Two Stage Compounding Extruder


Structure: the first stage is SHJ type high speed co-rotating twin screw extruder, the second stage is SE series low speed single screw extruder, both of which are arranged vertically and orthogonally, forming a two stage compounding unit;
Principle features and application:
1. Combine the advantages of co-rotating twin screw and single screw to complement each other. Twin screw forced conveying, high-efficiency plasticizing and mixing, shear dispersion, no head back pressure reflux, avoid high shear overheating. Single screw high-pressure extrusion, but low speed and low shear, also avoid the overheating contradiction.
2. The combination of twin screw and single screw can decompose the process function and increase the independent operation variables, which is conducive to the step-by-step optimization of each process.
3. It is widely used in all kinds of heat sensitive materials and large capacity devolatilization operations, such as PVC, XLPE, halogen-free flame-retardant cable materials, shielding materials, high concentration carbon black masterbatch and rubber dehydration post-treatment operations, etc.