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    • 99. 发明授权
    • Multilayered sheet
    • 多层板材
    • US09316342B2
    • 2016-04-19
    • US14386832
    • 2013-04-17
    • E I DU PONT DE NEMOURS AND COMPANY
    • Dariusz Wlodzimierz Kawka
    • G10K11/168E04B1/94E04B1/88F16L59/02D21H27/30D21H13/26B64C1/40
    • F16L59/029B64C1/40D21H13/26D21H27/30G10K11/168Y10T428/24942
    • This invention pertains to a layered sheet comprising a flame resistant 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 area weight of from 15 to 50 gsm, the bond strength between the refractory layer and the surface of the carrier is at least 0.25 lb/in, wherein the carrier comprises from 40 to 70 weight percent of aramid fibers and from 30 to 60 weight percent of polymeric binder, is hydrophilic, has a smoothness on at least one surface of no less than 250 Sheffield units, a thickness of from 0.025 to 0.175 mm and a density of from 0.25 to 0.60 g/cc. Preferably the carrier is in the form of a paper.
    • 本发明涉及一种层状片,其包括具有第一表面和第二表面的阻燃湿法非织造载体和与载体的至少一个表面相邻的无机耐火层,其中耐火层的干燥面积重量为15至50 gsm,耐火层和载体表面之间的粘合强度至少为0.25磅/英寸,其中载体包含40至70重量%的芳族聚酰胺纤维和30至60重量%的聚合粘合剂,是亲水的, 在至少一个不少于250个谢菲尔德单元的表面上具有平滑度,厚度为0.025至0.175mm,密度为0.25-0.60g / cc。 优选地,载体是纸的形式。