2. During warm up the actual temperature will sometimes overshoot the set
temperature by more than a few degrees. Then when lamination is begun
the actual temperature may initially drop below the set temperature. Unless
these temperature swings are extreme there is no cause for concern.
The heat controllers each contain an intelligent processor which gauges the
heat requirements of any job being run on the laminator. The processor
adjusts the power to the heat shoes to keep the actual temperature steady
and close to the set temperature. This process of gauging and adjusting the
heat takes a few minutes. The actual temperature will become more stable
as you continue to laminate.
3. Add or remove feed tray sections. Position the two side sections for the
work to be performed. You will get the best results by centering items in the
web of film.
4. Check the supply roll tension per the instructions in the previous section.
Make sure the top and bottom supply rolls have about the same tension.
5. Once the machine has come up to temperature you are ready to laminate.
Close the pull rollers first then close the laminating rollers. Adjust the film
speed as required. Once the film starts to move watch it as it passes over
the heat shoes. Allow any wrinkling to clear out before inserting material to
be laminated. Each time you stop the advance of film, whether by opening
the rollers or turning off the drive, slack will form in the web of film. It will take
a few inches of film to get the slack and the resulting wrinkles past the shoes.
6. Examine the film as it exits the machine. If there are bubbles or wrinkles
in the film it could mean there is not enough tension to draw the film tight and
smooth over the heat shoes. It could also indicate that the rollers are not
closed.
7. As mentioned earlier in this operators’ guide many users tend to use too
much supply roll tension. Some film, such as 1.5 mil, requires very little
tension. Here are some indicators that you might have excessive supply roll
tension.
•
usually loud squealing (many films will squeal a little)
•
necking (the web of film gets narrower as it goes across the shoe)
•
No waterfalling or wrinkling anywhere on the shoe... the film is perfectly
smooth and tight across the surfaces of both shoes (please see the
previous section on adjusting supply roll tension).
26
