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Filtres à air et filtration chimique
ePTFE Membrane HEPA Media Filtre
A microporous expanded-PTFE membrane laminated to a stable support web for clean, chemically resistant HEPA and ULPA filter conversion.
- Microporous ePTFE Layer
- Faible fibre Shedding
- Chemical Resistance
- High-Cleanliness Laminate
Introduction de produit
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.
Key Features
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.
Préoccupations du client produit
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.
Les applications typiques
Semiconductor cleanroom filtrationPharmaceutical terminal HEPA filtersBattery manufacturing dry roomsCorrosive process airLow-shedding clean equipment
Paramètres techniques
Typical physical ranges for an ePTFE membrane air-filter laminate are listed below.
| Matériaux de base | Microporous expanded PTFE membrane laminated to spunbond polyester or polypropylene support |
|---|---|
| Panneau épaisseur | 0.15–0.45 mm total laminate thickness |
| Largeur effective | 500–1500 mm usable roll width |
| Longueur maximale | Up to 50000 mm roll length depending on laminate basis weight |
| Acier face épaisseur | 0.20–0.40 mm stainless-steel support screen when the laminate is assembled into a protected HEPA pack |
| Densité Core | 120–350 kg/m³ apparent laminate density |
| Conductivité thermique | 0.04–0.08 W/(m·K) through the porous laminate |
| surface finie | Smooth white hydrophobic ePTFE membrane face on a clean support web |
| Type joint | Thermal or adhesive laminate supplied in rolls for mini-pleating and pack edge sealing |
| Customisation | Disponible en fonction de l'application prévue et de l'environnement d'exploitation. |
Options disponibles
Polyester or polypropylene backingHEPA and ULPA retention gradesDifferent basis weightsCustom roll widths and winding direction
Planning a ePTFE Membrane HEPA Filter Media specification?
Envoyez-nous vos dimensions, conditions d'installation, objectifs de performance et finition de surface requise.
