Teaming up with local law enforcement and convenience store owners, Scorpion Window Film, Cloverdale, Indiana presented a possible solution to increase the safety for 24-hour convenience stores.  Using 15 mil security film installed on ¾ inch glass, Scorpion put their film to the test.  In the last year, concerns for the safety of 24-hour convenience store employees have been a major concern in the State of Indiana. Looking back to 2011, a store clerk, Marci Birnell, was shot in the face at an Indianapolis convenience store, beginning discussions of increased safety.  Her recovery is nothing short of a miracle.  With another fatal attack in Kokomo, Indiana in 2012, family members of the victims demanded to be heard.  A committee consisting of Department of Labor, IOSHA, and Indiana Petroleum Marketers and Convenience Store Owners listened to hours of testimony from the family members of various victims.  Before the meeting, a 37 page booklet with safety recommendations was presented to the committee.  One of the recommendations presented in the booklet was bullet proof barriers.

Testing Procedure:

Substrate:  ¾ inch glass

Film Installed:  Scorpion 15 mil Security Film

Caliber of Gun:  9 MM

Distance:  25 yards

Number of Shots:  2

Result:  Glass intact, stopping bullets

Ballistic Capabilities:

The thicker multi-ply security films will offer some resistance to small caliber handgun bullets when there is enough glass substrate to dissipate bullet destruction.  Security films by themselves offer no ballistic resistance. However, when films in excess of 12 mils are installed to glass comprising of at least a nominal thickness of ½”, then it is possible to impede small caliber handgun bullets. These impacting bullets have to be typical of random “drive-by” shootings. This means at a stand-off distance in excess of 25 feet and impact points of no closer than 12” from shot impact to shot impact. The use of tempered glass limits the glass capabilities by breaking into small ¾” pieces, (not desirable for resistance to projectiles). The larger the non-impacted glass area, the better to resist projectile performance by providing a solid resistance. Variables that can limit ballistic capability are:  decreased stand-off distances, closer impact points, glass selections, glass mounting techniques, glass compositions such a laminated or air gap double insulated units, bullet configurations, velocities, etc.

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