... HDL High-speed (Three-servo) Three-side Sealing Standing Zipper Bag making MachineIntroduction This machine is a kind of modified ... All the parameters adopt CRT real-time display. The bag-making speed, bag- making length, temperature, counting, punching and conveyor ... rim charge, electrostatic elimination.9. Technology of double self-standing bag, double concave-convex buckle device is in the lead ...