Inorganic fiber sheet

Abstract

To provide an inorganic fiber sheet with high workability, which is also excellent in tackiness or adhesiveness when a pressure-sensitive adhesive or an adhesive has been applied thereto. The inorganic fiber sheet is a non-woven fabric containing inorganic fibers. The inorganic fiber sheet has a thickness T of 1 mm or more and contains shots derived from inorganic fibers and having a diameter of 45 μm or more. The shots included in the inorganic fiber sheet is distributed in a sheet thickness direction as represented by Formula 1. Provided that Formula 1 is “1−Y/X≤ 0.11”, where X represents “a total weight of the shots in the inorganic fiber sheet per unit area “/” a total weight of the inorganic fiber sheet per unit area”, and Y represents “a weight of the shots per unit area included in the inorganic fiber sheet from which a portion having a thickness t and satisfying 0≤t≤s is removed, provided, however, that 0.10 mm≤s≤0.55 mm, with a wire side surface of the inorganic fiber sheet as a reference surface “/” a weight per unit area of the inorganic fiber sheet from which the portion having the thickness t is removed with the wire side surface of the inorganic fiber sheet as the reference surface”.

Dependencies are inferred from the claim text.