Importance

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Abstract

Facemasks and methods utilizing nanofibers are provided. The facemask and methods provided reduce pressure drop and enhance filtration of airborne particles. In one embodiment there is a facemask, comprising: an inner layer comprising non-woven fiber material configured to contact a wearer's nose and mouth; a middle layer disposed on the inner layer and comprising a nanofiber material; an outer layer disposed on the middle layer and comprising nonwoven fiber material, the facemask having upper and lower edges and at least one pleat configured to fit over a chin of the wearer when unfolded, the at least one pleat configured for folding and unfolding the facemask such that when folded the facemask is configured to assume a generally flat storage configuration and when unfolded the facemask is configured to cover at least the nose and mouth of the wearer.

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First Claim