Standard Melt Laminating Film

Film thickness is measured in mil (thousandths of an inch). 1.5 mil is flexible and best for items that will be folded or rolled after lamination. 3 mil is the most popular general-purpose thickness and is the right choice for everyday documents, schedules, menus, and frequently-handled papers. 5 mil produces a noticeably stiffer result similar to a laminated card, preferred for signage and documents that need to stand on their own. 10 mil produces the most rigid finish and is used for ID-style items and documents that need maximum durability. Confirm that your laminator's roller pressure is compatible with your chosen thickness before committing to a full run.

Yes. Standard melt laminating film from different manufacturers in the same width and thickness runs interchangeably on any roll laminator that reaches the standard melt temperature range. The adhesive chemistry and polyester base are functionally identical across brands at the same specifications. The only critical compatibility factor is core inner diameter: 1 inch core film will not seat on a 3 inch mandrel without an adapter, and vice versa. As long as the width, thickness, and core size match, any brand substitution is safe.

The most common causes are running at too low a temperature (usually from leaving the machine in a low-melt or cold mode setting), feeding too quickly for the machine's heaters to fully activate the adhesive, using film that has been stored in a high-humidity environment (which can degrade the adhesive layer), or feeding documents that have moisture content from a recent printing run before the toner has fully cooled and set. Reset the machine to its standard melt temperature profile, reduce feed speed by one step, and allow laser-printed documents to cool for at least 15 minutes before laminating.

The core diameter refers to the inner diameter of the cardboard tube the film is wound on. A 1 inch core fits the smaller mandrel spindles found on most desktop and light commercial roll laminators. A 3 inch core fits the larger mandrels on heavy commercial and production laminators. Running 1 inch core film on a 3 inch mandrel requires an adapter sleeve; running 3 inch core film on a 1 inch mandrel is not possible without a mandrel replacement. When ordering film, check the mandrel diameter listed in your laminator's specifications, not just the throat width.