Solar control adhesive films for glass
This does not claim to be a technical physics treatise, but simply a descriptive and simple page to get some more information on the films we sell. The Antisolar Films are very thin multilayer polyester films (usually 2 or 3 layers) born with the idea of being able to screen the windows of the home and office in a simple and minimally invasive way. The solar control films installed on the glass, interact with the Solar Energy through 3 basic parameters:
- Reflected Energy: the dimension that always features a good reflective film;
- Absorbed Energy: the share that captures the material and then returns it to the external and internal environment by radiation; this is a parameter that can indicate how much the film will heat the glass;
- Passing/transmitted energy: the amount of energy that the film does not retain and passes directly into the interior
The heat yield of a material is summarily given by the sum of the Reflected Energy and Absorbed Energy (decreased by a few points) and they reject up to 99% of the Solar Energy incident on the surface, a thermal reflection implies a lower entrance into the heat building , the thermal abatement of the surfaces irradiated behind also reaches 20-25 degrees centigrade. This translates into an effective improvement of livability within inhabited spaces. The lower incoming heat will allow you to keep the rooms cooler by limiting the use of air conditioners and consequently saving money.
The laying of a technical material, like the heat film, is always a function of different parameters: type of glass, fixture, exposure, shadows, internal / external curtains. Consider that your glass during normal life is traversed by the incoming Solar Energy; if the glass is not treated in any way, by its nature it tends to let the Energy pass (holding a small amount), when you go to apply a film this Energy passage is modified and here the parameters of Reflection and Absorption come into play . If the film is applied Externally the amount of Reflected Energy will return to the outside, the Absorbed Energy will be partly rejected to the eternal and partly inside therefore this is the situation of maximum security for the glass because the most of the 'Energy is "expelled". If the film is instead applied internally the situation is much more delicate because they create double energy passages on the windows and situations of "cage" energy if you have glass with air space that will have as main effect the overheating of the glass. Overheating creates expansion (pushed on the frame, stress in points with microintrusions in the silicate, situations of delta temperature if you have shadowing ..) that can lead to thermal shock and glass fracture. To summarize, let's say that the internal installation can be carried out without major problems on clear monolithic glass and tempered glass and small simple glass windows, in all other cases (laminated glass type 4 + 4 also called security or anti-splintering or shatterproof, glass with gas, glasses with wire mesh, double-glazed windows, colored glass in origin, low emissive glass ...) the internal installation is to be avoided; if you have doubts contact us for a thermal analysis.
Because of their constructive nature, the specular heat-resistant films, created by vaporising noble metals on the surface of a resistant polyester, polarize the light and diminish the annoying blunder created by the diffraction of the sun's rays into the atmosphere. The protective layers against harmful UV rays and an anti-scratch layer will allow the films to be preserved from deterioration and at the same time will prevent all objects inside the house from becoming discolored over time.
Le The heat films can be of different types: Metallic films (both mirrored and non-mirrored films), Sputtered and Multilega films (reduced mirror effect), Nano Ceramiche films (very high transparency and good yields) and finally Colored films (transparent, car type) . The heat films are also indentified with the darkening films even if this definition is not popularly correct because the visible light passes through the films even if filtered according to the interposed material.
Eliminate dazzle and Polarizing the Light
Anticore films (metallic, sputtered and colored), contrasting the annoying reverberation and eliminating the dazzle, make the light entering the windows pleasant and reduce the visual fatigue. Subjects sensitive to U.V. will benefit greatly from the application of films, as more than 99% of the radiation in question is eliminated.
With the installation of reflective mirrored metallic films, the Polarization of light occurs. In a rough manner it can be said that the metal particles uniformly distributed on the surface of the film, at a precise distance which is equivalent to the incident wavelength, dampens (depending on the degree of metallization) the oscillation of the electric field along the direction orthogonal to them by selecting the polarization parallel to them, ie eliminating those unwanted radiation (increase in contrasts and elimination of part of the reflections).