A mask including a sub-filter layer and having improved intake resistance and filtering efficiency

摘要

The mask according to the present invention includes an outermost layer comprising a nonwoven fabric having a basis weight of 10 to 100 g/m ² ; A sub-filter layer comprising a melt-blown nonwoven fabric having a basis weight of 20 to 300 g/m ² , a thickness of 0.1 to 5.0 mm, and an air permeability of 200 to 2,000 CFM; A main filter layer having a basis weight of 10 to 100 g/m ² and including an electrostatically treated nonwoven fabric; And an innermost layer comprising a nonwoven fabric having a basis weight of 10 to 100 g/m ² is sequentially stacked, and the outermost layer, the sub filter layer, the main filter layer and the innermost layer of the nonwoven fabrics are each independently polyethylene terephthalate or It is made of a material containing polyolefin, and may have a KF80 grade or higher.