Frequent changes of purifier filter materials not only significantly increase user costs but also contribute to resource waste. Cleantop has specially developed the Washable Activated Carbon Filter (Sponge-like Filter Cotton). The product utilizes polymer foamed sponge as a stable carrier, with a solid attachment of high-quality activated carbon powder on its surface. It serves as an excellent pre-filter layer, intercepting large particles of dust and hair in the air while effectively removing harmful gases such as formaldehyde and TVOC. Once the filter is saturated or clogged with dust, it can be directly washed with water, and after air drying, its adsorption performance is quickly restored, providing end-users with an exceptional cost-performance experience.
Get Customized Washable Filter Material SolutionsTraditional activated carbon filters must be discarded once saturated or filled with dust. Our sponge-like activated carbon filter employs special carbon solidification processes. When the filter surface collects dust or the odor becomes heavier, users can simply rinse with clean water. After air drying, its micropore structure is released, allowing for multiple cycles of use, greatly enhancing the product's economy.
It is the best partner to protect expensive HEPA filters. Its polymer sponge structure can intercept hair, lint, and large particles of dust in the air first; simultaneously, the uniformly distributed high-quality activated carbon can effectively adsorb harmful volatile gases such as formaldehyde, benzene, and ammonia from new homes and other odors, achieving a perfect combination of physical interception and chemical adsorption.
Compared to rigid folded filters or honeycomb blocks, sponge-like materials offer excellent flexibility and plasticity. Whether it's a narrow car air conditioning duct, a curved fresh air system duct, or various shaped air purifiers, it fits perfectly at the air inlet. Cleantop supports 100% cutting processing and thickness customization according to drawings.
| Product Name | Washable Activated Carbon Sponge Filter |
|---|---|
| Main Material Composition | Polyurethane Foam Sponge |
| Core Adsorption Material | High-quality powdered/fine particle activated carbon under special curing processes |
| Core Purification Performance | Initial filtration of large particles (hair/dust) + strong adsorption of formaldehyde (HCHO), benzene, ammonia, and other harmful gases |
| Physical Structure Advantages | Washable, very low resistance, strong flexibility, easy cutting, good breathability |
| Main Application Scenarios | Initial layer for air purifiers, pre-filter for fresh air ventilation systems, car air conditioning filter, central air conditioning return air outlets, industrial vacuum cleaners |
| Specifications and Size Customization | Fully supports OEM/ODM flexible customization. Provides various thicknesses (e.g., 3mm-50mm), hole density (PPI), and stamping processing services for custom shapes. |
| Quality Certification System | Relying on Cleantop's 20,000㎡ clean workshop production, the company has obtained ISO9001/14001 environmental quality system and IATF16949 certification. |
Whether you are looking for washable initial filtration cotton to reduce the frequency of material replacement or seeking a low-resistance activated carbon sponge module customized for your vehicle/ventilation system, Cleantop, with over 20 years of R&D and manufacturing experience as a national-level CNAS testing center-certified supplier, will be your best choice.
Contact Engineering Team / Request Filter Cotton Sampling and Custom QuotationOur oil removal filter cotton features a high-density multi-layer composite fiber structure, efficiently filtering grease particles and oil mist aerosols produced by air fryers, while possessing low resistance and high dust holding capacity. Standard gram weight, thickness, and flame retardancy levels (up to UL94 HF-1/V-0) can be adjusted according to customer models. All performance data can be provided with authoritative test reports issued by our national CNAS testing center.
Under normal household usage frequency (3-5 times per week), the suggested lifespan of our oil removal filter cotton is 1-3 months. Actual lifespan depends on cooking frequency, food grease content, and model air volume design. We can conduct lifespan matching tests based on customers' overall machine designs and indicate recommended replacement cycles on the packaging and manual, helping end brands enhance user experience and material repurchase rates.
Cleantop has passed ISO 9001, ISO 14001, ISO 45001 system certifications, and products meet EU REACH, RoHS, and US FDA food contact material requirements, suitable for export to major markets such as Europe, the United States, Japan, and South Korea. We also hold certifications such as European BSCI, US EPA, NSF, and in 2024, newly obtained IATF16949 and medical GMP certifications, which fully meet brand merchants' stringent supply chain compliance requirements.
We fully support OEM/ODM. As a manufacturer with over 20 years of experience in the filtration industry, accumulating over 1000 filtering solutions, we can customize filter cotton sizes, shapes (round/square/irregular), weights, colors, printed logos, as well as independent packaging, color boxes, blister packaging, instructions, etc. Our professional R&D team can provide one-stop services from design to sampling and mass production, with regular sampling timeframes of 5-7 days.
Cleantop has a factory area of 50,000㎡, with 20,000㎡ being a clean workshop (6 in total), compliant with production standards for food contact and medical filter materials. In terms of quality control, we implement a three-tier testing system of incoming IQC, process IPQC, and outgoing OQC. Key performance indicators (filtering efficiency, resistance, gram weight, flame retardancy) are fully inspected or sampled with national-level CNAS laboratory equipment to ensure consistency and stability of each batch of products. The IATF16949 certification obtained in 2024 further validates our quality control management system.
The standard product MOQ is typically 5,000–10,000 pieces; custom specifications generally start at 10,000 pieces depending on materials and molds. Sample sampling period is about 5-7 business days, while bulk delivery time is usually 25-35 days after order receipt and sample confirmation. We have multiple automated production lines and can flexibly schedule productions during peak seasons, supporting various shipping methods including sea freight, air freight, and express delivery.
Yes. For B2B customers with clear procurement intentions, we can provide free shipping of stock samples (customers bear freight); for custom samples, we will charge a sample fee based on development difficulty, which can be deducted from the payment after bulk ordering.
The oil removal filter cotton is considered a light disposable item. We use vacuum compression + moisture-proof bags + double corrugated export cardboard boxes for packaging, effectively saving cabinet space and preventing moisture deformation. The product should be stored in a cool, dry place away from fire sources and strong oxidizing agents, with a shelf life of 2 years when unopened. We can provide customized labeling, mixed shipping cabinets, and various trade methods such as FOB/CIF/DDP as per customer requests.
