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EP4440830A1 - Laminated glazing with stepped blocking element - Google Patents

Laminated glazing with stepped blocking element

Info

Publication number
EP4440830A1
EP4440830A1 EP22834682.1A EP22834682A EP4440830A1 EP 4440830 A1 EP4440830 A1 EP 4440830A1 EP 22834682 A EP22834682 A EP 22834682A EP 4440830 A1 EP4440830 A1 EP 4440830A1
Authority
EP
European Patent Office
Prior art keywords
glass
sheet
laminated glazing
adhesive layer
intermediate adhesive
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.)
Pending
Application number
EP22834682.1A
Other languages
German (de)
French (fr)
Inventor
Jean-Benoit Mayeux
Vincent Rachet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
Original Assignee
Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
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 Saint Gobain Glass France SAS, Compagnie de Saint Gobain SA filed Critical Saint Gobain Glass France SAS
Publication of EP4440830A1 publication Critical patent/EP4440830A1/en
Pending legal-status Critical Current

Links

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
    • 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
    • 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
    • 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
    • B32B17/10293—Edge features, e.g. inserts or holes
    • 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
    • B32B17/10293—Edge features, e.g. inserts or holes
    • B32B17/10302—Edge sealing
    • 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
    • B32B17/10743—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 acrylate (co)polymers or salts thereof
    • 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
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/06—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions for securing layers together; for attaching the product to another member, e.g. to a support, or to another product, e.g. groove/tongue, interlocking
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/263—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer having non-uniform 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
    • B64C1/14—Windows; Doors; Hatch covers or access panels; Surrounding frame structures; Canopies; Windscreens accessories therefor, e.g. pressure sensors, water deflectors, hinges, seals, handles, latches, windscreen wipers
    • B64C1/1476—Canopies; Windscreens or similar transparent elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
    • B64C1/14—Windows; Doors; Hatch covers or access panels; Surrounding frame structures; Canopies; Windscreens accessories therefor, e.g. pressure sensors, water deflectors, hinges, seals, handles, latches, windscreen wipers
    • B64C1/1476—Canopies; Windscreens or similar transparent elements
    • B64C1/1492—Structure and mounting of the transparent elements in the window or windscreen
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/44—Number of layers variable across the laminate
    • 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
    • B32B2307/70—Other properties
    • B32B2307/732—Dimensional properties
    • B32B2307/737—Dimensions, e.g. volume or area
    • B32B2307/7375—Linear, e.g. length, distance or width
    • B32B2307/7376—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
    • B32B2605/00—Vehicles
    • B32B2605/10—Trains
    • 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
    • B32B2605/00—Vehicles
    • B32B2605/12—Ships
    • 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
    • B32B2605/00—Vehicles
    • B32B2605/18—Aircraft

