China News Service, Guangzhou, May 9 (Reporter Xu Qingqing) The new nano-filter mask product made in Guangzhou was officially released on the 9th. This mask is the first mask in the Mainland to have a filter membrane with a smaller pore size than the new coronavirus. It can be reused for a long time. It has been in mass production for more than 200 hours.
On May 9th, a new type of nano-filter mask made in Guangzhou was officially released. This mask is the first mask in the Mainland that has a smaller membrane pore size than the new coronavirus and can be reused for more than 200 hours. Image courtesy of Guangzhou Donghong Fluoroplastic Co., Ltd.
The reporter learned from the Guangzhou Municipal Bureau of Industry and Information Technology that the mask is produced by Guangzhou Donghong Fluoroplastic Co., Ltd. and has three outstanding advantages:
The first is the use of PTFE nanofiltration membrane as the protective layer, the fiber diameter is smaller than that of the new crown virus (90 nanometers), the physical isolation principle is directly used, and the hard core filters the virus, and the filtration performance is excellent (the filtration efficiency reaches more than 99%), which is more reliable.
The second is that it can be worn around the clock, and the filtering performance is not affected by wet, sweating, humid weather, etc. And can be reused. After 15 times of hot water rinsing, the filtration effect did not decrease.
Third, the material is safe and breathable. Food contact grade materials, no odor. The wearer's somatosensory comfort is better than ordinary masks, suitable for children and other sensitive groups, and its breathability is far better than ordinary masks.
Comparison chart of traditional melt-blown filter material and nano filter material. Image courtesy of Guangzhou Donghong Fluoroplastic Co., Ltd.
It is understood that PTFE nanofiltration membrane, as a rookie for mask filtering materials, has more excellent comprehensive performance than traditional melt-blown nonwoven fabrics, and a longer service life, and can withstand boiling water, alcohol, ultraviolet rays and other disinfection methods.
"Most of the protective masks on the market that currently use melt-blown non-woven fabrics filter PM2.5 and viruses by electrostatic adsorption. Once the mask is wet, the filtering function will be disabled, so it needs to be replaced every 4 hours." National Day Feng Hao, senior engineer of Technical Development Center of Electrical Appliance Quality Supervision and Inspection Center, introduced that the filtration principle of PTFE nanofiltration membrane is physical barrier, and the filtration effect is not affected by moisture and other factors. It is more suitable for summer sweating and humid environments. It can be worn every day and can be reused by rinsing with hot water.
It is reported that this new mask has passed the national daily protective mask technical specification standard, medical industry disposable medical mask standard, and safe use test. And has passed the "reusable" performance test, the existing test data shows that after 15 hot water rinses, the filtration efficiency and ventilation resistance of the mask have not changed. (Finish)