Ultrasonic non woven bag sealing machine applied to seal the non woven fabric cloth or chemical fabric cloth with no thread. ... cup type masks, dust masks, disposable non-woven 3 ply face masks, etc)Details of the machine: 2,The suitable materials of ultrasonic ... should more than 30%), for instance, Nylon, needlework cloth, non-woven fabrics, T\R cloth, Tetoron cloth(Polyester cloth),multilayer cloth ...