Bullet-resistant glazing

Abstract

Bullet-resistant glazing (100) with a ballistic block (10) made of at least two transparent panes (11, 12, 13, 14) connected to each other via an intermediate layer (19), and with at least one further transparent pane (16, 17) arranged parallel to and spaced apart from the panes (11, 12, 13, 14) of the ballistic block (10) and connected to the ballistic block (10) via a circumferential spacer (21) such that a cavity (20) is formed between the ballistic block (10) and the at least one further pane (16, 17), wherein the bullet-resistant glazing (100) and in particular the ballistic block (10) of the bullet-resistant glazing (100) is made without an energy-absorbing layer or film made of polycarbonate. wherein the intermediate layer (19) between the at least two transparent discs (11, 12, 13, 14) of the ballistic block (10) is formed from a material which is highly strong compared to polycarbonate, wherein the glazing (100) is an uninterrupted or monolithic transparent surface of in particular at least 15 m² 2 and preferably at least 20 m 2 exhibits, and wherein the ballistic block is statically self-supporting.

Description

[0001] The invention relates to bullet-resistant glazing. In particular, the invention relates to a transparent, shatter-proof, and bullet-resistant glazing and its use.

[0002] It is well known that wall structures, such as building facades, can be designed to be bullet-resistant in buildings with high security risks. If such facades or wall structures are to be transparent, bullet-resistant glass elements are installed. Due to the high thermal insulation requirements, bullet-resistant insulating glass elements are generally used.

[0003] For example, such a bullet-resistant insulating glass element is known from DE 29 01 951 A1. The insulating glass layer is formed by two individual panes spaced apart by a spacer. The resulting air gap provides the desired improved thermal insulation.

[0004] The bullet-resistant glass layer is formed by additional individual panes glued together on the individual panes. This creates so-called laminated glass packages, which are constructed from several individual panes arranged one behind the other, bonded together at their mutually contacting surfaces by foil or cast resin.

[0005] However, for manufacturing, transport, and architectural reasons, the dimensions of bullet-resistant insulating glass units are limited. For facade or wall constructions, a large number of individual bullet-resistant insulating glass units are therefore required, which must be spaced apart to allow the elements that ultimately form the frame to be arranged, thus enabling the edges to be securely clamped by individual insulating glass units.

[0006] However, this approach has several disadvantages. For example, if an angled shot is fired at the edge of the bullet-resistant insulating glass elements, where the trajectory runs diagonally within the bullet-resistant insulating glass element, i.e., at an angle to its main plane, the projectiles can exit the edge area of ​​the insulating glass elements. After that, the projectiles only need to penetrate the designated elements of the facade structure to reach the area to be protected.

[0007] The façade elements that hold the bullet-resistant insulating glass units are usually composite profile arrangements, particularly hollow-chamber aluminum profiles, which do not offer sufficient bullet resistance. Since the projectiles only need to penetrate a portion of the individual panes of the laminated glass package during an angled shot, this poses a threat to the area to be protected. The bullet resistance of the bullet-resistant insulating glass units can be extremely high in individual cases during an angled shot.

[0008] To avoid this disadvantage, it is known to provide steel inserts on the facade elements in the area between adjacent insulating glass units. In individual cases, several such steel inserts may be required, which can be arranged, for example, in the cavities of corresponding hollow chamber profiles.

[0009] However, the installation of such steel inserts is extremely labor-intensive, as a number of additional steps are required during the manufacture of such facade structures. For example, the steel inserts must be deflected according to the length of the facade elements to be protected and inserted, secured, and attached in locations that are usually difficult to access. Sometimes, additional steel corner pieces must be considered in the area of ​​corner joints, which are intended to protect the facade structure against fire, even in its corner areas.

[0010] Another problem with such steel inserts is that they interrupt the desired poor heat transfer in the corresponding areas of the facade. Therefore, it may be necessary to install additional insulation inserts, which in turn incur additional costs for manufacturing and, above all, installation.

[0011] Instead of using steel inserts, it would be conceivable – at least theoretically – to increase the dimensions of the bullet-resistant insulating glass units. However, as already indicated, the dimensions are limited, particularly for manufacturing reasons. In particular, for technical reasons, bullet-resistant or bullet-resistant glazing with dimensions larger than 7 m (length) x 2 m (width) is currently not feasible, as this is the critical size of the polycarbonate sheet or shatter-resistant film typically applied to a surface opposite the direction of impact in bullet-resistant glass. Larger formats are not feasible, in particular because the static requirements would then no longer be met. This is primarily due to the fact that laminate films for polycarbonate limit load transfer above a size of approximately 14 m 2 can no longer afford.

