In modern automotive industry, the reliability of the filtration system directly affects the performance and service life of the entire vehicle. As the "first line of defense" between the engine and the air inside the vehicle, the quality of automotive filters depends on multiple key factors, among which the most crucial one is the selection of raw materials.
As a professional manufacturer of automotive filters, Dongsen Auto Parts Co., Ltd. has always adhered to strict material control standards. The following will systematically analyze the selection principles of key raw materials from three aspects: air filters, air conditioning filters, and oil filters.
Air filters are responsible for filtering dust and particles in the air. Their raw materials need to have excellent filtering performance and structural stability.
Air filter core filter paper is usually made of wood pulp fiber paper, synthetic fiber paper or nanofiber materials.
The material selection criteria include:
High filtration efficiency (up to over 99%)
Excellent moisture resistance and tensile strength
Strong folding stability
It can withstand the relatively high temperature inside the engine compartment
Sealing materials and frames
The sealing performance of the air filter element determines the filtration effect. Common materials include:
PU foam material
PP, PVC, rubber frame
The materials must ensure reliable sealing, high temperature resistance and corrosion resistance to prevent unfiltered air from bypassing the engine.
Metal support mesh
The internal support structure of the filter element mostly adopts galvanized steel mesh, electrophoretic black mesh or stainless steel mesh.
The key point lies in:
Provide sufficient support strength
Ensure smooth airflow
It does not rust or deform even after long-term use
Selection criteria for raw materials of air conditioning filters
The air conditioning filter is directly related to the air quality inside the vehicle, so the requirements for material performance are more stringent.
Multi-layer non-woven fabric
Primary filter layer: Blocks larger particles
Meltblown fabric layer: Filters fine particles such as PM2.5
Activated carbon layer (optional) : Adsorbs odors and harmful gases
The meltblown material selected by ETTV has high electrostatic adsorption performance, and the activated carbon layer is strictly screened based on iodine value to ensure good adsorption effect.
Coconut shell activated carbon: Strong adsorption capacity, environmentally friendly and safe
Coal-based activated carbon: High cost performance
The company provides different activated carbon solutions based on customer demands and market positioning.
Frame and supporting materials
To ensure that the filter element does not collapse over a long period of time, ETSEN uses a highly stable PP frame and steel wire support structure to guarantee that the product maintains its shape even in high humidity and high-temperature environments.
To ensure product quality, the company conducts strict testing on all raw materials, including:
Filtration efficiency test
Resistance test
Strength and durability tests
High-temperature and environmental simulation testing
Only materials that have passed the inspection can enter the production process
Dongsen Auto Parts Co., Ltd. has always adhered to the concept of "materials as the root and quality as the foundation", strictly controlling every material screening and testing link to ensure that every product leaving the factory can meet high standards of filtration effect and service life.
Qinghe County Dongsen Auto Parts Co., Ltd. is located in Qinghe County, Xingtai City, Hebei Province. It was established in 2024. Although the company was established a short time ago, it has more than 10 years of production experience. We are a manufacturer specializing in the production of air filters, air conditioning filters and oil filters. The filters produced by our factory serve the domestic and foreign markets and have won unanimous praise from customers in Southeast Asia, Africa, South America and other regions.
