FR2516646A1 - Bullet proof screens of multiple laminate construction - with gap between laminates of hard or tough materials - Google Patents

Bullet proof screens of multiple laminate construction - with gap between laminates of hard or tough materials Download PDF

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Publication number
FR2516646A1
FR2516646A1 FR8121546A FR8121546A FR2516646A1 FR 2516646 A1 FR2516646 A1 FR 2516646A1 FR 8121546 A FR8121546 A FR 8121546A FR 8121546 A FR8121546 A FR 8121546A FR 2516646 A1 FR2516646 A1 FR 2516646A1
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FR
France
Prior art keywords
sheets
hard
panel according
polycarbonate
soft body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR8121546A
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French (fr)
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FR2516646B1 (en
Inventor
Paul Hochart
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Boussois SA
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Boussois SA
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Filing date
Publication date
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Priority to FR8121546A priority Critical patent/FR2516646A1/en
Publication of FR2516646A1 publication Critical patent/FR2516646A1/en
Application granted granted Critical
Publication of FR2516646B1 publication Critical patent/FR2516646B1/fr
Granted legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/18—Layered products comprising a layer of metal comprising iron or steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
    • B32B17/10045—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets with at least one intermediate layer consisting of a glass sheet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
    • B32B17/10045—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets with at least one intermediate layer consisting of a glass sheet
    • B32B17/10055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets with at least one intermediate layer consisting of a glass sheet with at least one intermediate air space
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10761—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing vinyl acetal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
    • E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/02—Plate construction
    • F41H5/04—Plate construction composed of more than one layer
    • F41H5/0407—Transparent bullet-proof laminatesinformative reference: layered products essentially comprising glass in general B32B17/06, e.g. B32B17/10009; manufacture or composition of glass, e.g. joining glass to glass C03; permanent multiple-glazing windows, e.g. with spacing therebetween, E06B3/66
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/02—Plate construction
    • F41H5/04—Plate construction composed of more than one layer
    • F41H5/0414—Layered armour containing ceramic material
    • F41H5/0428—Ceramic layers in combination with additional layers made of fibres, fabrics or plastics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/02—Plate construction
    • F41H5/04—Plate construction composed of more than one layer
    • F41H5/0442—Layered armour containing metal
    • F41H5/0457—Metal layers in combination with additional layers made of fibres, fabrics or plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/584—Scratch resistance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2369/00—Polycarbonates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2607/00—Walls, panels

Abstract

Multilayer bullet-proof screens comprise a combination of sets of panels of hard material, such as glass or armour plate, and sets of panels of softer tough materials, specifically polycarbonate or polyacrylate, sepd. by an air gap which pref. is at least as wide as the max. length of the largest ammunition which the screen is intended to resist. For transparent screens, one pref. structure comprises 4 sheets of toughened glass, each 1.5-4 mm. thick, with interlayers of polyvinylbutyral, sepd. by a peripheral spacer (of butyl rubber contg. desiccant filler particles) from two to four sheets of polycarbonate typically 4.5 mm. thick, bonded together by a silicone modified polycarbonate resin and pref. covered on their exposed surface with a layer of anti-shatter film. Screens are used for protecting personnel in e.g. money kiosks, military vehicles etc.

Description

La présente invention concerne un panneau anti-balles composé de plusieurs couches de matériaux transparents ou opaques, notamment pour les véhicules ou les bâtiments. The present invention relates to a bulletproof panel composed of several layers of transparent or opaque materials, in particular for vehicles or buildings.

On connaît des vitrages multifeuilletés résistant à l'impact des balles et destinés à équiper des véhicules ou des bâtiments tels que les banques. Multi-laminated glazing is known which is resistant to the impact of bullets and which is intended to equip vehicles or buildings such as banks.

Ces vitrages sont constitués de plusieurs feuilles de verre séparées par des couches de matière plastique telle que le polyvinyl-butyral. These glazings consist of several sheets of glass separated by layers of plastic material such as polyvinyl butyral.

