Xinxiang Filter

Description:
Separator-type HEPA filters adopt corrugated aluminum foil or paper separators to partition ultra-fine glass fiber media into uniform channels, ensuring consistent pleat spacing and even airflow distribution. The separator structure endows filters with enhanced mechanical strength and rigidity, making them particularly suitable for high wind speed, high air pressure or high-temperature working conditions.

Complying with EN 1822 standard, this filter achieves MPPS particle efficiency of ≥99.95% (H13) to 99.995% (H14) with initial resistance ≤250Pa. Aluminum foil separators feature flame retardancy and thermal conductivity, while paper separators deliver better cost efficiency. They are applicable to large-format printing equipment or scenarios with special structural strength requirements.

Core Technical Advantages:

High mechanical strength & strong deformation resistance: Aluminum foil or paper separators provide rigid support to maintain uniform pleat spacing. The filter stays undeformed and free of pleat collapse under high wind speed and pulsating airflow impact, with collapse resistance over 3 times the rated pressure.

Excellent heat resistance: Aluminum foil separators withstand temperatures up to 200–300°C. Matched with heat-resistant filter media and sealant, they fit high-temperature printing processes such as EBM Electron Beam Melting.

Uniform airflow distribution: Independent channels formed by separators guide vertical airflow through the media, avoiding turbulence and localized high resistance for stable filtration efficiency and extended service life.

Flame retardant safety: Non-combustible aluminum foil separators paired with glass fiber media meet flame retardant safety standards.

Working Condition Matching Table:

Application Fields:

High-Temperature 3D Printing Processes:

Gas circulation filtration for EBM Electron Beam Melting equipment

High-temperature preheating SLM printers (titanium & nickel-based alloys)

Working conditions with chamber temperature over 100℃

Large-format 3D printing equipment

High-Standard Working Conditions:

Scenarios requiring special mechanical strength for filters

High wind speed and pulsating airflow environments

Applications demanding flame retardant certification

Case & Data Verification:

Case: High-Temperature HEPA Filter Application for Equipment End User

An end user manufactures titanium alloy aerospace components with a chamber operating temperature of around 180℃. Adhesive of standard mini-pleat filters softened and failed under high temperature. After switching to aluminum foil separator H13 high-temperature HEPA filters, the filter remained intact after 3000 hours of continuous operation with stable filtration efficiency. The qualified rate of oxygen content in printed parts rose from 85% to 98%.

FAQ

Q1: How to choose between aluminum foil separators and paper separators?
A: Aluminum foil separators withstand 200–300℃, are non-combustible and high-strength, suitable for high-temperature or high-safety scenarios; paper separators feature low cost and light weight for standard ambient-temperature applications.

Q2: Do separator-type filters have higher resistance than mini-pleat filters?
A: Yes. Separators occupy internal space, leading to smaller filtration area under identical overall dimensions and 10–20% higher resistance. They fit scenarios with no strict volume limit but high requirements on strength and heat resistance.

Q3: Can separator-type filters be used for ambient-temperature printers?
A: Yes. However, mini-pleat filters deliver better cost performance if no high-temperature or high-strength requirements exist. Select according to actual working conditions.