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TDH-75D
Read Count：32 Update Time：2026-10-04 12:36:23
Turnkey 2,000–3,500 kg/h compounding line for PP/PE carrier with 80%+ calcium carbonate loading — from automatic bag unpacking to palletized, stretch-wrapped finished pallets.
The TDH-75D series is a complete turnkey line engineered for high-filler masterbatch compounding, where abrasive mineral fillers at very high loadings place extreme demands on screw wear resistance, torque reserve and feeding accuracy. One reference configuration covers the full process chain: automatic bag unpacking, gravimetric dosing and loss-in-weight feeding, high-torque twin-screw extrusion, water-ring pelletizing, and automated packaging, palletizing and stretch wrapping.
Main Extruder — TDH-75D/900-315-52
| Application | PP / PE carrier + 80% or higher CaCO3 filler masterbatch |
| Screw diameter | 71 mm |
| L/D ratio | 52:1 (12 barrel sections, 3,770 mm overall) |
| Main motor | 315 kW AC, 60–900 rpm |
| Gearbox | High-torque tandem type; design life ≥ 50,000 h; torque rating 11.6–12.6 T/A³ |
| Throughput | 2,000–3,500 kg/h (depending on formulation and process) |
| Barrel heating | ~70.8 kW, 13 temperature zones, cast copper / aluminum heaters |
| Barrel cooling | Soft-water circulation with external heat exchanger |
| Exhaust | Natural vent (section 6) + forced vacuum (section 11), 5.5 kW |
| Screw elements | Modular, involute-spline mounted; 38CrMoAlA nitrided or W6Mo5Cr4V2 high-speed steel, 60–62 HRC |
| Control | Touchscreen + PLC (Siemens platform), self-tuning AI temperature control, full interlock protection |
Complete Line Configuration
1. Automatic bag unpacking system
180 kg robot with 3D vision stack detection; 304 stainless bag-breaking silos; enclosed waste-bag collection; Siemens PLC control.
2. Loss-in-weight metering & feeding
Five servo-driven loss-in-weight feeders covering carrier granules, powder additives and 1,250-mesh calcium carbonate (200–1,000 kg/h per feeder); OIML R60 C3 sensors; quick-release 304 stainless contact parts; 5 m³ and 10 m³ transfer silos on a two-layer steel platform.
3. 8-component gravimetric dosing machine
±5–10 g accuracy; 100 s / 20 kg batch; stainless hoppers; multiple formula storage with one-touch switching.
4. TDH-75D twin-screw extruder unit
As specified above, with enlarged main feed port (L/D=6 section), hydraulic screen changer sized for high-filler service, melt pressure and temperature interlocks.
5. CW60 forced side feeders ×3
Positive side feeding for glass fiber, talc, graphite and flame retardants; alloy-lined barrels; dust-tight sealing; interlocked with the main unit.
6. Water-ring pelletizing system
SH-2000 die-face hot cutter with automatic knife pressure; enlarged hydraulic screen changer; centrifugal dewatering (15 kW); air-cooled vibrating screen; 2 m³ finished-product silo.
7. Automated packaging + palletizing
Bag magazine (40–80 bags) with servo filling; sewing and heat-seal multi-mode closing; robotic palletizing (180 kg); automatic stretch wrapping; weight re-inspection with metal detection.
Control & Monitoring
Touchscreen + PLC (Siemens platform) control with self-tuning AI temperature control and full-line interlock protection: feeder stop stops the extruder; melt overpressure stops the pump — protection sized for abrasive, high-torque duty.
Why this configuration
- Forced side feeding lets fillers bypass the premixer — lower energy use, less dust, longer barrel life
- Water-ring hot cutting suits high-CaCO3 melts that are difficult to strand-cut
- Configured to your material and target output
Contact us with your formulation and capacity target for a tailored line configuration.
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