Pelletizing Knives & Extrusion Granulator Blades

High-precision pelletizing solutions for plastic compounding, masterbatch production, and biomass granulation. Engineered for consistent pellet geometry and long-lasting sharpness.

Uniform Cutting: Ensures identical pellet size for consistent melting or burning times.
Heat & Wear Resistance: Specialized alloys designed for high-temperature extrusion environments.
Versatile Applications: Ideal for Plastic (PE/PP/PET), Animal Feed, and Biomass (Wood Pellets).
System Compatibility: Fits major underwater, water-ring, and strand pelletizing systems.

Our pelletizing knives are the critical final component in your extrusion line. Whether you are producing plastic masterbatch, high-protein animal feed, or renewable biomass pellets, our blades are precision-ground to ensure every grain is cut to the exact same length.

Plastic Pelletizing: Specifically designed for underwater and water-ring pelletizers. We use corrosion-resistant steels to withstand constant contact with cooling water.
Biomass & Feed Granulation: Heavy-duty blades for wood pellet mills and feed extruders, capable of handling high pressure and abrasive raw materials like sawdust or grain husks.
Surface Treatment: We offer mirror-polishing and specialized coatings (like TiN) to prevent “pellet sticking” and reduce friction, which lowers energy consumption.
Tight Tolerances: Every blade is manufactured to sub-micron tolerances to ensure perfect alignment with the die plate, preventing “tails” or uneven cuts.

How do I prevent "pellet tails" or uneven cutting?

“Tails” are usually caused by a gap between the blade and the die plate or a dull edge. Our blades are precision-ground for maximum flatness, ensuring a clean “shear cut” against the die plate to eliminate smearing or tails.

Which material is better: Stainless Steel or Tungsten Carbide?

Stainless steel is excellent for standard underwater pelletizing due to its corrosion resistance. However, for abrasive materials like glass-filled polymers or biomass, Tungsten Carbide-tipped blades offer a much longer service life and better edge retention.

Can these blades handle high-temperature masterbatch extrusion?

Yes. We use high-speed steels (HSS) and specialized vacuum heat treatments that allow the blades to maintain their hardness and structural integrity at temperatures up to 300°C.

Do you provide custom blade shapes for specific die plate layouts?

Absolutely. We can manufacture pelletizer knives in any shape (rectangular, curved, or multi-edge) based on your technical drawings or a sample of your current blade.