[0012] Furthermore, although the proportion of polycarbonate in the bullet-resistant or bullet-resistant glazing would have a positive effect on bullet resistance, negative consequences for the fire behavior occur when the plastic or polycarbonate proportion reaches a certain mass.

[0013] The document DE 29 01 951 A1 relates to a bullet-resistant, double-shell insulating glass pane with an asymmetric structure, consisting of two laminated glass panes separated from one another by an air gap, wherein the laminated glass pane facing the bullet side comprises at least three silicate glass layers connected to one another via thermoplastic films, and the laminated glass pane facing away from the bullet side comprises two silicate glass layers.

[0014] The document DE 10 2016 204 082 A1 relates to a security system with a transparent pane device. The transparent pane device is designed, for example, as a window of a room in a building or as a window of a means of transport. The security system comprises a liquid crystal film with adjustable transparency, wherein the liquid crystal film is arranged on the transparent pane device and / or at a distance from the transparent pane device. A sensor unit is configured to emit a sensor signal. The sensor unit is arranged on the transparent pane device. Furthermore, a control device is provided for adjusting the transparency of the liquid crystal film depending on the sensor signal.

[0015] The publication Kuraray, TROSIFOL™ CASE STUDY SENTRY GLASS FOR SKY SLIDE IN LA, 2017 describes a glass facade used in the US Bank Tower.

[0016] The publication WO 2017 / 174 578 A1 relates to a transparent safety panel for the production of a robust, flush butt joint glazing.

[0017] Publication WO 2018 / 024387 A1 relates to a transparent, shatterproof, bullet-resistant glazing with fire protection properties. The bullet-resistant glazing comprises a ballistic block composed of at least two transparent panes. The at least two transparent panes are firmly bonded to one another by at least one transparent, adhesion-promoting layer. Each pane has a thickness of at least 3 mm.

[0018] The bullet-resistant glazing also includes a fire protection unit consisting of at least two transparent panes bonded together by a transparent, intumescent layer. At least one spacer is provided between the fire protection unit and the ballistic block.

[0019] Based on the problem described at the outset, the object of the invention is to provide a bullet-resistant glazing with which dimensions can be realized that are significantly larger than the currently achievable dimensions of approximately 7 mx 2 m, while at the same time effectively preventing the release of splinters when the glazing is shot at, and wherein the bullet-resistant glazing also meets the conditions for classification BR1-NS to BR7-NS specified in standard EN 1063 (status of the standard: date of application).

[0020] According to the invention, this object is achieved by the subject matter of independent patent claim 1, wherein advantageous developments of the bullet-resistant glazing mentioned in independent patent claim 1 are specified in the subclaims.

[0021] Accordingly, the present invention particularly relates to bullet-resistant glazing comprising a ballistic block composed of at least two transparent panes connected to one another via an intermediate layer. In addition to the ballistic block, the bullet-resistant glazing comprises at least one further transparent pane arranged parallel to and spaced from the panes of the ballistic block and connected to the ballistic block via a circumferential spacer such that a cavity is formed between the ballistic block and the at least one further pane.

[0022] According to the invention, it is provided in particular that the bullet-resistant glazing and in particular the ballistic block of the bullet-resistant glazing is designed without an energy-absorbing layer or film made of polycarbonate.

[0023] In the bullet-resistant glazing according to the invention, it is further provided that the intermediate layer between the at least two transparent panes of the ballistic block is formed from a material which is highly strong compared to polycarbonate.

[0024] In particular, in the case of bullet-resistant glazing, it is provided that the intermediate layer, via which the at least two transparent panes of the ballistic block are connected to one another, comprises a transparent and in particular polycarbonate-free and / or polymethyl methacrylate-free intermediate layer, which, compared to a polycarbonate material, connects the panes to one another with high strength.

[0025] The advantages achievable with the solution according to the invention are obvious. Because the bullet-resistant glazing comprises a ballistic block and at least one additional transparent pane arranged at a distance from the ballistic block, a bullet-resistant double-shell insulating glazing is created, which provides good thermal insulation due to the air space between the ballistic block on the one hand and the at least one additional transparent pane on the other.

[0026] On the other hand, the selected multi-layer glazing proves to be very effective in terms of its bullet-resistant or bullet-resistant properties. The ballistic block positioned on the firing side essentially prevents bullet penetration, while at least one additional pane positioned at a distance from the ballistic block on the side facing away from the firing side has the task of intercepting any fragments that may be released from the back of the ballistic block during a fire attack.

