Abstract:
[0067] An assembly useful for constructing concealable, flexible, lightweight protective body armor includes a flexible support layer to which is bonded a mosaic of rigid, adjacent tiles having a high bending performance, such as type 5 titanium alloy, which includes 6% aluminum and 4% vanadium by weight. The inner support layer can include woven para-aramid and/or STF-treated KevlarTM. The tiles can have interlocking and/or thickened edges. An additional backing layer can include para-aramid and/or carbon nanofiber embedded UHMWPE UD-laminate. An inner layer can have high moisture transport, anti-microbial properties, and low friction. An outer layer can be shaped with anatomical features to hide the armor. The assembly can be flame resistant. Assemblies with 2mm thick tiles and total thickness less than 5mm can provide V50 protection against 9mm FMJ projectiles at more than 1000 feet/second, and can also protect against knife and spike assaults at 65 Joules force.
Abstract:
A flexible armor system adaptable to a garment suitable for extremity protection uses planar, polygon-shaped solid elements made of ceramic cores wrapped in high strength fabric and arranged with ratable edge and intersection protection as a flexible mosaic array which is bonded between an elastic strike side spall cover and a high tensile strength flexible backer layer, further supported by a substantial fiber pack. A progressive mode of localized system failure during a ballistic strike includes: a projectile penetrating the spall cover, fracturing the ceramic core of a wrapped SE while being partially deformed; the deformed projectile accelerating the fractured but still wrapped solid element before it so as to free the solid element from the array and drive it through the flexible backer as a combined mass at a reduced velocity into the fiber pack.
Abstract:
A composite fabric, multi-layer protective panel alternative to an exclusively fine denier, continuous filament yarn protective fabric, multi-layer protective panel. Fabric layers consist of warp and fill sheets of continuous filament yarn of relatively higher denier at a relatively lower cover factor that have their yarns interlocked in a woven pattern by overlapping warp and fill sheets of staple yarns of relatively lower denier, thus raising effective cover factor. Staple yarns have a conspicuous amount of hairiness for greater yarn stability. Ballistic performance is enhanced by depositing a molten mass of fiber material and protruding staple fiber filament ends on a striking projectile upon impact on outer layers, and transporting the additional mass into the panel with a higher coefficient of friction.
Abstract:
The present disclosure describes puncture-resistant fabric layers comprising woven fabrics with unique, densely-woven structures. For example, such a fabric layer ca comprise a high cover factor woven fabric having a fill yarn cover factor of at least about 75 % of full and a warp yarn cover factor of at least about 100 % of full formed of a plurality of fill yarns and a plurality of warp yarns, wherein the weight per unit length of the fill yarns is less than the weight per unit length of the warp yarns. Such constructions can, in some embodiments, consist essentially of high tenacity fibers having a tensile breaking strength of at least about 10g/Denier. Such high cover, small fill yarn constructions enable the disclosed fabrics to be woven to have a decreased overall weight per unit surface area and an improved tensile balance, when compared to known high cover factor, densely woven fabric constructions. Also disclosed are various techniques for forming light weight yarns comprising or consisting essentially of high tenacity fibers for forming the small fill yarns and/or warp yarns of the high cover factor, small fill yarn-constructed fabrics disclosed. The high cover factor, small fill yarn-constructed woven fabrics can, in some embodiments, comprise or consist essentially of natural and/or synthetic fibers having a tensile breaking strength less than about 10 g/Denier, yielding densely woven fabrics with improved puncture, cut, and tear resistance when compared to fabrics formed of the same materials but with conventional woven constructions.
Abstract:
A self-decontaminating fabric is manufactured from fibers such as Tencel having high surface energy and low surface roughness. Novel scouring methods eliminate substantially all contaminants from the fibers, and a novel coating process applies an anti-pathogen coating such as a halogen compound to the fabric so as to provide rapid deactivation of pathogens on contact. Novel charging methods activate or reactivate the coating, typically by exposure to chlorine. The coating is substantially free of gap regions where pathogens can survive. The high surface energy of the fibers allows a high coating concentration and provides close contact between attached pathogens and the coating. The low surface roughness reduces the pickup of pathogens by the fibers. Multi-layer embodiments include an outer layer configured for maximum anti-pathogen coating concentration, and an inner layer configured for a reduced coating concentration that is compatible with skin contact.
