Shielding electrolytic copper foil is one of the important basic materials in China's electronic information industry

       Electrolytic copper foil for shieldingIt is obtained by electroplating and depositing copper sulfate electrolyte using cathode rollers and anode plates. During the production process of electrolytic copper foil, copper is continuously deposited from the electrolyte, which requires the supplementation of copper ions (Cu2) in the electrolyte to maintain the balance of electrolyte indicators In the conventional production process of electrolytic copper foil, the replenishment of copper ions in the electrolyte is achieved by using low copper content electrolyte from system pipelines and storage tanks to flow through tanks storing copper wires or plates, in order to obtain electrolyte rich in copper content. This tank is called a copper dissolution tank Copper wire or copper plate is a process of oxidation dissolution in copper dissolution tanks. Due to the influence of factors such as dissolution temperature, contact area with acid, and electrolyte saturation around the copper material, the dissolution ability of copper material in copper dissolution tanks is often poor.

According to the requirements of product quality and application fields, electrolytic copper foil can be divided into ordinary electrolytic copper foil and high-end (high-performance) electrolytic copper foil. Ordinary electrolytic copper foil is mainly used in ordinary printed circuit boards and copper-clad laminates; High end (high-performance) electrolytic copper foil mainly includes electrolytic copper foil for lithium-ion batteries, electrolytic copper foil for flexible boards, electrolytic copper foil for low profile high-frequency circuits, electrolytic copper foil for HDI boards, electrolytic copper foil for automotive boards, high-temperature stretchable electrolytic copper foil (HTE foil), low profile electrolytic copper foil (LP foil), very low profile electrolytic copper foil (VLP foil), electrolytic copper foil with 9 μ m and below carriers, etc.
         Electrolytic copper foilIt refers to metal copper foil produced by electrolytic method using copper as the main raw material. After dissolving the copper material, a copper sulfate electrolytic solution is made, and then the copper sulfate electrolyte is made into foil by direct current electrodeposition in a dedicated electrolysis equipment. It is then subjected to a series of treatments such as surface roughening and oxidation prevention, and finally cut and tested to produce the finished product.