In the framework of novel alternative commercial packaging solutions, starch based systems are one of the most successful, most probably, due to its abundance, low-cost and fast biodegradability. At the same time because of poor mechanical properties, relative humidity dependant properties and limited processing ability starch is commonly modified by appropriate plasticizers under the heat and shear motion, as a result thermoplastic (TPS) or plasticized (PS) starch with improved exploitation and processing properties are obtained. Additionally it is often necessary to increase water resistance, mechanical properties, barrier properties of starch based packaging materials by addition of appropriate reinforcing agents, among which layered silicates (montmorrillonite, vermiculite clays), silica, alumina are often used.