Function
The system is fed
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either directly via pipes and edge trim cyclone (1) with endless edge trim but optionally also via conveyor belt (2) (loose waste, KAG 605 and KAG 806 only) or via reel feeder (3) (film from rolls). Combinations of all feeding methods can be used within limits, increasing the flexibility of the system. If required, the system can be equipped with a fully automatic control system to adjust the plant throughput to varying amounts of incoming edge trim which must be reprocessed immediately and fed back into the extrusion line.*
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The material is processed
| ... in the cutter/compactor (4). Here the material is cut, dynamically homogenised, heated and predensified at the same time, all in one working step. The fast rotating cutting knives, which can be replaced in a few minutes without readjusting, fill the extremely short (approx. 7 D) single-screw extruder (5) efficiently and continuously which is directly connected to the cutter/compactor. In this special, patented extruder the processed material is only partially melted and pelletised (6) in this form. This makes reprocessing on the one hand extremely cost efficient and supplies almost not heat degradation, on the other hand it allows, in most cases, the use of air cooled hot die face pelletising systems.
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The product (7)
... the system produces is a granulate with high, uniform bulk density and excellent flow characteristics, ideal for further direct processing to make end products. The system is not suitable for processing low viscosity "sticky" polymer melts such as PP, PET, PA and mixtures of those materials.
