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US 11,378,222 B2Granted
Insulation product with inward curling closure flap
AssigneeJohns Manville
InventorsMonroe William Shumate, Derek Cooper Bristol
Life of this patent
Estimating the term…
Abstract
A pipe insulation product including a core of insulating material and a laminate surrounding the core and bonded to the core. The core may include an outer surface; an inner surface; and a wall extending between the outer and inner surfaces. The laminate may include a foil or metallized polymeric film sheet, a scrim, a porous media sheet, and a polymeric film sheet bonded together via an adhesive. The laminate may include a closure flap that is configured to adhesively seal opposite ends of the laminate together to form a cylindrical tube with the core enclosed therein. The closure flap may be configured to include a curl that provides a greater closure flap adhesive seal.
Claims11
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 having a radially extending thickness and 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;
- and
- 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 he opened, placed about a pipe, and closed without degrading the laminate, wherein the laminate comprises:
- a polymeric film sheet forming an outer exposed layer of the laminate;
- a foil or metallized polymeric sheet material forming an inner layer of the laminate and providing a fluid vapor harrier to minimize fluid vapor transmission through the laminate;
- a porous media sheet being positioned immediately adjacent to the foil or metallized polymeric film sheet so that the foil or metallized polymeric film sheet lies substantially flat against the porous media sheet;
- and the corfiguration of the substantially flat foil or metallized polymeric film sheet provides an improved perm rating for the laminate;
- a scrim comprising a mesh of a plurality of fibers, wherein the scrim is disposed between the porous media sheet and the polymeric film 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
- the closure flap is formed to have a concave shape prior to installation of the pipe insulation product to provide a greater closure flap seal.
16 more elements
The pipe insulation product of claim. 1, wherein an amount of tension in the polymeric film sheet is different than an amount of tension in one or more of the other layers.
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 having a. radially extending thickness and 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;
- and
- 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, wherein the laminate comprises:
- a polymeric film sheet forming an outer exposed layer of the laminate;
- a foil or metallized polymeric sheet material forming an inner layer of the laminate and providing a fluid vapor barrier to minimize fluid vapor transmission through the laminate;
- a porous media sheet positioned immediately adjacent to the foil or metallized polymeric film sheet so that the foil or metallized polymeric film sheet lies substantially flat against the porous media sheet;
- and the configuration of the substantially flat foil or metallized polymeric film sheet provides an perm rating for the laminate;
- a scrim comprising a mesh of a plurality of fibers, wherein the scrim is disposed between the porous media sheet and the polymeric film 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
- an amount of tension in the polymeric film sheet different than an amount of tension in one or more of the other layers of the laminate such that the closure flap is concave to provide a greater closure flap seal.
16 more elements
Dependencies are inferred from the claim text.