The simplest type of vacuum press uses a sealable bag and some form of vacuum generator. By placing materials in the bag, sealing it and then sucking out most of the air, a pressure differential is created between the reduced pressure inside the bag and atmosphere on the outside. It is this pressure differential that is used in vacuum pressing.
Vacuum flow rate - 0.4m3 per hour
Vacuum level - 85% - 8.5 tonnes per m2
Standard bag size - one bag @ 800mm x 1300mm
Maximum bag size - 1300mm x 1300mm