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This cylindrical humidifier filter is built around a spunlace non-woven fabric core that draws water upward by capillary action and releases it as vapour. It captures calcium and magnesium ions from the water to limit white dust, and it resists mould and odour during long soak periods. It is made by Ranveth for appliance makers and air-treatment brands that need a self-priming wick for evaporative humidifiers and humidifying air purifiers, in standard sizes or to your drawing.
The performance of a wick is set less by the material name on the data sheet than by how the fibre web and the pleated form work together. In this filter, the spunlace non-woven fabric is the water-carrying layer. Its fibre distribution is uniform, which gives a steady capillary pull from the water tray to the upper surfaces. On top of that, the media is pleated into a dense fold pack. The folds create a large evaporative surface inside a compact cylinder, so the same footprint can release more moisture without a larger fan.
That pairing also governs airflow resistance and service life. A denser fold pack increases surface area, but it can raise resistance if the pleat spacing is too tight for the appliance's airflow. The spunlace web is selected so that the pleat pack holds its shape when wet; the sheet stays upright in the water tray rather than collapsing or delaminating. Wet strength is the property that keeps the pleats apart over months of soak cycles, and that is what protects the balance between evaporation rate and pressure drop.
Water chemistry is the second half of the pairing. The same web is treated so that scale-forming ions are intercepted at the surface instead of being carried into the air as white dust. A mould and odour-inhibiting process is applied so that the media does not turn sour when it stays damp between cycles. These are media-level choices, and they are the reason the filter can be used continuously in a cold-evaporation appliance without chemical cleaning. If you are designing a new model, the fibre grade, the pleat count and the cylinder wall thickness can be tuned together rather than chosen one at a time.
| Item | Detail |
|---|---|
| Product name | Cylindrical humidifier filter / humidifying core for air purifiers |
| Core media | High-absorption humidifier paper, humidifier polymer fibre, spunlace non-woven fabric |
| Core performance | High water absorption and rapid evaporation; intercepts calcium and magnesium ions to limit white dust; long-acting antibacterial and anti-mould protection; reduces tank odour |
| Physical structure | Dense pleat fold for a large evaporative area; high wet stiffness so the pack does not collapse or come apart during long soaking |
| Typical end uses | Household cold-evaporation wick humidifiers, air purifiers with humidification, commercial and industrial constant-humidity equipment |
| Customisation | OEM build to your drawing: outer diameter, inner diameter, height, pleat count and optional antibacterial coating |
| Quality system | Made in a 50,000 m² plant; ISO 9001, ISO 14001 and IATF 16949 certified; CNAS-accredited laboratory used for quality control |
The filter is specified where water has to be moved into an airstream quietly and without a mist. In household cold-evaporation humidifiers, the cylinder sits in the water tray and the appliance fan pulls dry room air through the wet pleats; the air leaves with moisture but without visible droplets. Air purifiers that combine particle filtration with humidification use the same core to add moisture downstream of the filter stage, so the pleat pack has to stay clean and self-supporting while the purifier runs for long hours.
Commercial and industrial constant-humidity equipment uses the cylindrical format where a compact wick is easier to fit and replace than a flat cassette. In those units, the filter is often the part that sets the service interval, so the wet strength of the media and its resistance to scale build-up matter as much as the initial evaporation rate. Ranveth supplies this filter as a component for appliance assembly, not as a consumer accessory, and the build can be matched to the tray geometry and airflow path of each model.
To quote a custom cylinder, send the device model or a drawing showing the outer diameter, inner diameter and height you need. If a drawing is not available, a sample of the current filter or a photo with measured dimensions is enough to start. Please also state the airflow of the appliance and the water flow or tray volume, because those two numbers decide the pleat density and the media grade. Operating conditions such as inlet water hardness, continuous or intermittent use, and ambient temperature help us choose the antibacterial treatment and the wet-strength level.
Finally, tell us the order quantity and the packaging requirement. The cylinder is a 100% flexible OEM item: diameter, height, pleat count, fibre grade and an optional antibacterial coating can all be set to your specification. We can also discuss logo and packaging customisation as part of the same build.
Media choices on this filter are backed by measurement. Our in-house laboratory is accredited by CNAS, the China National Accreditation Service for Conformity Assessment, and can issue test reports on filtration efficiency, dust holding capacity and resistance. When we propose a spunlace grade or a pleat count, the recommendation can be checked against test data rather than assumed.
Production runs in a 50,000 m² plant that includes six cleanrooms totalling 20,000 m², which keeps the media away from dust during converting and assembly. The quality system is certified to IATF 16949, the automotive quality standard obtained in 2024, and to ISO 9001, ISO 14001 and ISO 45001. Products meet REACH and RoHS requirements and compliance documents can be supplied. Ranveth has more than 20 years of filter development and manufacturing experience and has exported to Europe, the United States, Japan and Korea for over 20 years. The company is located in Zhongshan, Guangdong, China.
If you are evaluating a wick for a new humidifier or air purifier, send the details above through our contact page. We will confirm the media build, sample availability and a quotation against your quantity. For buyers who prefer to start with a conversation, the same form reaches our engineering and sales team directly.
The water-carrying layer is a spunlace non-woven fabric, supported by high-absorption humidifier paper and humidifier polymer fibre. The media is pleated into a dense fold pack so the cylinder holds a large evaporative surface in a small volume. The combination is chosen so that capillary pull, airflow resistance and wet strength stay in balance for the appliance's duty cycle.
The dense pleat fold increases the evaporative area inside the cylinder, which raises moisture output for a given footprint. Pleat spacing is set against the appliance airflow so that resistance stays within the fan's capability. Because the wet-strength media keeps the pleats apart during soaking, the airflow path remains stable over the service life rather than closing up as the sheet softens.
Yes. The cylinder is a 100% flexible OEM item: outer diameter, inner diameter, height, pleat count, fibre grade and an optional antibacterial coating can be built to your drawing. Logo and packaging customisation are also available. Send the device model or a dimensioned drawing and we will confirm the build.
We need the device or vehicle model, a drawing or the outer diameter, inner diameter and height, the airflow and water flow or tray volume, the operating conditions and the order quantity. With those details we can quote and arrange samples. Custom samples are typically made after the drawing and specification are confirmed.
The minimum order quantity and production lead time are confirmed per project when the size, media grade and quantity are fixed. Because the filter is built to your drawing, both depend on the tooling and material selected. Please include your target quantity in the inquiry so we can give a firm figure.
Service life depends on water hardness and daily running hours, so we set the replacement interval with the appliance maker during development. The pleat pack is designed with high wet strength to resist collapse during long soaking. Rinsing behaviour and cleaning instructions are agreed as part of the specification so that the recommended interval matches the water conditions in your market.
The filter is designed to intercept calcium and magnesium ions from the water, which is the mechanism behind white dust. A mould and odour-inhibiting process is applied to the media to limit sour smells when the filter stays damp between cycles. Both properties are media-level choices that can be adjusted for the water quality of your target market.
Use the <a href="/en/contact">contact page</a> and include the device model, size or drawing, airflow or water flow, operating conditions and quantity. Our team will reply with the proposed media build, sample arrangement and a quotation. If you are still in the design stage, we can also advise on pleat count and fibre grade before a drawing is finalised.