Laminated protective glass (it is also armored glass, bulletproof, bulletproof, bulletproof, shockproof, impact-resistant, burglary-resistant, penetration-resistant), is made on the basis of triplex safety glass and serves to protect personnel and customers of banking (credit) institutions, increasing the safety of building structures with glass, improves comfort in service areas.
Armored glass is used to protect:
- places for issuing money at the cash desks of large organizations, enterprises, institutions;
- currency exchange points;
- workplaces of bank tellers working in operating rooms;
- operator workplaces petrol stations;
- internal security posts in banks, jewelry stores, shooting galleries;
- workplaces of employees of the duty units of the internal affairs bodies.
The strength of glass is determined by the number of layers of glass and polymer in a triplex, as well as the thickness of each layer of glass and polymer that glues the glass.
Table No. 1 of the correspondence between glass thickness and safety class:
| Glass name according to GOST 30826-2014 | Protection class according to GOST 30826-2014 | Weight (kg/m2) | Deviation geometric dimensions according to GOST 30826-2001 | Number and validity period of the certificate | Triplex scheme | Selling price per sq. m. (excluding packaging), in rubles | ||||||||||||
| Thickness with deviations, mm | Length and width, mm/m | Layer displacement, mm | ||||||||||||||||
| CM1 | 15 | 6±1 | ±1 | ±1 | 024442 until 07/26/2021 | 3 | 0,38 | 3 | $1,750.00 | |||||||||
| Protective laminated glass, safe to use | CM1 | 15 | 6±1 | ±1 | ±1 | 024442 until 07/26/2021 | 3 | 0,76 | 3 | $2,350.00 | ||||||||
| Protective laminated glass, safe to use | CM2 | 20 | 8±1 | ±1 | ±1 | 024442 until 07/26/2021 | 4 | 0,38 | 4 | $1,850.00 | ||||||||
| Protective laminated glass, safe to use | CM2 | 20 | 8±1 | ±1 | ±1 | 024442 until 07/26/2021 | 4 | 0,76 | 4 | $2,450.00 | ||||||||
| Protective laminated glass, safe to use | CM3 | 20 | 8±1 | ±1 | ±1 | 024442 until 07/26/2021 | 4 | 0,38 | 4 | $1,850.00 | ||||||||
| Protective laminated glass, safe to use | CM3 | 20 | 8±1 | ±1 | ±1 | 024442 until 07/26/2021 | 4 | 0,76 | 4 | $2,450.00 | ||||||||
| Protective laminated glass, safe to use | CM3 | 25 | 10±1 | ±1 | ±1 | 024442 until 07/26/2021 | 5 | 0,38 | 5 | $2,150.00 | ||||||||
| Protective laminated glass, safe to use | CM3 | 25 | 10±1 | ±1 | ±1 | 024442 until 07/26/2021 | 5 | 0,76 | 5 | $2,750.00 | ||||||||
| Protective laminated glass, safe to use | CM3 | 30 | 12±1 | ±1 | ±1 | 024442 until 07/26/2021 | 6 | 0,38 | 6 | $2,500.00 | ||||||||
| Protective laminated glass, safe to use | CM4 | 20 | 8±1 | ±1 | ±1 | 024442 until 07/26/2021 | 4 | 0,76 | 4 | $2,450.00 | ||||||||
| Protective laminated glass, safe to use | CM4 | 20 | 9±1 | ±1 | ±1 | 024442 until 07/26/2021 | 4 | 1,14 | 4 | $3,050.00 | ||||||||
| Protective laminated glass, safe to use | CM4 | 20 | 9±1 | ±1 | ±2 | 024442 until 07/26/2021 | 4 | 1,52 | 4 | $3,700.00 | ||||||||
| Protective laminated glass, safe to use | CM4 | 25 | 11±1 | ±1 | ±1 | 024442 until 07/26/2021 | 5 | 0,76 | 5 | $2,750.00 | ||||||||
| Protective laminated glass, safe to use | CM4 | 25 | 11±1 | ±1 | ±1 | 024442 until 07/26/2021 | 5 | 1,14 | 5 | $3,350.00 | ||||||||
| Protective laminated glass, safe to use | CM4 | 30 | 12±1 | ±1 | ±1 | 024442 until 07/26/2021 | 6 | 0,76 | 6 | $3,100.00 | ||||||||
| Protective laminated glass, safe to use | CM4 | 30 | 13±1 | ±1 | ±1 | 024442 until 07/26/2021 | 6 | 1,14 | 6 | $3,700.00 | ||||||||
| Protective laminated glass, safe to use | CM4 | 30 | 13±1 | ±1 | ±2 | 024442 until 07/26/2021 | 6 | 1,52 | 6 | $4,350.00 | ||||||||
| P1A | 20 | 8±1 | ±1 | ±1 | 024443 until 07/26/2021 | 4 | 0,38 | 4 | $1,850.00 | |||||||||
| Safety impact resistant laminated glass | P1A | 25 | 11±1 | ±1 | ±1 | 024443 until 07/26/2021 | 5 | 0,38 | 5 | $2,150.00 | ||||||||
