| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a holding sealing material capable of attaining high shear strength, excellent winding ability, and binder reduction. <P>SOLUTION: The holding sealing material comprises laminating: a needle mat including entangled first inorganic fibers and a binder; and a sheet-processed mat including second inorganic fibers processed into a sheet and a binder, the needle mat and the sheet-processed mat together, wherein staple fibers having a shorter average fiber length than an average fiber length of the second inorganic fibers are localized in an interface area extending from an interface between the needle mat and the sheet-processed mat into the needle mat, and a binder content of the interface area is higher than a binder content of the needle mat in terms of weight rate. <P>COPYRIGHT: (C)2010,JPO&INPIT |
