Patent ID: 8141594

Claim:
A pipe insulation product comprising: a tubular core of insulating material, the tubular core comprising: a length and a longitudinal axis; a substantially cylindrical outer surface; a substantially cylindrical inner surface; and a wall extending between the cylindrical outer surface and the cylindrical inner surface, the wall of the tubular core having a radially extending thickness, the wall of the tubular core having a slit extending completely there through, the slit extending parallel to the longitudinal axis of the tubular core for the length of the tubular core; a laminate that is roughly rectangular in shape and that is coextensive with and bonded to the substantially cylindrical outer surface of the tubular core and flexible so that the tubular core and laminate can be opened, placed about a pipe, and closed without degrading the laminate, the laminate comprising: a polymeric film sheet forming an outer exposed layer of the laminate; a foil or metallized polymeric film sheet, wherein the foil or metallized polymeric film sheet provides a fluid vapor barrier to minimize fluid vapor transmission through the laminate; a scrim comprising a mesh of a plurality of fibers; a paper media sheet, wherein the paper media sheet is between the range of 20 and 40 pounds per 3000 square feet; and an adhesive that bonds the polymeric film sheet, the foil or metallized polymeric film sheet, the scrim, and the paper media sheet together to form the laminate; wherein: the laminate comprises a closure flap configured to adhesively seal opposite sides of the laminate so that the laminate forms a substantially cylindrical tube with at least a portion of the tubular core enclosed therein; and the paper media sheet between the range of 20 and 40 pounds per 3000 square feet provides greater closure flap seal integrity without significantly reducing one or more beneficial properties of the laminate.