... nice appearance,high-strength thermal edge sealing,high speed for gusset standing bag-making Application:This machine is suitable for producing ... air shaft for main unwinding, with air lock device, K type folding structure,LPC web guider device.4. Horizontal air ... type zipper sealer, five bridge type longitudinal heatsealer for side sealing, five cross heat sealer, with recycling waterchilling system.8 ...