Portable machine for bonding (welding) thermoplastic films or sheets

摘要: The invention relates to a portable pair of tongs for bonding (welding) sheets or films made thermoplastic, in which the energy necessary producing bond (weld) is supplied by device 2 vibrating at ultrasonic frequency. frequency preferably includes sonotrode 22, active end applied, with pressure, against said 10 are placed superposed position, example means electromagnetic members. Such can be used especially packing and packaging field.