GBC | Operation Manual |
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). Uneven tension between the top and bottom rolls creates curl. Too much upper tension creates upward curl.
- A - | - B - |
FIGURE 39
- A - | - B - |
FIGURE 40
- A - | - B - |
FIGURE 41
Heat
The “READY” indicator may extinguish 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 illuminates. 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.
Output
1.“D” waves in the image (Fig. 39 A).
•Check paper tension.
•Paper may be damp or not dry.
2.“D” waves in the laminate (Fig. 39 B).
•Check main roller pressure.
•Check pull roller pressure.
3.Straight waves in output (Fig. 40 A).
•Check operational settings for materials being used.
•Check clutch tension.
4.Indent waves in output after pull rollers
•Insufficient cooling time.
•Output was handled prior to cooling.
•Use cooling feature if not on.
•Machine was stopped on print.
5.Angled waves in the output
•Main air Supply setting
•Check main Roller Pressure.
•Check main roller pressure.
•Check pull roller pressure.
•Check for Paper Tension.
© 2009 GBC an ACCO Brands Co. | Page 32 |
