A system for the ecological labeling of trays, containers and rectangular and parallelepiped products. It allows for application on the upper surface, sides and base of the product. The compact main base in stainless steel can be equipped with a thermal transfer digital coder (can be linked to a set of scales). The limited thickness of the Linerless material, free of silicon liner, and the “short step” advancement allow for the great capacity of the label reels and consequently significant operative duration