... of ultrasonic fusion on both sides of the mask body, just need one person put the mask one by ... of machine automation, Production Process: Import Ontology film, Sideband feeding,cut the elastic short,/welding, Side bags, side-band welding, ... ends of edges is not more than 1mm,Machine features: the machine take Small floor space, all machines use ... the use of glue. mask inner ear band welding machine