Copper foil production

Electrolytic copper foil production process is the first copper oxide, copper sulfate solution was prepared, and then in foil machine Electrogenerated Health Health foil, raw foil pickling, coarsening, solidification, plated brass, obtained after the treatment process and finished goods . It includes two electrolysis and electroplating process. For example, a copper foil production company conditions: sulfuric acid concentration of 120g / L ,7-9KA / m2, anode and cathode gap of 12mm. IrTa anode can be used to meet production requirements, high current density to solve production problems. It uses part of the dip in the copper sulfate solution continuously rotating roller as the cathode metal, continuous electrolysis foil. Electrolytic copper foil as the conductive material used in the single-sided printed circuit board, the amount of increasing the thickness of thinner, from the thickness of 0.15mm, 0.105mm, 0.07mm, 0.05mm, 0.035mm.

Electrolytic copper foil, according to the thickness, can be divided into 105um, 70um, 18um, 12um, 9um, and several other 5um, 12um and 12um in which the following commonly known as ultra-thin copper foil.

According to surface treatment, can be divided into pink foil copper foil (surface copper), ash foil (surface galvanized), yellow foil (brass plated) and other types.

IPc electrolytic copper foil according to the performance standards will be divided into the standard foil (STD - E class), high extension foil (HD - E class), high-Wen Gaoyan foil (THE - E class) and annealed electrolytic copper foil ( ANN - E class), low temperature annealed electrolytic copper foil (LTA - E class), can be annealed electrolytic copper foil (A - E class) and other categories.

Japan in the manufacture of printed circuit board copper foil by electrolysis to produce copper sulfate solution, 1-2 meter in diameter, 2-3 meters high in titanium, copper cathode rotating cylinder, one end of the strip in the copper rotor. In the know when the printed circuit copper foil coated with titanium anode, the more highly about 1.3 meters, a length of about 2.4 m surface area, plate thickness of 25mm. Titanium-based anodes, plate spacing without adjustment, the anode produces oxygen bubbles stirring the electrolyte heated to accelerate the movement of copper ions to the cathode surface. Therefore, the operating current density can be increased to 50A/dm2, which significantly improves the cell's productivity. By thermal decomposition on titanium substrates coated IRO2 coating conditions in this medium can work well. Set the middle of very thin layers of platinum-plated to prevent oxidation of titanium substrate, the anode life of at least 2.5 years.

The use of titanium anodes in the copper production industry benefits:

1, 2 pole pitch stability, can improve the production capacity of 3, carrying high current, the current distribution

4, the copper foil 5 on the clean, low energy consumption 6, 7 and long working hours, easy to install, environmentally friendly