What is the use of laminated glass
Today, the phrase “laminated glass” is often heard among construction workers, engineers, architects, etc. The use of laminated glass in building facades has significantly increased safety and reduced injury to people after glass breakage. In this note, we try to get acquainted with the structure of laminate, its features and applications in the construction industry
The structure of laminated glass, commonly known as Laminated Glass, typically consists of two layers of glass and an interlayer. The strong bond formed between the glass layers and the interlayer during the lamination process, under heat and pressure, is the key factor behind the effective performance of this product after breakage. In cases where monolithic glass, either annealed or tempered, is used, the glass shatters and collapses upon breakage, posing a high risk of injury. In contrast, if any of the glass layers in laminated glass breaks, the fragments remain adhered to the interlayer, preventing sharp glass pieces from falling.
Laminated glass can be manufactured in different thicknesses and with multiple layers. By using various types of glass, such as low-emissivity (Low-E) glass, and different interlayers, the laminated structure can achieve special qualities and performance. The most common interlayer in laminated glass processing is polyvinyl butyral (PVB), which is widely used in architectural glass. There are also different types of films with specific properties, such as acoustic PVB, thermoplastic films like TPU and EVA, as well as structural interlayers known as SentryGlas (SGP). Besides enhancing safety, polymer interlayers can significantly reduce UV transmission, improve sound insulation, and increase impact resistance.
Laminated glass is extensively used in the construction of windows, building façades—especially in high-rise buildings—curtain walls, glass partitions, staircases, canopies, bridges, skylights, railings, balustrades, and more.
Beyond its applications in architectural and automotive glazing, laminated glass has also become important in security applications. For example, in banks, currency exchanges, galleries, jewelry stores, and any location exposed to risks of intrusion, impact, or even explosions, laminated glass is used. This type of glass, known as Security Glass/Glazing, usually consists of multiple layers of glass and interlayers, providing resistance against impact and external forces to ensure safety and security.
To achieve the most efficient laminated glass structure, factors such as the building’s geographical location (for assessing forces such as wind load), the installation site of the glass panels, the level of noise pollution, and other relevant conditions should always be taken into account.