Abstract:
An assembly useful for constructing protective armor includes a plurality of protective cards suspended in a parallel, louvered relationship between inner and outer mesh layers, thereby permitting air to flow through the assembly while providing a continuous barrier against projectiles approaching from most directions. In some embodiments, the outer mesh layer resists penetration and tends to compress the cards together when struck, causing the cards intercept a projectile that would otherwise pass therebetween. The mesh layers can be para aramid. The mesh can have an open area of 25%, and/or can include leno looper construction. The cards can include thermally pressed and flexed laminated UHMWPE. The mesh yarn can have a denier of 1000 or even 1500, and a stabilizing and/or UV-resistant coating can be included on the outer mesh layer. A plurality of interior card layers can be included, and the assembly can be fire retardant.
Abstract:
A personal cooling system evaporatively cools a wearer of protective clothing, thereby avoiding heat stress, skin irritation due to unevaporated sweat, and excess water drinking. A heat-exchanging fluid such as water or ethylene glycol is circulated between a cooling garment worn under the protective clothing and externally worn cooling fabric that is moistened by water from a reservoir. In some embodiments the reservoir also supplies drinking water. The cooling fabric can be fire retardant, and can be a cape, a cylinder through which air is blown by a fan, or part of the protective clothing itself. Embodiments include a protective chemical barrier also moistened by the evaporation water. Under realistic conditions, more than 125 W/m 2 of heat can be dissipated by a cooling system that weighs less than 6 pounds, has a volume of less than 250 cubic inches, and can operate independently for more than 2 hours.
Abstract translation:个人冷却系统蒸发地冷却防护服的佩戴者,从而避免热应激,由于未蒸发的汗水引起的皮肤刺激和过量的饮水。 诸如水或乙二醇之类的热交换流体在保护衣服下方的冷却衣服和从储存器被水润湿的外部磨损的冷却织物之间循环。 在一些实施例中,储存器还供应饮用水。 冷却织物可以是阻燃剂,并且可以是海角,通过风扇吹送空气的气瓶或防护服本身的一部分。 实施方案包括也被蒸发水润湿的保护性化学屏障。 在现实条件下,超过125 W / m2的热量可以通过重量小于6磅的冷却系统消散,体积小于250立方英寸,可以独立运行超过2小时。
Abstract:
A variety of embodiments of layered and laminated fabric systems, each, preferably, including a puncture-resistant layer are disclosed. The puncture-resistant layer(s) of the layered systems can, in some embodiments, comprise or consist essentially of high tenacity fibers having a tensile breaking strength of at least about 10 g/Denier. The puncture-resistant layer(s) can be combined with one or more additional layers providing one or more desirable attributes of an article of apparel for use in, for example, rugged outerwear (e.g., dyeability, printability, soft hand, breatheability, abrasion resistance, etc.). The puncture-resistant layers can comprise fabrics or non fabrics and, when comprising a fabric, can comprise a woven or non-woven fabric (e.g., felts and knitted fabrics). In some embodiments, puncture-resistant layers of the multi-layer constructions and systems can comprise intimate blend fabrics comprising two or more different fiber types and/or high cover factor, small fill yarn fabrics or, in other embodiments, can comprise one or more conventionally constructed puncture-resistant layer(s).
Abstract:
[0067] An assembly useful for constructing concealable, flexible, lightweight protective body armor includes a flexible support layer to which is bonded a mosaic of rigid, adjacent tiles having a high bending performance, such as type 5 titanium alloy, which includes 6% aluminum and 4% vanadium by weight. The inner support layer can include woven para-aramid and/or STF-treated KevlarTM. The tiles can have interlocking and/or thickened edges. An additional backing layer can include para-aramid and/or carbon nanofiber embedded UHMWPE UD-laminate. An inner layer can have high moisture transport, anti-microbial properties, and low friction. An outer layer can be shaped with anatomical features to hide the armor. The assembly can be flame resistant. Assemblies with 2mm thick tiles and total thickness less than 5mm can provide V50 protection against 9mm FMJ projectiles at more than 1000 feet/second, and can also protect against knife and spike assaults at 65 Joules force.
Abstract:
A non-lethal, sabot-deployed blast shield mitigates a suicide bomber by wrapping around the bomber and positioning a plurality of protective layers over an explosive device to absorb emitted heat, shock waves, and projectiles if the device is detonated. Stand-offs such as inflatable beams or pillows provide break-away zones between the protective layers, allowing some layers to expand to a point of failure and absorb the maximum possible energy. Inner layers absorb shock waves and heat. One or more outer layers resist projectile penetration. Protective layers can be positioned on opposing sides of a suspect in case two explosive devices are present. Shields can deploy with sufficient energy to knock down a bomber. In embodiments, a plurality of shields can be applied without interference therebetween. In some embodiments, a round shield includes bolas which spread the shield in flight in a cast-net dynamic and wrap around the suspect for shield attachment.