| 摘要 |
A selectively temporarily and/or permanently sealable envelope or the like having a flap provided with a layer of wettable dry adhesive, a tab extending from the flap and having a layer of pressure sensitive adhesive, and means for selectively masking off, concealing and protecting the layer of pressure sensitive adhesive whereby the closure flap is selectively releasably securable to the container body by the pressure sensitive adhesive and is permanently securable to the container body by the wettable adhesive.
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