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GBC 620os Operation Manual
© 2007 General Binding Corporation Page 19
SPEED / TEMPERATURE CONTROL
This is only a general reference guide. Different settings may be suitable as the warm up time, lamination time and materials
change.
Factors that may affect the speed and temperature parameters;
1. Image length
2. Image width.
3. Ink coverage
4. Paper type
5. Laminate thickness
6. Operating environment
7. Condition of the rollers
8. Line voltage (effects heaters)
9. Using cooling features.
You may have to adjust temperature or speed depending on stock finish, thickness *Turn heat off when not in use.
Recommended Starting Guide:
• OPP—NAP II Adhesive (8300 Film) / 220*F-240*F. NOTE: Can not be used with prints that contain high
concentrations of silicone fuser oil.
• Digital Lay Flat/ 260*F-280*F. NOTE: To be used with prints that contain high concentrations of silicone fuser
oil. Not recommended to exceed speeds of 36ft/mn with such prints.
THE ART OF LAMINATION
BASIC RULES
• Do not attempt to laminate abrasive or metal Objects such as staples, paper clips and glitter, as they may damage the
heat or pull rollers.
• Do not force items into the nip area of the heat rollers. An item that is not easily drawn into the laminator by the heat
rollers is probably too thick to laminate.
• Wrinkles may result if an attempt is made to reposition an item once it has been grasped by the heat rollers.
• Do not stop the laminator before an item has completely exited the pull rollers. Even a momentary stop will cause a
mark (heat line) on the laminated item.
Good, consistent lamination is a result of combining proper heat, tension and dwell time. Dwell time is controlled by the speed of
the motor and is defined as the amount of time the material to be laminated is compressed between the heat rollers.
As a general rule, thicker items and film need to run at slower speeds because they extract more heat from the rollers at a quicker
rate. Setting the speed control at slower settings gives the laminator longer dwell time thus allowing proper lamination of thick
items. Thinner items, such as standard copier paper (20 lb. bond), extract less heat from the rollers and can be run at faster speeds.
FILM TENSION
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).