The present invention relates to the technical field of extruder parts, in particular to a spreader flow channel structure of a twin-screw extruder. The spreader flow channel structure is connected with an upstream twin-screw barrel and a downstream screen changer, and comprises an upstream conical double flow channel and a downstream conical single flow channel. The conical double flow channel is splayed with a gradually reduced caliber, and is divided into a first flow channel and a second flow channel by a distribution wall, with a spreader in the middle of the distribution wall. The opening angle a of the spreader near the inlet is 30° to 80°, and the contraction angle b of the spreader at the downstream of the flow channel is smaller than the opening angle a. With the spreader flow channel structure of a twin-screw extruder of the present invention, the flow speed of the extruded material is accelerated when passing through the spreader. Meanwhile, since the contraction angle b of the spreader is smaller than the opening angle a, the material flows out more easily, ensuring that the retention layer on the inner surface of the spreader flow channel structure is greatly reduced, and finally improving the thermal degradation problem of heat-sensitive materials.
Country Code: CN
Application Number: CN202323349905.3
