Henkel AG & Co KGAA has patented a method for bonding UV-hardening adhesives (adhesive bonding of a label with a UV-curable adhesive comprises thermally applying the adhesive to a substrate, bonding with a second substrate, and irradiating with a UV source. The adhesive exhibits a viscosity of less than 5000 mPas at a temperature of 20-130 ° C. A UV-emitting LED-radiation source is used as a UV source and the temperature during the irradiation process in the substrate region is less than 80 ° C).