Frequent replacement of air purifier filter consumables not only significantly increases user costs but also tends to waste resources. Cleantop has specially developed the Washable Activated Carbon Filter (Sponge Filter). This product uses polymer foam sponge as a stable carrier, with high-quality activated carbon powder firmly adhered to its surface. It not only serves as a perfect pre-filter to intercept large particles of dust and hair in the air but also deeply removes harmful gases like formaldehyde and TVOC. When the filter becomes saturated or clogged with dust, it can be directly washed with water, and its adsorption performance quickly recovers after drying, providing end users with excellent cost-effectiveness.
Get Custom Solutions for Washable FiltersOrdinary activated carbon filters can only be discarded once they are saturated or filled with dust. Our sponge-like activated carbon filter employs a special carbon stabilization process, allowing users to directly rinse it with clean water when the filter surface becomes dirty or odorous. After drying, its micropore structure is restored, enabling multiple cycles of use, greatly enhancing product cost-effectiveness.
It is the best partner for protecting expensive HEPA filters. Its polymer sponge structure effectively intercepts hair, fluff, and large particles of dust in the air, while the evenly distributed high-quality activated carbon effectively adsorbs volatile harmful gases and household odors such as formaldehyde, benzene, and ammonia, achieving the perfect combination of physical interception and chemical adsorption.
Compared to rigid folded filters or honeycomb blocks, the sponge-like material offers excellent flexibility and moldability. Whether in narrow car air conditioning ducts, curved fresh air system pipes, or various irregular structures of air purifiers, it can perfectly fit the air outlet. Cleantop supports 100% custom cutting and thickness according to drawings.
| Product Name | Washable Activated Carbon Filter (Sponge Type) / Washable Activated Carbon Sponge Filter |
|---|---|
| Core Substrate Composition | Polyurethane Foam Sponge |
| Core Adsorption Material | High-quality powdered/fine particle activated carbon cured by a special process |
| Core Purification Performance | Primary filtration of large particles (hair/dust) + highly effective adsorption of formaldehyde (HCHO), benzene, ammonia, and other harmful gases |
| Physical Structure Advantages | Washable and Reusable, very low air resistance, highly flexible and easy to cut, good breathability |
| Main Application Scenarios | Initial layer of air purifiers, pre-filter for fresh air ventilation systems, automotive air conditioning filter elements, central air conditioning return air ports, industrial vacuum cleaners |
| Specification and Size Customization | Fully supports OEM/ODM flexible customization. Provides stamping processing services for various thicknesses (e.g., 3mm-50mm), pore density (PPI), and outer dimensions. |
| Quality Certification System | Produced in a 20,000㎡ clean workshop by Cleantop, the enterprise has ISO9001/14001 environmental quality system and IATF16949 certification. |
Whether you are looking for washable primary filter cotton to reduce the frequency of consumable replacements, or custom low-resistance activated carbon sponge modules for your vehicle or fresh air systems, Cleantop, with over 20 years of development and manufacturing experience and a national-level CNAS testing center, will be your best choice.
Contact Engineering Team / Request Filter Cotton Samples and Custom QuotesOur adhesive carbon washable activated carbon filter uses high-iodine value coconut shell activated carbon granules, uniformly adhered to a metal mesh substrate through a patented adhesive carbon process, which provides efficient adsorption capacity for cooking fumes, VOCs, and common kitchen odors, with an odor removal efficiency of over 85%. The filter supports washing with lukewarm water for reuse, and under normal household conditions, its lifespan can reach 12-18 months, significantly reducing terminal users' replacement costs compared to disposable filters. Our CNAS testing center can provide third-party test reports for specific performance data.
Absolutely supported. As a professional manufacturer with over 20 years of experience in the development and production of filtration products, we can provide comprehensive customization services based on customer needs, including: filter sizes and shapes (circular, square, irregular), frame materials and colors, activated carbon weight and specifications, LOGO silk printing or labeling, colorful boxes/blister packaging/neutral packaging, etc. Our company has complete mold development capabilities and a 50,000㎡ production base, enabling us to rapidly respond to OEM/ODM projects and meet the differentiated needs of various brands.
Cleantop has passed the certification of ISO 9001, ISO 14001, and ISO 45001 systems, and has obtained multiple international certifications such as Europe's BSC1, the U.S. EPA, NSF, and SGS. In 2024, we added IATF16949 (automotive industry) and GMP certification for medical supplies. Our products have steadily been exported to developed markets such as Europe, the United States, Japan, and South Korea for over 20 years, fully meeting regional material safety, environmental, and compliance requirements for kitchen appliance parts, and we can provide clients with relevant test reports like REACH, RoHS, FDA, etc.
Our company has established a full-process quality control system from raw material entry to finished product delivery: 1) Raw materials undergo IQC testing by a CNAS nationally recognized laboratory, with key indicators such as activated carbon iodine value, particle size, and ash content checked in batches; 2) Production is completed in a 20,000㎡ clean workshop, ensuring the filter is dust-free and uncontaminated; 3) IPQC conducts online random checks for adhesive carbon uniformity and dimensional tolerance; 4) OQC performs sampling of finished products according to AQL 2.5 standards, including adsorption performance, appearance, and washing durability, among other projects. Each batch has complete quality traceability records to ensure batch consistency.
Our CNAS testing center has been accredited as a national laboratory, and the reports issued are recognized in over 100 countries and regions worldwide. For the washable activated carbon filter, we can provide tests for: activated carbon iodine value/carbon tetrachloride adsorption value testing, odor removal efficiency testing, airflow resistance testing, washing cycle durability testing, adhesive carbon firmness testing, size precision detection, etc. Customers developing new products or conducting third-party validations can directly use our laboratory resources, saving the time and cost of external testing.
The standard specification product MOQ is usually 1000-2000 pieces, while the MOQ for customized products varies based on mold conditions, approximately 3000-5000 pieces; specific quantities can be flexibly negotiated based on project conditions. In terms of delivery time: standard products in stock can be shipped within 3-7 days; OEM custom orders generally take 25-35 days after sample and order confirmation; our 50,000㎡ factory has sufficient capacity to ensure large volume orders. Urgent orders can be prioritized in production; please let us know your specific needs for accurate delivery time reporting.
Yes, we highly welcome customers to conduct sample evaluations before placing orders. Standard specification samples can generally be provided for free (customers bear the international express fee), while customized samples may require a certain sampling fee based on development difficulty, which is usually refundable or deductible upon bulk ordering. Sample delivery time: standard products are sent out within 1-3 working days, customized samples within 7-15 working days. We will include detailed technical specifications and CNAS test reports with the samples to facilitate quick evaluations by customers.
The adhesive carbon process is one of our core achievements developed over 20 years of technical accumulation and has the following advantages compared to traditional packed or carbon cloth filters: 1) Larger activated carbon exposure area provides higher adsorption efficiency; 2) The patented adhesive ensures that carbon particles do not fall off during washing, allowing for washable reuse; 3) Low airflow resistance does not affect the suction performance of range hoods; 4) Lightweight structure makes it easy to adapt to various brands of range hood structures; 5) High degree of production automation, offering more competitive unit costs. This product has been adopted by several top European and American kitchen appliance brands and has received excellent market feedback.
