nanofleeces. In any case, the production of filters is an intricate affair – and the adhesive used has to fulfil a multitude of other tasks in addition to the bond [...] for private use, which are supposed to rid the indoor air of harmful influences. There are a number of differences between the various models, too: while some [...] simple filter media made of paper, other models from high-quality brands contain complex filter elements. These combination filters consist of materials such as activated
https://www.jowat.com/fr-FR/detail-de-la-salle-de-presse/a-medium-with-a-future/