WO2006048870A1 - Bulletproof devices - Google Patents

Bulletproof devices Download PDF

Info

Publication number
WO2006048870A1
WO2006048870A1 PCT/IL2005/001142 IL2005001142W WO2006048870A1 WO 2006048870 A1 WO2006048870 A1 WO 2006048870A1 IL 2005001142 W IL2005001142 W IL 2005001142W WO 2006048870 A1 WO2006048870 A1 WO 2006048870A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
fibers
polymeric
layers
bulletproof
Prior art date
Application number
PCT/IL2005/001142
Other languages
French (fr)
Inventor
Ronnie Klein
Pinhas Hascalovich
Original Assignee
Balltex Shielding Technologies Ltd.
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 Balltex Shielding Technologies Ltd. filed Critical Balltex Shielding Technologies Ltd.
Publication of WO2006048870A1 publication Critical patent/WO2006048870A1/en

Links

Classifications

    • 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
    • F41H5/0442—Layered armour containing metal
    • 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
    • F41H5/0414—Layered armour containing ceramic material
    • 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
    • F41H5/0471—Layered armour containing fibre- or fabric-reinforced layers
    • F41H5/0485—Layered armour containing fibre- or fabric-reinforced layers all the layers being only fibre- or fabric-reinforced layers
    • 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
    • F41H5/0492—Layered armour containing hard elements, e.g. plates, spheres, rods, separated from each other, the elements being connected to a further flexible layer or being embedded in a plastics or an elastomer matrix

Definitions

  • This invention relates generally to bulletproof devices, and particularly to bulletproof devices constructed of a textile 3D complex structure.
  • US Patent 4,292,882 to Clausen describes a bullet proof armor including a laminated pad with front and rear surfaces and composed of loosely related fabric sheets woven of fibers having high tensile strength.
  • the fibers of the fabric establish gripping and holding engagement on the surface of bullets directed toward and impinging the front surface of the pad.
  • Metal abrading particulate material disposed at the front surface of the pad abrades the bullets.
  • the particulate abrasive material may be aluminum oxide, carborundum or garnet sands, for example.
  • US Patent 5,175,040 to Harpell, et al. describes flexible impact resistant armor comprising a plurality of prepreg packets made of prepreg layers.
  • Each prepreg layer comprises a plurality of coplanar fibers embedded in a polymeric matrix.
  • the prepreg packets are unattached to each other over a substantial portion of their adjacent areas.
  • the plurality of packets supposedly results in improved flexibility.
  • US Patent 5,560,971 to Emery describes a multi-layer material designed to cover ceramic armor applied to military vehicles, which suppresses ceramic shrapnel.
  • This material is a laminate comprising of three distinct layers of fabric.
  • the middle layer is a heavy ballistic nylon or polyester fabric, either woven or knitted.
  • the outer layer that is attached to the middle layer can be any type of decorative fabric, including woven, nonwoven and knit fabrics. This fabric should be relatively light weight and dyeable.
  • the bottom layer of fabric is a loop pile, warp knit, weft-inserted fabric. The length of each loop, yarn type, and denier is adapted to comport to a particular hook system utilized on a particular military vehicle. These three layers of fabric are adhesively attached to each other.
  • the present invention seeks to provide novel bulletproof devices that use a three- dimensional (3D) knitted polymeric grid impregnated with polymeric material and grains of impact resistant materials, as is described more in detail hereinbelow.
  • the bulletproof devices may be fashioned as clothing (e.g., vests) to protect law enforcement personnel, for example.
  • the bulletproof devices may be fashioned as armor for vehicles, as well as for structures, such as private homes, office buildings, school buildings, hotels and many others.
  • apparatus including a bulletproof device including a plurality of layers of a 3D knitted polymeric grid impregnated with polymeric material, the bulletproof device also including grains of impact resistant materials.
  • the bulletproof device may include at least three layers.
  • a first outer layer may be made of at least one of mono and multi filament fibers, impregnated with a mixture of polymeric cement and grains of an impact resistant material.
  • a second layer inwards of the first outer layer may include a 3D knitted polymeric grid made of oriented fibers in two mutually orthogonal directions connected with fibers in a third direction orthogonal to the other two mutually orthogonal directions.
  • a third layer inwards of the second layer may include a 3D spacer fabric, wherein the majority of the fibers are oriented in the third direction.
  • the bulletproof device may include a textile 3D complex structure, divided into three defined layers. Each layer plays a different role:
  • the first (outer) layer includes a 3D knitted polymeric grid, made of mono or multi filament fibers, impregnated with a mixture of polymeric foamed (or not foamed) cement and grains of impact resistant materials (such as but not limited to, metals or different silicates - boron, carbide, aluminum oxide, and the like and any combination thereof).
  • This layer has high impact resistance due to the mechanical resistance of the impact resisting materials, the elasticity of the cement and the density of the grid. The bullet/fragment deforms on first contact with this layer.
  • the second layer is a complex 3D knitted polymeric grid (e.g., sheets) made of oriented fibers in two mutually orthogonal directions (e.g., X and Y directions), and connected with fibers in the Z direction in order to make a loose but strong connection between the sheets.
  • the role of this layer is to slow the bullet/fragment to a complete stop by absorbing the kinetic energy while the fibers are stretched during penetration.
  • the third layer is a 3D spacer fabric, where the majority of the fibers are oriented in the Z direction (into the thickness of the material). The role of this layer is to absorb the trauma which occurs when high velocity objects hit a body.
  • the first (outermost) sheet of the second layer may be bonded to the first layer, and the last (innermost) sheet of the second layer may be bonded to the third layer.
  • All three layers are made of complex three dimensional grids knitted from polymeric fibers, thus obtaining a light and flexible, yet strong structure.
  • the first layer is impregnated with other materials, the fact that the high impact material is granulated, and the polymeric cement may be foamed, means that the additional weight is relatively low, and the total weight of the structure can be 45%-60% of the weight of ceramic armors with the same ballistic properties.
  • the second and third protective layers may contain the supportive grid only and may be filled with a relevant foam or cement. All three mentioned layers can. loosely be stitched to each other and can be woven separately before being stitched to each other or can be woven in one continues process and later on stitched to each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Abstract

