WO2020237360A1 - Coussinet de gilet pare-balles souple et procédé de fabrication associé - Google Patents

Coussinet de gilet pare-balles souple et procédé de fabrication associé Download PDF

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Publication number
WO2020237360A1
WO2020237360A1 PCT/CA2020/050705 CA2020050705W WO2020237360A1 WO 2020237360 A1 WO2020237360 A1 WO 2020237360A1 CA 2020050705 W CA2020050705 W CA 2020050705W WO 2020237360 A1 WO2020237360 A1 WO 2020237360A1
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WO
WIPO (PCT)
Prior art keywords
body armor
flexible body
pad
armor pad
fabric sheets
Prior art date
Application number
PCT/CA2020/050705
Other languages
English (en)
Inventor
Jack J. MASSARELLO
Robert A. SOTELO
Zachary B. Spencer
Brian E. Spencer
Andrew H. Weisberg
Original Assignee
Global Metallix Canada 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 Global Metallix Canada Inc. filed Critical Global Metallix Canada Inc.
Publication of WO2020237360A1 publication Critical patent/WO2020237360A1/fr

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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
    • F41H5/0471—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
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/18—Layered products comprising a layer of metal comprising iron or steel
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/024—Woven fabric
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/005—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile
    • 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/047—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material made of fibres or filaments
    • 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
    • F41H1/00—Personal protection gear
    • F41H1/02—Armoured or projectile- or missile-resistant garments; Composite protection fabrics
    • 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
    • F41H5/0428—Ceramic layers in combination with additional layers made of fibres, fabrics or plastics
    • F41H5/0435—Ceramic layers in combination with additional layers made of fibres, fabrics or plastics the additional 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
    • F41H5/0442—Layered armour containing metal
    • F41H5/0457—Metal layers in combination with additional layers made of fibres, fabrics or plastics
    • F41H5/0464—Metal layers in combination with additional layers made of fibres, fabrics or plastics the additional layers being only fibre- or fabric-reinforced layers
    • 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
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/02—Coating on the layer surface on fibrous or filamentary layer
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • B32B2260/023—Two or more layers
    • 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B32B2262/0269—Aromatic polyamide fibres
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres
    • 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
    • B32B2307/546—Flexural strength; Flexion stiffness
    • 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
    • B32B2307/558—Impact strength, toughness
    • 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
    • B32B2307/56—Damping, energy absorption
    • 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
    • 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
    • B32B2307/734—Dimensional stability
    • 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
    • B32B2437/00—Clothing
    • 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
    • B32B2571/02—Protective equipment defensive, e.g. armour plates, anti-ballistic clothing

