The use of plastics in packaging is the subject of significant criticism because of their environmental impact and lack of recyclability. This triggered the search for solutions to reduce the amount of plastics used in packaging and their recycling for a more sustainable world. In this study, we present potential solutions to reduce the amount of polymers used in packaging, with the possibility of using single polymers such as polyolefins. The potential solutions are the use of orientation processes: biaxial Orientation (BO) and/or machine direction orientation processes (MDO), using nanocomposites materials and coatings and as well as the use of renewable/biodegradable materials for barrier and seal layers. Results on MDO orientation of polypropylene (PP) films with its incidence on the structure and performances of the films will be presented. In particular, oxygen transmission rates can be reduced by more than half and the mechanical properties improved significantly. For nanocomposites, we investigated the structure and some properties of multilayer films with a core layer of nanoclay filled nylon-6 (PA-6) and PP and side layers of polyethylene (PE) that were obtained from the extrusion cast or blowing process. The effect of nanoclay content in the range of 1 to 7.5 wt% is investigated in terms of structure and performance. It was found that the clay platelets aligned in the films plane. Exfoliation was observed for the PA-nanoclay system and no change in the clay spacing in the case of PP. For the performances, it was generally found that the presence of clay enhanced the modulus, tear and barrier properties. The PE/PA-6/PE system was also MDO oriented and further improvements were obtained. For the use of renewable materials, blends of PLA polymer with other polymers such as PCL or PBAT allows to obtain various seal layer performances for various applications, in addition to compostability.