Donald Trump, the Republican candidate for the White House, appeared before his supporters protected by bulletproof glass, after the July 13 attack in Butler, Pennsylvania. The Secret Service had recommended avoiding outdoor gatherings, but the tycoon chose to appear on stage in Asheboro, North Carolina, surrounded by a large array of snipers and bulletproof glass panels.
But what do we mean when we talk about bulletproof glass and what processes allow us to obtain this material?
A definition
Bulletproof glass is a transparent material that provides protection against gunshots by preventing the penetration of the bullet. More specifically, it is a particular type of laminated glass, whose level of protection depends on the quantity and thickness of the sheets used, and on the number of plastic sheets used in the lamination. The resistance of bulletproof glass is tested through specific ballistic tests, regulated by the European standard UNI EN 1063, to verify the ability to absorb and distribute the energy of the projectile.
How is bulletproof glass made?
Bulletproof glass is obtained through a complex process that involves the use of advanced materials and manufacturing technologies. stratified. The glass layers are alternated with elastomers, polycarbonate, polyurethane or polyvinyl butyral. Thanks to these sheets of plastic material, bulletproof glass acquires characteristics that are fundamental to its function, such as elasticity and tensile strength, while maintaining optical transparency.
The ability of bulletproof glass to resist impacts is further increased by heat treatment processes, like temper.
Applications
Ballistic protection is not the only advantage offered by bulletproof glass. Its energy-absorbing properties make it the ideal ally to resist impacts from axes, hammers or other tools. This material also guarantees long-lasting durability and acts as an insurmountable barrier against weathering. For these reasons, bulletproof glass finds application in numerous contexts where safety is the primary requirement:
- armored vehicles,
- government and diplomatic buildings,
- airports and stations,
- banks and jewelers.
Whether protecting people, property or buildings, bulletproof glass plays a crucial role in high-risk situations or contexts, providing an invisible yet impenetrable barrier against ballistic threats.
Sources: vetreriagbm.it, wikipedia.org
