Cardboard drum-shaped lid for canisters such as spray canisters and for containers with an engagement edge at the top

摘要

The invention relates to a cylindrical structure of tubular type 1 made of cardboard, or other equivalent biodegradable material, closed at one end by systems known in the art and towards the other end shaped by a folded-in section 5, precision hot-compressed to create an edge with partial interlocking of the superimposed upper parts 18 and with the lower end enlarged, at least on the inside 11, so that it will clip onto the corresponding engagement edge of the can, e.g. spray can or other container requiring to be closed.