Inorganic fiber paper

Details Inorganic fiber paper Inorganic fiber paper

2005-11-22

2009-10-06

Halpern, Mark (Department: 1791)

Paper making and fiber liberation

Processes and products

Non-fiber additive

C428S219000, C429S247000, C429S066000

Reexamination Certificate

active

07597781

ABSTRACT:
This invention provides an inorganic fiber paper that consists essentially of inorganic materials and has a basis weight of less than 100 g/m2and has been mainly produced by a wet sheet making method. The inorganic fiber paper comprises inorganic fibers and an inorganic binder as materials, wherein the inorganic fibers have been bound to each other with the inorganic binder. In the inorganic fiber paper, the content of impurities during wet sheet making is low, the water resistance and flexibility are good, and satisfactory strength and high porosity can be realized. 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 composed mainly of a silica-based flaky inorganic material that has a hydroxyl group content per specific surface area of not less than 20 μmol/m2as measured by a BET method, an average particle diameter of not more than 2 μm as measured by a laser scattering method and an aspect ratio of not less than 10.

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