Dust Bag with Reversible Paper Cap for Robot Vacuums and Handheld Vacuums

This is a dust bag with a reversible paper cap, made by Oltaven for robot vacuum auto-empty bases, handheld vacuums and commercial vacuum bins. Its multilayer composite PP meltblown media captures fine dust, mites and allergens, while the low-resistance design helps maintain suction. It is designed for appliance makers and vacuum brands that need a finished, custom-fit bag rather than raw media.

From Media to Finished Filter

A dust bag is a finished filtration component, not a roll of fabric. The bag starts with a multilayer composite of polypropylene nonwoven and meltblown layers, sometimes with an antibacterial filter cotton layer. How those layers are pleated, combined and fixed to the bag body decides what the finished bag can do. The same media formed into a loose bag with poor seams will leak dust; formed into a tight, well-sealed bag with a smooth air path, it will hold particles and keep airflow steady.

Oltaven sells the finished bag. That means we control the forming steps: layer stacking, pleat or bag shaping, the cardboard or plastic cap interface, and the sealing that keeps the bag closed during removal. Each step affects efficiency, resistance and dust capacity in the final product.

What Decides Finished Performance

Media choice sets the baseline

The core material is a multilayer high-precision composite PP (polypropylene nonwoven plus meltblown) or an antibacterial filter cotton. Meltblown layers are the fine-fiber barrier that catches small particles; nonwoven layers give strength and support. The number and order of layers set the starting point for particle capture.

Pleating and bag geometry set resistance and capacity

High porosity and a breathable design keep operating resistance low. A low-resistance bag lets the vacuum motor keep its collection suction without working harder. Bag geometry also sets dust capacity: a larger, well-shaped bag holds more dust before airflow drops. In the finished product, pleating and bag shape balance resistance against capacity.

Framing and sealing decide fit and cleanliness

The bag connects to the vacuum through a rigid cardboard cap or an eco-friendly injection-molded plastic cap. That interface must match the device opening exactly; otherwise air and dust bypass the bag. Oltaven also offers a sliding auto-seal version: when the bag is removed, the opening closes and the user does not touch the dust. A carbon-composite odor-control version is available for applications where odors matter.

Together, media, forming and sealing explain why two bags of the same outer size can perform differently. Efficiency comes from the media and layer integrity; resistance comes from porosity and air path; capacity comes from bag volume and how evenly dust loads on the media.

Applications

The main use is the auto-empty base of smart robot vacuums, often called a dock. The bag collects dust emptied from the robot, so it must fit the dock interface and seal tightly. The same bag type is used in handheld cordless vacuums and commercial vacuum bins. Because sizes and caps vary by device, Oltaven customizes the bag to the equipment dimensions rather than offering a universal shape.

Typical filtration targets include fine dust (PM2.5), dust mites, pollen, hair and other household allergens, with the aim of preventing secondary pollution from exhaust air. The high-porosity, breathable design supports high dust capacity and low operating resistance, so collection suction is not lost as the bag fills.

Technical Specifications

The Oltaven Factory and Certifications

Oltaven has more than 20 years of filter product development and manufacturing experience and has developed over 1,000 filtration solutions. Our OEM/ODM capability covers size, structure, filter grade, frame material, logo and packaging, so a dust bag project can be built around your device rather than adapted from a stock item.

The production base covers 50,000 m², including six cleanrooms totaling 20,000 m², which helps avoid secondary contamination during production. Our in-house laboratory is CNAS-accredited and can issue test reports on filtration efficiency, dust capacity and resistance. The company holds IATF 16949 (obtained in 2024), ISO 9001, ISO 14001 and ISO 45001 system certifications. Products meet REACH and RoHS environmental requirements and compliance documents can be provided. The address is Zhongshan, Guangdong, China.

OEM/ODM Workflow

1. Share your device model, bag interface drawing or sample, and target airflow or suction conditions.
2. Oltaven reviews the fit and proposes media grade, layer structure, cap type (cardboard or plastic), and sealing option (standard or sliding auto-seal).
3. We produce samples for your evaluation; typical sample lead time is 7–15 working days for custom structures.
4. After sample approval, we confirm specifications, packaging and order quantity.
5. Production runs under IQC, IPQC and OQC controls, with key parameters checked in the CNAS laboratory.
6. Finished bags are packed to your branding requirements and shipped from Zhongshan, Guangdong, China.

Start a Custom Project

To quote a custom dust bag, please tell us your device or vehicle model, the size or a drawing of the bag interface, the airflow or suction conditions, and your estimated quantity. Oltaven will respond with a proposal and sample plan. Contact our team to begin.