WO2020058439A1 - Vitrages isolants antiballes - Google Patents

Vitrages isolants antiballes Download PDF

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Publication number
WO2020058439A1
WO2020058439A1 PCT/EP2019/075234 EP2019075234W WO2020058439A1 WO 2020058439 A1 WO2020058439 A1 WO 2020058439A1 EP 2019075234 W EP2019075234 W EP 2019075234W WO 2020058439 A1 WO2020058439 A1 WO 2020058439A1
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WO
WIPO (PCT)
Prior art keywords
laminated pane
glass sheets
pane
glass
thickness
Prior art date
Application number
PCT/EP2019/075234
Other languages
English (en)
Inventor
Louis DELLIEU
Perrine LEYBROS
Julien JEANFILS
Original Assignee
Agc Glass Europe
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Agc Glass Europe filed Critical Agc Glass Europe
Priority to EP19773409.8A priority Critical patent/EP3853019A1/fr
Publication of WO2020058439A1 publication Critical patent/WO2020058439A1/fr

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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
    • B32B17/10036—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
    • B32B17/10009—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
    • B32B17/10082—Properties of the bulk of a glass sheet
    • B32B17/10091—Properties of the bulk of a glass sheet thermally hardened
    • 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
    • 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
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10174—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
    • 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
    • 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
    • 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
    • B32B17/10788—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 ethylene vinylacetate
    • 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
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/67—Units comprising two or more parallel glass or like panes permanently secured together characterised by additional arrangements or devices for heat or sound insulation or for controlled passage of light
    • 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

Definitions

  • the present invention relates to security insulated glazing units.
  • Safety glazing and projectile / ballistic resistant glazing are classes of optically transparent window products designed to protect occupants of buildings, transport vehicles, etc., from penetration by projectiles such as, but not limited to, windblown objects, bullets, and the like.
  • the outside surface of the window pane, the face receiving the incoming projectile, is generally referred to as the attack face, and the innermost surface of the window pane closest to the occupants of the building, vehicle, etc., is referred to as the protective side.
  • BRG products are typically constructed from several layers of glass and/or plastics or polymers.
  • Conventional glass materials used for ballistic laminates include soda lime glass and borosilicate glass which are typically manufactured using a float process.
  • BRG window panes are very thick and heavy, and the overall thickness, number of glass, plastic, and/or interlayer sheets, and the specific weight (e.g. mass per unit area) of the construction can be varied to resist various threat levels.
  • threat levels are generally a function of the type of projectile, the mass of the projectile and its construction, and velocity obtained from the explosive charge in the respective cartridge as well as the impact of one or more projectiles (typically three projectiles) within a predetermined area.
  • Exemplary international ballistic standards include the European Standard (EN) 1063: 1999 Security Glazing Ballistic Standard.
  • Each conventional BRG construction has its advantages and disadvantages depending upon the respective constituent layers.
  • all glass constructions are generally durable (not susceptible to scratching or UV attack) and are clear with little visual distortion; however, all glass constructions are heavy and are generally the thickest constructions.
  • Acrylic constructions are relatively light but are not durable or optically clear without distortion.
  • Glass clad polycarbonate structures are generally lighter than all glass but suffer from optical visual distortions, and the polycarbonate layer is easily scratched.
  • the polycarbonate layer is usually treated with an anti- scratch surface coating if exposed on a surface of the respective laminate structure.
  • an additional UV coating is applied to stop detrimental yellowing of the polycarbonate material occurring with prolonged exposure to UV rays.
  • Such coatings generally increase the expense of polycarbonate -based BRG constructions.
  • conventional acrylic and polycarbonate layers are susceptible to chemical degradation, e.g., methanol, toluene, acetone, methylene chloride, and gasoline. Defects caused by such chemical degradation range from cracking to tacky surfaces and/or sheer layer destruction, each of which negatively affects optical transparency and threat protection performance of a respective window pane.
  • CT chemically tempered
  • a laminated glazing“5: 15: 15: 15: 15:5” (where means a layer of interlayer and the number is the thickness of the glass layer - This example is a 6 glass layers with 5 interlayers) is BR6 NS certified according to the test made regarding cited norms.
