Three-quarter view of ePTFE membrane ULPA filter for semiconductor cleanrooms

Filter udara dan filtrasi kimia

Filter ULPA Membran ePTFE

An ultra-clean ePTFE membrane panel offering U15 or U16 efficiency options, low pressure drop and reduced ionic or fibre emissions for semiconductor processes.

U15–U16 ePTFE Media
Boron-Free Filtration Layer
Low Pressure Drop
Low-Outgassing Construction

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Perkenalan produk

The ePTFE membrane ULPA filter uses an expanded-polytetrafluoroethylene membrane laminated to a stable support and formed into closely controlled mini-pleats. The non-borosilicate filtration layer reduces fibre shedding and avoids boron from conventional glass media, while the thin membrane structure can deliver lower resistance at ultra-high efficiency. Low-outgassing separators and polyurethane potting secure the pack in an anodized-aluminium frame. Gel, gasket or knife-edge versions integrate with semiconductor cleanroom ceilings, fan filter units and process-tool mini-environments.

Fitur utama:

Expanded PTFE membrane supports U15 or U16 configurations without an exposed borosilicate fibre surface.

The thin membrane layer provides a favorable pressure-drop profile for high-recirculation cleanroom systems.

Hydrophobic media resists brief moisture exposure and many routine cleanroom decontamination chemicals.

Low-outgassing pack supports, potting and frame materials limit avoidable molecular emissions near process tools.

Kekhawatiran produk pelanggan

Ultra-clean semiconductor processes need U-class particle control without adding boron, fibres or excessive recirculation-fan resistance.

Borosilicate media contributes unwanted ionic material near a sensitive process.The ePTFE filtration layer avoids conventional glass-fibre media in the active capture surface.

U-class efficiency consumes too much pressure in a continuously recirculated cleanroom.The high-porosity membrane and optimized pleat area reduce resistance at the selected face velocity.

Fibres released from the downstream face affect optics or wafer surfaces.A supported non-fibrous membrane presents a clean downstream filtration surface.

Filter construction materials add VOCs to a low-outgassing process environment.Selected separators, potting and frame components minimize avoidable material emissions.

Aplikasi yang Tipis

Advanced semiconductor fabricationPhotolithography process baysOLED and flat-panel manufacturingPrecision optics assemblyLow-outgassing equipment mini-environments

Parameter teknis

Representative construction ranges for ePTFE membrane ULPA panels are shown below.

Bahan inti	Supported expanded-PTFE membrane ULPA media with low-outgassing polymer separators
Ketebalan Panel (Panel Thickness)	65–150 mm overall aluminium-frame depth
Efektif lebar	305–610 mm nominal face width
Panjang maksimum	Up to 1220 mm nominal face length
Baja menghadap ketebalan	0.4–0.6 mm low-shedding stainless-steel or coated protective grid
Kepadatan inti (core density)	Approximately 20–35 kg/m³ equivalent ePTFE membrane-pack density
Konduktivitas Termal (Thermal Conductivity)	Approximately 0.030–0.040 W/(m·K) for the dry supported membrane pack
Permukaan selesai	Clean natural-anodized aluminium with semiconductor-grade low-shedding faceguards
Jenis Bersama	Polyurethane gel, closed-cell gasket or extruded knife-edge perimeter seal
Customization (Kustomisasi)	Tersedia berdasarkan aplikasi yang dimaksudkan dan lingkungan operasi.

Pilihan yang tersedia

U15 or U16 membrane efficiency65 mm, 90 mm or 150 mm frame depthGel, gasket or knife-edge sealLow-outgassing semiconductor component package

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