PETpla.net Insider 06 / 2020

MATERIALS / RECYCLING PETplanet Insider Vol. 21 No. 06/20 www.petpla.net 25 with the same opacity and white- ness. Depending on the target appli- cation, it could even be formulated with no minerals. The synergy between micro- structured wall and light scattering is still at the core of pennaholt master- batch. Its mechanism is created by a composition of inert particles and a highly engineered organic poly- mer, with high molecular weight and high thermal stability, that is FDA approved and REACH compliant. On the recycling side, Penn Color says that pennaholt meets the APR and EPBP guidelines on elutriation, extrusion, solid stat- ing and material IV, with 50% rPET blend. When taken through multiple cycles of bottle-to-bottle closed- loop recycling, PET bottles with the latest version exhibit no difference to clear PET bottles in terms of IV loss, either. Supporting the ‘circular economy’ The industry only puts on the market packages that are fully compliant with Health and Safety regulations. That requires the strict control of Non Intentionally Added Substances (NIAS) in the package. However, higher content of recy- cled material in packages and more recycling closed loops could risk NIAS build-up in the circular econ- omy streams. Penn Color says that pennaholt is specifically formulated to reduce NIAS, with substances of higher level of purity and thermo- stability than found in conventional masterbatches. In a specific sce- nario of three closed loops of manu- facturing, recycling and re-using with 100% rPET, analytical tests found 50% fewer NIAS with pennaholt than with a conventional TiO 2 based mas- terbatch. Penn Color asserts that, as a platform technology, pennaholt allows the creation of bespoke for- mulations, for both monolayer and multilayer packages, to not just sup- port but actually get ahead of global circularity and regulatory trends. www.penncolor.com MATERIALS / RECYCLING 25 E N D L E S S I N N O V A T I O N S I N C E 1 9 1 9