Patent ID: 7159718

Claim:
Container for the storage and/or transportation of liquids or powders, in particular inflammables, suitable for preventing the formation of electrostatic charge, comprising a tank supported by a pallet, housed in a metallic cage and having an outer surface in contact with said metallic cage, wherein said tank comprises a hollow body having at least one opening for loading/unloading said liquids or powders and comprises: a base layer of plastic material comprising on the outside a surface layer modified through cold plasma treatment in order to improve the wettability on said surface of the base layer and only on the outer surface of said tank, a layer of metallic material associated in superposition with said surface layer through deposition with vacuum PVD (Physical Vapor Deposition) technique and closing of said at least one opening by means allowing passage of gas from inside the tank and preventing passage of said metallic material to the inside of the tank, said layer of metallic material being in contact with said metallic cage to make equipotential the cage and the outer surface of the tank.