Definitions

  • the present disclosure relates generally to body armor such as the one used in bulletproof vests, and more specifically to a flexible body armor pad and a process for making a flexible body armor pad.
  • a bulletproof vest has become an important component of law enforcement and combatants’ gear. They are designed to protect the wearer’s vital organs from injury caused by firearm projectiles.
  • a bulletproof vest is also known as a body armor carrier garment, and is comprised of a vest, which conforms to the body of a wearer.
  • a typical body armor carrier garment includes at least one front pouch and one rear pouch. Each of the front and rear pouches is adapted to carry ballistic armor and/or trauma plates. Most trauma plates are made of a combination of materials such as ceramic, metal, fabric, plastic or polymer.
  • Fabric trauma plates or body armor are often known as soft trauma plates. They are typically composed of layers of aramid fabrics such as Polyaramid Polyparaphenylene Terephthalamide known commercially as KEVLARTM 129 aramid fiber woven cloth, and is manufactured by E.I. DuPont de Nemours and Company. Other aramid fiber cloth may be used as well. Conventionally, a plurality of aramid fiber cloth sheets are overlaid with or stacked onto one another and disposed in the pouch within the carrier garment such as a jacket or a vest.
  • aramid fabrics such as Polyaramid Polyparaphenylene Terephthalamide known commercially as KEVLARTM 129 aramid fiber woven cloth, and is manufactured by E.I. DuPont de Nemours and Company. Other aramid fiber cloth may be used as well. Conventionally, a plurality of aramid fiber cloth sheets are overlaid with or stacked onto one another and disposed in the pouch within the carrier garment such as a jacket or a vest.
  • Soft trauma plates made of fabric typically do little to reduce trauma, so they are sometimes reinforced with sheets of metal, ceramic, or ultra-high molecular weight polyethylene (UHMWPE) such as the fabric known commercially as Spectra ® to add stiffness and some trauma protection.
  • UHMWPE ultra-high molecular weight polyethylene
  • KEVLARTM 129 aramid fiber is expensive and having many layers thereof to achieve trauma protection significantly adds to the cost of the garment.
  • a flexible body armor pad for use in a bulletproof carrier garment having at least one armor pad-carrying pouch.
  • the flexible body armor pad comprises one or more fabric sheets each coated with a tough or toughened polymer.
  • the plurality of fabric sheets are configured for fitting into the at least one armor pad carrying pouch for providing protection to a wearer of the bulletproof carrier garment
  • a bulletproof garment having at least one flexible body armor pad carrying pouch, and a body armor pad disposed in the at least one body armor pad carrying pouch.
  • the flexible body armor pad comprises a plurality of fabric sheets each coated with a tough polymer.
  • a process for making a flexible body armor pad for use in a bulletproof carrier garment having at least one armor pad-carrying pouch includes applying a resin of a tough polymer to a fabric sheet and curing the fabric sheet.
  • the fabric sheets can be stacked together to form the flexible body armor pad.
  • the process may include cutting one or more of the fabric sheets to fit into the armor pad-carrying pouch. The applying, curing and cutting may be repeated.
  • FIG. 1 is schematic diagram of a bulletproof vest featuring a body armor-pad carrying pouch
  • FIG. 2 is perspective view of a flexible body armor pad comprised of a stack of fabric sheets coated with a tough polymer, in accordance with an embodiment of the present disclosure
  • FIG. 3 is a schematic diagram of the bulletproof vest of FIG. 1 showing the flexible body armor pad of FIG. 2 disposed therein;
  • FIG. 4 is a process diagram depicting the steps of making the flexible body armor pad of FIG. 2;
  • FIG. 5 is a diagram of a body armor pad featuring the flexible body armor pad of FIG. 2 on the strike face thereof and a rigid plate arranged on the opposite face thereof, in accordance with an embodiment of the present disclosure;
  • FIG. 6 is an illustration of a body armor pad featuring a rigid plate on the strike face thereof and the flexible body armor pad of FIG. 2 arranged on the opposite face thereof, in accordance with another embodiment of the present disclosure
  • FIG. 7 is a diagram of a body armor pad featuring a rigid plate sandwiched between two of the flexible body armor pad of FIG. 2, in accordance with another embodiment of the present disclosure.
  • FIG. 8 is a diagram of a body armor pad featuring the flexible body armor pad of FIG. 2 sandwiched between two rigid plates, in accordance with yet another embodiment of the present disclosure.
  • a flexible body armor pad and a method of making a flexible body armor pad are disclosed. These embodiments are presented below by way of example only and not limitation. Exemplary flexible body armor pads and a method of making a flexible body armor pad are described. Suitably sized pieces of fabric sheets are coated with a tough polymer, stacked together and placed into an armor-pad carrying pouch of a bulletproof garment. At least some of the exemplary embodiments described herein provide superior ballistic resistance properties compared to conventional known alternatives.
  • directional terms such as“top”,“bottom”,“upwards”, “downwards”,“vertically” and“laterally” are used in the following description for the purpose of providing relative reference only, and are not intended to suggest any limitations on how any article is to be positioned during use, or to be mounted in an assembly or relative to an environment.