Ainsi les vitrages résistant aux armes de poing, c'est-à-dire les révolvers, comprennent 3 à 5 feuilles de verre. Les vitrages résistant aux armes d'épaule, tees que fusils et carabines comprennent 5 à 8 feuilles de verre. Chaque feuille de verre présente une épaisseur au moins égale à 3 mm. Glazing resistant to handguns, that is to say revolvers, includes 3 to 5 sheets of glass. Glazing resistant to long guns, tees, rifles and rifles includes 5 to 8 sheets of glass. Each glass sheet has a thickness at least equal to 3 mm.

Ces vitrages anti-balles présentent principal e- ment les inconvénients de posséder une masse surfacique élevée et d'être relativement peu performants. These anti-bullet glazing mainly has the drawbacks of having a high surface mass and of being relatively ineffective.

On connaît également des panneaux opaques destinés aux véhicules automobiles, composés d'une ou plusieurs feuilles d'acier séparées par une couche de laine de roche ou de polystyrène. Opaque panels are also known for motor vehicles, composed of one or more sheets of steel separated by a layer of rock wool or polystyrene.

Ces panneaux anti-balles présentent les mêmes inconvénients que les vitrages multifeuilletés. These anti-bullet panels have the same disadvantages as multi-laminated glazing.

Il existe également un tissu anti-balles en fibres de polyarni# telles que commercialisées sous la marque Kevlar et destiné à être collé sur la carrosserie des véhicules. Ce tissu est particulièrement performant mais présente l'inconvénient d'être très cher. De plus, ce tissu ne peut être appliqué sur les surfaces transparen
tes des véhicules.There is also a bulletproof fabric made of polyarni # fibers as marketed under the brand name Kevlar and intended to be bonded to the bodywork of vehicles. This fabric is particularly efficient but has the disadvantage of being very expensive. In addition, this fabric cannot be applied to transparent surfaces.
your vehicles.

Le but de la présente invention est de remédier aux inconvénients des réalisations connues en créant
un panneau anti-balles présentant une masse surfacique reaute, tout en étant particulièrement performant.The object of the present invention is to remedy the drawbacks of known embodiments by creating
a bullet-proof panel with a real surface mass, while being particularly efficient.

Suivant l'invention, ce panneau anti-balles
est caractérisé en ce qu'il comprend sur son côté extérieu
exposé aux balles un corps dur comportant au moins une
feuille d'un matériau dur comme le verre et l'acier
et sur son otté intérieur, un corps mou comportant au moins une feuille de matière relativement molle, comme les matières plastiques, collées entre elles, le corps dur et le corps mou étant séparés par un espace rempli d'un gaz
tel que l'air. According to the invention, this bulletproof panel
is characterized in that it comprises on its exterior side
exposed to bullets a hard body with at least one
sheet of hard material like glass and steel
and on its inner side, a soft body comprising at least one sheet of relatively soft material, like plastics, bonded together, the hard body and the soft body being separated by a space filled with a gas
as the air.

La présence du corps mou composé de feuilles de matière plastique sur le côté intérieur du panneau permet d'alléger considérablement ce-dernier par rapport à un panneau composé uniquement de feuilles de verre ou d'acier. The presence of the soft body composed of plastic sheets on the inside of the panel makes it possible to considerably lighten the latter compared to a panel composed only of glass or steel sheets.

De plus, les essais effectués par la desanderea se ont montré ce résultat surprenant que pour une masse surfacique égale, le panneau anti-balles conforme à l'invention est nettement plus performant que les panneaux
connus en verre ou en acier.In addition, the tests carried out by the desanderea have shown this surprising result that for an equal surface mass, the anti-ballistic panel according to the invention is clearly more efficient than the panels.
known in glass or steel.

Les excellentes performances du panneau conforme à l'invention peuvent s'expliquer d'une part, par la présence de l'espace rempli de gaz entre le corps
dur et le corps mou qui a pour effet de déséquilibrer le projectile après sa traversée du corps dur, et de modifier ainsi sa trajectoire et d'autre part, par la présence du corps mou qui est capable d'absorber l'onde de choc engendrée par le projectile. De plus, du fait que ce corps mou sod en une matière non cassante, on
évite les risques de projection de débris vers les person
nes situées à l'intérieur du véhicule ou du bâtiment
équipé d'un panneau conforme à l'invention.The excellent performance of the panel according to the invention can be explained on the one hand, by the presence of the space filled with gas between the body
hard and soft body which has the effect of unbalancing the projectile after its crossing of the hard body, and thus to modify its trajectory and on the other hand, by the presence of the soft body which is capable of absorbing the shock wave generated by the projectile. In addition, because this soft body sod in a non-brittle material, we
avoids the risk of projection of debris towards people
located inside the vehicle or building
equipped with a panel according to the invention.

