INNOVATION | ODOUR REDUCTION
Above: Fraunhofer Institute IVV researches a wide variety of sources of bad odours in plastics
2024, coordinated by Fraunhofer Institute IVV. “We intend to recycle post-consumer LDPE back into food packaging using a cascade of technolo- gies, starting with sensor based and tracer based sorting to distinguish between food and non-food packs in waste packaging,” says Martin Schlummer, Senior Scientist at Fraunhofer IVV. “Downstream, washing, de-inking and delamina- tion technologies of University of Ghent are being used. This way we avoid food residues, dirt, printing inks and adhesives to be compounded into LDPE upon regranulation, which in any case may cause off-odours. “We are also considering the dissolution-based
CreaSolv technology from Fraunhofer IVV. Due to its high purification performance, this produces very pure recycled polymers. As solvents are brought in contact with the polymer and are evaporated from the polymer within the process, other VOCs and semi-volatile organic compounds are removed
together with the solvents. This leads to significant odour reduction.” The project is also investigating Kreyenborg deodorisation technology. The objectives of Circular FoodPack include: development and validation of robust, food contact compliant fluorescent tracers, which can be printed as additive of typical printing inks; adoption of conventional NIR sorters so that these can reliably detect small and commercially viable amounts of sorting tracers on all types of multi-layer food packaging; sorting trials with Tracer-Based-Sorting of marked food packaging items; development, upscaling, and application of deodorization technologies able to remove over 95% of odorous components, benchmarked with common imple- mented deodorization technologies; development of high performance functional barriers, effectively preventing migration of any residual contaminants from the PCRs below the migration limits set out by legislation and EFSA.
CLICK ON THE LINKS FOR MORE INFORMATION: �
https://corporate.evonik.com �
www.byk.com �
www.quarzwerke.com �
www.ampacet.com �
www.aromaticfusion.com �
www.microban.com �
www.coperion.com �
www.kreyenborg.com �
www.erema.com �
www.luigibandera.com �
www.starlinger.com �
www.piovan.com �
www.ivv.fraunhofer.de
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IMAGE: FRAUNHOFER INSTITUTE IVV
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