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Certain polymers require pelletizing to be carried out under conditions without water and moisture, so that the extrusion system should have sufficient cooling capacity to cater for in this process; some materials are sorted into shear-sensitive or heat-sensitive categories. Two Stage Screw Extrusion System is deigned for such processes. Primary twin screw extruder provides mixing and dispersion without over-shear, lower speed single screw extruder provides enough cooling and pressure accumulation.
Two Stage ScrewExtrusion System
Typical Application
•PVC compounding for cable / hose / pipe fitting
•HFFR cable compounding
•Wood and plastic compounding
•EVA compounding with foaming agent or cross-link additives
•XLPE for cable or PEX pipes
•High concentration carbon black Masterbatch (MB)
Two Stage Screw Extruder
| Type | Motor Power | Rotate Speed | Output(kg/h) |
| GS50-100 | 37-55/22-45 | 500-600/60-90 | 200-300 |
| GS65-150 | 55-75/45-55 | 500-600/60-90 | 400-500 |
| GS75-180 | 75-132/75-90 | 500-600/60-90 | 600-800 |
| GS95-200 | 250-315/90-132 | 400-500/60-90 | 1000-1500 |
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