Automotive Glass
Glass is of especial importance in the automotive industry. In fact, the glass industry, due to its elegance and sensitivity, is considered as one of the most significant industries, because the nature of the industry necessitates high quality and safety. It is worth mentioning that when you buy a car, one percent of the amount you pay goes to the glass, which in itself is not a small amount. On the other hand, car glass is one of the parts whose price and quality are less discussed. However, you should bear in mind that car glass is one of the most important parts of a car that is used as insulation against sound, wind, and rain. Suppose your car is parked in the open and it is raining. What would happen if there was no glass?
In the following article, we asked a few questions from an expert in the glass industry; questions that were usually on the minds of our dear users, then we provided additional explanations so that you can fully understand the concept of automotive glass.
Automotive Glass
In the following article, we asked a few questions from an expert in the glass industry; questions that were usually on the minds of our dear users, then we provided additional explanations so that you can fully understand the concept of automotive glass.
What are the differences between the technology of car windshield and side and rear windows:
The windshield of today’s cars is made of laminated glass. This type of glass includes a layer of the plastic film called PVB, adhered to two layers of glass, but in the side and rear windows, the glass, commonly known as toughened, after forming and cutting, is heated to a temperature of about 700 to 600˚C, and then cooled down quickly. This process results in the strength of the glass surface.
Why should we use laminated glass:
These glasses are much safer than ordinary glasses because ordinary glasses normally break into large and sharp shards, which can pose a threat to human life and lead to great financial loss for the person involved in the accident. It should be noted that compared to ordinary glass, tempered glass has a better condition. These glasses shatter into small, blunt pieces which do not pose any danger to the lives of the people. However, tempered glass also collapses, therefore scientists have attempted and conducted a large body of research to solve these issues which led way to the production of laminated glass. In the lamination process, two or more layers of glass are placed between the polymer layers, and the whole set is permanently integrated under pressure and heat. The most important characteristic of laminated glass is its breaking pattern. Although the glass may break, the broken pieces stick to the inner layer and the glass maintains its integrity.
What are the differences between these glasses in terms of safety:
In P.V.B. windshields, when an external force is applied, it holds the shards in place and prevents them from scattering and injuring the occupants or throwing them out of the vehicle. Other properties include reduced high-frequency sound transmission, reduction of UV transmittance up to 95%, and the possibility of repairing in case the glass cracks. Having the same features, the rear and side windows also break into small pieces without losing integrity and producing sharp edges and therefore do not harm the occupants. It should be noted that the P.V.B layer is sometimes also used in the rear window to increase safety.
There is a series of black lines on the rear windows, the philosophy of using them is:
The rear window lines act as heaters and prevent the glass from freezing. They also eliminate water, dew, and dust and as a result improve the cleanliness.
The top of some of the glasses is stained. This color is used to prevent any possible damage to the driver.
In order to prevent the sunlight from reflecting on the driver’s face and eyes and bothering them, the upper part of the P.V.B. is colored.
In the production process of all car windows, production parameters such as temperature and pressure and other settings must be optimal in such a way that while ensuring product safety, according to standard requirements, its shape, form, and curvature are accurate and in accordance with the car body, so that no waves or non-standard distortions are observed on the surface.
Nowadays, the use of dark glass and clear glasses that block the passage of sunlight into the car, known as solar glass, is increasing in the automotive industry. The use of solar glass causes better temperature comfort inside the car and the car will spend less power on the ventilation and cooling system.
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