TPU Waterproof Breathable Membrane
TPU Membrane Properties & Applications
TPU (Thermoplastic Polyurethane) waterproof breathable membrane is a flexible and eco-friendly material designed for applications requiring both waterproof protection and air permeability. It is widely used in footwear, outdoor apparel and lightweight waterproof products.
Breathability & Water-Pressure Capability
| Tier | Breathability (ml/min @ Ø10 mm, 7 kPa) | Water pressure | Typical application |
|---|---|---|---|
| Low breathability (high waterproof) | 200–1,000 | 50–30 m | Deep-water / harsh waterproof; custom per spec |
| Mid (balanced) | 1,000–5,000 | 30–2 m | Automotive / general outdoor; custom per spec |
| High breathability | 5,000–12,000 | 10–1 m | High heat dissipation / low waterproof need; custom per spec |
Mimoyin does not sell fixed catalog SKUs. For each project we match the membrane material to your drawing and required breathability, acoustic loss, and water pressure, then produce samples for your validation testing.
Product Overview
TPU membrane provides a balanced performance between waterproof protection and breathability. Its elastic structure makes it suitable for dynamic applications that require flexibility and comfort under movement or bending conditions.
Core Advantages
- Excellent flexibility and elasticity for dynamic applications
- Good waterproof and breathable balance for daily protection
- Eco-friendly and recyclable thermoplastic material
- Stable performance under low and high temperature conditions
- Suitable for high-volume mass production applications
Main Applications
- Waterproof shoes and hiking boots
- Outdoor jackets and sportswear
- Rainwear and protective garments
- Light industrial waterproof products
- Consumer outdoor equipment
Related Solution
Explore our waterproof breathable membrane system for full comparison between TPU, ePTFE and PU materials.
Order Information
Frequently Asked Questions
What is the difference between TPU and ePTFE membrane?
TPU is an elastomeric film that transports moisture through hydrophilic diffusion, while ePTFE uses a microporous structure. TPU is more flexible and lower-cost; ePTFE offers higher temperature resistance (260°C vs 80°C) and better chemical inertness.
Can TPU membrane achieve IP68?
Standard TPU membranes are rated IP65–IP67. For IP68 applications (continuous immersion), we recommend ePTFE membrane. However, custom TPU formulations with thicker films can approach IP68 under specific conditions.
Is TPU membrane recyclable?
Yes. Unlike cross-linked polymers, TPU is a thermoplastic — it can be re-melted and reprocessed. This makes it an eco-friendly choice for sustainability-conscious brands.
What adhesive options are available?
Standard option is acrylic PSA (pressure-sensitive adhesive) for easy peel-and-stick installation. Custom options include silicone adhesive, epoxy, or heat-bonding for direct lamination to textiles or plastics.
Can TPU membrane be ultrasonic welded?
Yes. TPU is thermoplastic and can be ultrasonic-welded, heat-sealed, or thermally laminated. This is a key advantage over ePTFE, which cannot be welded and requires adhesive bonding.
What is the typical service life of TPU membrane?
In normal operating conditions (-30°C to +80°C, no strong chemical exposure), TPU membrane maintains performance for 5–8 years. UV exposure may cause gradual yellowing but does not significantly affect waterproof/breathable performance within this period.
- MOQ: 1000 pcs
- Sample Lead Time: 3–5 working days
- Mass Production Lead Time: 7–15 working days
Related guide: See the complete Waterproof Breathable Membrane overview for material comparisons, selection criteria, and application design.