Mask
A mask and fiber sheet technology, applied in portable electrostatic devices, clothing, respiratory protection containers, etc., to achieve the effect of both air permeability
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Embodiment 1
[0024] (evaluation sheet of Example 1)
[0025] Regarding the evaluation sheet of Example 1, as the nonwoven fabric sheet corresponding to the first fiber sheet 13, a melt-blown nonwoven fabric sheet (average fiber diameter: 1.5 μm, weight per unit area: 2 g) made of electretized polypropylene was used. / m 2 ). In addition, as the nonwoven fabric sheet corresponding to the second fiber sheet 14, a spunbonded nonwoven fabric sheet made of electretized polypropylene (average fiber diameter: 17.6 μm, weight per unit area: 40 g / m 2 ). In addition, as the non-woven fabric sheet corresponding to the third fiber sheet 14, a point-bonded non-woven fabric sheet made of non-electretized polyethylene terephthalate / polyethylene (average fiber diameter: 17.6 μm, unit area Weight: 30g / m 2 ).
Embodiment 2
[0026] (evaluation sheet of Example 2)
[0027] Regarding the evaluation sheet of Example 2, as the nonwoven fabric sheet corresponding to the first fiber sheet 13, a melt-blown nonwoven fabric sheet made of electretized polypropylene (average fiber diameter: 1.5 μm, weight per unit area: 2 g / m 2 ). In addition, as the nonwoven fabric sheet corresponding to the second fiber sheet 14, a spunbonded nonwoven fabric sheet made of electretized polypropylene (average fiber diameter: 17.6 μm, weight per unit area: 30 g / m 2 ). In addition, as the non-woven fabric sheet corresponding to the third fiber sheet 14, a point-bonded non-woven fabric sheet made of non-electretized polyethylene terephthalate / polyethylene (average fiber diameter: 17.6 μm, unit area Weight: 30g / m 2 ).
Embodiment 3
[0028] (evaluation sheet of Example 3)
[0029] Regarding the evaluation sheet of Example 3, as the nonwoven fabric sheet corresponding to the first fiber sheet 13, a melt-blown nonwoven fabric sheet made of electretized polypropylene (average fiber diameter: 1.5 μm, weight per unit area: 2 g / m 2 ). In addition, as a nonwoven fabric sheet corresponding to the second fiber sheet 14, an air-through nonwoven fabric sheet made of electretized polyethylene terephthalate / polyethylene (average fiber diameter: 15.4 μm, weight per unit area: 30g / m 2 ). In addition, as the non-woven fabric sheet corresponding to the third fiber sheet 14, a point-bonded non-woven fabric sheet made of non-electretized polyethylene terephthalate / polyethylene (average fiber diameter: 17.6 μm, unit area Weight: 30g / m 2 ).
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