The,Wonder,Laminated,Glass,mod car The Wonder Of Laminated Glass
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A modernautomobiles windshield protects the driver from flying bugs, rocks, and roaddebris. It also protects the driver from nature, which may seem relativelyharmless except when you are traveling at a high speed. Rain, wind, snow, oreven a falling tree leaf can impair a drivers ability to safely operate hisvehicle. Besides protecting a driver from natures elements and road hazards, aproperly installed windshield forms part of the structural integrity of thevehicle in an accident or rollover.In the oldendays, the early windshield was just that a shield from the wind. It protectedthe driver only as long as it didnt shatter or crack. Once the windshieldbroke due to an accident or flying object, the glass could become more deadlythan the accident. Imagine, if you will, large shards of glass spearing towardsyour face, hands, or neck. Worse yet, imagine thousands of pieces of brokenglass flying at you. Decapitation and maiming occurred far more often in thosedays because the windshields were made of common glass.Lawsuits werebrought against Ford in the early days of the automobile. Most of those lawsuits were based on injuries to passengers and the driver from the windshield in anautomobile accident.In 1903, the French chemist Edouard Benedictus invented laminatedglass by accident. During a laboratory experiment, he dropped a glass flask. Theflask had been coated with cellulose nitrate a form of liquid plastic thathardened after it cooled. The dropped glass broke in pieces, but they didntfall apart. The pieces were held together by the liquid coating on the outsideof the flask.It was years before the automobile industry started usinglaminated glass in their windshields. By 1939, the Ford Motor Company assemblylines were using the safer glass, manufactured by a company called BritishIndestructo Glass, Limited in Dagenham, England. Today,American law mandates that all automobile windshields be made of laminatedglass.The laminated glass of modern day is crafted by bonding a layer ofpolyvinyl butyral between two layers of glass. Large press rollers force outany air bubbles sandwiched between the glass and plastic. The final stage ofthe process is dipping the windshield into a heated and pressurized oil bath.The windshield is then ready for installation. It is important to note that allthe cutting and shaping of a windshield must be completed prior to thelamination process. Once the laminate is applied to the glass, it is impossibleto further cut or reshape it.The polyvinyl middle layer of laminated glass prevents thewindshield from splintering or fragmenting apart in thousands of pieces duringan auto accident. If for any reason the windshield should break, the middlelayer will protect the driver and passengers from being sprayed with brokenglass. The glass pieces will stay glued to the polyvinyl layer, keeping theshattered windshield intact in one piece. Every once in a while you may see a movie where an actor iskilled by a large shard of glass from the windshield of a modern vehicle, but you should realize that the director has taken creative license for a more dramatic effect.The windshield of your automobile is truly a great safety devicethat should not be taken for granted!
The,Wonder,Laminated,Glass,mod