Fecha de publicación: -- Fuente: WIPO "tomato" An opening device for a package filled with a pourable product includes at least a collar having a pouring outlet and a lid configured to selectively close and open the pouring outlet and being controllable between at least a closed position in which the lid is configured to close the pouring outlet and an open position in which the lid is configured to open the pouring outlet. The collar comprises a rim delimiting the pouring outlet. The lid is rupturably fixed to the rim by a coupling membrane and during a first-time control of the lid from the closed position to the open position, the lid detaches from the rim and the coupling membrane is configured to be ruptured. The rim comprises a first end portion and a second end portion opposite to the first end portion. The second end portion comprises a radial protrusion.