Void Labels for Tamper-Evident Packaging and Security Applications

A label is not always used simply to display information. In some applications, it also needs to show whether a package, enclosure or secured area has been opened. Void labels are designed for this purpose, providing visible evidence of interference when somebody attempts to remove them.

STIKON's S-VOID security label range includes residue, no-residue and total-transfer options. These products are available in different sizes and formats for packaging and other security applications, allowing customers to consider the surface and the type of tamper evidence required.

How Void Labels Work

Tamper-evident labels are designed to change when removed. Depending on the construction, a VOID message may appear on the label, transfer to the surface underneath or become visible on both.

This makes it easier to recognise that the original seal has been disturbed. It also means that choosing the correct label involves more than considering its size or appearance. The surface material and the desired result after removal are important factors.

STIKON offers a transparent S-VOID residue label measuring 50mm by 20mm. It is designed for smaller packaging, including envelopes, and leaves a VOID message on the label and the surface beneath when removed. The product is supplied with sequential number printing as standard.

Residue, No-Residue and Total-Transfer Options

Different applications can call for different security label constructions.

Residue labels leave visible evidence on the underlying surface when removed. This can be useful where the packaging or item should retain a clear indication of interference.

No-residue labels reveal tampering without leaving the same type of adhesive residue on the surface. They may be preferable when the appearance or condition of the underlying material needs to be maintained.

Total-transfer labels are designed to make the security message visible through transfer between the label and the surface. STIKON lists all these types within its security label range, with options in different sizes and formats.

The most appropriate option depends on the material being sealed and what should happen if the label is removed.

Where Void Labels Can Be Used

Void labels can be used on packages and products where a visible indication of opening is important. STIKON's transparent residue labels are intended for applications such as cosmetics, pharmaceuticals and electronics packaging. The product information also identifies paper, cardboard and laminated packaging as suitable surfaces for that label.

For other requirements, STIKON lists security labels intended for doors, compartments and aircraft applications, including numbered, no-residue options. This demonstrates why the intended use should guide product selection rather than assuming that one label will suit every surface.

Selecting the Right Security Label

Before choosing void labels, consider the material, the size of the sealing area, whether numbering is required and whether residue should remain after removal. It is also sensible to check the manufacturer's guidance for the specific product and test compatibility where necessary.

STIKON's S-VOID range provides several approaches to tamper evidence, from transparent labels for smaller packs to other formats for specialised security requirements. Selecting the right construction helps make interference easier to identify while keeping the label suited to the item being protected.