Definitions

  • This application relates to pinched glazing, subject to pressure differentials between the two faces of the glazing, such as pressurized air vehicle glazing.
  • This gasket performs several functions, including sealing with the assembly structure, protection of the sheets (or folds) on the edge and protection against humidity (prevention of delamination).
  • the gasket assumes the entire function of physical contact with the mounting structure and with the window press; the seal thus constitutes an integral separation between the laminated glazing on the one hand, the mounting structure and the glass press on the other.
  • structural element of the glazing is meant a rigid sheet constituting the laminated glazing capable of constituting on its own a monolithic glazing, of ensuring its mechanical strength, in particular, and having an elastic modulus at least equal to 1500 MPa per example.
  • These are sheets of mineral glass or transparent polymer material with a minimum thickness varying of course according to their material.
  • An intermediate adhesive layer forming part of the composition of a laminated glazing is, for example, never capable of exhibiting a minimum elastic modulus indicated above, a sufficient mechanical strength, and cannot constitute a structural sheet or ply.
  • the object of the invention was to create a two-way connection (in the plane of the glazing and perpendicular to it), independent of the structural folds (glaziers, etc.), between the mounting structure and the glazing (laminated ).
  • the glazing is thus held in place in its mounting environment, even in the event of the breakage of one or more structural folds, and even of all of them.
  • a laminated glazing comprising at least a first sheet of glass and a second sheet of glass bonded to each other by means of a first intermediate adhesive layer, the first sheet of glass being intended to form the surface of the laminated glazing in contact with the outside atmosphere, in which the edge of the first sheet of glass is recessed with respect to that of the second, a peripheral part of the free surface of the first sheet of glass, the edge of the latter, from 0 to 100% of the edge of the first intermediate adhesive layer and a peripheral part of the surface of the second glass sheet or of the first intermediate adhesive layer , projecting with respect to the first sheet of glass, describing a continuous stepped contour which is covered by a stepped element with the interposition of glue, the laminated glazing being fixed to the mounting structure by means of a press- crystal which exerts a support on said overhang relative to the first sheet of glass, support exerted via the element stepped, characterized in that the stepped element extends as far as the contact surface between the window press
  • the shape of the stepped element in particular its parts in contact with the peripheral part of the free surface of the first sheet of glass and with the overhang of the laminated glazing with respect to this first sheet of glass, are suitable blocking the laminated glazing in the direction perpendicular to its principal plane.
  • the parts of the stepped element which are in contact with the edge of the first sheet of glass and with 0 to 100% of the edge of the first intermediate adhesive layer, and the extension of the stepped element between the and the structure, are able to block the laminated glazing in the direction of its main plane; a connection between the stepped element on the one hand, the ice-presser and the mounting structure on the other hand, is achieved by said extension of the stepped element, as will be seen in more detail below.
  • the first sheet of glass is a thin sheet of non-structural protection, that is to say not providing the mechanical resistance required for monolithic glazing for example, and its main face internal to the laminated structure carries a network of wires or a thin layer such as indium oxide doped with tin (Indium Tin Oxide - ITO -), silver, gold or equivalent, anti-icing / de-icing electrical conductors .
  • the second sheet of glass is structural, often laminated on the side opposite the first sheet of glass to one or more other structural sheets, so as to constitute together the structural block of the laminated glazing.
  • the stepped element when its profile is that of the letter z, constitutes a sealing barrier, its function is to prevent any humidity from penetrating into the laminated glazing. It is metallic (aluminum, stainless steel, etc.), in polymer or composite material. Because the stepped element extends between the window presser and the structure, it is possible thanks to the invention to eliminate the injected seal which will be described in detail below, between the window presser (rapplique) and the stepped element ("Zed >>), because the latter guarantees complete sealing of the junction of the laminated glazing and the assembly structure vis-à-vis the outside atmosphere. This local removal of the injected seal (elastomer, such as silicone) provides a gain in thickness and therefore in mass of the assembly, and a more precise positioning of the glazing (removal of deformable material, in particular by compression -crushing-).
  • the invention also provides simplified electrical continuity to the aircraft ground for an anti-static layer, resolution (elimination) of noisy electrostatic discharges called in English annoying "clicking noise". in a known way the pilots, co-pilots...
  • the cooperation of a form of the stepped element with a complementary form of the mounting structure and a complementary form of the window press includes, for example, an interlocking and/or a stop.
  • said blocking of the stepped element and of the laminated glazing in the plane thereof is additionally achieved by bolting the window press to the mounting structure through the stepped element having a through hole for this purpose.
  • the stepped element covers a peripheral part of the first intermediate adhesive layer overflowing from the first sheet of glass, and of thickness equal to part or all of the thickness of the first intermediate adhesive layer.
  • the overhang of the first intermediate adhesive layer with respect to the first sheet of glass can therefore concern a fraction or the entire thickness of this layer.
  • the laminated glazing comprises at least a third sheet of glass connected to the second sheet of glass by a second intermediate adhesive layer; as will be seen next, the third sheet of glass can be a structural sheet.
  • the stepped element extends within the first and/or the second intermediate adhesive layer, so as to be integral with it. This characteristic achieves an anchoring of the stepped element in the laminated structure, and participates in the realization of a blocking, a stop of the laminated glazing in the direction of its main plane, by cooperating with the connection described above. between the stepped element on the one hand, and the assembly of the assembly structure and the ice-presser on the other hand, by complementary shapes and possibly bolting.
  • the peripheral part of the laminated glazing located between the face of the stepped element opposite the ice press and the main face of the laminated glazing opposite to that formed by the first sheet of glass is covered by a gasket.
  • a gasket airtightness and watertightness, and protection against solar radiation and fluids.
  • It is a peripheral seal made of elastomeric polymer material, in particular injectable or implemented by extrusion, such as silicone, polyurethane (PU), polysulphide elastomer.
  • the joint contact of the gasket and the step element is completely airtight and watertight.
  • the stepped element is covered by a drop which provides the laminated glazing with aerodynamic continuity between the glazing and the mounting structure such as an aircraft structure and good inertia for treatment fluids such as aeronautical fluids, cleaning products , degreaser, glycol for ground de-icing and the like.
  • the first sheet of glass is made of mineral glass with a thickness of between 0.5 and 5, preferably between 2 and 4 mm, or of a polymer material such as poly(methyl methacrylate) (PMMA) d thickness between 0.5 and 5 mm.
  • PMMA poly(methyl methacrylate)
  • a mineral glass designates here for example a soda-lime, aluminosilicate, borosilicate glass, optionally hardened, thermally toughened, or chemically reinforced.
  • Other transparent polymer materials than PMMA can be used, in particular polycarbonate (PC), poly(ethylene terephthalate) (PET) or polyurethane (PU).
  • the first sheet of glass is made of a polymer material such as PC
  • its free surface is advantageously provided with an anti-scratch coating or varnish of the polysiloxane type, hydrophilic, hydrophobic, etc.
  • the second sheet of glass, and if necessary the third sheet of glass, or even the following ones are made of mineral glass with a thickness of between 4 and 10 mm, or of a polymer material such as poly(methyl methacrylate ) (PMMA) with a thickness of between 5 and 30, preferably at most 20 mm.
  • PMMA poly(methyl methacrylate )
  • the intermediate adhesive layers are made of thermoplastic polyurethane (TPU), polyvinyl butyral (PVB), ethylene-vinyl acetate copolymer (EVA), ionomer resin, casting resin, the thickness of the first intermediate adhesive layer is between 3 and 10, preferably 4 and 8 mm, and the thickness of the second intermediate adhesive layer and, where appropriate, of the subsequent layers is between 0.5 and 4, preferably at most equal to 2 mm.
  • TPU thermoplastic polyurethane
  • PVB polyvinyl butyral
  • EVA ethylene-vinyl acetate copolymer
  • ionomer resin casting resin
  • the thickness of the first intermediate adhesive layer is between 3 and 10, preferably 4 and 8 mm
  • the thickness of the second intermediate adhesive layer and, where appropriate, of the subsequent layers is between 0.5 and 4, preferably at most equal to 2 mm.
  • Another object of the invention consists in the application of a laminated glazing as described above to a pinched glazing, of the aeronautical type (cockpit and window) for pressurized or non-pressurized aircraft with fixed or rotary wing, railway , armored vehicle, or boat (wheelhouse, porthole). Mention is made of a cockpit glazing of a long or medium-haul commercial aircraft.
  • FIG. 1 is a schematic cross-sectional representation of an example of laminated glazing mounted by pinching in a commercial aircraft cockpit window, known at the time of the realization of the present invention
  • FIG. 2 schematically represents in section a first variant of the laminated glazing of the invention
  • FIG. 3 schematically shows in section only the bolting of the window presser to the mounting structure through the stepped element
  • FIG. 4 schematically represents in section a second variant of the laminated glazing of the invention
  • FIG. 5 schematically shows in section a third variant of the laminated glazing of the invention
  • FIG. 6 schematically represents in section a fourth variant of the laminated glazing of the invention.
  • a laminated glazing of the prior art comprises a first sheet of glass 1 constituting an outer face of the glazing, 3 mm thick, bonded to a second sheet of glass 3 8 mm thick. thickness by a first intermediate adhesive layer 2 of polyurethane (PU) 5.76 mm thick.
  • PU polyurethane
  • a third sheet of glass 5 8 mm thick is glued to the second 3 by a second intermediate adhesive layer 4 of polyvinyl butyral (PVB) 2 mm thick.
  • PVB polyvinyl butyral
  • edges of the second and third glass sheets 3, 5 are optionally protected from shocks by sheets of relatively hard elastomer, not shown.
  • the edge of the first sheet of glass 1 is set back from that of the second 3, a peripheral part of the free surface of the first sheet of glass 1, the edge of the latter 1, the edge of the first intermediate adhesive layer 2 and a part of the surface of the second sheet of glass 3 overflowing from the first sheet of glass 1 describing a continuous stepped contour which is covered by a stepped element 6 made of conductive metal.
  • the metal element in step 6 is connected to ground.
  • Said continuous stepped contour is covered by the stepped element 6 with the interposition of a thickness of 100 ⁇ m of polysulphide glue, not shown.
  • the stepped element 6 is covered by a seal 7 for airtightness and watertightness, made of silicone, and if necessary by a drop of polysulphide, not shown, which provides the laminated glazing with aerodynamic continuity.
  • a seal 7 for airtightness and watertightness made of silicone, and if necessary by a drop of polysulphide, not shown, which provides the laminated glazing with aerodynamic continuity.
  • glazing and mounting structure such as aircraft structure and good inertness to process fluids such as aeronautical fluids, cleaning products, degreaser, glycol for ground de-icing and the like.
  • the outer surface of the silicone gasket 7 has sealing lips 71 .
  • a shim of thickness 70 (or stiffening) in material harder than the silicone is inserted so as to ensure that the laminated glazing is properly held in its mounting position, by exerting a certain pressure, such as by pinching.
  • the 70 shim is solid, but may include recesses.
  • the face of the glass sheet 1 facing the inside of the laminated structure carries a heating layer, consisting of indium oxide doped with tin (ITO in English for Indium Tin Oxide) or equivalent such as gold, silver multilayer, ZnO:Al, SnO2:F, etc.
  • the heating layer is effective in defrosting the outer surface of the glass sheet 1 .
  • the laminated glazing is fixed to the cabin 10 of the commercial aircraft by means of a window presser 20 (or rapplique) bolted to the cabin 10, and which presses on the overhang of the second sheet of glass 3 with respect to the first 1, support exerted via the stepped element 6 and the seal 7 made of silicone, of which, in particular, the lips 71 ensure the seal between the rapplique 20 and the seal 7 in silicone.
  • a window presser 20 or rapplique
  • the stepped element 6 extends to the contact surface between the ice press 20 and the mounting structure 10.
  • the stepped element 6 has a rectangular profile 61 capable of fitting into the complementary profile 11 presented by the structure 10, and a complementary profile presented by the window press 20.
  • the latter 20 is glued or bolted to the aircraft structure 10.
  • the laminated glazing has a “full fail safe” function: in the event of breakage of the two structural plies 3 and 5, the mounting system described is capable of holding the glazing in place in its opening.
  • the stepped element 6 provides a complete seal against air and water, making it possible to eliminate the silicone seal 7 between the stepped element 6 and the ice press 20.
  • the assembly structure is thus thinned and lightened, and the positioning of the laminated glazing is more precise.
  • the silicone seal 7 has sealing lips 72 vis-à-vis the structure 10 of assembly.
  • a filler seal 8 in two-component polysulphide mastic is interposed between the ice press 20 (or ice clamp) and the stepped element 6 (Zed).
  • This seal (8) is capable of providing aerodynamic continuity.
  • the ice press 20 is bolted to the mounting structure 10 through the stepped element 6 provided for this purpose with a through hole.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Laminated Bodies (AREA)
  • Securing Of Glass Panes Or The Like (AREA)

