Glass - Types of Glass
1. Types of Glass

As the vehicle collision performance improves, requirements are increased for automobile glass as well; better visibility, improved safety from external impact, isolation of noise from the passenger compartment, and enhanced appearance.


Tempered Glass:

This glass is a specially processed with a high strength by heating a glass to the softening temperature about 1,202 °F (650 °C) and then evenly and quickly air-cooling the surface. Another characteristic is that it instantaneously shatters into tiny pieces when broken.


Partially Tempered Glass:

A type of tempered glass. It was designed to improve the visibility problems created when normal tempered glass breaks.
By reducing the level of tempering, cracking of the glass is reduced and the driver can maintain his/her visibility.


Laminated Glass:

Two glass panes are compressed together with a transparent, high adhesive film resin in between. As a result, even if the glass is impacted and broken by an external force, it does not separate into sharp pieces. It is most commonly used for windshields.

In body repair, if the body is straightened with the glass in position, the glass may break.

Other Special Types of Glasses:
Types of Glass
Characteristics
Main Use
Heater printed glass
Electric conducive powders are printed in the shape of a hot wire on the surface of glasses before heat treatment.
Windshield
and rear window
Heat absorption
(colored) glass
A small amount of metal such as cobalt or iron is mixed in a normal glass to color it so that it can absorb infrared rays (heat rays).
All
Partially shaded glass
Only upper part of a glass is colored to reduce transillumination rate. The color becomes darker as it goes to the upper part and thinner as it does down to the lower part.
Windshield
Antenna-buried glass
Antenna line for receiving radio transmission is buried in the middle layer of the laminated glass or the line is printed on the glass surface. There is also a type that has both a buried wire and printed wire.
Rear window and
side windows