WetGlueEtiketten

WetGlueEtiketten, or wet glue labels, are labels that use a moisture-activated adhesive on the back. The adhesive is typically starch- or dextrin-based and becomes tacky only after dampening. After activation, the label adheres to a surface such as packaging, cartons, or containers. This type of label is distinct from pressure-sensitive labels, which rely on a pre-applied adhesive that is activated by pressure rather than moisture.

Materials and production commonly involve a paper or film label stock with a gummed backing. The moisture-activated adhesive is usually water or humidity sensitive, allowing for a controlled bonding process. Printing methods for WetGlueEtiketten include offset, rotogravure, and flexographic processes, with finishing options such as coating, varnish, or lamination to improve readability and durability.

Application methods vary: in manual use, the backside is moistened and the label is applied by hand; in industrial settings, humidification rollers or spray systems prepare the labels before placement on products. Wet glue labels are still found in some postal services, wine and liquor labeling, and certain packaging lines where a traditional or archival appearance is desired, or where solvent-free adhesives are preferred.

Advantages of WetGlueEtiketten include strong adhesion on porous substrates, stable long-term storage without relying on viscous solvents, and potential cost benefits for large volumes. Limitations include the need for precise moisture control, slower application speed compared with automated pressure-sensitive systems, and susceptibility to premature activation if exposed to humidity before application. The choice between WetGlueEtiketten and alternative labeling technologies depends on substrate, production line, and end-use requirements.