Extrusion Asia Edition 1-2022

41 Extrusion Asia Edition 1/2021 ➠ Starlinger recycling technology Furtherstr. 47, 2564 Weissenbach, Austria www.recycling.starlinger.com deeply embedded odours are removed.” Contrary to methods which bind the odours by means of additives and enclose them in the regranulate, the Starlinger process removes the substan- ces causing the odours and delivers permanently odour-reduced pellets which do not release unwanted smells in the following production steps. “With the development of the circular economy, HDPE bottle-to- bottle recycling will gain increasing importance“, emphasised Paul Niedl. „A big share of food packaging such as milk and juice bottles, bottle caps as well as food trays for meat is made of HDPE. If this packaging is returned to the recycling stream and reused as food packaging without downcycling, millions of tons of virgin HDPE can be saved in the future.” “The two LNOs are another important achievement for Starlin- ger in the field of food grade recycling”, said Paul Niedl, Com- mercial Head of Starlinger recycling technology. “Like it is the case with PET, 100 % recycled HDPE can now be used in appli- cations with direct food contact. There is keen market interest for this – all signs are pointing towards a circular economy.” An elementary step: Odour reduction The new Starlinger machine concept consists of a recoSTAR dy- namic recycling line with a C-VAC degassing module and downstream odour reduction technology. The removal of odours plays an important role in the production of food-grade recy- clate made from post-consumer HDPE. “Packaging made of HDPE is used for a lot of foods“, explained Niedl. „If, for exam- ple, substances from food scraps migrate into the plastic, they can cause unpleasant smells in the recycling process. To avoid this, we use our three-step procedure: It starts with material pre- paration, followed by highly efficient degassing in the C-VAC module, and is finalized with the thermal after-treatment of the produced regranulate. This method ensures that even 史太林格 recoSTAR dynamic配备C-VAC脱气模块和下游气味降低技术 Starlinger recoSTAR dynamic with C-VAC degassing module and downstream odour reduction technology www.smart-extrusion.com