LAMINATED GLASS PROPERTIES & MANUFACTURING PROCESS

In 1909, a French chemist Edouard Benedictus, invented laminated glass and called it “Triplex”. The process bonds two sheets of glass using a sheet of transparent plastic, producing a safety glass. If the glass is broken by an impact, the plastic retains the fragments. The process is used for automobile windshields but can be also applied for laminated sidelites and laminated backlites.

Applications Mandatory for Windshields and available for the rest of the car.

Features If struck or impacted, the glass cracks in the shape of a spider’s web.

The interlayer PVB holds the glass fragments together.

Here are some features of laminated glass :

Security : This is the biggest reason why people want to install laminated glass. It is simply harder to break and therefore more secure.

Safety : In the event that a child in your home throws something that hits your window, it is less likely to break. Therefore, the child is safer.

Sound reduction : Laminated glass does not allow as much sound to get through as does regular glass, meaning your home will be quieter because there will be fewer outside sounds getting through.

Protection from adverse weather conditions : People who live in areas that are prone to hurricanes or tornado can rest assured that the security glass will be less susceptible to wind and hail.

Durability : Security glass windows will need to be replaced less often than regular glass windows. It simply lasts longer.

Type of glass Clear, tinted, deep tinted and coated glass

Spectral data See table below for average values given for a glass configuration of 2.1 mm (outer pane) // 2.1 mm (inner pane). Tolerances depend on production and measurement methods.

Material properties:

Hardness 470 HK

Index of refraction 1.52

Temperature resistance At least 96 Hours at 90°C

Properties	Annealed	Tempered	Laminated
Alteration	Possible	Not possible	Possible
Risk of Injury	High	Low	Low
Impact Resistance	Low	High	Low
Optical Distortion	Low	High	Low
Environment Control	No	No	Yes, protects from UV rays
Acoustic Insulation	No	No	Yes
Heat Insulation	No	Yes with reflective coating	Yes with reflective coating

The manufacturing process for laminated glass:

Automotive windows are usually made from laminated glass for windshields and tempered glass for sidelites and backlites. Laminated glazing can also be used for sidelites and backlites, mainly to improve safety and security.

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