Abstract

The invention relates to a laminated glazing comprising a first outer glass sheet (1) and a second sheet (3), an adhesive layer (2), the edge of the sheet (1) being set back with respect to that of the sheet (3), a portion of the free surface and the edge face of the sheet (1), 0 to 100% of the edge face of the layer (2) and a portion of the surface of the sheet (3) or of the layer (2), projecting beyond the sheet (1), describing a contour covered by an element (6), the glazing being fastened to the structure (10) by a window retainer (20), the element (6) extending between the window retainer (20) and the structure (10) so as to constitute blocking of the element (6) and of the glazing in the plane thereof; and the application of this glazing to an aeronautical clamped glazing.

Description

Description Description

Titre de l'invention : Vitrage feuilleté à élément de blocage en gradin Title of the invention: Laminated glazing with stepped blocking element

[0001 ] Cette demande concerne les vitrages pincés, soumis à des différentiels de pressions entre les deux faces du vitrage, tels que des vitrages de véhicule aérien pressurisé. [0001] This application relates to pinched glazing, subject to pressure differentials between the two faces of the glazing, such as pressurized air vehicle glazing.

[0002] La périphérie des vitrages pincés (clampés) est traditionnellement réalisée par surmoulage d’un joint (silicone), encapsulant l’ensemble des constituants du vitrage. [0002] The periphery of pinched (clamped) glazing is traditionally produced by overmolding a seal (silicone), encapsulating all of the constituents of the glazing.

[0003] Ce joint assure plusieurs fonctions, dont l’étanchéité avec la structure de montage, la protection des feuilles (ou plis) sur le chant et la protection contre l’humidité (prévention du délaminage). [0003] This gasket performs several functions, including sealing with the assembly structure, protection of the sheets (or folds) on the edge and protection against humidity (prevention of delamination).

[0004] Dans la direction normale au plan, le maintien est assuré par le pincement du joint entre le presse-glace (rapplique) et la structure de montage. Dans le plan, les translations sont bloquées dans un sens unique par la mise en butée du vitrage dans la structure de montage. Dans le sens opposé, la rigidité du pare-brise et la butée opposée assurent cette fonction. [0004] In the direction normal to the plane, the maintenance is ensured by the pinching of the joint between the window press (rapplies) and the mounting structure. In the plane, the translations are blocked in a single direction by the abutment of the glazing in the assembly structure. In the opposite direction, the rigidity of the windscreen and the opposite stop perform this function.

[0005] Dans les vitrages connus, le joint assume l’intégralité de la fonction de contact physique avec la structure de montage et avec le presse-glace ; le joint constitue ainsi une séparation intégrale entre le vitrage feuilleté d’une part, la structure de montage et le presse-glace d’autre part. [0005] In known glazing, the gasket assumes the entire function of physical contact with the mounting structure and with the window press; the seal thus constitutes an integral separation between the laminated glazing on the one hand, the mounting structure and the glass press on the other.

[0006] Parmi les exigences fonctionnelles auxquelles doit répondre un vitrage d’aéronef pressurisé, se trouve la résistance à la pression, qui doit être garantie non seulement lorsque le vitrage est intact (cas standard) mais également en cas de casse d’un élément structural du vitrage (cas appelé en anglais «fail safe >>). Par « élément structural du vitrage », on désigne une feuille rigide constitutive du vitrage feuilleté susceptible de constituer à elle seule un vitrage monolithique, d’en assurer la résistance mécanique, en particulier, et ayant un module élastique au moins égal à 1500 MPa par exemple. Il s’agit de feuilles de verre minéral ou de matériau polymère transparent d’épaisseur minimale variant bien entendu selon leur matériau. Une couche adhésive intercalaire entrant dans la composition d’un vitrage feuilleté, n’est par exemple jamais susceptible de présenter un module élastique minimal indiqué précédemment, une résistance mécanique suffisante, et ne peut pas constituer une feuille ou pli structural(e). [0006] Among the functional requirements which a pressurized aircraft glazing must meet, is the resistance to pressure, which must be guaranteed not only when the glazing is intact (standard case) but also in the event of breakage of an element structural glazing (case called "fail safe"). By “structural element of the glazing”, is meant a rigid sheet constituting the laminated glazing capable of constituting on its own a monolithic glazing, of ensuring its mechanical strength, in particular, and having an elastic modulus at least equal to 1500 MPa per example. These are sheets of mineral glass or transparent polymer material with a minimum thickness varying of course according to their material. An intermediate adhesive layer forming part of the composition of a laminated glazing is, for example, never capable of exhibiting a minimum elastic modulus indicated above, a sufficient mechanical strength, and cannot constitute a structural sheet or ply.

[0007] A cela vient parfois s’ajouter une exigence supplémentaire, dite en anglais « double fail safe I full fail safe », correspondant à la résistance à la pression en cas de casse de deux ou tous les éléments structuraux du vitrage. [0007] To this is sometimes added an additional requirement, called in English “double fail safe I full fail safe”, corresponding to the resistance to pressure in the event of breakage of two or all of the structural elements of the glazing.

[0008] Le montage pincé connu actuellement notamment sur les avions commerciaux moyen et long courriers, ne permet pas de répondre à cette exigence de sécurité supplémentaire. En effet la casse des plis verriers conduit à la perte de la rigidité qui, associée à la butée opposée, assurait le maintien en position du pare-brise. L’absence de maintien en position associé à la pression engendre une déflection importante du vitrage allant jusqu’à son déchaussement (et donc sa perte). [0008] The pinched mounting currently known, in particular on medium and long-haul commercial aircraft, does not make it possible to meet this additional safety requirement. In fact, the breakage of the glass folds leads to the loss of rigidity which, associated with the opposite stop, ensured the maintenance in position of the windshield. The lack of holding in position associated with the pressure generates a significant deflection of the glazing leading to its loosening (and therefore its loss).

