filter tube welding machine hot air tube machine hot air melting machine Filter tube welding machine Hot welding machine specification Welding speed 15m/minPresser lift height0-20mmWidth of connector10mm,12mm,14mm,16mm,20mm,22mmDiameter of bag body80mm-200mmmotor550wvoltage220v/380VHot air temperature50-600°C digital controlApplication materialpps,PP ,Polyester