| 摘要 |
The present invention relates to an internal heat medium oil circulation system for heating a screw for an extruder, and more specifically, to an internal heat medium oil circulation system for heating a screw for an extruder: which forms a heating space on the inner diameter of the screw for the extruder for increasing a melting speed and an extrusion speed in the extruder melting and extruding waste plastic for producing recyclable pellets, by heating the extruder at a melting and extruding temperature for performing a normal extrusion; and heats the screw by supplying a heat medium into the heating space from the outside. |
