| 摘要 |
Security label for use as a detector of first-time opening of an article, having an adhesive layer for application to the article, and a detection layer, the detection layer having an optical feature which irreversibly indicates an attempt at detachment from the article, the security label having an extensibility of at least 50% and being removable substantially without residue from the article by stretching, characterized in that the security label has a predetermined breakage point at which the security label can be divided into two parts on first-time opening. |
