High temperature flexible blanket for industrial insulation applications

Patent metadata

Field	Value
Publication number	US-2016265709-A1
Application number	US-201514642492-A
Country	US
Kind code	A1
Filing date	Mar 9, 2015
Priority date	Mar 9, 2015
Publication date	Sep 15, 2016
Grant date	—

Abstract

According to one embodiment, an insulation blanket for insulating a structure includes a first facer layer and a second facer layer. A plurality of intermeshed non-woven glass fibers are disposed between the first and second facer layers and a fumed silica insulating powder is also disposed between the first and second facer layers. The fumed silica insulating powder has an average particle size of between about 2 and 20 nanometers. The insulation blanket includes at least one exposed edge having a cauterized face that forms a barrier on the exposed edge to encase the fumed silica insulating powder within the interior of the insulation blanket, which minimizes degradation of the insulating value due to loss or shedding of the fumed silica insulating powder through the exposed edge. The cauterized edge has a depth of cauterized material of between about 0.05 mm and 3 mm.

First claim

What is claimed is:

1 . An insulation blanket for insulating a structure comprising:
a first facer layer; a second facer layer; a plurality of intermeshed non-woven glass fibers disposed between the first and second facer layers; and a fumed silica insulating powder disposed between the first and second facer layers and within the intermeshed non-woven glass fibers, the fumed silica insulating powder having an average particle size of between about 2 and 20 nanometers; wherein the insulation blanket includes at least one exposed edge having a cauterized face that is roughly orthogonal to the first and second facer layers, the cauterized face forming a barrier on the exposed edge that encases the fumed silica insulating powder within the interior of the insulation blanket thereby minimizing degradation of the insulating value due to loss or shedding of the fumed silica insulating powder through the exposed edge, the cauterized edge having a depth of cauterized material of between about 0.05 and 3 mm.

2 . The insulation blanket of claim 1 , wherein at least 80% of the exposed edge is cauterized, but less than the entire exposed edge is cauterized.

3 . The insulation blanket of claim 2 , wherein at least 90% of the exposed edge is cauterized, but less than the entire exposed edge is cauterized.

4 . The insulation blanket of claim 1 , wherein the cauterized face forms a plurality of cauterized layers between the first and second facers.

5 . The insulation blanket of claim 1 , wherein either or both the first facer or the second facer is a woven glass mat facer.

6 . The insulation blanket of claim 1 , wherein the insulation blanket includes a plurality of exposed edges, and wherein each exposed edge has a cauterized face that forms a barrier that encases the fumed silica insulating powder within the interior of the insulation blanket.

7 . An insulation blanket for insulating a structure comprising:
a plurality of intermeshed non-woven fibers disposed between a first facer and a second facer; and a fine insulating powder disposed between the first and second facers and within the intermeshed non-woven fibers; wherein the insulation blanket includes at least one exposed edge having a cauterized face that forms a barrier on the exposed edge to encase the fine insulating powder within the interior of the insulation blanket thereby minimizing loss of the fine insulating powder through the exposed edge; and wherein the exposed edge has a depth of cauterized material of between about 0.05 and 3 mm.

8 . The insulation blanket of claim 7 , wherein at least 80% of the exposed edge is cauterized, but less than the entire exposed edge is cauterized.

9 . The insulation blanket of claim 8 , wherein at least 90% of the exposed edge is cauterized, but less than the entire exposed edge is cauterized.

10 . The insulation blanket of claim 7 , wherein the exposed edge has a plurality of cauterized layers between the first and second facers.

11 . The insulation blanket of claim 7 , wherein either or both the first facer or the second facer is a woven glass mat facer.

12 . The insulation blanket of claim 7 , wherein the fine insulating powder includes fumed silica.

13 . The insulation blanket of claim 7 , wherein the insulation blanket includes a plurality of exposed edges, and wherein each exposed edge has a cauterized face that forms a barrier to encase the fine insulating powder within the interior of the insulation blanket.

14 . A method of forming an insulation blanket comprising:
positioning a plurality of intermeshed non-woven fibers between a first facer layer and a second facer layer; positioning a fine insulating powder between the first and second facer layers and within the intermeshed non-woven fibers, the fine insulating powder having an average particle size of between about 2 and 20 nanometers; and cauterizing an exposed edge of the insulation blanket to form a barrier on the exposed edge that encases the fine insulating powder within the interior of the insulation blanket, the cauterized edge having a depth of cauterized material of between about 0.05 and 3 mm.

15 . The method of claim 14 , further comprising cutting the insulation blanket to form the exposed edge simultaneously with cauterizing the exposed edge.

16 . The method of claim 14 , wherein cauterizing the exposed edge of the insulation blanket comprises cutting the insulation blanket with a high temperature laser.

17 . The method of claim 14 , wherein cauterizing the exposed edge of the insulation blanket comprises exposing the exposed edge of the insulation blanket to a flame.

18 . The method of claim 14 , further comprising installing the insulation blanket on or about an object to be insulated.

19 . The method of claim 14 , wherein cauterizing the exposed edge comprises forming a plurality of cauterized layers on the exposed edge.

20 . The method of claim 14 , wherein cauterizing the exposed edge comprises cauterizing at least 80% of the exposed edge without cauterizing the entire exposed edge.

21 . The method of claim 20 , wherein cauterizing the exposed edge comprises cauterizing at least 90% of the exposed edge without cauterizing the entire exposed edge.

22 . The method of claim 14 , wherein the fine insulating powder includes fumed silica.

23 . The method of claim 14 , further comprising compressing the insulation blanket prior to cauterizing the exposed edge.

Assignees

• Johns Manville

Inventors

• Kulprathipanja Ames
• Bittner John

Classifications

• B32B2262/101

  Glass fibres · CPC title

• B32B17/00

  Layered products essentially comprising sheet glass, or glass, slag, or like fibres · CPC title

• F16L59/029 Primary

  layered · CPC title

• B32B2307/304

  Insulating · CPC title

• B32B2250/03

  3 layers · CPC title