Patent ID: 7674041

Claim:
A packaging device, comprising: a. a flexible inner container having (1) an interior compartment, (2) an opening into said interior compartment, (3) a closure mechanism for said opening, said closure mechanism being movable between an open position, in which said interior compartment is accessible via said opening, and a closed position, in which said interior compartment is substantially inaccessible, and (4) an egress port adapted to permit fluid flow out of said interior compartment; b. a flexible outer container having (1) an interior compartment, (2) an opening into said interior compartment, and (3) a closure mechanism for said opening, said closure mechanism being movable between an open position, in which said interior compartment is accessible via said opening, and a closed position, in which said interior compartment is substantially inaccessible, wherein (i) said inner container is positioned within the interior compartment of said outer container such that said inner container and said opening thereof are accessible when said closure mechanism of said outer container is in said open position, and (ii) said inner and outer containers are relatively positioned such that, when the closure mechanism for said inner container is in said closed position, a volume of ambient fluid is trapped externally of said inner container and within the interior compartment of said outer container upon movement of the closure mechanism for said outer container to said closed position; and c. a one-way valve comprising two or more juxtaposed film plies joined together with one or more seals to define a channel, and an outlet in fluid communication with said channel, said outlet adapted to permit fluid flow out of said channel, said valve being in fluid communication with said egress port in said inner container, said valve adapted to receive fluid from said egress port and direct the fluid through said channel and out of said packaging device via said outlet, whereby, when pressure is applied to said outer container, the ambient fluid trapped within said outer container transfers the pressure to said inner container, thereby urging fluid flow from said interior compartment of said inner container, through said egress port and said valve, and out of said packaging device.