... 500 High-speed (Three-servo) Three-side Sealing Zipper Standing Bag-making MachineIntroduction This machine is a kind of modified Model WSD ... -side sealing laminated film bags (bags for food, washing powder and sweets, etc.) which take BOPP, PET, CPP, PE, nylon, ... of temperature limit, etc.5. LPC automatic deviation-rectifying, double photoelectric tracking.6. New type pressure-lifting 6 times conveying ...