High filled polyolefin with mineral fillers (talc, TiO2, CaCO3…) are currently used in industrial and food packaging. These additives bring some specific properties like UV protection or thermo-mechanical properties, but are sometimes associated to specific extrusion troubleshooting like die build up or die drool. These refer to the continuous or intermittent accumulation of materials around the die exit, due to chemical factors linked to the polymer composition itself, physical factors related to the process setting and environmental factors like moisture. This phenomenon is widely known in production as it can affect dramatically the productivity due to off spec products and periodic shut down for cleaning. For a practical standpoint, applying extrusion coating to polypropylene (PP) allows designing a wide range of multilayered structures with an improved thermal resistance. This environmentally friendly process is also particularly attractive thanks to his high productivity but these products are sensitive to die build up due to the high extrusion temperature, moisture and the presence of mineral fillers. This presentation will try to give an up to date overview of the state of the art and give a practical fluoropolymer use as processing aid to reduce die build issue in PP extrusion coating.