First, they added a layer resistant to ultraviolet (UV) in the colored class. Two-layer sheet has overcome the effects of fading due to sunlight, heat removal capability is also improved, though still a few points of error concern loosen adhesive film, air bubbles, ripples waves.
Hybrid films including layers: metallic coating, colored layer After that, manufacturers continued to add layers of metal thin film dye before and after UV resistant layer. Capable of removing excess heat by the principles reflected light by 40%, reducing the error on the second film layer, extending the life of the film, but the downside appears likely reduce light transmission.
A revolutionary efforts in the movie against heat. Manufacturers are trying to do the film becomes transparent. To do this, they need to know we feel the so-called "heat" from the three main signal sources: 38% of visible radiation (light), 5% of ultraviolet radiation (UV), 56 % infrared radiation (IR) Movies colored light most resistance, then the ultraviolet, the metal layer "lock" the infrared part. Manufacturers need to realize that "lock" completely and let infrared light passes through more.
They start by examining the layers made of ceramic and carbon materials and have found the desired genre: film spectral selectivity. These plates are designed to "lock" 70% - 90% of infrared radiation, while only 10% of course - 30% light. They are transparent plate, blocking from 40% to 65% heat will pass through the glass.
There is a difference between heat-resistant film used on car and on the glass door. Heat-resistant film is designed to be safe for cars but not good for the window film used by the automobile to absorb more heat is reflected heat. Movies for the opposite window, reflecting more heat absorption. Another reason is because movies require high light transmission to drive the observer.