UNDERWATER PELLETISER

The degassed polymer granules are fed to a melting extmder and pelletised in an underwater pelletiser. If required, additives can be added to the melted polymer. The pelletiser water is recycled a small side-stream has to be discharged. The resulting waste water contains a small amount of hydrocarbons due to the direct contact with the pellets. 

At the end of the extruder, the rubber is extruded through a dieplate and pelletised. The pellets are cooled down by means of spray water, or by using underwater pelletisers. In this way, sticking of the pellets is avoided. 

The melted polymer is then transferred through a dye head to obtain strands that are cut (dry or underwater) by pelletisers. After drying, the pellets are discharged in a pneumatic conveyor and then stored in silos for packaging and/or shipping in bulk. 

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