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 Amstar’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
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