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PET flakes dried easily

Gloucestershire-based Petlon Polymers has invested in a new extrusion line for the compounding of PET, which incorporates a Kreyenborg infra-red dryer (IRD).

The dryer, supplied by Regis Machinery, has enabled Petlon to increase its PET output to meet increased demand.

David Bargery, Regis managing director, says: “Infra-red rotating drum technology is the simplest, user-friendly crystalising and drying system available, which enables energy efficient processing of PET flakes.”

According to Regis, compared with conventional dry-air systems, the IRD operates with extraordinary efficiency by direct heat irradiation. Energy consumption during production can be reduced significantly, with savings on each kilogram of polymer that is dried before being extruded.

The IRD crystallises and dries PET to around 300ppm rest moisture (rm) in less than 15 minutes. An additional 45-60 minutes in a small buffer hopper is then sufficient to complete the drying to approximately 50ppm/rm.

Gavin Rees, Petlon managing director, says: “The IRD can cope with bottle flakes, pellets or blends of the two. At any time there is only around 150kg of flake within its flights. So, when changing product, the drum can be rotated to discharge material and within minutes it is cleared out.”

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