How does press for slabs work

In the hermetic pressing method, two concrete layers are compacted hydraulically. The first layer is rather liquid when it is filled into the mould. For this, the mould frame has to be sealed hermetically with the lower surface (face plate). This is what gives this method its name. In the next step, an earth-moist second concrete layer is put (dosed) onto the first layer, and both layers are compacted hydraulically.

For short cycle times, the manufacturing process is carried out in several steps. These are distributed cyclewise to the individual stations of the press. Depending on the type, the presses are equipped with six or seven stations. For presses with a pressing power of up to 500 tons, station 5 "Pre-compaction" is not required.