| Safety impact resistant laminated glass | P1A | 30 | 12±1 | ±1 | ±1 | 024443 until 07/26/2021 | 6 | 0,38 | 6 | $2,500.00 | ||||||||
| Safety impact resistant laminated glass | R2A | 20 | 8±1 | ±1 | ±1 | 024443 until 07/26/2021 | 4 | 0,76 | 4 | $2,450.00 | ||||||||
| Safety impact resistant laminated glass | R2A | 25 | 10±1 | ±1 | ±1 | 024443 until 07/26/2021 | 5 | 0,76 | 5 | $2,750.00 | ||||||||
| Safety impact resistant laminated glass | R2A | 30 | 12±1 | ±1 | ±1 | 024443 until 07/26/2021 | 6 | 0,76 | 6 | $3,100.00 | ||||||||
| Safety impact resistant laminated glass | R3A | 20 | 9±1 | ±1 | ±1 | 024443 until 07/26/2021 | 4 | 1,14 | 4 | $3,050.00 | ||||||||
| Safety impact resistant laminated glass | R3A | 25 | 11±1 | ±1 | ±1 | 024443 until 07/26/2021 | 5 | 1,14 | 5 | $3,350.00 | ||||||||
| Safety impact resistant laminated glass | R3A | 30 | 13±1 | ±1 | ±1 | 024443 until 07/26/2021 | 6 | 1,14 | 6 | $3,700.00 | ||||||||
| Safety impact resistant laminated glass | R3A | 40 | 17±1 | ±1 | ±1 | 024443 until 07/26/2021 | 8 | 1,14 | 8 | $4,500.00 | ||||||||
| Safety impact resistant laminated glass | R4A | 20 | 9±1 | ±1 | ±1 | 024443 until 07/26/2021 | 4 | 1,52 | 4 | $3,700.00 | ||||||||
| Safety impact resistant laminated glass | R4A | 25 | 11±1 | ±1 | ±2 | 024443 until 07/26/2021 | 5 | 1,52 | 5 | $4,050.00 | ||||||||
| Safety impact resistant laminated glass | R4A | 30 | 13±1 | ±1 | ±2 | 024443 until 07/26/2021 | 6 | 1,52 | 6 | $4,350.00 | ||||||||
| Safety impact resistant laminated glass | R4A | 40 | 17±1 | ±1 | ±2 | 024443 until 07/26/2021 | 8 | 1,52 | 8 | $5,200.00 | ||||||||
| Safety impact resistant laminated glass | R4A | 50 | 21±1 | ±1 | ±2 | 024443 until 07/26/2021 | 10 | 1,52 | 10 | $5,750.00 | ||||||||
| Safety impact resistant laminated glass | P5A | 60 | 27±1 | ±2 | ±2 | 024443 until 07/26/2021 | 8 | 1,52 | 8 | 1,52 | 8 | $9,000.00 | ||||||
| Safety impact resistant laminated glass | P5A | 75 | 33±2 | ±2 | ±2 | 024443 until 07/26/2021 | 10 | 1,52 | 10 | 1,52 | 10 | $9,850.00 | ||||||
| R6B | 35 | 17±1 | ±2 | ±2 | 024441 until 07/26/2021 | 4 | 1,52 | 6 | 1,52 | 4 | $7,100.00 | |||||||
| Security burglar-resistant laminated glass | R6B | 45 | 21±1 | ±2 | ±2 | 024441 until 07/26/2021 | 5 | 1,52 | 8 | 1,52 | 5 | $7,850.00 | ||||||
| Security burglar-resistant laminated glass | R7B | 45 | 20±1 | ±2 | ±2 | 024441 until 07/26/2021 | 6 | 1,52 | 8 | 0,76 | 4 | RUB 6,600.00 | ||||||
| Security burglar-resistant laminated glass | R7B | 52,5 | 23±1 | ±3 | ±2.5 | 024441 until 07/26/2021 | 4 | 0,76 | 8 | 0,76 | 5 | 0,76 | 4 | $6,950.00 | ||||
| Security burglar-resistant laminated glass | R8B | 45 | 22±1 | ±3 | ±2.5 | 024441 until 07/26/2021 | 4 | 1,52 | 4 | 1,52 | 4 | 1,52 | 6 | $10,200.00 | ||||
| Security burglar-resistant laminated glass | R8B | 62,5 | 28±1 | ±3 | ±2.5 | 024441 until 07/26/2021 | 4 | 0,76 | 6 | 0,76 | 5 | 0,76 | 6 | 0,76 | 4 | $8,650.00 | ||
| Br1 | 50 | 20.9±1 | ±3 | ±2.5 | 024447 until 07/26/2021 | 8 | 1,52 | 6 | 1,52 | 6 | $8,150.00 | |||||||
| Safety bulletproof laminated glass | Br2 | 65 | 28±1 | ±3 | ±2.5 | 024447 until 07/26/2021 | 8 | 0,76 | 6 | 0,76 | 6 | 1,14 | 6 | $8,350.00 | ||||
| Safety bulletproof laminated glass | Br3 | 100 | 42.8±2 | ±5 | ±3 | 024447 until 07/26/2021 | 8 | 1,14 | 6 | 0,76 | 6 | 1,14 | 6 | 0,76 | 6 | 1,14 | 8 | $14,200.00 |
| Safety bulletproof laminated glass | Br4 | 125 | 55±2 | ±5 | ±3 | 024447 until 07/26/2021 | 10 | 1,14 | 8 | 1,14 | 8 | 1,14 | 8 | 1,14 | 8 | 1,14 | 8 | $17,350.00 |
Extra charge for large items
| Weight from 80 to 120 kg | +20% |
| Weight from 121 to 160 kg | +40% |
| Weight from 161 to 200 kg | +60% |
| Weight from 200 to 350 kg | +100% |
| Over 350 kg | Calculated individually |
The minimum cost of one product is 1,000.00 rubles.
