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7.7
The bottom idler bar should be in the "load" position i.e. nearest the roll of film. Thread the bottom
film web under the bottom idler bar and, pulling it towards you, align it with the top film web and
place it against the top film surface, which should now be tacky so that they bond together. (See Fig
7.2).
Fig 7.2 POSITIONING BOTTOM WEB
HINT :
Having threaded the bottom film web, hold it away from the top web. Visually align the two webs,
adjusting the bottom web by small sideways movements until you are satisfied it is as accurate as
you can achieve. (See Fig.7.3).
Fig 7.3 ALIGNING FILM
If the webs are not accurately aligned, the exposed adhesive will build up on the roller unnecessarily
and require more regular cleaning.
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