APPARECCHIO PER SIGILLARE TRASVERSALMENTE UN MATERIALE TERMOPLASTICO OBLUNGO

摘要

The invention relates to a device for transverse welding of elongated thermoplastic material, for example for bags for foodstuffs, upper and lower sprocket-type conveyors being provided with welding-pressing plates aligned to one another and the pressing plates being heated by means of radiation at a section, which is at a distance from the welding zone, of the conveyor-movement zone.