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Nylon stocking layer addition in cloth masks could boost protection – Expert



NORTHEASTERN University Researcher, Loretta Fernandez has disclosed that homemade face mask with an extra outer layer made from nylon can significantly boost masks’ ability to filter out small particles.

  According to the civil and environmental engineering scientist, adding an outer layer made from nylon stockings to a homemade face covering can boost its ability to filter out small particles in the air by creating a tighter seal between the mask and the wearer’s face, adding that extra nylon layer helped homemade cloth masks match or exceed the filtering capability of medical-grade surgical masks in some cases.

  “It really improved the performance of all of the masks, and it brought several of them up and over the baseline mask we were using, which was a 3M surgical-type mask,” says Fernandez.

  His finding reveal that even the surgical mask performed better with stockings, going from blocking out 75 percent of small particles to 90 percent with the addition of a pantyhose over-layer.  He emphasised that an N-95 respirator, by comparison, is designed to block out at least 95 percent of small particles when worn properly.

  “Adding a layer that keeps the mask tight to the face is going to improve the function of any of these masks. This is stems from the face that  how well they protect us is not only a matter of what material we’re using to do the filtering but also how well [the mask] seals to the face, so that we’re trying to avoid air making it around the mask into our breathing zone.”

  The pantyhose layer helps create a tighter seal around the face to reduce how much air leaks around loose edges — similar to the seal on an N95 respirator.

  Additional findings say, CDC guidelines on cloth face coverings are intended to protect other people from the wearer, since evidence shows that people can spread the coronavirus before they’re even showing symptoms of infection, while new discovery shows that with the added nylon layer, homemade masks may also offer lots more benefit for the wearer.

  “Cloth masks,” Cowling says, “most likely provide some protection, maybe not as good as surgical masks” — which are constructed with nonwoven fabrics made from plastics. “But if we can upgrade [cloth masks] with nylon wrapping around the outside or some other special components, then perhaps we can get a cloth mask which is just as good or even better than a surgical mask.”

  It will be recalled that Anambra State government has issued a directive for all persons in the state to wear face masks, while keeping with safe distance in their interactions where necessary.

Nigerian Centers for Disease Control and Prevention has been on high pitch in their demand for citizens to always wear nose masks as well as maintain high level hygiene at this point in COVID-19 fight.

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