CONTACT-FREE APPLICATION OF ADHESIVE POINTS

摘要

A process for applying spots of adhesive (glue) in a grid-like configuration using nozzles (7) of a nozzle block (1) to which the adhesive is fed under pressure onto a substrate, in particular paper, guided below said nozzles (7) or nozzle block (1), the openings of the nozzles (7) being opened at predetermined intervals of time for the emergence of adhesive and then closed, a belt (5) provided with apertures being guided over the openings of the nozzles (7) in such a manner that a periodic emergence of adhesive particles onto the substrate web takes place. The process is suitable in particular for grid-shaped coating of webs of paper or plastics and has a preferred use for re-detachable labels. A device for carrying out the process is also described. IMAGE