Composite comprising a nonwoven vapor permeable sheet
AssigneeDupont Safety & Construction, Inc.
InventorsNoel Stephen Brabbs, Eric Huebsch, Norbert Frey
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Abstract
A composite laminate comprising at least one moisture vapor permeable nonwoven sheet having first and second surfaces and a fluorinated polymeric coating on the first surface of the sheet wherein (i) the fluorinated polymeric coating is present in an amount such that the total fluorine content of the coated non-woven sheet is 0.05 to no greater than 0.4 gsm, and (ii) the composite laminate, after exposure to wet timber, exhibits a retained hydrohead of at least 60 percent.
Claims8
A composite laminate comprising at least one moisture vapor permeable nonwoven sheet having first and second surfaces and a fluorinated continuous polymeric coating on the first surface of the sheet wherein
- (i) the fluorinated polymeric coating is present in an amount such that the total fluorine content of the coated non-woven sheet is from 0.05 gsm to no greater than 0.4 gsm, and
- (ii) the composite laminate, after exposure to wet timber, exhibits a retained hydrohead of at least 60 percent when tested according to Test Method A.
Dependencies are inferred from the claim text.