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مرشحات الهواء والترشيح الكيميائي
ePTFE غشاء HEPA تصفية وسائل الإعلام
A microporous expanded-PTFE membrane laminated to a stable support web for clean, chemically resistant HEPA and ULPA filter conversion.
- Microporous ePTFE Layer
- انخفاض الألياف الصرف
- Chemical Resistance
- High-Cleanliness Laminate
مقدمة المنتج
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.
الخصائص الرئيسية
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.
مخاوف المنتج للعملاء
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.
تطبيقات نموذجية
Semiconductor cleanroom filtrationPharmaceutical terminal HEPA filtersBattery manufacturing dry roomsCorrosive process airLow-shedding clean equipment
المعلمات الفنية
Typical physical ranges for an ePTFE membrane air-filter laminate are listed below.
| المواد الأساسية | Microporous expanded PTFE membrane laminated to spunbond polyester or polypropylene support |
|---|---|
| سمك اللوحة | 0.15–0.45 mm total laminate thickness |
| العرض الفعال | 500–1500 mm usable roll width |
| الحد الأقصى الطول | Up to 50000 mm roll length depending on laminate basis weight |
| الصلب يواجه سمك | 0.20–0.40 mm stainless-steel support screen when the laminate is assembled into a protected HEPA pack |
| الكثافة الأساسية | 120–350 kg/m³ apparent laminate density |
| الموصلية الحرارية | 0.04–0.08 W/(m·K) through the porous laminate |
| إنهاء السطح | Smooth white hydrophobic ePTFE membrane face on a clean support web |
| نوع المشترك | Thermal or adhesive laminate supplied in rolls for mini-pleating and pack edge sealing |
| التخصيص | متوفر على أساس التطبيق المقصود وبيئة التشغيل. |
الخيارات المتاحة
Polyester or polypropylene backingHEPA and ULPA retention gradesDifferent basis weightsCustom roll widths and winding direction
Planning a ePTFE Membrane HEPA Filter Media specification?
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