Laminated glass is a type of safety glass that consists of two or more layers of glass with PVB (polyvinyl butyrate) talc layers formed during a combined process of pressure and temperature. Talaq PVB with different thicknesses, the most practical of which are 0.38 mm, 0.76 mm and 1.52 mm, is used to make all kinds of laminated glass. The number of layers of laminated glass is determined by their type of application.
The presence of PVB talc between two layers of glass makes the glass not fall after breaking and the broken glass particles are kept sticky to the talc and are prevented from being separated and spread in the environment, that is why the use of laminated glass In high-rise buildings, it is very effective in preventing risks caused by natural disasters such as earthquakes and fires, which cause the collapse of normal and tempered glass.
Also, one of the advantages of laminated glass is that you can use several types of glass simultaneously in its different layers and increase the efficiency of the glass.
The superiority of laminated glass
In the lamination process, two or more layers of glass are placed between polymer layers and the whole set is permanently integrated under pressure and heat.
The most important characteristic of laminated glasses is their fracture pattern. Glass breaks on impact, but the broken pieces stick to the interlayer and the glass maintains its integrity.
Laminated glass has a higher safety factor than normal glass.
Ordinary glass is broken into large and sharp pieces in the impact, which can lead to huge human and financial losses.
Tempered glass is better than normal glass. As a result of failure, these glasses are broken into small and unbreakable pieces that do not pose any danger to life, but the glass collapses anyway. The philosophy behind the emergence of laminated glass was to solve this problem of glass.
Laminated glass mechanism
The glass sheets used to make laminated glass can be normal glass, tempered glass, colored glass, flute glass, etc.
For double-layer laminated glass, it is the usual thickness of the glass sheets. These glasses have good transparency and their impact resistance is several times higher than ordinary glasses. Therefore, they are used in making security glasses.
Due to the very high adhesion properties of PVB, the broken parts remain on the PVB layer and do not fall due to the fracture. PVB absorbs a large amount of impact energy and quickly disperses it on its surface.
In this way, the safety of people inside and outside the building is maintained. Sound insulation is one of the important factors for evaluating modern residential buildings.
Laminated glass with interlayer PVB is able to prevent sound waves and maintain a quiet and comfortable environment. The special function of these glasses is to pass the UV rays of the sun.
This middle layer, which is mostly made of laminated glass, has the ability to prevent its pieces from collapsing when the laminated glass is broken and prevents the pieces from sticking together and not being thrown around.
In residential houses, due to UV rays passing through the glass, expensive objects such as carpets, furniture, art paintings become pale over time. High-performance laminated glass blocks the passage of about 99% of UV rays. This is while they pass the most visible light.
Application of laminated glass
This glass is considered a type of security glass due to its high resistance, and in addition to its use in residential buildings (which are used as a kind of sound insulation and material for visibility outside the building) in other places, including the airport. It is used in office and commercial places, chain stores, showcases of exchanges and gold shops and other places and also as a decorative floor in buildings.
Unbreakable glass is also used as car glass because due to the elasticity of the glass, the amount of damage caused by breaking it during an accident is reduced and it provides the safety of the driver. In addition, this type of glass is used as bulletproof glass and soundproof glass in security places.
Features of laminated glass
For this reason, the use of laminated glass in high-rise buildings can be very vital in preventing possible risks such as fire and earthquake. The use of several types of glass in different layers is another important advantage of laminated glass, which increases the efficiency of this type of laminated glass.
In addition to increasing the safety of this type of glass, we can also mention that they are insulated against sound. Considering the importance of noise pollution in big cities, solving this issue can also be very interesting for people who have a hand in the architecture industry.
Also, the coating used in this product controls ultraviolet rays. In the produced laminated glass, by increasing the thickness of the middle layer, the insulation level of these glasses against ultraviolet rays increases, which plays a significant role in maintaining the health of people inside the house and prevents the gradual reduction of the color of carpets and furniture by sunlight. .