China H13 HEPA Air Filter EN1822 Mini-Pleated Design from Reliable Suppliers & Factory with High Efficiency Performance
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
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.
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.
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.
Wind Speed Relationship Diagram
Product Parameters
📝 Remarks: (1) Initial resistance tolerance of ±10% (2) Support customer size
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 ultra-fine glass fiber media folded into tight pleats held in shape by hot melt adhesive beads instead of metal separators. This design achieves the same H13 filtration efficiency (≥99.95% for 0.3 µm particles per EN 1822) in a more compact and lighter unit, making it ideal for space-constrained cleanroom and medical installations.
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What filtration efficiency does the EN1822 H13 HEPA filter provide?
According to the EN 1822 standard, an H13 HEPA filter achieves a minimum overall efficiency of 99.95% (and minimum local efficiency of 99.75%) for the most penetrating particle size, typically around 0.1–0.3 micrometers. The full range of available high-efficiency filters can reach up to 99.999999% depending on grade selection.
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Which industries and environments are best suited for Mini-Pleated H13 HEPA filters?
These filters are widely used in semiconductor and LCD cleanrooms, pharmaceutical sterile production lines, hospital operating rooms and sterile wards, aseptic food and beverage filling facilities, and high-precision aerospace research labs — any environment where superior particulate control and compact filter size are critical requirements.
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What frame materials are available, and how do I choose the right one?
Three main frame materials are offered: Galvanized Steel for general-purpose use with the best cost-to-strength ratio; Aluminum Extrusion for lightweight applications or environments with mild corrosion concerns; and Stainless Steel for high-hygiene or highly corrosive environments such as pharmaceutical manufacturing and food processing facilities. Choose based on your operating environment and budget.
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How do hot melt adhesive beads affect the performance of Mini-Pleated HEPA filters?
Hot melt adhesive beads replace traditional aluminum separators to maintain the pleat spacing, forming stable V-shaped air channels through the filter media. Their shape, spacing, and uniformity are critical: poorly applied beads can collapse pleats, increase airflow resistance, reduce dust-holding capacity, and compromise filter structural integrity. Consistent bead application is therefore a key quality control factor in manufacturing.
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Can the Mini-Pleated H13 HEPA filter be made in custom sizes, and what is the initial resistance tolerance?
Yes, custom sizes are supported to meet specific installation and housing requirements. The initial resistance tolerance is ±10% of the rated value. It is recommended to consult with the manufacturer and provide your required dimensions, airflow rate, and operating conditions to ensure the correct filter specification is selected for your application.