TECHNOLOGY | RECYCLING LINES
Collection systems also need to be considered,
which differ significantly in Europe from those in large parts of Africa or Asia, for example. As a result, Erema says that measures need to be geared towards the infrastructure in each country and integrate them. However, harmonisation is needed for material flows with guidelines for recycling design, standards for recycling and the use of recyclates in new products. The European Commission is currently
working on this together with all the major players along the value chain that have joined forces in the Circular Plastics Alliance. Erema adds that a realised circular economy depends on each individual in the value chain. “Starting with collection and sorting, through washing, extrusion, filtration and homogenisation, and up to odour reduction - each stage must be optimised in order to end up with a material that is as versatile as possible,” says Hackl. “It is very important that the experts in each process work together. This is the only way we can achieve a process chain that is optimised for the circular economy. In sensitive applications, such as food packaging, the traceability of material flows is an important tool when using recyclates. You need to know where a material has been used before. Sorting technology, markers or a combination of both could help improve this situation. Additives will also still be needed to ensure specific function- ality in plastic products.” Erema has introduced a number of different technologies for recycling plastics. For the produc- tion of optimised recycling compounds, the company has developed Corema, which combines the benefits of recycling and compounding in a single plant. This enables the property profile of
Below: The Vacunite bottle-to-bottle system from Erema
the recyclate to be optimised precisely to the requirements. Corema systems convert raw recycling materials – post-consumer HDPE or PP, as well as in-house waste – into filtered melt using proven Erema technology. This melt is fed directly to a co-rotating twin-screw compounding extruder. Besides the dosing of a wide variety of additives, fillers and reinforcing agents can be admixed in doses that are higher than those previously possible with Erema recycling systems. The result is customised plastic recyclate for high-quality applications. Reduced odour is also becoming an indispensa- ble quality criterion in post-consumer plastics recycling. Through the combination of the Intarema TVEplus RegrindPro machine with the ReFresher odour reduction technology, Erema says that it has enabled the PCR-HDPE produced with it to be used in proportions of up to 100% for the produc- tion of packaging for direct contact with food and beverages, as confirmed by the US Food and Drug Administration (FDA). The Intarema TVEplus RegrindPro machine plus ReFresher was certified by the FDA in August 2019 as suitable for the production of milk and juice bottles, as well as meat trays, disposable tableware and cutlery, provided the input material comes from milk and
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IMAGE: EREMA
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