Three-Component PU Casting Machine | Industrial Elastomers
Engineered for MDI, TDI, and NDI prepolymer formulations, the HF-CPU300-3K delivers accurate continuous metering and high-shear dynamic mixing at temperatures up to 140°C for rollers, screens, and wear parts.
Precision Metering and Thermal Homogeneity for Polyurethane Elastomers
The HF-CPU300-3K is a high-temperature three-component CPU casting machine designed for precision metering, dynamic mixing, and bubble-free dispensing of prepolymers and chain extenders in heavy-duty industrial elastomer manufacturing.
The HF-CPU300-3K is an industrial-grade three-component casting system engineered specifically for high-performance cast polyurethane elastomer (CPU) production. It integrates dedicated vacuum thin-film degassing, thermal oil jacketed temperature regulation, and high-precision dosing pumps to handle demanding prepolymer formulations such as TDI/MOCA and MDI/BDO systems.
Equipped with an advanced high-shear dynamic mixing head, the unit prevents thermal degradation and air entrapment during injection. Independent closed-loop flow control ensures dynamic stoichiometry tracking across varying discharge rates, supporting both open mold gravity casting and low-pressure closed mold filling without mechanical surging or shot weight variations.
Material Flow and Working Principle
Thermal Preparation & Thin-Film Degassing
Prepolymer and polyol components are heated via independent thermal oil jackets to operating temperatures between 80°C and 130°C, while multi-stage vacuum thin-film degassing extracts micro-void moisture and residual gases under pressures below 0.08 kPa.
Synchronized Closed-Loop Metering
Servo-driven high-precision rotary gear pumps meter components into heated delivery lines, with Coriolis mass flow meters providing continuous feedback to maintain ratio tolerances within ±0.3%.
High-Shear Dynamic Homogenization
The component streams enter the high-speed dynamic mixing chamber, where a variable-speed rotor operating between 2,000 and 6,000 RPM shears the formulation into a homogeneous mixture without introducing frictional overheating.
Controlled Dispensing & Self-Cleaning
The mixture is dispensed directly into preheated molds through a non-drip anti-splash nozzle; upon sequence completion, an automated pneumatic snuffer valve seals the outlet and executes programmed solvent/air purge cycles.
Model and Technical Parameters
Configuration values from the supplied equipment brief. Final settings and capability are confirmed for the selected material and project conditions.
| Technical Parameter | HF-CPU300-3K |
|---|---|
| Components | 3 Components (A: Prepolymer, B: Polyol/Additive, C: Extender) |
| Output Range (g/s) | 5.0 to 35.0 kg/min (Continuous adjustable) |
| Mixing Ratio Range | 100:5 to 100:60 (By weight) |
| Ratio Accuracy | ±0.3% (Measured with steady laminar flow) |
| Power Supply | 380V, 3-Phase, 50Hz (Custom 480V 60Hz available) |
| Working Pressure | 0.3 to 0.8 MPa (Metering line & mixing chamber) |
| Tank Capacity (L) | Tank A: 250 L, Tank B: 150 L, Tank C: 80 L |
| Weight | 2,800 kg (Empty configuration) |
| Dimensions (L×W×H) | 3200 mm x 2100 mm x 2450 mm |
Key Equipment Features
The Haifeng package includes material degassing tanks, metering equipment, dynamic mixing, heated transfer lines and the electrical control system. Mold centrifuges and step-curing ovens are optional. Chemical materials are provided by the selected material supplier; site power and compressed air are customer interfaces.
Thermal Oil Multi-Zone Regulation
Individual thermal circuits for tanks, pumps, hoses, and mixing heads deliver precision within ±0.5°C up to 140°C.
Closed-Loop Ratio-Lock Control
Real-time Coriolis mass flow meters continuously adjust servo drives, maintaining dynamic mix accuracy within ±0.3%.
Vacuum Thin-Film Degassing Unit
Operating below 0.08 kPa, the automated falling-film degasser removes entrapped micro-bubbles to eliminate internal void defects.
Variable High-Shear Mixing Head
Specially profiled rotor geometry provides homogeneous blend quality across viscosities ranging from 100 to 50,000 mPa·s.
