| 摘要 |
This invention pertains to a layered sheet comprising an inherently flame resistant high strength fiber wet-laid nonwoven carrier having a first and second surface and an inorganic refractory layer adjacent to at least one surface of the carrier wherein the refractory layer has a dry areal weight of from 15 to 50 gsm and the bond strength between the refractory layer and the surface of the paper is at least 0.25 lb/in, preferably at least 0.8 lb/in, wherein the carrier comprises from 70 to 90 weight percent of aramid fibers and from 10 to 30 weight percent of polymeric binder, is hydrophilic, has a thickness of from 0.025 to 0.175 mm and a density of from 0.25 to 1.1 g/cc. |
