I. High-Efficiency PET Sheet Roll Crushing Solution
In the PET recycling sector, continuous rolls of waste PET sheet are frequently generated during sheet extrusion and thermoforming processes. Compared to loose PET sheet scrap, PET sheet rolls are more challenging to process; their continuous, relatively rigid nature often leads to unstable feeding.
Feeding large PET sheet rolls directly into conventional plastic crushers often causes issues such as erratic feeding, material accumulation, rotor wrapping, and fluctuating equipment loads.
To address this challenge, ACERETECH has developed a crushing solution specifically for PET sheet rolls, based on its GF series heavy-duty plastic crushers.
The application showcased in this video features a GF500/1200 crusher equipped with an unwinding and nip-roll feeding system, a belt conveyor, and a heavy-duty crushing rotor. The entire system is designed for the continuous processing of PET sheet rolls, producing uniformly sized PET flakes for subsequent recycling stages.
Reference throughput: 300–1000 kg/h
II. PET Sheet Roll Crushing Process
The PET sheet roll recycling process in this application is as follows:
PET Sheet Roll → Unwinding → Nip Roll → GF500/1200 Crusher → Conveying → Collection
Each stage performs a specific function:
The unwinding system continuously dispenses the PET sheet roll, while the nip roll controls and guides the sheet before it enters the crusher, feeding the material into the GF500/1200 crusher at a controlled rate.
After crushing, the PET sheet is reduced to smaller flakes or fragments and conveyed to a downstream collection system.
This configuration allows the crusher to operate as part of an integrated, continuous PET sheet recycling system rather than as a standalone unit.
1. Continuous PET Sheet Roll Unwinding System
One of the primary challenges in PET sheet roll recycling is the continuous release of material from the roll. The unwinding system provides mechanical support for PET sheet rolls, ensuring a smooth and gradual release of the material during operation.
This helps prevent uncontrolled feeding and ensures a more uniform, stable flow of material into the granulator. For applications involving large or heavy PET sheet rolls, a dedicated unwinding system is particularly effective at enhancing feed stability and minimizing the need for manual intervention.
2. Hold-down roller for stable feeding
The hold-down roller grips and guides the PET sheet before it enters the crushing system.
Its primary functions include:
Controlling PET sheet feed
Guiding the continuous sheet
Maintaining a stable material flow
Reducing uncontrolled sheet movement
Helping to synchronize feed speed with the crusher's operating speed
For continuous PET sheet rolls, stable feeding is just as critical as crushing capacity.
An appropriate hold-down roller configuration helps ensure the PET sheet enters the crusher in a controlled manner.
3. GF500/1200 heavy-duty PET sheet crusher
The core equipment for this application is the GF500/1200 plastic crusher.
Equipment specifications:
| Model |
GF500/1200 |
| Rotor diameter | 500 mm |
| Rotor length | 1200 mm |
| Reference throughput |
300–1000 kg/h |
The large rotor and crushing chamber provide ample processing space for continuous PET sheets.
For rigid PET sheets, the heavy-duty rotor and cutting system deliver the mechanical force required for continuous shearing and size reduction.
4. V-cut system for PET sheet crushing
The GF series utilizes a V-shaped knife arrangement.
This V-cut configuration allows the knives to engage the material progressively, rather than forcing the entire sheet into the cutting zone at once. This cutting principle is ideal for continuous, high-toughness plastic sheets.
Key advantages include:
Progressive cutting action
Improved material gripping
Smoother crushing operation
More uniform output
Reduced impact forces compared to sudden full-width cutting
Actual output size depends on the selected screen configuration and material characteristics.
5. PET sheet crushing capacity: 300–1000 kg/h
Based on the application shown in the video, the reference processing capacity for the GF500/1200 PET sheet crushing solution is:
300–1000 kg/h
However, actual capacity will vary depending on specific material and operating conditions.
Key influencing factors include:
PET sheet thickness
PET sheet width
Roll diameter
Material density
Feeding speed
Screen aperture size
Cutter configuration
Downstream conveying conditions
Therefore, this capacity should be viewed as a reference range rather than a fixed output figure.
