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WO2003068501A9 - Structure de vitrage anti-ecaillage - Google Patents

Structure de vitrage anti-ecaillage

Info

Publication number
WO2003068501A9
WO2003068501A9 PCT/US2003/004234 US0304234W WO03068501A9 WO 2003068501 A9 WO2003068501 A9 WO 2003068501A9 US 0304234 W US0304234 W US 0304234W WO 03068501 A9 WO03068501 A9 WO 03068501A9
Authority
WO
WIPO (PCT)
Prior art keywords
construction
accordance
glazing
glass
ballistic
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.)
Ceased
Application number
PCT/US2003/004234
Other languages
English (en)
Other versions
WO2003068501A1 (fr
Inventor
Arturo Mannheim
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.)
AGP Europe GmbH
IDEA Inc
Original Assignee
AGP Europe GmbH
IDEA Inc
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
Priority claimed from DE20202223U external-priority patent/DE20202223U1/de
Application filed by AGP Europe GmbH, IDEA Inc filed Critical AGP Europe GmbH
Priority to AU2003213028A priority Critical patent/AU2003213028A1/en
Publication of WO2003068501A1 publication Critical patent/WO2003068501A1/fr
Publication of WO2003068501A9 publication Critical patent/WO2003068501A9/fr
Anticipated expiration legal-status Critical
Ceased 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
    • B32B17/10128—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
    • B32B17/10009—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
    • B32B17/10082—Properties of the bulk of a glass sheet
    • B32B17/10119—Properties of the bulk of a glass sheet having a composition deviating from the basic composition of soda-lime glass, e.g. borosilicate
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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

