| 摘要 |
A flexible valve includes two or more juxtaposed film plies joined together with one or more seals. The valve is movable between (1) an ingress position to allow fluid flow through the valve in a first direction, e.g., into a container with which the valve is associated; (2) a seal position to substantially prevent fluid flow through the valve; and (3) an egress position to allow fluid flow through the valve in a second direction, e.g., out of a container with which the valve is associated. |
