A KN95 mask is a type of protective mask that is made for personal protection against dust, smoke, airborne diseases, viruses, and bacteria. This mask has a very different structural component from the other face shields and masks, such as the face mask, which only covers the face and is built from vast materials to create the barrier. A collection of polymers are collected together, and after laboratory testing, hydrophobic polypropylene was bought forth as the best material to be used in the manufacturing of this mask. In return, a 95% efficiency of the filter was realized by these masks hence the name KN95.
How efficient is the KN95 mask
The polymers of the KN95 mask are intact and close to each other; this makes it hard for the diseases present in the air to get into the respiratory system. Under an estimate, only 0.3 nanoparticles can travel through the mask to an individual through the air via Brownian motion, where microparticles of the atmosphere move randomly through the help of atom and molecules. This is captured by the outer material of the mask, containing this hydrophobic polypropylene via electrostatic and mechanical forces, and the air is filtered properly to the system. Due to this, the mask works efficiently by filtering out the healthiest breathable air as possible.
This mask’s effectiveness, however, is hindered by some activities which affect the way it’s supposed to work purposely clinically.
Soiling of the mask, fluids like sweat and makeup sometimes soil the mask, which in turn makes the force that holds these particles more diverse hence lesser efficiency, which can lead to the risk of infection. It is clinically advised, because of this reason, that the mask is exchanged after eight hours to regulate, dispose, or clean the mask as needed to maintain the structure and functionality of the KN95 mask. You are advised to wear a face shield over the mask to avoid you from soiling.
Cleaning method; any subject to extra heat like the UV light, microwave heat, and boiling effects can affect the components used in making these masks. This not only leads to the ultimate disruption of the polymers in the material but also disrupts the movement of particles of air even when worn because of the high viscosity of particles through Brownian motion. A hot heated
KN95 mask might not prevent you from the unwanted particles compared to the other normal temperature. It is advised that these masks should be clean via the steam method, using liquid hydrogen peroxide, in moist heat or dry heat on a recommended clinical degree of 70 degrees Celsius. The opposite precautions of not cleaning these masks are boiling on hot water, bleaching, using alcohol and sanitizing wipes, or putting it to dry on a microwave.
You are advised to carefully store your mask on a paper bag that is breathable enough, ensuring that your masks do not touch each other and that they are just dry enough for usage. This inhibits airborne diseases that might be present in a mask, for instance, the recent coronaviruses from spreading since they are viable for only 72 hours. They should also be as dry as possible. The masks are deemed reusable under this hygienic approach, and no harm or infection can happen out of the normal via this method.
If these factors are put into consideration, then the KN95 mask will work as efficiently as possible.