  • the double glazing 4:4/15/5: 15: 15: 15:15:5 (where means a layer of interlayer, 715/” a gap of 15mm maintained by the spacer and the number is the thickness of the glass layer) is naturally BR6 NS certified without any complementary test.
  • the invention relates to an improved insulated glazing unit, configured for resisting to a projectile (6) with an kinetic impact energy, E, comprised between 1750 J and 1850 J (1750 J ⁇ E ⁇ 1850 J), extending along a plane, P, defined by a longitudinal axis, x, and a vertical axis, y, comprising :
  • a front laminated pane, F facing the projectile, having a total thickness, ZF, and comprising m glass sheets f, each having a sheet thickness, Zf, bonded by m-1 polymer interlayers, each having a polymer thickness, Zfi, wherein m is a positive integer greater than or equal to 2 (m>2),
  • a back laminated pane B having a total thickness, ZB, comprising at least n glass sheets, each having a sheet thickness, Zb, bonded by n- 1 polymer interlayers, each having a polymer thickness, Zbi, wherein n is a positive integer greater than or equal to 2 and
  • the thicknesses are measured in the direction normal to the plane, P.
  • the total thickness of the front laminated pane, ZF equals the sum of the thicknesses of the m glass sheets and the m-1 polymer interlayers and the total thickness of the back laminated pane, ZB, equals the sum of the thicknesses of the n glass sheets and the n-1 polymer interlayers.
  • the invention relates also to a process to produce an insulated glazing unit according to a first aspect of the invention.
  • the solution as defined in the first aspect of the present invention is based on both panes can participate to the projectile resistance performance of the IGU.
  • the front and back panes of the IGU play two different role : [0020] Front laminated pane (facing to the projectile) is dedicated for highly slowing down the bullet and absorbing the major part of its kinetic impact energy.
  • An interlayer cushion is a polymer interlayer with a thickness of at least 1.5 mm.
  • the standard thickness of one layer is 0.76 mm in some cases this thickness of 0.76 mm can be obtained by two thin layers of 0.38 mm.
  • several interlayers can be layered to obtain the desired thickness.
  • the insulated glazing unit is assumed to be resistant against a projectile with a given kinetic impact energy if the glazing does not have any "through" holes, from the front to the back.
  • An IGU able to resist against a projectile with a given kinetic impact energy, E, between 1750 J and 1850 J (1750 J ⁇ E ⁇ 1850 J), according to standard EN 1063, will be classified BR5.
  • the bullet can be mainly stopped but a splitting behaviour of the protective face can occur.
  • a second block or pane must be employed, the back laminated pane and must exhibit at least one of the two following characteristics high rigidity or high stress at failure.
  • the first alternative will ensure that the second bloc will not admit a deformation which could lead to its breakage.
  • the second alternative will allow the second bloc to admit a bigger deformation than the one allowed in the first alternative without breakage. This second alternative leads to the decrease of the laminated thickness and requires to work with tempered glass.
  • the total thickness of the back laminated assembly, ZB is at most 1/3 of the sum of the total thickness of the front laminated pane, ZF, and the total thickness of the back laminated pane, ZB (ZB ⁇ 1/3 * (ZF + ZB)) and in that at least 2 glass sheets of the back laminated pane, ZB, are tempered.
  • the total thickness of the back laminated assembly, ZB is at most 1/4 of the sum of the total thickness of the front laminated pane, ZF, and the total thickness of the back laminated pane, ZB (ZB ⁇ 1/4 * (ZF + ZB)) and more preferably, the total thickness of the back laminated assembly, ZB, is at most 1/5 of the sum of the total thickness of the front laminated pane, ZF, and the total thickness of the back laminated pane, ZB (ZB ⁇ 1/5 * (ZF + ZB)). This allows to facilitate transport, handling, mounting,...
  • the thickness of a laminated pane is the sum of the thicknesses of the glass sheets added to the thicknesses of the interlayers.
  • Glass sheet comprised in a laminated pane can have a different thickness such as polymer interlayers.
