The flexible polyurethane screen is a screening medium specifically designed for efficient screening and wear resistance. It is made by combining wear-resistant polyurethane material with an embedded steel wire structure, offering both toughness and flexibility. Its open area is significantly increased compared to traditional metal wire mesh. It effectively prevents clogging by utilizing the dual vibration principle of the screening machine and screen mesh, making it particularly suitable for screening wet, sticky materials.
No. | Inspection Item | Polyester Type | Polyether Type | ||||
---|---|---|---|---|---|---|---|
1 | Hardness/Shore A | 80±2 | 85±2 | 90±2 | 95±2 | 90±2 | 95±2 |
2 | Tensile strength/MPa | ≥ 40 | ≥ 43 | ≥ 46 | ≥ 48 | ≥ 30 | ≥ 40 |
3 | Elongation at break/% | ≥ 600 | ≥ 580 | ≥ 550 | ≥ 500 | ≥ 400 | ≥ 300 |
4 | Tear strength/(kN/m) | ≥ 70 | ≥ 75 | ≥ 85 | ≥ 100 | ≥ 75 | ≥ 90 |
5 | Resilience/% | ≥ 25 | ≥ 25 | ≥ 25 | ≥ 25 | ≥ 35 | ≥ 35 |
6 | Relative volume wear/mm3 | ≤ 60 | ≤ 60 | ≤ 60 | ≤ 60 | ≤ 40 | ≤ 40 |
Flexible polyurethane screens are widely used in industries such as mining, coal, chemical, and building materials. They are particularly suitable for efficient screening of wet, sticky, and easily clogged materials, and can operate stably for long periods under harsh conditions.