  • Armoured glazing constructions has as main objective to provide protection against ammunition of a defined type and energy/velocity characteristics.
  • the most important applications includes military and civil vehicles, cash & transit vehicles, marine ships, aircrafts and government buildings and all of these can be either flat or curved.
  • These glazing constructions and specially the transportation ones must comply with a series of basic functional requirements as a) high scratch/abrasion resistance b) high durability under environmental conditions b) free splinter projection (anti-spall) c) residual field of vision d)minimum weight e) minimum thickness and f) optical quality (free of distortions).
  • the anti-spall protection requirement is critical because the splinters projected to the internal environment to be protected have such a high energy that they are normally more devastating than even the bullet itself.
  • the glass industry has developed two basic ways to reduce the severity of this problem i) incorporating a polymeric ply adhered to the rear most face of the armour construction facing the environment to be protected which brings several difficulties in the manufacturing processes, in the optical performance (distortion and double vision effect) and in the scratch resistance of the armoured construction, in the chemical stability under a lot of substances and worst, in the durability of its surface by the small hardness and ii) Multi layered glass and plastic construction with an increased thickness (regularly 2 times thicker than the most efficient compositions available of i).
  • This invention covers new and improved cross sections based on one or more thin chemically strengthened glasses to improve the splinter projection protection performances, to optimise the ballistic behaviour of the glazing, to extend the life span of the product and to achieve a considerable reduction on the complexity of the actual manufacturing techniques which finally reflects on a lower production cost.
  • Coated PET is maybe less sensitive to chemical attack than Polycarbonate but its ballistic and splinters protection perfomiances a re far 1 ess e ffective t han P olycarbonate a nd t here i s n ot a c ross section advantage (in terms of weight and thickness) of using PET instead of Polycarbonate.
  • Another problem common to any polymeric splinter protection solution is that environmental conditions like ultraviolet solar radiation, temperature excursions and water vapour coming from the atmosphere may cause a durability issue causing a significant reduction in the material lifetime.
  • a buffer or cover plate usually being of soda lime glass must be used on top of the inner surface of said polymer within the manufacturing process (autoclave cycle) to achieve a relatively high flatness of the surface of said polymer and a good optical quality but, in the other hand, having an additional glass represents higher costs on raw materials, longer bending and autoclave processes and increased hand labour, reworks and rejected product on production, decreasing the productivity. All these reasons explain the need of having a ballistically efficient and mechanical and chemically durable solution for our transportation application.
  • Laminated anti-bandit glazing Cross section concept Single glazed composite element
  • This patent is related to security glazing for anti-bandit applications and all examples and embodiments are referred to this type of manual attacks as hammers, pick-axes, crowbars, b ricks, i t c an b e seen that the lower spall generated by the impacts on their preferred embodiments is rated between 13gr. and more than 200 gr.; it is important to understand that for BRG applications the weight for the total spall generated is more than 500 times lower, it is impossible to have a BRG construction with the level of spall shown on the mentioned patent, this spall would destroy the witness foil of the standard ballistic test and would cause as much injures as the caused by the bullet by itself. So, it is evident that the claimed construction of the mentioned patent is far away from the field of application of our invention.
  • the lowest thickness for its rearmost glass is 16% of the thickness of the thicker one in the composition; in our invention we are considering a thin glass with thickness less than 0,7mm and preferred 0,4mm whose thickness is much lower than 16% of the thickest glass on a typical construction (thickest glass on a BRG composition is ranged between 6 and 15mm).
  • underlay this invention is that an inorganic scratch resistant and chemically inert material has to be used as the protecting ply against splinter projection (anti spall or no spall layer) in order to achieve the durability requirements demanded by the transportation application and keeping an efficient ballistic performance (as for total thickness vs. ballistic resistance).
  • glass itself is the material to be used as the last inner layer in an armoured glazing construction. This is because glass has an abrasion, scratches and chemical resistance far superior to any polymeric, plastic material (see Table 1).
  • thermally tempered glass breaks in small fragments when broken but this is not a good solution for armoured ballistic glazing as splinter protection because:
  • the chemical strengthening process introduces in the glass a residual stress profile with a compression layer on the surfaces and an inner tensile area. Fragmentation after breakage can be controlled to some extent by controlling the ion-exchange process parameters resulting in suitable values of the compression layer depth (Case depth C D ), surface compression (Sc), and central tension ( ⁇ ) (see Figure 2).
  • the leading ideas in using thin CS glass in armoured constructions are :
  • Thermal tempering has the advantage to induce a compression layer of 20% of original glass thickness resulting in a pretty high inner central tension that means enough energy to generate tiny fragmentation upon glass breakage.
  • the compression layer depth introduced in soda-lime float glass by ion-exchange chemical strengthening is typically ranging from 10 ⁇ m to 50 ⁇ m. With a 30 ⁇ m compression layer depth on a 2 mm (2000 ⁇ m) glass the compression depth over thickness ratio is 1.5 % and the resulting fragmentation is coarse because of the low inner tensile stress.
  • a plastic core ply as an outer layer of the anti spalling construction that can be any low or high modulus polymer from Polycarbonate, to thick (0,13-25 mm) PNB to thick polyurethane (0,13-25 mm), to Polyethylene ionomer, Acrylic, EVA, Polyethylene thereftalate PET, to any ionomeric modification of said polymers like Surlyn (Sentry Glas Plus) that, in this case, it is not affected by surface scratch problems as an energy impact absorber and an inner (facing the internal environment in accordance with figures 3 a and 3b) controlled injury free splinter projection system consisting in a thin chemically strengthened glass layer or layers which may be treated with a coating process like silk-screening, CND, PND, Sputtering, sol-gel, painting or masking among others.
  • the different systems will be accordingly used for the different ballistic protection levels required.
  • the underlying concept of the invention is that the armoured glazing cross section should be divided in two parts:
  • Rearmost part facing the environment to be protected has mainly the purpose of absorbing the residual impact energy without splinter projection towards the environment.
  • a typical ballistic test (EN 1063) describe all the necessary conditions to perform the ballistic attack (Bullet type and weight, bullet velocity, number of strikes (typically 3) and striking distance, striking points - hit spacing (normally are the vertex of an equilateral triangle) samples number (typically 3 samples have to be tested), sample mounting system, and witness aluminium foil (0.02 mm thickness mass density 54 g/m 2 ).
  • a single thin glass layer will be considered in the cross section of the armoured glazing as the external layer facing the environment to be protected.
  • This ply will have the impact/bending strength sufficient to withstand the requested level of ballistic protection.
  • the ply will have a chemical strengthening process with its central tension being tailored to release injury free splinters without generating perforations on the aluminium witness foil of the respective standard(s) ballistic test(s) for the given ballistic level
  • the thin glass may be treated with a coating process like silk-screening, CND, PND, sputtering sol-gel, painting or masking among others, in order to keep a residual vision through the armoured construction after the first and subsequent shots based on the pre-defined ballistic level.
  • the single thin glass may have some of the following compositions: Soda Lime, Borosilicate or Aluminosilicate or may be a layer of Aluminium Oxynitride, Magnesium Aluminate, Aluminium Oxide or some other armour ceramic.
  • a system of multiple thin glass layers will be considered in the cross section of the armoured glazing as the external layer facing the environment to be protected.
  • Each ply of the system will have the impact/bending strength sufficient to withstand the requested level of ballistic protection.
  • the one or more plies of the embodiment will have a chemical strengthening process in order that the multiple plies system be tailored to release injury free splinters without generating perforations on the aluminium witness foil of the respective standard(s) ballistic test(s) for the given ballistic level .
  • one or more plies may be treated with a coating process like silk-screening, CND, PND, sputtering sol-gel, painting or masking among others, in order to keep a residual vision through the armoured construction after the first and subsequent shots based on the pre-defined ballistic level.
  • the thin glass plies system may have some of the following compositions: Soda Lime, Boro or Aluminosilicate or may be composed by plies o f Aluminium Oxynitride, Magnesium Aluminate, Aluminium Oxide or some other armour ceramic or their combination.
  • a s ystem c omposed b y s ingle o r m ultiple t hin g lass 1 ayers will be considered as the external layer facing the environment to be protected in the cross section of the armoured glazing coupled with an intermediate plastic energy absorber which may be composed by one or more plies of polymeric materials.
  • Each ply of the system will have the impact/bending strength sufficient to withstand the requested level of ballistic protection.
  • the central tension of the last ply facing the environment will be tailored to release injury free splinters without generating perforations on the aluminium witness foil of the respective standard(s) ballistic test(s) for the given ballistic level.
  • the front most section is a construction composed by one or more plies of inorganic components with an individual thickness between 0.03 and 25mm.
  • the layer or multiple layers of polymer connecting the rearmost section (single or multiple p lies chemically strengthened glass) to the intermediate and to the front most section should be with a thickness from 0.13 up to 12 mm and the polymeric material can be: PNB (Polyvinyl butyral), Polyurethane, Thermoplastic Polyurethane, Polycarbonate, Acrylic, EN A, Polyethylene Thereftalate, Polyester (PET), Polyethylene ionomer, Surlyn (Sentry Glas Plus), acrylic resin and any Ionomeric modification of said polymers.
  • PNB Polyvinyl butyral
  • Polyurethane Polyurethane
  • Thermoplastic Polyurethane Polycarbonate
  • Acrylic EN A
  • Polyethylene Thereftalate Polyester
  • PET Polyethylene ionomer
  • Surlyn Surlyn (Sentry Glas Plus)
  • acrylic resin any Ionomeric modification of said polymers.
  • a typical cross section of an armoured glazing is:
  • Example N°1B - A typical cross section of an armoured glazing without an Impact Energy Absorber is:
  • Another typical cross section of an armoured glazing is:
  • Another typical cross section of an armoured glazing is :

