Material Drying
3 Aufrufe
PET recycled bottle flakes agglomerate after drying
Problembeschreibung
PET recycled bottle flakes agglomerate and bridge in the drying hopper and cannot feed normally.
Ursachenanalyse
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.
Lösung
Control drying temperature ≤165°C; control material level ≤70%; add a stirring device to prevent bridging; strengthen sorting to remove PVC.
Wichtigste Erkenntnis
Agglomeration of PET bottle flakes during drying is a common problem in recycling processing.
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