[0027] Because the ballistic block of the glazing according to the invention comprises a plurality of transparent panes which are connected to one another via an intermediate layer, wherein the ballistic block itself assumes the function of energy absorption, it is possible to dispense with any energy-absorbing films or plates, in particular on a surface of the panes of the ballistic block which is opposite a potential direction of fire.

[0028] Furthermore, the invention provides that the ballistic block is a load-bearing structure capable of withstanding loads for sizes over 15 m 2 The intermediate layer is particularly transparent and is primarily made of a polycarbonate-free and / or polymethyl methacrylate-free material.

[0029] This measure eliminates the limited manufacturing size of conventional shatter-resistant films known from the state of the art. In this respect, sizes for bullet-resistant glazing in the range of, for example, 20 m x 3.5 m (or larger) are also conceivable. In particular, a total bullet-resistant effect without fragmentation can be achieved without the bullet-resistant glazing, and in particular the ballistic block of the bullet-resistant glazing, requiring an energy-absorbing polycarbonate layer or film.

[0030] In this context, it is particularly preferred that the intermediate layer or intermediate layers of the ballistic block are formed at least partially or in regions from an ionoplast polymer or a material with similar material properties, such as high-strength polyvinyl butyral (PVB).

[0031] In this context, a two-component and in particular crystal-clear silicone is particularly suitable as a material for the intermediate layer or layers of the ballistic block. Such a two-component silicone material is particularly advantageous with regard to fire behavior, as it is difficult or impossible to ignite. According to embodiments of this aspect, a reactive and preferably crystal-clear silicone material is used, which reacts above a predetermined critical temperature. Such a silicone material can then be poured or otherwise introduced into a space between two panes of the ballistic block in the cooled state, i.e. in a state below the critical curing temperature.

[0032] Compared to conventional PVB films or PVB sheets or conventional polycarbonate sheets, which are applied as an energy-absorbing structure to an outer surface of the panes, interlayers made of high-strength polyvinyl butyral or a two-component silicone material or an ionoplast interlayer are considerably tougher and stiffer, so that the ballistic block does not become unstable even with a greater weight (i.e. with larger dimensions), but remains statically self-supporting and stable overall.

[0033] Furthermore, it has been shown that a bullet-resistant laminated glass in which a polycarbonate film is used as a ductile, energy-absorbing plastic outer layer can, due to the properties of the polycarbonate layer, develop cracks in the layer depending on temperature, which have a negative impact on the overall appearance and safety of the laminated safety glass.

[0034] By using an intermediate layer made of ionoplast, for example, in the ballistic block of the glazing according to the invention instead of a polycarbonate outer plate, no cracks occur in the ionoplast intermediate layer even in the long term, even with high temperature fluctuations in outdoor use, since it is designed to be significantly stiffer and stronger than polycarbonate.

[0035] In particular, by using a polycarbonate-free ballistic block, and in particular by using an ionoplast interlayer as an energy-absorbing plastic interlayer, glazing dimensions of at least 15 m 2 and preferably at least 20 m 2This is particularly due to the fact that the high-strength interlayer allows, on the one hand, the amount of plastic material per unit area to be reduced, which has a positive effect on the fire behaviour of the glazing, and, on the other hand, the ballistic block, even with an area of ​​over 15 m 2 is statically self-supporting.

[0036] The assessment of bullet resistance is carried out according to five bullet resistance classes. In the currently highest bullet resistance class, or resistance class BR7, for example, the firing test is carried out with the NATO G3 rifle using 7.62 x 51 full metal jacket / hard core ammunition. This bullet resistance class therefore places the highest demands on bullet resistance.

[0037] According to embodiments of the present invention, the ballistic block has a thickness - viewed in the firing direction - which withstands firing with a 7.62 x 51 mm full metal jacket / hard core cartridge according to DIN EN 1063, wherein the thickness of the ballistic block is formed in particular by a corresponding number of transparent discs, which are each connected to one another via an intermediate layer, and / or by corresponding thicknesses of the transparent discs of the ballistic block.

[0038] In order to further optimize the thermal insulation of the bullet-resistant glazing, it can be provided according to embodiments that the cavity between the ballistic block on the one hand and the at least one further transparent pane on the other hand is hermetically closed and filled with a gas with a low heat transfer coefficient, such as argon and / or krypton.

