Twin-screw extruder or twin-screw according to the direction of rotation, can be divided into the extruder, and with the two differences to the extruder, the extruder is consistent with the working direction of rotation of the two screws, different to the extruder refers to the opposite direction of rotation when the two screws working.
Twin-screw or twin-screw extruder according to the line parallel to the axis or not, can be divided parallel to the axis and intersecting the axis of two extruders. Axis parallel to the parallel twin-screw extruder, the axis lines intersect is conical twin screw extruder.
Twin-screw extruder there intermeshing twin screw extruder and non-intermeshing twin screw extruder points.