Our patented BlastWrap® material has been designed to mitigate blasts and suppress flash fires resulting from explosions, regardless of the material or compound causing the explosion. We believe that this technology can be used to create new finished products or designed to retrofit existing products.
Mitigation or attenuation of blast effects is the dissipation of blast energy so that acoustic and shock waves, peak overpressure, reflected peak overpressure, impulse and afterburn (the rapid burning of combustible materials in the “hot zone”, including soot, occurring so fast that it adds to blast effect from the original explosive) are reduced. This reduction is accomplished through both physical and chemical processes that are triggered when a blast occurs. The remaining energy is transmitted at a slower, more sustainable level. The amount of reflected energy is significantly reduced with mitigation. Unlike hardening systems, the performance of our products is not related directly to material thickness and therefore we believe our products have a greater range of uses producing the same or better effectiveness against blast effects.
Our BlastGard® technology is designed to mitigate blast and rapid combustion phenomena through numerous mechanisms. The relative contribution of each mechanism depends upon the intensity and nature of the impinging hazard. Shock wave attenuation, for example, is dominant in mitigating mechanical explosions. Our products attempt to emulate unconfined conditions and accelerate attenuating processes that occur in free air. Thus BlastWrap® does not try to resist blasts (which physically intensify blast phenomena); it mitigates them. BlastWrap® can be used as part of confining assemblies (containers and blast walls). In effect, BlastWrap® is a ‘virtual vent’.
Our BlastWrap® products are made from two flexible films arranged one over the other and joined by a plurality of seams filled with attenuating filler material (volcanic glass bead or other suitable two-phase materials), configurable (designed for each application) with an extinguishing coating. Together, this combination of materials is designed to mitigate a blast while at the same time eliminate fireballs or flame fronts produced by the blast.
We believe that this system is unique because it:
- Works 24 hours a day
- Quenches fireballs and post blast fires
- Reduces blast impulse and pressure
- Does not dispense chemical extinguishants
- Uses neither alarms, sensors, nor an activation system
- Is nontoxic and ecologically friendly
Our BlastGard® Technology extracts heat, decelerates both blast wind and shock waves, and quenches the hot gases in all blasts and fireballs. BlastWrap® does not interact with the explosive elements, and is therefore not altered by them. However, after a single intense detonation, BlastWrap® must be replaced.
For blasts that produce fireballs or intense hot gases at higher pressures, BlastGard® Technology has the ability, through testing, to cool the blast zone rapidly, thereby reducing structural damage.
In detonation of high explosives, where at least half of the energy released is in the shock wave, attenuation occurs even more rapidly, and in doing so substantially reduces explosion phenomena.
The performance of BlastWrap® proprietary technology is independent of scenario and environment, which means that it does not matter where the physical location is, how the basic product form is used or the environment in which the event takes place. The basic product form can be used as a stand-alone material (as linings, curtain barriers, or as structural material), or can be laminated or otherwise affixed to a wide range of product forms such as insulation (thermal and acoustic), ballistic armor, or packaging materials. BlastWrap® products can thus provide blast and fire protection in flooring, wall, and roof constructions, in packaging, in storage cabinets and other containment structures, and aboard all types of vehicles, ships, and aircraft.
WHAT IS BLASTWRAP®?
BlastWrap is a custom- configurable, flexible, light weight and durable “bubble wrap-style” material which is effective against all blast, deflagration (blast wave at less than sonic velocity that has potential to cause damage) and fire threats.
WHAT DOES BLASTWRAP® DO?
An explosion results from the rapid conversion of chemical energy into rapidly expanding high-pressure gases. The rapidly expanding gases compress the surrounding air much like a piston and create a shock wave that travels ahead of the explosive gases. The "overpressure" (pressure above ambient) in a shock wave acts to "pre-condition" the air as it passes through to make the following accelerated gas "piston" more damaging. This high intensity, short duration overpressure wave transfers impulse (momentum) which stresses, damages or destroys structures in its path. Impulse follows the shock wave but lingers and decays with time. The negative phase is a partial vacuum that "whips" lighter structures to magnify damage. A shock wave can be likened to an initial hard punch, while the impulse is more like a powerful bulldozer. Any reduction in the effective power of the shock wave will increase the target's capability to withstand the destructive impulse.