[0039] In contrast to the ballistic block constructed as a composite, it is not necessary to provide the at least one additional transparent pane spaced from the ballistic block with a high-strength interlayer—provided laminated glass is used again. Instead, a laminated glass pane is preferably used as the at least one additional pane. This consists of several individual panes bonded together by an elastic, tear-resistant polymer film. Polyvinyl butyral (PVB), for example, is used as the polymer film.

[0040] The PVB layer has a thickness of at least 0.76 mm, preferably at least 0.90 mm, and more preferably at least 1.52 mm. Polyvinyl butyral (PVB) is characterized by its high tear resistance and, thanks to its high adhesive strength, also has a strong splinter-binding effect.

[0041] A gap is provided between the ballistic block on the one hand and the at least one additional transparent pane on the other, in which any fragments generated during a fire attack are collected. The gap also serves to allow the glazing to flex to a limited extent. A distance of 8 mm to 24 mm, preferably 12 mm to 16 mm, between the ballistic block and the at least one additional pane has proven advantageous.

[0042] Values ​​between 13 mm and 60 mm have proven advantageous for the thickness of the ballistic block, and values ​​between 9 mm and 21 mm for the thickness of at least one additional pane. Both the highest possible protection and the weight of the entire glazing play a role here.

[0043] In embodiments of the double-shell glazing according to the invention, this has a total thickness of approximately 60 mm, wherein the ballistic block arranged on the firing side has a total thickness of 30 to 40 mm and a total interlayer thickness of 3 to 5 mm.

[0044] The air gap between the ballistic block on the one hand and the at least one further transparent pane is preferably 12 to 16 mm, with the at least one further pane facing away from the firing side, in particular a laminated glass pane, having a thickness of 9 to 21 mm. This at least one further pane can, for example, consist of a thin silicate glass pane facing the air gap and a thermally tempered silicate glass pane facing the outside.

[0045] This laminated glass pane is constructed in such a way that the outer, thermally toughened glass pane with high flexural strength can withstand the bending stresses caused by the deflection of the destroyed front laminated glass pane, designed as a ballistic block, and the flexural stresses exerted on it by the ejected fragments without breaking. The thin, standard glass pane facing the air space protects it from damage to its surface caused by the fragments and / or contact with the bulging front panes of the ballistic block. This ensures that the surface of this tempered glass pane remains undamaged, thus fully exploiting the high flexural strength of the thermally toughened glass pane.

[0046] According to a further aspect of the present invention, the thickness and / or the material of the at least one intermediate layer of the ballistic block and / or of the at least one further transparent pane designed as laminated glass is selected such that the calorific value of the material is less than 55 MJ / kg, and preferably less than 50 MJ / kg and even more preferably less than 45 MJ / kg.

[0047] In this way, the fire protection classification of the glazing can be improved. It is recommended that the mass distribution of the interlayer of the ballistic block and / or of at least one additional transparent pane constructed as laminated glass be between 0.02 g / m 2 and 0.10 g / m 2 , preferably between 0.05 g / m 2 and 0.08 g / m 2 and especially at 0.07 g / m 2 lies.

[0048] An exemplary embodiment of the bullet-resistant glazing according to the invention is described in more detail below with reference to the accompanying drawings.

[0049] It shows: Fig. 1 schematically and in a cross-sectional view a section of an edge region of an exemplary embodiment of the glazing according to the invention.

[0050] Bullet-resistant glazing 100% without splinter release, according to classes BR1-NS to BR7-NS according to the EN 1063 standard, is based, according to the current state of the art, primarily on the approach of retaining the splinters by applying tough layers to the inside of the glazing 100%. These applied layers are typically made of either polycarbonate or a tear-resistant, clear shatter-resistant film.

[0051] These layers, which are always located on the innermost side due to their function, have the disadvantage that they lack the scratch resistance comparable to glass surfaces. Placing the shatter protection in the cavity between the panes for this reason currently does not allow for the application of suitable solar control coatings, which are often necessary to meet the required structural properties of glazing.

[0052] In addition, the currently available shatter-resistant films or polycarbonate sheets are limited in their production size. For insulating glass units with certain sizes or corresponding structural requirements, the use of TPU composite films required for lamination of polycarbonate to glass is no longer sufficient for load transfer. Furthermore, the fire protection rating of 100 for this type of glazing is very unfavorable due to the large combustible mass of polycarbonate.

