GBC VOYAGER Instruction Manual page 43

Voyager Operation and Maintenance Manual
Snap rollers
The action of the Snap Rollers is controlled by
two flow control valves at the rear of the machine. By
limiting the amount of airflow, the speed of the roller closing
can be controlled. Limit the amount of air flow for the
roller to close, and snap the sheets, with the operator side
closing slightly ahead of the drive side.
Skew wheel assemblies
This assembly consist of 2 Exit rollers on the
operator's side. Pull the web out straight and one angle
roller assembly on drive side. Skew the web to the right,
causing the side to bow upward. This bow is controlled
by the amount of angle and pressure ( which are adjustable
) that is applied by the skew wheel.
The amount of web bow should be just high
enough to allow sheet separation by snap rollers. This
bow allows a flatter left to right closing of the snap roller -
giving a cleaner separated edge to the sheet.
Adjustments during a run
When you are increasing both roller temperature
and nip pressure from slow starting, alternately increase
one and then the other to keep from setting either
temperature or pressure higher than necessary.
© GBC Films Group April 2000
If the sheet wrinkles going into the nip, decrease
the nip pressure.
When you must adjust the nip pressure, remember
that this adjustment can change the amount of under lap.
Do-earing at the breaker bar indicates that the
amount of under lap needs to be reduced.
Check often during the lamination operation to
see whether film tension is correct. Too much tension can
cause curl or necking. As the film rolls get smaller, the
tension needs adjustments to keep getting the same results.
Changing speed of operation may require a change in
tension.
If the tension was set without slitting, applying the
slitter will probably result in the need to adjust the tension.
Heat from the laminated web warms the breaker
bar assembly. After the assembly has warmed up, you
may need to adjust the breaker bar to obtain the best
break.
The tendency of the web to curl is affected by
laminating temperature and film tension, therefore
adjustments in those machine settings may result in a need
to adjust the breaker bar. Another factor that affects
curling, is moisture in the sheet.
Application
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