Bulletproof glass can absorb large amounts of impact momentum, thus preventing the bullet or bullet fragments from penetrating.
Their form is no different from other glass panes, but they provide protection against criminal acts. Transparency and aesthetic neutrality can of course be ensured, but the great thickness gives a green tint.
The bulletproof glass panes ensure excellent protection from ultraviolet radiation (UV).
Depending on the levels of protection, Bulletproof Glass Panels are divided into the following categories:
Bulletproof Series 300 – Bullet Resistance
SECURITY LEVEL:
High protection against the use of weapons
The combination of multiple layers of glass with interleaved, energy-absorbing membranes creates effective bulletproof resistance.
For this reason, a range of bulletproof multi-pane glasses of different thickness and composition is available, depending on the desired degree of protection, which is determined by a number of parameters such as the type of weapon and its caliber, the type of ammunition, the firing distance and the number of hits, so that no tiny fragments are thrown on the back of the glass.
Similar to the above is the classification of bulletproof glasses into nine different categories. The standards currently in force in European countries are for bulletproof glass panes the EN 1063 standard. A table of characteristics of bullet-proof glazing as classified according to their performance in the tests is given.
APPLICATIONS:
Personnel protection curtains, banks, post offices, embassies, offices, gas stations, cash registers, windows in airports, prisons, police stations and other security institutions, gold shops, etc.
BULLETPROOF 300 SERIES
PROTECTION LEVEL WEAPON TYPE DIAMETER TYPE OF ARMAMENT PROJECTILE MASS (m) SHOT DISTANCE (m) PROJECTILE SPEED (m/s) NUMBER OF BULLETS SHOT DISTANCE (mm)
BR1 rifle 0.22 Long rifle L/RN 2.6 +- 0.1 10.00 +- 0.5 360 +- 10 3 120 +-10
BR2 pistol 9mm Luger FJ1/RN/SC 8.0 +- 01 5.00 +- 0.5 400 +- 10 3 120 +-10
BR3 Pistol .357 Magnum FJ1/CB/SC 10.2 +- 0.1 5.00 +- 0.5 430 +- 10 3 120 +-10
BR4 pistol 0.44 Rem.Magnum FJ2/FN/SC 15.6 +- 0.1 5.00 +- 0.5 440 +- 10 3 120 +-10
BR5 rifle 5.56 X 45* FJ2/PB/SC/P1 4.0 +- 0.1 10.00 +- 0.5 950 +- 10 3 120 +-10
BR6 rifle 7.62 X 51* FJ1/PB/SC 9.5 +- 0.1 10.00 +- 0.5 830 +- 10 3 120 +-10
BR7 rifle 7.62 X 51* FJ2/PB/HC1 9.8 +- 0.1 10.00 +- 0.5 820 +- 10 3 120 +-10
SG1 Shotgun Cal 12/70 Solid lead3 31.0 +- 0.5 10.00 +- 0.5
PB : Point bullet
3 : Brenneke slug RN : Round nose bullet
L : Lead bullet SC : Soft core (with lead)
CB : Coned – cast bullet SCP1: Soft core (with lead) and steel penetrator (type SS109)
FJ1: Full jacketad bullet, steel
Bulletproof Series 400 – High Security
PROTECTION LEVEL:
The explosions create shock waves, the strength of which is proportional to the amount of explosive material.
Either the solution of a glass that will not break from the explosion, or the solution of a glass that will break, but will remain in place, can be chosen. In the second case, the thrust energy is transferred to the bearing structure, which should be able to withstand and the way of fixing the glass should be strong enough.
In any case, the driving force behind blast-resistant glazing is human safety given the rise in terrorist acts.
According to the European standard EN 13541, four levels of explosion-resistant glazing are proposed: ER1 to ER4.
APPLICATIONS:
Airports, military installations, pharmaceutical or chemical industries, banks, embassies, etc.
RESISTANCE TO MAXIMUM PRESSURE CATEGORY OF THE REFLECTED SHOCK WAVE IN BAR TIME OF PRESSURE AFTER THE EXPLOSION IN MILLISECONDS INDICATIVE CRYSTAL THICKNESS CRYSTAL WEIGHT (kg/m2)
ER 1 0,5 – 1,0 >20 10 23
ER 2 1,0 – 1,5 >20 26 60
ER 3 1,5 -2,0 >20 31 73
ER 4 2,2 – 2,5 >20 64 130