Plastic Pelletizer Machine: Matching Pelletizing Cutting Methods for Different Waste Plastic Materials

1. Strand Pulling Cutting (Traditional Strand Pelletizing)

• Rigid clean plastic scraps: HDPE bottle flakes, PP rigid injection waste, PS foam leftover, ABS plastic chunks, PC rigid waste
• Low-moisture, low-viscosity clean regrind materials
   

  Applicable scenarios: Small and medium recycling plants with simple pretreatment, materials with less surface contamination and low water content. After extrusion, plastic strands are pulled into a water cooling tank for hardening, then cut into cylindrical pellets. This structure has lower plastic granules machine price, simple operation and easy maintenance, the most cost-effective option for entry-level plastic recycling plant.

2. Water-Ring Hot Cutting (Water Ring Pelletizing)

• Soft thin materials: PP/PE agricultural film, shopping bag film, woven bag scraps, slightly sticky low-density LDPE film
• Slightly contaminated, medium-viscosity recycled plastic with certain moisture
   

  Advantages: The die head is immersed in circulating water for instant cutting and cooling, effectively solving material winding and adhesion problems that often happen when soft film is processed by strand cutting. Our matched plastic pelletizing line with water-ring cutting design is widely chosen by factories mainly recycling waste film and woven bags, balancing production efficiency and moderate equipment investment.

3. Underwater Pelletizing Cutting

• High-viscosity, high-fluidity, easy-sticking plastics: EVA, modified plastic, filled masterbatch, tacky hot-melt plastic, heavily printed contaminated soft plastic
• High-output large-scale industrial plastic recycling plant projects
   

  This cutting mode realizes underwater high-speed cutting and rapid cooling inside the closed water tank, producing round, smooth, uniform pellets with no bonding phenomenon. Although the overall plastic granules machine price is higher, it is the preferred configuration for high-end modified plastic and large-volume sticky waste plastic processing, greatly improving product competitiveness for finished pellet sales.