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Contact This is a high-efficiency partitionless mini-pleat panel filter from Oltaven — a frameless-separator HEPA/ULPA panel built around glass fibre or PTFE media and held in an anodised aluminium…
FILTER MEDIA / ROLLS · SHEETS · DIE-CUT
This is a high-efficiency partitionless mini-pleat panel filter from Oltaven — a frameless-separator HEPA/ULPA panel built around glass fibre or PTFE media and held in an anodised aluminium or stainless steel frame with hot-melt adhesive as the pleat separator. It removes micron-scale particles from supply air, and is used in cleanrooms, GMP workshops, operating theatres, FFU units and high-end HVAC systems. It is intended for facility engineers, cleanroom contractors and equipment OEMs who need a finished, tested filter rather than loose media, with efficiency grades from M6 to U16.
Filter media sets the ceiling of what a filter can do. The finished filter decides how much of that ceiling you actually get. A glass fibre or PTFE sheet can hold a very high efficiency on a laboratory bench, yet the same sheet placed in a poorly formed panel will leak at the frame, shed adhesive into the airstream or collapse its pleats under pressure. That is why Oltaven sells finished filters: the media is one input, and pleating, framing and sealing are the steps that turn it into a predictable component.
Pleating is the first transformation. The media is folded into a tight mini-pleat pack, which packs a large filtration area into a shallow 50 mm or 70 mm depth. More pleats mean more area, and more area means lower face velocity at a given airflow. Because resistance rises steeply with velocity, a well-formed pleat pack keeps initial resistance low and dust-holding capacity high. Form the pleats too tightly, or crush them during handling, and the air finds short paths with high velocity and the pressure drop climbs.
Separating the pleats is the second decision. In this partitionless design, hot-melt adhesive beads run across the pleat tips instead of aluminium or paper separators. The adhesive holds the pleat spacing open, so air passes evenly through every fold. It also removes the metal or paper divider that would otherwise obstruct part of the media and add weight. The result is a thinner, lighter panel that uses the full media area.
Framing and sealing close the loop. The pleat pack is bonded into an anodised aluminium profile or a stainless steel frame, and the bond line must be continuous around the whole perimeter. A filter is only as efficient as its weakest seam: a pinhole at the frame edge lets unfiltered air bypass the media entirely, and the measured efficiency of the unit falls even though the media itself is unchanged. That is why every Oltaven panel is scan-tested before it leaves the plant.
Efficiency, resistance and capacity are decided together, and the levers interact.
The practical consequence is that two filters of identical outside dimensions can behave very differently. A denser pleat pack with a continuous frame bond will show lower resistance and longer service life than a loosely formed panel of the same footprint, because the air is spread across more media and cannot escape around the edges.
Because the platform covers M6 through U16, one panel family serves several duty levels.
The shallow 50 mm and 70 mm depths make the panel a fit for retrofit work where deeper filter housings are not available.
| Item | Detail |
|---|---|
| Product type | High-efficiency partitionless panel filter (mini-pleat panel filter) |
| Core media | Quality glass fibre or PTFE |
| Frame material | Anodised aluminium profile or stainless steel |
| Separator | Quality hot-melt adhesive |
| Efficiency class | M6 to U16, covering medium to ultra-high efficiency |
| Typical applications | Microelectronics and semiconductor cleanrooms, pharmaceutical GMP workshops, hospital operating theatres, high-end commercial building HVAC systems, FFU units |
| Standard sizes and airflow (W × H × D) | 305 × 610 × 50 mm (rated airflow 350 CMH); 610 × 610 × 50 mm (750 CMH); 1170 × 570 × 50 mm (1300 CMH); 1170 × 1170 × 70 mm (3600 CMH). Further sizes available with 50 mm or 70 mm depth options |
| Customisation | Non-standard sizes and OEM service supported using the company's 20000 m² clean workshop area and CNAS testing centre |
Oltaven is built around OEM/ODM work. Over more than 20 years of filter development and manufacturing we have accumulated more than 1,000 developed filtration solutions, and we customise size, structure, media grade, frame material, logo and packaging for customers who sell under their own name.
Production runs in a 50,000 m² plant in Zhongshan, Guangdong, China, which includes six cleanrooms totalling 20,000 m². Our own laboratory is CNAS-accredited and can issue test reports covering filtration efficiency, dust-holding capacity and resistance.
The quality system holds ISO 9001, ISO 14001 and ISO 45001 certification, and in 2024 we added IATF 16949 certification for the automotive sector. Products meet REACH and RoHS requirements, and compliance documents can be supplied. We have exported to Europe, the United States, Japan and Korea for more than 20 years.
To quote accurately we need a few details: the device or vehicle model, the size or a drawing, the airflow or water flow the filter must handle, the operating conditions, and the quantity you expect per order. Send these through our contact page and our team will respond with a proposal. We welcome long-term OEM/ODM partnerships and sample orders for evaluation.
Resistance depends on how much media area the pleat pack exposes to the airflow and how evenly air passes through it. A denser, well-separated mini-pleat pack spreads the same airflow over more media at lower velocity, so resistance stays lower. A loosely formed panel with collapsed or uneven pleats forces air through fewer paths at higher velocity and shows a higher pressure drop for the same footprint.
The platform covers M6 to U16, so it spans medium-efficiency through ultra-high-efficiency duty. At the high end, H13, H14 and U15 to U17 versions reach 99.95% to 99.9995% filtration efficiency on 0.3 μm or MPPS particles. Every unit is scan-tested before shipment, so the rated efficiency applies to the finished filter, not just the media.
Yes. Size, structure, media grade and frame material are all customisable, and we offer anodised aluminium or stainless steel frames with glass fibre or PTFE media. Standard depths are 50 mm and 70 mm; other requirements are reviewed against your drawing. Non-standard sizes and OEM service are supported using our 20,000 m² clean workshop area and CNAS testing centre.
It starts with your requirement details: device or housing dimensions, target efficiency class, airflow and operating conditions. We then propose media, frame and separator, issue a drawing for approval and produce samples for your evaluation. Once the sample is validated, the approved specification goes to production with IQC, IPQC and OQC checks.
Yes, sample orders can be arranged for evaluation, and we can discuss the sample plan alongside your target quantity. Samples are tested for resistance and efficiency at the agreed airflow so you can compare them against your current filter. Tell us the model and size through the contact page and we will confirm the sample arrangement.
Standard sizes generally start at 50 to 100 pieces, while customised specifications usually start at 100 to 200 pieces depending on structural complexity; new customers and sample orders can be discussed flexibly. Standard items ship in 7 to 15 days, and custom orders typically take 20 to 30 days, with urgent orders negotiable.
Under normal conditions, with G4 pre-filtration and F8 medium filtration upstream, service life is typically 3 to 5 years. Actual life depends on site dust concentration, operating airflow and the final resistance set point. We can supply initial, rated and final resistance data plus performance curves at different airflows to help you set a change-out point.
Send the device or vehicle model, size or drawing, required airflow, operating conditions and expected quantity through our contact page. With those details we can select media, frame and depth and return a specification and price. We also welcome long-term OEM/ODM supply arrangements.