Liquid Container Air Release Mechanism Filter Placement

The patent inverts the conventional approach by positioning the filter member at the opposite end of the communication channel - close to the container interior rather than the outside air. This reversal prevents foreign substances from entering the channel during filter bonding while still allowing air to pass through, as air molecules are much smaller than particulate contaminants. The filter member is bonded to the opening close to the container interior, and air is introduced from the outside through this filtered path.

The communication channel serves as an intermediary pathway that connects the outside air to the container interior while incorporating the filter member as a mediating element. The filter member acts as a selective mediator that allows air molecules to pass through while blocking larger foreign substances, thus maintaining air tightness against contaminants while permitting necessary air flow for pressure equalization.

The patent inverts the conventional air release approach by introducing air from the outside through the filter member rather than allowing air to escape directly to the outside. The air release passage is configured to introduce air from the outside air side through the filter member to the container interior, reversing the traditional exhaust direction. This inversion ensures that air enters through a filtered path while preventing foreign substances from entering the passage.

The filter member is positioned and bonded in advance before the air release operation occurs. This preliminary positioning ensures that the filtering function is already in place before any air flow or potential contaminant entry can occur, preventing foreign substances from entering the air release passage during the air introduction process.