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US 4,786,670 AGranted
Compressible non-asbestos high-temperature sheet material usable for gaskets
AssigneeLydall, Inc.
InventorsDouglas Tracy, Frank W. Major
Life of this patent
Estimating the term…
Abstract
A non-asbestos compressible sheet material usable for high-temperature gaskets preferably containing 10-50% by weight of an inorganic fibrous material, 10-90% by weight of an inorganic filler material, 4-30% by weight of an organic elastomeric binder, 2-10% by weight of an inorganic silicate binder and 1.0-10% of an organic fibrous material. The sheet material of the present invention may be manufactured on standard paper-making machinery.
Claims12
A compressible non-asbestos sheet material usable for high temperature gaskets, said material comprising:
- inorganic fibrous material,
- inorganic filler material,
- organic fibrous material, and
- a dual binder system, said dual binder system consisting of an organic binder material and an inorganic binder material.
1 more element
Dependencies are inferred from the claim text.