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GraviCon CPD

Gravimetric dosing unit for poorly flowing materials

Dosing units of the CPD series are especially designed for extrusion and allow the conveying of poorly flowing materials as chalk, fibres, chips, scrap, PET mill material etc..

New materials in particular can not be conveyed by conventional dosing units. The increased processing of WPC (wood plastic composites), natural materials for colouring, recycling and poorly flowing materials have been the reason for developing the GraviCon CPD conveying units.

The housings have a solid design and are made of stainless steel/aluminium. Due to the parallel position of especially developped conveying and dosing screws, the material dosing is secure and accurate. Inside the material storage container an integrated agitator avoids bridging and ensures that conveying and dosing screws are constantly filled.

Corresponding to processed material and requested throughputs the conveying is carried out by twin screws, blade screws or spiral screws. Due to a special sealing and positioning of both screws towards drive unit, material leakage on the driving side of the device is not possible.

Three-phase asynchronous motors ensure the long-life cycle of the system.

Stand-alone device „GraviCon CPD10“ incl. material storage container & operating station
(photo incl. weighing technology, optional)

Application: Plastic pipes with core layer


  • Simple mechanical design
  • Nearly 100% screw filling level
  • Low wear and maintenance
  • External motor – no bulk material heating
  • Wide throughput range
  • Excellent price/performance ratio


Product range:

(*) Material: powder, apparent density up to 570 g/l

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