WO1999061862A2 - Composite panels for protection against rifle bullets - Google Patents
Composite panels for protection against rifle bullets Download PDFInfo
- Publication number
- WO1999061862A2 WO1999061862A2 PCT/US1999/008235 US9908235W WO9961862A2 WO 1999061862 A2 WO1999061862 A2 WO 1999061862A2 US 9908235 W US9908235 W US 9908235W WO 9961862 A2 WO9961862 A2 WO 9961862A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- yarns
- panel
- composite panel
- matrix resin
- tenacity
- Prior art date
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 37
- 239000004744 fabric Substances 0.000 claims abstract description 37
- 229920005989 resin Polymers 0.000 claims abstract description 35
- 239000011347 resin Substances 0.000 claims abstract description 35
- 239000011159 matrix material Substances 0.000 claims abstract description 34
- -1 poly(p-phenylene terephthalamide) Polymers 0.000 claims abstract description 7
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 7
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 7
- 229920002577 polybenzoxazole Polymers 0.000 claims abstract description 6
- 229920003366 poly(p-phenylene terephthalamide) Polymers 0.000 claims abstract description 5
- 239000004698 Polyethylene Substances 0.000 claims abstract description 4
- 229920000573 polyethylene Polymers 0.000 claims abstract description 3
- 229920003235 aromatic polyamide Polymers 0.000 claims description 16
- 125000003118 aryl group Chemical group 0.000 claims description 5
- 239000002759 woven fabric Substances 0.000 claims description 4
- VSSAADCISISCOY-UHFFFAOYSA-N 1-(4-furo[3,4-c]pyridin-1-ylphenyl)furo[3,4-c]pyridine Chemical compound C1=CN=CC2=COC(C=3C=CC(=CC=3)C3=C4C=CN=CC4=CO3)=C21 VSSAADCISISCOY-UHFFFAOYSA-N 0.000 claims 1
- 229920002647 polyamide Polymers 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 description 19
- 239000000835 fiber Substances 0.000 description 15
- 239000000463 material Substances 0.000 description 13
- 230000035515 penetration Effects 0.000 description 13
- 238000010304 firing Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 229920000271 Kevlar® Polymers 0.000 description 5
- 150000001805 chlorine compounds Chemical group 0.000 description 5
- 150000004985 diamines Chemical group 0.000 description 5
- 239000004761 kevlar Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- 238000010998 test method Methods 0.000 description 5
- 230000001143 conditioned effect Effects 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 4
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 229920000092 linear low density polyethylene Polymers 0.000 description 3
- 239000004707 linear low-density polyethylene Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- LXEJRKJRKIFVNY-UHFFFAOYSA-N terephthaloyl chloride Chemical compound ClC(=O)C1=CC=C(C(Cl)=O)C=C1 LXEJRKJRKIFVNY-UHFFFAOYSA-N 0.000 description 3
- 230000008733 trauma Effects 0.000 description 3
- 125000001140 1,4-phenylene group Chemical group [H]C1=C([H])C([*:2])=C([H])C([H])=C1[*:1] 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229920002725 thermoplastic elastomer Polymers 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- ZZPLGBZOTXYEQS-UHFFFAOYSA-N 2,3-dichlorobenzene-1,4-dicarbonyl chloride Chemical compound ClC(=O)C1=CC=C(C(Cl)=O)C(Cl)=C1Cl ZZPLGBZOTXYEQS-UHFFFAOYSA-N 0.000 description 1
- 239000004429 Calibre Substances 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 241001622623 Coeliadinae Species 0.000 description 1
- 235000009967 Erodium cicutarium Nutrition 0.000 description 1
- 240000003759 Erodium cicutarium Species 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 150000004984 aromatic diamines Chemical class 0.000 description 1
- 125000002529 biphenylenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3C12)* 0.000 description 1
- 125000002837 carbocyclic group Chemical group 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- XNLBCXGRQWUJLU-UHFFFAOYSA-N naphthalene-2-carbonyl chloride Chemical compound C1=CC=CC2=CC(C(=O)Cl)=CC=C21 XNLBCXGRQWUJLU-UHFFFAOYSA-N 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 125000000962 organic group Chemical group 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 125000003367 polycyclic group Chemical group 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 125000005628 tolylene group Chemical group 0.000 description 1
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- F41H5/00—Armour; Armour plates
- F41H5/02—Plate construction
- F41H5/04—Plate construction composed of more than one layer
- F41H5/0471—Layered armour containing fibre- or fabric-reinforced layers
- F41H5/0485—Layered armour containing fibre- or fabric-reinforced layers all the layers being only fibre- or fabric-reinforced layers
Definitions
- High powered rifles are important threats to lives of soldiers and policemen due to the high energy of bullets fired from such rifles.
