Shaoxing Optimized Ultra thin Copper Foil Processing
At the same time of thinning, it is also necessary to improve the tensile strength, elongation and other indicators, otherwise it is easy to cause copper foil fracture, affecting the safety of the battery. Therefore, it is the general trend that the future use will be more light and meet the above indicators.
Shaoxing Optimized Ultra thin Copper Foil Processing
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.
Shaoxing Optimized Ultra thin Copper Foil Processing
Calendered copper foil is the original foil made from copper plate by repeated rolling, and then roughened according to requirements. Due to the limitation of processing technology, its width is difficult to meet the requirements of rigid copper clad laminate, so calendered copper foil is rarely used on rigid copper clad laminate; However, because the bending resistance and elastic coefficient are greater than electrolytic copper foil, they are often used on flexible copper clad laminate.
Shaoxing Optimized Ultra thin Copper Foil Processing
According to the burning degree of the substrate in the flame and after leaving the ignition source, it can be divided into general type and self extinguishing type; According to the bending degree of the substrate, it can be divided into rigid and flexible laminates; According to the working temperature and working environment conditions of the substrate, it can be divided into heat resistant, radiation resistant, high-frequency foil clad plate, etc. In addition, there are also laminates used in special occasions, such as prefabricated inner laminates, metal based laminates, and copper foil, nickel foil, silver foil, aluminum foil, Kang copper foil, beryllium copper foil laminates according to the type of foil.
Shaoxing Optimized Ultra thin Copper Foil Processing
The production process of electrolytic copper foil is simple. There are three main processes: solution raw foil, surface treatment and product slitting. The production process seems simple, but it is a production process that integrates electronics, machinery and electrochemistry, and is particularly strict with the production environment. Therefore, the industry does not have a set of standard and universal production equipment and technology, and each manufacturer shows its own ingenuity, which is also an important bottleneck affecting the improvement of domestic production capacity and quality. In addition, the different requirements of customers have also resulted in the waste of many intermediate products copper foil in manufacturing. The one-time input-output ratio is even less than 80%, and these copper foils have to be manufactured again, wasting resources.
Shaoxing Optimized Ultra thin Copper Foil Processing
The technical feature of electrolytic copper foil is that various technical conditions in electrolyte and additives must be strictly controlled, so equipment alone is not enough to produce high-performance copper foil; High performance has high requirements for the materials of anode plate and cathode roll in the raw foil equipment, the processing accuracy and consistency of the equipment; In the production process, the concentration of copper and acid in the electrolyte needs to be monitored and adjusted in real time.
