How To Reduce The Overall Size Of The Pelletizing Machine

How to reduce the overall size of the pelletizing machine

The present invention thus constructed makes it possible to reduce the overall size of the pelletizing machine and hence use the space efficiently on condition that the pelletizing machine has the same production capacity as the conventional twin screw extruder. In particular, the extrusion unit 1 is of the vertical type so that when the overall size of the pelletizing machine is reduced to cope with the multi-product, small-quantity production system, various maintenance works can be achieved easily.

As is apparent from the foregoing description, the synthetic resin pelletizing machine of the present single screw extruder is compact as a whole and, hence, is able to use the space efficiently. In addition, the pelletizing machine can respond to the need for downsizing, is able to obviate the need for troublesome maintenance even though a vertical-type extrusion unit is used, and is adaptable to the multi-product, small-quantity pet recycling

system. The vertical-type extrusion unit provides a smooth extrusion mechanism for a melted resin. More specifically, since the raw material is supplied obliquely into the extrusion cylinder and toward the extrusion direction, the raw material is smoothly advanced by the extrusion screw without clogging at the inlet of the extrusion cylinder. The raw material while being advanced in the compounding extruder cylinder is plasticated and kneaded homogeneously. The strand extruded from the die head reaches the cooling unit by its own weight, so that an extruded, incompletely solidified strand is not subjected to undue bending forces. Thus, pellets produced from the strand has high dimensional accuracy.

Obviously, various minor changes and modifications of the present pelletizing machine are possible in the light of the above teaching. It is therefore to be understood that within the scope of the appended claims the invention may be practiced otherwise than as specifically described.

by: wan

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