PU Coated Rollers
PU coated rollers, short for polyurethane coated rollers, are industrial rollers. A layer of polyurethane material is coated on the surface of a steel roller.
Polyurethane coated rollers have excellent wear resistance, elasticity, and flexibility. This enables them to endure long – term friction when in contact with materials. They can maintain their own stable performance, significantly extending the roller’s service life and reducing the equipment’s maintenance and replacement costs.
Polyurethane Coated Rollers Manufacturers
Properties of PU Coated Rollers
- Wear Resistance
- Chemical Resistance
- Elasticity and Flexibility
- High Surface Finish
PU Coated Rollers Application
- Printing industry: Printing equipment requires high-precision, durable rollers for even ink transfer and smooth sheet transport.
- Papermaking industry: Paper production equipment needs polyurethane rolls with sufficient strength, water resistance and good surface finish to cope with the high temperatures and high humidity of the papermaking process.
- Textile industry: Polyurethane rollers and guide rollers in textile machinery components have anti-static properties, which can improve the stability of textile equipment operation.
- Packaging industry: labeling machine in packaging machinery needs polyurethane rollers to achieve material transport and positioning, and its good friction resistance can meet the high-speed operation requirements of the packaging production line.
- Electronic equipment manufacturing industry: in the production and assembly of electronic components, anti-static polyurethane coated rollers are used in industries sensitive to static electricity, which can effectively prevent static electricity from causing damage to products.
Custom PU Coated Rollers Supplier
- Product Specifications
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Material Properties of the PU Coated Rollers
- Tensile strength: High - quality PU coatings can withstand stretching forces. Their tensile strength ranges from 10 - 50 MPa, depending on the formulation and use.
- Elongation at break: The coating can stretch a certain amount before rupturing. PU coatings usually have elongation at break values from 200% - 800%, allowing them to flex without cracking under various conditions.
- Abrasion resistance: PU coatings resist abrasion well. We test them using standard methods. In high - traffic or abrasive environments, the coating should have a low wear rate for a long service life.
Chemical Resistance of PU Coated Rollers
- Oil and solvent resistance: We can formulate PU coatings to resist different oils, greases, and solvents. This matters in industrial settings where rollers may contact lubricants or chemicals. We specify the resistance by chemical type, concentration, and exposure duration the coating can endure without major degradation.
- Water resistance: In applications with moisture or water exposure, like in food processing or some outdoor equipment, the coating's water resistance is crucial. It should resist swelling, softening, or delamination during long - term water contact.
Surface Finish of PU Coated Rollers
The surface finish of PU coated rollers varies. For low - friction applications (e.g., in high - speed machinery), it can be smooth and polished. For better grip, like on conveyor belts handling irregular objects, it can be textured. We specify surface roughness in micrometers using standard measurement techniques.Temperature Resistance of PU Coated Rollers
Operating temperature range: We can design PU coated rollers for different temperature ranges. Most common formulations can handle temperatures from - 20°C to 80°C. For special applications, high - temperature - resistant coatings can withstand up to 120°C or more, and low - temperature - resistant ones can work well at - 40°C.Polyester polyol/TDI series prepolymer
| Model | D3136 | D3145 | D3160 |
| NCO content / % | 3.6±0.1 | 4.5±0.2 | 6.0±0.2 |
