Tension - usi MRL Series Operation And Maintenance Manual

TENSION

To adjust tension for upper and lower film rolls, the laminator
must be loaded and heated.
• Remove the feed tray.
• Loosen both tension control knobs by turning
counterclockwise until there is no tension on
upper or lower film roll. Film should pull freely.
Turn the drive switch "ON."
• As film runs through it will appear wrinkled and bubbly.
Gradually increase tension on both rolls, by turning
knobs clockwise, until film is smooth on heat shoes.
Once film is smooth, stop tightening knobs.
• Once the laminator is loaded, heated and tension
adjusted, re-install the feed tray.
HELPFUL HINTS
For best results, reset tension with EACH new pair of film rolls.
As the film roll supply becomes low it is necessary to decrease
tension on the rolls. Reset at approximately the last
1/3 to 1/4 of a roll.
Too little tension on the top or bottom roll causes vertical or
diagonal streaks in the film as it passes over the heating shoe.
If the laminator's speed is set too fast when using thicker films,
wrinkling and bubbling may occur.
WARNING: Excessive tension will lead to increased wear and
tear on the laminator.
12
USI • YOUR SOURCE FOR LAMINATION
Photo 12A.
Loosening tension.
Photo 12B.
Clear film exiting laminator after
correct tension is applied.