... bag sewing machine be applied to seal the non woven fabric cloth or chemical fabric cloth with no thread. Ultrasonic nonwoven bag ... thread replacing the sewing needles, good welding strength;3. Forming: Simultaneous cutting,sealing and embossing to make production in ... and fabric, nonwoven fabric, spun-bonded cotton, thermoplastic film, chemical plastic piece. such as nylon, polyster, ABC, PC, PE, PP ...