... bag sewing machine is applied to the non-pin sealing of chemical fiber fabrics, non-woven fabrics Ultrasonic filtering bag sewing machineModel MS ... , non-woven fabrics, thermo-melt fabrics, taking the place of sewing or down-press type welding, limitless continuous welding function, with ... line seam, turn seam and cylinder joining............ Ultrasonic flitering bag sewing machine