WO2005062932A2 - Panneau transparent a l'epreuve des balles dans un seul sens conforme aux normes nij de niveau iii et panneau transparent a l'epreuve des balles perforantes - Google Patents

Panneau transparent a l'epreuve des balles dans un seul sens conforme aux normes nij de niveau iii et panneau transparent a l'epreuve des balles perforantes Download PDF

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Publication number
WO2005062932A2
WO2005062932A2 PCT/US2004/043322 US2004043322W WO2005062932A2 WO 2005062932 A2 WO2005062932 A2 WO 2005062932A2 US 2004043322 W US2004043322 W US 2004043322W WO 2005062932 A2 WO2005062932 A2 WO 2005062932A2
Authority
WO
WIPO (PCT)
Prior art keywords
transparent panel
sheet
transparent
panel according
thickness
Prior art date
Application number
PCT/US2004/043322
Other languages
English (en)
Other versions
WO2005062932A3 (fr
Inventor
Yosef Labock
Original Assignee
Labock Technologies, 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
Application filed by Labock Technologies, Inc. filed Critical Labock Technologies, Inc.
Publication of WO2005062932A2 publication Critical patent/WO2005062932A2/fr
Publication of WO2005062932A3 publication Critical patent/WO2005062932A3/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10018—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 only one 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • 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
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • 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
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/02—Plate construction
    • F41H5/04—Plate construction composed of more than one layer
    • F41H5/0407—Transparent bullet-proof laminatesinformative reference: layered products essentially comprising glass in general B32B17/06, e.g. B32B17/10009; manufacture or composition of glass, e.g. joining glass to glass C03; permanent multiple-glazing windows, e.g. with spacing therebetween, E06B3/66
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/412—Transparent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/584—Scratch resistance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2369/00—Polycarbonates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2571/00—Protective equipment