  • Glass sheets of the IGU of the present invention within laminated assemblies can be chosen among all flat glass technologies, among them: float clear, extra-clear or coloured glass.
  • the term “glass” is herein understood to mean any type of glass or equivalent transparent material, such as a mineral glass.
  • the mineral glasses used may be irrespectively one or more known types of glass such as soda-lime-silica, aluminosilicate or borosilicate, crystalline and polycrystalline glasses.
  • the glass pane can be obtained by a floating process, a drawing process, a rolling process or any other process known to manufacture a glass pane starting from a molten glass composition.
  • the glass sheets can optionally be edge-ground.
  • the glass pane according to the invention is a pane of soda-lime-silica glass, aluminosilicate glass or borosilicate glass.
  • films such as low emissivity films, solar control films (a heat ray reflection films), anti-reflective films, anti- fog films, preferably a heat ray reflection film or a low emissivity film, can be provided on at least one of the inner sheet faces and/or outer sheet faces of the laminated panes.
  • Laminated panes within the IGU of the present invention may typically comprise from 2 to 10 glass sheets corresponding to m and n, positive integers, preferably from 2 to 7 glass sheets and at least corresponding layers of polymer interlayers (m-1 and n-1).
  • the polymer interlayer to be used in the present invention typically comprises a material selected from the group consisting ethylene vinyl acetate (EVA), polyisobutylene (PIB), polyvinyl butyral (PVB), polyurethane
  • EVA ethylene vinyl acetate
  • PIB polyisobutylene
  • PVB polyvinyl butyral
  • the at least one polymer interlayer comprises a material selected from the group consisting of ethylene vinyl acetate, and/or polyvinyl butyral, more preferably polyvinyl butyral.
  • the polymer interlayer is also designated as a“bonding interlayer” since the polymer interlayer and the glass pane form a bond that results in adhesion between the glass pane and the polymer interlayer.
  • the polymer interlayer to be used in the present invention is a transparent or translucent polymer interlayer.
  • the polymer interlayer may be coloured or patterned.
  • Typical thicknesses (measured in the direction normal to the plane, P) for the at least one polymer interlayer are 0.3 mm to 3.5 mm, preferably 0.75 mm to 1.75 mm.
  • Commercially available polymer interlayers are polyvinyl butyral (PVB) layers of 0.38 mm, 0.76 mm, 1.52 mm, 2.28 m and 3.04 mm. To achieve the desired thickness, one or more of those layers can be used.
  • polyvinyl butyral polymer interlayers are preferably used.
  • Polyvinyl butyral or PVB is a resin known for applications that require strong binding, optical clarity, adhesion to many surfaces, toughness and flexibility. It is prepared from polyvinyl alcohol by reaction with butyraldehyde. Trade names for PVB-films include KB PVB, Saflex, GlasNovations, WINLITE, S-Lec, Trosifol and EVERLAM.
  • the bonding process takes place under heat and pressure also designated as autoclave process which is well known in the art.
  • the PVB interlayer becomes optically clear and binds the two panes of glass together. Once sealed together, the laminate behaves as a single unit and looks like normal glass.
  • the polymer interlayer of PVB is tough and ductile, so brittle cracks will not pass from one side of the laminate to the other.
  • Another process known in the art and preferred for the present invention is the autoclave free laminated glass production. This process reduces kinetic impact energy costs but has the drawback of limiting the types. Autoclave free oven makes preferentially EVA and dedicated PVB laminated glass. In such case, to achieve the desired thickness and security requirements, one or more of those autoclave free polymer interlayers can be used.
  • the usual process for such autoclave free interlayers is the vacuum bag process
  • At least one of tempered glass sheets of the insulated glazing unit is chemically tempered to improve the bending stress of the tempered glass sheet.
  • the distance, D is equal to or greater than 6mm (D>6 mm), preferably equal to or greater than 9mm (D > 9mm).
  • the distance, D is equal to or lower than 25 mm (D ⁇ 25 mm), preferably equal to or lower than 20 mm (D ⁇ 20 mm), more preferably equal to or lower than 15 mm (D ⁇ 15 mm).
