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This is a Ranveth dust bag with an interchangeable cover plate, built for robot vacuum auto-empty docks, handheld cordless vacuums and commercial vacuum bins. It captures fine household dust, PM2.5, dust mites, pollen and hair, and it is made for appliance makers, vacuum brands and OEM buyers who need the bag to match a specific dock or canister. The design pairs a multilayer composite PP media stack with a pluggable cover interface, so you can specify the media and the mechanical fit as one part rather than two.
The core of this bag is a multilayer composite PP construction: a polypropylene nonwoven base combined with meltblown layers, with an antibacterial filter cotton option. Each layer does a different job, and the way they are ordered is what sets the three numbers buyers care about most — capture efficiency, airflow resistance and service life.
The meltblown layer is the fine-filtration stage. Its fibre diameter is small and the web is dense, which is what lets the bag intercept PM2.5, dust mites, pollen and hair instead of passing them back into the room through the exhaust. The nonwoven layers around it give the structure support and spread incoming dust across the surface, so the meltblown stage is not loaded in one spot. That distribution is what sustains high dust holding capacity across the whole bag rather than only at the inlet.
The high-porosity, breathable design keeps running resistance low. A low-resistance bag lets the motor hold its suction, so the vacuum does not lose pickup performance as the bag fills, and the motor itself works under less load. In practice, media pairing is a trade-off: more meltblown weight raises efficiency but also raises resistance, and the layer build here is chosen so the bag combines fine capture with low resistance and a long service interval. The antibacterial filter cotton option adds a further functional layer for buyers who want odour and microbial control in the same stack.
The interchangeable cover is part of the same system. The bag uses a pluggable cover interface, available in rigid cardboard or eco-friendly injection-moulded plastic, and a sliding handle version is offered with automatic sealing so the bag closes as it is removed. A carbon-composite deodorising version can also be specified. Because the cover is a separate, customisable part, the media stack stays the same while the mounting interface changes to suit each device.
| Item | Detail |
|---|---|
| Product name | Vacuum cleaner dust bag — handheld vacuum dust bag / robot vacuum auto-empty dust bag |
| Core substrate | Multilayer high-precision composite PP (polypropylene nonwoven + meltblown), with antibacterial filter cotton option |
| Filtration function | High-precision interception of fine dust (PM2.5), dust mites, pollen, hair and other household allergens; prevents exhaust secondary pollution |
| Fluid and physical behaviour | High-porosity breathable design, very low operating airflow resistance, high dust holding capacity; does not drain motor suction |
| Main end uses | Robot vacuum auto-empty docks, handheld cordless vacuums, commercial vacuum bins |
| Size and cover customisation | Fully customised to device dimensions; rigid cardboard or eco-friendly injection-moulded plastic cover interface; sliding automatic-seal and activated-carbon deodorising versions available |
| Company systems | 50,000 m² modern clean production plant and CNAS-accredited testing centre; ISO 9001, ISO 14001 and IATF 16949 quality management systems |
The primary application is the auto-empty dock on robot vacuums, where the bag sits in the base station and receives dust emptied from the robot's onboard bin. In this position the bag must hold a large volume without restricting the dock's suction, which is why the low-resistance, high-capacity build matters.
The same construction is used in handheld cordless vacuums, where bag changes are frequent and the seal on removal has to be clean, and in commercial vacuum bins, where dust volumes are higher and the bag has to keep capturing fine particles through a longer duty cycle. Across all three, the interchangeable cover lets one media specification serve several device families while the mechanical interface is matched per model.
Custom builds start from the device, not the bag. Send us the model details and a sample, drawing or 3D model of the dock or canister, so the cover interface and bag dimensions can be matched to the housing. Tell us the airflow and suction characteristics of the device, and the operating conditions the bag will see — dust type, ambient humidity, expected change interval.
Also state the cover style you want (rigid cardboard, moulded plastic, sliding automatic seal, carbon deodorising version), any logo or packaging requirements, and the order quantity. If you already have a target efficiency or resistance figure, include it and we will select the media layers to meet it.
Media choices here are test-backed. Our in-house laboratory holds CNAS accreditation and can issue test reports on filtration efficiency, dust holding capacity and resistance, so the layer build you approve is supported by measured data rather than a datasheet claim.
Production runs in a 50,000 m² plant that includes six cleanrooms totalling 20,000 m², which keeps bag assembly out of a contaminated environment. The company is certified to IATF 16949 (obtained in 2024) and to ISO 9001, ISO 14001 and ISO 45001. Products meet REACH and RoHS requirements and compliance documentation can be supplied. With more than 20 years of filtration development and manufacturing, we have built over 1,000 filtration solutions and continue to export to Europe, the United States, Japan and Korea.
To move forward, send the device or vehicle model, the bag size or a drawing, the airflow or water flow of the system, the operating conditions, and your quantity. We will come back with a media recommendation, a sample plan and a quotation. You can reach the team through the contact page.
It uses a multilayer high-precision composite PP build: a polypropylene nonwoven base with meltblown fine-filtration layers, plus an optional antibacterial filter cotton layer. The nonwoven supports the structure and spreads dust, while the meltblown layer does the fine capture of PM2.5, dust mites, pollen and hair.
The bag is built for high porosity and very low operating airflow resistance, so the motor keeps its suction as the bag fills. Media pairing is a balance: adding meltblown weight raises efficiency but also resistance, and this build is chosen to hold fine capture without loading the motor.
Yes. Sizes are fully customised to device dimensions, and the interchangeable cover can be rigid cardboard or eco-friendly injection-moulded plastic. Sliding automatic-seal and activated-carbon deodorising versions are also available, and we work from your sample, drawing or 3D model.
Yes. Send the device model, size or drawing, the airflow of the system, operating conditions and your quantity, and we will reply with a media recommendation, a sample plan and a quotation. The contact page is the fastest route.
MOQ depends on the specification and cover design, since custom covers may require tooling. Share your target volume with the inquiry and we will confirm the MOQ for your configuration.
Lead time depends on whether the cover is a standard interface or a new moulded part. Once the sample is approved and the order confirmed, we will state the production schedule; our automated lines support monthly output in the millions of pieces for repeat orders.
Replace it when the bag reaches its rated fill or when suction noticeably drops, which depends on household dust load and device airflow. The high dust holding capacity is designed to extend the interval, and the sliding automatic-seal version closes on removal to keep the change clean.
Yes. The meltblown fine-filtration layer intercepts fine dust and allergens before air leaves the device, preventing exhaust secondary pollution. The bag also seals as it is removed on the sliding-handle version, so captured dust stays inside. Send your device details through the contact page to discuss the right build.
