The present invention relates to the technical field of twin-screw extruders, in particular to a chamfered screw element of a twin-screw extruder. The screw element is axially hollow and provided with ratchets on the inner wall matching a mandrel. A screw formed by the mandrel and the screw element is arranged in a barrel of the twin-screw extruder, and the two screws are meshed with each other. The screw element comprises a reverse element and a forward element arranged in series, a chamfer is formed at the joint of the reverse element and the forward element, the chamfer of the reverse element is at the outlet side of material flow, the chamfer of the forward element is at the inlet side of material flow, and the chamfer connects the reverse element and the forward element to form a melt flow channel. The chamfered screw element of the twin-screw extruder proposed by the present invention improves the dead zone retention problem, thereby avoiding black spots in products and improving product quality.
Country Code: CN
Application Number: CN202323494220.8