- compositions for use in protective garments wherein multiple layers of matrix impregnated fabric are stacked separately to maintain flexibility and a degree of comfort to the garment wearer. Disadvantages of these compositions are that they are for protection from low energy bullets and they are less efficient on a weight- for-degree-of-protection basis.
- This invention relates to a molded composite panel for protection against high-energy rifle bullets which comprises a woven fabric made from heat stable yarns having a tenacity greater than 3550 MPa (28.0 grams per denier) and a heat meltable matrix resin material, impregnating the fabric layers and adhering the fabric layers together.
- the molded composite panel of this invention meets the requirements for Protection Level III in NIJ Standard 0103.01 or its foreign equivalents at an areal density of less than 28 kg/m 2 .
- the invention also relates to a process for making the above-mentioned composite panel comprising the steps of stacking layers of woven polyaramid fabric having an areal density of less than 400 g/rr and made from yarns having a tenacity greater than 3550 MPa with heat meltable matrix resin material and applying heat and pressure to mold the fabric with the matrix resin.
- the composite panel of this invention represents a significant advance in meeting that object as evidenced in tests performed in accordance with various industry standards and as described in the Examples set out herein below.
- This invention is a composite panel molded from a heat meltable matrix resin material and a woven fabric.
- this invention is a molded composite panel made from especially high tenacity, heat stable, yarns woven into fabrics which are laminated with heat meltable matrix resin material. It has been discovered that such molded composite panels made using heat stable fibers of especially high tenacities, can be made into hard ballistic composite panels and will stop high energy rifle bullets at an improved weight/performance ratio. Meaning that, as a result of this invention, molded composite panels of high tenacity yarns exhibit better bullet protection at lower weight than molded composite panels of lower tenacity yarns.
- An important feature of the present invention is the use of especially high tenacity, heat stable, yarns in a light weight fabric.
- the tenacity of the yarns used in these fabrics is from 3550 MPa (28.0 grams per denier) to 5760 MPA (45.0 grams per denier) and preferably greater than 3675 MPa (29.0 grams per denier) .
- heat stable is meant that the yarns and fibers in the yarns melt or decompose at a temperature greater than 200°C.
- Yarns of this invention can be made using any material which exhibits adequate tenacity and heat stability. They must, of course, be capable of being woven and processed at the temperatures required for molding the composite panels. Among such materials can be named polyaramids, polybenzoxazoles, polybenzothiazoles, and the like.
- polyaramid When the yarns are polyaramid, by “polyaramid” is meant a polyamide wherein at least 85% of the amide (-CO-NH-) linkages are attached directly to two aromatic rings. Suitable polyaramid fibers are described in Man-Made Fibers - Science and Technology, Volume 2, Section titled Fiber-Forming Aromatic Polyamides, page 297, W. Black et al . , Interscience Publishers, 1968. Polyaramid fibers are, also, disclosed in U.S. Patents 4,172,938; 3,869,429; 3,819,587; 3,673,143; 3,354,127; and 3 , 094 , 511.
- Additives can be used with the polyaramid and it has been found that up to as much as 10 percent, by weight, of other polymeric material can be blended with the polyaramid or that copolymers can be used having as much as 10 percent of other diamine substituted for the diamine of the polyaramid or as much as 10 percent of other diacid chloride substituted for the diacid chloride or the polyaramid.
- the preferred polyaramid is a para-aramid and poly (p-phenylene terephthalamide) (PPDT) is the preferred para-aramid.
- PPDT poly (p-phenylene terephthalamide)
- PPDT is meant the homopolymer resulting from mole-for-mole polymerization of p-phenylene diamine and terephthaloyl chloride and, also, copolymers resulting from incorporation of small amounts of other diamines with the p-phenylene diamine and of small amounts of other diacid chlorides with the terephthaloyl chloride.
