US20110167998A1 - Ballistic-resistant panel including high modulus ultra high molecular weight polyethylene tape - Google Patents

Ballistic-resistant panel including high modulus ultra high molecular weight polyethylene tape Download PDF

Info

Publication number
US20110167998A1
US20110167998A1 US11/881,863 US88186307A US2011167998A1 US 20110167998 A1 US20110167998 A1 US 20110167998A1 US 88186307 A US88186307 A US 88186307A US 2011167998 A1 US2011167998 A1 US 2011167998A1
Authority
US
United States
Prior art keywords
tape
ballistic
tensylon
resistant panel
layers
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.)
Granted
Application number
US11/881,863
Other versions
US7964267B1 (en
Inventor
Fielder Stanton Lyons
Jeffrey A. Mears
Gene C. Weedon
Kenneth C. Harding
Lisa Owen
Peter Anthony Russell
Joseph Mitchell
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.)
DuPont Safety and Construction Inc
Original Assignee
Tensylon High Performance Materials 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 US11/787,094 external-priority patent/US7964266B2/en
Priority claimed from US11/821,659 external-priority patent/US7976930B2/en
Application filed by Tensylon High Performance Materials Inc filed Critical Tensylon High Performance Materials Inc
Assigned to TENSYLON HIGH PERFORMANCE MATERIALS, INC. reassignment TENSYLON HIGH PERFORMANCE MATERIALS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: RUSSELL, Peter Anthony, MEARS, JEFFREY A., LYONS, FIELDER STANTON, HARDING, KENNETH C., MITCHELL, JOSEPH, OWEN, LISA, WEEDON, GENE C.
Priority to US11/881,863 priority Critical patent/US7964267B1/en
Priority to JP2010503017A priority patent/JP2010530052A/en
Priority to EP16152167.9A priority patent/EP3029411B1/en
Priority to PCT/US2008/004333 priority patent/WO2009008922A2/en
Priority to EP08826213.4A priority patent/EP2146843B1/en
Priority to AU2008275762A priority patent/AU2008275762B2/en
Priority to BRPI0810210 priority patent/BRPI0810210A2/en
Priority to US12/313,946 priority patent/US7923094B1/en
Priority to US12/455,279 priority patent/US7976932B1/en
Priority to US12/592,198 priority patent/US7972679B1/en
Priority to US13/134,742 priority patent/US8287987B1/en
Application granted granted Critical
Publication of US7964267B1 publication Critical patent/US7964267B1/en
Publication of US20110167998A1 publication Critical patent/US20110167998A1/en
Assigned to BAE SYSTEMS TENSYLON HIGH PERFORMANCE MATERIALS, INC. reassignment BAE SYSTEMS TENSYLON HIGH PERFORMANCE MATERIALS, INC. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: TENSYLON HIGH PERFORMANCE MATERIALS, INC.
Assigned to E. I. DU PONT DE NEMOURS AND COMPANY reassignment E. I. DU PONT DE NEMOURS AND COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BAE SYSTEMS TENSYLON HIGH PERFORMANCE MATERIALS INC.
Assigned to DUPONT SAFETY & CONSTRUCTION, INC. reassignment DUPONT SAFETY & CONSTRUCTION, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: E. I. DU PONT DE NEMOURS AND COMPANY
Active legal-status Critical Current
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
    • B29C33/68—Release sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
    • B29C70/20—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in a single direction, e.g. roofing or other parallel fibres
    • B29C70/202—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in a single direction, e.g. roofing or other parallel fibres arranged in parallel planes or structures of fibres crossing at substantial angles, e.g. cross-moulding compound [XMC]
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1207—Heat-activated adhesive
    • 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
    • B32B5/022—Non-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
    • 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
    • F41H5/0471—Layered armour containing fibre- or fabric-reinforced layers
    • F41H5/0478—Fibre- or fabric-reinforced layers in combination with plastics 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
    • F41H5/0471—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
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0658—PE, i.e. polyethylene characterised by its molecular weight
    • B29K2023/0683—UHMWPE, i.e. ultra high molecular weight polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2223/00—Use of polyalkenes or derivatives thereof as reinforcement
    • B29K2223/04—Polymers of ethylene
    • B29K2223/06—PE, i.e. polyethylene
    • B29K2223/0658—PE, i.e. polyethylene characterised by its molecular weight
    • B29K2223/0683—UHMWPE, i.e. ultra high molecular weight polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0089—Impact strength or 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
    • 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
    • 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
    • B32B2571/00—Protective equipment
    • B32B2571/02—Protective equipment defensive, e.g. armour plates, anti-ballistic clothing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24058—Structurally defined web or sheet [e.g., overall dimension, etc.] including grain, strips, or filamentary elements in respective layers or components in angular relation
    • Y10T428/24074—Strand or strand-portions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y10T428/2495—Thickness [relative or absolute]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2615—Coating or impregnation is resistant to penetration by solid implements
    • Y10T442/2623—Ballistic resistant

