Reliable identification in every process: what matters when selecting materials. News | 04.05.2026

In theory, a label can be applied quickly. In practice, however, factors such as surface tension and environmental conditions determine whether the process succeeds or fails in industries such as steel, construction and automotive. If labelling fails, the information chain is broken. But what technical reasons can cause poor adhesion?

The surface is a decisive factor

A key aspect is surface energy. While metals or glass (polar surfaces) are usually easy to label, plastics such as PE or PP (low-energy surfaces) place high demands on the adhesive. Added to this is the surface texture: rough or textured substrates require significantly softer adhesives that can 'flow' into the depressions to form sufficient contact.

Contamination and separating layers

Dust, loose scale or moisture can act as a barrier. Oily surfaces are particularly problematic. While standard adhesives fail immediately in such cases, special formulations are required that can penetrate or displace the oil film in order to form a permanent bond with the substrate.

Durability under tough conditions

The choice of material determines the choice of process. Does the label need to be removable without leaving residue, or is permanent marking required? In outdoor applications, UV radiation and weathering are factors, while in production, chemicals or extreme heat can affect the material.

Readability is often underestimated

A label that is too small forces a print image that is too fine. The result is poor scan rates and unnecessary manual rework in logistics.

Conclusion: Reliable identification is not a matter of chance, but the result of precisely coordinating the material, adhesive and application environment.