For accurate equipment recommendations, ACERETECH can conduct an assessment based on the customer's actual PET sheet specifications and required output.
6. Produces high-quality, consistent PET flakes for downstream recycling
After processing by the GF500/1200 crusher, continuous rolls of PET sheet are transformed into smaller PET flakes or chunks.
These recovered PET flakes can then be conveyed to subsequent processing stages based on the customer's recycling requirements.
Potential downstream processes include:
PET washing
PET drying
PET pelletizing
Recycled PET production
For manufacturing plants generating PET sheet scrap, this offers a practical solution for converting production waste into reusable recycled material.
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III. ACERETECH solutions integrate the feeding and crushing stages into a continuous operation system.
Key Advantages
* Stable unwinding
The unwinding system supports continuous feeding of PET sheet rolls.
* Controlled feeding
A pressure roller guides and controls the sheet prior to crushing.
* Powerful crushing
The GF500/1200 provides a robust and efficient crushing platform for PET sheets.
* Flexible Capacity
The system can be configured according to material specifications and production requirements.
* Easy Integration
The crusher can be connected to downstream conveying, washing, or pelletizing equipment.
IV. In-Plant Production Waste – PET Sheet Roll Recycling
PET sheet rolls are not necessarily classified as post-consumer waste.
Many PET sheet manufacturers and thermoforming plants generate production waste during the following stages:
PET sheet extrusion
Thermoforming
Sheet cutting
Production changeovers
Quality control
Edge trimming
Instead of discarding this valuable PET material or sending it to external waste processors, manufacturers can install an in-plant PET sheet recycling system.
The GF500/1200 crusher serves as a size-reduction unit, transforming production waste into PET flakes suitable for further processing or reuse.
This not only helps manufacturers reduce plastic waste but also enhances the recovery value of PET production scrap.
V. Applications of the GF Series Plastic Crusher
While this application focuses on crushing PET sheet rolls, the GF series can also be configured for a wide range of plastic recycling scenarios.
Typical materials processed include:
PET sheets
Plastic films
Lightweight plastic products
Small hollow plastic containers
Other recyclable plastic waste
The final equipment configuration is determined based on material characteristics, required throughput, and downstream processing needs.
VI. ACERETECH PET Sheet Roll Recycling Solution
The application case for the GF500/1200 model demonstrates how specialized feeding and crushing configurations are used to process continuous PET sheet rolls.
By integrating an unwinding system, a nip roller, and the GF series heavy-duty plastic crusher, ACERETECH provides a complete front-end solution for the size reduction of PET sheet waste.
Whether you are a PET sheet manufacturer looking to recycle production scrap or a recycling company processing PET sheet waste, ACERETECH can tailor a PET sheet roll recycling solution to your specific material specifications and production requirements.
FAQ
Q1. Why is an unwinding system required for PET sheet rolls?
A: Continuous PET sheet rolls consist of long, interconnected strips of material, making stable feeding difficult to achieve. The unwinding system facilitates the gradual unwinding of the roll material, ensuring a more stable feed flow to the crusher.
Q2. What is the function of the nip roller?
A: The nip roller grips and guides the PET sheet material prior to crushing. It helps control material movement and maintains a more stable feeding process.
Q3. What size PET flakes can the GF500/1200 produce?
A: The size of the output flakes depends primarily on the screen configuration and material properties. Different screen aperture sizes can be selected based on the requirements of the downstream recycling process.
Q4. Can the shredded PET flakes be used for pelletizing?
A: Yes. With appropriate pre-treatment, the shredded PET flakes can be further processed using PET recycling and pelletizing equipment. The specific process design depends on the material condition and the desired quality of the recycled PET.
Q5. Can the GF series equipment process materials other than PET sheets?
A: Yes. Depending on the configuration, the GF series crusher can also process plastic films, lightweight plastic products, small hollow containers, and other plastic waste.