PROBLEM:
General haziness or cloudiness in the film after lamination.
SOLUTION:
Increase the temperature. The cloudiness is a function of
incomplete adhesion. On a variable speed machine loaded with thicker film it
may be that the film is being run too fast and is not getting enough time on
the heat shoes.
PROBLEM:
Bubbles in the center of the web and/or film not sticking to the
center of an item.
SOLUTION:
This problem can be caused by excessive laminating roll
pressure. Putting too much pressure on the laminating rollers actually
decreases pressure in the center of the web.
The other likely cause of this symptom is worn rollers. For example, if
hundreds or thousands of 18-inch wide sheets are laminated on a 38-inch
machine, the center of the rollers can get worn down more than the ends of
the rollers. In this situation, the laminating rollers should be replaced. The
rollers worn in this way are not suitable for use as pull rollers.
For problems not listed here contact your Ledco Dealer. If the Dealer doesn’t
know the answer please ask the dealer to contact Ledco and get back to you.
You are also welcome to contact us directly with any problem at 585-367-
2392. Because of the potential volume of support calls we do encourage the
use of the dealer network as much as possible.
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