GBC 56FM - Manual (Page 32)

Operating Instructions
Page 6-16
56FM
F
ILM
A
LIGNMENT
A
ND
T
ENSION
Proper film alignment and tension contributes to
better lamination.
F
ILM
A
LIGNMENT
The top and bottom supply rolls must be aligned
as closely as possible. Misalignment can cause
adhesives to be deposited on the rollers.
To align the supply rolls:
Use a ruler to measure the distance between the
left edge of the roll to the brake hub support or
side frame.
Measure the distance between the right side of
the roll to the bearing support or side frame.
Fig. 6-22. Measuring Points.
Shift the roll side to side to ensue that the two
measurements are equal.
1.
2.
3.
F
ILM
T
ENSION
Proper film tension, known as brake tension, is the
minimum amount required to eliminate wrinkles
in the finished item. Tension adjustments are not
necessary if you are using 1.5 or 3 mil film unless
the lamination is curling up or down. Generally, 5
and 10 mil films require more tension. As the film
roll becomes smaller, tension increases, thus the
adjustment needs to be loosened. Film tension
should be checked occasionally to ensure that the
adjustment is correct.
The film should be taut with no gaps between the
film and pressure rollers. 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 create curl.
Too much upper tension creates upward curl.
Too much lower tension bottom causes
downward curl.
The laminator is equipped with external tension
knobs located on the left side. Turning the
knobs clockwise increases the tension while
counterclockwise decreases the tension.
T
ESTING THE
W
EB
After webbing the laminator, it is important that the
films run straight and evenly.
To test the web:
Set the roller pressure handle to an appropriate
position.
Press the RUN button and run approximately 6
in. (10 cm) of laminate.
Press the STOP button.
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•
•
•
1.
2.
3.
Measure
here