Patent ID: 11940082
Assignee: JOHNS MANVILLE
Field: Surface technology, coating (Chemistry)
Classification: CPC F  B  Y | IPC B  F

Claim 0:
1. A pipe insulation product comprising:
a tubular core of insulating material, wherein:
the tubular core comprises an outer surface and an inner surface;
the inner surface defines an open interior of the tubular core;
the tubular core defines a slit extending from the outer surface to the inner surface, the slit extending parallel to a longitudinal axis of the tubular core across a length of the tubular core; and
a laminate that is roughly rectangular in shape and that is coextensive with and bonded to an outer surface of the tubular core, wherein the laminate comprises:
a polymeric film sheet forming an outer exposed layer of the laminate;
a foil or metallized polymeric sheet material that provides a fluid vapor barrier to minimize fluid vapor transmission through the laminate;
a scrim comprising a mesh of a plurality of fibers;
a porous media sheet; and
an adhesive, wherein the adhesive bonds the foil or metallized polymeric sheet material, the scrim, the porous media sheet, and the polymeric film sheet together to form the roughly rectangular laminate, wherein:
the laminate comprises a closure flap configured to seal opposite sides of the laminate in a closed position so that the laminate forms a substantially cylindrical tube with at least a portion of the tubular core enclosed therein; and
one or both of tension and internal stress are greater in the polymeric sheet material than in the one or more of the other layers to cause the laminate to curl in the direction of the polymeric film sheet such that the closure flap is formed to have a convex shape relative to the tubular core prior to installation of the pipe insulation product.