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The Plast Agglomerator (Cont.)

The Hot Melt Granulator

Agglomerated material is drawn into the hot melt granulator.  The granules are equalized between the rotor and the stator knives.  Material makes contact with the double-walled water-cooled inlet section of the machine as the airflow cools the material.

The hole size of the screen installed in the hot-melt granulator determines the size of the end product.

The Sifter Unit

For the separation of dust particles a cascade sifter is used.  The cascade sifter is a vertical air duct.  Air flows through the cascade sifter from the bottom to the top, thereby separating the fines.

The de-dusted granules occur at the lower end of the cascade sifter where they can be conveyed.  Separated dust particles are re-introduced into the granulator.

Granules Cooler

Additional Cooling is necessary for many plastics in order to bring the granules to ambient temperature.  A granules cooler is used which operates on a counter flow cooling principle.  The hot granules enter the cooling chamber at the upper end of the granules cooler.  Counter airflow cools the granules.  The granules remain free flowing and do not cake in the downstream collecting bins.