EDITOUR PETplanet Insider Vol. 23 No. 10/22 www.petpla.net 28 Sorting waste streams A vital element in plastic recycling is the homogenous sorting of different plastics. Sorting by colour is also important, especially in PET bottle recycling, where Sesotec has made a name for itself. The company is now also tackling the PET tray sector. PETplanet spoke to Michael Perl, Group Director Sales Division Sorting Recycling. Sesotec GmbH / June 17, 2022 We met: Michael Perl, Group Director Sales Division Sorting Recycling Brigitte Rothkopf, Director Corporate Communication The better the sorting, the better the subsequently produced rPET. This truism is growing in significance with the increasing streams of rPET. Sesotec uses infrared to sort for example PVC, PLA and multi-material bottles (also with sleeves) and trays from the PET bottle streams, with systems achieving a purity of 99.8 to 99.9%. After the article sorting the bottles are shredded, washed, dried and sorted by airstream before the flakes are cleaned again by means of a flake sorter which are also manufactured by Sesotec. These systems identify foreign material and sort pieces by colour. Sesotec itself builds the systems with a high vertical range of manufacturing; the associated electronics are also developed in house. According to information from Michael Perl, Group Director Sales Division Sorting Recycling, the high vertical range of manufacturing ensures the flexibility and quality of the systems as well as of the assembly. For him, trends in sorting include larger throughput quantities, a reduced loss of accept material and improved sorting performances including sorting algorithms based on AI to handle also higher contaminated plastic fractions. Including glass cullet sorters, systems for mixed plastics, metal and electronic scrap, a total of around 2,200 Schönberg systems are running worldwide in recycling applications. The Sesotec systems are designed for the needs of the individual sorting application – so there are individual sorting systems for plastic bottles and trays, for film, for flakes and regrind, for glass cullets as well as for metal and electronic scrap. Tour Sponsors: Bottles on the pilot plant system PET bottles collected by customers and delivered to the pilot plant to adapt the sorting system perfectly to the bottle streams The same also applies to flakes sent by customers. Michael Perl
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