Plasma Treatment Systems

By means of a high-voltage discharge (5–20 kV, 10–100 kHz) a pulsed electric arc is generated. A process gas, usually clean, dry compressed air flowing past this discharge section, is excited and converted to the plasma state. This plasma then passes through a jet nozzle to arrive on the surface of the material to be treated. The plasma nozzle is at earth potential and in this way largely holds back potential-carrying parts of the plasma stream. In addition, it determines the geometry of the emergent beam. Since Plasma is produced under a high voltage discharge environment an ordinary plasma nozzle exhibits blow out or arcing at the tip which may contact the electronic assembly resulting in damage to sensitive components. ANDA Plasma treatment nozzles offer a “current absorption loop” to eliminate the high voltage arc at the discharge cavity and safely treat sensitive electronics.

Plasma treatment removes contaminants while providing surface modification which facilitates adhesion of various coating materials. Additionally, plasma surface treatment promotes the flow of coating for thin film coating without other mechanical or chemical treatments required.

How Does Plasma Treatment Work?

The atmospheric plasma surface treatment system is composed of the plasma generator, compressed gas delivery, and plasma nozzle. High pressure gas and high frequency energy generates low temperature plasma through activated and controlled discharge in plasma head. With compressed air or gas directing the plasma to the surface of the product.