Laminated printing refers to printed pieces that have a clear plastic film bonded to them. Printing is laminated to protect it from stains and moisture, to increase its strength and durability, and to add sheen and vibrancy to its ink colors. Lamination makes printed documents look more finished and professional.
The clear plastic film used to laminate printed matter is available in a variety of thicknesses. Some are thin and flexible, others are quite rigid. By the way, if you need a printed piece to be rigid, one tip that can generally save you money is to use a heavy cardstock to print on and then apply a thinner laminate film…as opposed to printing on thinner paper and using a thicker laminate film. If in doubt, tell your printer what your desired thickness result is and then he/she can price it out with the method most economical for you.