A vacuum is created between the material surface and the follower plate. The follower plate is lowered in a controlled manner only after the maximum or desired (adjustable) vacuum has been reached. The vacuum is regulated and controlled at all times until the follower plate is in contact with the material surface. This ensures that NO air enters the process!
This system ensures absolutely reliable drum changes in follower plate systems for highly viscous components. Furthermore, we increase work safety; there is no material loss and no risk of splashing.
An overview of drum change systems can be found here: