FR2869605A1 - Laminated structure with ballistic resistance for a wide range of glazing applications requiring bullet proof characteristics - Google Patents

Laminated structure with ballistic resistance for a wide range of glazing applications requiring bullet proof characteristics Download PDF

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Publication number
FR2869605A1
FR2869605A1 FR0404598A FR0404598A FR2869605A1 FR 2869605 A1 FR2869605 A1 FR 2869605A1 FR 0404598 A FR0404598 A FR 0404598A FR 0404598 A FR0404598 A FR 0404598A FR 2869605 A1 FR2869605 A1 FR 2869605A1
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France
Prior art keywords
laminated structure
face
structure according
glazing
sheets
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FR0404598A
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French (fr)
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FR2869605B1 (en
Inventor
Xavier Brajer
Pierre Chaussade
Rene Gy
Herve Lehrmann
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Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
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Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
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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
    • 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
    • B32B17/10128—Treatment of at least one glass sheet
    • B32B17/10137—Chemical strengthening
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • B32B17/1055—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
    • B32B17/1077—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 polyurethane
    • 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
    • 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
    • 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
    • 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
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/412—Transparent
    • 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
    • B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
    • B32B2309/08—Dimensions, e.g. volume
    • B32B2309/10—Dimensions, e.g. volume linear, e.g. length, distance, width
    • B32B2309/105—Thickness
    • 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
    • B32B2571/00—Protective equipment
    • B32B2571/02—Protective equipment defensive, e.g. armour plates, anti-ballistic clothing

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Joining Of Glass To Other Materials (AREA)

Abstract

A laminated structure, notably transparent, with ballistic resistance incorporates two opposing polycarbonate sheets connected to the rest of the structure by an intercalary adhesive layer, notably of polyurethane. The structure comprises at least three sheets of 0.9 to 3 mm glass following each other with interposition, between two neighbouring sheets, of an intercalary adhesive layer. It has a total thickness of between 15 and 40 mm. Independent claims are also included for : (a) glazing resistant to one or several impacts of 44 Magnum bullets; (b) a land, aquatic or air vehicle, building, airlock, shop window, hatch, cabin or interior partition incorporating this glazing.

Description

STRUCTURE FEUILLETEE A RESISTANCE BALISTIQUESHEET STRUCTURE WITH BALISTIC RESISTANCE

La présente invention a trait à des parois transparentes à haute résistance balistique.  The present invention relates to transparent walls with high ballistic resistance.

Par résistance balistique, on entend notamment au sens de l'invention la résistance de la paroi à un ou plusieurs impacts plus ou moins distants les uns des autres de balles à noyaux en plomb recouverts d'enveloppes de laiton, de calibres 44 Magnum, de vitesses variables. La résistance balistique s'évalue par le fait que la paroi n'est pas traversée par les balles, c'est-à-dire que la sécurité d'une personne située du côté de la paroi opposée aux impacts, est assurée.  For the purposes of the invention, ballistic resistance is understood to mean the resistance of the wall to one or more impacts, more or less distant from each other, of lead core balls covered with brass envelopes, 44 Magnum gauges, variable speeds. The ballistic resistance is evaluated by the fact that the wall is not traversed by the balls, that is to say that the safety of a person located on the side of the wall opposite the impacts, is ensured.

Les applications particulièrement concernées sont les vitrages d'automobiles de luxe, les guichets de banque, sas de sécurité, vitrines pour produits de haute valeur, hublots de portes de séparation entre cabines de pilotage d'avions et cabines passagers, ... Selon les cas, il convient de limiter plus ou moins le poids et l'épaisseur de la paroi, notamment lorsque celle-ci est mobile.  The applications particularly concerned are luxury automotive glazing, bank counters, security booths, showcases for high-value products, portholes for dividing doors between aircraft pilot cabs and passenger cabins, etc. case, it is appropriate to limit more or less the weight and thickness of the wall, especially when it is movable.

