ADDITIVES | MATERIALS


Evonik has developed additives to assist across the plastics recycling process


Source: Evonik


absorber additive, Tego Sorb PY 88, which is suitable for masterbatchers and compounders. We also have masterbatch additives, Tego Sorb PY 50 PE and Tego Sorb PY 50 PP, that are suitable for convertors. These additives are especially relevant for polyolefins from the PCR stream.” According to Evonik, it is also working on developing more efficient additives for PCR users – for example, defoaming and wetting agents that are biodegradable. “By doing this, we can reduce water contamination during the wet stage,” says Offenbach. “Tego XP 11022 is an example of our first successful additive that provides performance in combination with biodegradability.” It is also working to support high-end recycling


applications for the automotive market. Offenbach says: “The requirement for a circular economy in the automotive market has increased. For example, through recycling plastic parts and then reusing them for the same application. We are not only talk- ing of bumper-to-bumper, but also parts that are made from engineering resin materials, such as PA/ GF, ABS or PC/ABS with coatings or metallised surfaces. We have close collaboration with recy- clers and OEMs to provide solutions for these issues. We are also looking at future developments in the recycling market to support the circular use of flame retardant compounds from different end-use applications, such as cable and E&E.” Milliken has acquired Zebra-chem, the manu-


facturer of peroxide and blowing agent master- batches that allow the incorporation of up to 100% recycled content into new plastics. “Milliken’s long-term focus on innovation and sustainability encourages us to consider how we contribute to some of today’s leading challenges, like how to effectively incorporate recycled plastics in manu- facturing,” says Halsey Cook, Milliken & Company President and CEO. “I’m excited to welcome the exceptional talent within Zebra-chem as they join


www.plasticsrecyclingworld.com


the passionate team at Milliken to move the needle on sustainable innovation.” Headquartered in Bad Bentheim, Germany,


Zebra-chem has a portfolio of chemical blowing agent and peroxide masterbatches for application in most thermoplastics and engineering plastics. “Zebra-chem’s leading position in Europe allows Milliken to leverage its congruent innovation platforms, global presence and commercial expertise to accelerate market solutions that improve and increase manufacturing with recycled plastics,” says Wim Van de Velde, Vice-President, Europe, Middle East and Africa, for Milliken’s Chemical Division. “Our combined skill-sets will facilitate faster and more customised solutions that achieve our customers’ sustainability goals.” Ampacet has now obtained certification from


COTREP (Comité Technique pour le Recyclage des Emballages Plastiques - Technical Committee for the Recycling of Plastic Packaging) in France for its NIR-sortable black masterbatch REC-NIR-Black PE 302 (1900302-E) for use in PP rigid packaging applications. In 2019, the company received certification from COTREP for REC-NIR-Black 1900302-EA and 4900147-E. Following COTREP protocols, Pellenc ST and


Tomra have performed successful dynamic NIR sorting tests on black PP trays containing 6% REC-NIR-Black PE 302. Tests showed that rigid packaging can be detected by an NIR scan and are oriented towards PP flow with the same sorting performance, including quality and percentage of detection, as other PP household rigid packaging materials. The masterbatch is also suitable for NIR-sorting of PE rigid packaging for return into the PE recycling stream, says the company. Most black packaging contains carbon black as a pigment, which absorbs a significant part of the UV and IR spectrum and so avoids detection by a NIR scan during sorting. Previously, most black


March/April 2021 | PLASTICS RECYCLING WORLD 41


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