Security window film delays forced entry by functioning as a high-tensile polyester laminate that holds shattered glass in place when impacted by tools like bats, crowbars, or boots. This creates a resilient barrier that forces an intruder to spend significantly more time attempting to breach the opening, providing critical seconds or minutes for alarms to trigger and emergency responders to arrive.
To maximize the effectiveness of this delay, the film must be properly anchored to the window frame. There are two primary methods for this:
- Wet-glazing: This involves using high-strength adhesives to bond the edge of the film to the surrounding window frame.
- Mechanical attachment: This method uses components, such as channel reinforcements or clamps, to physically connect the film to the frame.
Without these anchoring systems, the film offers only basic resistance. When combined with thicker film (typically 8 mil to 12 mil) and a robust frame, these systems can extend delay times from seconds up to several minutes. It is important to note that performance is also influenced by the condition of the existing window frame and the specific tools used by an intruder. Security window film is not bullet-resistant and should not be used for ballistic protection.
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