Twin screw granulator and single screw granulator are two different machines, but in terms of performance, twin screw granulator has more advantages. So you know what are the advantages of twin screw granulator and single screw granulator, how to determine their diameter?

How to determine the diameter of twin screw granulator?
1, the specifications of the twin screw plastic granulator are represented by the screw diameter D, in order to meet the requirements of “three” (serialization, standardization and universalization), the screw diameter of the granulator in China has been serialized.
2, the world production of molding granulator screw diameter is mostly below 300mm, and used for granulating or mixing granulator screw diameter is about 150-600mm between, the larger has reached 750mm.
3, in most cases, the screw diameter is determined according to the requirements of the unit output, and the output is determined by the specifications of the unit production products.
4, such as tube extrusion unit, extrusion film or extrusion machine group productivity Q can be calculated by the corresponding formula, other units can deduce the corresponding formula.
5, according to the provisions of China’s granulator standards, the diameter of the granulator is 30, 45, 65, 90, 120, 150, 200, 250 and 300mm.

What are the advantages of twin screw granulator and single screw granulator?
1. The conveying efficiency of single screw depends on the friction performance of solid materials and the viscosity of the melt. In the twin screw plastic granulator, the material is transported by the principle of positive displacement, no pressure backflow.
2, because the screw length of the twin screw plastic granulator is short, so the material stays in the twin screw plastic granulator for a short time, which can avoid the occurrence of thermal degradation of the recycled material fiber, but also reduce the power consumption.
3, plastic material by longitudinal and transverse shear, mixing, with excellent homogenizing plasticizing effect.
4, twin screw plastic granulator has excellent exhaust and self-cleaning function.
5, the flow rate of the twin screw plastic granulator is not sensitive to the pressure of the die, and it is more effective to extrude products of large size and area. The flow rate of single screw granulator is sensitive to die pressure.