Selon une version avantageuse de l'invention, le corps mou comprend des feuilles de polycarbonate ou de polyarylate.  According to an advantageous version of the invention, the soft body comprises sheets of polycarbonate or polyarylate.

Dans le cas d'un panneau transparent, de préférence, le corps dur est composé d'au moins 4 feuilles de verre séparées entre elles par une couche de polyvinylbutyral, le corps mou étant composé d'au moins deux feuilles de polycarbonate.  In the case of a transparent panel, preferably, the hard body is composed of at least 4 sheets of glass separated from each other by a layer of polyvinylbutyral, the soft body being composed of at least two sheets of polycarbonate.

Ces matières plastiques présentent une excellente transparence et un excellent pouvoir d'absorption des ondes de choc engendrées par les balles. These plastics have excellent transparency and excellent absorption capacity for shock waves generated by bullets.

Dans le cas d'un panneau opaque, de préférence, le corps dur comprend au moins une feuille d'acier de blindage et le corps mou est constitué d'au moins deux feuilles de polycarbonate ou de polyarylate. In the case of an opaque panel, preferably, the hard body comprises at least one sheet of shielding steel and the soft body consists of at least two sheets of polycarbonate or polyarylate.

Il a été constaté d'autre part que les meilleure: performances sont obtenues lorsque l'espace rempli de gaz a une épaisseur au moins égale à la longueur de la balle à l'égard de laquelle l'assemblage est destiné à assurer la protection. It has also been found that the best: performances are obtained when the space filled with gas has a thickness at least equal to the length of the bale with respect to which the assembly is intended to provide protection.

D'autres particularités et avantages de l'invention apparaîtront encore dans la description ci-après.  Other features and advantages of the invention will appear in the description below.

Aux dessins annexés, donnés à titre d'exemples non limitatifs:
- la figure 1 est une vue en coupe transversale partielle d'un panneau anti-balles transparent, conforme à l'invention,
- la figure 2 est une vue en coupe transversale partielle d'un panneau anti-balles opaque, conforme à l'invention.In the appended drawings, given by way of nonlimiting examples:
FIG. 1 is a partial cross-section view of a transparent bullet-proof panel according to the invention,
- Figure 2 is a partial cross-sectional view of an opaque bulletproof panel, according to the invention.

Dans la réalisation de la figure 1, le panneau anti-balles transparent comprend sur son côté exposé aux balles un corps dur 1 constitué de plusieurs feuilles de verre 2, 3, 4, 5, 6, 7 et sur son côté intérieur, par exemple dirigé vers l'intérieur d'un véhicule ou d'un bâtiment, un corps mou 8 comprenant plusieurs feui de matière plastique 9, 10. In the embodiment of FIG. 1, the transparent bullet-proof panel comprises on its side exposed to the bullets a hard body 1 made up of several sheets of glass 2, 3, 4, 5, 6, 7 and on its interior side, for example directed towards the interior of a vehicle or of a building, a soft body 8 comprising several sheets of plastic material 9, 10.

Le corps dur 1 et le corps mou 8 sont séparé par un espace d'air 11 au moyen d'un cordon de caoutcho butyl ou analogue 12. The hard body 1 and the soft body 8 are separated by an air space 11 by means of a cord of butyl rubber or the like 12.

Cet espace d'air 11 a une épaisseur d au moins égale à la longueur de la balle à l'égard de laqu le le panneau est destiné à assurer la protection. This air space 11 has a thickness d at least equal to the length of the ball with respect to which the panel is intended to provide protection.

Dans l'exemple représenté sur la figure 1, le corps dur 1 est constitué par 6 feuilles de verre. In the example shown in Figure 1, the hard body 1 consists of 6 sheets of glass.