Dans ces conditions, les inventeurs se sont aperçus que la meilleure résistance balistique était obtenue avec une structure feuilletée notamment transparente, à résistance balistique, comprenant une première face et une seconde face opposée constituée d'une feuille de polycarbonate ou similaire reliée au reste de la structure par une couche adhésive intercalaire, notamment polyuréthane, caractérisée en ce que la structure comprend au moins trois feuilles de verre de 0,9 à 3 mm se succédant avec interposition, entre deux feuilles voisines, d'une couche adhésive intercalaire, et que son épaisseur totale est comprise entre 15 et 40 mm.  Under these conditions, the inventors realized that the best ballistic resistance was obtained with a particularly transparent, ballistic resistant laminate structure, comprising a first face and a second opposite face made of a polycarbonate sheet or the like connected to the rest of the structure by an interlayer adhesive layer, especially polyurethane, characterized in that the structure comprises at least three sheets of glass of 0.9 to 3 mm succeeding one another with the interposition, between two adjacent sheets, of an interlayer adhesive layer, and that its total thickness is between 15 and 40 mm.

Cette résistance balistique a été vérifiée en particulier par trois tirs aux sommets d'un triangle équilatéral comme précisé au-dessus.  This ballistic resistance was verified in particular by three shots at the vertices of an equilateral triangle as specified above.

Cette feuille de polycarbonate en face arrière peut être à la fois relativement rigide, offrant une résistance à la pénétration d'une balle, et apte à se déformer, c'est-à-dire à absorber la contrainte mécanique induite par la pénétration d'une balle dans des plis plus en avant . Elle peut être recouverte d'une couche d'aspect, d'un vernis, d'un film, d'un décor, d'une feuille de verre supplémentaire, d'une autre matière plastique ou autre sans que l'on sorte du cadre de l'invention.  This polycarbonate sheet on the rear face can be both relatively rigid, offering resistance to the penetration of a bullet, and able to deform, that is to say to absorb the mechanical stress induced by the penetration of a ball in folds further forward. It may be covered with an appearance layer, a varnish, a film, a decoration, an extra sheet of glass, another plastic or other material without leaving the framework of the invention.

De préférence, ladite première face est constituée d'une structure feuilletée caractérisée en ce que ladite première face est constituée d'une feuille de verre d'au moins 3,5 mm d'épaisseur. Dans la conception de l'invention, cette première face est celle susceptible de recevoir l'impact. Une telle feuille externe relativement épaisse procure une augmentation substantielle de la résistance au premier impact, comme en attestent les exemples de mise en oeuvre de l'invention dans la suite.  Preferably, said first face consists of a laminated structure characterized in that said first face consists of a glass sheet at least 3.5 mm thick. In the design of the invention, this first face is that capable of receiving the impact. Such a relatively thick outer sheet provides a substantial increase in resistance to the first impact, as evidenced by the examples of implementation of the invention in the following.

Dans le même but (résistance au premier impact), ladite première face est avantageusement renforcée dans sa surface.  For the same purpose (resistance to the first impact), said first face is advantageously reinforced in its surface.

Le renforcement est réalisé conformément à deux variantes principales: É La première face est trempée chimiquement, comme décrit par exemple dans le brevet FR 2 595 091, la trempe chimique consistant à remplacer des ions de la surface d'une feuille de verre silico-sodocalcique, par exemple, par d'autres de plus grands diamètres, de manière à créer une compression; ou encore É La première face est revêtue par une couche de renforcement mécanique, en contact avec l'atmosphère ambiante. Il s'agit notamment de Si3N4, de carbone amorphe tétraédrique hydrogéné ta C: H (appelé DLC pour Diamond Like Carbon) ... L'épaisseur de ces couches est notamment comprise entre 10 et 500 nm, et n'excède pas, de préférence, 300 nm.  The reinforcement is carried out according to two main variants: The first face is chemically quenched, as described, for example, in patent FR 2 595 091, the chemical quenching of replacing ions of the surface of a silica-soda-lime glass sheet. for example, by others of larger diameters, so as to create a compression; The first face is coated with a mechanical reinforcing layer, in contact with the ambient atmosphere. These include Si3N4, hydrogenated tetrahedral amorphous carbon C: H (called DLC for Diamond Like Carbon) ... The thickness of these layers is in particular between 10 and 500 nm, and does not exceed preferably 300 nm.

Si3N4 est obtenu par pulvérisation cathodique assistée par champ magnétique (magnétron) au moyen d'une cible en silicium dopé avec un métal tel qu'Al pour la rendre suffisamment conductrice, et en atmosphère nitrurante.  Si3N4 is obtained by magnetic field assisted sputtering (magnetron) using a metal-doped silicon target such as Al to make it sufficiently conductive, and in a nitriding atmosphere.

