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Воздушные фильтры и химическая фильтрация
ePTFE Membrane HEPA Filter Media
A microporous expanded-PTFE membrane laminated to a stable support web for clean, chemically resistant HEPA and ULPA filter conversion.
- Microporous ePTFE Layer
- Low Fibre Shedding
- Chemical Resistance
- High-Cleanliness Laminate
Введение продукции
The media combines a thin expanded-polytetrafluoroethylene membrane with a stronger nonwoven or synthetic support. The ePTFE node-and-fibril structure provides fine particle retention at the surface, while the carrier protects the membrane through pleating and pack assembly. The laminate is naturally hydrophobic and resistant to many chemicals, making it attractive for sensitive microelectronics, pharmaceutical and aggressive-air applications. Finished performance is established after the media is pleated and sealed into a complete filter.
Основные характеристики
Hydrophobic ePTFE resists moisture penetration during normal service.
The support layer provides tensile strength for pleating and conversion.
Broad chemical resistance suits selected corrosive process environments.
Обеспокоенность клиентов продуктами
Ultra-clean processes need high particle retention without glass-fibre shedding or moisture sensitivity.
Glass-fibre fragments are undesirable near sensitive products.An ePTFE surface layer provides particle capture without an exposed microglass face.
Condensation changes the resistance of a hydrophilic medium.The hydrophobic membrane limits wetting by liquid water droplets.
The thin membrane tears during pleating.A bonded support web carries handling loads through conversion and pack assembly.
Aggressive process vapours degrade ordinary fibre binders.PTFE chemistry offers broad resistance to many acids, bases and solvents.
Типичные приложения
Semiconductor cleanroom filtrationPharmaceutical terminal HEPA filtersBattery manufacturing dry roomsCorrosive process airLow-shedding clean equipment
Технические параметры
Typical physical ranges for an ePTFE membrane air-filter laminate are listed below.
| Основной материал | Microporous expanded PTFE membrane laminated to spunbond polyester or polypropylene support |
|---|---|
| Толщина панели | 0.15–0.45 mm total laminate thickness |
| эффективная ширина | 500–1500 mm usable roll width |
| Максимальная длина | Up to 50000 mm roll length depending on laminate basis weight |
| Толщина линий стали | 0.20–0.40 mm stainless-steel support screen when the laminate is assembled into a protected HEPA pack |
| Плотность ядра | 120–350 kg/m³ apparent laminate density |
| Теплопроводимость | 0.04–0.08 W/(m·K) through the porous laminate |
| Поверхностная отделка | Smooth white hydrophobic ePTFE membrane face on a clean support web |
| Объединенный тип | Thermal or adhesive laminate supplied in rolls for mini-pleating and pack edge sealing |
| Customization | Доступно в зависимости от предполагаемого применения и операционной среды. |
Доступные варианты
Polyester or polypropylene backingHEPA and ULPA retention gradesDifferent basis weightsCustom roll widths and winding direction
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