Windshields are made of laminated safety glass, a type of glass that is made up of a piece of plastic sandwiched between two layers of glass. The three layers are sealed together and air pockets are removed by rollers or vacuum systems. This type of glass is designed to reduce the likelihood of injury, should it break. Laminated glass is created by bonding several layers of glass together under pressure and heat, with a resin called polyvinyl butyral (PVB).
This “tempering process” makes glass many times stronger than untempered glass of the same thickness. When a small object hits a piece of safety glass, usually only the outer layer of the windshield that is hit breaks. Tempered glass can also be treated with chemicals and heat treatments; these treatments help give the piece of glass more balanced internal stress capabilities. Although laminated glass is widely used in the automotive industry, it has a wide range of applications and can work well in any situation where there is a potential for impact by a person.
The tempered glass of the final product is more difficult to break. Tempered glass is most commonly used in passenger windows of cars, while laminated glass forms the front and rear windshields most of the time. Rear glass, also called rear window glass, rear windshield, or rear glass, is the piece of glass opposite a vehicle's windshield and is made of tempered glass. When tempered glass breaks, it is designed to break into small pieces that are less likely to cause additional injury or damage.
Windshields are manufactured from a lamination process and are designed to offer the highest levels of safety in the event of an accident. Different types of glass are used throughout the vehicle because each type of glass has a different purpose. The second type of aftermarket automotive glass comes from the OEM, but was created on a different production line. So what type of glass is used in car windows? Most glass used in cars is tempered.
Glass, in this case, is used to refer to the side windows, the deflector glass, the ventilation glass and the glazed roof (if the car has one). However, the most important glass in any vehicle is the windshield, and it is made of laminated glass.