What is a bumper made out of?
Most OEM bumpers are made out of plastic and feature an aluminum or steel reinforcement bar hidden in the middle. Some bumpers may also contain polypropylene in order to help absorb energy during an impact.
Who invented the plastic bumper?
The very first bumper that was designed to absorb impact came into reality back in 1901. It was almost entirely made out of rubber and Inventor Frederick Simms received the patent for this invention in four years later.
When did bumpers become plastic?
The first plastic bumpers were installed by General Motors in the Pontiac GTO model from 1968. This component was made from an elastomer called Endura, in the color of the car body, and was designed to absorb shocks at low speeds without permanent deformation.
How does a bumper work?
When a car hits something at a low speed, the bumper will press backward to use the crumple zone to soften the impact as the foam and fenders absorb the energy. The crumpling of the bumper, fender, and foam limits the amount of damage that can happen to the car and the people inside of it.
What is the best material for a bumper?
Plastic is the preferred material for modern car bumpers for several reasons. First and foremost, plastic is much lighter and more aerodynamic than metal, which improves the car’s fuel efficiency. Plastic is also easier to shape, which is useful during both the manufacturing and bumper repair process.
What material are front bumpers made of?
Materials. Generally, car bumpers are made of a plastic cover reinforced by a bar made of steel, fiberglass composite, plastic or aluminum. In addition to crushable brackets and a bar, bumpers sometimes incorporate polypropylene foam or formed thermoplastic.
Why PP is used for bumpers?
What’s Polypropylene (PP)?
Rugged and highly resistant to many chemical solvents, acids, and bases. It possesses a relatively slippery surface, making it suitable for low-friction applications like gears. It’s this quality that makes PP a viable alternative to plastics like Acetal.
What plastic are bumpers made of?
Car manufacturers use a variety of plastics to make bumpers. The most common include polycarbonates, polypropylene, polyamides, polyesters, polyurethanes, and thermoplastic olefins or TPOs; many bumpers contain a combination of these different materials.
How do they make chrome bumpers?
Chrome plated bumpers start out as steel bumpers which are then electroplated with one or more layers of nickel. That’s topped with a very thin layer of chromium. This withstands stone chips and weather better than paint but it’s not flexible.
Why are car bumpers not made of rubber?
The primary reason why cars have no longer bumpers is due to the federal law that needs rear and front bumper to withstand the results of a lower speed with no or little damage to the car. The law however differs in various nations. Individuals often like a clean look with no rear or front bumpers.