- PPD- T means copolymers resulting from incorporation of other aromatic diamines and other aromatic diacid chlorides such as, for example, 2 , 6-naphthaloyl chloride or chloro- or dichloroterephthaloyl chloride or 3 , ' -diaminodiphenylether .
- the polymers are preferably made up of mers of the following structures:
- While the aromatic groups shown joined to the nitrogen atoms may be heterocyclic, they are preferably carbocyclic ; and while they may be fused or unfused polycyclic systems, they are preferably single six- membered rings .
- the group shown in the main chain of the bis-azoles is the preferred para-phenylene group, that group may be replaced by any divalent organic group which doesn't interfere with preparation of the polymer, or no group at all. For example, that group may be aliphatic up to twelve carbon atoms, tolylene, biphenylene, bis-phenylene ether, and the like.
- the polybenzoxazole and polybenzothiazole used to make fibers of this invention should have at least 25 and preferably at least 100 mer units. Preparation of the polymers and spinning of those polymers is disclosed in the aforementioned International Publication WO 93/20400.
- the fabrics are woven and can be woven in any, generally-used fabric configuration such as plain weave, crowfoot weave, basket weave, satin weave, and the like. Plain weave is preferred.
- the areal density of fabrics used in this invention is less than 400 g/m ; preferably less than 200 g/m 2 , more preferably less than 160 g/m 2 and most preferably less than 120 g/m 2 .
- the matrix resin used in the composite panel of this invention is a thermoset, an elastomer, or a thermoplastic. All matrix resins must, of course, be at least, initially heat meltable for manufacture of the molded composite panel of this invention. Thermoplastic matrix resins are preferred. The role of the matrix resin is to hold individual fibers and yarns in place in each fabric layer and to adhere together adjacent fabric layers in the panel.
- thermoset matrix resins examples include unsaturated polyester resins, epoxy resins, phenol resins, melamine resins, urea resins and a reacted mixture of phenol and poly (vinyl butyral) resins, and the like. The reacted mixture of phenol and poly (vinyl butyral) is preferred. Examples of elastomeric matrix resins are summarized in the Encyclopedia of Polymer Science, Vol 5, "Elastomers Synthetic" (John Wiley & Sons 1964) .
- any of the following materials may be employed: polybutadiene, polyisoprene, ethylene- propylene copolymers, polyurethane elastomers, polyethers, polyesters, fluorelastomers, silicone elastomers, thermoplastic elastomers and the like.
- Thermoplastic elastomers are preferred.
- thermoplastic matrix resins are low density polyethylene, polyamides, ionomers, polyesters, and the like. Low density polyethylene is preferred for most applications.
- Matrix resins can be chosen to melt at a particular processing temperature to permit molding of temperature sensitive fabrics.
- Matrix resin should be present in an amount which will completely impregnate the fabric of the panels. Too little matrix resin will cause poor consolidation of the molded composite panel and too much will adversely affect the ballistic protection limit of the molded panel.
- the composite panels of this invention should be 5 to 50 weight percent matrix resin, more preferred is 5 to 30 weight percent matrix resin and most preferred is 8 to 18 weight percent matrix resin.
- the fabric is cut into layers of the desired shape and sizes and then the layers are stacked together with a matrix resin material.
- the layers are alternating fabric and matrix resin material and, generally, the matrix resin material is a film or a coating on the fabric.
- the layers are then molded, by the application of heat and pressure, to make a hard ballistic panel.
- the areal density of the molded composite panel of this invention is less than 28 kg/m 2 to meet Protection Level III in NIJ (National Institute of Justice) Standard 0103.01 or its foreign equivalents such as the UK RF1 Level, as specified by UK police Scientific Development Branch (PSDB) Body Armour Standard 1995. More preferred areal density is less than 25 kg/m 2 to meet the aforementioned protection level and most preferred areal density is less than 22.5 kg/m 2 .
- the process of this invention saves considerable labor cost during panel making compared with the uni-directional process.
- the composite of this invention can be made by persons having conventional weaving equipment and processes without additional investment in expensive uni- directional machinery.
- linear Density The linear density of a yarn is determined by weighing a known length of the yarn. "denier” is defined as the weight, in grams, of 9,000 meters of the yarn; and “dtex” is defined as the weight, in grams, of 10,000 meters of the yarn.
