| 摘要 |
A fluid-carrying bag (10) or container is provided as well as a method for forming such a bag. The bag (10) has identifiers (28a, 28b) indicating a status of the contents of the bag (10). To this end, a first layer and a second layer of preferably flexible material are sealed to form an interior (14) capable of holding a fluid. A flap (18) is provided wherein at least one hole (28a) may be punched through the flap (18) which is capable of detection by a sensor to indicate treatment of fluid within the interior (14) of the bag (10). One or more polarizing pieces (116a, b) may be provided between the fused layers (102, 104) in the flap (112) at a location through which the at least one hole (116a, b) is punched indicative of treatment of the fluid in the interior (108) of the bag (110).
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