Why is the back of the car all plastic?
Plastic bumpers have elasticityAnother point is that you had a slight collision or scratched, the plastic bumper has good elasticity, have certain impact performance, that is to say, if the situation did not knock a small touch, plastic bumper can automatically rebound automatic repair, even off the paint, but also better than concave, after all, painting is much cheaper than sheet metal repair
Plastic bumper with strength, rigidity and decoration, from the safety point of view, the vehicle collision accident can play a buffer role, the protection around the body; from the exterior, it is natural in a combination with the body, look into one, has a very good decorative. Also, the development of the car now pursues its own lightweight.
Light weight, corrosion resistance and low costAutomobile production has been mold, in addition to the body will use high strength materials, many components will be used as light weight, corrosion-resistant, easy to process, easy to shape, easy maintenance and replacement of materials. The front and rear bumpers are so that some of the body's external components, such as the fender, may also be lightweight materials such as plastics. Of course, some of the top sports cars will also use a lot of carbon fiber material instead of metal material on the outside body, the purpose is simple: lighter body, faster braking, more safety, and more fuel-efficient.In short: for car prices, the most direct effect is to save manufacturing costs, but not only that, plastic bumpers to a certain extent, but also to protect the interests of consumers.
Plastic material is more favorable to protect pedestriansIn addition to these, plastic bumper can also play a protective effect on pedestrians, after all, the automobile steel is not borne by the bumper, mainly to see the body frame. But because the plastic bumper material, with more flexibility and better absorb the impact force than the metal, so we often see the network of bicycle crash bumper and so on this type of picture, think carefully, if the metal bumper, tragedy is likely to pedestrians and bicycles. Here we need to be clear, and bumper beams is absolutely not the same thing.
