New Invention: Multilayer nanofibre filter – nanoaerosols capture and added functions

An inventor from China presented at the International Exhibition of Inventions of Geneva 2014 the invention: “Multilayer nanofibre filter – nanoaerosols capture and added functions”.


The invention consists of low-pressure drop filter for effective nanoaerosol filtration, VOC conversion and bacteria killing. Due to the small sizes, nanoaerosols (diesel particulates, laser-printer particles, viruses and small bacteria) can get into our respiratory, vascular, lymphatic and nervous systems, leading to various chronic diseases.


The multilayer nanofibre filter using multiple thin nanofibre layers, each supported by a permeable scrim material, attains high-capture efficiency of nanoaerosols. It also has a lower pressure drop compared to the case in which all nanofibres are packed in a single-layer.    


By functionalizing the nanofiber layer(s), gaseous pollutants can be converted to harmless substances while bacteria can be killed.


Special features and advantages:


  1. The multilayer nanofibre filter has a low pressure drop.
  2. Nano-pollutants and viruses can be filtered by multilayer nanofibre filter far more  

       effectively than conventional microfibre filter.

  1. Each nanofibre layer can have different added functions, for example:


  • Layer(s) with TiO2 –composite nanofibres under visual light (including room light)  convert pollutant gases (Volatile Organic Compound, NO, etc.) to harmless substances, and
  • Chitosan nanofibres, when wetted (for example: sweat), kill bacteria.




  • Face masks for surgeons, and workers who labor and sweat;
  • Respirators for the general public and care professionals under epidemics;
  • Cabin filters for airplanes, vehicles, trains and ships;
  • Ventilation filters for indoor areas (auditoriums, classrooms, gymnasiums, offices, etc.).


The inventor is interested in commercialization of this invention and is seeking appropriate interested manufacturer. European Patent Registration and Consulting Services GmbH has made direct contact with the inventor and has access to information about the invention directly from the inventor. Interested parties for the invention can contact European Patent Registration at