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Gneuss hosts PET bottles recycling forum in Germany

24 Mar '15

5 min read

Jan Meyer of Unisensor SensorSysteme GmbH explained the ultra-high-speed laser spectroscopy used in the Unisensor Powersort system that allows a large number of impurities to be separated both efficiently and selectively.

The entire process for making pure PET flakes was addressed by Werner Herbold of Herbold Meckesheim GmbH.

He focussed mainly on improved economy and greater energy efficiency, as documented in special work processes such as wet grinding of the starting material.

In the presentation of Andreas Christel, Product Manager responsible for PET recycling at Bühler Thermal Processes AG, the emphasis was on bottle-to-bottle (B2B) recycling.

Covering all stages from the collected PET bottles to the ready-to-use bottle granulate, Bühler offers its customers the entire PET recycling process with which systems achieve throughput rates of 100 t/d.

Processing the cleaned PET flakes to make film, fibres, filaments or packaging tapes is always done using a melting process and multi-shaft extruders with vacuum degassing have been found to be advantageous.

The innovative multi-rotation system (MRS) from Gneuss Kunststofftechnik GmbH was shared Dirk Nissen, which now functions as a core component for a whole series of applications such as cast film, fibres, multi-filaments or granulate.

On behalf of Coperion GmbH, Sabine Schönfeld presented some important features of the double-screw extruder ZSK Mc 18, the high energy density of which forms the basis for increased throughput capacities combined with gentle material handling.

Friedel Dickmeiß presented the process for converting PET bottle waste into textile filaments that has been developed by BB Engineering GmbH, with mainly rPOY being produced.

Particularly in view of the still low collection rates in the USA and Western Europe, BBE sees good market potential for recyclate-based spinning units as collection results improve.

Automatik Plastics Machinery GmbH showcased the advantages of filter and granulating units in PET recycling, and Christian Schiavolin, presented a new SSP process on behalf of SB Plastics Machinery.

In this process known as ‘Moby’, PET granulate is heated in a vacuum by mechanical movement from IR radiation sources, and is polycondensated in the solid phase. (AR)

Fibre2fashion News Desk - India