Jiangmen Preferred Battery Copper Foil Manufacturer
Electrolytic copper foil is made by dissolving copper into copper sulfate solution, electrodepositing the copper sulfate electrolyte under the action of direct current in special electrolytic equipment to make the original foil, and then carrying out surface treatment, heat-resistant layer treatment, oxidation prevention treatment and other surface treatment processes on the original foil according to customer requirements.
Jiangmen Preferred Battery Copper Foil Manufacturer
During the production of copper foil, tiny foreign matters are adhered on the surface to form spots with different colors from the surface, which are called stains. Judgment method: use macroscopic inspection to judge whether it is a waste product, a secondary product or a finished product according to the number and area of stains and the impact on product quality.
Jiangmen Preferred Battery Copper Foil Manufacturer
If the surface stain is caused by environmental problems, the cleaning and improvement of the air conditioning filter system should be strengthened, or the wind speed should be reduced, and the small hairs on the air conditioning filter bag must be completely removed. And the fibers and powders on the polymer materials must be completely removed, which are very easy to cause stains. The air supply pipeline is easy to use plastic material, which does not produce fiber and is easy to clean with water, acid and alkali.
Jiangmen Preferred Battery Copper Foil Manufacturer
The calendered copper foil is made by repeated rolling annealing process of copper ingot based on the principle of plastic processing. Its internal structure is lamellar crystal structure, and the product has good ductility. At present, it is mainly used in the production of rigid circuit boards, while the rolled copper foil is mainly used in flexible and high-frequency circuit boards.
Jiangmen Preferred Battery Copper Foil Manufacturer
The adhesives used for the laminates mainly include phenolic, epoxy, polyester, polyimide, polytetrafluoroethylene resin, etc. Therefore, the laminates are also divided into phenolic, epoxy, polyester, polyimide, and polytetrafluoroethylene laminates.
Jiangmen Preferred Battery 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.
