Lishui Preferred Circuit Board Copper Foil Manufacturer
Electronic circuit copper foil plays an important role in conducting electricity and heat in printed circuit board (PCB), and is known as the neural network on PCB. At present, copper foil for electronic circuits (PCB copper foil) is divided into two categories, namely conventional copper foil and high-performance copper foil.
Lishui Preferred Circuit Board Copper Foil Manufacturer
The production of extremely thin copper foil has high barriers, and the products produced still need to meet many requirements of downstream lithium ion battery manufacturers. For investors, they should not only focus on the single index of thickness, not all manufacturers produce 6 μ M Copper foil is consistent, and the thinner the better.
Lishui Preferred Circuit Board Copper Foil Manufacturer
With the further competition in the market, even those with high added value have to be controlled from the production cost. Because the production requires very strict cleanliness of its electrolytic solution (copper sulfate solution), many filtration systems and liquid feeding pumps are repeatedly used in previous production processes. A new process flow is provided here, which can fundamentally control product quality and reduce production costs.
Lishui Preferred Circuit Board Copper Foil Manufacturer
In order to avoid the copper oxide powder falling off and moving to the substrate, the surface treatment method has also been constantly improved. For example, TW copper foil is coated with a thin layer of zinc on the roughened surface of the copper foil, and the surface is gray; TC type copper foil is coated with a thin layer of copper zinc alloy on the roughened surface of the copper foil. At this time, the surface of the copper foil is golden yellow. After special treatment, the thermal discoloration resistance, oxidation resistance and cyanide resistance of copper foil in PCB manufacturing are improved accordingly.