Definitions

  • the present invention relates to survivability enhancement and more particularly to a ballistic laminate constructed of a plurality of layers of non-fibrous high modulus ultra high molecular weight polyethylene.
  • Survivability enhancement is a well-known objective for armored vehicles or fixed or mobile armored structures in a combat or other high threat environment. If a high-energy projectile strikes a vehicle, the survivability of the occupants and the vehicle can be compromised by the release of spall, which is a spray of high velocity metallic or ceramic debris into the vehicle's interior. Vehicles, ships, aircraft, or structures in a high threat environment are therefore frequently equipped with a spall liner, which is designed to suppress the spall generated when a projectile penetrates the vehicle's interior.
  • Spall liners are typically comprised of a compressed panel.
  • the compressed panel usually includes a plurality of layers of high modulus, high tensile strength fabric bonded together by a resinous adhesive. If a projectile penetrates the armor of a vehicle, the spall liner absorbs the force of the projectile, with each separate layer delaminating and absorbing some portion of the force of the projectile and thereby dissipating the energy of the projectile as it advances through the spall liner.
  • spall liners Although many different spall liners have been proposed, further enhancements in spall suppression are highly desirable for increasing survivability of armored vehicles and structures.
  • the invention is a ballistic-resistant panel formed of a plurality of sheets of high modulus high molecular weight polyethylene tape.
  • the sheets of high modulus polyethylene tape include tape strips bonded together at their edges by heat and pressure or by thermoplastic adhesive combined with heat and pressure.
  • the strips of UHMWPE (ultra high molecular weight polyethylene) tape include a width of at least one inch and a modulus of greater than 1400 grams per denier.
  • the ballistic-resistant panel may include a backing layer of conventional high modulus fibers embedded in resin. A wide variety of adhesives were found acceptable for bonding the sheets of high modulus polyethylene tape together for forming the ballistic-resistant panels of the present invention.
  • the ballistic-resistant panel formed of UHMWPE (ultra high molecular weight polyethylene) Tensylon tape of the present invention includes several advantages over the prior art, including:
  • FIG. 1 is a schematic representation of a production process for laminating UHMWPE tape with adhesive in order to produce layers for forming a ballistic laminate according to the present invention.
  • FIG. 2 is a schematic representation of a second production process for laminating UHMWPE tape with adhesive for the production of a ballistic laminate according to the present invention.
  • FIG. 3 is a schematic representation in perspective view of two sheets or layers of adhesive-coated unidirectional non-fibrous UHMWPE tape prior to being fused together with heat and pressure to form a cross-plied laminate for use in the construction of a ballistic laminate according to the present invention.
  • FIG. 4 is a schematic representation as viewed from the side of two sheets of unidirectional non-fibrous UHMWPE tape prior to being fused together with heat and pressure to form a cross-plied laminate.
  • FIG. 5 is an illustration depicting the forming of a ballistic-resistant panel with cross-plied sheets of adhesive-coated Tensylon and cross-plied sheets of conventional high modulus fibers embedded in resin.
  • FIG. 6 is a graph depicting ballistic resistance at various molding temperatures and at two separate molding pressures for 2.0 psf panels having 100% Tensylon tape as the high modulus component.
  • the present invention relates to ballistic laminates having a plurality of layers of high modulus material, either all or some portion of which layers are constructed of non-fibrous, high modulus, ultra high molecular weight polyethylene tape of the type described in U.S. patent application Ser. No. 11/787,094, filed on Apr. 13, 2007, the contents of which are incorporated herein in their entirety by reference thereto.
  • the non-fibrous, high modulus, UHMWPE tape is produced by Tensylon High Performance Materials, Inc. of Monroe, N.C., and sold under the name TENSYLON®.
  • the term “high modulus” refers to materials having a modulus greater than 1,000 grams per denier (gpd).
  • adhesive was applied to one side of a plurality of webs of unidirectional UHMWPE tape.
  • the webs of adhesive-coated unitape were bonded into a unidirectional or unitape sheet, sheeted, and then cross-plied with additional sheets of adhesive-coated unitape.
  • the cross-plied sheets were molded by heat and pressure into a ballistic laminate.
  • Several conventional adhesives were tested for their effectiveness in forming a ballistic laminate. The test procedure included the following steps:
  • Tensylon tape was applied to one side of Tensylon 19,000 denier tape, hereinafter “Tensylon tape”.
  • the 19,000 denier Tensylon tape included nominal dimensions of 1.62 inches in width, 0.0025 inch in thickness, and a tensile modulus of at least 1,400 grams per denier (gpd).
  • Some of the adhesives were in the form of adhesive scrims, which were laminated to one side of the Tensylon tape, and others were resinous adhesive dispersed in a solvent, which was coated on a release film and then transferred to one side of the Tensylon tape.
  • the Tensylon tape has viscosity-average molecular weight of at least 2,000,000, a width of at least 1.0 inch, a thickness of between 0.0015 and 0.004 inch, a with to thickness ration of at least 400:1, a denier of 6,000 or greater, and a modulus of greater than 1,400 grams per denier.
  • a laminator/fuser 20 for laminating adhesive scrims to the Tensylon tape.
  • the laminator/fuser 20 included an unwind shaft 22 with eight rolls of 1.62-inch wide Tensylon tape 24 assembled thereon. Each roll included independent brake tension controls.
  • a second unwind shaft 26 contained a roll of adhesive 28 .
  • a third unwind shaft 30 and forth unwind shaft 32 contained rolls of silicone release paper 34 .
  • the Tensylon tape 24 , adhesive 28 , and silicone release paper 34 were laminated together at nip rolls 36 thereby forming adhesive coated Tensylon web 38 sandwiched between the two silicone release liners 34 .
  • the silicone release liners 34 prevented the adhesive coated Tensylon web 38 from sticking to any rollers in the oven during fusing.
  • the adhesive coated Tensylon web 38 was then conveyed through a fusing oven 40 to cure the thermoplastic adhesive.
  • a chilled platen 42 cooled the Tensylon/adhesive laminate 38 as it exited the fusing oven 40 .
  • the release liners 34 were removed from the Tensylon/adhesive laminated web 38 thereby formed an adhesive-coated roll of unidirectional Tensylon 44 at a nominal width of 13.0 inches.
  • the laminator/fuser operated at a line speed of 10 to 20 feet per minute and with fusing oven 40 temperatures between 230° F. and 260° F.
  • Adhesives Tested for effectiveness in bonding Tensylon tape into a ballistic laminate Adhesive Chemical Melt Temperatures Measured Coat Code Composition (degrees C.) Weight (gsm) A1 Polyamide 100-115 6.2 B1 Polyolefin 93-105 6.0 C1 Ethylene Vinyl 98-112 4.7 Acetate Copolymer D1 Polyurethane 70-100 16.7 E1 Ethylene Acrylic 88-105 N/A Acid Copolymer F1 Polystyrene Isoprene N/A 6.0 Copolymer G1 Polyamide N/A 5.0 H1 Polyurethane N/A 5.0
  • Adhesives A1 through E1 were applied to the Tensylon tape by the laminator/fuser 20 depicted in FIG. 1 .
  • Adhesives F1 through H1 which were dispersed in solvents, were coated on a release film and then transferred to one side of the Tensylon tape.
  • FIGS. 3 and 4 depict two sheets 60 and 62 of adhesive-coated unitape consisting of strips of Tensylon UHMWPE tape 64 fused at joint areas 66 .
  • the joint areas 66 are depicted for clarity in describing the direction of orientation of the UHMWPE tape in FIG. 3 , it should be understood that the UHMWPE tape strips 64 are rendered substantially transparent when bonded as described herein therefore making the joint areas 66 appear homogenous with the sheet.
  • Tensylon tape The bonding of non-fibrous, high modulus, ultra high molecular weight polyethylene Tensylon tape is described in detail in U.S. patent application Ser. No. 11/787,094, filed on Apr. 13, 2007, which has been incorporated herein by reference.
  • the top sheet 60 of adhesive-coated unitape is oriented at 90° with respect to the bottom sheet 62 .
  • An adhesive layer 68 shown as a transparent layer of adhesive in FIGS. 3 and 4 , is bonded to each sheet 60 , 62 in the manner described above.
  • the two sheets 60 , 62 of adhesive-coated unitape are pressed together with heat and pressure which causes the two sheets to bond together into a cross-plied sheet of Tensylon UHMWPE with the bonded sheets cross-plied in the 0° and 90° direction.
  • a simplified illustration depicts the forming of the preferred embodiment of a ballistic-resistant panel with cross-plied sheets or laminates of adhesive-coated Tensylon 70 and 72 and cross-plied sheets of conventional high modulus fibers embedded in resin 74 and 76 .
  • the cross-plied sheets of adhesive-coated Tensylon 70 and 72 are stacked on top of stacked cross-plied sheets of conventional high modulus fibers 74 and 76 and pressure and heat are applied to bond the sheets into a ballistic-resistant panel.
  • a 2.0 psf ballistic-resistant panel having a 50/50 ratio by weight of Tensylon and conventional fiber a plurality of sheets of cross-plied conventional fibers embedded in resin are laid down until a weight of approximately 2.0 psf is obtained.
  • Cross-plied sheets of adhesive-coated Tensylon are then stacked on top of the cross-plied sheets of conventional high modulus fibers until a total weight of approximately 2.0 psf was obtained. Heat and pressure are then applied to fuse the cross-plied layers of Tensylon and conventional fibers into a ballistic-resistant panel.
  • the ballistic-resistant panels were then tested for ballistic resistance.
  • Projectiles of 0.30 caliber FSP (Fragment Simulated Projectile) per MIL-P-46593A were fired at the 2.0 psf test panels to obtain ballistics properties of the panels bonded with the various adhesives.
  • the velocities in fps (feet per second) at which 50% of the projectiles failed to penetrate the target (V 50 ) were determined per MIL-STD-662F.
  • Data for the resultant ballistic-resistant panels formed at 150 psi are shown in Table 2 and data for the resultant ballistic-resistant panels formed at 3,000 psi are shown in Table 3 below:
  • Ballistic-resistant panels were then prepared to test the performance of Tensylon tape versus conventional high modulus fibers.
  • Dyneema HB25 cross-plied fibers embedded in resin available from DSM Dyneema B.V., Urmond, the Netherlands, were formed into a 2.0-psf panel.
  • a panel formed of 100% HB25 as the high modulus component was used as a control sample or baseline.
  • a nominal 2.0-psf panels was also formed of 100% high modulus Tensylon tape.
  • Table 4 includes, left to right in columns 1 to 7:1) the high modulus composition, 2) the baseline V 50 test result for panels formed of one high modulus component, 3) the V 50 test result for panels formed with a Tensylon strike-face, 4) the V 50 test result for panels formed with HB25 as the strike-face, 5) the calculated V 50 , and 6) the delta V 50 which is the difference between the calculated V 50 and the actual V 50 recorded in columns 3, 4, or 5.
  • the Tensylon C (Ten C) and Tensylon A (Ten A) were panels molded with different adhesives.
  • the Rule of Mixtures is a good predictor of the final V 50 value, and there is no effect from the manner in which the separate high modulus components are combined in the panel.
  • the V 50 for alternating layers of Tensylon tape and HB25 which is represented by line 4 of the table, is predicted by the Rule of Mixtures.
  • the absolute value of the Delta V 50 is significantly greater than 50 fps for several of the test panels, it implies that the order in which the high modulus components are arranged in the ballistic-resistant panel is statistically significant.
  • the Tensylon tape is placed with respect to front or back in the ballistic-resistant panel has a significant effect on the ballistic performance of the panel.
  • a Delta V 50 that is greater than +50 fps indicates a higher ballistic resistance result than expected by the Rule of Mixtures and thus an advantageous configuration of high modulus components within the panel.
  • a Delta V 50 that is less than ⁇ 50 fps indicates a lower ballistic resistance result than expected by the Rule of Mixtures and thus an undesirable configuration of high modulus components within the panel.
  • Table 5 includes ballistic test results for panels of various compositions of Tensylon UHMWPE tape and HB25 fibers molded at 150 psi and 210° F. The ballistic-resistant panels were tested with 0.30 caliber FSP rounds and the V 50 velocities recorded.
  • Table 6 includes ballistic test results for 3.8 nominal psf ballistic-resistant panels composed of Tensylon UHMWPE tape and aramid fabric molded with SURLYN® resin at 150 psi and 250° F.
  • SURLYN® is an ethylene/methacrylic acid copolymer available from DuPont Packaging and Industrial Polymers of Wilmington, Del.
  • the aramid fabric is produced commercially by Barrday, Inc. under the trade name Barrday Style 1013.
  • the aramid fabric was composed of 3,000 denier Kevlar® 29 in fabrics of 14 oz/yd 2 weight.
  • One ply of 1.5-mil CAF film (SURLYN® resin) was used between each ply of Tensylon tape. (As a result of aramid fabric and Tensylon tape weight variances, it was difficult to match areal densities.
  • the ballistic-resistant panels were tested with 0.30 caliber FSP rounds and the V 50 velocities recorded.
  • test panel with a Tensylon tape strike face had ballistic resistance of 2632 fps, which was significantly higher than that predicted by the Rule of Mixtures.
  • Table 7 includes ballistic test results for 3.8 nominal psf ballistic-resistant panels composed of Tensylon UHMWPE tape and HB25 and tested with an NIJ Level III M80 ball projectile (U.S. military designation for 7.62 mm full metal jacketed bullet).
  • the Tensylon UHMWPE tape had a beneficial effect when placed as the strike-face of the ballistic-resistant panel, including a V50 velocity of 2880 fps for the ballistic-resistant panel in which the Tensylon tape comprised the strike-face and 50% of the high modulus component and a V50 velocity of 2897 fps for the ballistic-resistant panel in which the Tensylon tape comprised the strike-face and 25% of the high modulus component.
  • Table 8 includes ballistic test results for a spall liner for simulated armor with facings of aluminum and High Hardness Steel (HHS) and various backing compositions including various weights of HB25 and various compositions including HB25 and Tensylon tape. All of the armor designs including Tensylon tape as a high modulus component had positive results for rifle threat relative to the requirement.
  • HHS High Hardness Steel
  • Table 9 includes ballistic test results for a simulated spall liner including the following various configurations: 1) a baseline configuration of 1 ⁇ 4′′ Ultra High Hard Steel (UHHS) and 1.1 psf of KEVLAR® Reinforced Plastic (KRP), 2) baseline plus 25-mm of HB25 spaced 25-mm behind the KRP, 3) baseline plus 25-mm of high modulus components comprised of 25% Tensylon and 75% HB25 spaced 25-mm behind the KRP, and 4) baseline plus 25-mm of high modulus components comprised of 50% Tensylon and 50% HB25 spaced 25-mm behind the KRP.
  • Test results included the spall cone angle measured at layers 1 and 3 and the average number of fragments that penetrated at layers 1 and 3. The spall cone angle and average number of fragments through for a spall liner including 25% and 50% Tensylon tape were similar to those obtained for a spall liner of 100% HB25.
  • ballistic-resistant panels were constructed using Tensylon tape as the high modulus component to determine the effect of molding pressure and temperature on ballistic resistance.
  • Table 10 includes ballistic test results for 2.0 psf panels comprised of cross-plied layers of 1.62-inch width Tensylon UHMWPE tape, with a first series of panels molded at 150 psi and at various temperatures and a second series of panels molded at 500 psi and at various temperatures.
  • the cross-plied layers of Tensylon UHMWPE tape were interleaved with a low density polyolefin scrim (Spunfab PO4605) and pressed and bonded at the various pressures and temperatures recorded in the table.
  • Tensylon* was comprised of layers of 1.62-inch Tensylon tape woven into a fabric using a basket weave with the weft arranged at 90° with respect to the warp.
  • the woven layers were pressed with an 18-micron low density polyethylene film to form a 2.2 psf ballistic-resistant panel.
  • the ballistic-resistant panels were tested with 0.30 caliber FSP rounds per MIL-P-46593A and the average V 50 velocities recorded.
  • the embodiments of ballistic-resistant panels described above were prepared at specific parameters, other variations of processing conditions are possible without departing from the scope of the invention.
  • the Tensylon UHMWPE tape in adjacent layers of the ballistic-resistant panel were oriented at 0° and 90° respectively, other orientations are possible, such as 0° and 45° in adjacent layers, or 0°, 45°, and 90° for each three successive layers.
  • the direction of orientation of the tape in each of the interleaved layers of non-fibrous ultra high molecular weight polyethylene tape is at an angle of at least 30 degrees with respect to the direction of orientation of the tape in an adjacent layer.
  • the specific molding temperatures tested herein were between 180 and 280° F., it is believed that molding temperatures between 150° F.
  • the Tensylon tape was woven into a fabric using a basket weave, it is within the scope of the present invention to form the Tensylon tape into fabric using any fabric weave, such as plain weave, twill weave, satin weave, and the like.

