プレフィルター

Primary air filter media is designed for the initial stage of air filtration, where it captures larger airborne particles such as dust, lint, and other coarse contaminants. It is commonly used as a pre-filter to protect downstream filtration components, including medium-efficiency and HEPA filters, from excessive dust accumulation and help extend their service life.
Depending on the application, primary filter media can be manufactured from synthetic fibers, fiberglass, or other suitable filtration materials. Different fiber structures and densities can be selected to meet specific requirements for particle capture, airflow, and filtration efficiency.
With its low air resistance, cost-effective performance, and versatile material options, primary filter media is suitable for general ventilation and air conditioning applications. It provides an economical solution for preliminary air filtration in systems that require basic dust removal and equipment protection.
The filtration process mainly relies on the fiber network and pore structure to capture larger particles through mechanisms such as interception and impaction. For electrostatically treated materials, electrostatic attraction can provide additional particle capture capability. The actual filtration efficiency and pressure drop depend on the material composition, fiber structure, and operating airflow.
Primary filter media is widely used in HVAC systems, commercial buildings, industrial facilities, fresh air ventilation units, and air handling equipment. It can be customized in terms of material type, thickness, basis weight, dimensions, and roll or sheet format to meet different filtration system requirements.