Crumb Rubber Overview
Crumb rubber is a versatile tire derived material that adds value to molded rubber products, playgrounds and sport safety surfaces, composites, automotive parts, tires and asphalt modifications, etc. Crumb rubber can be get by shredding scrap tires or other rubber into uniform flakes with tire or rubber shredder or crumb rubber maker.
Generally speaking, crumb rubber is manufactured from two primary materials: tire buffing and scrap tire rubber. Tire buffing is a byproduct of tire retreading, scrap tire rubber comes from three types of tires: Passenger car tires, which represent about 84 percent of units or approximately 65 percent of the total weight of U.S. scrap tires; Truck tires, which constitute 15 percent of units, or 20 percent of the total weight of U.S. scrap tires; and off-the-road tires, which account for 1 percent of units, or 15 percent of the total weight of U.S. scrap tires. End product yields for each of these tire types are affected by the tire’ s construction, strength and weight.
On average, 10 to 12 pounds of crumb rubber can be derived from one passenger tire. Crumb rubber is always inherent reinforcing materials such as steel and fiber removed along with any other type of inert contaminants such as dust, glass, or rock. Overall, a typical scrap tire contains 70% recoverable rubber, 15% steel, 3% fiber and 12% extraneous material (e.g. inert fillers) by weight. If you have lots of scrap tires and need to shred them into Crumb Rubber, please contact Harden to ask about crumb rubber shredder.