Landscapes

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

Abstract

L'invention concerne des structures de vitrage en coupe et le concept approprié d'une structure de transport blindée à protection balistique présentant une durabilité ainsi que des performances anti-écaillage et anti-balles améliorées. Ces structures présentent une ou plusieurs couches de verre minces chimiquement renforcées, sodocalciques, borosilicatées ou aluminosilicatées. Ces couches de verre chimiquement renforcées sont fabriquées avec un profil de contrainte résiduelle adapté qui évite ou limite la projection d'éclats en cas d'impact balistique et améliore les performances globales du vitrage en matière de protection balistique.
PCT/US2003/004234 2002-02-13 2003-02-13 Structure de vitrage anti-ecaillage Ceased WO2003068501A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003213028A AU2003213028A1 (en) 2002-02-13 2003-02-13 Anti spalling glass construction

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE20202223U DE20202223U1 (de) 2002-02-13 2002-02-13 Abplatzsichere Glaskonstruktion
DE20202223.4 2002-02-13
US37413202P 2002-04-22 2002-04-22
US60/374,132 2002-04-22
US38328602P 2002-05-28 2002-05-28
US60/383,286 2002-05-28

Publications (2)

Publication Number Publication Date
WO2003068501A1 WO2003068501A1 (fr) 2003-08-21
WO2003068501A9 true WO2003068501A9 (fr) 2004-04-22

Family

ID=27738764

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/004234 Ceased WO2003068501A1 (fr) 2002-02-13 2003-02-13 Structure de vitrage anti-ecaillage

Country Status (2)

Country Link
AU (1) AU2003213028A1 (fr)
WO (1) WO2003068501A1 (fr)

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EP0654344A1 (fr) * 1993-11-24 1995-05-24 Sierracin Corporation Une mince plaque de verre laminé chauffé pour des pare-brises d'avions
US20030044579A1 (en) * 2001-08-25 2003-03-06 Nelson Bolton Anti-spalling laminated safety glass

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AU2003213028A1 (en) 2003-09-04
WO2003068501A1 (fr) 2003-08-21

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