Discarge devices

Container discharge station

Areas of application:

  • Adhesives and sealants
  • Coating compounds
  • Fillers
  • Modelling materials

Process description

Special presses and discharge devices enable interchangeable containers with diverse shapes to be emptied at discharge pressures of up to 100 bar. Depending on the product, one or more hydraulic cylinders can be built into the press. A vacuum cover enables the container to be evacuated before being emptied. Thus, the product will be air-free once it arrives at the filling station. The lifting frame can be adjusted hydraulically to the required filling height.

Buffer press

In order to ensure an efficient and continuous production process of sealants and in order to avoid bottlenecks at the filling stage, a buffer press is used to intermediately store the readily mixed product before the filling stage.

The presses can be used both for batch and continuous processes.

Various sizes are available according to the requirements:

  • VBP 30 to VBP 2000
  • Discharge pressures of 6 to 30 bar


Filling and buffering

The buffer container is positioned vertically and is limited by the fixed lower base plate and the movable upper press plate in the cylindrical container wall. The press plate is sealed towards the inner wall (carbide coating) of the container, which makes it product-tight and vacuum-tight.

For filling, the buffer container is evacuated via a vacuum valve after the press plate has been lowered. Then, the product is fed in via a ball valve in the base plate. The press plate is pressed up by the incoming product.

Depending on the product requirement, the buffer press can be designed with a heating or a cooling unit in order to appropriately condition the product – also over longer periods of time.

Discharging and cleaning

The product can be removed directly from the closed buffer container via ball valves in the container bottom. In order to do so, the press plate is lowered hydraulically and the product is discharged at pressures of up to 30 bar. At the same time, the container wall is cleaned by the wipers on the press plate. Product residues between base and press plate only have to be removed in case of a product change. In that case, the container casing is lifted hydraulically from the base. Subsequently, the press plate is lifted up so that both the press plate and the base plate can easily be reached and cleaned. If the product does not change, the buffer press can be operated for months without having to be cleaned.