- the measured denier or dtex of a yarn sample, test conditions, and sample identification are fed into a computer before the start of a test; the computer records the load-elongation curve of the yarn as it is broken and then calculates the properties.
- twist multiplier (TM) of a yarn is defined as:
- the yarns to be tested are conditioned at 25°C, 55% relative humidity for a minimum of 14 hours and the tensile tests are conducted at those conditions.
- Tenacity (breaking tenacity) , elongation to break, and modulus are determined by breaking test yarns on an Instron tester (Instron Engineering Corp., Canton, Mass . ) .
- Tenacity, elongation, and initial modulus are determined using yarn gage lengths of 25.4 cm and an elongation rate of 50% strain/minute. The modulus is calculated from the slope of the stress-strain curve at 1% strain and is equal to the stress in grams at 1% strain (absolute) times 100, divided by the test yarn linear density.
- Ballistics Performance Two types of ballistic tests were performed in the context of this invention: (i) Ballistic Limit (V 50 ) and (ii) Certification (V 0 ) types of testing in accordance with a ballistic specification. The objective of Ballistic Limit (V 50 ) tests is to compare the relative performance of different materials against a selected projectile.
- the objective of Certification tests is to demonstrate that, having achieved the Ballistic Limit (V 50 ) required, the system under test can withstand the shootings in accordance with the particular shooting sequence and pattern, as specified in the test.
- the shooting sequence and pattern are described in specific examples .
- Ballistic tests of multi-layer panels are conducted to determine the ballistic limit (V 50 ) in accordance with a variation of the NATO Standard (Stanag 2920 - Ballistic Test Method for Personal Armours), generally, as follows: A panel to be tested is placed against a backing material of Roma Plastina
- the projectiles are propelled from a test barrel capable of firing the projectiles at different velocities.
- the first firing for each panel is for a projectile velocity estimated to be the likely ballistics limit (V 50 ) .
- the next firing is for a projectile velocity of about 30 meters (98 feet) per second less in order to obtain a partial penetration of the panel.
- the first firing yields no penetration or partial penetration the next firing is for a velocity of about 30 meters (98 feet) per second more in order to obtain a complete penetration.
- subsequent velocity increases or decreases of about 15 meters (49 feet) per second are used until enough firings are made to determine the ballistics limit (V 50 ) for that panel.
- the ballistics limit (V so ) is calculated by finding the arithmetic mean of an equal number of at least two of the highest partial penetration impact velocities and the lowest complete penetration impact velocities, provided that there is a difference of not more than 40 meters (131 feet) per second between the highest and lowest individual impact velocities.
- Three composite panels were made using fabrics woven from three different para-aramid yarns as shown below.
- the fabrics were in a plain weave and had an areal density of 185 - 190 grams per square meter.
- All of the yarns were 840 denier with 560 filaments, were made from poly (p-phenylene terephthalamide) and were available from E. I. du Pont de Nemours and
- each fabric 110 pieces of fabric 25x30 centimeters were cut and stacked, alternating with sheets of linear low density polyethylene film having a thickness of 0.02 mm for a matrix resin. Each stack was molded at a pressure of 40 to 60 bars and 150 degrees C for at least 20 minutes and was then cooled and trimmed to make a panel. The panels had 14 weight percent matrix resin and areal densities of 25.5 to 25.7 kilograms per square meter. Each panel was tested for V 50 Ballistic Performance using an 0.308 Winchester (7.62x51 NATO Ball, Norma - 17622) against a Roma Plastilina No. 1 backing block conditioned in accordance with NIJ Standard 0103.01.
- Three composite panels were made using fabrics woven from two different high tenacity yarns as shown below.
- the fabrics were in a plain weave and had an areal density of 185 grams per square meter.
- Yarn D was made from a poly (p-phenylene 2,6- benxobisoxazole) (PBO) and was available from Toyobo Co., Ltd under the tradename of Zylon; and yarn E was made from poly (p-phenylene terephthalamide) (PPDT) and was available from E . I . du Pont de Nemours and Company under the tradename of Kevlar 964C. Each yarn had about 667 filaments and a denier of 1000.
