Parallel and the conical twin-screw extruder have the s […]
Parallel and the conical twin-screw extruder have the same thing: it has a conveying mechanism that forces the plastic forward, good mixing and plasticizing ability and dewatering ability, and basically the same adaptability to the material and plastic product molding process.
The difference between parallel and conical twin screw extruder
1. Diameter: The diameter of the parallel twin screw is the same, and the diameter of the small end of the conical twin screw is different from the diameter of the large end.
2. Concentric distance: The center distance of the flat twin screw is the same, the two axes of the conical twin screw are at an angle, and the size of the center distance changes along the axis.
3. Length-to-diameter ratio: Parallel double screw (L/D) refers to the ratio of the effective part length of the screw to the outer circle of the screw, and conical twin screw (L/D) refers to the effective part length and the diameter of the large end of the screw. The ratio of the average of the end diameters.
From the above, we can clearly see that the most significant difference between parallel and conical twin-screw extruders is that the geometry of the screw and barrel is different, which leads to many differences in structure and performance. Although the characteristics of the two are different, But they have their own advantages.