Abstract

A ballistic-resistant panel in which the entire panel or a strike-face portion thereof is formed of a plurality of sheets of high modulus high molecular weight polyethylene tape. The sheets of high modulus polyethylene tape can be in the form of cross-plied laminated layers of tape strips or a woven fabric of tape strips. The strips of UHMWPE tape include a width of at least one inch and a modulus of greater than 1400 grams per denier. The ballistic-resistant panel may include a backing layer of conventional high modulus fibers embedded in resin. A wide variety of adhesives were found acceptable for bonding the cross-plied layers of high modulus polyethylene tape together for forming the ballistic-resistant panels of the present invention.

Description

  • This application is a Continuation-In-Part of U.S. patent application Ser. No. 11/821,659, filed on Jun. 25, 2007 and entitled “Non-Fibrous High Modulus Ultra High Molecular Weight Polyethylene Tape for Ballistic Applications” and is a Continuation-In-Part of U.S. patent application Ser. No. 11/787,094, filed on Apr. 13, 2007 and entitled “Wide Ultra High Molecular Weight Polyethylene Sheet and Method of Manufacture”, of which the entire contents of said applications are incorporated herein in their entirety by reference thereto.
    • FIELD OF THE INVENTION
  • The present invention relates to survivability enhancement and more particularly to a ballistic laminate constructed of a plurality of layers of non-fibrous high modulus ultra high molecular weight polyethylene.
    • BACKGROUND OF THE INVENTION
  • Survivability enhancement is a well-known objective for armored vehicles or fixed or mobile armored structures in a combat or other high threat environment. If a high-energy projectile strikes a vehicle, the survivability of the occupants and the vehicle can be compromised by the release of spall, which is a spray of high velocity metallic or ceramic debris into the vehicle's interior. Vehicles, ships, aircraft, or structures in a high threat environment are therefore frequently equipped with a spall liner, which is designed to suppress the spall generated when a projectile penetrates the vehicle's interior.
  • Spall liners are typically comprised of a compressed panel. The compressed panel usually includes a plurality of layers of high modulus, high tensile strength fabric bonded together by a resinous adhesive. If a projectile penetrates the armor of a vehicle, the spall liner absorbs the force of the projectile, with each separate layer delaminating and absorbing some portion of the force of the projectile and thereby dissipating the energy of the projectile as it advances through the spall liner.
  • Although many different spall liners have been proposed, further enhancements in spall suppression are highly desirable for increasing survivability of armored vehicles and structures.
    • SUMMARY OF THE INVENTION
  • The invention is a ballistic-resistant panel formed of a plurality of sheets of high modulus high molecular weight polyethylene tape. The sheets of high modulus polyethylene tape include tape strips bonded together at their edges by heat and pressure or by thermoplastic adhesive combined with heat and pressure. The strips of UHMWPE (ultra high molecular weight polyethylene) tape include a width of at least one inch and a modulus of greater than 1400 grams per denier. The ballistic-resistant panel may include a backing layer of conventional high modulus fibers embedded in resin. A wide variety of adhesives were found acceptable for bonding the sheets of high modulus polyethylene tape together for forming the ballistic-resistant panels of the present invention.
    • OBJECTS AND ADVANTAGES
  • The ballistic-resistant panel formed of UHMWPE (ultra high molecular weight polyethylene) Tensylon tape of the present invention includes several advantages over the prior art, including:
      • (1) The ballistic resistance is improved over ballistic panels formed entirely of conventional ballistic fibers.
      • (2) The UHMWPE Tensylon tape of the present invention can be produced at a substantially lower price than conventional ballistic fibers. Significant cost savings are therefore obtained by replacing a portion of the conventional high modulus component with the high modulus UHMWPE tape of the present invention.
      • (3) Forming the ballistic-resistant panel or the strike-face portion of monolithic UHMWPE tape reduces or eliminates joints or seams, thereby improving the ballistic resistance of the ballistic laminate.
      • (4) Forming the strike-face portion of monolithic UHMWPE tape provides structural support to the laminate and reduces delamination after a ballistic event.
      • (5) The UHMWPE tape of the present invention may be formed into sheets or layers by weaving the wide tapes into a woven structure such as a simple basket weave or by simply butting together the strips of tape edge to edge, or by overlapping the edges slightly, and then pressing with pressure, heat and pressure, or by coating with adhesive and pressing. This is vastly simpler and cheaper than forming a sheet or layer from fibers, which requires many more individual ends or packages and lamination with an adhesive or processing by weaving, knitting, or cross-stitching.
      • (6) The amount of adhesive required to mold a ballistic laminate with a strike-face according to the present invention is significantly lower than that required for a ballistic laminate formed of conventional ballistic fibers. The smooth surface area of the high modulus tape used in the strike-face portion of the ballistic-resistant panel enables a lower adhesive to UHMWPE ratio than is available with ballistics panels formed from conventional UHMWPE. The effectiveness of conventional ballistic-resistant panels is generally negatively affected by the higher adhesive ratios, as the adhesive portion adds weight to the laminate but does not contribute to the ballistic resistance unless the adhesive is specifically designed to produce controlled delamination.
  • These and other objects and advantages of the present invention will be better understood by reading the following description along with reference to the drawings.
    • DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a schematic representation of a production process for laminating UHMWPE tape with adhesive in order to produce layers for forming a ballistic laminate according to the present invention.
  • FIG. 2 is a schematic representation of a second production process for laminating UHMWPE tape with adhesive for the production of a ballistic laminate according to the present invention.
  • FIG. 3 is a schematic representation in perspective view of two sheets or layers of adhesive-coated unidirectional non-fibrous UHMWPE tape prior to being fused together with heat and pressure to form a cross-plied laminate for use in the construction of a ballistic laminate according to the present invention.
  • FIG. 4 is a schematic representation as viewed from the side of two sheets of unidirectional non-fibrous UHMWPE tape prior to being fused together with heat and pressure to form a cross-plied laminate.
  • FIG. 5 is an illustration depicting the forming of a ballistic-resistant panel with cross-plied sheets of adhesive-coated Tensylon and cross-plied sheets of conventional high modulus fibers embedded in resin.
  • FIG. 6 is a graph depicting ballistic resistance at various molding temperatures and at two separate molding pressures for 2.0 psf panels having 100% Tensylon tape as the high modulus component.
    • Table of Nomenclature
  • The following is a listing of part numbers used in the drawings along with a brief description:
  • Part Number Description
    20 laminator/fuser
    22 unwind shaft
    24 Tensylon tape
    26 second unwind shaft
    28 adhesive
    30 third unwind shaft
    32 fourth unwind shaft
    34 silicone release paper
    36 nip rolls
    38 adhesive coated Tensylon web
    40 fusing oven
    42 chilled platen
    44 adhesive coated unidirectional tape
    50 laminator/fuser
    52 adhesive coated release roll
    54 release liner
    60 top sheet of adhesive-coated unitape
    62 bottom sheet of adhesive-coated unitape
    64 strip of Tensylon unidirectional tape
    66 joint areas
    68 adhesive layer
    70 cross-plied sheet of adhesive-coated Tensylon
    72 cross-plied sheet of adhesive-coated Tensylon
    74 cross-plied sheet of convention fibers in resin
    76 cross-plied sheet of convention fibers in resin
    • DETAILED DESCRIPTION OF THE INVENTION
  • The present invention relates to ballistic laminates having a plurality of layers of high modulus material, either all or some portion of which layers are constructed of non-fibrous, high modulus, ultra high molecular weight polyethylene tape of the type described in U.S. patent application Ser. No. 11/787,094, filed on Apr. 13, 2007, the contents of which are incorporated herein in their entirety by reference thereto. The non-fibrous, high modulus, UHMWPE tape is produced by Tensylon High Performance Materials, Inc. of Monroe, N.C., and sold under the name TENSYLON®. As used in this application, the term “high modulus” refers to materials having a modulus greater than 1,000 grams per denier (gpd).
  • In order to form an improved strike-face for a ballistic-resistant panel according to the present invention, adhesive was applied to one side of a plurality of webs of unidirectional UHMWPE tape. The webs of adhesive-coated unitape were bonded into a unidirectional or unitape sheet, sheeted, and then cross-plied with additional sheets of adhesive-coated unitape. The cross-plied sheets were molded by heat and pressure into a ballistic laminate. Several conventional adhesives were tested for their effectiveness in forming a ballistic laminate. The test procedure included the following steps:
      • (1) Comparing various adhesives for bonding UHMWPE tape for the purpose of forming unidirectional material for use in bidirectional cross ply;
      • (2) Evaluating unidirectional tape lamination capability and consolidation capability;
      • (3) Forming each adhesive variant into a nominal 2.0 pounds per square foot (pst) test panel at 150 psi and into a second 2.0 psf panel at 3000 psi; and
      • (4) Testing the resultant test panels for ballistic performance.
  • In order to test the effectiveness of TENSYLON® non-fibrous, high modulus UHMWPE tape as a high modulus component in ballistic-resistant panels, adhesive was applied to one side of Tensylon 19,000 denier tape, hereinafter “Tensylon tape”. The 19,000 denier Tensylon tape included nominal dimensions of 1.62 inches in width, 0.0025 inch in thickness, and a tensile modulus of at least 1,400 grams per denier (gpd). Some of the adhesives were in the form of adhesive scrims, which were laminated to one side of the Tensylon tape, and others were resinous adhesive dispersed in a solvent, which was coated on a release film and then transferred to one side of the Tensylon tape. Preferably, the Tensylon tape has viscosity-average molecular weight of at least 2,000,000, a width of at least 1.0 inch, a thickness of between 0.0015 and 0.004 inch, a with to thickness ration of at least 400:1, a denier of 6,000 or greater, and a modulus of greater than 1,400 grams per denier.
