There’s several ways.
The most popular way is with a sealing spray. It usually comes in a standard aerosol can and sprayed from a few inches away.
Cold lamination is also common. It is manual rolling machine that evenly presses the laminate film onto the sticker. The end result is a perfectly laminated sticker with professional results.
Laminate film can also be pressed on with a flat object, such as a credit card. Starting on one side, you press the laminate on the sticker. This can work well but often provides an uneven result and there’s a strong chance of dust particles getting between the layers.
We will be providing further documentation on this topic.