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Bubbles between film and paper

Bubbles can be caused by lack of supply roll tension, the film is not threaded correctly, if the temperature is too low, or if the laminating rollers are open.

Bubbles on the leading edge of the sheet being laminated is characteristic of what happens when the item is pushed into the nip faster than the speed of the laminator. Bubbles can be captured in the same manner when the back of the item is lifted off the feed tray or when the item is pushed too quickly as it is being fed.