  • With reference to FIG. 1, there is shown a laminator/fuser 20 for laminating adhesive scrims to the Tensylon tape. The laminator/fuser 20 included an unwind shaft 22 with eight rolls of 1.62-inch wide Tensylon tape 24 assembled thereon. Each roll included independent brake tension controls. A second unwind shaft 26 contained a roll of adhesive 28. A third unwind shaft 30 and forth unwind shaft 32 contained rolls of silicone release paper 34. The Tensylon tape 24, adhesive 28, and silicone release paper 34 were laminated together at nip rolls 36 thereby forming adhesive coated Tensylon web 38 sandwiched between the two silicone release liners 34. The silicone release liners 34 prevented the adhesive coated Tensylon web 38 from sticking to any rollers in the oven during fusing. The adhesive coated Tensylon web 38 was then conveyed through a fusing oven 40 to cure the thermoplastic adhesive. A chilled platen 42 cooled the Tensylon/adhesive laminate 38 as it exited the fusing oven 40. After cooling, the release liners 34 were removed from the Tensylon/adhesive laminated web 38 thereby formed an adhesive-coated roll of unidirectional Tensylon 44 at a nominal width of 13.0 inches. The laminator/fuser operated at a line speed of 10 to 20 feet per minute and with fusing oven 40 temperatures between 230° F. and 260° F.
  • For those adhesives in the form of a resin suspended in a solvent, the resin was applied to one side of a silicone release sheet. With reference to FIG. 2, there is shown a laminator/fuser 50 in which the adhesive-coated silicone release roll 52 was mounted on an unwind shaft 30 with Tensylon tape 24 on unwind shaft 22. The adhesive-coated silicone release web 52 was then nipped against the 1.62-inch wide Tensylon webs that were butt-jointed together at the nip 36. At the nip the adhesive was transferred to the Tensylon web and the eight 1.62-inch Tensylon webs were fused into one sheet as has been described in U.S. patent application Ser. No. 11/787,094, filed Apr. 13, 2007, the contents of which are incorporated herein in their entirety by reference thereto. The adhesive-coated Tensylon 38 was then conveyed through the remainder of the laminator/fuser 50 and the release liner 54 removed from the 13.0-inch nominal width Tensylon/adhesive-coated web 38.
  • The specific adhesives tested and significant measured properties are presented in Table 1 below:
  • TABLE 1
    Adhesives Tested for effectiveness in bonding
    Tensylon tape into a ballistic laminate:
    Adhesive Chemical Melt Temperatures Measured Coat
    Code Composition (degrees C.) Weight (gsm)
    A1 Polyamide 100-115  6.2
    B1 Polyolefin 93-105 6.0
    C1 Ethylene Vinyl 98-112 4.7
    Acetate Copolymer
    D1 Polyurethane 70-100 16.7 
    E1 Ethylene Acrylic 88-105 N/A
    Acid Copolymer
    F1 Polystyrene Isoprene N/A 6.0
    Copolymer
    G1 Polyamide N/A 5.0
    H1 Polyurethane N/A 5.0
  • The adhesives tested included Polyethylene-PO4401 (A1), Polyethylene-PO4605 (B1), Polyethylene-DO184B (C1), Polyurethane-DO187H (D1), and Polyethylene-DO188Q (E1), which are all available from Spunfab, Ltd. of Cayahoga Falls, Ohio; Kraton D1161P (F1), which is available from Kraton Polymers U.S., LLC of Houston, Tex.; Macromelt 6900 (G1), which is available from Henkel Adhesives of Elgin, Ill.; and Noveon-Estane 5703 (H1), which is available from Lubrizol Advanced Materials, Inc. of Cleveland, Ohio. Adhesives A1 through E1 were applied to the Tensylon tape by the laminator/fuser 20 depicted in FIG. 1. Adhesives F1 through H1, which were dispersed in solvents, were coated on a release film and then transferred to one side of the Tensylon tape.
  • The adhesive-coated unidirectional Tensylon tape, commonly termed “unitape” and consisting of eight strips of UHMWPE tape fused at their edges, was then cut into 12-inch by 12-inch sheets. FIGS. 3 and 4 depict two sheets 60 and 62 of adhesive-coated unitape consisting of strips of Tensylon UHMWPE tape 64 fused at joint areas 66. The joint areas 66 are depicted for clarity in describing the direction of orientation of the UHMWPE tape in FIG. 3, it should be understood that the UHMWPE tape strips 64 are rendered substantially transparent when bonded as described herein therefore making the joint areas 66 appear homogenous with the sheet. The bonding of non-fibrous, high modulus, ultra high molecular weight polyethylene Tensylon tape is described in detail in U.S. patent application Ser. No. 11/787,094, filed on Apr. 13, 2007, which has been incorporated herein by reference. The top sheet 60 of adhesive-coated unitape is oriented at 90° with respect to the bottom sheet 62. An adhesive layer 68, shown as a transparent layer of adhesive in FIGS. 3 and 4, is bonded to each sheet 60, 62 in the manner described above. As the adhesive is thermoplastic, the two sheets 60, 62 of adhesive-coated unitape are pressed together with heat and pressure which causes the two sheets to bond together into a cross-plied sheet of Tensylon UHMWPE with the bonded sheets cross-plied in the 0° and 90° direction.
  • To form a ballistic-resistant panel, cross-plied sheets of adhesive-coated Tensylon were stacked until a stack of cross-plied Tensylon of approximately 2.0 psf (pounds per square foot) was obtained. Several of the nominal 2.0 psf stacks were pressed at a pressure of 150 psi and several at a pressure of 3,000 psi. The press cycle included 30 minutes at a temperature of 250° F. to 260° F. and cooling under full pressure to below 120° F. before release thereby forming ballistic-resistant panels of nominally 2.0 psf areal density.
  • With reference to FIG. 5, a simplified illustration depicts the forming of the preferred embodiment of a ballistic-resistant panel with cross-plied sheets or laminates of adhesive-coated Tensylon 70 and 72 and cross-plied sheets of conventional high modulus fibers embedded in resin 74 and 76. The cross-plied sheets of adhesive-coated Tensylon 70 and 72 are stacked on top of stacked cross-plied sheets of conventional high modulus fibers 74 and 76 and pressure and heat are applied to bond the sheets into a ballistic-resistant panel. As an example, to form a 2.0 psf ballistic-resistant panel having a 50/50 ratio by weight of Tensylon and conventional fiber, a plurality of sheets of cross-plied conventional fibers embedded in resin are laid down until a weight of approximately 2.0 psf is obtained. Cross-plied sheets of adhesive-coated Tensylon are then stacked on top of the cross-plied sheets of conventional high modulus fibers until a total weight of approximately 2.0 psf was obtained. Heat and pressure are then applied to fuse the cross-plied layers of Tensylon and conventional fibers into a ballistic-resistant panel.
  • The ballistic-resistant panels were then tested for ballistic resistance. Projectiles of 0.30 caliber FSP (Fragment Simulated Projectile) per MIL-P-46593A were fired at the 2.0 psf test panels to obtain ballistics properties of the panels bonded with the various adhesives. The velocities in fps (feet per second) at which 50% of the projectiles failed to penetrate the target (V50) were determined per MIL-STD-662F. Data for the resultant ballistic-resistant panels formed at 150 psi are shown in Table 2 and data for the resultant ballistic-resistant panels formed at 3,000 psi are shown in Table 3 below:
  • TABLE 2
    Data Results for Ballistic-resistant panels of UHMWPE
    tape formed with various adhesives at Molding Pressure
    150 psi and Ballistic Test Results:
    Adhe- Average
    Adhesive sive Adhe- Areal 0.30 Cal
    Descrip- Weight sive Density FSP V50
    tion Adhesive ID (gsm) (wt %) (psf) (fps)
    A1 Polyamide 5.93 10.4 2.01 1873
    A1 Polyamide 3.10 5.7 1.88 1984
    C1 Ethylene Vinyl 5.93 10.4 2.03 1957
    Acetate
    Copolymer
    D1 Polyurethane 15.25 22.9 2.02 1818
    E1 Ethylene Acrylic 5.93 10.4 2.02 1832
    Acid Copolymer
    B1 Polyolefin 5.93 10.4 2.01 1937
    B1 Polyolefin 3.10 5.7 2.05 1878
    F1 Polystyrene- 7.40 12.6 2.01 2057
    Isoprene
    Copolymer
    F1 Polystyrene- 5.70 10.0 2.07 2124
    Isoprene
    Copolymer
    Dyneema Polystyrene- — — 1.99 2275
    HB2 Isoprene
    Dyneema Polyurethane — — 2.00 2192
    HB25
  • TABLE 3
    Data Results for Ballistic-resistant panels of UHMWPE
    tape formed with various adhesives at Molding Pressure
    3,000 psi and Ballistic Test Results:
    Adhe- Average
    Adhesive sive Adhe- Areal 0.30 Cal
    Descrip- Weight sive Density FSP V50
    tion Adhesive ID (gsm) (wt %) (psf) (fps)
    A1 Polyamide 5.93 10.4 1.94 1915
    C1 Ethylene Vinyl 5.93 10.4 1.96 1963
    Acetate
    Copolymer
    B1 Polyolefin 5.93 10.4 1.96 2014
    B1 Polyolefin 3.10 5.7 2.02 1970
    F1 Polystyrene- 7.40 12.6 2.03 2242
    Isoprene
    Copolymer
    F1 Polystyrene- 5.70 10.0 2.02 2136
    Isoprene
    Copolymer
    Dyneema Polystyrene- — — 2.00 2541
    HB2 Isoprene
    Dyneema Polyurethane — — 2.00 2386
    HB25
  • A summary of the data suggest that the 3000 psi ballistic-resistant panels molded with adhesives A1, B1, and C1 rated slightly higher for ballistic performance than did the 150 psi panels. Adhesives B1 and C1 were essentially equal in performance. The V50 results suggest that all of the test panels were acceptable for ballistic resistance of 0.30 caliber fragment simulated projectiles.
  • Ballistic-resistant panels were then prepared to test the performance of Tensylon tape versus conventional high modulus fibers. Dyneema HB25 cross-plied fibers embedded in resin, available from DSM Dyneema B.V., Urmond, the Netherlands, were formed into a 2.0-psf panel. A panel formed of 100% HB25 as the high modulus component was used as a control sample or baseline. A nominal 2.0-psf panels was also formed of 100% high modulus Tensylon tape. Various other combinations of Tensylon tape and HB25 were formed into ballistic-resistant panels to test the ballistic resistance of panels with various amounts of Tensylon tape in place of the conventional high modulus component and to also test whether the Tensylon tape was more effective in various configurations, such as 1) alternating sheets of Tensylon tape and conventional high modulus component, 2) Tensylon tape as a strike-face at the front of the ballistic-resistant panel, and 3) Tensylon tape as the backing material with conventional high modulus component forming the strike face, and 4) varying the ratio of Tensylon tape to conventional high modulus component. Several of these variations were molded into panels at 150 psi and 250° F. as shown in Table 4 below, and several molded into panels at 150 psi and 210° F. as shown in Table 5. The ballistic-resistant panels were tested with 0.30 caliber FSP rounds and the V50 results recorded.
  • Table 4 includes, left to right in columns 1 to 7:1) the high modulus composition, 2) the baseline V50 test result for panels formed of one high modulus component, 3) the V50 test result for panels formed with a Tensylon strike-face, 4) the V50 test result for panels formed with HB25 as the strike-face, 5) the calculated V50, and 6) the delta V50 which is the difference between the calculated V50 and the actual V50 recorded in columns 3, 4, or 5. The calculated V50 is determined by the Rule of Mixtures wherein the property of a composite is proportional to the volume fractions of the materials in the composite, thus the calculated V50 for a 50/50 ratio of Tensylon C and HB25 is V50=0.5 (1650)+0.5 (2250) or V50 (calculated)=1950. The Tensylon C (Ten C) and Tensylon A (Ten A) were panels molded with different adhesives.
  • Thus, if the Delta V50 is within plus or minus 50 fps, the Rule of Mixtures is a good predictor of the final V50 value, and there is no effect from the manner in which the separate high modulus components are combined in the panel. Thus the V50 for alternating layers of Tensylon tape and HB25, which is represented by line 4 of the table, is predicted by the Rule of Mixtures. However, if the absolute value of the Delta V50 is significantly greater than 50 fps for several of the test panels, it implies that the order in which the high modulus components are arranged in the ballistic-resistant panel is statistically significant. Thus, where the Tensylon tape is placed with respect to front or back in the ballistic-resistant panel has a significant effect on the ballistic performance of the panel. A Delta V50 that is greater than +50 fps indicates a higher ballistic resistance result than expected by the Rule of Mixtures and thus an advantageous configuration of high modulus components within the panel. A Delta V50 that is less than −50 fps indicates a lower ballistic resistance result than expected by the Rule of Mixtures and thus an undesirable configuration of high modulus components within the panel.