Les couches DLC peuvent résulter de la dissociation d'un précurseur tel que CH4, C2H6, C2H4, C2H2...dans une source ionique (basée ou non sur le principe de couche anodique anode layer source avec ou sans grille d'accélération des ions, excité par courant continu, alternatif ou rayonnement micro-onde), le flux d'ions ainsi créé étant dirigé sur le substrat chauffé ou non avec des énergies entre 100-2000 eV.  The DLC layers can result from the dissociation of a precursor such as CH4, C2H6, C2H4, C2H2 ... in an ion source (based or not on the principle of anode anode layer source layer with or without ion acceleration grid , excited by direct current, alternating or microwave radiation), the ion flow thus created being directed on the heated substrate or not with energies between 100-2000 eV.

20 25 30 Un effet favorable important est obtenu, d'autre part, en impact simple ou en multi-impact, par le fait que les couches adhésives intercalaires de la structure feuilletée qui séparent deux feuilles de verre ou une feuille de verre et une feuille de matière plastique telle que polycarbonate, ont un module d'Young à 25 C au moins égal à 100 MPa, de préférence à 400 MPa, et de manière particulièrement préférée à 700 MPa. Des exemples en sont un polyvinylbutyral à faible teneur en plastifiant (notamment constitué de 100 parts de résine et 19 parts d'adipate de n-hexyle), un polyuréthane thermoplastique à haut module...  A significant favorable effect is obtained on the other hand in single impact or in multi-impact, in that the interlayer adhesive layers of the laminated structure which separate two glass sheets or a sheet of glass and a sheet of plastic material such as polycarbonate, have a Young's modulus at 25 C at least equal to 100 MPa, preferably 400 MPa, and particularly preferably 700 MPa. Examples are a polyvinylbutyral with a low plasticizer content (in particular consisting of 100 parts of resin and 19 parts of n-hexyl adipate), a high modulus thermoplastic polyurethane ...

Avantageusement, l'épaisseur totale de la structure feuilletée n'excède pas 10 35 mm, de préférence 30 mm et, de façon particulièrement préférée 25 mm, ce qui maintient le poids dans les limites désirées.  Advantageously, the total thickness of the laminated structure does not exceed 10 35 mm, preferably 30 mm and, particularly preferably 25 mm, which maintains the weight within the desired limits.

D'autres objets de l'invention consistent en É Un vitrage résistant à un ou plusieurs impacts de balles, constitué d'une structure feuilletée telle que décrite précédemment, étant précisé que ladite première face est orientée du côté d'où l'impact provient, en particulier un tel vitrage résistant au moins à trois impacts de balles à noyaux en plomb recouverts d'enveloppes de laiton, de calibres 44 Magnum, et de vitesses habituelles; É Un véhicule de transport terrestre, aquatique ou aérien, un bâtiment, un sas, une vitrine, un guichet, une cabine (téléphonique, ascenseur...), une paroi intérieure ou une porte comprenant un tel vitrage.  Other objects of the invention consist of a glazing resistant to one or more impacts of bales, consisting of a laminated structure as described above, it being specified that said first face is oriented on the side from which the impact originates. especially such a glass resistant to at least three impacts of lead core bullets covered with brass envelopes, 44 Magnum calibres, and usual speeds; É A land, water or air transport vehicle, a building, an airlock, a window, a ticket office, a booth (telephone, elevator, etc.), an interior wall or a door comprising such a glazing unit.

L'invention est maintenant illustrée dans les exemples de réalisation qui suivent.  The invention is now illustrated in the following embodiments.

Exemple 1Example 1

On soumet deux structures feuilletées à des essais de résistance balistique. Les composants des structures sont des feuilles désignées par les abréviations suivantes, associées à leurs épaisseurs (en mm) : - RT = feuille de verre silico-sodocalcique flotté recuit; - PVB = polyvinylbutyral standard; - PU = polyuréthane; - PC = polycarbonate.  Two laminated structures are subjected to ballistic resistance tests. The components of the structures are sheets designated by the following abbreviations, associated with their thicknesses (in mm): RT = sheet of annealed float soda-lime glass; PVB = standard polyvinylbutyral; PU = polyurethane; - PC = polycarbonate.

