Pipe insulation and method of and system for making same

Patent metadata

Field	Value
Publication number	US-11428361-B2
Application number	US-201816234817-A
Country	US
Kind code	B2
Filing date	Dec 28, 2018
Priority date	Dec 29, 2017
Publication date	Aug 30, 2022
Grant date	Aug 30, 2022

Abstract

Methods of and systems for forming pipe insulation are disclosed. The pipe insulation has properties that are non-homogenous through its thickness.

First claim

The invention claimed is:

1. A pipe insulation comprising:
an elongated hollow cylinder of insulation material comprising a plurality of fibers, the insulation material having a thickness oft inches extending from an inner surface of the cylinder to an outer surface of the cylinder,
wherein a property of the insulation material in a first region of the cylinder differs from the property of the insulation material in a second region of the cylinder,
wherein the first region of the cylinder comprises a plurality of adjacent first layers of the insulation material, each of the first layers having the same property,
wherein the second region of the cylinder comprises a plurality of adjacent second layers of the insulation material, each of the second layers having the same property,
wherein the first region of the cylinder has a thickness of (t−x) inches,
wherein the second region of the cylinder has a thickness of (t−y) inches, and
wherein x+y=t.

2. The pipe insulation of claim 1 , wherein the elongated hollow cylinder has an inner cavity with a diameter in the range of 0.5 inches to 18 inches.

3. The pipe insulation of claim 1 , wherein the thickness t is within the range of 0.125 inches to 6 inches.

4. The pipe insulation of claim 1 , wherein the property of the insulation material is its color.

5. The pipe insulation of claim 1 , wherein the property of the insulation material is its R-value.

6. The pipe insulation of claim 1 , wherein the property of the insulation material is its density.

7. The pipe insulation of claim 1 , further comprising a jacket affixed to the outer surface of the cylinder.

8. The pipe insulation of claim 1 , wherein x≠y.

9. The pipe insulation of claim 1 , wherein a slit extends though the thickness t of the elongated hollow cylinder along a length of the cylinder.

10. The pipe insulation of claim 1 , wherein each of the first layers is a nonwoven fiberglass mat.

11. The pipe insulation of claim 10 , wherein each of the first layers has a thickness less than 0.5 inches.

12. The pipe insulation of claim 10 , wherein each of the first layers has the same thickness.

13. The pipe insulation of claim 10 , wherein each of the first layers has an area weight of less than 0.08 lb/ft 2 .

14. The pipe insulation of claim 1 , wherein each of the second layers is a nonwoven fiberglass mat.

15. The pipe insulation of claim 14 , wherein each of the second layers has a thickness less than 0.5 inches.

16. The pipe insulation of claim 14 , wherein each of the second layers has the same thickness.

17. The pipe insulation of claim 14 , wherein each of the second layers has an area weight of less than 0.08 lb/ft 2 .

18. The pipe insulation of claim 1 , wherein each of the first layers has the same thickness.

19. The pipe insulation of claim 1 , wherein a number of the first layers is equal to a number of the second layers.

20. The pipe insulation of claim 1 , wherein a total number of the first layers and the second layers is in the range of 4 to 16.

Assignees

• Owens Corning Intellectual Capital Llc

Inventors

• Gawryla Matthew D
• Clements Christopher J

Classifications

• B32B2262/103

  Metal fibres · CPC title

• B32B5/02

  characterised by structural features of a {fibrous or filamentary} layer {(layer formed of metallic wires B32B15/02; layer formed of natural mineral fibres B32B19/02; layer formed of wood fibres B32B21/02)} · CPC title

• F16L59/027 Primary

  Bands, cords, strips or the like for helically winding around a cylindrical object · CPC title

• B32B5/022

  Non-woven fabric · CPC title

• B32B2307/402

  Coloured · CPC title