MACCHINA ETICHETTATRICE CON DISPOSITIVO DI SALDATURA AD ULTRASUONI PER REALIZZARE UNA ETICHETTA TUBOLARE IN FILM TERMORETRAIBILE E PROCEDIMENTO DI SALDATURA.

摘要

The invention refers to the field of labelling of containers and in particular it refers to an ultrasound welding process for making tubular labels made of heat-shrinking film, wherein a sonotrode (4) covers an angle (²) greater than an angle (±) formed by a surmount (5) of a label (3) to be welded, guaranteeing the welding contact also with position tolerance errors of the surmount (5) due to transfer clearances or errors of the label (3).