The front and rear ends of the car are equipped with bumpers, which not only have decorative functions, but more importantly, they are safety devices that absorb and alleviate external impacts, protect the body and protect the body and the occupants.
Many years ago, the front and rear bumpers of automobiles were mainly made of metal materials. The U-shaped channel steel was punched out of steel plates with a thickness of more than 3 mm, and the surface was chrome-plated. It was riveted or welded with the frame rails, and compared with the body. The large gap seems to be an additional part that looks very unsightly.
With the development of the automobile industry and the large-scale application of engineering plastics in the automobile industry, automobile bumpers, as an important safety device, have also moved on the road of innovation. At present, in addition to maintaining the original protection function of the front and rear bumpers of the automobile, it is also necessary to pursue harmony and unity with the shape of the car body, and to pursue its own lightweight. The front and rear bumpers of a car are made of plastic, and they are called plastic bumpers.