Laminating is a common technique used by many people daily, such as laminating documents, photos, notices, menus, and more. It's waterproof, wrinkle-resistant, and aesthetically pleasing.
But a common question is:
What's the appropriate laminating temperature?
1. What is laminating?
Laminating involves sandwiching paper between two layers of laminating film and then using the high temperature of a laminator to "heat-press" the films together. The laminating film contains a layer of adhesive that melts when heated, clinging to the paper before cooling and setting.
Thus, the temperature plays a crucial role:
Too low a temperature can cause the film to adhere poorly and warp at the edges;
Too high a temperature can cause the film to bubble, wrinkle, or even burn and deform.
2. Common Laminating Temperature Ranges
The required temperature varies depending on the thickness of the laminating film.
The most common film thicknesses are 80 and 100 microns, and a temperature setting between 100°C and 130°C is generally sufficient.
Thicker films, such as 125 or 150 microns, typically require a temperature between 120°C and 150°C.
Some laminators have automatic temperature control; simply select the film thickness and it will automatically set the temperature.
If your laminator has a manual temperature control, start at a low temperature and gradually increase the setting until you see a smooth, adherent seal.
3. How to tell if the temperature is set correctly?
It's simple. After laminating, observe the following points:
If the laminating film adheres tightly, without bubbles or wrinkles, and the edges are well held, the temperature is just right.
If the film doesn't stick to the edges and peels easily, the temperature is not high enough. Try adding a little more.
If the film bubbles, turns white, warps, or even has a slight burnt smell, the temperature is too high and should be lowered.
4. Pay attention to these small details when laminating
Before laminating, it's best to test a sample, especially for important documents, to avoid immediate failure.
When cutting after laminating, it's best to leave a small margin and avoid applying too tightly, as this can easily cause the film to crack.
After laminating, do not fold or roll the film immediately. Wait until the film cools before using it for a more secure finish.
After using the laminator, remember to turn it off immediately to avoid damage from prolonged heat.
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