[0053] These and other disadvantages are eliminated by the glazing 100 according to the invention, which, in particular, provides for the glass and projectile fragments emitted by the exterior, unclassified bulletproof glass pane during a fire attack to be captured in the form of a ballistic block in the space between the panes of the bullet-resistant glazing 100. The space between the panes is used as a buffer for the pressure wave and the fragments. As a result, the entire glazing 100, designed as an insulating glass unit, ultimately achieves the required classification.

[0054] In detail, the Fig. 1 schematically illustrated embodiment of the glazing 100 according to the invention, this is designed with an external bulletproof glass pane as a ballistic block 10. The ballistic block 10 has at least two and - as shown in Fig. 1 - for example, four transparent panes 11, 12, 13, 14, which are each connected to one another via an intermediate layer 19.

[0055] Parallel to the panes 11, 12, 13, 14 of the ballistic block 10 and spaced therefrom by a circumferential spacer 21, a laminated glass pane 15 with a total of two (further) transparent panes 15, 16 is provided, which is connected to the ballistic block 10 via the spacer 21 in such a way that a cavity 20 is formed between the ballistic block 10 on the one hand and the laminated glass pane 15 on the other hand.

[0056] Accordingly, the bullet-resistant glazing 100 consists of the ballistic block 10 facing the firing side, which is designed as a laminated glass pane overall, and at least one further transparent pane 15, 16 facing away from the firing side, which here is also designed as a laminated glass pane 15.

[0057] This at least one further transparent pane 15, 16, designed as a laminated glass pane 15, is combined with the ballistic block 10 and the interposition of an air gap 20 to form a double-shell insulating glazing unit. The ballistic block 10 and the at least one further transparent pane 15, 16 are bonded to the spacer frame or spacer 21 via adhesive layers. The cove formed by the edge regions of the ballistic block 10 and the at least one further transparent pane 15, 16, as well as the spacer 21 / spacer frame, is formed with a sealing compound.

[0058] The ballistic block 10, designed as a laminated glass pane, has Fig.1 comprises a total of four glass panes 11, 12, 13, 14, which are each, for example, silicate glass panes that are connected to one another by means of intermediate layers 19 made of an ionoplast polymer.

[0059] The glass panes 11, 12, 13, 14 of the ballistic block 10, designed as a laminated glass pane, can each have the same thickness; however, it would also be conceivable to make the outer glass panes 11, 14 of the ballistic block 10, designed as a laminated glass pane, significantly thinner than the middle glass panes 12, 13. In these embodiments, the thicknesses of the glass panes 11, 12, 13, 14 of the ballistic block 10, designed as a laminated glass pane, are, for example, approximately 8 to 15 mm.

[0060] The air gap 20 between the ballistic block 10 and the at least one further laminated glass pane 15 is preferably at least about 12 mm.

[0061] The at least one further laminated glass pane 15 comprises the glass pane facing the air gap 20, which can be designed, for example, as a silicate glass pane with a thickness of, for example, approximately 3 mm. This glass pane 17 facing the air gap is connected to an outer glass pane 16 made of thermally tempered silicate glass via an intermediate layer 22, in particular a polyvinyl butyral intermediate layer with a thickness of, for example, 1.5 mm. This outer glass pane 16 of the at least one further laminated glass pane 15 can have the same thickness as the inner glass pane 16.

[0062] However, it is also conceivable to choose a greater thickness for the outer glass pane 16, for example a thickness of 6 mm, so that a bending strength of at least 500 kg / cm 2 is achievable.

[0063] The glazing 100 according to the invention has a bullet-resistant effect corresponding to resistance class BR37-NS, whereby no splinters are emitted on the side facing away from the bullet.

[0064] To manufacture the bullet-resistant glazing 100, no classified bullet-resistant outer pane is required, which significantly reduces the overall glass thickness and thus the weight and cost of the entire glazing 100.

[0065] This new application also eliminates the previous size restrictions imposed by, for example, the availability of polycarbonate sheets for bulletproof glass. Theoretically, this now also allows for sizes of at least 20 m x 3.5 m.

[0066] Furthermore, the glass surfaces can be cleaned just like any other glass surface. In particular, there's no need to worry about scratching polycarbonate or shatter-proof films.

[0067] Furthermore, the application of sun protection and heat protection coatings to any surface in the cavity 20 of the glazing 100 is easily possible.

[0068] By using high-strength, permanently load-bearing composite films such as ionoplasts or high-strength PVB films in the outer ballistic block, these glass panes can withstand even higher static loads. The main advantage of this is that the ballistic block also serves as the statically load-bearing outer pane of the insulating glass assembly. This is particularly relevant when using insulating glass units subject to correspondingly high loads (e.g., hurricane loads) or simply oversized. The inner laminated pane thus only has the task of creating an insulated space between the panes and absorbing the fragments.

