Invention Grant
- Patent Title: Multilayered sheet
- Patent Title (中): 多层板材
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Application No.: US14386837Application Date: 2013-04-17
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Publication No.: US09441326B2Publication Date: 2016-09-13
- Inventor: Dariusz Wlodzimierz Kawka
- Applicant: E I DU PONT DE NEMOURS AND COMPANY
- Applicant Address: US DE Wilmington
- Assignee: E I DU PONT DE NEMOURS AND COMPANY
- Current Assignee: E I DU PONT DE NEMOURS AND COMPANY
- Current Assignee Address: US DE Wilmington
- International Application: PCT/US2013/036870 WO 20130417
- International Announcement: WO2013/158700 WO 20131024
- Main IPC: D21H19/12
- IPC: D21H19/12 ; D21H13/26 ; B32B5/02

Abstract:
This invention pertains to a layered sheet comprising a flame resistant wet-laid nonwoven paper having a first and second surface and an inorganic refractory layer adjacent to at least one surface of the paper 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 from 0.25 lb/in to 0.8 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 greater than 150 Sheffield units, a thickness of from 0.025 to 0.175 mm and a density of from 0.60 to 1.1 g/cc.
Public/Granted literature
- US20150050475A1 MULTILAYERED SHEET Public/Granted day:2015-02-19
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