Première structure feuilletée: 2,1 RT/(0,76 PVB/2,1 RT)x5/2,5PU/4 PC (épaisseur totale = 22,90 mm).  First laminated structure: 2.1 RT / (0.76 PVB / 2.1 RT) x5 / 2.5PU / 4 PC (total thickness = 22.90 mm).

Deuxième structure feuilletée: 6 RT / 0,76 PVB / 5 RT / 0,76 PVB / 4 RT / 2,5 PU / 3 PC (épaisseur totale = 22,02 mm).  Second laminated structure: 6 RT / 0.76 PVB / 5 RT / 0.76 PVB / 4 RT / 2.5 PU / 3 PC (total thickness = 22.02 mm).

Le test consiste à tirer sur un échantillon de 500 x 500 mm2 de l'une des structures ci-dessus, aux trois sommets d'un triangle équilatéral de côté variable.  The test consists of drawing a sample of 500 x 500 mm2 from one of the structures above, at the three vertices of an equilateral triangle of variable side.

Les balles sont à noyaux en plomb recouverts d'enveloppes de laiton et de calibre 44 Magnum.  The bullets are lead cores covered with brass and 44-caliber Magnum envelopes.

On détermine une vitesse limite de perforation (VLP) qui correspond à la vitesse maximale du projectile n'induisant pas de perforation même partielle du blindage.  A maximum perforation speed (VLP) is determined which corresponds to the maximum velocity of the projectile not inducing even partial perforation of the armor.

On obtient les résultats suivants: - première structure: VLP = 480 m/s pour un triangle de 60 mm de côté ; - deuxième structure: VLP = 450 m/s pour un triangle de 90 mm de côté.  The following results are obtained: first structure: VLP = 480 m / s for a 60 mm triangle; - second structure: VLP = 450 m / s for a triangle of 90 mm side.

Ces valeurs traduisent la supériorité de la première structure, qui comprend des plis fins de verre successifs (séparés par un intercalaire adhésif).  These values reflect the superiority of the first structure, which comprises successive thin glass folds (separated by an adhesive interlayer).

Exemple 2 On évalue les structures suivantes: Troisième structure: 2,1 RT / (0,76 PVB / 2,1 RT) x 4 / 2,5 PU / 4 PC (épaisseur totale = 20, 04 mm).  Example 2 The following structures are evaluated: Third structure: 2.1 RT / (0.76 PVB / 2.1 RT) x 4 / 2.5 PU / 4 PC (total thickness = 20.04 mm).

Quatrième structure: RT / (0,76 PVB / 1,6 RT) x 3 / 2,5 PU / 4 PC (épaisseur totale = 18,58 mm) Des séries de trois tirs aux sommets d'un triangle équilatéral de 120 mm de côtés sont effectuées.  Fourth structure: RT / (0.76 PVB / 1.6 RT) x 3 / 2.5 PU / 4 PC (total thickness = 18.58 mm) Sets of three shots at the vertices of an equilateral triangle of 120 mm sides are made.

Les vitesses limites de perforation sont: - 439 m/s pour la troisième structure, - et 437 m/s pour la quatrième.  The maximum perforation speeds are: - 439 m / s for the third structure, - and 437 m / s for the fourth.

La quatrième structure est meilleure: à épaisseur moindre elle présente une vitesse limite de perforation comparable.  The fourth structure is better: at lower thickness it has a comparable limiting speed of perforation.

Exemple 3Example 3

On évalue la résistance balistique comparée de verre trempé chimiquement conformément au brevet FR2 595 091 (noté sous forme abrégée RC).  The comparative ballistic resistance of chemically quenched glass is evaluated in accordance with Patent FR 2 595 091 (abbreviated form RC).

Les structures feuilletées sont soumises à un unique impact, au moyen des mêmes projectiles qu'aux exemples 1 et 2; on mesure également les vitesses limites de perforation. Cinquième structure: RC / 2,01 PU / 3 PC VLP = 503 m/s Sixième structure: 10RT/2,01 PU/3 PC VLP = 430 m/s La trempe chimique accroît la résistance balistique, au moins au premier impact.  The laminated structures are subjected to a single impact, using the same projectiles as in Examples 1 and 2; the perforation speed limits are also measured. Fifth structure: RC / 2.01 PU / 3 PC VLP = 503 m / s Sixth structure: 10RT / 2.01 PU / 3 PC VLP = 430 m / s Chemical quenching increases ballistic resistance, at least at first impact.

