Patent ID: 7597781

Claim:
An inorganic fiber paper characterized in that the inorganic fiber paper is produced from a material comprising 60 to 97% by mass of inorganic fibers having an average fiber diameter of not more than 5 μm and 3 to 40% by mass of an inorganic binder formed mainly of a silica-based flaky inorganic material that has a hydroxyl group content per specific surface area of not less than 20 μmol/m 2 as measured by a BET method, an average particle diameter of which is not more than 2 μm as measured by a laser scattering method and an aspect ratio of which is not less than 10, the inorganic fibers are bound to each other with the inorganic binder and the inorganic fiber paper consists substantially of only inorganic materials and has a basis weight of less than 100 g/m 2 .