  • the distance D is typically comprised between 6 mm and 25 mm (6 mm ⁇ D ⁇ 25 mm), preferably between 9 mm and 20 mm (9 mm ⁇ D ⁇ 20 mm), more preferably between 9 mm and 15 mm (9 mm ⁇ D ⁇ 15 mm).
  • the back laminated pane has an outer pane face coupled to a third glass pane along the periphery of the insulating glazing unit via a peripheral spacer bar, creating an insulating cavity sealed by a peripheral edge seal.
  • At least one glass sheet of the front laminated pane is tempered and preferably chemically tempered.
  • At least one of tempered glass sheets of back laminated pane is placed at the opposite face from the face facing the projectile and in a more preferred embodiment, at least one of tempered glass sheets of back laminated pane is placed at the opposite face from the face facing the projectile to maximize the total performance of the laminated assembly to maximize the total performance of the laminated assembly.
  • all tempered sheets of back laminated pane are placed at the opposite face from the face facing the projectile.
  • the invention relates also to a process to manufacture an insulated glazing unit comprising a front laminated pane facing the projectile and comprising at least m glass sheets bonded by at least m-1 polymer interlayers, m is a positive integer greater or equal to 2, a back laminated pane comprising at least n glass sheets bonded by at least n-1 interlayers, n is a positive integer greater or equal to 2 and a spacer maintaining a distance, D, between the front laminated pane and the back laminated pane.
  • the process comprises a step to assembly the front laminated pane and the back laminated pane with a spacer to maintain a distance D between laminated panes, and the thickness of the back laminated pane is at most 1/3 of the total thickness of the front laminated pane and preferably 1/4 of the total thickness of the front laminated pane and more preferably 1/5 of the total thickness of the front laminated pane, and at least 2 glass sheets of the back laminated pane are tempered.
  • FIG. 1 is a schematic view of a glazing panel according to an exemplifying embodiment of the present invention.
  • FIG. 1 shows an insulated glazing unit (10) configured to resist to a projectile
  • E kinetic impact energy
  • E kinetic impact energy
  • P a longitudinal axis, X, and a vertical axis, y
  • a front laminated pane, F facing the projectile, having a total thickness, ZF, and comprising m glass sheets, f, each having a sheet thickness, Zf, bonded by m-1 polymer interlayers, fi, each having a polymer thickness, Zfi, wherein m is a positive integer greater than or equal to 2 (m>2)
  • a back laminated pane B having a total thickness, ZB, comprising at least n glass sheets, each having a sheet thickness, Zb, bonded by n- 1 polymer interlayers, bi, each having a polymer thickness, Zbi, wherein n is a positive integer greater than or equal to 2 and c.
  • a spacer, S maintaining a distance, D, between the front laminated pane F and the back laminated pane, B wherein the thicknesses are measured in the direction normal to the plane, P, in the axis, z.
  • the total thickness of the front laminated pane, ZF equals the sum of the thicknesses of the m glass sheets and the m-1 polymer interlayers
  • the total thickness of the back laminated pane, ZB equals the sum of the thicknesses of the n glass sheets and the n-1 polymer interlayers
  • the front glass pane comprises four glass sheets (f 1 , f2, f3, and f4) and three interlayers (fi1 , fi2, fi3).
  • the thickness of each glass sheet is respectively Zf 1 , Zf2, Zf3 and Zf4.
  • the thickness of each polymer interlayer is respectively Zfi1 , Zfi2 and Zfi3.
  • the total thickness of the front laminated pane, ZF Zf1 + Zfi1 + Zf2 + Zfi2 + Zf3 + Zfi3 + Zf4.
  • the back laminated pane comprises three glass sheets (b1 , b2, b3) and two interlayers (bi 1 , bi2).
  • each glass sheet is respectively Zb1 , Zb2 and Zb3.
  • the thickness of each polymer interlayer is respectively Zbi 1 and Zbi2.
  • the total thickness of the front laminated pane, ZB Zb1 + Zbi1 + Zb2 + Zbi2 + Zb3.
