PTFE Membrane
Product Features
1. Chemical inertness
Unaffected by virtually all liquids, including organic solvents, concentrated acids, alkalis, propellants, and cryogenic fluids.
2. Wide temperature stability
Service temperature range -100°C to +260°C; special grades up to -268°C to +300°C.
3. Hydrophobicity
Naturally hydrophobic, suitable for gas filtration, venting, and aeration applications; hydrophilic modified grades available for aqueous phase filtration.
4. Low surface energy
Non-stick surface with low coefficient of friction, anti-fouling, easy to clean.
5. Pore size range
0.05 μm to 10 μm, with precision grades available.
6. Biocompatibility
Inert, non-toxic, compliant with USP Class VI and FDA food contact regulations
7. Thickness & support structure
Available as unsupported pure film or with support layers (PP/PE); thickness range from 0.05 mm to several millimeters
Product Specifications


Application
Advantages
1. Chemical universal
Resistant to virtually all chemicals (acids/alkalis/solvents/oxidizers); single material covers the majority of corrosive service conditions.
2. Extreme temperature adaptability
Continuous use from -100°C to +260°C, suitable for wide temperature range applications from low to high temperatures.
3. Hydrophobic and hydrophilic options
Naturally hydrophobic for gas and organic phase filtration; hydrophilic modified grades for aqueous phase processing.
4. High precision customizable
Pore sizes from 0.05 μm to 10 μm, covering full spectrum from microfiltration to sterilizing-grade filtration.
5. Biosafety certified
USP Class VI, FDA 21 CFR compliant, suitable for medical and food contact applications.
6. Flexible construction
Unsupported film / supported composite membrane / custom-molded profiles; thickness and dimensions customizable
Manufacturing Standards

FAQ
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1. What is the difference between hydrophobic and hydrophilic PTFE membranes?
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2. What is the maximum operating temperature of PTFE membrane?
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3. Can PTFE membrane be sterilized?
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4. What common failure issues are seen in PTFE membrane applications?
Common quality issues with PTFE films include surface defects (cracks, patterns, roughness, white spots), dimensional deviation, warping, and low breakdown voltage. Surface fuzzing (filamentous protrusions, fibrous burrs) often stems from poor raw material quality, improper molding process parameters, or post-processing damage (blunt slitting blades, excessive winding tension). These can be effectively mitigated by selecting high-quality resin, optimizing sintering parameters, and standardizing handling procedures.
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