Liquid Container Separation Bag Convex Portions

The patent divides the container into two functional layers: the inner bag for liquid storage and the separation bag with convex portions for gas management. This segmentation allows the gas discharge function to be separated from the liquid storage function, enabling the inner bag to be fully utilized for filling while the separation bag handles gas evacuation through its convex portions that guide gas to the ventilation structure.

The patent employs a flexible separation bag with convex portions instead of a rigid exhaust structure. The convex portions are formed by localized folding or gathering of the flexible bag material, creating gas discharge channels that are effective for gas evacuation while remaining soft and compliant to prevent puncture or damage to the inner bag during the filling process.

The separation bag with convex portions is pre-formed during manufacturing with the convex structures already in place. These pre-formed convex portions maintain their shape-providing gas discharge pathways - while remaining flexible to protect the inner bag. The preliminary formation of these structural features ensures both protection and functionality are achieved before the filling operation begins.

The patent transitions the gas discharge function from a two-dimensional surface feature to a three-dimensional structure by forming convex portions that protrude into the container volume. These convex portions create gas channels that extend through the separation bag in the radial dimension, allowing gas to be discharged from the bottom region while the inner bag expands to fit the outer casing, thus maintaining both high space utilization and effective gas discharge pathways.