Polyurethane is a new polymer composite material somewhere between rubber plate and plastic plate; it possesses the high strength of a plastic and the high elasticity of rubber. Polyurethane liner has applications in the cement, building, metallurgical, coal and mining industries, and features:
A wide hardness range. Even when polyurethane is very hard, it still retains the elongation and resilience of rubber. The hardness range of polyurethane elastomer is Shore A10-D80.
High strength. At the hardness of rubber, the breaking strength and load carrying capacity of polyurethane are much higher than those of standard rubber. At a high hardness, the impact strength and bending strength of polyurethane are much higher than those of plastics.
- Wear resistance. The wear resistance of polyurethane is excellent, usually within 0.01-0.10（cm³）/1.61km, or about 3-5 times of that of rubber.
- Polyurethane elastomer is a strong polar polymer compound, having a small affinity with non-polar mineral oil, and is hardly eroded at all by fuel oil or machine oil.
- With its good vibration absorption, polyurethane can play a role in reducing vibrations and buffering, and can replace rubber and springs in the mold making industry.
- Efficient thermal performance
Polyurethane can be produce into Heavy duty screen in bother wet/dry processing environment. It can also be design to suit a dewatering screen environment for gravel, crushed aggregates, mineral sands, hard rocks, precious metals, coal, iron ore, salt and various granular material Polyurethane can also be produce into conveyor belt scraper/cleaner