ODOUR AND EMISSIONS | TECHNOLOGY
plastics from the German yellow bag waste collection might be reused in products, for exam- ple for indoor applications,” says Fraunhofer. Performance filler producer HPF The Mineral Engineers — a division of Quarzwerke — has been focusing its research efforts on the odour profile of recycled materials with automotive markets in mind. “Smell and odour is a big issue in automo- tive,” says Péter Sebö, Head of Marketing and Market Development at HPF. The company recently published olfactory test
Economy — to address all aspects of the circular economy, ranging from recycling through to logistics and marketing. Mechanical recycling is one of the core topics, with the focus directed on additives and recyclate processing to provide virgin-like properties and applications. As part of the initiative, the Fraunhofer LBF, ICT
and IVV institutes have cooperated to develop a patent-pending process to control odour from post-consumer recyclates using a sandwich injection moulding technique. This encapsulates the recyclate within a thin layer of virgin polymer containing an anti-odour additive. “Even odorous
results comparing the odour of a post consumer recycled (PCR) PP with no filler against versions carrying a five percent addition of three of its specially-prepared coated mineral fillers. The tests were carried out to the VDA270 specification and showed reductions in odour intensity from 4.0 for the unfilled PCR PP to between 2.1 and 2.5 for the filled compounds. According to Sebö, the filler works as a system to counter the residual odour. “The technology is in the combination of the coating and the mineral,“ he says.
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.erema.at �
www.luigibandera.com �
www.starlinger.com �
www.coperion.com �
www.aimplas.net �
www.luxus.co.uk �
www.evonik.com �
www.ampacet.com �
www.fraunhofer.de �
www.quarzwerke.com
Left: Sandwich injection
moulding test specimen showing the recycled core and virgin covering layer
ERF 1000
ETTLINGER continuous melt filters have been processing contaminated polyolefines, poly- styrenes, PET and PA since 2004. Now, with the ERF 1000 you can achieve up to 10 t/hr of e.g. polyolefines with the lowest melt loss in the industry. With rigid-screen, continuous filtration options down to 60 micron, ETTLINGER ERF is the new standard in melt filtration.
IMAGE: FRAUNHOFER ICT
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