PU Belt
Our Polyurethane (PU) Round Belts (also known as TPU belts) are engineered from premium-grade thermoplastic polyurethane, combining high tensile strength with exceptional flexibility. Designed for both power transmission and conveying applications, these belts are the “go-to” solution for industries requiring low-maintenance and long-lasting performance.
Whether you need a belt for high-speed packaging lines or heavy-duty ceramic production, our belts provide a reliable, slip-resistant grip and can be easily joined on-site using simple welding tools.
High Tensile Strength: Superior load-bearing capacity for demanding applications.
• Easy Heat-Welding: On-site joining in minutes—minimize equipment downtime.
• Oil & Chemical Resistance: Perfect for harsh industrial environments.
• Customizable: Available in various diameters (2mm-20mm), colors, and shore hardness.
Polyurethane Round Belt
Technical Data Table：
• Material: Thermoplastic Polyurethane (TPU)
• Hardness: 85A / 90A Shore A
• Surface: Smooth (Orange/Clear) or Rough (Green)
• Temperature Range: -35°C to +80°C
• Diameter Range: 2mm to 20mm (Customizable)
PU Belting
Industry Applications：
Packaging Machinery: Vertical and horizontal wrapping.
• Food Processing: Fruit and vegetable sorting, meat conveying.
• Ceramics & Tile Industry: Heavy-duty transport lines.
• Textile Industry: Yarn processing and winding machines.
• Printing & Paper: High-speed folder gluer belts.
Why Choose Us：
Consistent Quality: Strict quality control system.
• Rapid Prototyping: Small batch samples for testing available within 3-5 days.
• Global Export Experience: Familiar with international shipping standards and packaging to ensure the belts arrive in perfect condition.
• Cost-Effective: Factory-direct pricing with premium durability.
FAQ Section:
Q: How do I join PU round belts?
• A: They can be easily heat-welded using a specialized hot melt tool kit. We also provide a welding guide upon request.
• Q: Can you provide reinforced PU round belts?
• A: Yes, we offer reinforced versions with Polyester or Kevlar cords to prevent stretching in long-distance conveying.
• Q: What is the lead time for bulk orders?
• A: Typically 3-10 days depending on the quantity and customization requirements.
• Q: Can you provide product size customization?
• A: Yes, we can provide size customization.
• Q: Can the belt be printed with my own mark?
• A: Yes.
How to weld polyurethane round belt?
A common and stable method for connecting a polyurethane round belt is high-temperature hot-melt bonding. The two ends of the strip are heated to their melting point, then quickly butt-jointed and pressurized to bond them. The specific steps are as follows:
1. Prepare tools and materials: Prepare the round or pentagonal belt to be connected, and a three-piece connector tool kit (connector clamp, soldering iron, scissors).
2. Measure and cut: Measure the required length of the PU round belt or PU pentagonal belt to be connected, and use scissors to cut both ends of the strip flat.
Note: The end faces must be perpendicular and flat; otherwise, the welding strength will be affected.
3. Fix and align: Fix the cut PU round belt or PU pentagonal belt to the connector clamp. First, lock one side, then adjust the other side by moving it. After alignment, tighten the clamp.
4. Hot-melt welding: Use a soldering iron (preheat for 8-10 minutes beforehand). Place the preheated soldering iron at the joints at both ends for hot-melt welding.
5. Pressurization and cooling: After hot-melt welding, tighten the connector clamp and maintain pressure for approximately 2-3 minutes. 6. Inspection and Polishing: Remove the belt and inspect the welded joint. After confirming good weld quality, proceed to the final step: use tools to smooth and polish the excess material at the joint, making the interface smooth and even.
Important Notes:
• Temperature Control: The recommended welding temperature is generally around 250℃. Too low a temperature will result in weak adhesion, while too high a temperature may damage the material properties.
• Alignment: Alignment is crucial. If the joint is misaligned, the belt is prone to jumping or breaking during operation.
PU Belt welding machine :
