| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a bag packaging machine forming vertical sealing which has beautiful finish and excellent sealed state regardless of the length of a vertical seal part.SOLUTION: A bag packaging machine comprises: vertical seal means 20 which carries out vertical sealing in an overlapping part W at both side edge parts of a film F; and transportation means 30 which transports the film F, in which the vertical sealing and the transportation are alternatively repeatedly performed. The bag packaging machine includes: a driving device 22 which moves the vertical seal means 20 between a sealing position where the vertical sealing is formed and a retreat position where the vertical seal means 20 is retreated from the overlapping part W; and a controller 50 which controls the transportation means 30 and the driving device 22. The controller 50 stops the transportation means 30, when the vertical seal means 20 is positioned at the sealing position, not to transport a cylindrical body C. The controller 50 drives the driving device 22, when the vertical seal means 20 is moved from the sealing position to the retreat position, to transport the cylindrical body C by a transportation amount Fn. The transportation amount Fn is set so that front and rear vertical seal parts Tare overlapped just as much as a uniformed length.</p> |