  • the use of the word“a” or“an” when used herein in conjunction with the term“comprising” may mean“one,” but it is also consistent with the meaning of“one or more,”“at least one” and“one or more than one.” Any element expressed in the singular form also encompasses its plural form. Any element expressed in the plural form also encompasses its singular form.
  • the term“plurality” as used herein means more than one, for example, two or more, three or more, four or more, and the like. [0019]
  • the terms “comprising”, “having”, “including”, and “containing”, and grammatical variations thereof, are inclusive or open-ended and do not exclude additional, un-recited elements and/or method steps.
  • the term“consisting essentially of’ when used herein in connection with a composition, use or method denotes that additional elements, method steps or both additional elements and method steps may be present, but that these additions do not materially affect the manner in which the recited composition, method, or use functions.
  • the term “consisting of’ when used herein in connection with a composition, use, or method excludes the presence of additional elements and/or method steps.
  • the term“toughened polymer” refers to a polymer resin loaded with a toughening agent.
  • the term“tough polymer” refers generally to both a polymer that is intrinsically tough (such as Polydicyclopentadiene) without requiring a toughening agent; as well as to a“toughened polymer” as defined above.
  • urethane and “polyurethane” are used interchangeably.
  • FIG. 1 is a simplified diagram of a bulletproof carrier garment for a body armor, exemplary of the embodiment of the present disclosure.
  • the carrier garment may be in the form of a bulletproof vest 100 as shown, or in the form of other types of suitable garment such as coveralls, sweaters, coats, and the like.
  • the bulletproof carrier garment, such as bulletproof vest 100 features a garment body 110 and a body armor pad-carrying pouch 120.
  • a body armor pad such as that depicted in FIG. 2, may be inserted into the pouch 120 to provide protection to a wearer of the garment.
  • FIG. 2 is a simplified block diagram a flexible armor pad 200, for use in a bulletproof carrier garment.
  • the flexible armor pad 200 may be disposed in pouch 120 of the bulletproof vest 100 of FIG. 1.
  • Flexible armor pad 200 includes one or more fabric sheets 210a, 210b, 210c, 210d, 210e (individually and collectively“fabric sheets 210”) each coated with a tough polymer 220.
  • Tough polymer 220 may be inherently tough polymer or toughened polymer as defined above.
  • each of the plurality of fabric sheets 210 is coated with a tough or toughened polymer and cured separately to avoid sticking with other fabric sheets.
  • sprayers, rollers or other means of applying tough polymer resin to fabric sheets may be used.
  • Fabric sheets 210 are stacked together, sized (cut) and shaped for fitting into armor pad-carrying pouch 120 of bulletproof vest 100, for providing protection to the wearer of bulletproof vest 100.
  • the plurality of fabric sheets 210 are all made of the same fabric whereas in other embodiments, some of the fabric sheets 210 may be comprised of a different fabric than the rest of the plurality of fabric sheets 210. In one embodiment, the plurality of fabric sheets 210 are all coated with the same tough polymer 220. In another embodiment, some of the plurality of fabric sheets 210 are coated with a different tough polymer 220 than the rest of the plurality of fabric sheets.
  • the tough polymer 220 used to coat the fabric sheets 210 is Polydicyclopentadiene (PDCPD).
  • the tough polymer 220 used to coat the plurality of fabric sheets 210 is a thermoplastic such as nylon or polyethylene.
  • the tough or toughened polymer used to coat fabric sheets 210 is a toughened thermoset, such as urethane, epoxy, or acrylic.
  • FIG. 3 depicts flexible body armor pad 200 placed within the armor pad-carrying pouch 120 of the bulletproof vest 100, in accordance with an embodiment of the present disclosure.
  • the bulletproof vest may have both a front pouch and a rear pouch, each suitable for holding a flexible body armor pad, such as pad 200.
  • a bulletproof vest may have additional pouches on the sides thereof, for holding other flexible body armor pads of different sizes.
  • the coating of the fabric sheets 210 with the tough polymer, such as PDCPD causes the individual fabric sheets to be loosely adhered to one another. Accordingly, when the sheets are stacked together to form a body armor pad, they are both flexible and slidable in relation to one another thus allowing the body armor pad to be flexible.
  • Body armor pad 200 can therefore bend in order to conform to the wearer’ s body.
  • Coating of the fabric sheets 210 with tough polymer also gives the fabric sheets 210 a form, and the sheets tend to retain their flat structure when placed in the armor pad-carrying pouch 120.
  • this alleviates the need to attach the individual fabric sheets together to prevent them from crumbling into a pile at the bottom of the armor pad-carrying pouch 120, as would typically be the case with dry fabric sheets.
  • At least one rigid plate is arranged with respect to the plurality of fabric sheets to provide a higher-grade ballistic pad.
  • FIG. 5 depicts a body armor pad 500 having a strike side 510 comprised of the flexible body armor 200 described above.