Les feuilles de verre 2 et 3 situées sur le côté exposé aux balles, ont une épaisseur égale à 3 mm et les quatr autres feuilles 4, 5r 6, 7 une épaisseur égale à 1,5 ms seulement. Ces six feuilles de verre sont séparées et rendues solidaires les unes des autres par des couck 13, 14, 15, 16, 17 de matière pïastiquetelle que le poly nylbutyral. Ces couches de matière plastique présenter chacune une épaisseur égale à 0,76 mm.The glass sheets 2 and 3 located on the side exposed to the bullets, have a thickness equal to 3 mm and the four other sheets 4, 5r 6, 7 a thickness equal to only 1.5 ms. These six glass sheets are separated and made integral with one another by layers 13, 14, 15, 16, 17 of plastic material such as poly nylbutyral. These layers of plastic each have a thickness equal to 0.76 mm.

Le corps mou 8 comprend deux feuilles 9, 10 en polycarbonate, d'épaisseur égale à 4,5 mm. Ces deux feuilles sont séparées et collées ensemble au moyf d'une couche 18 d'une résine composée de polycarbonate et de silicone. The soft body 8 comprises two sheets 9, 10 of polycarbonate, of thickness equal to 4.5 mm. These two sheets are separated and glued together using a layer 18 of a resin composed of polycarbonate and silicone.

Le cordon de butyl 12 qui détermine un espa < d'air 11 d'épaisseur égale à 6 mm, contient des partiez d'une substance déshydratante qui permet d'éviter la formation de buée entre le corps dur 1 et le corps mou
Ce cordon de butyl 12 est collé contre la feuille de verre-7 et contre la feuille de polycarbonate 9. Les bords à coller de ces feuilles 7, 9 ont été revêtu au préalable par un primaire d'accrochage tel qu'une résine à base d'époxy silane.The butyl bead 12 which determines an air space 11 of thickness equal to 6 mm, contains parts of a dehydrating substance which makes it possible to prevent the formation of fogging between the hard body 1 and the soft body
This butyl bead 12 is glued against the glass sheet-7 and against the polycarbonate sheet 9. The edges to be glued of these sheets 7, 9 have been coated beforehand with a bonding primer such as a resin based epoxy silane.

Le panneau transparent conforme à l'exemple précité présente une masse égale à 42,7 kg/m2 et son épaisseur est égale à 29,7 mm. The transparent panel according to the above example has a mass equal to 42.7 kg / m2 and its thickness is equal to 29.7 mm.

De préférence, la feuille de polycarbonate 10 située sur le côté intérieur du panneau est revêtue par une fine couche 19 d'une matière plastique transparente
dure et résistant aux rayures, telle qu'une résine polyester ou mélamine-formol.Preferably, the polycarbonate sheet 10 located on the inside of the panel is coated with a thin layer 19 of a transparent plastic material
hard and scratch-resistant, such as polyester or melamine-formaldehyde resin.

Le panneau décrit ci-dessus est parfaitement transparent et résiste à au moins deux balles du type
Brenneke tirées à 5 m au moyen d'un fusil de calibre t2 à canon de 710 mm de long. Non seulement, les balles ne traversent pas le panneau mais on-ne constate aucune projection de matière sur le côté opposé à celui de l'impact des balles.The panel described above is perfectly transparent and withstands at least two bullets of the type
Brenneke fired at 5 m using a 710 mm long t2 caliber rifle. Not only do the bullets not pass through the panel, but there is no projection of material on the side opposite to that of the impact of the bullets.

Dans un autre exemple de réalisation d'un panneau transparent, le corps dur est constitué par six feuilles de verre d'épaisseursdécroissantesà partir du côté exposé aux balles et égales successivement à 4 mm, 3 mm, 3 mm, 2 mm, 1,5 mm et 1,5 mm. In another exemplary embodiment of a transparent panel, the hard body consists of six sheets of glass of decreasing thicknesses from the side exposed to bullets and equal successively to 4 mm, 3 mm, 3 mm, 2 mm, 1.5 mm and 1.5 mm.

Ces six feuilles de verre sont collées ensemble au moyen de couches de poîyureaane d'épaisseur
croissantes, à savoir 0,3 mm, 0,3 mm, 0,4 mm, 0,4 mm et 0,5 mm respectivemenli
Dans cet exemple, le corps mou est constitué par quatre feuilles de polycarbonate d'épaisseur égale à 4,5 mm collées les unes aux autres, au moyen d'une couche de poïyuréthane d'apaisseur égale à 0,5 mm.These six sheets of glass are glued together using layers of thick paint.
increasing, namely 0.3 mm, 0.3 mm, 0.4 mm, 0.4 mm and 0.5 mm respectively
In this example, the soft body is constituted by four polycarbonate sheets of thickness equal to 4.5 mm glued to each other, by means of a layer of polyurethane of thickness equal to 0.5 mm.

