Patent ID: 7470118

Claim:
An underwater cutting pelletizer wherein a die plate having nozzles through which molten material to be processed is extruded and a cutter for cutting the to-be-processed material extruded from the nozzles into granules are installed therein and a water chamber is provided for flowing of cooling water therein to cool the cut granules and transfer the granules to an exterior, wherein the water chamber is in a circular shape and has an inlet portion on one side in a diametrical direction thereof to introduce cooling water into the water chamber and an outlet portion on the other side in the diametrical direction to discharge the cooling water from an interior of the water chamber to the exterior, a first cross section of the inlet portion increases continuously in an inflow direction of the cooling water, the first cross section being parallel to a circular surface of the water chamber, and a width of a second cross section of the inlet portion is substantially constant along the inflow direction, the second cross section being orthogonal to the circular surface of the water chamber.