In modern architecture, tempered glass is the most commonly used material for glass doors, but for higher safety, "tempered laminated glass" is usually employed.
Feature: Through heat treatment process, the strength of the glass is 3 to 5 times that of ordinary glass. Its most prominent feature is safety - when it is subjected to a violent impact and breaks, it shatters into countless tiny, obtuse particles, greatly reducing the harm of sharp glass fragments to the human body.
Advantages: High strength, resistant to impact and bending; Good thermal stability (able to withstand a temperature difference of approximately 250 degrees); High safety (it shatters into small, obtuse, honeycomb-like particles).
Disadvantage: Once broken, the entire piece of glass will disintegrate, losing its integrity and failing to serve the purpose of isolation and protection.
Application: Widely used in indoor and outdoor doors and Windows, shower rooms, partitions, etc. It is the most fundamental and commonly used type of safety glass for glass doors.
Features: It is composed of two or more pieces of glass, with one or more layers of organic polymer interlayer (usually PVB) in between. Through high-temperature and high-pressure treatment, the glass and the interlayer are permanently bonded together.
Advantage: Extremely high security. Even if the glass breaks, the fragments will be stuck by the interlayer film and will not fall off to hurt people, maintaining the integrity of the glass and preventing people from falling or passing through after impact. At the same time, it can still play a certain role in sound insulation and heat insulation.
Disadvantage: The cost is relatively high; It is heavier.
Application: In situations with extremely high safety requirements, such as ceilings, skylights, display Windows, bank counters, explosion-proof glass, etc.
Why is "tempered laminated glass" commonly used for glass doors?
For glass doors, especially those in public areas with high foot traffic (such as the entrances of shopping malls, office buildings, and hotels) or on balconies and shower doors at home, although using tempered glass alone is safe, there are still potential risks (for instance, a whole piece of glass may fall and cause scratches or lose its protective function).
Therefore, "tempered laminated glass", which combines the advantages of both, has become the highest standard and the most recommended choice
Production method: Interlayer two pieces of tempered glass.
Double security guarantee
The first layer (tempering property) : Extremely high strength and not easy to break.
The second layer (interlayer feature) : Even if both tempered glass pieces are broken due to a huge impact, all the fragments will be firmly adhered to the PVB film in the middle, forming a "net" that will not fall off, maintaining the overall framework of the door leaf, effectively preventing people from penetrating and falling, and protecting the on-site personnel from being injured by the rain of fragments.
Indoor bathroom/shower door: You can choose either single-pane tempered glass (framed structure is safer) or tempered laminated glass (laminated glass must be used for frameless structure).
For balcony doors and courtyard entrance doors: Tempered laminated glass is strongly recommended. Because it can not only resist wind and pressure, but more importantly, it can prevent the risk of people falling after the glass breaks due to accidents (such as strong wind shaking or object impact).
Entrance doors of commercial premises: Tempered laminated glass must be used, which is a mandatory requirement of building codes and safety standards.
