The HV 70 plastcompactor is the most powerful of the series from Herbold Meckesheim. It processes the feedstock in continuous operation between a rotating and a fixed compactor disk, which are equipped with screwed-on and easily exchangeable kneading bars. Through the center of the stator disc, a stepless adjustable feeding screw continuously transports granulated material from the buffer silo into the working zone in a controlled manner. Since the rapidly warmed up material leaves the compactor zone within fractions of a second, the thermal impact on the plastic is very low. The process is regulated by two degrees of freedom – both by the speed of the screw and by the distance between the disks.
HV plastcompactors can be used to agglomerate a wide variety of materials into products of high bulk density: thermoplastics such as fibers, fine particles, small tapes, foams, stretch or thin films, powders or shavings, as well as plastics that are difficult to convey, stock or mix. Compactors are also often installed downstream of washing lines. With a subsequent agglomeration – in conjunction with a secondary granulator and a classifier – residual humidity of less than one percent can be achieved, allowing direct further processing in an injection molding machine or a standard extruder.
As part of the latest enhancements, the disk geometry of the HV 70 plastcompactor has been significantly redesigned. In combination with improved automatization of the plastcompactor and a more compact design, manual intervention during operation is required much less frequently, which offers customers a new level of operational reliability. On the other hand, the silo and feeding device have been further developed in such a way that even more complex materials with the lowest bulk densities and the most difficult flow characteristics can be handled safely.