Claims (1)

6 REVENDICATIONS,6 CLAIMS, 1. Structure feuilletée notamment transparente, notamment à résistance balistique, comprenant une première face et une seconde face opposée constituée d'une feuille de polycarbonate ou similaire reliée au reste de la structure par une couche adhésive intercalaire, notamment polyuréthane, caractérisée en ce que la structure comprend au moins trois feuilles de verre de 0,9 à 3 mm se succédant avec interposition, entre deux feuilles voisines, d'une couche adhésive intercalaire, et que son épaisseur totale est comprise entre 15 et 40 mm.  1. A particularly transparent laminated structure, in particular with a ballistic resistance, comprising a first face and a second opposite face consisting of a polycarbonate sheet or the like connected to the remainder of the structure by an intermediate adhesive layer, in particular polyurethane, characterized in that the structure comprises at least three sheets of glass of 0.9 to 3 mm succeeding one another with the interposition, between two adjacent sheets, of an interlayer adhesive layer, and that its total thickness is between 15 and 40 mm. 2. Structure feuilletée selon la revendication 1, caractérisée en ce que ladite première face est constituée d'une feuille de verre d'au moins 3,5 mm d'épaisseur.  2. laminated structure according to claim 1, characterized in that said first face consists of a glass sheet at least 3.5 mm thick. 3. Structure feuilletée selon la revendication 2, caractérisée en ce que ladite première face est renforcée dans sa surface.  3. laminated structure according to claim 2, characterized in that said first face is reinforced in its surface. 4. Structure feuilletée selon la revendication 3, caractérisée en ce que ladite première face est trempée chimiquement.  4. laminated structure according to claim 3, characterized in that said first face is chemically quenched. 5. Structure feuilletée selon la revendication 3, caractérisée en ce que la feuille de verre constituant ladite première face est revêtue par une couche de renforcement mécanique, en contact avec l'atmosphère ambiante.  5. A laminated structure according to claim 3, characterized in that the glass sheet constituting said first face is coated with a mechanical reinforcing layer in contact with the ambient atmosphere. 6. Structure feuilletée selon la revendication 1, caractérisée en ce que les couches adhésives intercalaires qu' elle comporte, et qui séparent deux feuilles de verre ou une feuille de verre et une feuille de matière plastique telle que polycarbonate, ont un module d'Young à 25 C au moins égal à 100 MPa, de préférence à 400 MPa, et de manière particulièrement préférée à 700 MPa.  6. laminated structure according to claim 1, characterized in that the interlayers adhesive layers which it comprises, and which separate two sheets of glass or a glass sheet and a plastic sheet such as polycarbonate, have a Young's modulus at 25 C at least equal to 100 MPa, preferably 400 MPa, and particularly preferably 700 MPa. 7. Structure feuilletée selon l'une des revendications précédentes, caractérisée en ce que son épaisseur totale n'excède pas 35 mm, de préférence 30 mm et, de façon particulièrement préférée 25 mm.  7. laminated structure according to one of the preceding claims, characterized in that its total thickness does not exceed 35 mm, preferably 30 mm and, particularly preferably 25 mm. 8. Vitrage résistant à un ou plusieurs impacts de balles, constitué d'une structure feuilletée selon l'une des revendications précédentes, ladite première face étant orientée du côté d'où l'impact est attendu.  8. Glazing resistant to one or more bulletproof, consisting of a laminated structure according to one of the preceding claims, said first face being oriented on the side from which the impact is expected. 9. Vitrage selon la revendication 8, résistant au moins à trois impacts de balles à noyaux en plomb recouverts d'enveloppes de laiton, de calibres 44 Magnum, et de vitesses habituelles.  9. Glazing according to claim 8, resistant to at least three impacts of lead core bullets covered with brass envelopes, calibres 44 Magnum, and usual speeds. 10. Véhicule de transport terrestre, aquatique ou aérien, bâtiment, sas, vitrine, 5 guichet, cabine ou paroi intérieure, porte comprenant un vitrage selon la revendication 8.  10. Land transport vehicle, aquatic or air, building, airlock, showcase, window, cabin or inner wall, door comprising a glazing unit according to claim 8.
FR0404598A 2004-04-30 2004-04-30 SHEET STRUCTURE WITH BALISTIC RESISTANCE Expired - Fee Related FR2869605B1 (en)

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