In recent years, international studies have provided evidence of the impact of the smallest particles on our health. The smaller the particles, the more dangerous they are, as they can penetrate deeper into the human respiratory system and cause serious health problems – even death. To counteract this, the filter specialists at MANN+HUMMEL are now using wafer-thin nanofibres in the further developed FreciousPlus, setting new standards in cabin air filtration. The innovative filter not only impresses with its separation of ultra-fine particles, but also with the filtration of harmful gases both from outside and inside the vehicle. The new FreciousPlus also offers proven protection against allergens, bacteria and mould fungi.

Innovative nanofibre technology in the FreciousPlus cabin air filter

‘Our MANN-FILTER FreciousPlus FP 38 004 features the finest nanofibres, which are about 100 times thinner than the fibres of conventional filter fleeces,’ says Thomas Heininger , Director Engineering Cabin Air Filters at MANN+HUMMEL. ‘These fibres cover the other filtration layers with coarser fibres like a spider's web, enabling them to trap ultra-fine particles. This enables the FreciousPlus with nanofibres to separate 90 percent of the even finer PM1 class, in addition to the PM10 and PM2.5 particle classes, i.e. particles with an aerodynamic diameter of less than 1 micrometer. The FreciousPlus filters up to 80 per cent of ultra-fine particles (UFP), which are smaller than 0.1 micrometres, with nanofibres, thus achieving top values. By way of comparison, these extremely small particles are about 700 times smaller than a human hair,’ explains Heininger.

Comprehensive performance spectrum over entire service interval

The extraordinarily thin nanofibre is also designed to make the FP 38 004 resistant to humidity and temperature fluctuations, and to provide consistently high filtration over the entire replacement interval.

Regular change recommended

To ensure that the FreciousPlus cabin filter with nanofibres can work reliably, it should be replaced once a year or every 15,000 kilometres. ‘We recommend that local specialists regularly remind vehicle owners of the importance and benefits of the cabin filter. Unfortunately, most drivers are not aware of this,’ says Heininger.

Patent already applied for

MANN+HUMMEL has been granted a patent for nanofibre technology by the German Patent and Trade Mark Office, which protects certain aspects of the filter media and the underlying production process. MANN+HUMMEL has also already applied for patents for this technology in other countries.

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