Fragment retention film was credited for saving many lives during the September 2001 terrorist attack on the Pentagon. In the event of a nearby explosion, a building's Achilles heel is typically its glazed surfaces. Shattered into razor sharp fragments and propelled at high speeds, window and door glass can cause severe injury to a building's occupants. In addition, shattered glazing allows blast over-pressure to enter the building. This, too, poses a serious threat to the safety of those inside and outside.
Extensive testing has proven that the threat of injury due to flying glass shards can be greatly reduced by the use of 3M fragment retention window film. These tough, transparent, blast-resistant films consist of multiple, microthin polyester layers that work to hold shattered glazing together and increase glass protection. Consequently, there are fewer fragments and debris capable of inflicting harm.
3M fragment retention films greatly enhance the protective capability of glass in a very unobtrusive manner. These thin, pliable films can be applied quickly and easily over existing windows for bomb blast mitigation. Over the course of many years, they maintain a high level of optical clarity, even during extreme conditions. Unlike thick, single-layered fragment retention films that tend to be stiff and boardy, 3M Ultra Safety & Security films use microthin, cross-woven layers of mylar / polyester that are laminated together to enhance tensile strength and elongation. This patented security film construction delivers superior performance over standard polyester in blast and impact mitigation due to its ability to absorb shock. (Click here to learn why thickness is no substitute for technology.)
Additional blast protection is offered through the use of an attachment system. An attachment system helps to prevent the entire glass pane from being blown out of the window frame. 3M's Ultraflex attachment system is a structural silicone that bonds the fragment retention film to the glass to the frame. Testing has shown that 3M's Ultraflex wet glaze attachment system outperforms the industry's standard and more expensive mechanical batten system. (Click here to learn more about attachment systems.)
3M fragment retention films were tested by a GSA-approved independent agency and achieved a Very High protection level and a Condition 2 on the GSA Security Criteria when tested with a standoff distance of 121 feet and a peak pressure of 9 psi. (Click here to learn more about blast protection standards and testing results.)
3M Ultra Safety & Security films錕?tough, transparent, multiple, microthin polyester layers work to hold shattered glass in place. Consequently, potential burglars are deterred from attempting access through a window that is difficult to break. Clear 3M security films are the perfect solution for a retailer or homeowner seeking smash and grab protection without sacrificing visibility.
3M fragment retention films are maintenance-free, vary in thickness (from 2 mils to 14 mils*), and provide some of the energy benefits associated with 3M sun control films.
Common generic names for 3M security window films include: fragment retention film; anti-terrorism film; blast-resistant film; safety film; security film; safety and security film; mylar film, blast curtain film; glass protection film, and shatter-resistant film.
*1 mil = .001 inches