Strand pelletizers are used for cutting thermoplastic plastic strands.
The COLLIN strand pelletizer basic system has one drive – for a pre-defined pellet length of approx. 3 mm.
The strand pelletizer with two independent, variable drives enables the stepless adjustment of the pellet length from 0.8 up to 5 mm.
Moreover, COLLIN offers pelletizers, which are designed for more than two strands and for a higher take-off speed.
Depending on the customer requirements, underwater as well as die face pelletizers can be delivered:
UWG Underwater Pelletizing Systems
With this system, the polymer is directly cut at the die plate under water. Together with the water, the pellets are guided into the drying system, in which the water is separated from the pellets. The water system is tempered in order to enable a constant process. The pelletizer includes die plate, cutting device and the tempered water system. As option, COLLIN offers a polymer diverter valve.
The compact unit is mounted on a moveable frame and, by a clamping flange, it can easily be connected with the extruder.
The die plates are available in different die designs and heatings.
Die face pelletizer air-cooled
With this system, the polymer is directly cut at the outlet of the die plate. In contrast to the underwater pelletizing system, COLLIN uses a blower for creating an air flow in order to transport the pellets into a cyclone. The system includes a die plate, cutting device and a cyclone. The complete unit is mounted on a moveable frame and by a clamping flange, it can easily be connected with the extruder.
|Parameters / Pelletizer||SP 1||SP 2||SP max|
|Take-off speed or with increased speed: 7 – 70 m/min||3 – 36 m/min||3 – 36 m/min||20 – 90 m/min|
|Max. number of strands||1 -2||1 -2||10|
|Pellet size||approx. 3 mm Ø x 3 mm||approx. 3 mm Ø x 3 mm||3 mm Ø x 3 mm|
|Max. throughput||15 kg/h (bwith one strand)||approx. 15 kg/h (with one strand)||approx. 350 kg/h|
Max. throughput (LDPE) – 30 kg/h (with one strand)