Foshan Preferred Copper Foil Manufacturer of Lithium Battery
Excellent tensile strength and elongation High tensile strength and elongation under normal conditions can improve processing ability, enhance rigidity and avoid wrinkles to improve production qualification rate. High temperature extensibility (THE) copper foil and high tensile strength copper foil at high temperature can improve the thermal stability of printed boards and avoid deformation and warpage.
Foshan Preferred Copper Foil Manufacturer of Lithium Battery
Backward key production equipment: for high-quality products with production thickness less than 0.05mm, multi roll rolling mill with width meeting user requirements shall be used. The rolling mill of some domestic copper processing plants can not be normally put into rolling foil production due to the lack of other equipment or the traditional product structure in the factory. However, some small processing plants have to use outdated production equipment and processes due to lack of key equipment or investment capacity, and copper foil product specifications and technical indicators are inferior to foreign products.
Foshan Preferred Copper Foil Manufacturer of Lithium Battery
With the development of high-density wiring technology for low profile copper foil multilayer boards, the traditional type cannot meet the needs of manufacturing high-precision printed circuit boards. Therefore, a new generation of copper foils, low profile (LP) and ultra-low profile (VLP), have emerged one after another. Compared with ordinary electrolytic copper foil, LP copper foil has fine crystal (2/zm), equiaxed grains, no columnar crystals, lamellar crystals, flat prisms and low surface roughness.
Foshan Preferred Copper Foil Manufacturer of Lithium Battery
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.
