China Mini-Pleated H13 HEPA Air Filter Suppliers | EN1822 Certified Factory Quality
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Application Area
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Electronics Industry
Semiconductor clean rooms, LCD panel production lines, precision instrument assembly rooms (often as final filters)
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Pharmaceutical & Bioengineering
Sterile drug production areas, vaccine production lines, laboratories, animal facilities
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Healthcare
Hospital operating rooms, sterile wards, leukemia treatment rooms
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Food & Beverage
Aseptic filling rooms
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High-Requirement Research Institutions
Precision instrument rooms, aerospace clean rooms
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Key Features
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High Efficiency: Extremely high filtration efficiency for particles in the 0.1–0.3 micrometer range (e.g., bacteria, virus carriers, smoke, fine dust). It is a critical final stage for creating a clean environment.
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Low Resistance: Under the same airflow rate, the pleatless design typically offers lower initial resistance due to more efficient media packing, leading to better energy savings.
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High Dust Holding Capacity: The optimized structure and high-quality filter media allow it to hold more dust, thereby extending its service life.
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Compact Size & Light Weight: Compared to separator filters with the same filtration area, they have a more compact profile and are lighter, facilitating easier installation and maintenance.
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Structure Relies on Adhesive Beads: Its structural integrity depends entirely on uniform and precisely applied hot melt adhesive beads, making the manufacturing process highly demanding. These materials should effectively capture dust particles without imposing excessive resistance to airflow. A chaotic network of fibers creates numerous barriers to particles, while the wide spaces between fibers allow air to pass through smoothly. Commonly used materials include glass fiber, synthetic fiber, polypropylene fiber, polyester fiber, and plant fiber. Generally, Mini-pleated HEPA filters use glass fiber.
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The Efficiency of HEPA Filter
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The efficiency of currently available high-efficiency filters ranges from 99.9% to 99.999999%, and they can be selected based on specific requirements. The rational selection of filter efficiency and face velocity contributes to comprehensive economic benefits.
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Structure & Materials
- Filter Media: Typically ultra-fine glass fiber paper. The fibers have an extremely small diameter and are densely packed, capturing particles through various mechanisms like mechanical interception, diffusion, and inertial impact.
- End Sealant: After folding, both ends of the filter media pack are sealed with polyurethane glue to form solid end panels, preventing unfiltered air from bypassing.
- Hot Melt Adhesive Beads: Replace separators. They bond the filter paper at the peaks and valleys of the pleats, forming stable V-shaped channels. The shape, spacing, and uniformity of these beads directly impact the filter's performance and strength.
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Frame — Common materials include:
- Galvanized Steel: Most common, offering high strength and moderate cost.
- Aluminum Extrusion: Lightweight and corrosion-resistant, often used in high-demand environments.
- Stainless Steel: Used in highly corrosive or high-hygiene areas (e.g., food processing).
- Gasket: Installed around the frame perimeter to ensure an airtight seal between the filter and the housing. Common materials include closed-cell neoprene sponge, polyurethane foam, or silicone gaskets.
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Wind Speed Relationship Diagram
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Product Parameters
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Remarks: (1) Initial resistance tolerance of ±10% (2) Support customer size
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Frequently Asked Questions (FAQ)
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What is a Mini-Pleated H13 HEPA Air Filter and how does it differ from a standard HEPA filter?
A Mini-Pleated H13 HEPA Air Filter uses hot melt adhesive beads instead of traditional aluminum separators to maintain pleat spacing. This design results in a more compact, lightweight filter while achieving the same or higher filtration efficiency (H13 grade, ≥99.95% at MPPS). Compared to standard separator-type HEPA filters, mini-pleated versions offer lower resistance, higher dust holding capacity, and easier installation.
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What filtration efficiency does an H13 HEPA filter achieve?
According to the EN1822 standard, an H13 HEPA filter achieves a minimum overall filtration efficiency of 99.95% (or 99.75% per local leak test) for the Most Penetrating Particle Size (MPPS), which is typically in the 0.1–0.3 micrometer range. Available efficiency grades range from 99.9% up to 99.999999% depending on application requirements.
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What industries and environments are Mini-Pleated H13 HEPA filters suitable for?
These filters are widely used in environments that demand extremely clean air, including semiconductor and LCD manufacturing clean rooms, pharmaceutical and bioengineering sterile production areas, hospital operating rooms and sterile wards, aseptic food filling rooms, aerospace facilities, and high-precision research laboratories.
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What frame materials are available for Mini-Pleated H13 HEPA filters?
The filter frame can be manufactured in several materials to suit different environments: Galvanized Steel is the most common option, offering high strength at moderate cost; Aluminum Extrusion provides a lightweight and corrosion-resistant alternative for high-demand environments; and Stainless Steel is used in highly corrosive or strict hygiene settings such as food processing facilities.
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Can Mini-Pleated H13 HEPA filters be customized to specific sizes?
Yes. Custom sizing is supported to meet specific installation requirements. The initial resistance tolerance is ±10%, and both standard and non-standard dimensions can be accommodated. Please refer to the product parameters table or contact our team for detailed specifications and custom order options.
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What is the role of hot melt adhesive beads in a Mini-Pleated HEPA filter?
Hot melt adhesive beads are the core structural element of mini-pleated HEPA filters. They replace traditional aluminum or plastic separators by bonding the filter media at the peaks and valleys of each pleat, forming stable V-shaped airflow channels. The precision, uniformity, and spacing of these beads are critical — they directly determine the filter's mechanical strength, airflow performance, and overall filtration efficiency. The manufacturing process is therefore highly demanding to ensure consistent quality.