A bulletproof device including a 3D knitted polymeric grid impregnated with polymeric material and grains of impact resistant materials.

Description

BULLETPROOF DEVICES FIELD OF THE INVENTION
This invention relates generally to bulletproof devices, and particularly to bulletproof devices constructed of a textile 3D complex structure.
BACKGROUND OF THE INVENTION
Many bulletproof devices are known in the art, which use fibers and polymers with high tensile strength.
For example, US Patent 4,292,882 to Clausen describes a bullet proof armor including a laminated pad with front and rear surfaces and composed of loosely related fabric sheets woven of fibers having high tensile strength. The fibers of the fabric establish gripping and holding engagement on the surface of bullets directed toward and impinging the front surface of the pad. Metal abrading particulate material disposed at the front surface of the pad abrades the bullets. The particulate abrasive material may be aluminum oxide, carborundum or garnet sands, for example.
US Patent 5,175,040 to Harpell, et al., describes flexible impact resistant armor comprising a plurality of prepreg packets made of prepreg layers. Each prepreg layer comprises a plurality of coplanar fibers embedded in a polymeric matrix. The prepreg packets are unattached to each other over a substantial portion of their adjacent areas. The plurality of packets supposedly results in improved flexibility.
US Patent 5,560,971 to Emery describes a multi-layer material designed to cover ceramic armor applied to military vehicles, which suppresses ceramic shrapnel. This material is a laminate comprising of three distinct layers of fabric. The middle layer is a heavy ballistic nylon or polyester fabric, either woven or knitted. The outer layer that is attached to the middle layer can be any type of decorative fabric, including woven, nonwoven and knit fabrics. This fabric should be relatively light weight and dyeable. The bottom layer of fabric is a loop pile, warp knit, weft-inserted fabric. The length of each loop, yarn type, and denier is adapted to comport to a particular hook system utilized on a particular military vehicle. These three layers of fabric are adhesively attached to each other.
SUMMARY OF THE INVENTION
The present invention seeks to provide novel bulletproof devices that use a three- dimensional (3D) knitted polymeric grid impregnated with polymeric material and grains of impact resistant materials, as is described more in detail hereinbelow. The bulletproof devices may be fashioned as clothing (e.g., vests) to protect law enforcement personnel, for example. The bulletproof devices may be fashioned as armor for vehicles, as well as for structures, such as private homes, office buildings, school buildings, hotels and many others.
There is thus provided in accordance with an embodiment of the invention apparatus including a bulletproof device including a plurality of layers of a 3D knitted polymeric grid impregnated with polymeric material, the bulletproof device also including grains of impact resistant materials.
The bulletproof device may include at least three layers. For example, a first outer layer may be made of at least one of mono and multi filament fibers, impregnated with a mixture of polymeric cement and grains of an impact resistant material. A second layer inwards of the first outer layer may include a 3D knitted polymeric grid made of oriented fibers in two mutually orthogonal directions connected with fibers in a third direction orthogonal to the other two mutually orthogonal directions. A third layer inwards of the second layer may include a 3D spacer fabric, wherein the majority of the fibers are oriented in the third direction.
DETAILED DESCRIPTION OF EMBODIMENTS
In a non-limiting embodiment of the invention, the bulletproof device may include a textile 3D complex structure, divided into three defined layers. Each layer plays a different role:
