Strand Pelletizing for Recycling Lines with Frequent Filter Changes
The underwater strands pelletizing line is designed for recycling applications where strand stability and continuous feeding are important. It is especially suitable for PET flakes and similar recycling processes where filter changes may happen frequently during production.
In conventional strand pelletizing, broken strands can cause downtime and material waste. The underwater strands system helps reduce this problem by using water flow to guide the strands into the pelletizer. Even when strands break during filter changing, the water flow can help feed them back into the cutting section.
This makes the system practical for recycling lines that require more stable operation, reduced waste, and easier strand handling.
How the System Works
After the recycled polymer melt exits the extruder through the strand die, the strands enter the water bath. The water cools and supports the strands while also helping guide them toward the pelletizer.
The strands are then fed into the strand pelletizer, where rotating knives cut them into pellets. After cutting, the pellets pass through the dewatering system to remove surface water. Finally, the pellets are screened by a vibrating classifier before collection.
The key feature of this system is that water flow assists strand feeding, which is helpful when strand breakage occurs during filter changes or unstable recycling conditions.
Main Components
The underwater strands pelletizing line typically includes:
- Strand die
- Water bath
- Water-flow strand guiding system
- Strand pelletizer
- Centrifugal dewaterer
- Vibrating classifier
- Product collection system
Suitable Materials and Applications
This system is commonly used for:
- PET flakes recycling
- Plastic recycling lines requiring frequent filter changes
- Recycled polymer pelletizing
- Recycling processes where strand breakage may occur
- Materials where automatic strand feeding by water flow improves production stability
Key Advantages
- Water flow helps guide strands into the pelletizer
- Reduces waste during filter changes
- Improves production continuity in recycling lines
- Suitable for PET flakes and similar recycling applications
- Helps reduce downtime caused by broken strands
- Stable cooling, cutting, dewatering, and classification process
- Practical solution for recycling operations with unstable strand conditions
Reliable Pelletizing for Recycling Production
In recycling operations where filtration changes and strand breakage can interrupt production, the underwater strands system helps keep the process moving with better strand feeding and reduced material loss. The line design can be adapted to the recycling material, melt filtration arrangement, water-flow guiding method, output level, and pellet collection process.