L'espace d'air compris entre le corps dur et le corps mou est réalisé au moyen d'un cordon de butyl comme dans le premier exemple. The air space between the hard body and the soft body is produced by means of a butyl bead as in the first example.

La masse surfacique de ce panneau est égale à 60 kg/m2 et son épaisseur totale égale à 42,5 mm. The surface mass of this panel is equal to 60 kg / m2 and its total thickness equal to 42.5 mm.

Cet exemple de panneau résiste à des balles de calibre 7,62 mm tirées au moyen du fusil OTAN conven
tionnel. Lors des essais, aucune projection de matière n'a été observée du côté intérieur au panneau.This panel example resists 7.62mm caliber bullets fired with the appropriate NATO rifle
tional. During the tests, no projection of material was observed on the inside of the panel.

Dans un troisième exemple, le panneau antiballes non transparent, représenté sur la figure 2 comp en tant que corps dur une feuille 19 de tôle d'acier de blindage présentant une résistance à la traction égale à 600 kg/mm2 et une épaisseur de 3 mm. In a third example, the non-transparent anti-bale panel, shown in FIG. 2, consists as a hard body of a sheet 19 of armored steel sheet having a tensile strength equal to 600 kg / mm 2 and a thickness of 3 mm. .

Dans cet exemple, le corps mou est constitué par deux assemblages comportant chacun deux feuilles 20, 21; 22, 23 de polyarylate de 4 mm d'épaisseur chacu collées ensemble au moyen de couches de polyester 24, 2
La première paire 20, 21 de feuilles de poly arylate est séparée du corps dur 19 par un espace d'air 26 de 6 mm d'épaisseur réalisé au moyen d'un cordon de butyl 27 comme dans les exemples précédents.In this example, the soft body is constituted by two assemblies each comprising two sheets 20, 21; 22, 23 of 4 mm thick polyarylate each glued together using polyester layers 24, 2
The first pair 20, 21 of poly arylate sheets is separated from the hard body 19 by an air space 26 6 mm thick made by means of a butyl bead 27 as in the previous examples.

L'autre paire 22, 23 de feuilles de polyarylate est également séparée de la première par un espace d'air 2E de 6 mm d'épaisseur.The other pair 22, 23 of polyarylate sheets is also separated from the first by an air space 2E 6 mm thick.

Le panneau anti-balles selon cet exemple comporte ainsi un corps dur en acier, deux corps mou en polyarylate et deux espaces d'air. The bulletproof panel according to this example thus comprises a hard body of steel, two soft bodies of polyarylate and two air spaces.

Des panneaux de dimensions égales 50 x 50 cn réalisés selon L'exemple précité, résistent à des balla du type Bîondeau de calibre égal à 12 mm. Panels of equal dimensions 50 x 50 cm produced according to the above example, withstand balla of the Bîondeau type with a caliber of 12 mm.

Les panneaux anti-balles que l'on vient de décrire présentent l'avantage, par rapport aux réalisai connues de présenter une masse surfacique relativement faible par rapport à leur résistance aux projectiles. The bullet-proof panels that have just been described have the advantage, compared with known embodiments, of having a relatively low surface mass compared to their resistance to projectiles.

La faible masse surfacique de ces panneaux s'explique notamment par la combinaison de l'espace d'air et du corps mou constitué par les feuilles de matière plastique de densité faible par rapport à cell du verre ou de l'acier. The low surface mass of these panels is explained in particular by the combination of the air space and the soft body formed by the sheets of plastic material of low density compared to that of glass or steel.

Cette combinaison air-matière plastique exp que également les performances remarquables des pannea anti-balles conformes à l'invention. En effet, l'espace d'air est capable de déséquilibrer et de dévier la trajectoire du projectile ayant traversé le corps dur, ce qui a pour effet de diminuer considérablement son pouvoir perforant à l'égard du corps mou. This air-plastic combination exp also has the remarkable performance of the bullet-proof pannels according to the invention. Indeed, the air space is capable of unbalancing and deflecting the trajectory of the projectile having passed through the hard body, which has the effect of considerably reducing its perforating power with respect to the soft body.