- a molded composite panel was made by stacking 122 layers of a plain weave woven fabric alternately with layers of linear low density polyethylene as a matrix resin and then subjecting the stack to a pressure of 40 bars at 150 degrees C for a period of 40-50 minutes.
- the fabric was made using yarns of PPDT having a denier of 600 and a tenacity of 28.1 grams per denier, available from E. I. du Pont de Nemours and Company under the tradename Kevlar A-200.
- the fabric had an areal density of 160 grams per square meter.
- the matrix resin, before molding, was in the form of film with an areal density of 20 to 22 grams per square meter.
- the composite panel had an areal density of 22 kilograms per square meter.
- the panel was tested in accordance with the procedure of the United Kingdom, PSDB Hand-Gun Level II using a NATO 7.62x51 L2A2 UK origin bullet. The panel was tested before a backing block of Roma Plastilina No. 1 conditioned in accordance with UK PSDB Ballistic Body Armour Standard (1995) . The tests were carried out by firing three rounds of the specified bullet from a barrel capable of firing the projectiles at different velocities. In this case, the allowed velocities for "Fair Shots" fell within the range of 830 ⁇ 15 m/s . The three shots were fired with a pattern of triangle, of which the distance between each shots was at least 100 mm. The results were as follow:
- Example 4 The panel of Example 3 was tested as an insert panel for a soft vest designed to meet NIJ Standard 0103.01, protection level III.
- a NATO 7.62x51 Ball SMI (Italian origin) was used as the bullet.
- Shooting was carried out with a NATO Standard Issue 7.62 Calibre rifle capable of delivering projectiles at velocities at 838 ⁇ 15 m/s.
- Three shots were fired following a pattern of a triangle, of which the distance between two shots was at least 100 mm. The results were as follow:
- Panels having the same composition as Panel A from Example 1 were tested as insert plates for various soft vests under various testing methods .
- the panels had areal densities of 24.4 to 25.5 kilograms per square meter.
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002321626A CA2321626A1 (en) | 1998-04-15 | 1999-04-14 | Composite panels for protection against rifle bullets |
AU60170/99A AU6017099A (en) | 1998-04-15 | 1999-04-14 | Composite panels for protection against rifle bullets |
PL99343761A PL343761A1 (en) | 1998-04-15 | 1999-04-14 | Composite panels for protection against rifle bullets |
BR9908409-0A BR9908409A (en) | 1998-04-15 | 1999-04-14 | Molded composite panel |
EP99953378A EP1070226A2 (en) | 1998-04-15 | 1999-04-14 | Composite panels for protection against rifle bullets |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US8179598P | 1998-04-15 | 1998-04-15 | |
US60/081,795 | 1998-04-15 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1999061862A2 true WO1999061862A2 (en) | 1999-12-02 |
WO1999061862A3 WO1999061862A3 (en) | 2000-03-09 |
Family
ID=22166457
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1999/008235 WO1999061862A2 (en) | 1998-04-15 | 1999-04-14 | Composite panels for protection against rifle bullets |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP1070226A2 (en) |
CN (1) | CN1297525A (en) |
AU (1) | AU6017099A (en) |
BR (1) | BR9908409A (en) |
CA (1) | CA2321626A1 (en) |
HU (1) | HUP0103790A2 (en) |
PL (1) | PL343761A1 (en) |
TR (1) | TR200002979T2 (en) |
WO (1) | WO1999061862A2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002101319A1 (en) * | 2001-06-12 | 2002-12-19 | Teijin Twaron Gmbh | Laminated ballistic structure comprising alternating unidirectional and thermoplastic layers |
WO2003053676A1 (en) * | 2001-12-19 | 2003-07-03 | E.I. Du Pont De Nemours And Company | Multiple threat penetration resistant articles |
WO2005080909A2 (en) * | 2003-11-14 | 2005-09-01 | Ultra Shield, Inc. | Soft armor |
