copper Foil
High-Temperature Rolled Annealed copper foil is similar to RA copper foil but undergoes additional heat treatment to enhance its resistance to high temperatures. This type of copper foil is used in applications that involve exposure to elevated temperatures.
- Ultra-Thin Copper Foil
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.

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