In general, there are a number of useful flame retardant classes available such as halogenated compounds [41], inorganic miner-als [42], organo-phosphates [43], nanocomposites [44], nitrogenderivatives [45,46] and combinations [47] thereof that have theability to inhibit combustion and smoke generation in plasticsand other materials. However, the development of flame-retardanttechnologies for extrusion coating products is very challenging.Current flame retardant families have great difficulties in meet-ing several of the stringent requirements for imparting flameretardancy to extrusion coated multilayer materials [48]. The firstdifficulty – and the most stringent one – is that the flame retardantneeds to withstand very high processing temperatures withoutthermally induced decomposition. In practice, large-scale extru-sion coating of polyethylene onto paper substrates is performedat temperatures of ca. 300◦C in order to achieve sufficient levelof adhesion between the polyolefin and paper substrates