Urethane wheel chocks are about as durable of
by：Tanco Tire,Timax Tyre 2020-11-04
The History of Urethane
Urethane was discovered in 1937 by Otto Bayer in Germany as he and his co-workers were experimenting and developing different types of plastics. The new polyurethanes were not commercially available until the 1950's and were produced in the form of rigid foams used in home insulation. In the 1960's, this product was begun to be used on instrument and door panels on automobiles and in 1969 a new technology using the polyurethanes was introduced. Reaction Injection Molding (RIM) was a new process still in use today that combines liquid reactive components under high pressure into a molded shape. This method creates the strong material that a urethane wheel chock is made of.
Why Wheel Chocks are Important
A urethane wheel chock may almost seem like an afterthought to some, but in reality it is a very important part of the safety process in most industries that operate fleets of vehicles. To use the wheel chock, the vehicle must be placed in Park first and then the parking or emergency brake must be applied. The chocks should be placed firmly against both tires in the direction of the grade, and sometimes on both sides if heavy items are being loaded or unloaded. When properly sized and placed against the tread of the tire, if it is the correct size, it will hold the vehicle and can stop it from rolling if something is knocked against the vehicle unexpectedly or if the parking brake should fail. Testing the chock involves putting the truck in neutral and releasing the parking brake.
Urethane wheel chocks are a good investment, ranging from $15-30 for the smaller trucks and up to $150 for the off-road and all terrain chocks found in mining and construction.