Laminate flooring is put together in two different ways.The most common is called Direct Pressure in which all the layers are assembled at one time, then heated and pressed together to create the finished product. A more recent innovation is laminate flooring, a technique in which the top and bottom layers of laminate flooring are treated separately then fused to a middle or core layer under extreme pressure.
In both cases of course, laminate flooring is made of various layers that are fused together:
Wear Layer: This is the one you walk on. It's usually made from cellulose saturated with melamine plastic resins, resulting in a very durable surface that’s remarkably scratch-resistant.
Design Layer: This is the image you see, usually a photograph or a pattern of some kind that has been printed onto cellulose paper. It is protected by the upper melamine Wear Layer, which keeps it from being scratched or becoming faded
Core Layer: The core layer is usually some form of processed particle board and comes in different strengths and thicknesses.
Stabilizing Layer: This is the bottom layer that holds everything in place. It's usually made from resin-saturated paper, just like the top layer, just not so highly finished.
Recently, some brands of laminate flooring also add an underlayment attached to the bottom. Often during traditional installation, installers might use cork, felt, foam, or some similar material under the laminate to absorb sound and cushion the floor.The benefit of this underlayment is that it can eliminate the need to install any separate additional materials.