The car window is made from flat glass that is purified using the process of separation. This means that the glass is separately treated one from another using a liquid that is heavier then some parts of glass, in result purifies the glass from other weak glass. The fusion occurs at a temperature of 1550 Celsius degree and after the meltdown goes throw a refining procedure from 1500 Celsius to a smaller temperature of 1100 Celsius. The mixture goes throw a floating bath or is transformed in a very thin layer and it is cool down to a temperature of 600 Celsius. In this process the two parallel layers of high quality are produce. After it goes to a cooling zone the glass is cut down in pieces of 6,10 meters or 3,35 meters.
Now the glass can suffer changes in two ways:
- in a single layer that is tough and secured (TSG);
- in a multilayer laminated glass (LSG) that is used for the creation of the windshield in automobiles industry.
    The windshield TSG different from the LSG because it uses a higher thermal power and a higher mechanical power, but differences appear when the glass is broken. If you break this glass you will obtain a smoother piece without any sharp corners. Contradictory the LSG type window have a normal pattern for broken glass. If some cracks appear on a LSG model does not obtrude our visibility thru the windshield.
    This type of glass helps in reducing the risk from injure yourself because it breaks in smaller pieces and in a great number, pieces that doesn’t move after the glass is broken because of the plastic materials that exist in its composition. If we speak about Sekuriflex that is a secure glass of LSG type improved, in the interior side of this type it is applied a plastic material used for extraordinary mechanical and optical properties of the windshield.
The colored windshield, in green or bronze, is used for the absorption and to block the infrared waves but otherwise the visibility suffers modifications from 90% to 80%.

    Optical properties of the windshield
    The optical properties from the both types of glass that we previous speak about are almost the same, because of the properties that are inhered from the PVB are almost the same with the properties of a simple window glass.

    Heatable properties of the windshield
    If we speak about the safety heated glass some conductors are applied to the glass, this process is known as silk-screen. True the galvanization process we increase the power of the heat conductors, and protect them from the outside world.
The parts that contain the heated windshield must not be cleaned ever only be using corrosive liquids like: ammoniac, sand, acids or chlorine.
    To speak about the LSG windshield model, very small lines are applied in the adhesive plastic. They are connected in series mode or parallel mode to achieve an electrical resistance meant to be. The small wires that power the resistance assures a better heating process.