[0009] L’invention a eu pour but de créer une liaison bidirectionnelle (dans le plan du vitrage et perpendiculairement à celui-ci), indépendante des plis structuraux (verriers...), entre la structure de montage et le vitrage (feuilleté). Le vitrage est ainsi maintenu en place dans son environnement de montage, même en cas de bris d’un pli structural ou de plusieurs, et même de tous. Ce but est donc atteint par l’invention qui, en conséquence, a pour objet un vitrage feuilleté comprenant au moins une première feuille de verre et une seconde feuille de verre collées l’une à l’autre par l’intermédiaire d’une première couche adhésive intercalaire, la première feuille de verre étant destinée à constituer la surface du vitrage feuilleté en contact avec l’atmosphère extérieure, dans lequel le bord de la première feuille de verre est en retrait par rapport à celui de la seconde, une partie périphérique de la surface libre de la première feuille de verre, le chant de cette dernière, de 0 à 100 % du chant de la première couche adhésive intercalaire et une partie périphérique de la surface de la seconde feuille de verre ou de la première couche adhésive intercalaire, en débord par rapport à la première feuille de verre, décrivant un contour continu en gradin qui est recouvert par un élément en gradin avec interposition de colle, le vitrage feuilleté étant fixé à la structure de montage par l’intermédiaire d’un presse-glace qui exerce un appui sur ledit débord par rapport à la première feuille de verre, appui exercé par l’intermédiaire de l’élément en gradin, caractérisé en ce que l’élément en gradin se prolonge jusqu’à la surface de contact entre le presse-glace et la structure, de manière à constituer, en position de montage du vitrage feuilleté, un blocage de l’élément en gradin et du vitrage feuilleté dans le plan de celui-ci, et en ce que ledit blocage de l’élément en gradin et du vitrage feuilleté dans le plan de celui-ci est réalisé par coopération d’une forme de l’élément en gradin avec une forme complémentaire de la structure de montage et une forme complémentaire du presse-glace. [0009] The object of the invention was to create a two-way connection (in the plane of the glazing and perpendicular to it), independent of the structural folds (glaziers, etc.), between the mounting structure and the glazing (laminated ). The glazing is thus held in place in its mounting environment, even in the event of the breakage of one or more structural folds, and even of all of them. This object is therefore achieved by the invention which, consequently, relates to a laminated glazing comprising at least a first sheet of glass and a second sheet of glass bonded to each other by means of a first intermediate adhesive layer, the first sheet of glass being intended to form the surface of the laminated glazing in contact with the outside atmosphere, in which the edge of the first sheet of glass is recessed with respect to that of the second, a peripheral part of the free surface of the first sheet of glass, the edge of the latter, from 0 to 100% of the edge of the first intermediate adhesive layer and a peripheral part of the surface of the second glass sheet or of the first intermediate adhesive layer , projecting with respect to the first sheet of glass, describing a continuous stepped contour which is covered by a stepped element with the interposition of glue, the laminated glazing being fixed to the mounting structure by means of a press- crystal which exerts a support on said overhang relative to the first sheet of glass, support exerted via the element stepped, characterized in that the stepped element extends as far as the contact surface between the window press and the structure, so as to constitute, in the mounting position of the laminated glazing, a blocking of the step and of the laminated glazing in the plane of the latter, and in that the said blocking of the stepped element and of the laminated glazing in the plane of the latter is carried out by cooperation of a shape of the stepped element with a complementary shape of the mounting structure and a complementary shape of the ice press.

[0010] La forme de l’élément en gradin, en particulier ses parties en contact avec la partie périphérique de la surface libre de la première feuille de verre et avec le débord du vitrage feuilleté par rapport à cette première feuille de verre, sont aptes à bloquer le vitrage feuilleté dans la direction perpendiculaire à son plan principal. Les parties de l’élément en gradin qui sont en contact avec le chant de la première feuille de verre et avec 0 à 100 % du chant de la première couche adhésive intercalaire, et le prolongement de l’élément en gradin entre le presse-glace et la structure, sont aptes à bloquer le vitrage feuilleté dans la direction de son plan principal ; une liaison entre l’élément en gradin d’une part, le presse-glace et la structure de montage d’autre part, est réalisée par ledit prolongement de l’élément en gradin, comme il sera vu plus en détails ci-dessous. [0010] The shape of the stepped element, in particular its parts in contact with the peripheral part of the free surface of the first sheet of glass and with the overhang of the laminated glazing with respect to this first sheet of glass, are suitable blocking the laminated glazing in the direction perpendicular to its principal plane. The parts of the stepped element which are in contact with the edge of the first sheet of glass and with 0 to 100% of the edge of the first intermediate adhesive layer, and the extension of the stepped element between the and the structure, are able to block the laminated glazing in the direction of its main plane; a connection between the stepped element on the one hand, the ice-presser and the mounting structure on the other hand, is achieved by said extension of the stepped element, as will be seen in more detail below.

[0011 ] La constitution de la première et de la seconde feuilles de verre sera vue en détails ci-dessous. Généralement, la première feuille de verre est une feuille fine de protection non structurale, c’est-à-dire ne procurant pas la résistance mécanique requise pour un vitrage monolithique par exemple, et sa face principale interne à la structure feuilletée porte un réseau de fils ou une couche mince telle que d’oxyde d’indium dopé à l’étain (en anglais Indium Tin Oxide - ITO -), d’argent, d’or ou équivalent, électroconduct(eurs)(rice) antigivre / de dégivrage. La seconde feuille de verre est structurale, souvent feuilletée du côté opposé à la première feuille de verre à une ou plusieurs autres feuilles structurales, de sorte à constituer ensemble le bloc structural du vitrage feuilleté. [0011] The constitution of the first and second sheets of glass will be seen in detail below. Generally, the first sheet of glass is a thin sheet of non-structural protection, that is to say not providing the mechanical resistance required for monolithic glazing for example, and its main face internal to the laminated structure carries a network of wires or a thin layer such as indium oxide doped with tin (Indium Tin Oxide - ITO -), silver, gold or equivalent, anti-icing / de-icing electrical conductors . The second sheet of glass is structural, often laminated on the side opposite the first sheet of glass to one or more other structural sheets, so as to constitute together the structural block of the laminated glazing.

[0012] L’élément en gradin, éventuellement appelé « Zed » lorsque son profil est celui de la lettre z, constitue une barrière d’étanchéité, il a pour fonction d’empêcher toute humidité de pénétrer dans le vitrage feuilleté. Il est métallique (aluminium, inox...), en matériau polymère ou composite. Du fait que l’élément en gradin se prolonge entre le presse-glace et la structure, il est possible grâce à l’invention de supprimer le joint injecté qui sera décrit en détails ci-dessous, entre le presse-glace (rapplique) et l’élément en gradin (« Zed >>), car ce dernier garantit une étanchéité complète de la jonction du vitrage feuilleté et de la structure de montage vis-à-vis de l’atmosphère extérieure. Cette suppression localement du joint injecté (élastomère, tel que silicone) procure un gain d’épaisseur donc de masse de l’ensemble, et un positionnement plus précis du vitrage (suppression de matériau déformable, notamment par compression -écrasement-). [0012] The stepped element, optionally called "Zed" when its profile is that of the letter z, constitutes a sealing barrier, its function is to prevent any humidity from penetrating into the laminated glazing. It is metallic (aluminum, stainless steel, etc.), in polymer or composite material. Because the stepped element extends between the window presser and the structure, it is possible thanks to the invention to eliminate the injected seal which will be described in detail below, between the window presser (rapplique) and the stepped element ("Zed >>), because the latter guarantees complete sealing of the junction of the laminated glazing and the assembly structure vis-à-vis the outside atmosphere. This local removal of the injected seal (elastomer, such as silicone) provides a gain in thickness and therefore in mass of the assembly, and a more precise positioning of the glazing (removal of deformable material, in particular by compression -crushing-).

[0013] Outre la fonction « full fail safe » expliquée précédemment, l’invention procure également une continuité électrique simplifiée vers la masse avion pour une couche anti-statique, résolution (suppression) de décharges électrostatiques bruyantes appelées en anglais « clicking noise» gênant de manière connue les pilotes, co-pilotes... [0013] In addition to the "full fail safe" function explained above, the invention also provides simplified electrical continuity to the aircraft ground for an anti-static layer, resolution (elimination) of noisy electrostatic discharges called in English annoying "clicking noise". in a known way the pilots, co-pilots...

[0014] , La coopération d’une forme de l’élément en gradin avec une forme complémentaire de la structure de montage et une forme complémentaire du presse-glace comporte par exemple un emboîtement et/ou un arrêt. [0014] The cooperation of a form of the stepped element with a complementary form of the mounting structure and a complementary form of the window press includes, for example, an interlocking and/or a stop.

