This machine is controlled by micro computer. The materials are fed by stepping motor .Servo motor control system is spinal, Length is made freely and followed by sensor correctly and stably. When the label is missed, the machine stops. Feeding system adopts photoelectric follow-up ，automatic counting。Bell warning can be set up ,automatic permanent temperature make bag edge seal firm and stable. Both lines and four lines can be used .Welding adopts double-layer four-line stand , which can enhance economic benefits, save labors.

1 .fuselage structural design streamlined.

2 .No material, blocking bags automatically shut down.

3 .microcomputer control, stepper motor prop material (optional servo motor control system)

4. The temperature error is small, bag length can be adjusted freely buttons.

5. photoelectric tracking, stopping automatically when the label lost.

6 .feeding, back cover, cutting, notching, conveying one time.

7. high degree of automation, good economic returns.