Description
Technical Parameters
eptfe water vapor permeable membrane for textiles
Huzhou Kaili's expanded Polytetrafluoroethylene (ePTFE) membranes are the core component of high-performance functional fabrics. Designed with a unique microporous structure, these membranes provide an impenetrable barrier against liquid water and wind while allowing body heat and perspiration vapor to escape freely.
Key Specifications
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Key Performance Characteristics
- High Breathability (WVT): Our membranes feature over 9 billion microscopic pores per square inch. Each pore is 700 times larger than a water vapor molecule, ensuring rapid moisture transport during high-activity use.
- Extreme Waterproofing: While vapor can pass through, the pores are 20,000 times smaller than a drop of liquid water, making the membrane completely waterproof even under high pressure.
- Windproof Insulation: The complex, multi-directional fibrous structure creates a "tortuous path" that breaks up wind currents, preventing convective heat loss.
- Thermal Stability: As a fluoropolymer-based material, it remains flexible and functional in temperatures ranging from -190°C to +260°C, far exceeding the limits of TPU or PU films.
- Durability & Chemical Resistance: Naturally resistant to UV degradation, oils, and common industrial chemicals, ensuring a long lifecycle for the finished garment.
Contact Us for Technical Support
Need a sample for testing or a specific lamination weight? Our team in Zhejiang is ready to provide a custom solution for your textile line.
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