| 摘要 |
<p>A tamper evident packaging material (10) is described. The material (10) is formed from a substrate (12) having a weak skin layer (14) and at least one additional layer (16). A pressure sensitive adhesive (22) is applied to the weak skin layer. An electron beam cured coating (20) having a non-migratory slip agent is disposed on the surface of the substrate (12) opposite the weak skin layer (14). The weak skin layer (14) skin layer has a lower Z tear strength than the affinity that the pressure sensitive adhesive (22) has for itself and for the weak skin layer (14), such that at least part of the weak skin layer (14) separates from the at least one additional layer (16) when the pressure sensitive adhesive (22) is sealed against the weak skin layer of a second substrate and the two substrates are subsequently pulled apart.</p> |
