Calendered copper foil Definition: It is made of copper ingots as raw materials through hot pressing, tempering toughening, scaling, cold rolling, continuous toughening, pickling, calendering, degreasing and drying processes.

Defects of rolled copper foil:

1. The production process is complex, the process is long, the one-time investment is high, and the cost is high.

2. The limit thickness of copper foil is limited.

3. The quality requirements for rolls are also very high. The diameter of the roll must meet the requirements of the minimum thickness of the rolled piece, but the smaller the thickness of the copper foil, the smaller the diameter of the roll and the higher the processing accuracy of the roll.

4. The width of the copper foil is also limited by the roll. As the length of the roll increases, the roll swing also increases.

5. The surface roughness of rolled copper foil is low, and the flatness and appearance consistency ratio Electrolytic copper foil Poor, but with high ductility.