Packing cost for transport company(box) 700 rub/m2, but not less than 500 rub.
Cost of carton packaging 150 rub/m2.
The main function of any type of protective glass is to exclude the penetration of a destructive object behind the protective glass. It should be understood that at the first impact of a destructive object on the protective glass, it leads to its damage (scratches, chips, cracks). But at the same time, the destructive object remains on the side of damage.
The strength of the glass before the appearance of damage is provided by heat strengthening (tempering).
As a result of hardening, strength increases (the fracture threshold is 7-10 times relative to green glass), but the viscosity of the glass is lost, which leads to its complete physical destruction after exceeding the fracture threshold.
. bulletproof glass, protection classes Br1, Br2, Br3, Br4, (old designation 1, 2, 3, 4, or B1, B2, B3, B4,);
. glass resistant to penetration (burglar-resistant), protection classes P6B, P7B, P8V (old designation B1, B2, B3);
. impact-resistant glass, protection classes R1A, R2A, R3A, (old designation A1, A2, A3);
. shock-resistant safety glass for construction, protection classes K4, CM1, CM2, CM3;
. building structures made of laminated glass (floors, steps, partitions, shower enclosures, etc.);
Protective laminated glass complies with the requirements of GOST 30826-2014 (old GOST R 51136-2008 and GOST 30826-2001).
Bulletproof glass
Depending on the protection classes, it must resist penetration by bullets when fired from a weapon in accordance with table No. 2. Such glass is produced using triplex laminated glass technology. The glass thickness depending on the protection class and the price per m2 is given in table No. 1.
Table number 2.
| Protection class | Name of the means of destruction | Weapon | Characteristics of the striking element | Firing distance, m | ||
| core type | Weight, g | Speed, m/s | ||||
| Special protection classes | ||||||
| C1 | 18.5 mm hunting cartridge | 12 gauge hunting rifle | Lead | 34.0±1.0 | 400±10 | 5±0.1 |
| Main protection classes | ||||||
| Br 1 | 9x18 mm pistol cartridge with Pst bullet, ind. 57-N-181S | 9mm APS, ind. 56-A-126 | Steel | 5,90 | 335±10 | 5±0.1 |
| Br 2 | 9x21 mm cartridge with P bullet, ind. 7Н28 | 9 mm SR-1, ind. 6P35 | Lead | 7,93 | 390±10 | 5±0.1 |
| Br 3 | 9x19 mm cartridge with Pst bullet, ind. 7Н21 | 9 mm PJ, ind. 6P35 | Steel heat-strengthened | 5,20 | 455±10 | 5±0.1 |
| Br 4 | 5.45x39 mm cartridge with PP bullet, ind. 7H10 | 5.45 mm AK74 assault rifle, ind. 6P20 | Steel heat-strengthened | 3,50 | 895±15 | 10±0.1 |
| Br 4 | 7.62x39 mm cartridge with PS bullet, ind. 57-N-231 | 7.62 mm AKM assault rifle, ind. 6P1 | Steel heat-strengthened | 7,90 | 720±15 | 10±0.1 |
| Br 5 | 7.62x54 mm cartridge with PP bullet, ind. 7H13 | Steel heat-strengthened | 9,40 | 830±15 | 10±0.1 | |
| 7.62x54 mm cartridge with bullet B-32, ind. 7-BZ-Z | 7.62 mm SVD rifle, ind. 6B1 | Steel heat-strengthened | 10,40 | 810±15 | 10±0.1 | |
| Br 6 | 12.7x108 mm cartridge with bullet B-32, ind. 57-BZ-542 | 12.7 mm OSV-96 rifle | Steel heat-strengthened | 48,20 | 830±20 | 50±0.5 |
| Note - The speed of the striking element is measured at a distance of (3.0 ± 0.1) m from the muzzle of the weapon. | ||||||
Puncture resistant glass
Penetration-resistant glass must withstand a certain number of impacts with a chopping tool with the characteristics indicated in table No. 3, depending on the protection classes. Such glass is produced using triplex laminated glass technology. The glass thickness depending on the protection class and the price per m2 is given in table No. 1.
