Stuttgart, March 2018 – As the central component of Coperion's eccentric pelletizing systems (EGR), a new type of knife rotor makes it possible to produce extremely low-dust PVC pellets for cable manufacture. Rotating directly on the die plate of the EGR, and fitted with pelletizer knives that have also been optimized, the rotor (patent pending) permits particularly smooth and gentle cutting of temperature and shear-sensitive plastics. This greatly improves the quality and further processability of the pellets produced as compared to the types previously available. Coperion will be presenting the new knife rotor for the first time at Wire 2018, taking place in Düsseldorf from 16 to 20 April, at Booth 14A05 in Hall 14.
To achieve this progress, Coperion specified a special metal alloy and design for the production of both the new rotor and the knives mounted on it. Due to these technical optimizations the knives remain in particularly even contact with the die plate during operation. The result is very high cutting quality that forms the basis for achieving the desired substantial reduction of the proportion of fines in the pellets.