Granulating Machine: Transforming Plastic Waste into High-Quality Regrind for Reuse

What is a Granulating Machine?

granulating machine (or plastic granulator) shreds plastic waste into small, uniform granules (regrind) for reuse in injection molding, extrusion, or blow molding.

Types of Granulators

  1. Central Granulators
    • Large-scale machines for high-volume recycling.
  2. Beside-the-Press Granulators
    • Compact units for immediate scrap recycling in production lines.
  3. Slow-Speed Granulators
    • Quiet operation for thick plastics (e.g., pipes, profiles).
  4. High-Speed Granulators
    • Rapid processing for thin films and bottles.

Key Advantages

✔ Material Savings – Up to 100% reuse of production scrap.
✔ Space Efficiency – Compact models fit beside molding machines.
✔ Low Noise – Some models operate at <75 dB.

Applications

  • Injection Molding Scrap Recycling
  • Blow Molding Regrind Production
  • 3D Printing Filament Recycling

Operation Steps

  1. Feeding – Load plastic scrap into the hopper.
  2. Cutting – Rotating blades shred material into granules.
  3. Screening – Filters granules by size (3–10 mm).
  4. Collection – Stores regrind for reuse.

Maintenance Tips

  • Sharpen blades monthly for optimal cutting.
  • Clean screens to prevent clogging.