extruder having a melt flow improved extrusion head

摘要

An extruder is provided to prevent molten resin from staying around the breaker plate by contacting the cone part with the center of eth mesh or breaker plate, thereby improving the flow of resin. An extruder comprises a barrel(100), a screw(200), a reducer assembly(300), a screen mesh(400), and a breaker plate(500). The reducer assembly is combined in the leading end of the barrel, and has a tapered inner wall(301) and an extruding port(302) formed from the inner wall toward a molding unit. The screen mesh is installed on the inner wall or the extruding port. The breaker plate is installed on the reducer assembly in order to support the screen mesh. The screw has a tapered cone part(210) which contacts the central surface of the screen mesh or the central surface of the breaker plate through the center of the screen mesh.