The application of windshield is in the following; car, air craft, bus, motorbike and tram. Laminated safety glass is the material used in modern windshields that consists of two curved sheets of glass with a plastic layer laminated between them for safety, bonded to the window frame. One of the purposes of windshield is to protect the occupants in the auto mobile from wind and flying debris like rocks, dust and insects. Provision of an aerodynamically formed window towards the front is formed by a windshield. So as to create molecular bonds between the glass and the vehicle a windshield is used for safety through use of an automobile grade urethane.
Replacement of a windshield by an individual requires them to make a choice between glass made from non-OEM makers and choosing a company that deals with OEM windshields. The non-OEM manufacturers are referred to as aftermarket glass. Compliance to the Federal motor vehicle safety standards needs to be ensured by both OEM manufacturers and the non-OEM manufacturers. Benefits of OEM windshields are basically just two. When the automobile industry partners with OEM manufacturers overall functionality and improved performance is enhanced. Through this partnership, OEM manufacturers have greater knowledge of engineering demands on car's windshield and the windshield replacement service required.

By use of original equipment style tooling in OEM windshield replacement service, proper fitting is resulted in the window frame reducing noise and leakage problems. So as to replace a windshield there some steps involved It includes removing the old windshield, preparing the pinch weld, installing the new windshield and finally replacing the windshield gasket.

Any plastic moldings are removed from around the windshield as the first sub step in removing the old windshield. The second sub step is analyzing of the best angle to separate the windshield from the pinch weld. The area of the front of the car where different components are welded together is the pinch weld.

The purpose of the pinch weld is to provide structure while forming the frame of the windshield. A strong but flexible polymer based is the urethane which is cut. The urethane needs to be cut from the inside as its quite effective and allows the use of a razor or knife. In order to make it loose and easily detachable the urethane is cut by use of repeating dragging motion. When the urethane is removed the old windshield can now be removed successfully.

Two people are required in removing of the old windshield as the final sub step in removing of the old windshield. The next process preparing the pinch weld under which cleaning of the visible dirt with brush and plain water is done. Presence of dirt reduces adhesion of urethane and the windshield.

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