How can the copper foil manufacturer identify whether the copper foil is qualified? With the development of social industry, Electrolytic copper foil It has been widely used in many fields, which has helped to promote the development of social economy to a large extent. Although China is poorer in copper resources than other countries, it is one of the countries in the world that mainly produce refined copper. Therefore, with the increasing demand for electrolytic copper foil, we should know what requirements it has and what characteristics are qualified electrolytic copper foil.

1. Requirements for oxidation resistance:

The development of manufacturing technology has not only increased the requirements on the accuracy of the manufacturing route, but also on the oxidation resistance. It is required that the copper clad laminate forming the printed circuit board can withstand higher temperature and longer heat treatment than in the past, and at the same time, the resistance to thermal oxidation and discoloration of the welding surface (copper foil smooth surface) should also be increased accordingly. Only high oxidation resistance can better meet the requirements of current production processes. In this rapidly developing society, only adaptation and improvement can develop.

2. Requirements for appearance quality:

The two sides of the copper foil must not have defects that affect the life, usability or appearance of the copper foil, such as scratches, indentation, wrinkles, dust, oil, corrosives, fingerprints, pinholes and penetration points.  

3. Requirements for mass per unit area:

Under the same manufacturing process, the thickness of the copper foil is inversely proportional to the accuracy of the manufacturing route. The thicker the copper foil is, the lower the accuracy of the manufacturing route is, and the quality of the copper foil is easier to control. Therefore, the requirements for the manufacturing process are getting lower and lower. With the development of society and the continuous improvement of electronic level, the requirements for copper foil production lines are getting higher and higher. 0.012mm copper foil, 0.009mm and 0.005mm carrier copper foil have received recognition and welcome.