Today we’re taking a closer look at a complete PP woven bag shredding and pelletizing line with a capacity of 500 kilograms per hour. This advanced system transforms waste woven bags into high-quality plastic pellets—helping factories reduce raw material costs while cutting down on waste.
End-to-End Recycling Process
From feeding and shredding to extrusion and pellet cutting, each stage of this line is carefully engineered for smooth operation, consistent throughput, and excellent pellet quality.
Step 1: Feeding & Shredding
The process begins with a belt conveyor, which delivers PP woven bags into the line. The material is then processed in a powerful shredder, reducing the woven bags into small, manageable fragments for further processing.
Step 2: Compaction
Next, the shredded fragments are transported to a compactor. This critical step removes moisture, reduces material volume, and ensures a consistent feed into the extruder. By stabilizing the input, the compactor improves both energy efficiency and melt quality.
Step 3: Two-Stage Extrusion
The heart of the line is ASG’s two-stage single screw extruder.
- First stage: melts and plasticizes the PP material.
- Second stage: provides advanced filtration and vacuum degassing, ensuring stability even when processing printed or contaminated woven bags.
This two-step process guarantees a clean, uniform melt.
Step 4: Pelletizing
Once melted, the material passes through a die and is cut into uniform pellets. Depending on the setup, pelletizing can be done by a water-ring die-face cutter or a strand cutting system. Pellets are then cooled, dried, and collected with low moisture content and excellent dimensional stability.
Why Choose This System?
With its reliable feeding, strong shredding, efficient compaction, advanced extrusion, and precise pellet cutting, this woven bag recycling line delivers:
- High-quality pellets
- Reduced raw material costs
- Lower environmental impact
INQUIRIES
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Frequently Asked Questions
What materials can this recycling line process?
The line is designed for PP woven bags, including printed and contaminated bags. The shredder reduces the bags to fragments, and the two-stage extruder with advanced filtration and vacuum degassing handles inks and impurities, so even lower-grade woven bag waste can be converted into usable pellets.
What is the capacity of this woven bag recycling line?
This configuration is rated at 500 kilograms per hour of PP woven bags. Actual throughput depends on bag condition, contamination level, and pellet specifications. If you need higher output, contact us about larger configurations built around the same shredding, compaction, and two-stage extrusion process.
Why does the line use a two-stage extruder?
The first stage melts and plasticizes the PP material, while the second stage provides advanced filtration and vacuum degassing. This two-step process guarantees a clean, uniform melt with stable extrusion — even when processing printed or contaminated woven bags — which directly improves pellet quality and consistency.
What pelletizing systems are available?
Depending on the setup, pelletizing can be done with a water-ring die-face cutter or a strand cutting system. Both produce uniform pellets; the choice typically depends on your target pellet shape, throughput, and downstream handling. Pellets are cooled, dried, and collected with low moisture content and excellent dimensional stability.
What role does the compactor play in the line?
The compactor sits between the shredder and the extruder. It removes moisture, reduces the volume of the shredded fragments, and creates a consistent, dense feed into the extruder. This stabilized input improves energy efficiency and melt quality — a critical step for fluffy, low-bulk-density materials like woven bags.
What are the power and installation requirements?
Requirements depend on the exact configuration, including shredder size, extruder stages, and pelletizing choice. The line runs as a continuous process from feeding through pellet collection, so plan for adequate electrical supply, cooling water, and floor space. Share your target capacity and our engineers will provide exact specifications with your quotation.