Prevention of special waste by removing strongly adhering auxiliary products on electronic components using solvent-free agents

To clean electronic components from strongly adhering mineral oil impregnation agents, hard resins, and remnants of fluxing agents a belt conveyor jet cleaning system was designed. The continuous jet spray system consists of four cleaning and rinsing chambers with subsequent drying chamber. An electrolyte-rich, liquid neutral cleaner (Grisiron 8527) was used as the cleaning agent. According to the nigrosine test, the oil and grease contamination amounts to less than 25 ng/m². Ultra filtration of the rinse and cleaning liquors enables their further utilization and recycling (further information in German).

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Source: Environmental library of the Federal Environment Agency (UBA)