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The present invention is directed to a face mask comprising a multi-layer filter material. One or more antimicrobial and/or hydrophilic and/or stain release agents are adhered to a textile material that forms the outer layers of the multi-layerfilter material. The agent(s) is/are adhered to the textile material in such a manner that they are not released from the textile material even if the WO2018036890A1 - Wash-durable face mask with The present invention is directed to a face mask comprising a multi-layer filter material. One or more antimicrobial and/or hydrophilic and/or stain release agents are adhered to a textile material that forms the outer layers of the multi-layerfilter material. The agent(s) is/are adhered to the textile material in such a manner that they are not released from the textile material even if the

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Apr 22, 2020 · Wearing a non-surgical face mask cannot completely prevent you from contracting COVID-19unlike an N95 mask, which filters 95% of particles in the airbut the CDC says it