Rubber side feeding in TPE/TPV compounding
The VMI Planetruder is very suitable for continuous and accurate feeding of rubber into a TPE/TPV compounding extruder.
The planetary gear pump ensures a feeding precision higher than ±0.25%. Compared to cold pellet feeding, the Planetruder compounding process is much simpler. A constant flow of pre-heated rubber enters the compounding extruder at even temperatures. The single-drive, compact design allows for easy installation and takes up little floor space. The machine is fed by strips, avoiding the need for rubber pelletizing.
The VMI Planetruder is a combination of a single screw cold feed extruder and a volumetric operated planetary gear pump. The rubber strips are fed into the Planetruder and plasticized by the screw, while the planetary gear pump provides exact dosing. The gear pump housing is part of the extruder barrel, making sure that there is no leakage from the planetary gear pump.
The VMI Planetruder is a complete extruder gear pump system fitted with an interface and adapter flanges for easy connection to mixing extruders.