In the manufacture of printed circuit boards, fiber-reinforced plastics are coated with copper layers. Subsequently, the conductor tracks are etched from the flat copper layers and the respective components are soldered to the circuit board.
The cleaning of printed circuit boards is an essential process step to remove impurities such as film-like or particulate residues from flux, resin or soldering paste. The impurities may cause electrical failures and corrosion of the circuit boards or assemblies. Often, single-chamber, multi-chamber and continuous flow cleaning systems are used for this purpose.
The purification process significantly influences the product lifetime and increases their reliability. As electrical parameters of the electronic components are being improved by purification, continious bath control is of enormous importance.