What Is a Plastic Granulator?

What Is a Plastic Granulator? Frequently Asked Questions

A Plastic Granulator is widely used for size reduction in plastic recycling and recovery processes. It uses rotating knives and fixed knives to cut plastic waste into smaller and relatively uniform particles, preparing the material for further washing, sorting, extrusion and recycling.

1. What materials can a plastic granulator process?

A plastic granulator can process various thermoplastics, including plastic film, woven bags, plastic bottles, injection-molded parts, pipes, sheets and production scrap.

Since different plastics vary in hardness, thickness and toughness, the rotor design, knife configuration, motor power and screen should be selected according to the specific material.

2. What is the difference between a plastic granulator and a shredder?

Both machines can be used for plastic size reduction, but they normally work in different ways.

A shredder generally operates at low speed and high torque and is suitable for large, thick or tough plastic materials.

A granulator normally uses higher-speed rotating knives to cut plastic into smaller and more uniform particles.

In some recycling systems, a shredder and granulator can be used together as a two-stage size-reduction process.

3. What materials are used for plastic granulator knives?

Common knife materials include T10, D2, SKD11, H13 and H12,etc.

For example, T10 can provide a cost-effective solution, while D2 and SKD11 offer good wear resistance. H13 and H12 can be considered for specific operating conditions.

The hardest knife material is not necessarily the best choice. Knife selection should also consider wear resistance, toughness, material characteristics and working conditions.

4. What is the difference between fixed and rotary knives?

Rotary knives are mounted on the rotor and continuously bring the material into the cutting area. Fixed knives are installed inside the cutting chamber and work together with the rotary knives to create a shearing action.

The knife clearance, number of knives, rotor design and screen opening all affect the processing capacity and final particle size.

5. How should I choose a plastic granulator?

Four key parameters should be considered first:

Material type, feed size, required capacity and target output size.

For large plastic items, pre-shredding may be recommended before granulation. If a more uniform particle size is required, special attention should be paid to the matching of the knives, rotor and screen.

Therefore, a plastic granulator should not be selected based only on motor power or machine model. The actual material characteristics and complete recycling process should be considered.

Why Choose UTMACH Plastic Granulators?

UTMACH provides not only standard plastic granulators but also customized solutions based on material characteristics, required capacity, feed size and target output size.

Welcome to contact us for more detailed technical information and customized proposal suggestions.

Email: info@utmach.com