Platelet shaped minerals like layered silicates and layered double hydroxides can play an important role in flame retardant compositions for polymers, if the minerals are dispersed in nano scale. Previous research was focused on chemical composition of the minerals, the modifiers and the role of the minerals in multicomponent flame retardant composites. One of the supposed mechanisms of flame retarding effects of layered nano minerals is to act as diffusion barrier for both combustible pyrolysis gases in one direction and oxygen in the opposite direction. Theoretically, these effects depend from orientation of the platelets, which will be tested with nanocomposites in practice. Nanocomposites of montmorillonite/polyamide-6 with different montmorillonite contents were prepared via melt compounding. These nanocomposites were shaped in standard samples for cone calorimeter tests. Tuned orientations of the platelets were set using different shaping methods like flat film extrusion, injection moulding compression moulding and combinations of them. The gas diffusion properties depending from orientation were measured. The burning behaviour of the samples was tested using a cone calorimeter. The measured burning parameters will be discussion regarding the influence of platelet orientation caused by different processing techniques. A future outlook will be given.