[0015] Dans une réalisation préférée, ledit blocage de l’élément en gradin et du vitrage feuilleté dans le plan de celui-ci est réalisé additionnellement par boulonnage du presse-glace à la structure de montage à travers l’élément en gradin présentant un trou traversant à cet effet. [0015] In a preferred embodiment, said blocking of the stepped element and of the laminated glazing in the plane thereof is additionally achieved by bolting the window press to the mounting structure through the stepped element having a through hole for this purpose.

[0016] Selon une variante de l’invention, l’élément en gradin recouvre une partie périphérique de la première couche adhésive intercalaire débordant de la première feuille de verre, et d’épaisseur égale à une partie ou la totalité de l’épaisseur de la première couche adhésive intercalaire. Dans ce cas, le débord de la première couche adhésive intercalaire par rapport à la première feuille de verre peut donc concerner une fraction ou toute l’épaisseur de cette couche. According to a variant of the invention, the stepped element covers a peripheral part of the first intermediate adhesive layer overflowing from the first sheet of glass, and of thickness equal to part or all of the thickness of the first intermediate adhesive layer. In this case, the overhang of the first intermediate adhesive layer with respect to the first sheet of glass can therefore concern a fraction or the entire thickness of this layer.

[0017] De préférence, le vitrage feuilleté comprend au moins une troisième feuille de verre reliée à la seconde feuille de verre par une seconde couche adhésive intercalaire ; comme il sera vu ensuite, la troisième feuille de verre peut être une feuille structurale. [0018] De préférence, l’élément en gradin se prolonge au sein de la première et/ou de la seconde couche adhésive intercalaire, de manière à en être solidaire. Cette caractéristique réalise un ancrage de l’élément en gradin dans la structure feuilletée, et participe à la réalisation d’un blocage, d’un arrêt du vitrage feuilleté dans la direction de son plan principal, en coopérant avec la liaison décrite ci- dessus entre l’élément en gradin d’une part, et l’ensemble de la structure de montage et du presse-glace d’autre part, par formes complémentaires et éventuellement boulonnage. [0017] Preferably, the laminated glazing comprises at least a third sheet of glass connected to the second sheet of glass by a second intermediate adhesive layer; as will be seen next, the third sheet of glass can be a structural sheet. [0018] Preferably, the stepped element extends within the first and/or the second intermediate adhesive layer, so as to be integral with it. This characteristic achieves an anchoring of the stepped element in the laminated structure, and participates in the realization of a blocking, a stop of the laminated glazing in the direction of its main plane, by cooperating with the connection described above. between the stepped element on the one hand, and the assembly of the assembly structure and the ice-presser on the other hand, by complementary shapes and possibly bolting.

[0019] De préférence, la partie périphérique du vitrage feuilleté située entre la face de l’élément en gradin opposée au presse-glace et la face principale du vitrage feuilleté opposée à celle constituée par la première feuille de verre, est recouverte par un joint d’étanchéité à l’air et à l’eau, et de protection au rayonnement solaire et aux fluides. Il s’agit d’un joint périphérique en matériau polymère élastomère, notamment injectable ou mis en œuvre par extrusion, tel qu’en silicone, polyuréthane (PU), élastomère à polysulfure. Le contactjointif du joint d’étanchéité et de l’élément en gradin est complètement étanche à l’air et à l’eau. [0019] Preferably, the peripheral part of the laminated glazing located between the face of the stepped element opposite the ice press and the main face of the laminated glazing opposite to that formed by the first sheet of glass, is covered by a gasket. airtightness and watertightness, and protection against solar radiation and fluids. It is a peripheral seal made of elastomeric polymer material, in particular injectable or implemented by extrusion, such as silicone, polyurethane (PU), polysulphide elastomer. The joint contact of the gasket and the step element is completely airtight and watertight.

[0020] De préférence, l’élément en gradin est recouvert par une goutte qui procure au vitrage feuilleté une continuité aérodynamique entre vitrage et structure de montage telle que structure avion et une bonne inertie aux fluides de traitement tels que fluides aéronautiques, produits de nettoyage, dégraissant, glycol pour le dégivrage au sol et similaires. [0020] Preferably, the stepped element is covered by a drop which provides the laminated glazing with aerodynamic continuity between the glazing and the mounting structure such as an aircraft structure and good inertia for treatment fluids such as aeronautical fluids, cleaning products , degreaser, glycol for ground de-icing and the like.

[0021 ] De préférence, la première feuille de verre est en verre minéral d’épaisseur comprise entre 0,5 et 5, de préférence entre 2 et 4 mm, ou en matériau polymère tel que poly(méthacrylate de méthyle) (PMMA) d’épaisseur comprise entre 0,5 et 5 mm. C’est une feuille de protection non structurale du bloc structural sous-jacent. Un verre minéral désigne ici par exemple un verre sodocalcique, aluminosilicate, borosilicate, éventuellement durci, trempé thermiquement, ou renforcé chimiquement. D’autres matériaux polymères transparents que le PMMA peuvent être employés, notamment polycarbonate (PC), poly(téréphtalate d’éthylène) (PET) ou polyuréthane (PU). Quand la première feuille de verre est en matériau polymère tel que PC, sa surface libre est avantageusement munie d’un revêtement ou vernis anti-rayure de type polysiloxane, hydrophile, hydrophobe... [0022] De préférence, la seconde feuille de verre, et le cas échéant la troisième feuille de verre, voire les suivantes sont en verre minéral d’épaisseur comprise entre 4 et 10 mm, ou en matériau polymère tel que poly(méthacrylate de méthyle) (PMMA) d’épaisseur comprise entre 5 et 30, de préférence au plus 20 mm. Ce sont des feuilles structurales ou plis structuraux. [0021] Preferably, the first sheet of glass is made of mineral glass with a thickness of between 0.5 and 5, preferably between 2 and 4 mm, or of a polymer material such as poly(methyl methacrylate) (PMMA) d thickness between 0.5 and 5 mm. It is a non-structural protection sheet of the underlying structural block. A mineral glass designates here for example a soda-lime, aluminosilicate, borosilicate glass, optionally hardened, thermally toughened, or chemically reinforced. Other transparent polymer materials than PMMA can be used, in particular polycarbonate (PC), poly(ethylene terephthalate) (PET) or polyurethane (PU). When the first sheet of glass is made of a polymer material such as PC, its free surface is advantageously provided with an anti-scratch coating or varnish of the polysiloxane type, hydrophilic, hydrophobic, etc. [0022] Preferably, the second sheet of glass, and if necessary the third sheet of glass, or even the following ones, are made of mineral glass with a thickness of between 4 and 10 mm, or of a polymer material such as poly(methyl methacrylate ) (PMMA) with a thickness of between 5 and 30, preferably at most 20 mm. These are structural sheets or structural folds.

[0023] De préférence, les couches adhésives intercalaires sont en polyuréthane thermoplastique (TPU), polyvinylbutyral (PVB), copolymère éthylène - acétate de vinyle (EVA), résine ionomère, résine de coulée, l’épaisseur de la première couche adhésive intercalaire est comprise entre 3 et 10, de préférence 4 et 8 mm, et l’épaisseur de la seconde couche adhésive intercalaire et le cas échéant des suivantes est comprise entre 0,5 et 4, de préférence au plus égale à 2 mm. [0023] Preferably, the intermediate adhesive layers are made of thermoplastic polyurethane (TPU), polyvinyl butyral (PVB), ethylene-vinyl acetate copolymer (EVA), ionomer resin, casting resin, the thickness of the first intermediate adhesive layer is between 3 and 10, preferably 4 and 8 mm, and the thickness of the second intermediate adhesive layer and, where appropriate, of the subsequent layers is between 0.5 and 4, preferably at most equal to 2 mm.