  • each thickness of each glass sheet , Zf1 , Zf2, Zf3, Zf4, Zb1 , Zb2 and Zb3, can be different and each thickness of each polymer interlayer, Zfi 1 , Zfi2, Zfi3, Zbi 1 and Zbi2, can be different independently the number of glass sheet used (m or n).
  • m or n the number of glass sheet used
  • glass sheet b1 or b2 is tempered and glass sheet b3 is tempered.
  • Glass sheet b3 is the glass sheet of the back laminated assembly placed at the opposite face from the face (f1a) facing the projectile (6).
  • At least glass sheets b2 and b3 are tempered meaning the furthest away from the projectile two glass sheets when the back laminated pane comprises three glass sheets understood that the back laminated pane is not limited in term of number of glass sheets
  • the back laminated pane comprises two to five glass sheets (2 ⁇ n ⁇ 5) and more preferably at most four glass sheets (n ⁇ 4)
  • all glass sheets of the back laminated pane can be tempered.
  • At least one glass sheet of the front laminated pane is tempered to limit the weight of the front laminated pane and preferably, the tempered glass is the closest glass sheet, f 1 , from the projectile.
  • Examples E1 and E2 illustrate different embodiments of IGU of the present invention, demonstrating the required resistance to projectile (BR5).
  • Examples E3 illustrate a comparative embodiment of IGU. Configurations and thicknesses of examples are shown in Table 1.
  • Examples E1 and E2 and the comparative example E3 are classified BR5 NS according to standard EN 1063.
  • Table 1 Examples - configurations and thicknesses
  • Glass sheets and polymer interlayers have different thicknesses (respectively Zfl , Zf2, Zf3, Zf4, Zfi1 , Zfi2, Zfi3, Zb1 , Zb2 and Zbi1 ) as shown in Table 1 at the corresponding line in the column E1.
  • the ratio of the back laminated pane is the thickness of the back laminated pane divided by the sum of the thicknesses of the front and the back laminated panes, ZB/(ZF
  • the IGU of example 1 allows to reduce the total weight by keeping same properties such as BR5NS.
  • Example E2 is an IGU according to the invention in comparison with example E3 with same performances but much thicker and heavier than E2. Another advantage of the IGU according to the invention is to provide a thinner IGU. Thus, handling, transportation and manipulations are facilitated. Installers can mount assemblies according to the invention in an easier way to reduce risk of breakage, pain and falls.
  • Glass sheets and polymer interlayers have different thicknesses (respectively Zfl , Zf2, Zf3, Zf4, Zfi1 , Zfi2, Zfi3, Zb1 , Zb2 and Zbi1) as shown in Table 1 at the corresponding line in the column E2.
  • the thickness of the front laminated pane is 32.56 mm and the back laminated pane is 8.76 mm.
  • the comparative example E3 is an IGU without any tempered glass sheet.
  • Glass sheets and polymer interlayers have different thicknesses (respectively Zf 1 , Zf2, Zf3, Zf4, Zfi1 , Zfi2, Zfi3, Zb1 , Zb2, Zb3n Zbi1 and Zbi2) as shown in Table 1 at the corresponding line in the column E3.
  • the thickness of the front laminated pane is 32.56 mm and the back laminated pane is 17.52 mm.
  • ZB 0.35 * (ZF + ZB).
  • Example 3 is heavier than the structure of the example E2 according to the invention for a BR5 NS performances.
  • There are known solutions to improve the example E3 but all these solutions have an overcost and/or aesthetic problems.
  • a layer of polycarbonate laminated with poly-urethane layer can be added to the assembly.
  • polycarbonate suffers from several drawbacks such as bad aesthetic durability (yellowness), high cost, processing problem with glass assembly and the thermal expansion coefficient is so different from the one of the glass than delaminations can occur.
  • Another advantage of the IGU according to the invention is to provide a thinner IGU. Thus, handling, transportation and manipulations are facilitated. Installers can mount assemblies according to the invention in an easier way to reduce risk of breakage, pain and falls.
  • IGUs according to the present invention are thinner than other known IGU with same performances even if it exists an overcost for the tempering...

