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Retortable High-Barrier PP-based Packaging Laminates fit for Circular Economy Introduction: To achieve the ambitious CE targets proposed worldwide by brand owners, converters and authorities, the development of mono-material packaging systems is one important pathway. PP-based packaging films are highly versatile, enabling converters and brand owners to provide fine-tuned packaging laminates for almost all filling goods and barrier requirements. One of the last missing links for BOPP-films are (ultra-) high barrier applications with high thermal stress, e.g. retort-processes from 121°C/ 30 minutes to 129°C/ 45 minutes, in some cases even up to 135°C, retaining barriers of OTR and WVTR < 1 cm3/ m2 day bar resp. g/ m2 day. Although the retort market volume is quite small (Pouches are expected to be 28.110 million units globally by 2029 compared to 15.925 million units in 2020), there is a big demand of high-added value packaging solutions, which is at the moment dominated by more temperature stable (BO)PET-based materials. Currently there are hardly any PP-based solutions available on the market. Approach: The key to a retortable, PP-rich high barrier film laminate is the right choice and combination of several PP-film elements: An ultra-high-barrier (UHB) basefilm with low shrinkage characteristics and increased temperature resistance (B), pre-treated and glass-coated with SiOx or AlOx (G), furnished with a suitable and temperature resistant top-coating layer and finally laminated against a retortable c-PP layer (TC L) (figure 1). Crosslinked topcoat on glass coating// lamination against c-PP (TC L) ...