1. The first (outer) layer includes a 3D knitted polymeric grid, made of mono or multi filament fibers, impregnated with a mixture of polymeric foamed (or not foamed) cement and grains of impact resistant materials (such as but not limited to, metals or different silicates - boron, carbide, aluminum oxide, and the like and any combination thereof). This layer has high impact resistance due to the mechanical resistance of the impact resisting materials, the elasticity of the cement and the density of the grid. The bullet/fragment deforms on first contact with this layer.
2. The second layer is a complex 3D knitted polymeric grid (e.g., sheets) made of oriented fibers in two mutually orthogonal directions (e.g., X and Y directions), and connected with fibers in the Z direction in order to make a loose but strong connection between the sheets. The role of this layer is to slow the bullet/fragment to a complete stop by absorbing the kinetic energy while the fibers are stretched during penetration. 3. The third layer is a 3D spacer fabric, where the majority of the fibers are oriented in the Z direction (into the thickness of the material). The role of this layer is to absorb the trauma which occurs when high velocity objects hit a body. The first (outermost) sheet of the second layer may be bonded to the first layer, and the last (innermost) sheet of the second layer may be bonded to the third layer.
All three layers are made of complex three dimensional grids knitted from polymeric fibers, thus obtaining a light and flexible, yet strong structure. Although the first layer is impregnated with other materials, the fact that the high impact material is granulated, and the polymeric cement may be foamed, means that the additional weight is relatively low, and the total weight of the structure can be 45%-60% of the weight of ceramic armors with the same ballistic properties.
The second and third protective layers may contain the supportive grid only and may be filled with a relevant foam or cement. All three mentioned layers can. loosely be stitched to each other and can be woven separately before being stitched to each other or can be woven in one continues process and later on stitched to each other.
It is appreciated that various features of the invention which are, for clarity, described in the contexts of separate embodiments, may also be provided in combination in a single embodiment. Conversely, various features of the invention which are, for brevity, described in the context of a single embodiment, may also be provided separately or in any suitable subcombination.

Claims

CLAIMS What is claimed is:
1. Apparatus comprising: a bulletproof device comprising a plurality of layers of a 3D knitted polymeric grid impregnated with polymeric material, said bulletproof device also comprising grains of impact resistant materials.
2. The apparatus according to claim 1, wherein said bulletproof device comprises at least three layers.
3. The apparatus according to claim 1, wherein a first outer layer of said bulletproof device comprises a 3D knitted polymeric grid, made of at least one of mono and multi filament fibers, impregnated with a mixture of polymeric cement and grains of an impact resistant material.
4. The apparatus according to claim 3, wherein a second layer inwards of said first outer layer comprises a 3D knitted polymeric grid made of oriented fibers in two mutually orthogonal directions connected with fibers in a third direction orthogonal to "the other two mutually orthogonal directions.
5. The apparatus according to claim 4, wherein said second layer is adapted to slow a projectile by absorbing kinetic energy while the fibers are stretched during penetration of the projectile.
6. The apparatus according to claim 3, wherein a third layer inwards of said second layer comprises a 3D spacer fabric, wherein the majority of the fibers are oriented in said third direction.
7. The apparatus according to claim 3, wherein said polymeric cement is foajtned.
8. The apparatus according to claim 6, wherein an outermost sheet of said second layer is bonded to said first layer, and an innermost sheet of said second layer i s bonded to said third layer.
9. The apparatus according to claim 6, wherein said layers are stitched to one another.
PCT/IL2005/001142 2004-11-01 2005-11-01 Bulletproof devices WO2006048870A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US62408104P 2004-11-01 2004-11-01
US60/624,081 2004-11-01

Publications (1)

