| 摘要 |
A security bag includes a tamper-evident closure which provides a visual indication if the closure is opened. The closure includes an ink layer 34 deposited on one wall of the security bag or on a flexible strip 32 secured to one wall of the security bag, and an adhesive layer 36 in overlying relationship with the ink layer for sealing the bag closed. The ink layer includes a release material 40 deposited in a predetermined pattern, and a layer of a solid ink 42 applied over the release material so that the predetermined pattern of the release material is not visible in the closure. The solid ink layer includes void spaces 44 arranged in a predetermined pattern. Preferably, the pattern of the void spaces is out of registry with the pattern of the release material so that the void spaces and release material overlap to varying degrees in the closure. If the closure is forced open, the solid ink will delaminate from the surface on which it is printed, revealing in the closure the predetermined pattern of the release material. The closure may be applied to other containers such as a box. |
