Shenzhen Preferred 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.
Shenzhen Preferred Copper Foil Manufacturer
Copper foil can be divided into many kinds according to different classifications. According to the thickness, it can be divided into: thickness (more than 70 μ m) Regular thickness copper foil (more than 18 μ M but less than 70 μ m) Thin copper foil (more than 12 μ M but less than 18 μ m) Ultra thin copper foil (less than 12 μ m) Etc.
Shenzhen Preferred 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.
Shenzhen Preferred Copper Foil Manufacturer
Copper foil is divided into calendered copper foil and electrolytic copper foil according to the preparation process, which accounts for the vast majority of the market. According to the Copper Foil Branch of China Electricity Association (CCFA), at present, domestic manufacturers mainly focus on the production of electrolytic copper foil. In 19 years, the domestic production capacity of electrolytic copper foil is expected to be close to 600000 tons, while that of rolled copper foil is only about 10000 tons.
Shenzhen Preferred Copper Foil Manufacturer
Small dirt, small exclamation mark. During the production of raw foil, the hair side is upward, and the dirt in liquid and air all fall on the hair side, which is printed on the smooth side after rolling. The reason is that the stains on the cathode roll are not dried. The surface temperature of the cathode roll is only 50 degrees, and the air temperature in the workshop is generally about 25 degrees. The surface hairiness is very good. The dirt itself has water, and the drying time is only 2-3 minutes. Therefore, the dirt on the copper foil cannot be completely dried.
Shenzhen Preferred Copper Foil Manufacturer
The foil of the clad plate can be copper, nickel, aluminum and other metal foils. However, considering such factors as the conductivity, solderability, elongation, adhesion to the substrate and price of gold, it is considered appropriate except for special purposes.