| State of matter At 20℃ | White waxy solid | White waxy solid | White waxy solid |
| MOCA 100g prepolymer dosage /g | 10.5 | 13.2 | 17.2 |
| Viscosity(85℃)/ mpa * s | 1800 | 1200 | 900 |
| Mixing Temperature /℃(prepolymer/MOCA) | 85/120 | 80/120 | 75/120 |
| Gel time /min | 9 | 7.5 | 5 |
| Post vulcanization time (100℃)/h | 10 | 10 | 10 |
| Hardness ( shore A) | 85±1 | 91±1 | 96A±1 (54D) |
| 100% constant tensile stress /MPa | 4.2 | 6.7 | 11.5 |
| 300% constant tensile stress /MPa | 8.3 | 12.5 | 21.3 |
| Tensile strength /MPa | 48 | 52 | 55 |
| Elongation at break / % | 670 | 610 | 530 |
| Tear strength (right angle) /(KN/m) | 75 | 95 | 124 |
| Tear strength (pants type) /(KN/m) | 34 | 42 | 49 |
| Rebound /% | 39 | 32 | 33 |
| Density (25℃)/(g/cm) | 1.26 | 1.27 | 1.29 |
| wearing out by friction mm³ | 40 | 48 | 57 |
Polyether polyols PTMG series prepolymer
| Model | D2135 | D2142 | D3160 |
| NCO content / % | 35±0.1 | 4.2±0.2 | 6.2±0.2 |
| State of matter At 20℃ | White waxy solid | White waxy solid | White waxy solid |
| MOCA 100g prepolymer dosage /g | 10 | 12.1 | 18 |
| Viscosity(85℃)/ mpa * s | 1200 | 750 | 480 |
| Mixing Temperature /℃(prepolymer/MOCA) | 85/120 | 85/120 | 80/120 |
| Gel time /min | 11 | 10 | 6 |
| Post vulcanization time (100℃)/h | 10 | 10 | 10 |
| Hardness ( shore A) | 85±2 | 90±1 | 95A±1 (49D±2) |
| 100% constant tensile stress /MPa | 5.4 | 7.5 | 12.8 |
| 300% constant tensile stress /MPa | 9.6 | 14.1 | 36.3 |
| Tensile strength /MPa | 27 | 33 | 48 |
| Elongation at break / % | 550 | 500 | 350 |
| Tear strength (right angle) /(KN/m) | 65 | 78 | 95 |
| Tear strength (pants type) /(KN/m) | 21 | 28 | 33 |
| Rebound /% | 61 | 54 | 47 |
| Density (25℃)/(g/cm) | 1.07 | 1.09 | 1.13 |
MDI series prepolymer
| Model | D3560M |
| NCO content / % | 6.0 |
| Viscosity(80℃)/ mpa * s | 1780 |
| D3560M : D3575-C | 100:6.1 |
| Gel time /min | 8-11 |
| Post vulcanization time (100℃)/h | 48 |
| Hardness ( shore A) | 83±3 |
| Tensile strength /MPa | 46 |
| Elongation at break / % | 580 |
| Tear strength (right angle) /(KN/m) | 82 |
| Rebound /% | 38 |
| Density (25℃)/(g/cm) | 1.2 |
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PU Coated Roller Suppliers
Looking for a supplier of high quality PU coating rollers? We are the ideal choice for you! We provide PU coating rollers with excellent abrasion resistance and outstanding corrosion resistance. The precise manufacturing process ensures stable performance of the rolls, which can be used in a wide range of industrial scenarios, providing reliable support for your production.
We custom PU coated rollers, included diameter, length, shaft diameter and length,polyurethane covered thickness, hardness range from 20A to 98 shore A etc. Or produce as according to your design drawing.
We can provide a variety of hardness specifications of PU coating rollers, the hardness range between Shore A[20] - A[98], to meet the needs of different application scenarios, you can tell us the specific purpose, we will recommend the appropriate hardness of the product for you.
There is no strict minimum order quantity for customized PU coating rollers, we will respond positively and provide high quality service even for a small amount of customized needs.
Our PU coating rollers have better abrasion resistance, chemical resistance and elasticity, which can effectively reduce the wear and tear in the operation of the equipment, prolong the service life of the equipment and improve the production efficiency.
Generally speaking, our PU coating rollers can work stably under the ambient temperature of [-20]℃ - [80]℃, and the special formulated products can be adapted to higher temperatures, which can be customized according to your requirements.
The design cycle of customized PU coating roller is usually in [10] - [15] working days, the specific time will depend on the complexity of the product, we will communicate with you as soon as possible to confirm the design.