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Contact This Oltaven paper-based humidifier filter is a cylindrical cartridge that uses highly absorbent paper media to draw water upward and release it as moisture, while capturing dust, hair and…
FILTER MEDIA / ROLLS · SHEETS · DIE-CUT
This Oltaven paper-based humidifier filter is a cylindrical cartridge that uses highly absorbent paper media to draw water upward and release it as moisture, while capturing dust, hair and some bacteria from the air. It is designed for cold-evaporation humidifiers, air purifiers with humidification, and industrial constant-temperature/humidity equipment. The filter also helps intercept calcium and magnesium ions in water to reduce white powder, and its antimicrobial treatment fights mould and odours. Oltaven supplies finished filters, customised to your drawing or device model.
Media is only the starting point. The finished filter’s efficiency, resistance and capacity are decided by how that media is pleated, framed and sealed. Oltaven’s paper-based humidifier filter uses a dense pleated honeycomb structure that creates a large evaporation surface. The pleating pattern and fold count are chosen to balance airflow with water uptake, so the filter can hold enough water without becoming restrictive. The forming process also gives the filter high wet stiffness, so it does not collapse or fall apart during long soaking in a water tank. Framing and sealing keep the media in shape and prevent bypass, which is why two filters with the same dimensions can behave very differently in service.
Because Oltaven makes the finished filter, not just the media, we control every step that affects performance. The paper or polymer fibre is selected for capillary effect and antimicrobial properties, then pleated and formed into a cylinder, and finally assembled with the required frame or coating. This is why our filters deliver fast water absorption, strong evaporation and long-term mould resistance in real humidifiers.
Three factors drive the performance of a paper-based humidifier filter: media choice, pleat geometry and sealing integrity. The media must have a high capillary effect to pull water quickly and release it evenly; our papers and fibres are treated for this, and they also carry antimicrobial protection to prevent mould and the sour smell that develops in poorly treated filters. The pleat geometry, including fold count and depth, sets the evaporation area and the resistance to airflow. More folds give more surface, but if the pleats are too tight the airflow drops. Oltaven tunes this balance for each application.
Sealing and framing matter just as much. A filter that is not properly sealed will let air bypass the media, reducing efficiency. Our cylindrical filters are formed to keep their shape when wet, and the end seals are designed to hold up to constant immersion. This is why our filters maintain performance over their 3–6 month service life (depending on water quality and usage).
Oltaven’s paper-based humidifier filters are used in household cold-evaporation (no-mist) humidifiers, high-end air purifiers with humidification, and industrial constant-temperature/humidity equipment. In each case, the filter’s job is to absorb water, release moisture, and capture airborne dust, hair and some bacteria, while its antimicrobial treatment keeps the filter fresh and helps prevent white powder by intercepting calcium and magnesium ions. The cylindrical shape fits many standard humidifier designs, and we can customise outer diameter, inner diameter, height and fold count to match your device.
| Item | Detail |
|---|---|
| Product name | Cylindrical humidifier filter / air purifier humidification core |
| Core humidification material | Highly absorbent humidifier paper / polymer humidifier fibre |
| Core performance | Strong capillary water absorption and moisture release; intercepts calcium and magnesium ions (reduces white powder); long-lasting antimicrobial and mould resistance; removes tank odours |
| Physical structure | Dense pleated honeycomb design for large evaporation area; very high wet stiffness; does not collapse or disintegrate during prolonged immersion |
| Main end applications | Household cold-evaporation (no-mist) humidifiers; high-end air purifiers with humidification; industrial constant-temperature/humidity equipment |
| Customisation | 100% OEM customisation: outer diameter, inner diameter, height, fold count, and optional antimicrobial coating to drawing |
| Quality certification | Manufactured in a 50,000 m² modern clean plant; ISO 9001/14001 and IATF 16949 certified; CNAS-accredited laboratory for quality control |
Oltaven brings over 20 years of filter development and manufacturing experience to every project, with more than 1,000 filter solutions developed to date. Our 50,000 m² plant in Zhongshan, Guangdong, China, includes six cleanrooms totalling 20,000 m², giving us the controlled environment needed for consistent production. Our in-house laboratory is CNAS-accredited and can issue test reports on filtration efficiency, dust holding capacity and resistance. We are certified to IATF 16949 (achieved in 2024) and hold ISO 9001, ISO 14001 and ISO 45001 system certifications. Our products meet REACH and RoHS environmental requirements, and we can provide compliance documents on request. This infrastructure supports the custom paper-based humidifier filters we supply to customers in Europe, the US, Japan and Korea.
To get an accurate quote and sample, please tell us your device or vehicle model, the size or a drawing, the airflow or water flow, the operating conditions (water quality, temperature, duty cycle) and the quantity you need. Oltaven is ready to partner with you on a custom humidifier filter that meets your performance and compliance requirements. Contact our team to start the conversation.
Resistance depends on pleat geometry, media permeability and sealing, not just outer dimensions. Two filters with the same diameter and height can have different fold counts, pleat depths and paper grades, so airflow resistance varies. Oltaven tunes these variables for each application to balance evaporation and resistance.
It starts with your requirements: device model, dimensions or drawing, airflow or water flow, operating conditions and quantity. Oltaven then evaluates the specification, recommends materials and pleat design, and provides samples for your approval. After validation, we proceed to production with full quality control.
Efficiency is not a fixed number because it depends on media grade, pleat design and operating conditions. Our filter is designed for strong capillary absorption and moisture release, and it captures dust, hair and some bacteria while reducing white powder. For specific efficiency data, we can test samples in our CNAS-accredited laboratory and provide a report.
Yes. We support 100% OEM customisation, including outer diameter, inner diameter, height and fold count, as well as optional antimicrobial coating. Provide a drawing or sample, and we will manufacture to your precise requirements.
For standard items, we can provide small samples free of charge; you cover international shipping. For custom samples, a fee may apply depending on complexity, and this fee is deductible from bulk orders. Quotations are prepared after we review your specifications.
The MOQ for standard specifications is typically 5,000 pieces, but it varies by style; custom products are evaluated based on tooling and material minimums. Standard lead time is 15–25 days, bulk orders 30–45 days, and custom projects add 7–15 days for sampling and confirmation.
Under normal use, the recommended replacement interval is 3–6 months, depending on water quality and usage frequency. Signs that replacement is due include reduced humidification, unpleasant odour, or visible mould or scale buildup.
Please use the <a href="/en/contact">contact form</a> to share your device model, size or drawing, airflow or water flow, operating conditions and quantity. Our team will respond with a tailored proposal and quotation. We look forward to partnering with you.