TPU Elastic Non-Woven Material: Properties and Characteristics
Understanding TPU elastic non-woven material — chemistry, structure, and performance attributes
TPU elastic non-woven is a unique material combining the elasticity of thermoplastic polyurethane with the structure of non-woven fabric. TPU elastic non-woven material properties differ significantly from traditional non-wovens like PP or PET.
Here's a technical overview of what makes this material special.
TPU Chemistry Basics
Thermoplastic polyurethane (TPU) is a block copolymer with two distinct segments:
- Hard segments: Provide strength, modulus, and heat resistance — typically aromatic or aliphatic diisocyanates
- Soft segments: Provide elasticity and flexibility — typically polyester or polyether polyols
The ratio of hard to soft segments determines TPU properties. More hard segment = higher strength and modulus. More soft segment = greater elasticity and lower hardness.
Ester vs. Ether TPU
| Property | Ester-based TPU | Ether-based TPU |
|---|---|---|
| Mechanical strength | Higher | Lower |
| Abrasion resistance | Excellent | Good |
| Hydrolytic stability | Poor (susceptible to moisture) | Excellent |
| Low temperature flexibility | Good | Excellent |
| Microbial resistance | Poor | Good |
| Cost | Lower | Higher |
For most non-woven applications, ether-based TPU is preferred due to better hydrolytic stability — especially important for hygiene and medical products.
Non-Woven Structure Types
Melt-blown: TPU is extruded through fine nozzles and attenuated with hot air. Creates fine fibers (1-10 microns) with high surface area. Good for filtration and barrier applications.
Spunbond: TPU is extruded and drawn into continuous filaments. Creates stronger, coarser fibers (10-50 microns). Good for strength and durability.
SMS (Spunbond-Meltblown-Spunbond): Composite structure combining strength (spunbond outer layers) with barrier (melt-blown middle layer).
Key advantage: Unlike PP or PET non-wovens, TPU non-woven retains elasticity even in fiber form. The material can stretch 200-500% and recover — properties that carry through to the final fabric.
Key Material Properties
- Density: 1.1-1.25 g/cm³ (depending on formulation)
- Shore hardness: 70A-75D (adjustable via formulation)
- Tensile strength: 20-60 MPa
- Elongation at break: 300-800%
- Service temperature: -40°C to +120°C (ether-based)
Contact our technical team to discuss TPU material selection for your application. We can recommend the right TPU grade and non-woven structure for your requirements.
Request TPU Material Samples and Technical Data
Ester and ether grades available — find the right material for your application
View Product Range Request Samples
