Automatic Fabric double and sewing in bag

SPECIAL FEATURES Standard working width 280cm Working speed up to 38 mt/min Sewing stitch length from 5 up to 12 mm adjustable in real time. Up to 3400 sewing stitch for minute  Two fabric tension control systems, indipendents adjustable in real time. 1 Adjustable fabric tension in sewing phase 2 Adjustable fabric tension in doubling