Material Drying
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PET recycled bottle flakes agglomerate after drying
Problem Phenomenon
PET recycled bottle flakes agglomerate and bridge in the drying hopper and cannot feed normally.
Cause Analysis
Drying temperature is too high (>170°C); bottle flake surfaces soften and stick together; time is too long; low-melting-point PVC label residues are mixed in.
Solution
Control drying temperature ≤165°C; control material level ≤70%; add a stirring device to prevent bridging; strengthen sorting to remove PVC.
Key Takeaway
Agglomeration of PET bottle flakes during drying is a common problem in recycling processing.
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