Tamper Evident Labeling

Tamper Evident labeling involves placing a security label over the opening, seam or other suitable surface of the package. If someone tries to open or manipulate the package, the label changes and leaves visible traces. The machine applies the labels automatically and can also be supplemented with control of placement and condition. The label does not always prevent the package from being opened, but shows that an attempt has been made to open it.

It depends on the type of security label you use. A perforated label can crack, a VOID pattern can become visible and a destructive material can break into small pieces. There are also labels with, for example, color-changing ink or holograms. The common thing is that the label should not be able to be moved or reused without it being visible that the packaging has been affected.

Tamper Evident labels can be used on cartons, bottles, cans and blister packs, among other things. For the marking to work, the label needs to fit the material, shape and opening point of the package. It should be placed where an attempt to open breaks or changes the label and at the same time adheres securely to the surface. Therefore, both the label material and application method need to be adapted to your package and production environment.

A vision system can inspect each package immediately after the label has been applied. It is a camera-based inspection that can detect if the label is missing, damaged or incorrectly positioned. A package with a deviation can then be identified and sorted out automatically. The inspection is important because the security label needs to be correctly positioned over the opening or seam for an opening attempt to be visible.

Yes, Tamper Evident labeling can be adapted to an existing production flow and combined with, for example, product marking, serialization and weight control. The label can also be designed with a logo, pattern, perforation or other security features. Which solution suits your production depends on the packaging, what kind of tamper protection you need, what controls are already in place and how the product is transported through the labeling.