... sealing machine applied to seal the non woven fabric cloth or chemical fabric cloth with no thread. ... bags, face masks, respirator (cup type masks, dust masks, disposable non-woven 3 ply face masks, etc) Ultrasonic lace sewing machine uses ... materials contain chemical fiber blending cloth, chemical film(chemical fiber should more than 30%), for instance, Nylon, needlework cloth, non-woven fabrics, T\R ...