CLOSURE DEVICE FOR CLOSING AN OPENING IN A NECK OF A CONTAINER

摘要

The invention relates to a self-sealing closure device for a container, comprising an insert (1) adapted to be secured within the neck (2) of said container and comprising a pouring opening as well as a cap (11) adapted to be fastened on a container neck (2). The insert (1) comprises an inwardly extending resilient conically shaped sealing means (8), which at its inner end is provided with an upwardly facing sealing face (10) adapted to sealingly cooperate with a downwardly facing sealing face (18) on the cap (11), the sealing engagement of the two sealing faces (10 and 18) being released at a predetermined internal overpressure in the container.