new grade, IP1172, provides improved die buildup perfor- mance, especially in film processes with higher shear rates. IP1173 has food contact approval in Japan, in addition to all of the other key regions across the world. IP1175 was designed to prevent die buildup in higher temperature applications, such as extrusion lamination. Ingenia has also extended the use of its non-PFAS PPAs to blow moulding and pipe extrusion. These applications have historically used resins formulated with fluoropolymer- based PPAs added by resin producers. “As the regulatory landscape continues to change, demand for non-PFAS PPA is growing in this space,” said Dale McCormick, Business Manager at Ingenia Polymers. “As processors require PFAS-free formulated resins that are not yet available, barefoot resins are the interim solution. Adding Ingenia Non-PFAS PPA Masterbatch allows for reduced melt pressure and improved gloss, while preventing die buildup.”
Improving PET flow Cargill said that its IncroMax 100 additive has been found to solve issues of part sticking and scratching and to substantially improve polymer flow in the injection stretch blow moulding of PET preforms and bottles. “Polyesters like PET have relatively high natural surface friction and low shrinkage, which can cause mould release failures in injection moulding as well as marring during production. Additionally, most applications for PET require transparency and high processing temperatures, which limits the additive technologies that can be used to solve the issues inherent to polyester resins,” said Nathan Noyes, Category Marketing Director, Polymer Additives, at Cargill. IncroMax 100 is a low-dose, internal additive that creates non-plasticising flow improvement to help eliminate uneven mould fill in corners, handles, and other complex design features, explained Noyes. “Processing can also be complet- ed at lower temperatures and pressures, for shortened cycle time or increased output with reduced energy consumption. Most surprisingly, the migrating additive [IncroMax 100] has also been found to increase top load strength in stretch blow moulded bottles, due to more uniform stretching. These benefits have been observed equally in virgin and up to 100% recycled PET, as well as bio-polyesters.” “We have seen continued rapid growth in the overall biopolymers market over recent years due to swelling consumer sentiment towards sustainable materials, corpo- rate responsibly initiatives, and regulation, especially around single-use plastics,” said Noyes. He explained that polyester-based biopolymers can
exhibit high friction or adhesion, which can cause process- ability problems during film and sheet manufacturing or lead to articles sticking in the mould during injection moulding, for example. Poor scratch resistance and static buildup can also be problematic. “Cargill offers a wide range of primarily bio-based additives from plant-derived feedstocks that can help with
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