  • Therefore, it can be concluded from the test results in Table 4 that the compositions in rows 5 and 10 through 12 are advantageous for producing a panel with high ballistic resistance. Column 1 shows the high modulus composition of these panels are 25% Tensylon/50% HB25/25% Tensylon (panel 5), 25% Tensylon/75% HB25 (panels 10 and 11), and 50% Tensylon/50% HB25 (panel 12). Results therefore show that a strike-face consisting of high modulus UHMWPE Tensylon tape improves the performance of ballistic-resistant panels. In the final ballistic-resistant panel, the adhesive was less than 20 weight percent of the total weight of the panel.
  • TABLE 4
    Test Results of 2.0 psf Ballistic-resistant panels at Molding Pressure 150 psi
    and 250° F. Temperature:
    Baseline Tensylon Tensylon Delta
    High Modulus Ratio 0.30 cal. Front Back Calculated V50
    Component (%) V50 (fps) V50 (fps) V50 (fps) V50 (fps) (fps)
    HB25 100 2250 — — — —
    Tensylon C 100 1650 — — — —
    Tensylon A 100 1933 — — — —
    TenC/HB25 alt.* 50/50 — 1965 — 1950 +15
    TenC/HB25/TenC 25/50/25 — 2211 — 1950 +261
    HB25/TenC/HB25 25/50/25 — — 1989 1950 +39
    HB25/TenA 50/50 — — 1933 2092 −159
    HB25/TenC 50/50 — — 1750 1950 −200
    HB25/TenC 75/25 — — 1852 2101 −249
    TenC/HB25 25/75 — 2333 — 2101 +232
    TenA/HB25 25/75 — 2255 — 2151 +104
    TenC/HB25 50/50 — 2217 — 1950 +267
    TenC/HB25 alt.* — alternating layers of Tensylon C and HB25.
  • Table 5 includes ballistic test results for panels of various compositions of Tensylon UHMWPE tape and HB25 fibers molded at 150 psi and 210° F. The ballistic-resistant panels were tested with 0.30 caliber FSP rounds and the V50 velocities recorded.
  • TABLE 5
    Test Results of 2.0 psf Ballistic-resistant panels at Molding Pressure 150 psi
    and 210° F. Temperature:
    Baseline Tensylon Tensylon
    High Modulus 0.30 cal. Front Back Calculated Delta V50
    Component Ratio (%) V50 (fps) V50 (fps) V50 (fps) V50 (fps) (fps)
    HB25 100 2154 — — — —
    Tensylon A 100 1986 — — — —
    HB25/TenA 50/50 — — 1909 2070 −161
    TenA/HB25 50/50 — 2289 — 2070 +219
    TenA/HB25 25/75 — 2300 — 2112 +188
  • As reference to Table 5 shows, the ballistic resistance for the 2.0 psf panels molded at 150 psi and 210° F. was improved significantly with Tensylon UHMWPE tape used as the strike face of the panel. The improvement in ballistic resistance with the addition of Tensylon tape as the strike face therefore occurred with panels molded at 250° F. (Table 4) as well as at 210° F. (Table 5).
  • Table 6 includes ballistic test results for 3.8 nominal psf ballistic-resistant panels composed of Tensylon UHMWPE tape and aramid fabric molded with SURLYN® resin at 150 psi and 250° F. SURLYN® is an ethylene/methacrylic acid copolymer available from DuPont Packaging and Industrial Polymers of Wilmington, Del. The aramid fabric is produced commercially by Barrday, Inc. under the trade name Barrday Style 1013. The aramid fabric was composed of 3,000 denier Kevlar® 29 in fabrics of 14 oz/yd2 weight. One ply of 1.5-mil CAF film (SURLYN® resin) was used between each ply of Tensylon tape. (As a result of aramid fabric and Tensylon tape weight variances, it was difficult to match areal densities. The ballistic-resistant panels were tested with 0.30 caliber FSP rounds and the V50 velocities recorded.
  • TABLE 6
    Test Results of 3.3 psf Ballistic-resistant panels at Molding Pressure 150 psi
    and 250° F. Temperature:
    Baseline Tensylon Tensylon
    High Modulus Ratio 0.30 cal. FSP Front Back Calculated Delta V50
    Component (%) V50 (fps) V50 (fps) V50 (fps) V50 (fps) (fps)
    Aramid 100 2491 — — — —
    Tens/Ara alt.* 50/50 2320 — — 2405  −85
    Tens/Ara 50/50 — 2632 — 2405 +227
    Ara/Tens 50/50 — — 2275 2405 −130
    Tens/Ara alt.* — alternating layers of Tensylon and Aramid.
  • As shown in Table 6, the test panel with a Tensylon tape strike face had ballistic resistance of 2632 fps, which was significantly higher than that predicted by the Rule of Mixtures.
  • Table 7 includes ballistic test results for 3.8 nominal psf ballistic-resistant panels composed of Tensylon UHMWPE tape and HB25 and tested with an NIJ Level III M80 ball projectile (U.S. military designation for 7.62 mm full metal jacketed bullet).
  • TABLE 7
    Test Results - 3.8 psf Ballistic-resistant panels, M80 Ball:
    V50
    Molding Areal Calculated M80 Delta
    High Modulus Ratio Pressure Density M80 ball ball V50
    Component (%) (psi) (psf) V50 (fps) (fps) (fps)
    HB25 100 150 4.01 — 2965 —
    Tensylon 100 150 4.00 — 2107 —
    Tens/HB25 alt.* 50/50 150 3.80 2565 2416 −149
    Tensylon/HB25 50/50 150 3.85 2565 2880 +315
    Tensylon/HB25 25/75 150 3.85 2750 2897 +147
    Tens/HB25 alt.* — alternating layers of Tensylon and HB25.
  • As shown in Table 7 for nominal 3.8 psf composite ballistic-resistant panels, the Tensylon UHMWPE tape had a beneficial effect when placed as the strike-face of the ballistic-resistant panel, including a V50 velocity of 2880 fps for the ballistic-resistant panel in which the Tensylon tape comprised the strike-face and 50% of the high modulus component and a V50 velocity of 2897 fps for the ballistic-resistant panel in which the Tensylon tape comprised the strike-face and 25% of the high modulus component.
  • Table 8 includes ballistic test results for a spall liner for simulated armor with facings of aluminum and High Hardness Steel (HHS) and various backing compositions including various weights of HB25 and various compositions including HB25 and Tensylon tape. All of the armor designs including Tensylon tape as a high modulus component had positive results for rifle threat relative to the requirement.
  • TABLE 8
    Ballistic Data Summary - Spall Liner:
    Rifle Frag.**
    Threat Threat
    Total Relative Relative
    Armor Design AD to Rqmt.* to Rqmt.
    Facing Backing (psf) (fps) (fps)
    1″ 6061 2.5 psf HB25 27.2 +232 fps Not tested
    Al/¼″ HHS 3.0 psf HB25 27.7 −42 Not tested
    3.5 psf HB25 28.2 +419 Not tested
    1.25 psf Ten/1.25 psf HB25 27.2 +152 Not tested
    1.50 psf Ten/1.50 psf HB25 27.7 +144 Not tested
    1.75 psf Ten/1.75 psf HB25 28.2 +564 +1000
    1.5″ 6061 1.30 psf HB25 33.1 +412 Not tested
    Al/¼″ HHS 1.25 psf Ten/1.25 psf HB25 33.1 >+464 Not tested
    1.60 psf Ten 33.4 +390 +1639
    *Rqmt.—Requirement.
    **Frag.—Fragmentation
  • Table 9 includes ballistic test results for a simulated spall liner including the following various configurations: 1) a baseline configuration of ¼″ Ultra High Hard Steel (UHHS) and 1.1 psf of KEVLAR® Reinforced Plastic (KRP), 2) baseline plus 25-mm of HB25 spaced 25-mm behind the KRP, 3) baseline plus 25-mm of high modulus components comprised of 25% Tensylon and 75% HB25 spaced 25-mm behind the KRP, and 4) baseline plus 25-mm of high modulus components comprised of 50% Tensylon and 50% HB25 spaced 25-mm behind the KRP. Test results included the spall cone angle measured at layers 1 and 3 and the average number of fragments that penetrated at layers 1 and 3. The spall cone angle and average number of fragments through for a spall liner including 25% and 50% Tensylon tape were similar to those obtained for a spall liner of 100% HB25.
  • TABLE 9
    Ballistic Data Summary - Simulated Spall Liner, 20 mm FSP:
    Spall Cone Average # of
    Angle (degrees) Fragments Through
    Material Layer 1 Layer 3 Layer 1 Layer 3
    Baseline Configuration: 66.44 61.70 214.5 35.0
    ¼″ UHHS + 1.1 psf KRP
    Baseline with: 51.12 35.04 88.50 11.0
    25-mm HB25 spaced 25-mm
    behind KRP
    Baseline with: 56.46 36.75 89.50 10.5
    25-mm 25% Tens/75% HB25
    spaced 25-mm behind KRP
    Baseline with: 52.58 32.57 103.0 9.0
    25-mm 50% Tens/50% HB25
    spaced 25-mm behind KRP
  • In another embodiment, ballistic-resistant panels were constructed using Tensylon tape as the high modulus component to determine the effect of molding pressure and temperature on ballistic resistance. Table 10 includes ballistic test results for 2.0 psf panels comprised of cross-plied layers of 1.62-inch width Tensylon UHMWPE tape, with a first series of panels molded at 150 psi and at various temperatures and a second series of panels molded at 500 psi and at various temperatures. The cross-plied layers of Tensylon UHMWPE tape were interleaved with a low density polyolefin scrim (Spunfab PO4605) and pressed and bonded at the various pressures and temperatures recorded in the table. The last entry in Table 10, Tensylon*, was comprised of layers of 1.62-inch Tensylon tape woven into a fabric using a basket weave with the weft arranged at 90° with respect to the warp. The woven layers were pressed with an 18-micron low density polyethylene film to form a 2.2 psf ballistic-resistant panel. The ballistic-resistant panels were tested with 0.30 caliber FSP rounds per MIL-P-46593A and the average V50 velocities recorded.
  • TABLE 10
    Test Results of 2.0 psf Ballistic-resistant panels at Molding
    Pressures 150 psi and 500 psi and at various Temperatures:
    Molding Average
    High Modulus Pressure Temperature V50
    Component (psi) (degrees F.) (fps)
    Tensylon B1 150 200 1601
    Tensylon B1 150 210 1702
    Tensylon B1 150 220 1630
    Tensylon B1 150 230 1689
    Tensylon B1 150 240 1611
    Tensylon B1 150 250 1634
    Tensylon B1 150 260 1577
    Tensylon B1 150 270 1543
    Tensylon B1 150 280 1551
    Tensylon B1 500 180 1790
    Tensylon B1 500 190 1717
    Tensylon B1 500 200 1692
    Tensylon B1 500 210 1647
    Tensylon B1 500 220 1588
    Tensylon B1 500 230 1593
    Tensylon B1 500 240 1566
    Tensylon B1 500 250 1649
    Tensylon B1 500 260 1703
    Tensylon* 500 250 1826
    *2.2 psf panel formed of Tensylon 0/90 weave with 1″ tape.
  • As shown in FIG. 6, the resultant average V50 values for the Tensylon B1 panels of Table 10 were plotted versus temperature and a regression line fitted each series of data points. The ballistic resistance of the panels generally increased as the molding temperature was decreased.
  • Although the embodiments of ballistic-resistant panels describe above were prepared at specific parameters, other variations of processing conditions are possible without departing from the scope of the invention. For example, although the Tensylon UHMWPE tape in adjacent layers of the ballistic-resistant panel were oriented at 0° and 90° respectively, other orientations are possible, such as 0° and 45° in adjacent layers, or 0°, 45°, and 90° for each three successive layers. Preferably the direction of orientation of the tape in each of the interleaved layers of non-fibrous ultra high molecular weight polyethylene tape is at an angle of at least 30 degrees with respect to the direction of orientation of the tape in an adjacent layer. Although the specific molding temperatures tested herein were between 180 and 280° F., it is believed that molding temperatures between 150° F. and 300° F. are acceptable for forming a ballistic-resistant panel according to the present invention. Although specific molding pressures of 150, 500, and 3000 psi were tested, it is believed that molding pressures between 100 and 4000 psi are acceptable for forming ballistic-resistant panels according to the present invention.
  • Although in one embodiment herein the Tensylon tape was woven into a fabric using a basket weave, it is within the scope of the present invention to form the Tensylon tape into fabric using any fabric weave, such as plain weave, twill weave, satin weave, and the like.
  • Having thus described the invention with reference to a preferred embodiment, it is to be understood that the invention is not so limited by the description herein but is defined as follows by the appended claims.