Par ailleurs, ce corps mou, par sa nature est capable d'amortir les ondes de choc engendrées par le projectile lors de son impact sur le panneau. D'autre part, le corps mou qui est réalisé en un matériau non cassant, évite toute projection de débris coupants susceptibles de blesser ou même de tuer des personnes situées du côté intérieur au panneau. Furthermore, this soft body, by its nature, is capable of absorbing the shock waves generated by the projectile during its impact on the panel. On the other hand, the soft body which is made of a non-brittle material, prevents any projection of cutting debris liable to injure or even kill people located on the inside of the panel.

Bien entendu, l'invention n'est pas limitée aux exemples que l'on vient de décrire, et on peut apporter à ceux-ci de nombreuses modifications, sans sortir du cadre de l'invention. Of course, the invention is not limited to the examples which have just been described, and many modifications can be made to them, without departing from the scope of the invention.

Ainsi, dans le cas d'un panneau transparent d'excellents résultats sont obtenus en limitant à quatre le nombre de feuilles de verre du corps dur, le corps mou comprenant néanmoins au moins deux feuilles de polycarbonate ou de polyarylate collées ensemble au moyen d'une matière synthétique appropriée. Thus, in the case of a transparent panel, excellent results are obtained by limiting the number of glass sheets of the hard body to four, the soft body nevertheless comprising at least two sheets of polycarbonate or polyarylate bonded together by means of an appropriate synthetic material.

Par ailleurs, le verre des panneaux conformes à l'invention peut être du verre trempé, recuit ou trempé chimiquement. Ces verres peuvent bien entendu être teintés pour filtrer le rayonnement infra-rouge solaire. Furthermore, the glass of the panels according to the invention can be tempered, annealed or chemically toughened glass. These glasses can of course be tinted to filter solar infrared radiation.

L'espace compris entre le corps dur et le corps mou peut être rempli par un gaz sec présentant une conductibilité thermique inférieure à celle de l'air pour améliorer l'isolation thermique apportée par les panneaux. The space between the hard body and the soft body can be filled with a dry gas having a thermal conductivity lower than that of air to improve the thermal insulation provided by the panels.

Bien entendu, les panneaux conformes à l'invention, au lieu d'être plans peuvent avoir un profil bombé.  Of course, the panels according to the invention, instead of being planar, can have a curved profile.

Claims (8)

