Machine Setup Procedures
Rovema VPK Operators Manual
3/2000 VPK REV(B) PANELVIEW 600
6-12
Setting the Film Tracking Position
Film tracking controls the alignment of the vertical seal. You will want
to set the film tracking position so that the edges of the film tube are
even with one another or so that the outer edge slightly overlaps the
inner edge. The process of setting the film tracking position is also
referred to as establishing a film tracking path.
To establish a film tracking path:
1.
Start the bagmaker and allow it to form bags.
Note:
At this point, it is not important whether or not the
horizontal and vertical seals are forming correctly; only
that you can see how the edges of the film tube are
aligned.
2.
While the bagmaker is running, use the MOVE FILM CARRIAGE
switch on the main menu screen to adjust the position of the film
web. Adjust the film tracking until the edges of the film tube are
even or until the outer edge slightly overlaps the inner edge.
Figure 6.12
Shows how to align the edges of the film tube.
Inside of Forming Tube
Outer Edge
Inner Edge