COLD FEED EXTRUDER TO HAVE SUPERSONIC OCCURRENCE PIN

摘要

PURPOSE: A cold feed extruder having pins generating ultrasonic wave is provided to reduce the length of a barrel for temperature rise by installing an ultrasonic generation pin. CONSTITUTION: A cold feed extruder comprises a screw(207) and an ultrasonic generation pin(201). The screw is installed inside a barrel(203). The ultrasonic generation pin is installed between flights(205,205') of the screw. The length of the barrel of the cold feed extruder is 11~14D.