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US 6,884,321 B2Granted
Fireblocking/insulating paper
AssigneeTex Tech Industries, Inc.
InventorsDavid F. Erb, Jr., Eric D. Ritter, Lisa B. Stang
Life of this patent
Estimating the term…
Abstract
A flame and heat resistant paper is disclosed having high burnthrough prevention capability, as required in aircraft applications. The paper is prepared from modified aluminum oxide silica fibers, in addition to other components, and has exceptional tensile strength and flexibility as compared to conventional inorganic papers.
Claims26
A fireblocking paper comprising:
- about 60 to about 99.5 percent by weight inorganic fibers having silicon dioxide as the main component and aluminum oxide as a lesser component, wherein a portion of the silicon atoms in the silicon dioxide are bonded to hydroxyl groups, and
- about 0.5 to about 40 percent thermoplastic organic fibers having a limiting oxygen index greater than about 27,
- wherein the thermoplastic organic fibers comprise poly (p-phenylenesulfide).
A fireblocking paper comprising:
- about 60 to about 99.5 percent by weight inorganic fibers having silicon dioxide as the main component and aluminum oxide as a lesser component, wherein a portion of the silicon atoms in the silicon dioxide are bonded to hydroxyl groups, and
- about 0.5 to about 40 percent thermoplastic organic fibers having a limiting oxygen index greater than about 27, and
- further comprising between 1 percent by weight and 20 percent by weight particulate mineral filler.
A fireblocking paper comprising:
- about 60 to about 99.5 percent by weight inorganic fibers having silicon dioxide as the main component and aluminum oxide as a lesser component, wherein a portion of the silicon atoms in the silicon dioxide are bonded to hydroxyl groups, and
- about 0.5 to about 40 percent thermoplastic organic fibers having a limiting oxygen index greater than about 27 and further comprising a waterproof treatment.
A high tensile strength paper comprising:
- about 60 to about 99.5 percent by weight acid extracted inorganic fibers comprising silicon dioxide and aluminum oxide, wherein a portion of the silicon atoms in the silicon dioxide are bonded to hydroxyl groups, and
- about 0.1 to about 10 percent by weight polyvinylalcohol organic binder fibers, and
- about 0.5 to about 40 percent organic thermoplastic fibers having a limiting oxygen index greater than about 27.
Dependencies are inferred from the claim text.