[0024] Un autre objet de l’invention consiste en l’application d’un vitrage feuilleté tel que décrit précédemment à un vitrage pincé, de type aéronautique (cockpit et hublot) pour aéronef pressurisé ou non pressurisé à voilure fixe ou tournante, ferroviaire, de véhicule blindé, ou bateau (timonerie, hublot). On cite un vitrage de cockpit d’avion commercial long ou moyen courrier. Another object of the invention consists in the application of a laminated glazing as described above to a pinched glazing, of the aeronautical type (cockpit and window) for pressurized or non-pressurized aircraft with fixed or rotary wing, railway , armored vehicle, or boat (wheelhouse, porthole). Mention is made of a cockpit glazing of a long or medium-haul commercial aircraft.

[0025] L’invention sera mieux comprise à la lumière de la description des dessins en annexe dans lesquels : The invention will be better understood in the light of the description of the attached drawings in which:

[0026] [Fig. 1] est une représentation schématique en coupe d’un exemple de vitrage feuilleté monté par pincement dans une baie de cockpit d’avion commercial, connu au moment de la réalisation de la présente invention ; [0026] [Fig. 1] is a schematic cross-sectional representation of an example of laminated glazing mounted by pinching in a commercial aircraft cockpit window, known at the time of the realization of the present invention;

[0027] [Fig. 2] représente schématiquement en coupe une première variante du vitrage feuilleté de l’invention ; [0027] [Fig. 2] schematically represents in section a first variant of the laminated glazing of the invention;

[0028] [Fig. 3] représente schématiquement en coupe uniquement le boulonnage du presse-glace à la structure de montage à travers l’élément en gradin ; [0028] [Fig. 3] schematically shows in section only the bolting of the window presser to the mounting structure through the stepped element;

[0029] [Fig. 4] représente schématiquement en coupe une deuxième variante du vitrage feuilleté de l’invention ; [0029] [Fig. 4] schematically represents in section a second variant of the laminated glazing of the invention;

[0030] [Fig. 5] représente schématiquement en coupe une troisième variante du vitrage feuilleté de l’invention ; [0031 ] [Fig. 6] représente schématiquement en coupe une quatrième variante du vitrage feuilleté de l’invention. [0030] [Fig. 5] schematically shows in section a third variant of the laminated glazing of the invention; [0031] [Fig. 6] schematically represents in section a fourth variant of the laminated glazing of the invention.

[0032] En référence à la Figure 1 , un vitrage feuilleté de la technique antérieure comprend une première feuille de verre 1 constituant une face extérieure du vitrage, de 3 mm d’épaisseur, collée à une seconde feuille de verre 3 de 8 mm d’épaisseur par une première couche adhésive intercalaire 2 de polyuréthane (PU) de 5,76 mm d’épaisseur. [0032] Referring to Figure 1, a laminated glazing of the prior art comprises a first sheet of glass 1 constituting an outer face of the glazing, 3 mm thick, bonded to a second sheet of glass 3 8 mm thick. thickness by a first intermediate adhesive layer 2 of polyurethane (PU) 5.76 mm thick.

[0033] Une troisième feuille de verre 5 de 8 mm d’épaisseur est collée à la seconde 3 par une seconde couche adhésive intercalaire 4 de polyvinylbutyral (PVB) de 2 mm d’épaisseur. A third sheet of glass 5 8 mm thick is glued to the second 3 by a second intermediate adhesive layer 4 of polyvinyl butyral (PVB) 2 mm thick.

[0034] Les chants de la seconde et de la troisième feuilles de verre 3, 5 sont éventuellement protégés des chocs par des feuilles d’élastomère relativement dur non représentées. [0034] The edges of the second and third glass sheets 3, 5 are optionally protected from shocks by sheets of relatively hard elastomer, not shown.

[0035] Le bord de la première feuille de verre 1 est en retrait par rapport à celui de la seconde 3, une partie périphérique de la surface libre de la première feuille de verre 1 , le chant de cette dernière 1 , le chant de la première couche adhésive intercalaire 2 et une partie de la surface de la seconde feuille de verre 3 débordant de la première feuille de verre 1 décrivant un contour continu en gradin qui est recouvert par un élément en gradin 6 en métal conducteur. L’élément métallique en gradin 6 est relié à la masse. [0035] The edge of the first sheet of glass 1 is set back from that of the second 3, a peripheral part of the free surface of the first sheet of glass 1, the edge of the latter 1, the edge of the first intermediate adhesive layer 2 and a part of the surface of the second sheet of glass 3 overflowing from the first sheet of glass 1 describing a continuous stepped contour which is covered by a stepped element 6 made of conductive metal. The metal element in step 6 is connected to ground.

[0036] Ledit contour continu en gradin est recouvert par l’élément en gradin 6 avec interposition d’une épaisseur de 100 pm de colle en polysulfure non représentée. Said continuous stepped contour is covered by the stepped element 6 with the interposition of a thickness of 100 μm of polysulphide glue, not shown.

[0037] L’élément en gradin 6 est recouvert par un joint 7 d’étanchéité à l’air et à l’eau, en silicone, et le cas échéant par une goutte en polysulfure non représentée qui procure au vitrage feuilleté une continuité aérodynamique entre vitrage et structure de montage telle que structure avion et une bonne inertie aux fluides de traitement tels que fluides aéronautiques, produits de nettoyage, dégraissant, glycol pour le dégivrage au sol et similaires. [0037] The stepped element 6 is covered by a seal 7 for airtightness and watertightness, made of silicone, and if necessary by a drop of polysulphide, not shown, which provides the laminated glazing with aerodynamic continuity. between glazing and mounting structure such as aircraft structure and good inertness to process fluids such as aeronautical fluids, cleaning products, degreaser, glycol for ground de-icing and the like.

[0038] La surface extérieure du joint 7 en silicone présente des lèvres d’étanchéité 71 . [0038] The outer surface of the silicone gasket 7 has sealing lips 71 .

De plus, dans la partie inférieure du joint 7 en silicone, une cale d’épaisseur 70 (ou de rigidification) en matériau plus dur que le silicone est insérée de manière à garantir que le vitrage feuilleté est bien tenu dans sa position de montage, en exerçant une certaine pression, tel que par pincement. La cale d’épaisseur 70 est pleine, mais peut comprendre des évidements. In addition, in the lower part of the seal 7 in silicone, a shim of thickness 70 (or stiffening) in material harder than the silicone is inserted so as to ensure that the laminated glazing is properly held in its mounting position, by exerting a certain pressure, such as by pinching. The 70 shim is solid, but may include recesses.

[0039] La face de la feuille de verre 1 orientée vers l’intérieur de la structure feuilletée porte une couche chauffante, constituée d’oxyde d’indium dopé à l’étain (en anglais ITO pour Indium Tin Oxide) ou équivalent tel qu’or, multicouche à l’argent, ZnO :AI, SnO2 :F... La couche chauffante est efficace pour dégivrer la surface extérieure de la feuille de verre 1 . The face of the glass sheet 1 facing the inside of the laminated structure carries a heating layer, consisting of indium oxide doped with tin (ITO in English for Indium Tin Oxide) or equivalent such as gold, silver multilayer, ZnO:Al, SnO2:F, etc. The heating layer is effective in defrosting the outer surface of the glass sheet 1 .

