The TANDEM technology applied to the recycling of heavily printed, contaminated and high humidity plastic materials guarantees the excellent quality of the granule with notable energy savings in comparison with conventional recycling systems that foresee the re-extrusion of the material. The plant is composed of a COMPAC unit and two extruders arranged in succession.
The short, non-vented primary extruder and the larger diameter secondary extruder allow for a reduction of the cutting forces (“shear rate”) and stress less the melted material.Between the first and second extruders, there is a high performance degassing chamber. Here the surface of material exposed to vacuum is 10 times greater than the exposure of a normal extruder, guaranteeing the extraction of large quantities of gas and contaminants.

The first is allocated between the primary and secondary extruder, and the second filtration is installed before the pel- Altizer. In the case of highly contaminated materials, the first screen changer has the function of course filtration, while the second one allows for finer filtration of the material.