Table #3
| Glass protection class | Hits with a hammer, ax butt | Ax blade strikes | Total number of strokes | ||
| Counter impact speed v 1 m/s, ±0.3 | impact energy E 1 , J, ±15 | Counter impact speed v 2 , m/s, ±0.3 | impact energy E 2 , J, ±15 | ||
| R6B | 12,5 | 350 | 11,0 | 300 | 30 to 50 |
| R7B | 12,5 | 350 | 11,0 | 300 | 51 to 70 |
| R8B | 12,5 | 350 | 11,0 | 300 | Over 71 |
Impact-resistant glass (thickness 5-9 mm)
Glass must withstand three impacts with the characteristics indicated in table No. 4, depending on the protection classes. Such glass is made by pasting with one or several layers of a special shockproof film. The glass thickness depending on the protection class and the price per m2 is given in table No. 1.
Table No. 4
| Glass protection class | Drop height, m | Impact energy, J (kgf m) |
| P1A | 3,5 | 141 (14,1) |
| R2A | 6,5 | 262 (26,2) |
| R3A | 9,5 | 382 (38,2) |
Shock-resistant safety glass for construction
Impact-resistant - safety glass for construction is assigned protection classes CM (impact with a soft body) and ST (impact with a solid body). SM glass must withstand, without through penetration, an impact by a soft body weighing 45 kg from a height indicated in Table No. 5, depending on the protection classes. ST glass must withstand, without through penetration, a blow with a solid body (pear) weighing 10 kg from a height indicated in Table No. 5, depending on the protection classes. Such glass is made using the technology of laminated glass triplex from tempered glass. The glass thickness depending on the protection class and the price per m2 is given in table No. 1.
Table number 5
| Glass protection class | impact body | Fall height, mm |
| CM1 | Soft | 300 |
| CM2 | 450 | |
| CM3 | 1200 | |
| ST1 | solid | 300 |
| ST2 | 450 | |
| ST3 | 1200 |
Protective laminated glasses are designed to protect human life, ensure the safety and reliability of storage and transportation of material values. Safety laminated glass is used for vehicles, in administrative, public and residential buildings, where there is a need to protect human life and material values.Examples.Bulletproof glass may be installed at any type of facility in case of a possible threat of an armed attack on personnel or visitors to these facilities. The class of protection is chosen based on the emerging criminogenic situation.
Bulletproof glass must be protected:
. places for issuing money at the cash desks of large organizations, enterprises, institutions;
. currency exchange points;
. workplaces of bank tellers working in operating rooms;
. workplaces of petrol station operators;
. internal security posts in banks, jewelry stores, shooting galleries;
. workplaces of employees of duty units of internal affairs bodies.In addition, bulletproof glass is installed on vehicles having armor protection. The protection class is selected in accordance with the requirements for the protection class to be set in normative documents for a specific vehicle.
Penetration-resistant glass of classes P6B, P7B is installed:
. at facilities that do not have significant material values, in the absence of centralized or permanent physical protection;
. in warehouses, regardless of the type of protection;
. repositories, depositories of museums under centralized or internal physical protection.Penetration-resistant glass of classes P7B, P8B is installed:
. at facilities where there are material assets of high consumer value, in the absence of centralized or internal physical protection;
. in the trading floors of jewelry, weapons stores, pharmacies (if they have precious metals, weapons, drugs, cash desks (regardless of the type of protection) during off-hours);
. in the internal premises of banks (if bulletproof glass is not required);
. in repositories and depositories of museums that do not have centralized or internal physical protection.Impact-resistant glass of classes P1A, P2A is installed at facilities that do not have significant material values and are under centralized or internal physical protection (grocery stores, restaurants, bars, institutions, offices, industrial premises). If you are constantly near showcases and windows of material assets, the stability class of the protective glass in the glazing must be increased.
Impact-resistant glass of classes P2A, P3A is installed:
. at facilities where material values of high consumer value, historical and cultural values are stored and are under centralized or internal physical protection;
. in operating rooms of banks, premises of government and authorities (if bulletproof glass is not required), trading floors of jewelry, weapons stores, pharmacies (provided that there are no precious metals, weapons, drugs in them during non-working hours);
. in museums, art galleries (screens, showcases to protect individual exhibits in exhibition halls).Safety glass for construction is used in translucent structures where an unexpected collision of a person with them is possible (for example, with a door, partition, showcase, steps, stair railing, etc.)
|
side of the shot protection class P2 30mm general plan |
side of the shot protection class P4 50mm general plan |
rear side protection class P2 30mm overall plan |
rear side protection class P4 50mm overall plan |
|
side of the shot protection class P2 30mm close-up |
side of the shot protection class P4 50mm close-up |
rear side protection class P2 30mm close-up |
rear side protection class P4 40mm close-up |
LLC "PROMSTEKLO" has a full cycle of glass processing. Each product is custom-made to order and undergoes strict control.
