... holes, embossing and trimming on chemic Ultrasonic Non woven bag Sewing machine:1.The operations of side scraping and trimming The ... side smooth, no roughness and no coarse side. Ultrasonic sewing machine2.Make holes The holes with different patterns can be ... pillowcase, quilt cover, curtain, handkerchief, coloured flag, disposable operating coat,,hook and loop cutting,,non woven bag making,etc WSD-50B ...