[0040] Le vitrage feuilleté est fixé à la carlingue 10 de l’avion commercial par l’intermédiaire d’un presse-glace 20 (ou rapplique) boulonnée à la carlingue 10, et qui exerce un appui sur le débord de la seconde feuille de verre 3 par rapport à la première 1 , appui exercé par l’intermédiaire de l’élément en gradin 6 et du joint 7 en silicone dont, en particulier, les lèvres 71 assurent l’étanchéité entre la rapplique 20 et le joint 7 en silicone. [0040] The laminated glazing is fixed to the cabin 10 of the commercial aircraft by means of a window presser 20 (or rapplique) bolted to the cabin 10, and which presses on the overhang of the second sheet of glass 3 with respect to the first 1, support exerted via the stepped element 6 and the seal 7 made of silicone, of which, in particular, the lips 71 ensure the seal between the rapplique 20 and the seal 7 in silicone.

[0041 ] En référence à la Figure 2, l’élément en gradin 6 se prolonge jusqu’à la surface de contact entre le presse-glace 20 et la structure 10 de montage. L’élément en gradin 6 présente un profil rectangulaire 61 apte à s’emboîter dans le profil complémentaire 11 présenté par la structure 10, et un profil complémentaire présenté par le presse-glace 20. Ce dernier 20 est collé ou boulonné à la structure avion 10. Dans cette configuration, le vitrage feuilleté présente une fonction « full fail safe » : en cas de bris des deux plis structuraux 3 et 5, le système de montage décrit est capable de maintenir le vitrage en place dans sa baie. [0041] With reference to Figure 2, the stepped element 6 extends to the contact surface between the ice press 20 and the mounting structure 10. The stepped element 6 has a rectangular profile 61 capable of fitting into the complementary profile 11 presented by the structure 10, and a complementary profile presented by the window press 20. The latter 20 is glued or bolted to the aircraft structure 10. In this configuration, the laminated glazing has a “full fail safe” function: in the event of breakage of the two structural plies 3 and 5, the mounting system described is capable of holding the glazing in place in its opening.

[0042] D’autre part, l’élément en gradin 6 procure une étanchéité complète à l’air et à l’eau, permettant de supprimer le joint en silicone 7 entre l’élément en gradin 6 et le presse-glace 20. La structure de montage est ainsi amincie et allégée, et le positionnement du vitrage feuilleté est plus précis. [0042] On the other hand, the stepped element 6 provides a complete seal against air and water, making it possible to eliminate the silicone seal 7 between the stepped element 6 and the ice press 20. The assembly structure is thus thinned and lightened, and the positioning of the laminated glazing is more precise.

[0043] Le joint en silicone 7 présente des lèvres d’étanchéité 72 vis-à-vis de la structure 10 de montage. The silicone seal 7 has sealing lips 72 vis-à-vis the structure 10 of assembly.

[0044] Un joint de comblement 8 en mastic polysulfure bi-composant est intercalé entre le presse-glace 20 (ou pince glace) et l’élément en gradin 6 (Zed). Ce joint (8) est apte à procurer une continuité aérodynamique. [0045] En référence à la Figure 3, le presse-glace 20 est boulonné à la structure 10 de montage à travers l’élément en gradin 6 muni à cet effet d’un trou traversant. A filler seal 8 in two-component polysulphide mastic is interposed between the ice press 20 (or ice clamp) and the stepped element 6 (Zed). This seal (8) is capable of providing aerodynamic continuity. Referring to Figure 3, the ice press 20 is bolted to the mounting structure 10 through the stepped element 6 provided for this purpose with a through hole.

[0046] En référence à la Figure 4, une partie seulement de l’épaisseur de la première couche adhésive intercalaire 2 déborde de la première feuille de verre 1 . L’élément en gradin 6 est en contact jointif avec ce débord de la première couche adhésive intercalaire 2. [0046] Referring to Figure 4, only part of the thickness of the first intermediate adhesive layer 2 overflows the first glass sheet 1. The stepped element 6 is in contiguous contact with this overhang of the first intermediate adhesive layer 2.

[0047] En référence à la Figure 5, l’élément en gradin 6 présente un profilé triangulaire 62 complémentaire d’un profilé triangulaire 12 de la structure de montage et d’un profilé triangulaire du presse-glace 20. [0048] En référence à la Figure 6, l’élément en gradin se prolonge 63 en recouvrant le chant de la seconde feuille de verre 3, et au sein de la première couche adhésive intercalaire 2 et de la seconde couche adhésive intercalaire 4, en ancrages 64. [0047] Referring to Figure 5, the stepped element 6 has a triangular profile 62 complementary to a triangular profile 12 of the mounting structure and a triangular profile of the window press 20. [0048] With reference in Figure 6, the stepped element extends 63 covering the edge of the second sheet of glass 3, and within the first intermediate adhesive layer 2 and the second intermediate adhesive layer 4, in anchors 64.