Production time, depending on the batch, from 5 working days.
If you want to order protective, shockproof, bulletproof glass or if you have any questions, please contact our specialists by phone or e-mail indicated in the section
armored glass plays the role of a reliable barrier against different in strength and dynamics of impact on the protected object. The use of such glass is a fairly effective and efficient method of protection against possible problems, while the bulletproof glass itself does not lose its main characteristics - such as light transmission and visibility. Armored glass widely used in government agencies and organizations and strategically important facilities where protection of certain areas is required - bank cash boxes, armored windows, security posts, architectural structures, etc. It is also possible to install bulletproof glass (windows, fences) are also available to the population - our company is engaged in the production and installation of armored glass for the improvement of apartments, private country houses and cottages, as well as office space.
Use of a bulletproof or impact-resistant glass allows you to protect the health and life of people. The glass itself is classified according to the degree of strength. For the production of such glass, several layers of tempered glass with a polymer are used, while the manufacture of our products is carried out in accordance with the current accepted GOST standards, which confirms the reliability of the glass and compliance with all stringent requirements.
shockproof glass protects against hacking and is a guarantee of the security of the protected object. Bulletproof glass protects people's lives and prevents the armed seizure of the object, as well as the theft of precious things and money. If you are interested in advice on choosing a bulletproof glass of a suitable protection class, you can call us at the numbers indicated on the website or send an application by e-mail.
Bulletproof glass- a multilayer structure consisting of several M1 glasses and several layers of a polymeric photocurable composition. Depending on the required protection class, the design can be either with or without a film. This design structure provides protection against bullets fired from different kind weapons, depending on the required protection class.
The armored glass design is transparent and provides protection according to classes B1, B2, B3, B4, B5 (bullet resistance class 1, 2, 3, 4 and 5) according to GOST R 51136-2008 while simultaneously transmitting light. Suitable for both internal and external glazing.
The complete set of a double-glazed window for preservation of a temperature mode is possible.
Armored glass- a guarantee of security, it was created in order to protect people and their property. That is why it is especially important that the glass is of excellent quality. You need to be sure that you and your property are fully protected. The first, second, third, fourth, fifth or sixth class of armored glass protection is selected based on the conditions and wishes of the customer.
Scope of bulletproof glass
- currency exchange points;
- places for issuing money at the cash desks of large organizations, enterprises;
- internal security posts in banks, jewelry stores, shooting galleries;
- workplaces of petrol station operators;
- workplaces of bank tellers working in operating rooms;
- workplaces of employees of duty units of internal affairs bodies;
- equipment of banks and cash collection machines;
- other buildings, structures and objects that need to be protected from burglary, strikes and shelling.
Double-glazed windows made of laminated armored glass, made using mirrored, tinted glass of various colors, have unique properties that not only protect the room from impacts and shelling, but also reduce heat loss in the cold season, protect against the harmful effects of sunlight and noise.
A mirror made of laminated glass, along with high strength characteristics and aesthetic properties, ensures its long-term and safe use in rooms with high humidity (in bathrooms and swimming pools).
Armored laminated protective glass (bulletproof glass) is intended for use on vehicles, in administrative and residential buildings, where there is a need to protect human life and material values.
Characteristics of bulletproof glass
Characteristics bulletproof glass correspond to GOST R 51136-2008 "Protective multilayer glasses". The total light transmission of glass is at least 70%. Glass must be heat and moisture resistant, withstand a temperature of 60 ° C and a humidity of 95%. Its frost resistance is minus 40 °C.
Defensive Ability bulletproof glass depends on its thickness. 37 mm thick glass holds PS-43 bullets of 7.62 mm caliber from AKM. According to the certificate issued by the State Standard of Russia, such glass corresponds to the third class of protection and, in addition, is able to hold bullets from PM, TT pistols, AK-74 assault rifles and fragments from RGD-5, F-1 and RG-42 hand grenades.
Armored glass has protective properties
- withstands repeated impact of a freely falling body;
- resistant to penetration;
- withstands the impact of firearms (PM, TT pistols, AKM submachine gun, SVD rifle) and prevents through penetration of the damaging element.
Technologies for the production of armored glass
For the manufacture of bulletproof glass, flat or curved polished blanks with a thickness of 5 to 10 mm are used. In order to increase strength, they are glued together in a certain combination. Polyvinyl butyral film is used as fastening materials. Then a layer is glued to the inner surface of the glass, which protects against damage by secondary glass fragments. In this way, not only extremely strong, but also shatterproof glass is obtained.
Protective film in armored glass
The protective film has a very high transverse tensile strength. When applied to glass, it gives it the same properties: it greatly weakens deformations transverse to the glass surface, including microvibrations. If even a small transverse deflection occurs, the viscous polymer film quickly returns the glass (providing elastic deformation) to its normal position. Of course, a sufficiently strong impact can deflect the glass with the film from its undeformed position by the distance necessary for the fragile glass to still break. But at the same time, it remains in place, glued to the protective film.
