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7 Solutions to Common Plastic Recycling Operation Problems
1. Material feeding instability
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2. Contamination of the plastic material
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3. Blockages and hopper bridging
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Proper preparation based on the type, shape, and condition of the waste material for your recycling machine, and using auto-feeding systems can solve many material blockage problems. Periodic maintenance on the machine components, regularly changing filter meshes, and unclogging the die head are also easy and common preventions. Using force feeders for hopper-feeding recycling machines can help prevent material bridging.4. Overheating
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5. Sticky plastic pellets
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6. Hollow plastic pellets
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Vacuum degassing system options based on the condition of the material is an effective solution to remove gas from the materials which causes hollow pellets. Adjusting the right and stable temperature on particular zones of the recycling extruder and die head provides smooth plasticization. Adjusting the right cooling water temperature and speed (not too cold and not too fast) prevents recycled pellets form a hollow shape.7. Non-uniform pellets or chunks
Solution:
Stabilizing material feeding, ensuring smooth melt flow with the right temperature adjustment and preventing clogging, and using an auto speed and pressure-controlled pellet cutting system will solve most of the non-uniform pellet output problems.
Such as the POLYSTAR water ring pelletizer automatically adjusts pellet cutting speed based on the speed of the melt coming out from the die head. The system also ensures the pelletizing knives are always positioned on the die head synchronously with the die head pressure.
This results in cutting uniform size and shaped pellets all the time. Dull pelletizing knives or their disposition might cause plastic chunk creation, replacing the knives with original spare parts and maintaining the right position can solve this problem.
How to choose a stable plastic recycling machine?
While investing in a plastic recycling machine, recyclers, and plastic producers are suggested to consider the machine's performance, user-friendliness, and ease of maintenance all together. A stable plastic recycling machine must work in harmony with its all sections and equipment. Moreover, responsive after-sales service with quick spare parts support provides a big advantage and helps you stay competitive in the market in the long run.
Thanks to continuous re-engineering and using world-class components, POLYSTAR is proud to provide stable machine operation performance along with high-quality outputs. This is one of the important keys to our customers’ fast ROI.