Compostable medical face mask

Abstract

A compostable medical mask is provided with a printable outer non-woven layer. The outer non-woven layer includes bonded first fibers with first fiber diameters in a range from approximately 1 micron to approximately 100 microns. At least one intermediate non-woven filtration layer is provided. The intermediate non-woven filtration layer has second fibers having a second fiber diameter in a range from approximately 50 nanometers to approximately 800 nanometers. An inner non-woven layer for contacting a mask-wearer, the inner non-woven layer including bonded third fibers having third fiber diameters in a range from approximately 1 micron to approximately 100 microns. The compostable medical mask has a bacterial filtration efficiency of at least 98%, a sub-micron particulate filtration efficiency of at least 98%, a viral filtration efficiency of at least 98%, a splash resistance repelling synthetic blood at 160 mm Hg, and differential pressure of less than 5.0 mm HO/cm.