RECYCLING | ADDITIVES
packaging of light-sensitive liquids, such as bever- ages or personal care products. Some of these additives have been tested to ensure that they do not interfere with recycling processes, using the EU RecyClass Recyclability Evaluation Protocol for PET bottles or a similar protocol in the US from APR. Last year, three of Avient’s UV barrier additives for
PET bottles were granted Recyclass Recyclability Approval, establishing that the additives do not cause yellowing after recycling, which is important for maintaining high quality in unpigmented PET. The formulations are Cesa Light Additives FEA0050148, Cesa Light Additives FEA0050249, and ColorMatrix Ultimate UV 390-1 Light Barrier for PET. Repi’s UV absorber formulations REMAP 00395 and REMAP 00561 also received a RecyClass Recyclability Approval in late 2024, indicating compatibility for PET recycling in Europe. Most recently, Repi’s UV Absorber Remap 00669, which is designed for the US market, has been recog- nised by APR for use in PET. Cargill IncroMax 100 additive improves polymer flow in injection stretch blow moulding of both virgin and rPET preforms and bottles. IncroMax 100 is a low-dose additive compounded into the plastic that migrates to create non-plasticising flow improvement to help eliminate uneven mould fill in complex design features, such as corners and handles, explained Nathan Noyes, Category Marketing Director, Polymer Additives, at Cargill. He said that the additive allows lower temperatures and pressures during moulding. Due to more uniform stretching, the additive also increased top load strength in up to 100% recycled PET.
Chain extender Polyvel said its ReVal line of additive masterbatch- es is designed specifically to assist with recycling various polymers. The latest from the company is rBoost PET Chain Extender, which increases the IV and impact strength of rPET as well as reduces the yellowness index of rPET. The additive can also maintain the IV of virgin PET after numerous passes, the company reports. Techmer PM’s HiTerra rPET Revive, first intro- duced in 2023, increases the IV of PET, which can allow higher levels of recycled content. New data from Techmer PM demonstrates how 1% of rPET Revive helps maintain IV through multiple heat histories.
Also new from Techmer PM is HiTerra Evacu-
Tech, a contents-release additive technology that can be tailored to maximise the evacuation of specific viscous liquids in a package. It facilitates recyclability and reduces contamination in the
www.compoundingworld.com
HiTerra rPET Revive from Techmer PM helps maintain IV in a multi-pass extrusion study. The image on the right of each graph shows that 1% of the additive helps maintain colour, with a lower yellowness index (YI) than the control Source: Techmer PM
recycle stream due to cleaner packages, the company said.
Swedish company KD Feddersen Plastics Machinery, which distributes engineering plastics and supplies plastics and recycling equipment, announced that Emma Söderhjelm, the company’s Quality Manager, has begun a PhD project study- ing the degradation processes and recyclability of polyamides at the Polymer Technology Institute (PTI), Värnamo, Sweden, funded by the Swedish Wallenberg Initiative Material Science for Sustain- ability (WISE) through the Knut and Alice Wallen- berg Foundation. The project brings an industrial perspective to the research and will investigate the chemistry of chain extenders and their effect on recycled material, said Söderhjelm.
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.baerlocher.com �
www.basf.com �
https://cleanfarms.ca �
https://cdnibc.com �
www.doverchem.com �
https://greenchemicals.eu �
www.brueggemann.com �
https://interfacepolymers.com/ �
https://sk-fp.com �
www.tisan.com.tr �
https://plasticsrecycling.org �
https://recyclass.eu �
https://kraton.com �
https://www.epbp.org �
https://www.avient.com �
https://repi.com �
www.cargill.com �
www.polyvel.com �
www.techmerpm.com �
https://kdfeddersen-plasticsmachinery.com
October 2025 | COMPOUNDING WORLD 49
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