| 摘要 |
An effective technique for balancing mask breathability and mask trapping capability at higher levels is provided in a mask to be worn on a wearer's face. A mask 1 has a mask body 10 that covers at least wearer's mouth and nose and a pair of ear straps 20 that extend from both sides of the mask body 10 and are designed to be hooked around wearer's ears. The mask body 10 includes a first fiber sheet and a second fiber sheet which are electret nonwoven fabric sheets formed of polyolefin fiber. The first fiber sheet is a nonwoven fabric sheet having an average fiber diameter of 0.5 to 3 µm and a basis weight of 1.5 to 5 g/m 2 , and the second fiber sheet is a nonwoven fabric sheet having a larger average fiber diameter and a heavier basis weight than the first fiber sheet. |
