The Air-Cooling Die-Face Pelletizing Line is a high-performance and fully automated pelletizing system engineered for thermoplastic granulation without water-cooling. It is specifically developed for industrial production that requires dry, uniform, dust-free pellets directly from the extruder, making it ideal for recycling, compounding, and high-capacity polymer processing plants.

Technology Overview

This system performs pelletizing directly at the die face. As the molten polymer exits the die, it is cut into granules immediately, then transported through an air-cooling channel instead of a water bath. The pellets cool and solidify by airflow, ensuring zero moisture absorption and eliminating post-drying steps.
This makes it extremely suitable for materials sensitive to humidity or applications that require pellets to remain completely dry.

Material Compatibility

The line is capable of processing a wide range of polymers including:

PP, PE, LDPE, HDPE, ABS, PS, HIPS, PVC, EVA, TPU, TPE, Masterbatch, Fillers, and Recycled Plastic Materials.

The resulting pellets are uniform in geometry and density, ready for direct use in:

– Injection molding
– Film blowing
– Sheet extrusion
– Pipe extrusion
– Compounding and reinforced polymer blending

Performance & Output Quality

Air-cooling die-face pelletizing offers key operational advantages:

Zero water usage and no drying stage required
Dust-free, moisture-free pellets
Stable granule shape with controlled size
Reduced oxidative and thermal degradation during pelletization
 High throughput with low operating cost

The absence of water keeps the polymer structure stable and ensures a cleaner pellet with more consistent mechanical properties.

System Engineering

The system integrates a precision die-face cutter, balanced air-cooling channel, and pneumatic conveying system designed for continuous heavy-duty production.
Maintenance and blade changes are simple due to the accessible cutting chamber design, minimizing downtime.

A PLC-based control platform manages:

Temperature zones
Cutter rotation speed and pellet size
Synchronization with extrusion melt pressure
 Production monitoring and alarm reporting

This ensures consistent quality, reduced labor demand, and long-term operational stability.

Industrial and Economic Advantages

No water tank, dehydration, blower or drying required
Lower energy and utility consumption
Cleaner working environment with minimal contamination risk
Compact design for both small and large production facilities

With lower operational complexity and high pellet quality, this unit is considered one of the most cost-effective solutions for dry-type polymer pelletizing.