Classification and application of polytetrafluoroethylene film

I. Classification

1. ePTFE Membrane

   • Expanded PTFE membrane, formed by stretching to create a unique three-dimensional network structure. Features high porosity and filtration efficiency.

2. PTFE Clothing Membrane

   • Thin, flexible, and lightweight. Primarily used in outdoor apparel, protective clothing, etc., to provide windproof, waterproof, and breathable functions.

3. PTFE Architectural Membrane

   • High-strength materials (e.g., Type G membranes) with excellent optical properties (light transmission, thermal insulation). Commonly applied in large-scale stadiums, exhibition halls, and roof membrane structures.

4. PTFE Filtration Membrane

   • High-performance separation membranes in chemical and environmental industries. Exhibits exceptional resistance to acids, alkalis, and organic solvents.

5. Medical-Grade PTFE Membrane

   • Non-toxic and biocompatible. Used in medical devices such as artificial blood vessels, tissue repair materials, and surgical products.

Additional subdivisions: Air purification membranes, textile membranes, electronic-grade membranes, etc.

II. Applications

1. ePTFE Membrane

   • Air purifiers, medical respirators, semiconductor cleanroom equipment, waterproof-breathable layers in outdoor sportswear.

2. PTFE Clothing Membrane

   • Outdoor gear and military apparel for weather protection while maintaining breathability and comfort.

3. PTFE Architectural Membrane

   • Transparent roofing for large-span structures (stadiums, greenhouses, airport terminals), offering shading, energy efficiency, and aesthetic appeal.

4. PTFE Filtration Membrane

   • Precision filtration in industrial corrosive fluid/gas treatment and water purification.

5. Medical-Grade PTFE Membrane

   • Implantable devices (artificial blood vessels, heart valves), surgical sutures, and drug delivery systems, leveraging biocompatibility and functionality.

Other industrial uses:

• Filtration of flue gases in chemical, steel, metallurgy, carbon black, power generation, cement, and waste incineration industries.
• Unique microporous structure (pore size: 0.2–15 μm, porosity ≥85%) ensures ultra-high filtration efficiency (99.99%), achieving near-zero emissions.