Product Application Heavy duty laminated bag making machine,is used for producing various kinds of laminated soft package bag,such as three side sealing bag.stand up bag,zipper bag,spout bag. Main Features 1. Large human-computer interface screen control,automatic design. 2. It has EPC and double photocells tracking for unwinding. 3. Heavy-duty brige type heat sealing structure,will get stronger sealing. 4. Unwinding with automatic tension control.