GBC VOYAGER Instruction Manual page 37

Voyager Operation and Maintenance Manual
5.5 Heating
The heat is supplied by a 24 k W water heater,
which transfers heat to its very smooth outer surface for
optimum heat transfer to the film. The heat has a self-
contained controller which maintains a very precise
temperature. With 24,000 watts of heating power, the
system heats very rapidly and remains at +/- 5
o
C ) of set temperature at full speed with the full range of
paper stocks and sizes. The closed-loop water heat
system provides both large amounts of available heat at
the nip, yet prevents large temperature swings up or down
from the set.
The temperature control unit is easy to use, and
performs a self-diagnostic during start-up.
INFORMATION
When using
- must be pressed in conjunction.
There are a few rules of thumb that you may use
as a starting point in selecting the roller temperature.
a. For polypropylene films, the temperature will be in the
o
range of 200 to 240 F ( 90 to 115
© GBC Films Group April 2000
o
F ( +/ - 2
or ,
o
C ).
b. For polyester films, the temperature will be in the range
o
of 240 to 260 F ( 115 to 127
c. For GBC LAY-FLAT Films, the starting point
temperature will be between 250 to 280
o
C ).
Thicker paper, darker colors and higher speed of
operation result in a need for higher temperatures.
At the upper end of their usable temperature
ranges, films tend to get soft and "neck" ( get narrower
because of stretching ). in extreme cases become wrinkly.
Polypropylene is especially likely to suffer these distortions.
When shutting the system down for the day, bring
temperature of closed-loop system down to at least 180
o
F before removing power to the unit.
Cooling is accomplished by domestic water and
a heat exchanger, which allows instant change over of
films that require lower temperatures. Cooling for
shutdown is only a matter of minutes.
Touching the heat roller during operation
or soon after shutdown can result in
severe burns !
Application
o
C ).
o
F ( 121 to 138
WARNING
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