Vacuum Potting Equipment

Integrating a vacuum chamber with the Ashby Cross meter, mix system provides an excellent method to encapsulate or pot electronic circuits in a controlled atmosphere. Several steps are taken to ensure air-free potting compound.

• Material is degassed to as low as 3 Torr in the reservoirs. Heat may be added at this step to ensure wet out and complete de-airing.
• Air free material enters the metering cylinders at which point the ratio is established.
• Proportioned material is then mixed and dispensed into the part within a controlled atmosphere (vacuum) in the chamber. The vacuum level in the chamber may be as low as 3 to 5 Torr and can be varied as needed.
• Multiple passes can be done within the chamber at different vacuum levels to ensure complete wet out.
• The chamber may be manual or automatic as needed.