Properties of the protective film of bulletproof glass
- strengthening glass - glass does not break when not too strong blows (when hit by a soft body, foot, stone or bottle);
- shatterproof - the film prevents fragments from entering the room even when the glass does break (therefore, the protective film is applied to the armored windows from the back);
- penetration protection - maintaining the integrity of the window (even after breaking) prevents an intruder from entering the room, providing protection similar to gratings;
- the possibility of listening is almost completely excluded by removing sound vibrations from the glass with special equipment;
- soundproofing properties (sound enters the room through the window due to mechanical vibrations of the glass, retransmitting street noise);
- well absorbs ultraviolet, keeping the interior from fading and providing protection from one of the types of heat transfer. As a result, the thermal isolation of the premises from the external environment increases and, as a result, the costs of heating the premises in winter and cooling in summer are reduced;
- with similar protective qualities, glass with a protective film can be knocked out from the inside of the room.
Requirements for installing bulletproof glazing
Protective panels must have a stability class not lower than the stability class of the protective glazing used. For class B1 (P1), the panels must be made of sheet steel with a thickness of at least 6 mm. For class B3 (P3) - from armored alloy sheets with a thickness of at least 4.5 ... 7 mm.
Trays for transferring money or documents, openings for negotiating must be designed to prevent the penetration of a bullet into the protected area when fired from outside.
Vertical supports must be securely fixed at ceiling and floor level. Horizontal structural members must be securely fastened at each joint and, if possible, fastened to the walls.
Doors to the protected area should provide the same level of protection as the bulletproof glazing used. In addition, they must open outward and be equipped with a self-locking lock.
Any window in the protected area must be protected by bulletproof glazing of the same class as that installed inside the premises.
Test methods for bulletproof glass
The essence of this method is to determine the resistance of laminated glass to the effects of certain types of firearms. The tests are carried out on three samples of laminated glass measuring 500×500 mm. Draw an equilateral triangle at the center of the test specimen with sides 120 mm long. Three shots are fired at the vertices of this triangle. Glass is considered to have passed the test in the absence of through penetration.
Test requirements for bulletproof glass
- the test sample is installed in a rigid frame with clamping devices;
- the rigid frame should not move under the impact of bullets;
- the test sample must be installed perpendicular to the direction of movement of the bullet;
- all four edges of the glass must be evenly clamped, the width of the clamp must be (30 ± 5) mm, while the target area must be at least 440 × 440 mm;
- clamping forces must prevent displacement of the sample during the test, while no stress should occur that affects the result.
Behind the test sample, a fragment storage box is installed, which is a chamber that serves to collect glass fragments separated from the rear surface of the test sample and a bullet that has passed through the test sample.
The bullet velocity measuring device is electronic system, which measures the time of flight of a bullet between two sensors - targets located at a fixed distance of 300 ... 500 mm along the trajectory of the bullet. When a bullet passes through the first target sensor, a pulse is generated, which turns on a frequency counter that counts the number of pulses generated by the high-frequency generator of the device. When the bullet passes through the second target sensor, the pulse is stopped. The speed of a bullet is determined by calculation. The bullet velocity is measured at a distance of not more than 2.5 m in front of the test specimen. The measurement error should not exceed 1.0 m/s.
When a bullet hits an obstacle, the bullet and the protection material itself are damaged: the huge kinetic energy of the bullet's movement is extinguished due to the deformation of the material being compressed and torn by it (inelastic deformation). Most bullets (for submachine guns or rifles) contain a very strong, heavy steel core that, after flattening the shell, penetrates deep into the material.
For the purity of the test, a sheet of thin metal foil is placed behind the test sample, by damage to which the test results can be determined. The protection class depends not only on the means of destruction, but also on the selected cartridge and bullet.
Testing bulletproof glass
- weapons and ammunition are selected according to the protection class for which the laminated glass is to be tested;
- before testing, several preliminary shots are fired to determine whether the actual impact speed is acceptable;
- the sample is installed in the frame with the attacked side to the weapon;
- three shots are fired at the test sample in accordance with the test conditions. The impact speed and the distance between the centers of three impacts are determined with an accuracy of 1 mm;
- inspect the test sample for the presence of through holes;
- check for the presence of glass fragments and fragments that have separated from the rear surface of the test sample in the box - the fragment accumulator;
- the nature of the lesion is controlled after each shot according to the state of the control screen and the back of the sample;
- lumbago is considered through penetration of the sample by a bullet or its fragment;
- glass is considered to have passed the test if there is no penetration of the control screen by a bullet or glass fragments.
