underwater-pelletizer

CT-TW Series

Recycling pelletizer for high viscosity, higher MFI

PET PP PU PC ABS

Product Overview

The Underwater Pelletizer is purpose-built for processing materials such as PP, PU, PA, and other high melt index (MI) or engineering-grade thermoplastics and elastomers. It excels in applications involving heat-sensitive, high-viscosity, or easily degradable compounds. The process consists of four key stages: melt extrusion, die-face cutting, underwater cooling, and centrifugal drying. This configuration ensures precise pellet sizing, consistent shape, and excellent cooling efficiency—making it ideal for high-volume micro pellet production. Common applications include footwear materials, medical-grade elastomers, engineering plastics, and composite granules.

Key Features

  • Optimized for High-MI and Heat-Sensitive Materials:
    Handles PP, PU, PA, TPU, TPE, and other advanced thermoplastics with high processing requirements.
  • Auto-Compensating Cutter Head:
    Features automatic pressure regulation, blade angle adjustment, and wear compensation to maintain consistent cutting quality.
  • Adjustable-Speed Rotary Cutter:
    Supports blade speed and count adjustments to match different material viscosities and achieve uniform pellet size.
  • Closed-Loop Underwater Cooling System:
    Fully recirculated cooling water system compatible with chillers or heat exchangers; minimizes water usage and environmental impact.
  • Integrated Centrifugal Dryer:
    Removes water efficiently, delivering dry pellets directly without requiring additional drying—ideal for continuous, high-throughput production.
  • Automation-Ready Feeding Interface:
    Supports connection to automated feeding modules for improved efficiency and production continuity.

Applications

  • Micro Pellet Production:
    High-output, fine-pellet manufacturing for technical and specialty applications.
  • High-Viscosity Material Processing:
    Suitable for TPU, TPE, PA, PU, and other demanding elastomeric compounds.
  • Footwear, Medical, and Specialty Elastomers:
    Used in the production of soft-touch, medical-grade, or impact-resistant polymer materials.
  • Engineering Plastics & Composite Granules:
    Supports consistent pelletization where size uniformity and precision are critical.

Technical Specifications

Item Specification
Applicable Materials PP, PU, PA, high MI plastics, heat-sensitive and high-viscosity compounds
Pelletizing Method Underwater die-face cutting with automatic pressure, angle, and wear compensation
Cooling System Closed-loop water cooling system; compatible with chillers or heat exchangers; recirculated water use
Dewatering Method Integrated centrifugal dryer; no secondary drying required
Pellet Size Control High consistency; supports micro pellet production
Cutter Head Rotary cutter with adjustable speed and configurable blade count
Line Integration Compatible with automated feeding modules; excludes quick-change die head, screening, and packaging units

Application :

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