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Comparing Different Types of Plastic Granulators - Pros and Cons

Plastic granulators are available in different rotor designs and cutting mechanisms. Here is a comparison of popular types highlighting the advantages and limitations of each:

Knife Granulators:

Use series of stationary and rotating knife blades

Best for hard, brittle plastics

Produces uniform, fine particles

Handles small to moderate capacities

Knives need frequent sharpening or replacement

Shear-Type Granulators:

Rotating blades intersect serrated stationary blades

Suitable for soft, flexible plastics

Energy-efficient operation

Minimal dust generation

Moderate to high capacities

Shear plates wear over time

Impact Granulators:

High speed hammer-mills with swinging hammers

Ideal for films, sheets and laminates

Large throughput capacity

Most energy-intensive

High noise levels

Higher maintenance with hammer wear

Roller Granulators:

Two heavy serrated rollers crush material

Used for rubber, tires, large chunks

Slow speed with high torque

Minimal dust and noise

Lower capacities than other designs

Make sure to match the granulator type to your specific material, throughput requirements and end-particle characteristics desired.

#Plastic Granulator