The front bumper is a safety device that absorbs and mitigates external impact and protects the front and rear of the body. Many years ago, the front and rear bumpers of the car were stamped into steel with steel plates, riveted or welded together with the frame rails, and had a large gap with the body, which looked very unattractive. With the development of the automotive industry and the extensive application of engineering plastics in the automotive industry, the front bumper has also entered the path of innovation as an important safety device. In addition to maintaining the original protection function, the front and rear bumpers of today's cars must pursue harmony and unity with the shape of the car body, and pursue their own lightweight. The front and rear bumpers of the car are made of plastic and are known as plastic bumpers. The plastic bumper of a general automobile is composed of an outer panel, a cushioning material and a beam. The outer plate and the cushioning material are made of plastic, and the beam is punched with a cold-rolled sheet into a U-shaped groove; the outer plate and the cushioning material are attached to the beam.
The plastic bumper is composed of three parts: outer plate, cushioning material and 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 coupled with the frame longitudinal beam, and can be attached at any time. Remove it. Plastics used in such plastic bumpers are generally made of two types of polyester and polypropylene materials by injection molding.
On June 26, 2013, the National Automobile Products Industry Federation, the National Automotive Standardization Technical Committee Body Attachment Technical Committee and Guangdong Dongjian Group jointly released the industry standard of China's "Car Protection Bar". This standard was drafted by Guangdong Dongjian Group. Many domestic research institutes and professional institutions participated in the demonstration and passed the examination and approval of the Ministry of Industry and Information Technology. It is reported that the official announcement of China's "automobile protection bar" industry standard marks a breakthrough in the "zero" industry standard for car protection bars, filling the gap in domestic standards. The standard will be officially implemented nationwide on September 1, 2013, causing great concern to industry manufacturers and distributors.