New nanofiber mask can block 80% of particulates  

香港纳米口罩夺国际发明奖 更轻更薄可隔80%粒子

据香港《明报》报道，口罩对预防传染病及过滤空气污染物起关键作用，惟传统口罩却有防护力不足及呼吸困难等问题。香港理工大学机械工程学系教授梁焕方花9年时间，研发出一种“多层纳米纤维过滤器”，用其制造的口罩，粒子及细菌能阻隔八成粒子，媲美N95的九成，不过用料更轻更薄，令呼吸更轻松。此项发明早前获日内瓦国际发明展颁发特别奖及金奖，料于今年内投产。[查看全文]

(ECNS) – A mask with a nanofiber filter has been invented by a professor at Hong Kong Polytechnic University, which can resist 80 percent of pollutant particulates, according to the Ming Pao Daily.

Leung Wallace Woon-fong spent nine years developing the multi-layer nanofiber filter, which also won awards at the Geneva International Exhibition of Inventions.

Made with several layers of nanofibers and non-wovens, the mask can resist 80 percent of particulates no less than 300 nanometers, compared with the 28 percent that traditional masks can obstruct, Leung said.

As the filter material is lighter and thinner than traditional ones, adding one more layer of nanofilter can make the mask function as well as an N95 mask, but its breathability is much better, according to Leung.

Leung added that some other functions such as sterilization can be added to the mask, but he didn't reveal its functions, as a patent is being sought.

Cooperation on manufacturing the mask is in negotiations, and it's possible the new mask may be on the market by the end of the year, Leung said.