High temperature flexible blanket for industrial insulation applications

Patent metadata

Field	Value
Publication number	US-10234069-B2
Application number	US-201514642492-A
Country	US
Kind code	B2
Filing date	Mar 9, 2015
Priority date	Mar 9, 2015
Publication date	Mar 19, 2019
Grant date	Mar 19, 2019

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 comprising fumed silica insulating powder and glass fibers that are melted and recrystallized to form 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 comprising melted and recrystallized insulating powder and fibers 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.

Assignees

• Johns Manville

Inventors

• Kulprathipanja Ames
• Bittner John

Classifications

• B32B2571/00

  Protective equipment · CPC title

• F16L59/04

  Arrangements using dry fillers, e.g. using slag wool · CPC title

• B32B27/12

  next to a fibrous or filamentary layer · CPC title

• B32B5/16

  characterised by features of a layer formed of particles, e.g. chips, powder {or granules (layer formed of natural mineral particles B32B19/00; layer being formed of wood fibres, chips or particles B32B21/02)} · CPC title

• B32B37/24

  with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate (B32B37/15 takes precedence) · CPC title