If you are fortunate enough to know a quilter, ask them to make you a mask. Tests performed at the Wake Forest Institute for Regenerative Medicine in Winston-Salem, N.C., showed great results for KN95 Mask For COVID-19 using quilting fabric. Dr. Segal, of Wake Forest Baptist Health, who led the research, noted that quilters tend to use high-quality, high-thread count cotton. The best homemade masks in his study were as good as surgical masks or slightly better, testing within the range of 70 to 79 percent filtration. Homemade masks that used flimsier fabric tested as low as 1 percent filtration, Dr. Segal said.
The very best-performing designs were a mask constructed of two layers of high-quality, heavyweight “quilter’s cotton,” a two-layer mask created using thick batik fabric, and a double-layer mask with an inner layer of flannel and outer layer of cotton.
Bonnie Browning, executive show director for your American Quilter’s Society, stated that quilters prefer tightly woven cottons and batik fabrics that operate over time. Ms. Browning said most sewing machines can handle only two layers of fabric when you make a pleated mask, but someone who wanted four layers of protection could wear two masks at any given time.
Ms. Browning said she recently reached in the market to quilters on Facebook and heard from 71 people who have produced a combined total of nearly 15,000 masks. “We quilters are very much within the thick of what’s taking place with this particular,” said Ms. Browning, who lives in Paducah, Ky. “One thing most of us have is actually a stash of fabric.”
People who don’t sew could try COVID-19 Face Masks Sale, developed by Jiangmei Wu, assistant professor of home design at Indiana University. Ms. Wu, who is recognized for her breathtaking folded artwork, said she began designing a folded mask out of a medical and building material called Tyvek, as well as vacuum bags, after her brother in Hong Kong, where mask wearing is normal, suggested it. The pattern is free online, as is a video demonstrating the folding process. In tests at Missouri University and University of Virginia, scientists found that vacuum bags removed between 60 percent and 87 percent of particles. However, many brands of vacuum bags may contain fiberglass or are harder to breathe through than many other materials, and shouldn’t be utilized. Ms. Wu used a bag by EnviroCare Technologies, that has stated it fails to use fiberglass in its paper and synthetic cloth bags.
“I desired to create an alternative for those who don’t sew,” said Ms. Wu, who said she actually is speaking with various grouPS to discover other materials that will be effective in a folded mask. “Given the shortage of all sorts of materials, even vacuum bags might run out.”
The scientists who conducted the tests used a typical of .3 microns because this is the measure utilized by the National Institute for Occupational Safety and Health for Face Masks For COVID-19.
Linsey Marr, a Virginia Tech aerosol scientist as well as an expert inside the transmission of viruses, said the certification way of respirators and HEPA filters targets .3 microns because particles around that size would be the hardest to trap. While it seems counterintuitive, particles smaller than .1 microns are in reality easier to catch because there is a great deal of random motion that creates them bump into the filter fibers, she said.
“Even though coronavirus is around .1 microns, it floats around in a wide range of sizes, from around .2 to many hundred microns, because people shed the virus in respiratory fluid droplets that also contain plenty of dkbeiy and proteins along with other things,” said Dr. Marr. “Even if the water in the droplets fully evaporates, there’s still plenty of salt and proteins along with other gunk that stays behind as solid or gel-like material. I believe .3 microns remains ideal for guidance since the minimum filtration efficiency is going to be somewhere around this size, and it’s what NIOSH uses.”