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Vehicle glass isglass used to provide light access tomotor vehicles. It includeswindscreens, side and rear windows (includingquarter glass andopera windows) and glass panel roofs such assunroofs.
Vehicle glass is generally held in place byglass run channels, which also serve to contain fragments of glass if the glass breaks.
Back glass is also called rear window glass, rear windshield, back shield, or rear glass. It is the piece of glass opposite the windshield. Back glass is made fromtempered glass, also known assafety glass, and when broken shatters into small, round pieces.[1] Windshields are made oflaminated glass, which consists of two layers of glass, separated by a vinyl sheet.[2]
Vehicle glass may containheating coils orantennae.[3]
Windscreens can be repaired after chips or cracks damage the outer windscreen layer but do not damage thePVB or inner layer. Crack repair depends upon the size, position, type, and depth of crack. In most cases cracks up to 2 inches (5.1 cm) are repairable.
Local laws vary regarding safe windscreen repair.
Windscreen repair requires clearing the impact area and removing air throughvacuum creation. A transparent fluid is used to fill the crack. The fluid is than treated withUV light to chemically solidify the fluid. Professional repairs can achieve clarity up to 95% with complete structural integrity.
Vehicle glass other than the windshield shatters on impact and hence needs replacement. Most vehicle body glass is not bonded and does not requireadhesive for installation. Windscreens, sunroofs and rear window glass are generally bonded. They require adhesive to bond the glass with the vehicle frame.
US Federal Motor Vehicle Safety Standard 212/208 ensures reliability of adhesives used in US vehicles. For a bonded glass, replacement can take up to an hour. Time must be allowed to allow the adhesive tocure. This is known as "Safe Drive Away Time" or "Minimum Drive Away Time".[citation needed]
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