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

Abstract

La présente invention concerne un vitrage isolant conçu pour résister à un projectile (6) ayant une énergie cinétique d'impact (E) comprise entre 1750 J et 1850 J, s'étendant le long d'un plan (P) défini par un axe longitudinal (x) et un axe vertical (y), comprenant une vitre feuilletée avant (F), faisant face au projectile, ayant une épaisseur totale (ZF) et comprenant m feuilles de verre (f), ayant chacune une épaisseur de feuille (Zf), liées par m-1 couches intermédiaires de polymère (fi), ayant chacune une épaisseur de polymère (Zfi), m étant un nombre entier positif supérieur ou égal à 2 (m ≥ 2), une vitre feuilletée arrière (B), ayant une épaisseur totale (ZB), comprenant au moins n feuilles de verre, ayant chacune une épaisseur de feuille (Zb), liées par n-1 couches intermédiaires de polymère (bi), ayant chacune une épaisseur de polymère (Zbi), n étant un nombre entier positif supérieur ou égal à 2, et un intercalaire (S), maintenant une distance (D) entre la vitre feuilletée avant (F) et la vitre feuilletée arrière (B) ; les épaisseurs sont mesurées dans la direction perpendiculaire au plan (P), selon l'axe (z), l'épaisseur totale (ZF) de la vitre feuilletée avant étant égale à la somme des épaisseurs des m feuilles de verre et des m-1 couches intermédiaires de polymère, et l'épaisseur totale (ZB) de la vitre feuilletée arrière étant égale à la somme des épaisseurs des n feuilles de verre et des n-1 couches intermédiaires de polymère, étant entendu que ZB ≤ 1/3 * (ZF + ZB) et au moins 2 feuilles de verre de la vitre feuilletée arrière (B) sont trempées.
PCT/EP2019/075234 2018-09-19 2019-09-19 Vitrages isolants antiballes WO2020058439A1 (fr)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3930452A (en) * 1972-09-29 1976-01-06 Glaverbel-Mecaniver S.A. Impact resistant panels
DE2524241A1 (de) * 1975-05-31 1976-12-02 Bfg Glassgroup Schussichere doppelglasscheibe
DE2542441A1 (de) * 1975-09-24 1977-03-31 Bfg Glassgroup Schussichere doppelglasscheibe
FR2446902A1 (fr) * 1979-01-19 1980-08-14 Saint Gobain Vitrage Double vitrage isolant blinde
EP0109566A2 (fr) * 1982-11-22 1984-05-30 VEGLA Vereinigte Glaswerke GmbH Bloc de verre feuilleté pare-balle pour la fente de visée d'un véhicule blindé
EP2110238A1 (fr) * 2008-04-17 2009-10-21 Sälzer Sicherheitstechnik GmbH Montage de vitrage réduisant l'effet d'éclatement
WO2016165726A1 (fr) * 2015-04-16 2016-10-20 Knauf Gips Kg Structure de cloison sèche résistant à un projectile de balle

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3930452A (en) * 1972-09-29 1976-01-06 Glaverbel-Mecaniver S.A. Impact resistant panels
DE2524241A1 (de) * 1975-05-31 1976-12-02 Bfg Glassgroup Schussichere doppelglasscheibe
DE2542441A1 (de) * 1975-09-24 1977-03-31 Bfg Glassgroup Schussichere doppelglasscheibe
FR2446902A1 (fr) * 1979-01-19 1980-08-14 Saint Gobain Vitrage Double vitrage isolant blinde
EP0109566A2 (fr) * 1982-11-22 1984-05-30 VEGLA Vereinigte Glaswerke GmbH Bloc de verre feuilleté pare-balle pour la fente de visée d'un véhicule blindé
EP2110238A1 (fr) * 2008-04-17 2009-10-21 Sälzer Sicherheitstechnik GmbH Montage de vitrage réduisant l'effet d'éclatement
WO2016165726A1 (fr) * 2015-04-16 2016-10-20 Knauf Gips Kg Structure de cloison sèche résistant à un projectile de balle

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