Formica Foliant 370T, Instruction Manual

Page: 32 / 34

32
G
6.4 Defects during lamination
The film is not pure after lamination
–
the most frequent defect with many possible causes:
•
Probably low temperature or high temperature of lamination. Set the temperature on
the heated rollers. Reducing the speed of motion usually has the same effect.
•
The paper used does not have even surface – in the holes, the glue does not enter in
contact with the paper. This may be partially removed by increasing the pressure on
working rollers.
•
Excessive amount of powder from the printing machine. Even before printing, it is
necessary to have in mind that the sheets are designed for subsequent lamination. The
selection of paper and technology of the printing should be tailored to that.
•
Insufficient braking of the foil when the foil is released. Increase the force for
releasing by the tightening nut.
Laminated formats curl in the direction following the foil – probably unsuitable
combination of the thickness of material and the angle of equalizing bar. The bar should
be tilted by several degrees in the direction of the motion (towards the main rollers).
The working rollers wrinkle the paper on the edges
–
reduce the pressure of the working
rollers. Another cause may be huge difference between the width of the foil and the width
of the sheet – see point 7 of this manual.
The foil tears in the area before the back rollers – too high pressure of the back rollers –
see Section 9 of the manual. Another cause may be excessive perforation by the
perforation wheel. This perforation may be reduced by removing certain weights, or by
setting only one line of teeth of the perforation wheel for perforation.
The edge of the foil on the paper is wrinkled
–
too high temperature of the lamination, the
foil is glued onto the roller
During the lamination, this changes after a few sheets (10 to 15) are laminated
Longitudinal folds on the paper – this occurs when thin paper is used, the cause is
excessive pressure on the main rollers. Reduce pressure on the rollers to amount to the
same value on both sides of the roller.
Laminator shifts the paper sideways
–
uneven pressure on the main rollers, the pre-tension
of the pressure springs must be adjusted
G
Accidents
If an accident occurs on the equipment, it is necessary to disconnect the equipment from the
main power source. To remove the accident, please contact an authorized repair shop.