Maoming preferred copper foil processing
In order to improve the bonding strength of copper foil to the substrate, oxidation is usually used (that is, after oxidation treatment, a layer of copper oxide or cuprous oxide is formed on the surface, which improves the bonding strength of copper foil and substrate due to the polarity) Or roughen the copper foil (a roughened layer is generated on the surface of the copper foil by electrochemical method, which increases the surface area of the copper foil and improves the bonding strength between the copper foil and the substrate due to the anchoring effect of the roughened layer on the substrate).
Maoming preferred copper foil processing
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.
Maoming preferred copper foil processing
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.
Maoming preferred copper foil processing
The electrolyte contains oil, paint, grease, sediment and other contaminants attached to the surface of copper foil. After being squeezed by the squeezing (water) roller, the contaminants are squeezed flat, some contaminants attach to it, and some contaminants attach to the guide roller. Because the dirt is squeezed up during the operation, the dirt has a head and a tail, and has a direction.
Maoming preferred copper foil processing
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.
