GBC 62fm - Manual (Page 33)

13
Operating Instructions
62FM L
AMINATOR
F
ILM
T
ENSION
Proper film tension, known as brake tension, is the
minimum amount required to eliminate wrinkles in
the finished item. 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 while too
much bottom tension causes downward curl.
The heat roller clutch is set at the factory. Periodic
adjustments may be necessary if after adjusting
unwind and rewind brake tensions do not improve
your output quality.
H
EAT
The WAIT (Too COLD) indicator may appear if the
speed is set too fast for the material being laminated.
Either lower the speed setting or press
Stop and
wait until the READY indicator appears.
Operation of the laminator for more than thirty
minutes at a time may necessitate a lower speed
setting. It is recommended that, during periods of
long runs, the items being laminated are alternated
between thick and thin. Do not combine thick and
thin items at the same time, as this will result in a
poor edge seal around the thinner material. If you
are unsure that the laminator is set at the proper
speed for the item to be laminated, run a test piece
(scrap) of the same or similar material through the
laminator. This procedure is recommended because
rotating the heat roller prior to lamination will more
evenly distribute the heat. Make speed adjustments
if necessary.
O
UTPUT
“D” waves in the image (Fig. 6-25 A).
Fig. 6-25. “D” Waves In Image.
Check paper tension.
Paper may be damp or not dry.
“D” waves in the laminate (Fig. 6-25 B).
Change roller handle pressure.
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