Patent attributes
There is described a cap without additional seal for closing an opening of a neck of a container. The cap comprises a closing disc; a peripheral skirt sized to fit around the neck, the peripheral skirt. The cap also comprises a first annular sealing lip projecting downwardly from under the closing disc, near the opening of the neck, the first annular sealing lip being folded against the neck and toward the opening of the neck when the cap is attached onto the neck, thereby allowing neutralization of any backwash effect when the container is moved. The cap also comprise a second annular sealing lip external to the first annular sealing lip and positioned so as to be also folded against the neck, in a direction opposite to that of the first annular sealing lip when the cap is attached onto the neck.
