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Contact Oltaven's sintered activated carbon block filter is a finished filter that combines a high-efficiency dust-holding ultrafine fibre layer with a high-iodine coconut-shell activated carbon…
FILTER MEDIA / ROLLS · SHEETS · DIE-CUT
Oltaven's sintered activated carbon block filter is a finished filter that combines a high-efficiency dust-holding ultrafine fibre layer with a high-iodine coconut-shell activated carbon core, bonded into one rigid block by high-temperature sintering. It captures dust particles, PM2.5, formaldehyde, VOCs and odour molecules in one pass, and is made for air purifiers, fresh-air systems, vehicle cabin air filters, odour-removal vacuum cleaners, printer and copier ozone control, range hoods, integrated stoves and refrigerators. Oltaven supplies the finished filter, engineered and assembled in its own plant in Zhongshan, Guangdong, China.
The media sets the ceiling, but the finished filter decides what the equipment actually gets. A coconut-shell carbon with an iodine value above 1000 mg/g has plenty of adsorption surface, yet loose granular carbon or carbon felt can shift, channel or shed dust inside a device. Sintering changes that: the carbon particles are bonded at high temperature into a self-supporting block, so airflow passes evenly through the whole depth instead of finding a preferred path. Oltaven's anti-dust-shedding process keeps carbon fines inside the block, protecting printer internals, fans and sensors downstream.
Pleating and framing then translate that material into a part. The ultrafine fibre layer is pleated to add dust-holding area in a shallow space, and the carbon block is formed to the shape the device allows — flat, round or profiled. The frame and sealing hold the block in place so air cannot slip around the edge, and the whole assembly is built to a drawing rather than cut from a generic sheet. This is why Oltaven sells finished filters, not just media: the forming step is where efficiency, resistance and capacity are actually settled.
Capacity comes from carbon quality and mass. High-iodine coconut-shell carbon gives more active sites per gram, and a uniform sintered block uses that mass evenly. Our carbon block is specified for ozone removal above 95% in a single pass, and it also adsorbs VOCs and odour molecules at the same time.
Resistance is a property of the finished part. An ultra-low-resistance design keeps fan load and energy use down, which matters in appliances that run continuously. Because the block is sintered rather than packed, there is no loose fill to compact or migrate, so resistance stays stable through the service life instead of drifting.
The pleated ultrafine fibre layer handles particulate load, and the composite construction means one part performs dust removal and odour control, freeing space in compact equipment. Sealing and frame choice determine whether the air actually goes through the media or around it. Oltaven develops the structure, dimensions, filter grade, frame material, logo and packaging to the customer's device.
Oltaven's sintered carbon block filters are used as ozone removal filters in printers and copiers, washable odour removal filters and integrated-stove odour filters in range hoods, and refrigerator odour removal filters, as well as in fresh-air systems, vehicle cabin air filters, odour-removal vacuum cleaners and household or commercial air purifiers. For ozone control in office equipment, the block is shaped to the machine's airflow path so that ozone, VOCs and odours are treated in a single pass. In kitchen and refrigeration use, the same construction targets odour molecules while the fibre layer holds grease and dust. Each application is matched to its own airflow, space and operating conditions rather than adapted from a catalogue part.
| Item | Detail |
|---|---|
| Core product name | Sintered carbon block / activated carbon HEPA composite filter |
| Filter media composition | High-efficiency dust-holding ultrafine fibre layer plus high-iodine coconut-shell activated carbon core |
| Process and structure | One-piece high-temperature sintering, anti-dust-shedding technology, ultra-low air resistance |
| Core applications | Fresh-air system pre-filtration and fine filtration, vehicle cabin air filters, premium odour-removal vacuum cleaners, household and commercial air purifiers |
| Targets removed | Dust, dust particles, PM2.5, formaldehyde, VOCs (volatile organic compounds), odour molecules |
| Factory certifications | ISO 9001 / ISO 14001 / ISO 45001 / IATF 16949 / CNAS-accredited laboratory |
| Procurement and customisation | Filter structure development, specification customisation, machining to drawing or sample (OEM / ODM) |
Oltaven supports OEM and ODM programmes and has developed more than 1,000 filtration solutions over 20 years of research and manufacturing. Production runs in a 50,000 m² plant in Zhongshan, Guangdong, China, including six cleanrooms totalling 20,000 m². Our own laboratory is CNAS-accredited and can issue test reports on filtration efficiency, dust holding capacity and resistance. We are certified to IATF 16949 (obtained in 2024) and hold ISO 9001, ISO 14001 and ISO 45001 system certification. Products meet REACH and RoHS requirements and compliant documentation can be supplied.
To quote accurately, tell us the device or vehicle model, the required size or a drawing, the airflow or water flow, the operating conditions and the quantity you expect. Send these details through our contact page and our team will respond with a proposal, sample plan and lead time. We welcome long-term OEM and ODM partnerships.
Resistance depends on how the finished filter is built, not only on its outer dimensions. A sintered carbon block is bonded into one rigid body so air passes evenly through the depth, while loose granular carbon or felt can compact or channel. Oltaven's sintered construction is designed for ultra-low air resistance, and the pleated fibre layer adds dust-holding area without blocking flow.
It starts with the device model, required size or drawing, airflow, operating conditions and expected quantity. Oltaven reviews these and proposes a structure, media grade and frame option, then produces samples for evaluation. Standard samples are free, and custom samples may carry a tooling or development charge.
In printer and copier ozone control, the sintered activated carbon block removes more than 95% of ozone in a single pass. The high-iodine coconut-shell carbon, sintered at high temperature, also adsorbs VOCs and odours at the same time. Performance can be optimised to the actual airflow and operating environment, with reports available from our CNAS-accredited laboratory.
Yes. Oltaven customises dimensions, shape (square, round or profiled), thickness and frame material such as plastic, metal or paper, based on your drawing, sample or device model. Logo and packaging can also be customised, including neutral packing, brand packing, colour boxes and moisture-barrier bags.
Standard models typically have an MOQ of 500–1,000 pieces, while custom models are negotiated by specification. Standard samples can be provided free for evaluation, and custom samples may carry a mould or development fee. Send your specifications through the contact page for a formal quotation.
Sample lead time is generally 7–15 working days depending on customisation complexity. Bulk orders usually ship in 25–35 days, and urgent orders can be scheduled for expedited production. Our automated lines support monthly output of millions of pieces for long-term programmes.
Replacement depends on ozone concentration, airflow and temperature and humidity in use; a typical interval is 6–12 months, or by the device's accumulated operating hours. Oltaven can supply life-test data and replacement recommendations for your specific application.
Production runs in six cleanrooms totalling 20,000 m² inside our 50,000 m² plant. Incoming carbon is checked for iodine value, ash and moisture, our CNAS-accredited centre tests ozone removal, pressure drop and penetration, and finished goods follow AQL sampling with an inspection report. Contact us to discuss your requirements.