Self-sealing valved bag

Claim 1

A self-sealing valved bag for fluid contents comprising a pair of elongate flexible sheet outer walls in facing relation with each other, outer walls securing means securing together said outer walls about a line configuration closed except for an unsecured region at one end of said outer walls, a flexible sheet inner wall interposed between and in facing relation with said outer walls extending generally across said unsecured region, inner wall securing means securing together said inner wall and one of said outer walls for location of said inner wall in face to face sealing engagement with said one outer wall, said inner wall securing means extending less than entirely across said unsecured region to define an access passageway communicating between the interior of said outer walls and the exterior thereof when said inner and one outer walls are displaced away from each other, additional securing means securing together said inner wall and the other of said outer walls entirely across said unsecured region, said passageway being closed by the pressure of contents in said interior urging said inner wall in sealing engagement with said one outer wall, and a mounting flap exteriorly of an outer wall and secured thereto to define a pocket extending from an opening facing longitudinally outwardly of said outer walls inwardly to and terminating in a closure longitudinally medially of said outer walls for receiving in said pocket an upstanding mounting member with said outer walls bent over the mounting member and opposite end regions of the outer walls depending stably on opposite sides of the mounting member in an operative position.