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The Thesvin paper-based humidifier filter is a cylindrical humidification filter made from high-absorbency humidifier paper or polymer humidifier fiber. It is designed for cold-evaporation humidifiers, air purifiers with humidification, and industrial constant-temperature/humidity equipment. It filters water-borne calcium and magnesium ions to suppress white powder, captures dust and hair from the air, and releases moisture evenly through a dense pleated honeycomb structure. This filter is for OEM/ODM buyers and appliance makers who need a precise dimensional match and reliable moisture management.
Fitment is the first specification we confirm. The Thesvin humidifier filter is built as a cylinder that seats into the water tray or humidification chamber of the host unit. Its outer diameter, inner diameter, and height define how it locates on the hub or support; the pleat count and pleat depth determine the evaporative surface area that fits inside that envelope. Because the filter operates while partially submerged, the paper must hold its shape when wet. The high wet stiffness of the base paper keeps the pleats from collapsing or separating during long soaking periods, so the cylinder maintains its interface with the tray and the airflow path.
We manufacture to your drawing: the cylindrical form, the pleat fold pattern, and the option of a composite anti-mold and antibacterial coating are all defined by the host device. If you are replacing an existing filter, the old part itself can serve as the dimensional reference. The frame-free paper construction means there are no hard plastic end caps to interfere with seating, but the wet-stiff paper provides the structural stability needed for the filter to stay in place. This fitment-first approach reduces the risk of bypass air or water channeling that would lower humidification output.
The Thesvin paper-based humidifier filter performs two functions in one component. First, it filters the air drawn through the humidifier: the dense pleated paper captures dust, hair, and other coarse particles, so the air released into the room is cleaner. Second, it filters the water used for evaporation. The high capillary effect of the paper draws water rapidly upward and across the pleat surface, where it evaporates into the airstream. As water moves through the paper, calcium and magnesium ions are intercepted, which helps prevent the fine white dust that hard water can deposit on furniture and surfaces.
The paper is treated for long-acting antibacterial and anti-mold performance. This addresses the sour, musty odor that can develop in humidifier water tanks and helps the filter stay fresh between replacements. The pleated honeycomb geometry provides a large evaporation area within a compact cylinder, supporting strong moisture output without a large footprint. Typical applications include household cold-evaporation (no-mist) humidifiers, high-end air purifiers with a humidification function, and industrial constant-temperature and constant-humidity equipment. In each case, the filter is selected for its combination of water absorption, white-powder control, and odor prevention.
| Item | Detail |
|---|---|
| Product name | Cylindrical humidifier filter / air purifier humidification core |
| Core humidification material | High-absorbency humidifier paper / polymer humidifier fiber |
| Core performance | Strong capillary water absorption and water molecule evaporation; intercepts calcium and magnesium ions in water (blocks white powder); long-acting antibacterial and anti-mold; removes water tank odor |
| Physical structure advantages | Dense pleated honeycomb process for large evaporation area; very high wet stiffness; does not collapse or fall apart during long-term soaking in the water tray |
| Main application end products | Household cold-evaporation no-mist humidifiers; high-end air purifiers with humidification; industrial constant-temperature and constant-humidity equipment |
| Specification and size customization | 100% OEM flexible custom manufacturing. Outer diameter, inner diameter, height, and pleat count of the cylinder, as well as whether a composite anti-mold and antibacterial coating is required, can be manufactured precisely to drawing requirements. |
| Quality certification system | Manufactured in the company's 50,000 m² modern clean workshop; the company has passed ISO 9001/14001 and IATF 16949 international quality management system certifications and has a national-level CNAS testing laboratory for quality control. |
Thesvin manufactures this humidifier filter in a 50,000 m² production facility in Zhongshan, Guangdong, China, which includes six clean workshops totaling 20,000 m². The company has passed IATF 16949 (certified in 2024), ISO 9001, ISO 14001, and ISO 45001. Dimensional consistency is controlled through IQC, IPQC, and OQC: incoming paper is checked, in-process pleating and cylinder dimensions are monitored, and outgoing filters are inspected against the approved drawing. The company's own laboratory is CNAS-accredited and can issue test reports for filtration efficiency, dust holding capacity, and resistance, as well as water absorption and antibacterial performance for this product.
We have more than 20 years of experience in filtration product development and manufacturing, with continuous exports to Europe, the United States, Japan, and South Korea. Products comply with REACH and RoHS environmental regulations, and compliance documents can be provided. Multiple automated production lines support a monthly capacity of millions of pieces. For this paper-based humidifier filter, standard specifications typically have an MOQ of 5,000 pieces; customized items are evaluated based on tooling and material minimums. Sample orders can be arranged flexibly. Normal lead time is 15–25 days after order confirmation, with bulk orders taking 30–45 days. First-time custom projects require an additional 7–15 days for sample approval. Packaging uses individual PE moisture-barrier bags with internal corrugated support and reinforced outer cartons; retail color boxes, barcodes, and multilingual instructions can be customized.
To receive a quotation, send us your device or vehicle model (where applicable), the filter size or a drawing, the expected airflow or water flow, your operating conditions (water hardness, temperature, duty cycle), and the quantity you plan to order. If a drawing is not available, an old part is sufficient for us to work from. Contact us via /en/contact and our engineering team will confirm the fitment and performance details.
Fitment is confirmed against your drawing or old part. We manufacture the cylinder to your specified outer diameter, inner diameter, height, and pleat count. The paper has very high wet stiffness, so it does not collapse or fall apart during long-term soaking in the water tray. Send us the dimensions or the old filter, and we will match the interface.
Yes. An old part is a practical reference for the fitment envelope, pleat pattern, and coating requirement. Our engineering team measures it and confirms the specification before sampling. This is often faster than preparing a drawing for replacement filters.
The paper is engineered for a strong capillary effect, drawing water rapidly across the pleated surface for evaporation. As water moves through the paper, calcium and magnesium ions are intercepted, which helps block the white powder associated with hard water. The dense pleated honeycomb structure provides a large evaporation area within the cylinder.
Yes. We support 100% OEM customization, including the option of a composite anti-mold and antibacterial coating on the paper. The base paper already has long-acting antibacterial and anti-mold treatment to resist sour odors in the water tank. Coating requirements are defined by your drawing or sample.
Standard specifications typically have an MOQ of 5,000 pieces; customized items are evaluated based on tooling and material minimums. Sample orders can be arranged flexibly. To get a quote, send your device model, size or drawing, airflow or water flow, operating conditions, and quantity via our contact page.
Normal lead time is 15–25 days after order confirmation, and bulk orders take 30–45 days. First-time custom projects require an additional 7–15 days for sample approval. Multiple automated production lines support a monthly capacity of millions of pieces.
Under typical household use, the filter should be replaced every 3–6 months, depending on water quality and usage frequency. The antibacterial and anti-mold treatment helps extend freshness, but mineral buildup and dust loading eventually reduce performance. Replacement intervals for OEM programs can be specified in the product documentation.
The product complies with REACH and RoHS environmental regulations, and compliance documents can be provided. The company holds ISO 9001, ISO 14001, ISO 45001, and IATF 16949 certifications, and the CNAS-accredited laboratory can issue test reports. For specific market requirements, contact us to confirm the documentation package.