Solution: Reduce the heat and/or the supply roll tension. The film is not shrinking so much as it is being stretched by excess heat and tension, causing the web to get narrower as it is pulled over the shoes.

Problem: No power is getting to the laminator.

Solution: Make sure there is power at the electrical outlet being used, and make sure both ends of the power cord are firmly engaged. There are fuses inside the laminator, but dead out lets and loose power cord connections are the most common causes of this problem.

Problem: Wavy or rippled sections in the laminate, especially toward the center of the web.

Solution: These “heat wrinkles” are cause by excess temperature and/or speed for the film being used. Slow down the motor and/or use a lower appropriate temperature for that particular film.

Problem: General haziness or cloudiness in the film after lamination.

Solution: Increase the temperature. That 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 of 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 716-367-2392. Because of the potential volume of support calls, we do encourage the use of the dealer network as much as possible.