eptfe membrane in functional clothing textiles
Huzhou Kaili's ePTFE (expanded Polytetrafluoroethylene) membranes are the definitive choice for the functional layer of high-performance textiles. Our membranes are engineered to act as a selective barrier: they are 100% windproof and waterproof to external elements, yet feature a high-density microporous structure that allows internal perspiration vapor to escape instantly.
From our 3,000m² facility in the Yangtze River Delta fluoromaterial cluster, we supply the specialized membranes that power elite-tier outdoor, tactical, and protective clothing systems.
| Performance Metric | Test Method | Value / Specification |
| Waterproof Rating | ISO 811 | 15,000mm – 30,000mm H₂O |
| Breathability (Ret) | ISO 11092 | < 6 (Extremely Breathable) |
| Moisture Vapor (MVTR) | ASTM E96 BW | 10,000 – 20,000 g/m²/24h |
| Thickness | Micrometer | 10μm – 35μm (Customizable) |
| Peel Strength | ISO 2411 | > 5.0 N/5cm (Depends on substrate) |
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Core Functional Capabilities
- Engineered Microporosity: Our expansion process creates billions of pores per square inch. Each pore is 700 times larger than a water vapor molecule but 20,000 times smaller than a liquid water droplet. This ensures the wearer stays dry from the inside out.
- 100% Windproof Protection: The multi-directional nodal structure of the ePTFE film shatters wind currents, preventing "wind chill" and keeping the body's micro-climate stable in high-altitude or high-speed environments.
- Exceptional Thermal Stability: As a high-performance fluoropolymer, our membrane remains soft and flexible in temperatures as low as -190°C and maintains its structural integrity up to +260°C, far outperforming TPU or PU coatings.
- Enhanced Chemical Resistance: Naturally resistant to body oils, salts, and detergents, our membranes are available with oleophobic finishes to ensure long-term breathability through hundreds of industrial wash cycles.
- High-Energy Lamination Surface: We treat our ePTFE films to ensure superior bonding with various face fabrics, achieving high peel strength and preventing delamination in high-stress areas like seams and joints.
Targeted Applications in Functional Textiles
- Elite Mountaineering & Hardshells: The core of 3-layer (3L) fabric systems designed for extended exposure to extreme alpine conditions.
- Tactical & Military Uniforms: Providing a liquid-proof and windproof barrier while meeting NIR (Near-Infrared) reflectance and low-noise requirements.
- Professional Workwear: Durable lamination for high-visibility and safety garments that require high-pressure water resistance and breathability.
- Athletic & Activewear: Lightweight, high-MVTR membranes for 2-layer and 2.5-layer shells that prioritize packability and thermoregulation.
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Our Factory
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