  • a rigid plate 250 is adhered to the fabric sheet farthest from the strike face.
  • FIG. 6 depicts a body armor pad 600 having a strike side 610 comprised of a rigid plate 250 having adhered thereto one of a plurality of fabric sheets 200.
  • FIG. 7 depicts a body armor pad comprised of two flexible body armor pads 200 having a rigid plate 250 sandwiched therebetween.
  • FIG. 8 depicts a body armor pad 800 comprised of two rigid plates having a flexible body armor pad sandwiched therebetween.
  • the rigid plates may be made of ceramic, steel, or any other suitable material of desired stiffness.
  • the thickness of the rigid plates may also be reduced to allow the rigid plates some degree of flexibility or malleability.
  • the plurality of fabric sheets contain carbon fiber.
  • Carbon fibers, which are also called graphite fibers, are fibers composed mostly of carbon atoms that exhibit several advantageous properties such as high stiffness, high tensile strength, low weight, high chemical resistance, high temperature tolerance and low thermal expansion.
  • the fabric sheets are comprised of carbon fiber and the tough polymer used to coat the carbon fiber, fabric sheets is PDCPD.
  • a first armor pad comprised a dry stack of fabric sheets of carbon fiber consisting of eighteen (18) plies and a second armor pad comprised a stack of fabric sheets of carbon fiber having six (6) plies coated with PDCPD were provided.
  • the ballistic test showed that the first dry armor pad of eighteen plies could not stop a proj ectile that the coated stack of six plies could.
  • the use of a polymer- based resin coating greatly improves the ballistic resistance of the body armor.
  • the six-ply flexible body armor pad tested is also advantageously a fraction of the cost of a comparable body armor pad made from KEVLARTM.
  • the flexible body armor made make from carbon fiber sheets coated with PDCPD has a smaller thickness than that of a comparable pad made from KEVLARTM making it more comfortable to wear and lighter in weight.
  • a typical conventional soft vest made of KevlarTM or Spectra ® is over 0.5 inches thick often closer to 0.625 to 0.75 inches, whereas in this embodiment the thickness is between 0.2 to 0.3 inches thick, on average 0.25 inches thick.
  • NIJ 0101.06 Level IIIA standard NIJ Standard- 0101.06, entitled“Ballistic Resistance of Body Armor,” is a minimum performance standard developed in collaboration with the Office of Law Enforcement Standards (OLES) of the National Institute of Standards and Technology (NIST) produced as part of the Standards and Testing Program of the National Institute of Justice (NIJ), Office of Justice Programs, U.S. Department of Justice.
  • OLES Office of Law Enforcement Standards
  • NIST National Institute of Standards and Technology
  • NIJ National Institute of Justice
  • Office of Justice Programs U.S. Department of Justice.
  • most conventional soft armor, particularly thinner versions require insertion of a plate called a“trauma plate” to reduce trauma to the sternum. This trauma is empirically captured in backface deformation data applicable to soft armor.
  • Embodiments exemplary of the present invention are not as thick as conventional armors. However, the embodiments do not conform to the wearer’s physical features as much as conventional soft armors. One benefit to this level of flexibility is that the embodiments offer stab resistance as well, whereas the conventional soft armor solutions do not offer comparable stab resistance due to being made of fabric based rather than structural based materials.
  • Flexibility of embodiments of the present invention may be further characterized by comparison with a thin layer of plastic, such as PETE (Polyethylene Terephthalate) used in many common water and soft drink bottles.
  • PETE Polyethylene Terephthalate
  • Some embodiments of the present invention have a the equivalent flexibility exhibited by a flat PETE material of about 12 inch square area.
  • the fabric sheets may comprise fiberglass while in another embodiment, the fabric sheets comprise Polyaramid Polyparaphenylene Terephthalamide (KEVLARTM). In yet another embodiment, the fabric sheets may comprise of ultra-high molecular weight polyethylene, such as Spectra ® .
  • a process 400 for making a flexible body armor pad for use in a bulletproof garment including at least one armor pad-carrying pouch summarized using a flowchart depicted in FIG. 4.
  • the process 400 starts at step 410.
  • a fabric sheet is cut into piece of fabric sheet sized to fit into the armor pad-carrying pouch of the desired garment.
  • a resin of a tough polymer is applied to the fabric sheet.
  • the appropriately sized piece of fabric sheet is cured and the resin forms a coat of tough polymer on the fabric sheet.
  • the number of sheets made is checked. If it is enough to make a single flexible armor pad, then the coated pieces of fabric sheets are stacked at step 460 to form the flexible body armor pad, and the process ends at step 470. If, however, more fabric sheets need to be made to make a single flexible armor pad, then the process returns to step 420.
  • the resin may be applied to fabric sheets and cured first, and thereafter cut into suitable sizes to fit into the pad carrying pouch.
  • Applying resin of the tough polymer to the fabric sheet may be done in a variety of ways, that will be familiar to persons skilled in the art.
  • the resin may be applied using a paint roller while in another embodiment, the resin may be sprayed onto the fabric sheets.
  • the fabric sheet is soaked in the resin until the fabric is saturated therewith.

