PACKAGING MACHINE FOR LONG PASTA OR THE LIKES WITH ULTRASOUND LONGITUDINAL WELDING GROUP

摘要

The packaging machine for pasta according to the present invention comprises a longitudinal welding group (10) for performing reciprocal welding of folded and approached film edges of a continuous tubular envelope into which a succession of doses of long pasta or the like is inserted. The longitudinal welding group (10) comprises an ultrasound welding device (18) formed by a torsional sonotrode (19) supplied by an ultrasound generator (21) and passed through by a channel (22) opened above for the passage of said folded and approached film edges (4) and by a contrast anvil (20) housed in said channel (22) of the sonotrode (19).