WRG Waterring Pelletizer

The waterring pelletizers from Coperion have been in successful operation for many years. They are the result of long years of development work and are suitable for the pelletizing of most thermoplastics, including filled and reinforced products.

In waterring pelletizers, the cooling and transport medium, water, does not come into contact with the die plate. The circulating knives cut the melt strands and fling the hot molten pellets into the circulating waterring. The water flow conveys the pellets out of the pelletizer hood.

Waterring pelletizers have a very compact design and feature low investment and operating costs as well as a simple start-up process.

WRG waterring pelletizer from Coperion
WRG waterring pelletizer from Coperion

Technical data of the WRG water ring pelletizer

WRG water ring pelletizerWRG 280WRG 300WRG 320WRG 400
Max. permissible pressure of the heating medium* [bar]32323240
Drive power / min. installed motor power [kW]7.59.21730
Water circulation rate [m³/h]9090120200
Max. throughput rate ** [t/h]34.5712
WRG waterring pelletizer from Coperion
Waterring pelletizer from Coperion

Special features and advantages of the waterring pelletizer

Simple start-up process
Even die plate temperature
No freezing of bores at low hole throughput
Uniform pellets with simple die plate design
Low pressure build-up of the die plate
Nozzle geometry is widely variable
No cavitation on the die plate
Compact design
Low investment costs
Low operating costs, among other things due to low energy requirements for heating and drive, low wear, low-cost spare parts and simple operation
All parts are salt bath-resistant