Claims (19)

1. A ballistic-resistant panel comprising:
a compressed stack of interleaved layers of high modulus material wherein said high modulus material includes a modulus greater than 1,000 grams per denier;
a first portion of said interleaved layers of high modulus material including a plurality of interleaved layers consisting of non-fibrous ultra high molecular weight polyethylene (UHMWPE) tape;
a second portion of said interleaved layers of high modulus material including a plurality of interleaved layers consisting of cross-plied fibers embedded in resin; and
an adhesive on each of said interleaved layers of said non-fibrous ultra high molecular weight polyethylene tape.
2. The ballistic-resistant panel of claim 1 wherein
each of said layers of non-fibrous ultra high molecular weight polyethylene tape includes a plurality of tape strips;
said tape strips including a width of at least 1.0 inch;
said tape strips include edges; and
said tape strips are fused together in a butt joint or overlap joint at said edges or woven into a fabric.
3. The ballistic-resistant panel of claim 1 wherein said non-fibrous ultra high molecular weight polyethylene tape includes
a viscosity-average molecular weight of at least 2,000,000;
a thickness of between 0.0015 and 0.004 inch; and
a modulus of greater than 1400 grams per denier.
4. The ballistic-resistant panel of claim 1 wherein
said tape in each of said interleaved layers of non-fibrous ultra high molecular weight polyethylene tape is unidirectional; and
the direction of orientation of said tape in each of said interleaved layers of non-fibrous ultra high molecular weight polyethylene tape is at an angle of at least 30 degrees with respect to the direction of orientation of said tape in an adjacent layer of said tape.
5. The ballistic-resistant panel of claim 1 wherein said compressed stack of interleaved layers of high modulus material are compressed and bonded together at
a pressure of between 100 and 4,000 psi; and
a temperature of between 150 and 300 degrees F.
6. (canceled)
7. The ballistic-resistant panel of claim 1 wherein said adhesive on each of said interleaved layers of said non-fibrous ultra high molecular weight polyethylene tape is selected from the group consisting of polyamide, polyolefin, ethylene vinylacetate copolymer, polyurethane, ethylene acrylic acid copolymer, polystryrene-isoprene copolymer, or ethylene/methacrylic acid copolymer.
8. The ballistic-resistant panel of claim 1 wherein said adhesive comprises between 5.7 and 10.4 weight percent of the total weight of said panel.
9. The ballistic-resistant panel of claim 2 wherein said non-fibrous UHMWPE tape strips
are formed from stretching partially oriented UHMWPE tape to a total draw ratio of 100:1 or greater wherein the draw ratio is defined as the length after stretching divided by the length before stretching;
said tape strips include a width to thickness ratio of at least 400:1; and
said tape strips include a denier of 6,000 or greater.
10. The ballistic-resistant panel of claim 1 wherein said adhesive includes a scrim or film of adhesive on each of said interleaved layers of non-fibrous UHMWPE tape.
11. The ballistic-resistant panel of claim 1 wherein
each of said interleaved layers of said non-fibrous UHMWPE tape includes two sides; and
said adhesive is in the form of a liquid dispersion applied to one of said non-fibrous UHMWPE tape.
12. The ballistic-resistant panel of claim 1 wherein said first portion of said interleaved layers form the strike-face of said ballistic-resistant panel.
13-16. (canceled)
17. A ballistic-resistant panel comprising:
a plurality of interleaved layers consisting of non-fibrous ultra high molecular weight polyethylene tape;
each of said layers of non-fibrous ultra high molecular weight polyethylene tape including a plurality of monolithic tape strips joined together in a sheet structure including joints between adjoining strips wherein said joints include an intermingling of molecules between said molecules of said adjoining strips and a higher strength in said joints than in said adjoining strips and each of said tape strips including a modulus of greater than 1400 grams per denier;
said plurality of tape strips in each of said layers including a first portion of tape strips oriented at a first angle and a second portion of tape strips oriented at substantially 90 degrees with respect to said first angle; and
said plurality of interleaved layers of non-fibrous ultra high molecular weight polyethylene tape bonded together by heat and pressure.
18. The ballistic-resistant panel of claim 17 wherein said heat of bonding is at least 150 degrees F. and said pressure of bonding is at least 150 psi.
19. The ballistic-resistant panel of claim 17 wherein
said first portion of tape strips in said layer includes a first ply of tape strips arranged side to side in a butt joint and bonded together by heat and pressure;
said second portion of tape strips in said layer includes a second ply of tape strips arranged side to side in a butt joint and bonded together by heat and pressure; and
said first portion of tape strips and said second portion of tape strips are bonded together to form a cross-plied layer.
20-27. (canceled)
28. A ballistic-resistant article comprising a metallic strike face and a plurality of interleaved layers of polymeric material stacked against the strike face, the plurality of interleaved layers consisting of a multilayer sheet of first and second layers, wherein at least some of the first layers consist of drawn polymeric fibers and wherein at least some of the second layers consist of drawn polymeric tapes.
29. (canceled)
US11/881,863 2007-04-13 2007-07-30 Ballistic-resistant panel including high modulus ultra high molecular weight polyethylene tape Active 2029-07-05 US7964267B1 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
US11/881,863 US7964267B1 (en) 2007-04-13 2007-07-30 Ballistic-resistant panel including high modulus ultra high molecular weight polyethylene tape
BRPI0810210 BRPI0810210A2 (en) 2007-04-13 2008-04-03 BALISTIC RESISTANCE PANEL.
AU2008275762A AU2008275762B2 (en) 2007-04-13 2008-04-03 Ballistic-resistant panel including high modulus ultra high molecular weight polyethylene tape
JP2010503017A JP2010530052A (en) 2007-04-13 2008-04-03 Ballistic resistant panel containing high elasticity ultra high molecular weight polyethylene tape
EP08826213.4A EP2146843B1 (en) 2007-04-13 2008-04-03 Ballistic-resistant panel including high modulus ultra high molecular weight polyethylene tape
EP16152167.9A EP3029411B1 (en) 2007-04-13 2008-04-03 Ballistic-resistant panel including high modulus ultra high molecular weight polyethylene tape
PCT/US2008/004333 WO2009008922A2 (en) 2007-04-13 2008-04-03 Ballistic-resistant panel including high modulus ultra high molecular weight polyethylene tape
US12/313,946 US7923094B1 (en) 2007-04-13 2008-11-26 Laminated ballistic sheet
US12/455,279 US7976932B1 (en) 2007-04-13 2009-05-29 Ballistic-resistant panel including high modulus ultra high molecular weight polyethylene tape
US12/592,198 US7972679B1 (en) 2007-07-30 2009-11-20 Ballistic-resistant article including one or more layers of cross-plied uhmwpe tape in combination with cross-plied fibers
US13/134,742 US8287987B1 (en) 2007-04-13 2011-06-15 Ballistic-resistant panel including high modulus ultra high molecular weight polyethylene tape

