Novel antimicrobial filter media made of electrospun nanofibres protecting against biological or non-biological airborne particles.

Z. Eckel, F. Karabulut, G. Höfler, G. Beckermann
NanoLayr, Ltd.,
New Zealand

Keywords: COVID, Filter, Mask, PPE, antimicrobial, sanitize, nano, nanofiber


In response to the worldwide pandemic, NanoLayr Ltd. focused on the development of functional filter media made of nanofibers that can detoxify itself. Electrospun nanofiber filter media have been successfully functionalised with antimicrobial additives. The different filtration mechanisms of nanofibers are particularly important when it comes to the filtration of viruses (such as COVID-19) and bacteria. Outstanding uniformity of nanofibers is shown by good correlation between pressure drop and basis weight across various test air velocities. Depending on the basis weight, the tested nanofiber filter media can pass the NIOSH 42CFR84 test method for N95 facemasks, for level 2 ASTM F2299 surgical facemasks, and ASTM F3502 test method with level 2 filtration efficiency and level 1 breathability, with level 2 breathability being achievable at lower basis weight. Resistance against different types of bacteria (Escherichia coli and Staphylococcus aureus), macrophage (PhiX174) and human coronavirus such as HKU1 and SARS-CoV-2 (COVID-19) has been demonstrated. NanoLayr will be showcasing its advancements in air filter technology, manufacturing, and testing facilities to multiple international standards, in an effort to provide a NZ supply chain for PPE and pandemic preparedness.