Protective fabric and fire curtain with a metallic laminate
OwnerJohn W. Weberinventor
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Abstract
A fire retardant which is suitable for use as a protective material in garments, clothing, fire curtains, barriers or screens is disclosed. The fabric employs an amorphous silica core having a minimum of 96% silica by chemical analysis. The core fiber is encapsulated in a wrapping or covering which may be of polybenzimidazole, aramids, blends of aramids with other fibers and/or polyacrylonitrile fibers or blends thereof. The core fiber and wrapping comprise a heat resistant yarn which may be woven into a heat resistant fabric which may then be aluminized on one or both sides thereof.
Claims20
A high temperature resistant fabric comprised of yarns, having a core of high temperature resistant refractory material silica and covering of a second high temperature resistant fiber selected from the group consisting essentially of aramid, phenolic, polyacrylonitrile and polybenzimidazole fibers, and a metallic laminate.
A high temperature resistant fabric comprised of composite yarns, each yarn further comprised essentially of a core of high temperature silica having the thermal performance of refractory material and a covering of polybenzimidazole, and a metallic laminate.
A high temperature resistant fabric having structural integrity above 1800.degree. F., said fabric comprised of:
- interwoven yarns, each of which is comprised essentially of a core filament of high temperature silica having the thermal performance of a refractory material, and a covering of polybenzimidazole sheating said core, and a metallic laminate.
Dependencies are inferred from the claim text.