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  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)

Abstract

L'invention concerne un coussinet de gilet pare-balles souple et un procédé de fabrication associé. Des feuilles de tissu sont revêtues d'un polymère dur ou durci, empilées ensemble, puis placées dans une poche destinée à contenir un coussinet de blindage dans un vêtement pare-balles. Les feuilles de tissu sont revêtues d'une résine par pulvérisation, trempage ou peinture du polymère dur, puis durcies séparément. Les feuilles revêtues présentent avantageusement des propriétés de résistance balistique supérieures, à un coût réduit par rapport au coût de coussinets de gilet pare-balles en fibres aramides comparables classiques. Le coussinet de gilet pare-balles souple selon l'invention se conforme aux contours du corps de l'utilisateur, et les feuilles de tissu revêtues conservent leur forme, de sorte qu'elles n'ont pas besoin d'être collées ou cousues ensemble.
PCT/CA2020/050705 2019-05-28 2020-05-25 Coussinet de gilet pare-balles souple et procédé de fabrication associé WO2020237360A1 (fr)

Applications Claiming Priority (2)

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US201962853508P 2019-05-28 2019-05-28
US62/853,508 2019-05-28

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2298670A1 (fr) * 1997-07-31 1999-02-11 Albert K. Lindstrom Structure resistante aux projectiles
CA2620324A1 (fr) * 2005-08-26 2007-08-30 Honeywell International Inc. Composites balistiques flexibles resistants a la prise de liquides, leur procede de fabrication et articles realises a partir de ces composites
CA2811273A1 (fr) * 2010-09-14 2012-03-22 Ppg Industries Ohio, Inc. Fibre de verre a faible densite et haute resistance pour applications balistiques
US20150343737A1 (en) * 2011-01-19 2015-12-03 Angel Armor, Llc Vacuum-sealed flexible ballistic resistant panel
CA3036506A1 (fr) * 2016-09-15 2018-03-29 Honeywell International Inc. Absorption d'energie cinetique elevee avec composites balistiques a faible deformation de face arriere

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2298670A1 (fr) * 1997-07-31 1999-02-11 Albert K. Lindstrom Structure resistante aux projectiles
CA2620324A1 (fr) * 2005-08-26 2007-08-30 Honeywell International Inc. Composites balistiques flexibles resistants a la prise de liquides, leur procede de fabrication et articles realises a partir de ces composites
CA2811273A1 (fr) * 2010-09-14 2012-03-22 Ppg Industries Ohio, Inc. Fibre de verre a faible densite et haute resistance pour applications balistiques
US20150343737A1 (en) * 2011-01-19 2015-12-03 Angel Armor, Llc Vacuum-sealed flexible ballistic resistant panel
CA3036506A1 (fr) * 2016-09-15 2018-03-29 Honeywell International Inc. Absorption d'energie cinetique elevee avec composites balistiques a faible deformation de face arriere

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