1. ONE WAY GLASS By:Marcos Muniz

2. What is it? Unidirectional Armor Allows return fire through the glass while protecting from hostile fire Also available for stationary buildings

3. What is it made of? A series of –polycarbonate –acrylic –glass layers merged in a special manufacturing process Held together by a proprietary compounds of special glue or resin compounds

4. Benefits Lighter small cross section profile extremely low distortion clarity level of up to 90%

5. How does it work PROTECTIVE SIDE –When bullet strikes the acrylic outer layer, it compresses, strengthens, and absorbs/distributes the energy. –The polycarbonate layer stretches as it dissipates the remaining bullet energy with no full penetration –Spider webbing occurs on impact side, but inside glass remains undamaged ONE WAY SIDE –Polycarbonate material compresses, acrylic stretches –Bullet passes through soft polycarbonate layer and into acrylic layer which weakens as it stretches –Bullet shatters acrylic, continuing with no loss of velocity or deflection

8. References www.labock.com/english/bpg_oneway.html www.usbulletproofing.com/Ratings.html www.howstuffworks.com Callister, William D. Fundamentals of Materials Science and Engineering: An Integrated Approach 2 nd Ed. Wiley and Sons 2004