Definitions

  • the invention relates generally to bullet-resistant transparent panels and more specifically to unidirectional bullet-resistant transparent panels meeting National Institute of Justice (NIJ) Standard Level III and to transparent panels that resist armor piercing bullets.
  • Many prior art panels are formed of front or impact shock receiving layers formed of glass and solid resinous materials such as polycarbonate, acrylic and rubber- modified acrylics, among many other materials.
  • the back layer, facing away from the direction of impact, is generally formed of a polycarbonate.
  • One type as described for example in U.S. Patent No. 4,594,290, to Fischer et al . , is formed of transparent sheets of glass or cast acrylic, a polyurethane sheet and a urethane-modified acrylic sheet.
  • U.S. Patent 5,747,159 to Labock teaches a panel having unidirectional bullet-resisting properties.
  • the panel is formed of an outer sheet of an acrylic resin and an inner sheet of a polycarbonate resin.
  • the panel is both thick, 41.6 - 45.6 mm, and heavy 80-90 Kg per square meter. Disclosure of the Invention: This invention relates to a one way bullet -resistant transparent panel meeting NIJ level III standards and an armor piercing bullet-resistant transparent panel which for products of this type is comparatively light, thin, bullet- resistant, and provides unidirectional characteristics.
  • a transparent panel effective for blocking the penetration of a bullet when fired from the outer side of the panel but not when fired from the inner side of the panel.
  • the panel is formed as follows: the outer transparent sheet of glass has a thickness of about 4 mm to about 6 mm, the several layers of acrylic resin sheet have a thickness of about 4 mm to about 6 mm, ideally 4-7 layers according to the thickness, and the inner transparent sheet of polycarbonate resin has a thickness of about 4 mm to about 6 mm.
  • the sheets are bonded together by a polyurethane transparent adhesive.
  • the laminated panel exhibits unidirectional bullet-resisting characteristics.
  • Such a panel construction thus provides protection against weapons fired from the "outside” of the panel attacking persons on the inside of the panel and panels of the present invention are particularly useful in constructing enclosures, such as in a vehicle providing a protective cage for a teller, or other such protective closures.
  • the panel protects against projectiles such as bullets and other shells fired from "outside” the panel and permits insiders to fire weapons against attacking outsiders.
  • a transparent panel effective for blocking the penetration of a bullet.
  • the transparent panel contains an annealed glass sheet, an acrylic sheet bonded to the annealed glass sheet, and a polycarbonate sheet bonded to the acrylic sheet.
  • the annealed glass sheet preferably is formed of two annealed glass sheets bonded to each other and each having a thickness in a range of 6 - 7 mm.
  • the acrylic sheet is preferably formed of three acrylic sheets bonded to each other and each having a thickness in a range of 9 - 10 mm.
  • the polycarbonate sheet preferably has a thickness of 9 - 10 mm. All of the sheets are bonded to each other with an urethane glue.
  • the transparent panel has at least 70% light transparency and the transparent panel has light transparency in a range of about 70% to about 90%.
  • the transparent panel does not distort images .
  • the annealed glass sheets, the acrylic sheets, and the polycarbonate sheet are formed in a curved shape such as the shape of a windshield.
  • the transparent panel has a first side and a second side. The transparent panel prevents a bullet from penetrating when fired at the first side but allows a bullet to traverse the transparent panel when fired at the second side with at least 70% of its initial velocity.
  • the transparent panel meets National Institute of Justice Standard Level III for bullet penetration prevention.
  • a transparent panel capable of withstanding armor piercing bullets.
  • the transparent panel contains a plurality of layers formed of glass and bonded to each other, and an inner sheet formed of polycarbonate bonded to the plurality of layers.
  • each of the plurality of layers has a thickness of 11 - 14 mm and the inner sheet has a thickness of about 4 mm to about 6 mm.
  • a first bonding agent being polyvinyl butural or a polyester is used for bonding the plurality of layers to each other.
  • a second bonding agent being urethane is used for bonding the inner sheet to one of the plurality of layers.
  • the plurality of layers is four layers each made of glass.
  • each of the four layers has a thickness of 12.5 mm and the inner sheet has a thickness of 6 mm.
  • the first bonding agent has a thickness of 0.03 mm and the second bonding agent has a thickness of 0.06 mm.
  • the glass used is starfire glass which provides a very transparent glass which enhances the optical behavior of the panel.
  • Fig. 1 is a diagrammatic, sectional view of a first embodiment of a bullet-resistant panel according to the invention
  • Fig. 2 is a diagrammatic, sectional view of a second embodiment of the bullet-resistant panel according to the invention
  • Fig. 3 is a diagrammatic, sectional view of a third embodiment of the bullet-resistant panel according to the invention.
  • a bullet-resistant panel 10 is formed of an outer transparent sheet 1 of glass, several layers of an acrylic resin sheet 2 , and an inner transparent sheet 3 of a polycarbonate resin.
  • a transparent polyurethane adhesive 4 is disposed between the sheets 1-3 bonding them together to form the integral panel 10.
  • the acrylic resin sheets 2 each have a high degree of hardness, but are somewhat brittle.
  • the polycarbonate resin sheet 3 is less hard than the acrylic resin sheet 2, but is elastic or less brittle.
  • the outer glass sheet 1 and the layers of the acrylic resin sheet 2 impart a high degree of hardness to an outer face of the panel 10 receiving an impact, such as by a projectile such as shell, shell fragments, bullet, stones, rock or the like, and attenuates the force of this impact.
  • the polycarbonate resin sheet 3 on the inner face of the panel 10 absorbs the attenuated force and supports the acrylic resin sheets 2 against breaking or shattering.
  • the combination of the three sheets 1, 2, 3 thus provide a high degree of resistance against penetration or shattering by a projectile.
  • the resin sheets 2 and 3 can be provided with unidirectional bullet-resisting characteristics if the resin sheets 2 and 3 are made of a predetermined thickness.
  • the outer transparent sheet 1 of glass has a thickness of about 4 mm to about 6 mm
  • each of the several layers of acrylic resin sheet 2 have a thickness between 4 - 6 mm
  • the panel is ideally constructed of 4 - 7 layers according to the thickness being used
  • the inner transparent sheet 3 of polycarbonate resin has a thickness of about 4 mm to about 6 mm.
  • the sheets 1, 2, 3 are bonded together by the polyurethane transparent adhesive 4.
  • Such a panel has been found to block the penetration of a 7.62 x 39 mm, 7.62 x 51 mm, and 5.51 x 45 mm bullets when fired from a side 6 of the outer glass sheet 1, but not when fired from a side 7 of the inner polycarbonate resin sheet 3.
