The car bumper is a safety device impacting and protecting the car’s body. 20 years ago, the car front & rear bumpers were mainly made of metal materials and punched to be a U-shaped channel with 3mm or more. and with chrome-plated & riveted or welded with the frame rails on the surface. It looks like an attached part.
Along with the automotive industry development, car bumpers have also entered the path of innovation as an important safety device. In addition to maintaining the original protective functions, nowadays car bumper is also pursuing harmony and unity with the body shape and pursuing their own lightweight. In order to achieve this goal, the car front and rear bumpers use plastic currently, which is called a plastic bumper.
The plastic bumper is composed of three parts: an outer plate, cushioning material, and a beam. The outer plate and the cushioning material are made of plastic, and the beam is stamped into a U-shaped groove by a cold-rolled sheet having a thickness of about 1.5 mm; the outer plate and the cushioning material are attached to the beam, and the beam is screwed to the frame longitudinal beam, can be attached at any time or remove it. Plastics used in such plastic bumpers are generally made of polypropylene-based materials and are injection molded. There is also a kind of plastic called polycarbonate in some countries. It is infiltrated into the alloy composition and is alloy injection molding. The processed bumper not only has high strength rigidity but also has the advantage of being weldable, the coating performance is good. so more and more cars use plastic bumpers on current cars.
The plastic bumper is strong, rigidity, and decorated. From a safety point, it is a buffer to protect the car’s body when the car collides. on appearance, it can be combined on the car body easily. It is also a good decoration on the car body and becomes an important part of the decorative car shape now.
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