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US11/787,094 US7964266B2 (en) 2007-04-13 2007-04-13 Wide ultra high molecular weight polyethylene sheet and method of manufacture
US11/821,659 US7976930B2 (en) 2007-06-25 2007-06-25 Non-fibrous high modulus ultra high molecular weight polyethylene tape for ballistic applications
US11/881,863 US7964267B1 (en) 2007-04-13 2007-07-30 Ballistic-resistant panel including high modulus ultra high molecular weight polyethylene tape

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
US11/787,094 Continuation-In-Part US7964266B2 (en) 2007-04-13 2007-04-13 Wide ultra high molecular weight polyethylene sheet and method of manufacture
US11/821,659 Continuation-In-Part US7976930B2 (en) 2007-04-13 2007-06-25 Non-fibrous high modulus ultra high molecular weight polyethylene tape for ballistic applications

Related Child Applications (3)

Application Number Title Priority Date Filing Date
US12/313,946 Continuation-In-Part US7923094B1 (en) 2007-04-13 2008-11-26 Laminated ballistic sheet
US12/455,279 Continuation-In-Part US7976932B1 (en) 2007-04-13 2009-05-29 Ballistic-resistant panel including high modulus ultra high molecular weight polyethylene tape
US13/134,742 Continuation US8287987B1 (en) 2007-04-13 2011-06-15 Ballistic-resistant panel including high modulus ultra high molecular weight polyethylene tape

Publications (2)

Publication Number Publication Date
US7964267B1 US7964267B1 (en) 2011-06-21
US20110167998A1 true US20110167998A1 (en) 2011-07-14

Family

ID=40229315

Family Applications (2)

Application Number Title Priority Date Filing Date
US11/881,863 Active 2029-07-05 US7964267B1 (en) 2007-04-13 2007-07-30 Ballistic-resistant panel including high modulus ultra high molecular weight polyethylene tape
US13/134,742 Active US8287987B1 (en) 2007-04-13 2011-06-15 Ballistic-resistant panel including high modulus ultra high molecular weight polyethylene tape

Family Applications After (1)

Application Number Title Priority Date Filing Date
US13/134,742 Active US8287987B1 (en) 2007-04-13 2011-06-15 Ballistic-resistant panel including high modulus ultra high molecular weight polyethylene tape

Country Status (6)

Country Link
US (2) US7964267B1 (en)
EP (2) EP2146843B1 (en)
JP (1) JP2010530052A (en)
AU (1) AU2008275762B2 (en)
BR (1) BRPI0810210A2 (en)
WO (1) WO2009008922A2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120024138A1 (en) * 2010-07-30 2012-02-02 Schott Diamondview Armor Products, Llc Armor panels having strip-shaped protection elements
US20140013934A1 (en) * 2011-06-08 2014-01-16 American Technical Coatings, Inc. Enhanced ballistic protective system
US20150247706A1 (en) * 2012-10-16 2015-09-03 Blucher Gmbh Ballistic Underwear
US20150345913A1 (en) * 2011-06-08 2015-12-03 American Technical Coatings, Inc. Lightweight enhanced ballistic armor system
US10081158B2 (en) 2012-05-17 2018-09-25 Honeywell International Inc. Hybrid fiber unidirectional tape and composite laminates

Families Citing this family (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7446352B2 (en) 2006-03-09 2008-11-04 Tela Innovations, Inc. Dynamic array architecture
US9230910B2 (en) 2006-03-09 2016-01-05 Tela Innovations, Inc. Oversized contacts and vias in layout defined by linearly constrained topology
US9009641B2 (en) 2006-03-09 2015-04-14 Tela Innovations, Inc. Circuits with linear finfet structures
US9563733B2 (en) 2009-05-06 2017-02-07 Tela Innovations, Inc. Cell circuit and layout with linear finfet structures
US8225239B2 (en) 2006-03-09 2012-07-17 Tela Innovations, Inc. Methods for defining and utilizing sub-resolution features in linear topology
US7763534B2 (en) 2007-10-26 2010-07-27 Tela Innovations, Inc. Methods, structures and designs for self-aligning local interconnects used in integrated circuits
US8839175B2 (en) 2006-03-09 2014-09-16 Tela Innovations, Inc. Scalable meta-data objects
US9035359B2 (en) 2006-03-09 2015-05-19 Tela Innovations, Inc. Semiconductor chip including region including linear-shaped conductive structures forming gate electrodes and having electrical connection areas arranged relative to inner region between transistors of different types and associated methods
US8658542B2 (en) 2006-03-09 2014-02-25 Tela Innovations, Inc. Coarse grid design methods and structures
US8245180B2 (en) * 2006-03-09 2012-08-14 Tela Innovations, Inc. Methods for defining and using co-optimized nanopatterns for integrated circuit design and apparatus implementing same
US7956421B2 (en) 2008-03-13 2011-06-07 Tela Innovations, Inc. Cross-coupled transistor layouts in restricted gate level layout architecture
US8541879B2 (en) 2007-12-13 2013-09-24 Tela Innovations, Inc. Super-self-aligned contacts and method for making the same
US8247846B2 (en) 2006-03-09 2012-08-21 Tela Innovations, Inc. Oversized contacts and vias in semiconductor chip defined by linearly constrained topology
US8448102B2 (en) 2006-03-09 2013-05-21 Tela Innovations, Inc. Optimizing layout of irregular structures in regular layout context
US8225261B2 (en) 2006-03-09 2012-07-17 Tela Innovations, Inc. Methods for defining contact grid in dynamic array architecture
US8653857B2 (en) 2006-03-09 2014-02-18 Tela Innovations, Inc. Circuitry and layouts for XOR and XNOR logic
US7908578B2 (en) 2007-08-02 2011-03-15 Tela Innovations, Inc. Methods for designing semiconductor device with dynamic array section
US8286107B2 (en) 2007-02-20 2012-10-09 Tela Innovations, Inc. Methods and systems for process compensation technique acceleration
US8667443B2 (en) 2007-03-05 2014-03-04 Tela Innovations, Inc. Integrated circuit cell library for multiple patterning
US8453094B2 (en) 2008-01-31 2013-05-28 Tela Innovations, Inc. Enforcement of semiconductor structure regularity for localized transistors and interconnect
US7939443B2 (en) 2008-03-27 2011-05-10 Tela Innovations, Inc. Methods for multi-wire routing and apparatus implementing same
US20110041677A1 (en) * 2008-04-28 2011-02-24 Teijin Aramid B.V. Ballistic-resistant articles comprising tapes
EA019783B1 (en) † 2008-04-29 2014-06-30 ДСМ АйПи АССЕТС Б.В. Stack of first and second layers, a panel and a ballistic resistant article comprising the stack or panel
SG192532A1 (en) 2008-07-16 2013-08-30 Tela Innovations Inc Methods for cell phasing and placement in dynamic array architecture and implementation of the same
US9122832B2 (en) 2008-08-01 2015-09-01 Tela Innovations, Inc. Methods for controlling microloading variation in semiconductor wafer layout and fabrication
CA2758494C (en) 2009-04-23 2017-01-03 Dsm Ip Assets B.V. Compressed sheet
WO2010142787A1 (en) * 2009-06-11 2010-12-16 Dsm Ip Assets B.V. System for protection against storms
US8661392B2 (en) 2009-10-13 2014-02-25 Tela Innovations, Inc. Methods for cell boundary encroachment and layouts implementing the Same
US9159627B2 (en) 2010-11-12 2015-10-13 Tela Innovations, Inc. Methods for linewidth modification and apparatus implementing the same
US9180623B1 (en) * 2011-08-29 2015-11-10 Vall A. Iliev System, method and article of manufacture for ballistic shielding
US9944041B1 (en) * 2011-08-29 2018-04-17 Shot Stop Ballistics LLC System, method and article of manufacture for ballistic shielding
US10082372B1 (en) * 2011-08-29 2018-09-25 ShotStop Ballistics LLC Material for and the method of manufacture for ballistic shielding
US9138961B2 (en) 2011-10-19 2015-09-22 Honeywell International Inc. High performance laminated tapes and related products for ballistic applications
JP5412008B1 (en) * 2012-03-12 2014-02-12 積水化学工業株式会社 Shock absorbing member, protective clothing, and method of manufacturing shock absorbing member
US9243354B2 (en) 2013-03-15 2016-01-26 Honeywell International Inc. Stab and ballistic resistant articles
CN103240855B (en) * 2013-04-27 2015-11-25 张家港市贝尔机械有限公司 The flush mounting of glass fiber reticular cloth in press insert type fiberglass reinforced building template
EP2992294A4 (en) * 2013-05-01 2017-04-26 Mystery Ranch, Ltd. Ballistic plate materials and method
KR101575397B1 (en) * 2013-06-12 2015-12-07 코오롱인더스트리 주식회사 Bulletproof Material
EP3099996A2 (en) * 2014-01-27 2016-12-07 E. I. du Pont de Nemours and Company Light weight trauma reducing body armor
CN103884238B (en) * 2014-02-28 2015-11-25 北京同益中特种纤维技术开发有限公司 A kind of bulletproof composite unit material and preparation method thereof
US10048046B1 (en) * 2015-04-30 2018-08-14 Shot Stop Ballistics Shooting range booth assembly
US20170297295A1 (en) 2016-04-15 2017-10-19 Honeywell International Inc. Blister free composite materials molding
EP3606982B1 (en) * 2017-04-06 2022-04-20 DSM IP Assets B.V. High performance fibers composite sheet
US10773488B2 (en) * 2017-11-29 2020-09-15 Dupont Safety & Construction, Inc. Polyethylene sheet and articles made therefrom
US20190375201A1 (en) * 2018-06-06 2019-12-12 E I Du Pont De Nemours And Company Conformable polyethylene fabric and articles made therefrom
US20190375202A1 (en) * 2018-06-06 2019-12-12 E I Du Pont De Nemours And Company Conformable polyethylene fabric and articles made therefrom
KR20210127160A (en) * 2019-02-12 2021-10-21 데이진 아라미드 비.브이. Ballistic resistant articles based on sheets with discontinuous film splits
CN110686566B (en) * 2019-10-24 2021-10-08 重庆盾之王安防设备技术研究院有限公司 Nonmetal bulletproof plugboard
WO2022082702A1 (en) * 2020-10-23 2022-04-28 Dupont Electronics, Inc. Multifunctional sheets and laminates, articles, and methods