REVENDICATIONS 1. Panneau anti-balles composé de plusieurs couches de matériaux, caractérisé en ce qu'il comprend sur son côté extérieur exposé aux balles, un corps dur (1, 19) comportant au moins une feuille d'un matériau dur comme le verre et l'acier et sur son côté intérieur un corps mou (8, 22, 23) composé d'au moins une:feuiîle en matière relativement molle comme les matières plastic collées entre elles, le corps dur et le corps mou étant séparés par un espace (11, 26) rempli d'un gaz tel que l'air. 1. Bulletproof panel made up of several layers of material, characterized in that it comprises on its external side exposed to bullets, a hard body (1, 19) comprising at least one sheet of a hard material such as glass and steel and on its inner side a soft body (8, 22, 23) composed of at least one: a sheet of relatively soft material such as plastic materials bonded together, the hard body and the soft body being separated by a space (11, 26) filled with a gas such as air. 2. Panneau conforme à la revendication 1, caractérisé en ce que le corps mou (8, 22, 23) comprend des feuilles de polycarbonate ou de poîyarylate.  2. Panel according to claim 1, characterized in that the soft body (8, 22, 23) comprises sheets of polycarbonate or polyarylate. 3. Panneau transparent conforme à l'une quelconque des revendications 1 ou 2, caractérisé en ce que le corps dur (1) comprend au moins quatre feuill de verre (2, 3, 4, 5...) séparées entre elles par une couche (13,12; 15...) de polyvinylbutyral et en ce que le corps mou (8) comprend au moins deux feuilles (9, 10) de polycarbonate.  3. Transparent panel according to any one of claims 1 or 2, characterized in that the hard body (1) comprises at least four glass sheets (2, 3, 4, 5 ...) separated from each other by a layer (13,12; 15 ...) of polyvinyl butyral and in that the soft body (8) comprises at least two sheets (9, 10) of polycarbonate. Panneau opaque conforme à l'une queîconc des revendications 1 ou 2, caractérisé en ce que le corps dur (19) est constitué par une feuille d'acier de blindage et en ce que le corps mou comprend au moins deux feuilles (20, 21) de polycarbonate ou polyarylate Opaque panel according to either of claims 1 or 2, characterized in that the hard body (19) consists of a sheet of shielding steel and in that the soft body comprises at least two sheets (20, 21 ) of polycarbonate or polyarylate 5. Panneau conforme à l'une quelconque des revendications 1 à 4, caractérisé en ce que l'espace (11, 26) rempli de gaz a une épaisseur au moins égale à la longueur de la balle à l'égard de laquelle l'ase blage est destiné à assurer la protection. 5. Panel according to any one of claims 1 to 4, characterized in that the space (11, 26) filled with gas has a thickness at least equal to the length of the ball with respect to which the ase blage is intended to provide protection. 6. Panneau conforme à la revendication 3, caractérisé en ce que le corps dur (1) comprend six feuilles de verre (2, 3, 4, 5, 6, 7) d'épaisseur; décro santesdu côté extérieur vers le côté intérieur, ces épaisseursétant comprise entre 4 et 1,5 mm et en ce que le corps mou (8) comporte deux à quatre feuilles de polycarbonate (9, 10) d'épaisseur égale à 4,5 mm environ. 6. Panel according to claim 3, characterized in that the hard body (1) comprises six glass sheets (2, 3, 4, 5, 6, 7) of thickness; decreasing from the outside to the inside, these thicknesses being between 4 and 1.5 mm and in that the soft body (8) comprises two to four polycarbonate sheets (9, 10) of thickness equal to 4.5 mm about. 7. Panneau conforme à la revendication 4, caractérisé en ce que le corps dur (19) comprend une feuille d'acier d'épaisseur égale à 3 mm environ, et le corps mou présente deux paires de feuilles de polyarylate (20, 21; 22, 23) séparées du corps dur(19) et entre elles par un espace d'air (26, 28). 7. Panel according to claim 4, characterized in that the hard body (19) comprises a steel sheet of thickness equal to approximately 3 mm, and the soft body has two pairs of polyarylate sheets (20, 21; 22, 23) separated from the hard body (19) and between them by an air space (26, 28). 8. -Panneau conforme à l'une quelconque des revendications 1 à 7, caractérisé en ce que l'espace (11, 26, 28) est réalisé au moyen d'un cordon de butyl (12, 27) chargé de particules déshydratantes. 8. -Panel according to any one of claims 1 to 7, characterized in that the space (11, 26, 28) is produced by means of a butyl bead (12, 27) loaded with dehydrating particles. 9. Panneau conforme à l'une quelconque des revendications 1 à 8, caractérisé en ce que la surface extérieure du corps mou (8) est revêtue d'une couche (19) d'une matière plastique anti-rayures.  9. Panel according to any one of claims 1 to 8, characterized in that the outer surface of the soft body (8) is coated with a layer (19) of a scratch-resistant plastic.
FR8121546A 1981-11-18 1981-11-18 Bullet proof screens of multiple laminate construction - with gap between laminates of hard or tough materials Granted FR2516646A1 (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2570749A1 (en) * 1984-09-27 1986-03-28 Siat Sarl Safety glazing having a high impact resistance
EP0204188A1 (en) * 1985-05-21 1986-12-10 Flachglas Aktiengesellschaft Light transmitting sound absorption construction plate
US5059467A (en) * 1988-11-15 1991-10-22 Eagle, Military Gear Overseas Ltd. Protective ballistic panel having an interior hermetically sealed air space
US5483905A (en) * 1993-01-07 1996-01-16 Visual Security Visec Aktiebolag Security cabinet with display window
FR2869605A1 (en) * 2004-04-30 2005-11-04 Saint Gobain Laminated structure with ballistic resistance for a wide range of glazing applications requiring bullet proof characteristics
WO2008068744A1 (en) * 2006-12-05 2008-06-12 Oran Safety Glass Ltd Blast and impact resistant window pane systems
WO2009149951A2 (en) * 2008-06-13 2009-12-17 Esw Gmbh Bullet-resistant transparent laminate composite and protection arrangement having a bullet-resistant transparent laminate composite
ES2364624A1 (en) * 2010-02-25 2011-09-08 Ana Maria Ariño De Frenne Glazing of laminated safety glass
DE102012102206A1 (en) * 2012-03-15 2013-09-19 GuS Präzision in Kunststoff, Glas und Optik GmbH & Co. KG Glass structure comprises bullet-proof glass compound plates made from discs of transparent materials connected by adhesives/compound films, where free space with predetermined thickness is formed between two plates and is filled with gas

