Method of and device for adjusting position for cutting bags and packaging machine incorporating same

摘要

A form-fill-seal packaging machine produces a dummy bag from a film (100) by starting to move seal jaws (51) after the film has been pulled over a specified length or for a specified length of time from the moment when an eye mark on the film is detected by a detector (95). If the position on the film (100) at which it was cut is displaced from the intended position, this displacement is inputted such that the specified length or the specified length of time is automatically corrected. If any of the parameters defining the pattern of transverse sealing operation is changed, the specified length or the specified length of time can also be automatically adjusted.