... horn, core shift design, flexible adjusting.Features of ultrasonic non woven bag machine:1. Ultrasonic welding without needle and thread, ... , welding effect strong cementation dint, waterproof artistic effect, high quality.2. Processing by ultrasonic and steel roller, no damage ... this machine.5. Save cost, 5-6 times high productivity than traditional machine. Semi-automatic Non Woven Bag Machine