Patent attributes
The present application is directed to a packaging for a powdered explosive-detection training aid which may include first and second opposing flexible sheets heat sealed together along less than a periphery thereof and defining a storage compartment therebetween, wherein an unsealed portion of the periphery defines an opening to the storage compartment, wherein at least a portion of the first opposing flexible sheet is a semipermeable material permeable to a vapor emitted from the powdered explosive-detection training aid, with the second opposing flexible sheet being impermeable to the powdered explosive-detection training aid vapor; and a sealing member, wherein the sealing member is secured to the first opposing flexible sheet and, in a closing position, covers the semipermeable portion of the first opposing flexible sheet.
