How Car Wraps Work

Through vacuum spraying or magnetron sputtering technology, metals such as aluminum, gold, copper, and silver are made into multi-layered and dense high-insulation metal film layers. The outer shell electrons (free electrons) in metal materials are generally not bound by the atomic nucleus. When illuminated by light waves, the electric field of the light waves causes the free electrons to absorb the energy of the light and produce oscillations with the same frequency as the light. This oscillation emits the same energy as the original. Light of the same frequency is called reflection of light.
The higher the conductivity of the metal, the shallower the penetration depth, and the higher the reflectivity. These metal layers will selectively reflect various thermal energy in the sun, including infrared, ultraviolet and visible light heat energy, and then cooperate with the color on the film to absorb the solar thermal radiation, and then release it to the outside again. The air flow takes away some of the heat. This effectively acts as a heat insulator.