WO2010019297A2 (en) * | 2008-05-14 | 2010-02-18 | E. I. Du Pont De Nemours And Company | Ballistic resistant body armor articles |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111267429A (en) * | 2020-03-13 | 2020-06-12 | 南通大学 | UHMWPE fiber reinforced resin-based soft bulletproof material |
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US3673143A (en) | 1970-06-24 | 1972-06-27 | Du Pont | Optically anisotropic spinning dopes of polycarbonamides |
US3819587A (en) | 1969-05-23 | 1974-06-25 | Du Pont | Wholly aromatic carbocyclic polycarbonamide fiber having orientation angle of less than about 45{20 |
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WO1993020400A2 (en) | 1992-03-25 | 1993-10-14 | The Dow Chemical Company | Ballistic-resistant article and process for making the same |
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US4457985A (en) * | 1982-03-19 | 1984-07-03 | Allied Corporation | Ballistic-resistant article |
US4623574A (en) * | 1985-01-14 | 1986-11-18 | Allied Corporation | Ballistic-resistant composite article |
US4726922A (en) * | 1985-04-04 | 1988-02-23 | E. I. Du Pont De Nemours And Company | Yarn drying process |
CA1335913C (en) * | 1987-12-15 | 1995-06-13 | Louis Henry Miner | Rigid composite |
US4916000A (en) * | 1987-07-13 | 1990-04-10 | Allied-Signal Inc. | Ballistic-resistant composite article |
US5006390A (en) * | 1989-06-19 | 1991-04-09 | Allied-Signal | Rigid polyethylene reinforced composites having improved short beam shear strength |
US5343796A (en) * | 1990-03-08 | 1994-09-06 | Allied-Signal Inc. | Armor systems |
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- 1999-04-14 PL PL99343761A patent/PL343761A1/en unknown
- 1999-04-14 TR TR2000/02979T patent/TR200002979T2/en unknown
- 1999-04-14 CN CN99805081.4A patent/CN1297525A/en active Pending
- 1999-04-14 HU HU0103790A patent/HUP0103790A2/en unknown
- 1999-04-14 BR BR9908409-0A patent/BR9908409A/en not_active IP Right Cessation
- 1999-04-14 EP EP99953378A patent/EP1070226A2/en not_active Withdrawn
- 1999-04-14 CA CA002321626A patent/CA2321626A1/en not_active Abandoned
- 1999-04-14 WO PCT/US1999/008235 patent/WO1999061862A2/en not_active Application Discontinuation
- 1999-04-14 AU AU60170/99A patent/AU6017099A/en not_active Abandoned
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002101319A1 (en) * | 2001-06-12 | 2002-12-19 | Teijin Twaron Gmbh | Laminated ballistic structure comprising alternating unidirectional and thermoplastic layers |
HRP20030973B1 (en) * | 2001-06-12 | 2011-02-28 | Teijin Aramid Gmbh | Laminated ballistic structure comprising alternating unidirectional and thermoplastic layers |
WO2003053676A1 (en) * | 2001-12-19 | 2003-07-03 | E.I. Du Pont De Nemours And Company | Multiple threat penetration resistant articles |
US6737368B2 (en) | 2001-12-19 | 2004-05-18 | E. I. Du Pont De Nemours And Company | Multiple threat penetration resistant articles |
WO2005080909A2 (en) * | 2003-11-14 | 2005-09-01 | Ultra Shield, Inc. | Soft armor |
WO2005080909A3 (en) * | 2003-11-14 | 2005-12-15 | Ultra Shield Inc | Soft armor |
US7251835B2 (en) | 2003-11-14 | 2007-08-07 | Ultra Shield, Inc. | Soft armor |
WO2010019297A2 (en) * | 2008-05-14 | 2010-02-18 | E. I. Du Pont De Nemours And Company | Ballistic resistant body armor articles |
WO2010019297A3 (en) * | 2008-05-14 | 2010-07-15 | E. I. Du Pont De Nemours And Company | Ballistic resistant body armor articles |
US8015617B1 (en) | 2008-05-14 | 2011-09-13 | E. I. Du Pont De Nemours And Company | Ballistic resistant body armor articles |
Also Published As
Publication number | Publication date |
---|---|
TR200002979T2 (en) | 2001-02-21 |
WO1999061862A3 (en) | 2000-03-09 |
AU6017099A (en) | 1999-12-13 |
BR9908409A (en) | 2001-10-09 |
CA2321626A1 (en) | 1999-12-02 |
HUP0103790A2 (en) | 2002-10-28 |
EP1070226A2 (en) | 2001-01-24 |
CN1297525A (en) | 2001-05-30 |
PL343761A1 (en) | 2001-09-10 |
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