6.0 ADJUSTMENTS
6.1 Film Roll Adjustment
Proper film tension, known as brake tension, is the minimum amount required to eliminate wrinkles
in the finished item. The film tension is set at the factory. Tension adjustments are not necessary if
you are using 1.5 or 3-mil GBC film, unless the lamination is curling up or down. Generally, 5 and
10-mil film requires more tension; and, as the film roll becomes smaller, tension increases, requiring
more adjustments. Film tension should be checked occasionally to assure the adjustment is correct.
The film should be taut. A properly adjusted roll of film should not require excessive force to turn
by hand. Film tension should be enough to introduce a minor amount of drag as the film unrolls.
Insufficient tension causes wrinkles, while too much tension causes stretching (necking). Uneven
tension between the top and bottom rolls creates curl.
Too much upper tension creates upward
curl (smile). Too much lower tension causes downward curl (frown).
6.1.1 Ultima 65 Brake Adjustment Procedure
1. To adjust the bottom brake, push and hold the brake lever located on the left side frame
by the roll film. Rotate the roll of film until the lever engages the internal mechanism.
Once engaged, rotate the film forward to increase the tension and backwards to decrease
the tension.
2. Release the brake lever and check the tension by rotating the roll of film. Resistance
should be slight, not forced.
3. To adjust the top brake, repeat steps 1 and 2.
4. Laminate some test samples to check for proper tension. Readjust if necessary.
6.2 Roller Pressure Adjustment
The tension on the roller pressure springs determine the pressure between the two top rollers and the
associated bottom rollers. Ordinarily, the springs require no adjustment. However, if the springs
have been removed or if the tension has been changed, readjustment will be required. Replacement
should be considered for those springs that can no longer be adjusted or have little effect. The
pressure applied should be enough to enable the rollers to pull the film and product being laminated
through, however it should not be so great that it causes marks on the film or product.
6-1
Summary of Contents for Ultima 65
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Page 38: ...8 1 1 COVER ASSY AND FILM ROLL SUPPORT 8 1 ...
Page 40: ...8 1 2 CASE AND TRAY ASSEMBLY 8 3 ...
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