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The cotton candy machine transform it sugar heated in fine filaments thanks to the centrifugal force. Enough to create delicious, soft and voluminous confectionery. Mahesh Bandi, a physical of the ‘OIST Graduate University in Okinawa (Japan) I just found a new one application to this device: make a respiratory filter for anti-Covid masks. N95 type masks contain electrocharged filters that attract and retain virus, which guarantees its effectiveness. But the devices for making these filters are rare and expensive.
The technique developed by the researcher, described in the review Proceedings of the Royal Society A, consists of replacing sugar with plastic ordinary. The machine heats the plastic and transforms it into filaments which are also electrically charged by the spinning process. This “mesh” is then cut into small squares and can be used as a virus filter. Mahesh Bandi then developed his own 3d printed mask where the filter is easily inserted and removed (each mask requires three filters). According to the study, laboratory tests have shown that these filters are just as effective as standard N95 masks at filtering out viruses such as SARS-CoV-2. So, if you are more skilled at cooking than sewing, now you know how create your masks !
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