[0069] None of this is possible when using polycarbonate sheets or shatterproof films for shatter protection. This is because, during a lamination process with corresponding composite films, such as TPU film (thermoplastic polyurethane), high-strength films cannot be bonded simultaneously in the same package. These high-strength films, such as ionoplast films, require a separate program sequence with, for example, higher temperatures, which would cause the TPU film to overheat and become unusable.

[0070] Ultimately, there is no deterioration in the fire protection classification by using standard laminated safety glass units.

Claims

[1] Bullet-resistant glazing (100) with a ballistic block (10) made of at least two transparent panes (11, 12, 13, 14) which are connected to one another via an intermediate layer (19), and with at least one further transparent pane (16, 17) which is arranged parallel to the panes (11, 12, 13, 14) of the ballistic block (10) and at a distance therefrom and is connected to the ballistic block (10) via a circumferential spacer (21) in such a way that a cavity (20) is formed between the ballistic block (10) and the at least one further pane (16, 17), wherein the bullet-resistant glazing (100) and in particular the ballistic block (10) of the bullet-resistant glazing (100) is designed without an energy-absorbing layer or film made of polycarbonate, wherein the intermediate layer (19) between the at least two transparent panes (11, 12, 13, 14) of the ballistic block (10) is formed from a material which is highly strong compared to polycarbonate, wherein the glazing (100) has a continuous or monolithic transparent surface of in particular at least 15 m 2 and preferably at least 20 m 2 and wherein the ballistic block is statically self-supporting. [2] Glazing (100) according to claim 1, wherein the intermediate layer (19) between the at least two transparent panes (11, 12, 13, 14) of the ballistic block (10) is formed at least partially or in regions from an ionoplast polymer or from a material with similar material properties, such as a high-strength polyvinyl butyral (PVB) material or from a two-component and in particular crystal-clear silicone material, in particular reactive silicone material, which reacts from a pre-determined critical temperature. [3] Glazing (100) according to claim 1 or 2, wherein the at least one intermediate layer (19) between the at least two transparent panes (11, 12, 13, 14) of the ballistic block (10) is designed such that the ballistic block (10) simultaneously forms a load-bearing structure, particularly for sizes over 15 m 2 forms. [4] Glazing (100) according to one of claims 1 to 3, wherein - viewed in the firing direction (R) - the ballistic block (10) has a thickness which withstands firing with a 7.62 x 51 mm full metal jacket / hard core cartridge according to DIN 1063, wherein the thickness of the ballistic block (10) is formed in particular by a corresponding number of transparent panes (11, 12, 13, 14), which are each connected to one another via an intermediate layer (19), and / or by corresponding thicknesses of the transparent panes (11, 12, 13, 14) of the ballistic block (10). [5] Glazing (100) according to one of claims 1 to 4, wherein the cavity (20) is hermetically closed and filled with a gas with a low heat transfer coefficient, in particular argon and / or krypton. [6] Glazing (100) according to one of claims 1 to 5, wherein the glazing (100) comprises a laminated glass as at least one further transparent pane (16, 17), wherein the laminated glass comprises at least two transparent panes (16, 17) which are connected to one another via an intermediate layer (22), wherein the material of this intermediate layer (22) comprises in particular polyvinyl butyral (PVB). [7] Glazing (100) according to claim 6, wherein the intermediate layer (22) of the laminated glass is a PVB film having a thickness of at least 0.76 mm, preferably at least 0.90 mm and more preferably at least 1.52 mm. [8] Glazing (100) according to one of claims 1 to 7, wherein the distance between the ballistic block (10) and the at least one further transparent pane (16, 17) is between 10 mm and 40 mm, preferably between 15 mm and 35 mm and more preferably between 20 mm and 30 mm. [9] Glazing (100) according to one of claims 1 to 8, wherein at least one pane (11, 12, 13, 14, 15, 16) of the glazing (100) is provided with a coating (25, 26), in particular a sun protection coating (25). [10] Glazing (100) according to claim 9, wherein a coating, in particular a sun protection coating (25), is provided on the surface of the panes (14) of the ballistic block (10) directly adjacent to the cavity (20) facing in the direction of the cavity (20); and / or wherein a coating, in particular a heat protection layer (26), is provided on the surface of the panes (17) of the at least one further pane (16, 17) directly adjacent to the cavity (20) facing in the direction of the cavity (20).

Images