Bulletproof glass classification according to bullet resistance
| Glass protection class | Weapon Type | Name and index of cartridge | bullet core type | Bullet weight, g | Bullet speed, m/s | firing distance |
|---|---|---|---|---|---|---|
| B1 - First class of protection | Makarov pistol (PM) | 9 mm pistol cartridge 57-N-181 7.62 mm | Steel | 5,9 | 315±10 | 5 |
| B2 - Second class of protection | Tokarev pistol (TT) | pistol cartridge 57-N-132S or 57-N-134S | Steel | 5,5 | 420±10 | 5 |
| B3 - Third class of protection | AK-74 assault rifle | 5.45 mm cartridge with 7N10 bullet | Steel heat-strengthened | 3,5 | 880±10 | 5-10 |
| B4 - Fourth class of protection | AKM assault rifle | 7.62 mm cartridge with bullet 57-N-231 | Steel heat-strengthened | 7,9 | 715±10 | 5-10 |
| B5 - Fifth class of protection | Sniper rifle (SVD) | 7.62 mm cartridge ST-2M | Steel heat-strengthened | 9,6 | 825±10 | 5-10 |
| B6 - Sixth class of protection | Sniper rifle (SVD) | 7.62 mm cartridge BZ-32 | Steel | 10,4 | 820±10 | 5-10 |
Video about armored glass
Video by bulletproof glass filmed by order of the program "How it works".
In the matter of organizing security, whether it is a special car or a cash desk in a bank, special bulletproof glass plays an important role. After all, people's lives sometimes depend on its resistance to aggressive influences, including firearms. But not all glass, being protective, can be called bulletproof.
In order not to draw undue attention to such glasses and not to focus the attention of others on its increased strength, appearance protective glasses should not differ from ordinary ones. It should demonstrate its exceptional properties only in the case of a direct impact on it: not allowing the bullet fired from the weapon to pierce it through.
CREATION OF PROTECTIVE GLASSES
The idea of creating protective glass with ultra-strong properties was born in the head of the Frenchman Edouard Benedictus back in 1910 of the last century. During the experiments, he placed different numbers of sheets of special cellulose film between two ordinary panes of glass. This greatly added strength to the multilayer structure. He called his product Triplex, and his method of producing bulletproof glass is now called lamination.
Despite the fact that the French inventor made his first designs of resistant glasses mainly by hand, today it is difficult to imagine the production technology without the use of modern high-precision equipment and complex polymeric materials.
TYPES OF PROTECTIVE GLASSES
Depending on the purpose, protective glasses are made in various thicknesses, from seven millimeters to seventy-five. In fact, the thickness of the finished product determines its strength class. A typical technology for the manufacture of such products is the use of ordinary sheet glasses, between which layers of liquid polycarbonate are poured - a durable type of plastic. A bullet fired into such glass, gradually, layer by layer, passing through numerous layers, simply loses its energy and, ultimately, stops.
There are also some modifications of protective glasses. So, for example, in some special vehicles One-sided protective glass is widely used. A special polymer is integrated into it, thanks to which the design withstands aggressive impact only from one side, from the outside. This allows people who are attacked from the street to fire back with their weapons without getting out of the car. At the same time, modern equipment easily allows the glass to take the desired shape and bends, for installation in a regular car opening.
The production of laminated protective glasses is very expensive and complex in terms of manufacturing technology. Such products with a quality mark are made on high-precision modern equipment using CNC machines.
In conclusion, it is worth noting that glasses that are ideal in their strength simply do not exist. Each class of glass is guaranteed to save only from a certain threshold of exposure. And in any case, there is a preventive force that can destroy even the highest quality and most resistant bulletproof glass.
Bulletproof glass has a multilayer structure. It consists of special glass sheets and a polymer film between them. The number of layers varies depending on the protection class of the product.
Bulletproof glass: scope
The installation of such structures is justified in those places for which there is a real threat of an armed attack. The installation of special bulletproof booths and windows is carried out in banking institutions, exchange offices, courtrooms, security posts, jewelry stores, and so on. Often such structures are equipped with entrances to protected objects. Special bulletproof windows can be seen in vehicles that have body armor.
What are the advantages of such glass?
The product is resistant to shock and other mechanical damage.
. The use of special bulletproof glass minimizes the risk of injury from splinters. Even if it breaks, it will not shatter into small pieces, which usually pose the greatest danger.
. The product provides for the possibility of tinting. This feature allows you to use bulletproof glass as a decorative element.
. Bulletproof glass does not change its quality characteristics in conditions of high humidity, sudden temperature changes and other negative external factors. It retains its properties and original appearance throughout the entire operational period.
The process of coating the glass of a car from the inside with a thick film that provides protection and strength is called glass armoring. This coating withstands the impact of a hammer, bats and other heavy objects. The booking system itself came from a business. The earliest films were invented for industrial buildings and commercial premises where protection from robbers and vandals is needed. In this article, you will learn how to apply such a film yourself, what advantages and disadvantages this system has, and how effective it is.
Film varieties
There are different armored films designed for:
- Autoglass. Thickness from 250 to 310 microns. Free sale. Glued on the principle of tinting. It will take 1 month for complete drying. After that, the film withstands blows with a stone, a hammer, a bat. It saves the car and its passengers both from stones that can fly off on the highway, and he also robs.
