Ningbo Preferred Conductive Copper Foil Manufacturer
Copper foil is not a traditional metal copper product. It combines design concepts such as composite material and nano material technology, and different internal microstructures, resulting in different properties from traditional pure copper. The application of copper foil mainly focuses on the characteristics of conduction, heat conduction and electromagnetic wave shielding.
Ningbo Preferred Conductive Copper Foil Manufacturer
With electrolytic copper or wire return material of equal purity as raw material, it is dissolved in the solution containing copper sulfate. Electrolysis is carried out in an electrolytic cell with insoluble material as anode and cathode roller immersed in copper sulfate electrolyte at constant speed as cathode. Copper in the solution is deposited on the surface of cathode roller to form copper foil. The thickness is controlled by cathode current density and cathode roller speed. After the roller rotates out of the liquid level, it is continuously stripped from the cathode roll, washed, dried and rolled to generate the original foil.
Ningbo Preferred Conductive Copper Foil Manufacturer
During the production of copper foil, tiny foreign matters are adhered on the surface to form spots with different colors from the surface, which are called stains. Judgment method: use macroscopic inspection to judge whether it is a waste product, a secondary product or a finished product according to the number and area of stains and the impact on product quality.
Ningbo Preferred Conductive Copper Foil Manufacturer
Copper foil can be divided into calendered copper foil and electrolytic copper foil, which are mainly used for flexible printed circuits and other special purposes. In the production of clad laminates, a large number of applications are. As for the purity of copper, IEC-249-34 and Chinese standards stipulate that it shall not be lower than 99.8%.
