... making Machine make multi-layer three-side sealing laminated bags for food,powder,sweets BOPP,PET,CPP,PE, nylon HDL High-speed ... or multi-layer three-side sealing laminated film bags (bags for food, washing powder and sweets, etc.) which take BOPP, PET, ... adjustable magnetic powder constant tension control system.4. Automatic alarm for releasing tension, central tension, colour code losing and out of ...