Melt-Blown (MB) Filters Melt-blowing is a commercially successful, low-cost process for producing microfibers used in filtration. Melt-Blown (MB) filters are created through this melt-blowing process, which entails blowing out melted polypropylene filaments out of a small nozzle at a high temperature and speed. This process often creates an uneven flow of melt, which makes fiber[…]
As we all know by now, one of the most simplest yet effective methods to prevent the spread of COVID-19 is to wear a mask. However, in a recently updated guidance, the Centers for Disease Control and Prevention (CDC) warned against wearing masks with exhalation valves or vents because such masks do not prevent the person wearing the mask from transmitting COVID-19 to others.