METHOD AND SYSTEM FOR PREVENTING THE INTAKE OF AIR AND OTHER CONTAMINANTS INTO SEALED CONTAINERS

摘要

The invention relates to a method and system for preventing the intake of air and other contaminants into sealed containers which may be made from a rigid material or a flexible material with or without shape- and/or volume-recovery properties. The invention comprises: a) a rigid container or a flexible or elastic container which recovers the initial shape and/or volume thereof upon removal of pressure therefrom; b) a nozzle element, a non-return valve or check valve being disposed in said nozzle or outlet for releasing the liquid from the container; c) an optional separator element in the form of a membrane or bag which separates the liquid and which fills the space previously occupied by the extracted liquid with an equal amount of air from the exterior; d) a check valve through which air can enter the container; and e) a cover or cap which is shaped internally such that it can be fitted to the end of the nozzle and which is pressure-coupled thereto, thereby creating an additional seal when the cover is pressed or screwed on. In all cases, independent chambers are created for the liquid and the air.