BlastWrap is scientifically engineered and designed to remove much or most of the energy from an explosion. It actually interferes with the blast energy process. There are two primary components of any explosion – mechanical effects (which are shock impulse and acoustic waves) and chemical/thermal effects (fireball). In fact, shock impulse is the real killer in a high explosive blast. BlastWrap dissipates blast shock wave energy through irreversible processes, such as drag, turbulence, friction, viscosity, reflection, etc.); and at the same time, BlastWrap dramatically quenches the flame fronts or fireballs created as a result of the explosion in milliseconds. This is important because a fireball (which represents the rapid gas expansion by the burning of materials) creates enormous pressures, commonly called “the blast wind.” As a result of that, BlastWrap also kills the phenomena of afterburn which can initiate post-blast fires.
BlastWrap is a concept for assemblies (not a chemical compound) from which blast protection products are built to save lives and reduce damage to valuable assets from explosions. BlastGard® technology mitigates blast and rapid combustion phenomena through numerous mechanisms. The relative contribution of each mechanism depends upon the intensity and nature of the impinging hazard. Shock wave attenuation, for example, is dominant in mitigating mechanical explosions. BlastWrap products attempt to emulate unconfined conditions and accelerate attenuating (weaken, reduce in force) processes that occur in free air. Thus BlastWrap does not try to resist blasts (which physically intensify blast phenomena); it mitigates them. In effect, BlastWrap is a ‘virtual vent’. Lethal fragments may be captured by adding anti-ballistic armor layers on the product surface away from a blast.
BlastWrap® has been designated as Qualified Anti-Terrorism Technologies and placed on the “Approved Products List for Homeland Security.” We were issued the “Designation” and “Certification” for our technology by the Department of Homeland Security under the Support Anti-Terrorism by Fostering Effective Technologies Act of 2002 (the SAFETY ACT) in July of 2006. In the 4th quarter of 2011, the designation and certification was extended for another five years.
The SAFETY ACT “Designation” and “Certification” are intended to support effective technologies aimed at preventing, detecting, identifying, or deterring acts of terrorism, or limiting the harm that such acts might otherwise cause. The criteria technologies must meet to be awarded “Designation” and “Certification” status include: the availability of the technology for immediate deployment in public and private settings; the magnitude of risk exposure to the public if the technology is not deployed; the evaluation of scientific studies being feasibly conducted to assess the technology’s capability to substantially reduce risks of harm; and the technology’s effectiveness in facilitating the defense against acts of terrorism. BlastWrap is designed to mitigate the blast effects of an explosion by rapidly extinguishing the fireball, eliminating burns and post-blast fires, and reducing the subsequent overpressures by more than 50%, thus reducing damage to people and property.
The SAFETY ACT legislation was designed to encourage the development and rapid deployment of life-saving antiterrorism technologies by providing manufacturers or sellers with limited risk to legal liability. It was also designed to harness the nation’s scientific and technological resources to provide federal, state, and local officials with the technology and capabilities to protect the United States from terrorist acts. One area of focus for the Department of Homeland Security is catastrophic terrorist threats to the nation’s security that could result in large-scale loss of life and major economic impact. The SAFETY ACT fosters research of technologies to counter threats both by evolutionary improvements to current capabilities and development of revolutionary, new capabilities.
GSA APPROVED PRODUCT
General Services Administration enters into contracts with commercial firms to provide supplies and services at stated prices. This streamlined procurement vehicle is available to federal agencies and other organizations to obtain engineering and environmental services from pre-qualified vendors. GSA has completed federally mandated contracting requirements—competition, pricing, small business and other contracting evaluations—normally required prior to obtaining services. BlastGard’s finished products are in the GSA System.