The underwater granulator is similar to the air flow granulator and the water jet granulator, except that it has a smooth water flow through the mold surface and is in direct contact with the mold surface. The size of the pelletizing chamber is just enough to allow the pelletizing knife to rotate freely across the die face without restricting the water flow temperature. The molten polymer is extruded from a die, the pellets are cut by a rotary knife, and the pellets are carried out of the pelletizing chamber by tempered water into a centrifugal dryer. In the dryer, the water is drained back to the holding tank, cooled and recycled; the pellets are passed through a centrifugal dryer to remove the water.

The pressurized forced feeding machine completely solves the problem that the cone double forced feeding machine is difficult to feed some materials.

Cone double and double wrist forced feeder

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