The windshield in our car is made of a material called laminated glass. But how does it work, and what happens to the glass when you break it? Laminated glass is made by taking plastic and glass, and merging the two together. So you can look at the process in a very simple way as taking a piece of glass, and sticking plastic on top of the sheet of glass. Then you take another piece of glass and sandwich that on top of the plastic layer. This process is called sandwiching the glass. Once this is done the plastic layer, or sometimes layers, keeps the glass together once broken. Laminated auto glass is very flexible. The plastic layer helps keep you in the car when you “forgot to wear your seat belt”. Another very important part of laminated glass is that the glass stops 97% of the UV rays that come from the sun. And have you ever notice that the sound inside your car is so much less than outside the car? Laminated glass reduces the sound levels tremendously. So in all, we can safely assume that the safety glass in our windshield is absolutely safe. Oh No A Crack In The Windshield! It happens to all of us. It is a beautiful fall day and the sun is shining. You have set your mind on taking a nice drive up to Vermont to see the fall foliage. It really is the perfect day to do so. Once on the highway, you are enjoying a good CD while you look at your wife’s sweet smile and then it happens. All out of the blue this big truck in front of you looses a little pebble, and it hits your windshield with almost surgical precision, and there it is, a crack. The smile on your wife’s face disappears and you can already feel the pain in your wallet. This is not going to be cheap is the first thing on your mind. This is really good information and I appreciate you sharing it. It’s great to have someone so knowledgeable commenting! Please keep them coming!