The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 30, 2016
Filed:
Apr. 17, 2013
E I Du Pont DE Nemours and Company, Wilmington, DE (US);
Dariusz Wlodzimierz Kawka, Midlothian, VA (US);
E I DU PONT DE NEMOURS AND COMPANY, Wilmington, DE (US);
Abstract
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 area 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.