Controlling specific properties of paper wet laids for air filtration by means of hydro-entanglement

R. Heidenreich*, Institute of Air Handling and Refrigeration (ILK); T. Schulze, Thüringisches Institut für Textil- und Kunststoff-Forschung e.V.; F. Gebauer, Papiertechnische Stiftung (PTS), Germany

Air filtration is a „Green Market“. But, this time filtration materials will be classified more by functional aspects than sustainable. Actual tendencies leading to small filter housings and lower use of energy. That’s why filter materials are more and more made by synthetic fibers. Technical features better can be adjusted with polymer chemistry. But this is not “Green”.

Therefore a research project was carried out to push possibilities of natural fibers – paper.

The project aim was to control the porosity of paper by reorienting its fibres through hydro-entanglement in the paper machine. The wet-laid nonwovens will be converted to novel and functionalized paper filter media that can be used to make deep filtration air filters from renewable raw materials and with performance characteristics and performance data comparable to synthetic- / glass-fibre-based filter media. The novel air filter media should offer high filtration efficiency and dust holding capacity as well as comparatively low pressure losses at high layer thickness. The results of the project showed that...

Session: G9 - Short Oral Presentations
Day: 23 October 2019
Time: 14:45 - 16:00 h

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