Breathable ePTFE barrier for ostomy bags
Huzhou Kaili New Material Technology Co., Ltd. manufactures specialized ePTFE (expanded Polytetrafluoroethylene) membranes designed specifically for ostomy care applications. The primary challenge in ostomy bag design is balancing the need for effective gas venting (to prevent "ballooning") with an absolute barrier against liquid leakage and odor transmission.
Our ePTFE barrier films provide a high-performance, microporous solution that ensures patient comfort, discretion, and safety.
| Feature | Medical Requirement | Huzhou Kaili Specification |
| Airflow Rate | Consistent Venting | 100 – 1500 ml/min/cm² @ 7kPa |
| Water Entry Pressure | Leak Prevention | > 100 kPa |
| Oil Repellency | Contaminant Resistance | Grade 6 – 8 (Oleophobic Grade) |
| Thickness | Low Profile | 10μm – 50μm |
| Biocompatibility | Skin Safety | USP Class VI / ISO 10993 Compliant |
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Key Performance Benefits for Ostomy Care
- Efficient Flatus Venting: The 3D microporous structure allows for a high rate of gas diffusion, equalizing internal pressure and preventing the bag from inflating or bursting.
- Hydrophobic Liquid Barrier: Naturally repels water and biological fluids. Even under pressure, the membrane prevents liquid breakthrough, ensuring the external clothing remains dry and clean.
- Integrated Odor Control: Our membranes are engineered to be used in conjunction with activated carbon filters. The ePTFE layer protects the carbon from becoming "wet out" by liquids, which would otherwise neutralize its odor-absorbing capabilities.
- Oleophobic Options: Available with specialized oleophobic coatings (Oil Rating 6–8) to resist low-surface-tension fluids, ensuring the vent remains breathable even if it comes into contact with oily waste.
- Soft & Silent Construction: Optimized for medical-grade lamination, our ePTFE films are thin and flexible, contributing to a "low-noise" bag that preserves patient privacy during movement.
Request a Technical Sample for R&D
Are you developing a next-generation ostomy pouch or looking to improve the venting efficiency of an existing design? Our engineering team in China is ready to provide custom pore sizes and airflow specifications for your validation testing.
Contact us today for a factory-direct quote and technical consultation.
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