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4550044A (en) * 1983-08-08 1985-10-29 Figgie International, Inc. Ballistic resistant armor panel and method of constructing the same
US5437905A (en) * 1994-05-17 1995-08-01 Park; Andrew D. Ballistic laminate structure in sheet form
US5851932A (en) * 1997-10-06 1998-12-22 Isorco, Inc. Ballistic armor laminate
US20020037391A1 (en) * 1999-02-19 2002-03-28 Alliedsignal Flexible fabric from fibrous web and discontinuous domain matrix
US6539983B2 (en) * 1997-04-14 2003-04-01 Tape Weaving Sweden Ab Woven material comprising tape-like warp and weft
US6562435B1 (en) * 1999-03-20 2003-05-13 Survival, Incorporated Method for forming or securing unindirectionally-oriented fiber strands in sheet form, such as for use in a ballistic-resistant panel
US6893704B1 (en) * 1995-06-20 2005-05-17 Dsm Ip Assets B.V. Ballistic-resistant moulded article and a process for the manufacture of the moulded article
US20050197020A1 (en) * 2004-03-08 2005-09-08 Park Andrew D. Hard armor composite
US6951685B1 (en) * 2001-11-27 2005-10-04 Integrated Textile Systems, Inc. Ultra high molecular weight polyethylene fibers

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4840870A (en) * 1971-09-25 1973-06-15
GB9307232D0 (en) * 1993-04-07 1993-06-02 Courtaulds Aerospace Ltd Ballistic resistant conposites
US6276255B1 (en) * 1995-06-26 2001-08-21 Pacific Safety Products, Inc. Soft body armor
US6319862B1 (en) * 1999-07-19 2001-11-20 Paul Czetto, Jr. Protective multilayer armor construction
US20060030226A1 (en) * 2003-12-09 2006-02-09 Park Andrew D Non-ceramic hard armor composite
US7288307B2 (en) * 2004-01-12 2007-10-30 Honeywell International Inc. Hybrid laminated fiber sheets
JP4748383B2 (en) * 2004-03-09 2011-08-17 東レ株式会社 Impact resistant fiber reinforced plastic and multilayer structure
IL203401A (en) * 2004-08-16 2013-03-24 Yuval Fuchs Methods of preparation of monolayers and bilayers comprising ultra high molecular weight polyethylene and ballistic resistant articles manufactured therefrom
US20110048220A1 (en) * 2005-07-29 2011-03-03 Composix Co. Ballistic laminate structure
EP2711661B1 (en) * 2006-04-26 2018-10-10 DSM IP Assets B.V. Multilayered material sheet and process for its preparation
JP5682020B2 (en) * 2006-04-26 2015-03-11 ディーエスエム アイピー アセッツ ビー．ブイ． Multilayer material sheet and method for preparing the same
EP2047975A1 (en) * 2007-10-09 2009-04-15 Novameer B.V. Advanced antiballistic materials
AU2008317960B2 (en) * 2007-10-31 2014-07-10 Dsm Ip Assets B.V. Material sheet and process for its preparation

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4550044A (en) * 1983-08-08 1985-10-29 Figgie International, Inc. Ballistic resistant armor panel and method of constructing the same
US5437905A (en) * 1994-05-17 1995-08-01 Park; Andrew D. Ballistic laminate structure in sheet form
US6893704B1 (en) * 1995-06-20 2005-05-17 Dsm Ip Assets B.V. Ballistic-resistant moulded article and a process for the manufacture of the moulded article
US6539983B2 (en) * 1997-04-14 2003-04-01 Tape Weaving Sweden Ab Woven material comprising tape-like warp and weft
US5851932A (en) * 1997-10-06 1998-12-22 Isorco, Inc. Ballistic armor laminate
US20020037391A1 (en) * 1999-02-19 2002-03-28 Alliedsignal Flexible fabric from fibrous web and discontinuous domain matrix
US6562435B1 (en) * 1999-03-20 2003-05-13 Survival, Incorporated Method for forming or securing unindirectionally-oriented fiber strands in sheet form, such as for use in a ballistic-resistant panel
US6951685B1 (en) * 2001-11-27 2005-10-04 Integrated Textile Systems, Inc. Ultra high molecular weight polyethylene fibers
US20050197020A1 (en) * 2004-03-08 2005-09-08 Park Andrew D. Hard armor composite

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120024138A1 (en) * 2010-07-30 2012-02-02 Schott Diamondview Armor Products, Llc Armor panels having strip-shaped protection elements
US20140013934A1 (en) * 2011-06-08 2014-01-16 American Technical Coatings, Inc. Enhanced ballistic protective system
US20150345913A1 (en) * 2011-06-08 2015-12-03 American Technical Coatings, Inc. Lightweight enhanced ballistic armor system
US11015903B2 (en) * 2011-06-08 2021-05-25 American Technical Coatings, Inc. Enhanced ballistic protective system
US11421963B2 (en) * 2011-06-08 2022-08-23 American Technical Coatings, Inc. Lightweight enhanced ballistic armor system
US10081158B2 (en) 2012-05-17 2018-09-25 Honeywell International Inc. Hybrid fiber unidirectional tape and composite laminates
US20150247706A1 (en) * 2012-10-16 2015-09-03 Blucher Gmbh Ballistic Underwear
US10895437B2 (en) * 2012-10-16 2021-01-19 Blucher Gmbh Ballistic underwear

Also Published As

Publication number Publication date
AU2008275762A8 (en) 2010-03-11
WO2009008922A3 (en) 2009-03-12
WO2009008922A9 (en) 2009-05-07
JP2010530052A (en) 2010-09-02
EP3029411B1 (en) 2018-03-21
AU2008275762B2 (en) 2012-12-13
EP2146843A4 (en) 2015-06-24
BRPI0810210A2 (en) 2014-10-14
EP3029411A3 (en) 2016-08-31
US8287987B1 (en) 2012-10-16
US20120266744A1 (en) 2012-10-25
US7964267B1 (en) 2011-06-21
AU2008275762A1 (en) 2009-01-15
EP3029411A2 (en) 2016-06-08
WO2009008922A2 (en) 2009-01-15
EP2146843A2 (en) 2010-01-27
EP2146843B1 (en) 2017-12-13

Similar Documents

Publication Publication Date Title
US8287987B1 (en) Ballistic-resistant panel including high modulus ultra high molecular weight polyethylene tape
US7976932B1 (en) Ballistic-resistant panel including high modulus ultra high molecular weight polyethylene tape
JP2010530052A6 (en) Ballistic resistant panel containing high elasticity ultra high molecular weight polyethylene tape
JP5368312B2 (en) Lightweight composite protective articles spaced apart
US6825137B2 (en) Lightweight ballistic resistant rigid structural panel
JP5221511B2 (en) Restraint breastplate, vehicle bulletproof plate, and bulletproof helmet
US20120186433A1 (en) Protective shield material
US20050153098A1 (en) Hybrid laminated fiber sheets
US20100275764A1 (en) Fabric architectures for improved ballistic impact performance
US20140060308A1 (en) Antiballistic panel
IL188228A (en) Bullet proof laminate and trauma pack
AU2005301309A1 (en) Method of forming adhesives mixtures and ballistic composites utilizing the same
CA2664153A1 (en) High performance same fiber composite hybrids by varying resin content only
WO2011100832A1 (en) High resin content ballistic materials
US7972679B1 (en) Ballistic-resistant article including one or more layers of cross-plied uhmwpe tape in combination with cross-plied fibers
JP2015517080A (en) Spole liners combined with impact mitigation materials for transportation

Legal Events

Date Code Title Description
AS Assignment

Owner name: TENSYLON HIGH PERFORMANCE MATERIALS, INC., NORTH C

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LYONS, FIELDER STANTON;MEARS, JEFFREY A.;WEEDON, GENE C.;AND OTHERS;SIGNING DATES FROM 20070713 TO 20070726;REEL/FRAME:019681/0192

STCF Information on status: patent grant

Free format text: PATENTED CASE

AS Assignment

Owner name: BAE SYSTEMS TENSYLON HIGH PERFORMANCE MATERIALS, I

Free format text: CHANGE OF NAME;ASSIGNOR:TENSYLON HIGH PERFORMANCE MATERIALS, INC.;REEL/FRAME:026797/0041

Effective date: 20070730

AS Assignment

Owner name: E. I. DU PONT DE NEMOURS AND COMPANY, DELAWARE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BAE SYSTEMS TENSYLON HIGH PERFORMANCE MATERIALS INC.;REEL/FRAME:029084/0043

Effective date: 20120719

FPAY Fee payment

Year of fee payment: 4

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

Year of fee payment: 8

AS Assignment

Owner name: DUPONT SAFETY & CONSTRUCTION, INC., DELAWARE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:E. I. DU PONT DE NEMOURS AND COMPANY;REEL/FRAME:049585/0450

Effective date: 20190328

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 12TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1553); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

Year of fee payment: 12