... 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 ... is a principle of the use of ultrasound to make cloth, leather, plastics, non-woven fabrics, acrylic ... use of glue. mask inner ear band welding machine