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FR2014131A1 (en) * 1968-05-17 1970-04-17 Arnold Alfred
FR2181635A1 (en) * 1972-04-24 1973-12-07 Ppg Industries Inc Laminated glass - protected from abrasion and bursting
US3917891A (en) * 1974-04-11 1975-11-04 Asg Ind Inc Fragmentation shield for impact resisting optical medium
CH579764A5 (en) * 1972-05-09 1976-09-15 Fmc Corp Multi layer armour plating - has two outer plates of steel alloy of high modulus of elasticity
DE2835669A1 (en) * 1978-08-14 1980-02-28 Holzapfel Wolfgang Multi-pane glazing using three or more panes - esp. for buildings or motor vehicles, where inner plastic pane provides high resistance to impact and theft

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2014131A1 (en) * 1968-05-17 1970-04-17 Arnold Alfred
FR2181635A1 (en) * 1972-04-24 1973-12-07 Ppg Industries Inc Laminated glass - protected from abrasion and bursting
CH579764A5 (en) * 1972-05-09 1976-09-15 Fmc Corp Multi layer armour plating - has two outer plates of steel alloy of high modulus of elasticity
US3917891A (en) * 1974-04-11 1975-11-04 Asg Ind Inc Fragmentation shield for impact resisting optical medium
DE2835669A1 (en) * 1978-08-14 1980-02-28 Holzapfel Wolfgang Multi-pane glazing using three or more panes - esp. for buildings or motor vehicles, where inner plastic pane provides high resistance to impact and theft

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2570749A1 (en) * 1984-09-27 1986-03-28 Siat Sarl Safety glazing having a high impact resistance
EP0204188A1 (en) * 1985-05-21 1986-12-10 Flachglas Aktiengesellschaft Light transmitting sound absorption construction plate
US5059467A (en) * 1988-11-15 1991-10-22 Eagle, Military Gear Overseas Ltd. Protective ballistic panel having an interior hermetically sealed air space
EP0469167A1 (en) * 1988-11-15 1992-02-05 Rabintex Industries Ltd. Protective ballistic panel
US5483905A (en) * 1993-01-07 1996-01-16 Visual Security Visec Aktiebolag Security cabinet with display window
FR2869605A1 (en) * 2004-04-30 2005-11-04 Saint Gobain Laminated structure with ballistic resistance for a wide range of glazing applications requiring bullet proof characteristics
WO2008068744A1 (en) * 2006-12-05 2008-06-12 Oran Safety Glass Ltd Blast and impact resistant window pane systems
US8898966B2 (en) 2006-12-05 2014-12-02 Oran Safety Glass Ltd. Blast and impact resistant window pane systems
WO2009149951A2 (en) * 2008-06-13 2009-12-17 Esw Gmbh Bullet-resistant transparent laminate composite and protection arrangement having a bullet-resistant transparent laminate composite
WO2009149951A3 (en) * 2008-06-13 2010-04-08 Esw Gmbh Bullet-resistant transparent laminate composite and protection arrangement having a bullet-resistant transparent laminate composite
US8833233B2 (en) 2008-06-13 2014-09-16 Krd Sicherheitstechnik Gmbh Bullet-resistant transparent laminate composite and protection arrangement having a bullet-resistant transparent laminate composite
ES2364624A1 (en) * 2010-02-25 2011-09-08 Ana Maria Ariño De Frenne Glazing of laminated safety glass
DE102012102206A1 (en) * 2012-03-15 2013-09-19 GuS Präzision in Kunststoff, Glas und Optik GmbH & Co. KG Glass structure comprises bullet-proof glass compound plates made from discs of transparent materials connected by adhesives/compound films, where free space with predetermined thickness is formed between two plates and is filled with gas

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