  • the outer transparent sheet 1 is formed of standard glass.
  • the polycarbonate sheet 3 is manufactured by GE .
  • the acrylic resin sheet 2 is a cast acrylic sheet also manufactured by GE .
  • the adhesive 4 is a clear liquid polyurethane adhesive commonly available for bonding polycarbonate to itself, glass or metal .
  • the adhesive has an elongation of about 300%, and is preferably applied at a thickness of about 0.7 to about 2 mm, and most preferably is applied at a thickness of approximately 1.3 mm.
  • the outer transparent sheet 1 of glass is 5.5 mm
  • the acrylic resin sheet 2 is formed of four internal layers each having a thickness of 4 mm
  • the inner transparent sheet 3 formed of polycarbonate has a thick of about 5.5 mm
  • the transparent polyurethane adhesive has a thickness of about 1.3 mm.
  • the outer transparent sheet 1 and/or the inner transparent sheet 3 has a scratch-resistant coating 8 formed thereon on a face thereof not containing the transparent polyurethane adhesive 4.
  • the panel 10 has a layered type of construction.
  • each layer has uniform mechanical properties that are insulated by the bonding agent and the selection and thickness of the bonding agent can have a significant impact on the worthiness of the panel 10. Due to the layered construction, an incoming projectile requires more energy to penetrate the multiple layers when properly bonded. The bullet must pierce each of the multiple layers independently rather than just one thicker layer.
  • the transparent panel 10 shown in Fig. 1 can be modified by replacing the first acrylic layer 2 with a second glass layer 1 having a thickness of about 4 mm to about 6 mm and has good properties at about 5.5 mm.
  • the second glass layer 1 is shown in dashed lines in Fig. 1.
  • the second glass layer 1 provides extra hardness that adds to the bullet stopping power of the transparent panel 10. Fig.
  • Fig. 1 illustrates the transparent panel 10 having a flat configuration, such as may be used for side windows on a vehicle, building windows, windows for protective cages and the like. It will be appreciated that panel can be shaped, angled, curved and/or bent and is not restricted to the flat configuration shown and can be used for other configurations such as windshields, curved glass panels and the like.
  • Fig. 2 is a second embodiment of a transparent panel 20 according to the. invention.
  • the second embodiment has a high level of clarity with a minimum of 70% of light transparency and up to 90% light transparency.
  • the second embodiment will also stop bullets from penetrating from a first direction 28 but will allow bullets to penetrate from a second or other direction 29 as in the first embodiment.
  • the bullets penetrating from the permeable side will retain approximately 75% of their velocity upon exiting the panel 20.
  • the panel 20 is bonded together to maintain the properties of a one-piece assembly.
  • the individual mechanical characteristics of the materials used in each layer act independently and are not affected by the mechanical characteristics of the other layers or by the applied bonding agent such as bonding with urethane based adhesives or glues. Fig.
  • FIG. 2 shows the panel 20 formed of a first annealed glass layer 21 having a thickness of 6 - 7 mm, a second annealed glass layer 22 having a thickness of 6 - 7 mm, a first acrylic layer 23 having a thickness of 9 - 10 mm, a second acrylic layer 24 having a thickness of 9 - 10 mm, a third acrylic layer 25 having a thickness of 9 - 10 mm, and a polycarbonate layer 26 having a thickness of 9 - 10 mm.
  • the layers 21-26 are bonded together using a urethane adhesive 27.
  • Annealed glass refers to a glass that has been softened usually by a thermal process. More specifically, annealed glass is not as rigid and brittle as standard glass .
  • the panel 20 has a high bullet blocking capability.
  • Fig. 3 shows a third embodiment of a bullet-resistant panel 30.
  • One of the overriding aspects of the third embodiment is that it provides a high level of clarity and has 70 - 90% light transparency.
  • the third embodiment can be installed on vehicles, buildings, guard towers, windshields and any other installations that require a high level of light transparency and minimum distortion and at the same time the ability to withstand armor piercing shells and bullets.
  • the panel 30 is formed of a first sheet 31 of special glass called starfire and has a range of 11 - 14 mm, ideally 12.5 mm.
  • a second sheet 33 of starfire glass is bonded to the first sheet 31.
  • a bonding agent 32 from the polyurethane family is used because it is clear and has the desired light transparency properties.
  • the second sheet 33 has a thickness in a range of 11 - 14 mm, ideally 12.5 mm.
  • a third sheet 35 of starfire glass is bonded to the second sheet 33.
  • a bonding agent 34 from the polyurethane family is used.
  • the third sheet 35 has a thickness in a range of -lO-
  • a fourth sheet 37 of starfire glass is bonded to the third sheet 35.
  • a bonding agent 36 from the polyurethane family is used.
  • the fourth sheet 37 has a thickness in a range of 11 - 14 mm, ideally 12.5 mm.
  • a fifth sheet 39 formed of a polycarbonate is bonded to the fourth sheet 37.
  • a bonding agent 38 is used.
  • the polycarbonate sheet 39 has a thickness in a range of 4 - 6 mm, ideally 6 mm.
  • a scratch resistance layer 40 is applied onto the polycarbonate sheet 39.
  • the bonding agent 32, 34, and 36 are preferably polyester or PVB .
  • PVB or polyvinyl butural is a synthetic material in the form of a film and is commercially available in different thicknesses.
  • the bonding agent 32, 34, 36 has a thickness of 0.03 mm.
  • the bonding agent 38 is preferably urethane and has a thickness of .06 mm.
  • the thicknesses listed for the bonding agents 32, 34, 36 and 38 are merely exemplary.
  • Starfire glass is a commercial denomination for glass free of iron which is a contaminating agent and gives it a green color and should therefore be at a minimum.
  • Starfire glass is made by a special process, resulting in a tempered highly transparent glass. Therefore starfire glass has a higher transparency than standard glass.
  • the combination of the starfire glass and the bonding agent produces a panel 20 with superior optical characteristics than a panel combined by no bonding agent .
  • Starfire glass is used for its transparency but could be replaced by standard glass in the panel 30.
  • the transparent panel 30 will generally be capable of resisting penetration against 7.62 x 39 caliber
  • the panel 30 meets the NIJ Level IV standard for armor piercing bullets.
  • the transparent panel 30 has a weight of 117 kg per square meter and has an overall thickness of 61 mm.
  • the weight of the panel 30, which can withstand armor piercing bullets, is less than that known in the prior art .
  • panel 30 is also unidirectional. The panel 30 will block the penetration of a bullet when fired from side 41 of the outer glass sheet 31, but not when fired from side 42 of the inner polycarbonate sheet 39.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Laminated Bodies (AREA)
  • Joining Of Glass To Other Materials (AREA)

