| 摘要 |
PROBLEM TO BE SOLVED: To provide a protective sheet as a material exhibiting excellent protective performances against liquid chemical substances and particulate substances, above all excellent liquid osmosis inhibitory functions under pressure, permeating air, light in weight, and affording excellent comfort.SOLUTION: This protective sheet is provided by laminating at least three sheet material layers of upper layer, intermediate layer including a non-woven fabric with a mean single fiber diameter of 10 nm or above and 2000 nm or below, and lower layer, whereas the air permeability of the protective sheet is 5 cm/cmsec or above, whereas the oil repellency of the lower layer of the protective sheet stipulated by AATCC Test Method 118-2002 is Grade 3 or above. |
