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(11) | EP 0 930 233 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Method of and device for adjusting position for cutting bags and packaging machine incorporating same |
(57) 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. |