| 摘要 |
<p>[object] To provide a sheet member with a smaller amount of scattering of fibers upon being handled and having an appropriate holding power when used as a holding and sealing member. [Solution] A sheet member including inorganic fibers, including a first outer layer; a center layer; and a second outer layer; in which the first outer layer, the center layer, and the second outer layer are laminated with each other such that both the first and the second outer layers are outermost layers; the center layer includes inorganic fibers having diameters equal to or less than 3 micrometers; and the first and the second outer layers include inorganic fibers having diameters greater than 3 micrometers.</p> |
