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Heyuan Preferred Electronic Copper Foil Manufacturer

Release time: 2023-09-10 00:25:49
 Heyuan Preferred Electronic Copper Foil Manufacturer

Heyuan Preferred Electronic Copper Foil Manufacturer

Calendered copper foil is a product made by repeatedly rolling and annealing high-precision copper strip (usually less than 150 microns in thickness) based on the principle of plastic processing (usually 4-100 microns in thickness and<800 mm in width). Its ductility, bending resistance and conductivity are better than those of electrolytic copper foil, and the copper purity is also higher than that of electrolytic copper foil.

 Heyuan Preferred Electronic Copper Foil Manufacturer

Heyuan Preferred Electronic Copper Foil Manufacturer

The surface of the copper foil shall be smooth and clean without obvious wrinkles, oxidation spots, scratches, pitting, pits and stains. The porosity of 305g/m2 and above shall not exceed 8 penetration points within the area of 300ram × 300mm; The total area of pores on an area of 0.5m2 shall not exceed the circular area with a diameter of 0.125mm.

 Heyuan Preferred Electronic Copper Foil Manufacturer

Heyuan Preferred Electronic Copper Foil Manufacturer

Speaking saliva splashes on the surface, and stains will appear when saliva is rolled up. A short time is a dark point, and a long time is a dark point. The size of the point is related to the saliva splashed on the copper foil.

 Heyuan Preferred Electronic Copper Foil Manufacturer

Heyuan Preferred Electronic 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.

 Heyuan Preferred Electronic Copper Foil Manufacturer

Heyuan Preferred Electronic Copper Foil Manufacturer

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.