Quick answer: In this PP and PE film comparison, the single-shaft shredder uses low-speed, high-torque cutting to reduce bulky film into manageable pieces. The granulator uses faster cutting and a sizing screen for finer output. Choose either stage, or a combination, according to the incoming film, required output and downstream washing or pelletizing process.
What’s the difference between shredding and granulating plastic film? In this video, we demonstrate how a Single Shaft Shredder and a Plastic Granulator process flexible PP and PE film waste, highlighting their different cutting methods and final output sizes.
Machine details: Single-Shaft Plastic Shredder Machines and Standard Plastic Granulator Machines.
Both machines are effective for plastic film recycling, but each offers distinct advantages depending on the required material size and downstream processing needs.
Single Shaft Shredder – Effective Film Size Reduction
The first part of the video demonstrates our Single Shaft Shredder processing loose plastic film.
Using low-speed, high-torque cutting, the shredder efficiently reduces bulky film waste into smaller, manageable pieces. Its powerful rotor and cutting blades provide reliable shredding performance, even when handling lightweight and flexible materials.
As shown in the video, the shredded film already achieves good size reduction, making it suitable for further recycling operations.
Plastic Granulator – Smaller and More Uniform Output
The second part features our Plastic Granulator, designed for finer size reduction.
Unlike the shredder, the granulator uses high-speed rotating blades and a sizing screen to cut plastic film into smaller, more consistent pieces.
The resulting material offers improved size uniformity, making it easier to handle in subsequent washing, drying, and pelletizing processes.
Shredding or Granulating – Which Is Better?
Both machines can effectively process LDPE, LLDPE, and PP plastic films.
A single-shaft shredder is ideal for reducing bulky film waste into manageable pieces, while a plastic granulator is better suited for applications requiring finer and more uniform output.
For recycling lines that require both bulk size reduction and finer cutting, the two machines can also work together.
The best solution depends on your input material, target output size, and recycling requirements.
Contact us to learn more about our plastic film shredding and granulating machines or to discuss a customized PP PE film recycling solution.
Common Questions
Should I choose a shredder or a granulator for plastic film?
Choose according to the job the machine must do. The shredder demonstrated here handles bulky film with a low-speed, high-torque cutting action. The granulator provides finer cutting with a sizing screen. Evaluate representative film against the required output and downstream equipment rather than selecting on motor power alone.
Does every PP or PE film recycling line need both machines?
No. The source film, feeding method and next processing step determine whether one machine is sufficient or two stages are useful. A combined shredder and granulator arrangement can provide bulk reduction followed by finer cutting; confirm that it meets the process requirement through a material trial.
Can output appearance alone confirm particle size and production capacity?
No. The comparison helps illustrate different cutting methods and relative output appearance. Confirm the machine configuration and screen opening, then request a representative trial with throughput and output-size measurements before specifying the line.
Technical Context and References
For general equipment context, ZERMA’s size-reduction overview distinguishes rough sizing by shredders from granulation and describes combined systems. This is background guidance, not independent testing of the Amstar demonstration. See the related plastic film washing line and PP/PE film pelletizing video for downstream process context.
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