Safety glass is made by treating a glass especially so that it does not break easily. Even if a safety glass shatters, it remains safe. The safety glass has been made because of the growing need of security at various places like automobiles, for cooking, law enforcement, etc. It has been in use since 1927, when it was used as windshields in automobiles. Safety glass is also used in industrial work and for construction.
There are two kinds of safety glass, viz. tempered.
· Tempered Glass
This kind of glass is made by a process known as tempering. The glass is made many times harder by heating it and immediately cooling it off. When this process is repeated several times, the molecular structure of the glass is altered and the glass becomes harder. The process of tempering is also used to make the glass more brittle. This is done so that the entire shatters all at once if the external force applied on it is powerful enough.
One of the most important characteristic features of tempered is that it does not break into sharp or jagged pieces when it shatters. The tempered glass breaks into pieces that resemble cubes or stones. The broken pieces of tempered are not heavy enough to cut the skin.
The tempered is used in the windows of cars. Being heat resistant, is used in coffee makers, ovens and even as computer screens.click to read more iş gözlüğü
· Laminated Glass
It's made by putting a layer of PVB or Polyvinyl Butyral between two sheets of glasses. The layer of PVB is very flexible and strong and holds the two sheets of glass on either side.
Laminated glass is used in the windshields of cars. It is used as a security in the car. If the glass breaks due to external pressure, the broken shards do not fly around. The central layer of PVB holds the glass and prevents the shattered piece from breaking away from it. This layer of PVB is a kind of plastic layer that is known for its flexibility. So, even when the pressure breaks the glass, the plastic remains unaffected. Cracks might appear on the glass but it does not break completely.
Laminated is a more preferred choice than tempered because it gives more security. As a security, is used extensively in prisons and jewelry shops. Penetrating through laminated is very difficult. It is also sound resistant and blocks ultra violet radiations.
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