How to get the best from your impregnation plant
Checking Out The System – Vacuum for impregnation
Vacuum for impregnation
As distinct from vacuum drying, the vacuum cycle (dry vacuum) for impregnation can be short especially when carried out at elevated room temperatures. This is specially so for virgin components that have been kept clean and dry. Generally a vacuum of between 20 and 10 mbar is adequate for most applications. This ensures that the free air has been removed. Anything below 10 mbar would appear to have little effect other than removing absorbed air and monomer from the sealant.