... of machine automation, Production Process: Import Ontology film, Sideband feeding,cut the elastic short,/welding, Side bags, side-band welding, ... use,but need change the mould and the parts.2, The machines use up to four 1500w ultrasound system ... ends of edges is not more than 1mm,Machine features: the machine take Small floor space, all machines use ... use of glue. mask inner ear band welding machine