Abstract

Cette invention porte sur un panneau transparent qui présente des caractéristiques de résistance unidirectionnelle aux balles et qui comprend une feuille de verre transparente extérieure, plusieurs feuilles intermédiaires formées d'une résine acrylique et une feuille transparente interne formée d'une résine de polycarbonate. Un adhésif transparent est utilisé pour coller les feuilles les unes aux autres, ce qui permet de former le panneau. Le degré de résistance aux balles est mesuré sur la base des normes NIJ, lequel panneau présente un coefficient de niveau III.
PCT/US2004/043322 2003-12-23 2004-12-23 Panneau transparent a l'epreuve des balles dans un seul sens conforme aux normes nij de niveau iii et panneau transparent a l'epreuve des balles perforantes WO2005062932A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US74519603A 2003-12-23 2003-12-23
US10/745,196 2003-12-23
US85413004A 2004-05-25 2004-05-25
US10/854,130 2004-05-25

Publications (2)

Publication Number Publication Date
WO2005062932A2 true WO2005062932A2 (fr) 2005-07-14
WO2005062932A3 WO2005062932A3 (fr) 2006-04-06

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PCT/US2004/043322 WO2005062932A2 (fr) 2003-12-23 2004-12-23 Panneau transparent a l'epreuve des balles dans un seul sens conforme aux normes nij de niveau iii et panneau transparent a l'epreuve des balles perforantes

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2724113A4 (fr) * 2011-06-21 2015-03-18 Bayer Materialscience Llc Stratifié de polycarbonate pour événements explosifs à proximité immédiate

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4594290A (en) * 1982-12-06 1986-06-10 Swedlow, Inc. Impact resistant laminate
US5506051A (en) * 1994-01-27 1996-04-09 Nicolectronix Ltd. Laboratories Transparent sheet composites for use as bullet-proof windows
US5747159A (en) * 1992-02-28 1998-05-05 M.R.M. International, Inc. Bullet-resistant transparent panel, and method and press for making same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4594290A (en) * 1982-12-06 1986-06-10 Swedlow, Inc. Impact resistant laminate
US5747159A (en) * 1992-02-28 1998-05-05 M.R.M. International, Inc. Bullet-resistant transparent panel, and method and press for making same
US5506051A (en) * 1994-01-27 1996-04-09 Nicolectronix Ltd. Laboratories Transparent sheet composites for use as bullet-proof windows

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2724113A4 (fr) * 2011-06-21 2015-03-18 Bayer Materialscience Llc Stratifié de polycarbonate pour événements explosifs à proximité immédiate

Also Published As

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