ES220574U - Hermetic shutter provision for packaging. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Hermetic sealing arrangement for containers, characterized in that it is constituted by a cover composed of a discoidal body having a lower peripheral skirt and another inner skirt parallel with respect to the first, having a means of threaded coupling on the inner face of the peripheral skirt, being attached to the lower end of this skirt, by radial ribs, a flat ring of greater diameter than the skirt itself and a lower level, endowed with a continuous interior projection at its lower end, and a container whose neck has a means coupling with the cap by threading, a protruding peripheral protrusion, below said threading, and a flat and flexible upper flange, on the inside of the neck to which it reduces the width of its mouth, so that the coupling of the cap in the neck of the container is made by screwed-in mutual, in whose action the inner skirt of the lid pushes and inclines angularly inside the neck the upper flange thereof, and so that at the end of said action, the lower ring of the lid is placed around the peripheral projection of the neck, the resilient interior of the ring itself being elastically inserted under this projection, determining the retention of the lid and sealing means d for the container, a sealing being achieved by means of the pressure contact between the lower edge of the inner skirt of the lid against the upper flange of the neck, and another hermetic seal made by the pressure contact of the edge top of the neck against the bottom of the lid between its two skirts, all in such a way that to perform the initial extraction of the cap, its sealing ring is first separated from it, by breaking its radial ribs, joining, and proceeding next to unscrewing. (Machine-translation by Google Translate, not legally binding)