Claims

Revendications Claims [Revendication 1 ] Vitrage feuilleté comprenant au moins une première feuille de verre (1 ) et une seconde feuille de verre (3) collées l’une à l’autre par l’intermédiaire d’une première couche adhésive intercalaire (2), la première feuille de verre (1 ) étant destinée à constituer la surface du vitrage feuilleté en contact avec l’atmosphère extérieure, dans lequel le bord de la première feuille de verre (1 ) est en retrait par rapport à celui de la seconde (3), une partie périphérique de la surface libre de la première feuille de verre (1 ), le chant de cette dernière (1 ), de 0 à 100 % du chant de la première couche adhésive intercalaire (2) et une partie périphérique de la surface de la seconde feuille de verre (3) ou de la première couche adhésive intercalaire (2), en débord par rapport à la première feuille de verre (1 ), décrivant un contour continu en gradin qui est recouvert par un élément en gradin (6) avec interposition de colle, le vitrage feuilleté étant fixé à la structure (10) de montage par l’intermédiaire d’un presse-glace (20) qui exerce un appui sur ledit débord par rapport à la première feuille de verre (1 ), appui exercé par l’intermédiaire de l’élément en gradin (6), caractérisé en ce que l’élément en gradin (6) se prolonge jusqu’à la surface de contact entre le presse-glace (20) et la structure (10), de manière à constituer, en position de montage du vitrage feuilleté, un blocage de l’élément en gradin (6) et du vitrage feuilleté dans le plan de celui-ci, et en ce que ledit blocage de l’élément en gradin (6) et du vitrage feuilleté dans le plan de celui-ci est réalisé par coopération d’une forme (61 , 62) de l’élément en gradin (6) avec une forme complémentaire (1 1 , 12) de la structure (10) de montage et une forme complémentaire du presse-glace (20). [Claim 1] Laminated glazing comprising at least a first sheet of glass (1) and a second sheet of glass (3) bonded to each other via a first intermediate adhesive layer (2), the first sheet of glass (1) being intended to constitute the surface of the laminated glazing in contact with the external atmosphere, in which the edge of the first sheet of glass (1) is recessed with respect to that of the second (3) , a peripheral part of the free surface of the first sheet of glass (1), the edge of the latter (1), from 0 to 100% of the edge of the first intermediate adhesive layer (2) and a peripheral part of the surface of the second sheet of glass (3) or of the first intermediate adhesive layer (2), projecting from the first sheet of glass (1), describing a continuous stepped contour which is covered by a stepped element (6 ) with the interposition of glue, the laminated glazing being fixed to the assembly structure (10) by means of a glass press (20) which exerts a support on said overhang relative to the first sheet of glass (1) , support exerted via the stepped element (6), characterized in that the stepped element (6) extends as far as the contact surface between the window presser (20) and the structure ( 10), so as to constitute, in the mounting position of the laminated glazing, a blocking of the stepped element (6) and of the laminated glazing in the plane thereof, and in that said blocking of the element in step (6) and laminated glazing in the plane of the latter is produced by cooperating a shape (61, 62) of the stepped element (6) with a complementary shape (1 1, 12) of the structure (10) mounting and a complementary shape of the ice press (20). [Revendication 2] Vitrage feuilleté selon la revendication précédente, caractérisé en ce que ledit blocage de l’élément en gradin (6) et du vitrage feuilleté dans le plan de celui-ci est réalisé par boulonnage (30) du presse- glace (20) à la structure (10) de montage à travers l’élément en gradin (6) présentant un trou traversant à cet effet. [Claim 2] Laminated glazing according to the preceding claim, characterized in that the said blocking of the stepped element (6) and of the laminated glazing in the plane of the latter is produced by bolting (30) of the ice-press (20 ) to the mounting structure (10) through the stepped element (6) having a through hole for this purpose. [Revendication 3] Vitrage feuilleté selon l’une des revendications précédentes, caractérisé en ce que l’élément en gradin (6) recouvre une partie périphérique de la première couche adhésive intercalaire (2) débordant de la première feuille de verre (1 ), et d’épaisseur égale à une partie ou la totalité de l’épaisseur de la première couche adhésive intercalaire (2). [Claim 3] Laminated glazing according to one of the preceding claims, characterized in that the stepped element (6) covers a peripheral part of the first intermediate adhesive layer (2) projecting from the first sheet of glass (1), and of thickness equal to part or all of the thickness of the first intermediate adhesive layer (2). [Revendication 4] Vitrage feuilleté selon l’une des revendications précédentes, caractérisé en ce qu’il comprend au moins une troisième feuille de verre (5) reliée à la seconde feuille de verre (3) par une seconde couche adhésive intercalaire (4). [Claim 4] Laminated glazing according to one of the preceding claims, characterized in that it comprises at least a third sheet of glass (5) connected to the second sheet of glass (3) by a second intermediate adhesive layer (4) . [Revendication 5] Vitrage feuilleté selon la revendication 4, caractérisé en ce que l’élément en gradin (6) se prolonge au sein de la première (2) et/ou de la seconde (4) couche adhésive intercalaire, de manière à en être solidaire.[Claim 5] Laminated glazing according to Claim 4, characterized in that the stepped element (6) extends within the first (2) and/or the second (4) intermediate adhesive layer, so as to be united. [Revendication 6] Vitrage feuilleté selon l’une des revendications précédentes, caractérisé en ce que la partie périphérique du vitrage feuilleté située entre la face de l’élément en gradin (6) opposée au presse-glace (20) et la face principale du vitrage feuilleté opposée à celle constituée par la première feuille de verre (1 ), est recouverte par un joint (7) d’étanchéité à l’air et à l’eau, et de protection au rayonnement solaire et aux fluides. [Claim 6] Laminated glazing according to one of the preceding claims, characterized in that the peripheral part of the laminated glazing located between the face of the stepped element (6) opposite the glass press (20) and the main face of the laminated glazing opposite to that constituted by the first sheet of glass (1), is covered by a gasket (7) for airtightness and watertightness, and protection against solar radiation and fluids. [Revendication 7] Vitrage feuilleté selon l’une des revendications précédentes, caractérisé en ce que la première feuille de verre (1 ) est en verre minéral d’épaisseur comprise entre 0,5 et 5, de préférence entre 2 et 4 mm, ou en matériau polymère tel que poly(méthacrylate de méthyle) (PMMA) d’épaisseur comprise entre 0,5 et 5 mm. [Claim 7] Laminated glazing according to one of the preceding claims, characterized in that the first sheet of glass (1) is made of mineral glass with a thickness of between 0.5 and 5, preferably between 2 and 4 mm, or made of polymeric material such as poly(methyl methacrylate) (PMMA) with a thickness of between 0.5 and 5 mm. [Revendication 8] Vitrage feuilleté selon l’une des revendications précédentes prise en combinaison avec la revendication 4, caractérisé en ce que la seconde feuille de verre (3), et le cas échéant la troisième feuille de verre (5), voire les suivantes sont en verre minéral d’épaisseur comprise entre 4 et 10 mm, ou en matériau polymère tel que poly(méthacrylate de méthyle) (PMMA) d’épaisseur comprise entre 5 et 30, de préférence au plus 20 mm.[Claim 8] Laminated glazing according to one of the preceding claims taken in combination with Claim 4, characterized in that the second sheet of glass (3), and if necessary the third sheet of glass (5), or even the following are made of mineral glass with a thickness of between 4 and 10 mm, or of a polymer material such as poly(methyl methacrylate) (PMMA) with a thickness of between 5 and 30, preferably at most 20 mm. [Revendication 9] Vitrage feuilleté selon l’une des revendications précédentes prise en combinaison avec la revendication 4, caractérisé en ce que les couches adhésives intercalaires (2 ; 4) sont en polyuréthane thermoplastique (TPU), polyvinylbutyral (PVB), copolymère éthylène - acétate de vinyle (EVA), résine ionomère, résine de coulée, en ce que l’épaisseur de la première couche adhésive intercalaire (2) est comprise entre 3 et 10, de préférence 4 et 8 mm, et en ce que l’épaisseur de la seconde couche adhésive intercalaire (4) et le cas échéant des suivantes est comprise entre 0,5 et 4, de préférence au plus égale à 2 mm. [Revendication 10] Application d’un vitrage feuilleté selon l’une des revendications précédentes à un vitrage pincé, de type aéronautique (cockpit et hublot) pour aéronef pressurisé ou non pressurisé à voilure fixe ou tournante, ferroviaire, de véhicule blindé, ou bateau (timonerie, hublot). [Claim 9] Laminated glazing according to one of the preceding claims taken in combination with Claim 4, characterized in that the intermediate adhesive layers (2; 4) are made of thermoplastic polyurethane (TPU), polyvinyl butyral (PVB), ethylene copolymer - vinyl acetate (EVA), ionomer resin, casting resin, in that the thickness of the first intermediate adhesive layer (2) is between 3 and 10, preferably 4 and 8 mm, and in that the thickness of the second intermediate adhesive layer (4) and, where applicable, of the following ones is between 0.5 and 4, preferably at most equal to 2 mm. [Claim 10] Application of a laminated glazing according to one of the preceding claims to a pinched glazing, of the aeronautical type (cockpit and window) for pressurized or non-pressurized aircraft with fixed or rotary wings, railway, armored vehicle, or boat (wheelhouse, porthole).
EP22834682.1A 2021-11-29 2022-11-16 Laminated glazing with stepped blocking element Pending EP4440830A1 (en)

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FR2112662A FR3129624B1 (en) 2021-11-29 2021-11-29 Laminated glazing with stepped blocking element
PCT/FR2022/052097 WO2023094746A1 (en) 2021-11-29 2022-11-16 Laminated glazing with stepped blocking element

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JP5492647B2 (en) * 2010-04-19 2014-05-14 三菱航空機株式会社 Aircraft cockpit window with electromagnetic shield, aircraft
FR3068856B1 (en) * 2017-07-06 2021-10-29 Saint Gobain SUPPRESSION OF ELECTROSTATIC DISCHARGE NOISE BY CONDUCTION BETWEEN A STEEL METAL ELEMENT AND THE ELECTRICAL NETWORK OF A GLASS

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FR3129624A1 (en) 2023-06-02
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US20250018686A1 (en) 2025-01-16

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