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The Jyntrel washable activated carbon sponge filter is a polyurethane foam substrate loaded with activated carbon, designed to capture coarse particles such as hair and dust while adsorbing formaldehyde (HCHO), benzene, ammonia and other odorous gases. It is used as a pre-filter layer in air purifiers, fresh-air ventilation systems, automotive cabin air filters, central air handling return grilles and industrial vacuum cleaners. This filter suits HVAC engineers, appliance OEMs and facility managers who need a low-resistance, shape-flexible odor-removal layer that can be washed and reused.
In a typical installation, the filter sits as the first stage of the air path, upstream of finer filters. Air enters at face velocity determined by the system fan and duct size; the open-cell foam structure allows a high volumetric flow rate at low pressure drop, which helps preserve fan energy and reduces the load on downstream HEPA or carbon stages. Because the sponge is flexible, it can conform to curved or irregular intake geometries without bypass gaps, maintaining contact between the air stream and the carbon-loaded foam. The filter is intended for ambient indoor conditions; it is not specified for high-temperature exhaust streams or for liquid oil separation, and operating limits should be confirmed with Jyntrel for each application.
The low airflow resistance means the filter contributes little to overall system static pressure. In air purifiers and return-air grilles, this characteristic allows the fan to maintain design airflow while the carbon layer continues to adsorb gases. For automotive cabin filters, the material can be die-cut to fit the filter housing and works alongside the existing particulate layer. In all cases, the filter should be installed with the upstream face exposed to the dirty air stream and the downstream face facing the fan or downstream filter, following the equipment manufacturer’s airflow direction.
The filter combines two functions: initial filtration of larger particles and adsorption of harmful gases. The polyurethane foam is loaded with powdered or fine granular activated carbon that has been fixed in place through a special curing process, so the carbon remains distributed through the foam matrix rather than settling or dusting out during handling. This construction supports repeated washing—users can rinse the filter to remove accumulated dust and restore airflow—which reduces consumable cost compared with disposable carbon pads. The material is highly flexible and can be cut or die-cut into almost any outline, making it suitable for irregular spaces where rigid filters cannot fit.
Because the carbon is integrated into an open-cell foam, the filter offers good air permeability and low resistance. The washable design means the filter can be maintained in place rather than replaced after every dust-loading cycle, although carbon adsorption capacity will eventually decline and replacement is still required. Jyntrel can adjust thickness, pore density (PPI) and dimensions to balance efficiency, pressure drop and service life for each device design.
To recommend the right specification, Jyntrel needs the following information: the device or vehicle model and the filter’s installation position; the required outline size or a drawing; the design airflow rate (m³/h) or face velocity; operating conditions such as temperature, humidity and presence of oil mist or coarse dust; and the expected quantity. With these inputs, the team can select foam thickness (for example 3 mm to 50 mm), pore density (PPI), carbon loading and die-cut shape. OEM and ODM customisation is supported, including private-label packaging and logos. Prototype samples are typically available within 5–7 working days after specifications are confirmed.
| Item | Detail |
|---|---|
| Product name | Washable activated carbon sponge filter |
| Core substrate | Polyurethane foam |
| Adsorbent | Powdered or fine granular activated carbon fixed by a special curing process |
| Primary function | Initial filtration of coarse particles (hair, dust) and adsorption of formaldehyde (HCHO), benzene, ammonia and other harmful gases |
| Physical advantages | Washable and reusable; low airflow resistance; flexible and easy to cut; good air permeability |
| Typical end uses | Air purifier pre-filter layer; fresh-air ventilation pre-filter; automotive cabin air filter; central air conditioning return grille; industrial vacuum cleaner |
| Customisation | OEM/ODM supported: thickness (e.g. 3 mm–50 mm), pore density (PPI), outline dimensions and die-cut shapes |
| Quality system | Produced in a 50,000 m² plant with 20,000 m² of clean rooms; ISO 9001, ISO 14001 and IATF 16949 certified |
In each application, the filter’s low pressure drop and flexible form allow it to be integrated without major system redesign.
Jyntrel has more than 20 years of experience in filter development and manufacturing, with continuous exports to Europe, the United States, Japan and South Korea for over two decades. The company operates multiple automated production lines with a monthly capacity of millions of pieces, supporting stable supply for volume orders. The production base covers 50,000 m², including 6 clean rooms totaling 20,000 m². Jyntrel holds ISO 9001, ISO 14001 and ISO 45001 certifications, and has been IATF 16949 certified since 2024. Products comply with REACH and RoHS requirements and can be supplied with compliance documentation. Quality control follows IQC, IPQC and OQC throughout the process, and the on-site CNAS-accredited laboratory can issue test reports for filtration efficiency, dust holding capacity and resistance. The company is located in Zhongshan, Guangdong, China.
To receive a tailored recommendation, please provide your device or vehicle model, required size or drawing, design airflow or water flow (if applicable), operating conditions such as temperature and humidity, and estimated annual quantity. Jyntrel’s engineering team will review the data and propose a suitable specification. Contact us to start the conversation.
The open-cell foam structure provides low airflow resistance, so the filter can operate at the face velocities typical of air purifiers and return grilles without a significant pressure-drop penalty. For very high velocities, Jyntrel can adjust thickness and pore density (PPI) to maintain performance. Please share your design face velocity for a specific recommendation.
We need the design airflow rate in m³/h (or face velocity in m/s) and the expected operating temperature and humidity. If the air stream contains oil mist or coarse dust, please describe the concentration and particle size. This data allows us to select the appropriate foam thickness and carbon loading.
Yes, the washable design allows the filter to be rinsed with water to remove accumulated dust, restoring airflow and reducing consumable cost. After washing, allow the filter to dry completely before reinstalling. Repeated washing will gradually reduce carbon adsorption capacity, so periodic replacement is still recommended.
Replacement depends on operating conditions, dust loading and gas concentration. Under normal indoor use, we suggest inspecting the filter every 1–3 months and replacing it when airflow drops noticeably or odors are no longer effectively controlled. Jyntrel can help define a maintenance schedule based on your specific application.
Yes, Jyntrel supports OEM and ODM customisation: thickness from 3 mm to 50 mm, pore density (PPI), die-cut shapes, private-label printing and packaging. Prototype samples are typically available within 5–7 working days after specifications are confirmed. Please provide a drawing or sample for accurate quoting.
For standard specifications, MOQ is typically 5,000–10,000 pieces; custom specifications generally start at 10,000 pieces depending on material and tooling. Production lead time is usually 25–35 days after order confirmation and sample approval. Multiple automated lines support flexible scheduling during peak seasons.
Yes, for B2B customers with a clear purchase intent, we can provide stock samples free of charge (freight collect). Custom samples may incur a sample fee, which is deductible from the bulk order. Samples help verify fit and performance before mass production.
Jyntrel products comply with REACH and RoHS requirements, and compliance documents can be provided. The company holds ISO 9001, ISO 14001 and ISO 45001 certifications, and the IATF 16949 certification obtained in 2024 further supports automotive supply. For specific market requirements, please contact us with details.