Publication Number Publication Date
WO2006048870A1 true WO2006048870A1 (en) 2006-05-11

Family

ID=35615520

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL2005/001142 WO2006048870A1 (en) 2004-11-01 2005-11-01 Bulletproof devices

Country Status (1)

Country Link
WO (1) WO2006048870A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015047506A3 (en) * 2013-06-28 2015-05-21 Von Hess John Antiballistic fabric and method of manufacturing the same
WO2021079144A1 (en) * 2019-10-25 2021-04-29 Tom Foster Ballistic protection material

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4292882A (en) 1977-06-07 1981-10-06 Clausen Carol W Armor comprising a plurality of loosely related sheets in association with a frontal sheet comprising metal abrading particles
US5175040A (en) 1987-08-03 1992-12-29 Allied-Signal Inc. Flexible multi-layered armor
US5560971A (en) 1995-04-18 1996-10-01 Milliken Research Corporation Multi-layer material for suppression of ceramic shrapnel created during a ballistic event
WO1998002607A1 (en) * 1996-07-11 1998-01-22 Dsm N.V. Method for producing a felt, a felt obtainable in accordance withthe said method, and antiballistic-shaped parts fabricated from the said felt
US6408733B1 (en) * 2000-02-14 2002-06-25 William J. Perciballi Ceramic armor apparatus for multiple bullet protection
US6537654B1 (en) * 1999-11-04 2003-03-25 Sgl Technik Gmbh Protection products and armored products made of fiber-reinforced composite material with ceramic matrix

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4292882A (en) 1977-06-07 1981-10-06 Clausen Carol W Armor comprising a plurality of loosely related sheets in association with a frontal sheet comprising metal abrading particles
US5175040A (en) 1987-08-03 1992-12-29 Allied-Signal Inc. Flexible multi-layered armor
US5560971A (en) 1995-04-18 1996-10-01 Milliken Research Corporation Multi-layer material for suppression of ceramic shrapnel created during a ballistic event
WO1998002607A1 (en) * 1996-07-11 1998-01-22 Dsm N.V. Method for producing a felt, a felt obtainable in accordance withthe said method, and antiballistic-shaped parts fabricated from the said felt
US6537654B1 (en) * 1999-11-04 2003-03-25 Sgl Technik Gmbh Protection products and armored products made of fiber-reinforced composite material with ceramic matrix
US6408733B1 (en) * 2000-02-14 2002-06-25 William J. Perciballi Ceramic armor apparatus for multiple bullet protection

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015047506A3 (en) * 2013-06-28 2015-05-21 Von Hess John Antiballistic fabric and method of manufacturing the same
WO2021079144A1 (en) * 2019-10-25 2021-04-29 Tom Foster Ballistic protection material
US11835321B2 (en) 2019-10-25 2023-12-05 Advanced Matrix Composite Systems Limited Ballistic protection material

Similar Documents

Publication Publication Date Title
US11713945B2 (en) Flexible body armor
US8887312B2 (en) Helmets comprising ceramic for protection against high energy fragments and rifle bullets
US7631405B2 (en) Enhanced energy absorbing materials
KR20070058008A (en) Lightweight armor against mutiple high velocity bullets
US20100124862A1 (en) Woven bullet resistant fabric
KR20150141184A (en) Trauma reduction without ballistic performance reduction
WO2009151483A2 (en) Flexible knife resistant composite
JP2011508829A (en) Fabric construction with improved high-speed impact performance
US20070293109A1 (en) Composite material for stab, ice pick and armor applications
GB2154179A (en) Penetration-resistant textile sheet
JP2000507339A (en) Protective fabric
US20140137726A1 (en) Spall liners in combination with blast mitigation materials for vehicles
JP2011503494A (en) Polyolefin fiber reinforced rubber
WO2006048870A1 (en) Bulletproof devices
GB2232063A (en) Projectile resistant shield for protective garments
KR101875393B1 (en) Ballistic material and Praperation method thereof
KR102181940B1 (en) Body armor using a hybrid laminated pattern of a bulletproof fabric sheet and a carbon nanotube sheet
EP0672883B1 (en) Antitrauma packet
JPH0414277B2 (en)
CA2956760C (en) Flexible body armor
US20120167753A1 (en) Method and system for reducing blunt force trauma
NZ728679B (en) Flexible body armor

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KN KP KR KZ LC LK LR LS LT LU LV LY MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU LV MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 05802247

Country of ref document: EP

Kind code of ref document: A1