- office buildings. Thickness, as well as at a film for an auto glasses. Suitable for offices, shop windows, workshops, large shopping centers. Rolls of material are much larger in width than for auto glass.
- especially important objects. Thickness is about 550 microns. This is necessary for especially important facilities in any state in order to protect themselves from possible terrorists. Such glass is absolutely impossible to break and penetrate into the room.
- Bulletproof for auto glass. Withstands shooting not from any firearm. The standard film is bulletproof, capable of withstanding .38 caliber bullets from a pistol. The thickness of the glass must be at least 12 mm, as well as multi-layered, exactly as windshield auto. Automata, this reservation will not be able to withstand.
Whatever the booking film, it is difficult to give a 100% guarantee of strength. The name "bulletproof" is conditional. Studies have shown that this glass will not break through if they shoot from a pistol of the specified caliber and into different parts of the glass. In the event that bullets of the required caliber hit the same place, the glass will be pierced through and not a single film can save it.
Pros and cons of booking a windshield with a film
Often, car enthusiasts believe that car tinting and booking are related to each other. In addition, there is an opinion that such a windshield coating will impair visibility and interfere with driving. All this is completely wrong. The main features and advantages of such a film:
- Quality visibility;
- Does not mix with tinting;
- Perfectly tolerates auto chemicals;
- A thick film covers the windshield, a thin film covers everything else;
- Coating with polarized film - reducing glare;
- Uniform distribution of impact;
- Protection against petty vandalism.
It is also worth remembering about the headlights, which also need protection from foreign objects.
Before you go to the service station, it is important to know the disadvantages of film booking:
- When driving or parking, dust settles on the surface of the windshield. When the car owner turns on the wipers, significant damage is caused to the film in the form of scratches. To reduce damage, avoid heavy dusting and wipe the windshield more often.
- Bubbles can appear anywhere. If they appear in front of the driver's eyes, they will usually be very annoying and reduce the quality of visibility. In addition, the appearance of the car suffers.
The price of booking car windows with a tint film starts around 3,500 rubles.
DIY booking
Glass armor is usually used by motorists who have become victims of broken glass for any reason: someone because of the stones that often fly off the wheels, and someone because of a robbery.
The appearance of the film is similar to tinted with the highest level of transparency. You can buy it in auto stores or through online stores. The procedure for applying the film is as follows.
1. You need to remove the side windows. It is necessary to follow everything according to the instructions based on the make and model of your machine. You should carefully get to the latches and remove the glass, before that, do not forget to unscrew the door cards.
2. Removal of dirt and grease. Important point- this is the degreasing of each glass completely. To do this, lay the glass on a pre-cleaned flat surface. Be careful with abrasive particles that can scratch the glass. Next, clean the inside side window where the booking film will be applied. To clean it, you can use a glass cleaner and a lint-free cloth. It is important to understand here that any dust or lint, if it suddenly remains on the surface of the glass, will not remain under the film at all, and the view of the glass from the inside of the cabin will be far from aesthetic.
3. Preparation. The film itself consists of an adhesive layer and a protective colorless substrate. First you need to measure the glass and cut off the required amount of film with a margin.
4. Now apply to clean inside glass. The film must be positioned so that the substrate is at the bottom. Using masking tape, you can perfectly fix the film on the glass. Make sure that there is at least 1 cm of film peeking out from all sides.
5. Preparation special means to remove the adhesive part from the film. For cooking, you need to take plain water and liquid soap. The proportion is 20% soap and 80% water. Shampoo should be used with minimal fragrances and additives. Otherwise, these additives will most likely enter into a chemical reaction with the adhesive layer, which will turn out to be unknown. The resulting solution must be filled with a garden sprayer
6. We glue the film and smooth it. Carefully remove the protective backing, keeping the foam only where the edges will not come into contact with the glass. Pour the prepared solution over the surface of the glass and the adhesive layer of the film. Now you should attach the armored film with the sticky side to the inside of the side window. The first film will ride on the surface, this is necessary to smooth out the bumps with a special mini-spatula (it can be changed to bank card). With simple movements from the center to the edges it is necessary to expel all air bubbles. If this is not done, then bubbles will form, which will no longer be possible to remove.
7. Drying with a building hair dryer. After straightening the entire film, it must be thoroughly dried with a hairdryer. It has a high air t and a thinner jet. The hot film will be able to stretch over the surface. Then take a break for an hour so that the film has time to cool.
8. Removing excess. Initially, at least 1 cm extra was left in order for the film to be enough. Now that it has sat down well and cooled down, you can cut off the extra parts with a clerical knife. It is best to hold the knife at an angle of 45 degrees. It is also desirable to hold the film with a spatula.
Final drying lasts far from one day. The highest degree of protection will appear in a month. Based on experiments, it is possible to break through glass with only 4-5 hits in one place with a heavy object.
Reservation of car windows with film (video)
Outcome
Thus, armoring car windows with a film very well protects not only from foreign objects flying from under the wheels, but also from possible robbers and vandals. But, as a rule, car owners begin to think about it only when something like this happens and the glass is damaged.