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Thursday, April 10, 2014

Architectural glass

By Kolja Klok   Posted at  1:19 AM   Staten Island No comments

Architectural glass can be found in car windshields, bank teller protective barriers, and a variety of other places where shatterproof glass is a necessity.
There are conflicting reports on whether immediately realized the potential of his discovery or whether it took him reading about several automobile accidents where people were seriously injured due to their windshields shattering, sending shards of glass flying everywhere.
The resulting safety glass was made shatter proof using much the same method as how his flask had accidentally become shatter-proof.  Specifically, he made his safety glass by bonding a layer of celluloid between two layers of glass.  While his safety glass wasn’t immediately adopted by automobile manufacturers, it did become very popular during, being used in eye pieces of gas masks.
Besides the obvious benefits to using shatterproof glass in skyscraper windows, laminate safety glass also has a much higher probability of the entire window pane staying in its frame during an earth quake over something like tempered glass, as the building sways and bounces.
While laminated glass is used in the windshields of cars, tempered safety glass is typically what is used in side and rear windows in automobiles.  The reason for this is primarily because laminated glass is difficult to cut through, making it hard for safety crews to get to injured passengers within cars.  They have no such trouble with tempered safety glass.  Tempered glass can also be shattered into those tiny glass pebbles in the case of being trapped in a car, such as if it becomes submersed.  It would be significantly more difficult to get out of a car through a window in such a situation, if it were laminated glass in the side and rear windows.
Many types of eye-wear also use tempered safety glass.  The glass here is often tempered using a chemical process, rather than heat.
You’ll typically find tempered glass in computer monitors, skylights, refrigerator shelves, oven doors, storm doors, etc.
Polyvinyl butyral is extremely flexible/stretchable and is also quite strong.  It also makes for crystal clear safety glass.  This is particularly important in applications like car windshields as it makes for clear visibility and helps keep a person from being ejected from the car through the windshield, which significantly increases their chances of surviving a crash if they weren’t wearing their seat belt.
The most popular modern process of creating laminated safety glass is to take two layers of annealed glass and place a layer of polyvinyl butyral between them.  The glass is then run through a series of rollers which are designed to expel any air pockets in between the layers.

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