The car bumper is a safety device that absorbs and mitigates external impact and protects the front and rear parts of the car body. Many years ago, the front and rear bumpers of cars were stamped into channel steel with steel plates, riveted or welded to the longitudinal beams of the frame, and had a large gap with the car body, which looked very unsightly. With the development of the automobile industry and the extensive application of engineering plastics in the automobile industry, the car bumper, as an important safety device, has also taken the road of innovation. In addition to maintaining the original protection function, the front and rear bumpers of today’s cars also pursue harmony and unity with the body shape and pursue their own lightweight. The front and rear bumpers of cars are made of plastic, which people call plastic bumpers. The plastic bumper of a general car is composed of three parts: outer plate, buffer material and crossbeam. Among them, the outer plate and buffer material are made of plastic, and the crossbeam is stamped into a U-shaped groove with cold-rolled thin plates; the outer plate and buffer material are attached to the crossbeam.
