AU2012201247A1 - High Temperature Reflective Insulation Sheeting - Google Patents
High Temperature Reflective Insulation Sheeting Download PDFInfo
- Publication number
- AU2012201247A1 AU2012201247A1 AU2012201247A AU2012201247A AU2012201247A1 AU 2012201247 A1 AU2012201247 A1 AU 2012201247A1 AU 2012201247 A AU2012201247 A AU 2012201247A AU 2012201247 A AU2012201247 A AU 2012201247A AU 2012201247 A1 AU2012201247 A1 AU 2012201247A1
- Authority
- AU
- Australia
- Prior art keywords
- layer
- reflective
- insulation sheeting
- insulation
- sheeting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000009413 insulation Methods 0.000 title claims abstract description 77
- 239000011521 glass Substances 0.000 claims abstract description 15
- 239000011152 fibreglass Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 12
- 239000000853 adhesive Substances 0.000 claims description 10
- 239000004411 aluminium Substances 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- 230000001070 adhesive effect Effects 0.000 claims description 8
- 239000002655 kraft paper Substances 0.000 claims description 8
- 239000011888 foil Substances 0.000 claims description 7
- 239000000123 paper Substances 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 claims 4
- 230000004888 barrier function Effects 0.000 abstract description 11
- 230000035515 penetration Effects 0.000 abstract description 6
- 238000005304 joining Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 24
- 239000011162 core material Substances 0.000 description 20
- 239000005030 aluminium foil Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000011491 glass wool Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000012792 core layer Substances 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 3
- 230000004313 glare Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009435 building construction Methods 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 230000009970 fire resistant effect Effects 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- 241000283984 Rodentia Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Landscapes
- Building Environments (AREA)
Abstract
Abstract High temperature thermo-reflective insulation sheeting. The sheeting includes two reflective laminate layers encapsulating a core of totally non-combustible and high temperature rated E-glass felt. The longitudinal edges of both reflective laminates are bonded together to totally encapsulate the core and provide specially designed overlap tabs for joining sheetings. The high temperature E-glass felt core is designed to provide a barrier to fire penetration through a building's exterior skin during a bushfire or other fire event. Page 1 of 5 Figure 1
Description
Specification Field of the Invention: This invention relates to insulation, and more particularly insulation sheeting. The invention has been devised particularly, although not necessarily solely, for insulating buildings and other structures in bushfire prone areas or otherwise those with advanced needs for fire safety. Accordingly, the invention also relates to a building construction incorporating the insulation sheeting. Background Art Bushfires are a significant safety and economic problem in Australia and other places around the world including locations in North America and Europe where the climate can become hot and dry - climate zones in which thermo-reflective insulations are ideal and where their use is widespread. There are various types of thermo-reflective insulations which are currently available for buildings. In a typical building application, the thermo-reflective insulation is installed around the exterior skin of a building including behind the external cladding of perimeter walls and directly under roof sheeting. An example of thermo-reflective insulation sheeting is disclosed in the Applicant's Australian Innovation patent 2003100663. Such insulating sheeting comprises a single layer closed cell core structure interposed between two outer layers, at least one of which comprises a highly reflective aluminium foil. This insulation sheeting has proved to be a particularly effective barrier in reducing energy transfer, the closed cell structure serving to reduce the amount of heat transferred through convection and conduction, and the reflective foil layer serving to reduce heat transfer through radiation. The closed cell core structure of the aforementioned example is typically a polymer based bubble or foam material. The layers of this reflective insulation composite material are typically heat laminated together into a single construction. Though these core materials typically have flame retardant additives added to their petrochemical constructions, they still remain highly flammable. There is also a thermo-reflective insulation sheeting which features a glass wool insulation core bonded between two reflective layers. The core of this insulation sheeting is non-combustible, though it has a low service temperature, ensuring it breaks down and disintegrates at long before temperatures approach those in a bushfire event. There is a need for a reflective insulation assembly which can be installed around the exterior skin of a building and directly behind wall cladding and roof sheeting that features a core material that is not only non-combustible, but also capable of withstanding extreme high temperatures to act as a fire barrier and provide a barrier to the penetration of fire through a building's exterior skin. In the event of a bushfire, such reflective sheeting may provide the building occupants with some crucial extra time to evacuate to safety and may assist the structure in withstanding the bushfire event.
This is beneficial compared to prior art thermo-reflective insulation sheeting; all of which easily melt, shrink or disintegrate when in contact with fire - allowing the fire to easily penetrate through the building's exterior skin. It is also beneficial that this insulation sheeting can exceed the performance of existing thermo reflective insulation sheetings in other categories such as thermal resistance and acoustics. Disclosure of Invention The present invention concerns thermo-reflective insulation sheeting capable of inhibiting or significantly impeding the penetration of fire through a building's exterior skin. The reflective insulation sheeting includes a core layer of totally non-combustible, heat & flame resistant, high density needled E Glass felt (hereinafter referred to as 'E-Glass Felt'), which is fully encapsulated by layers of fire retardant aluminium reflective laminates on both sides. Preferably, the reflective laminates can be bonded to each side either by a layer of hot melt glue or a scattering process with thermoplastic powder. To elaborate on the point of encapsulation; the aluminium reflective laminates which feature on both sides of the insulation sheeting extend beyond the central core along the length of the sheeting and bond directly to each other at these edges - effectively encapsulating the E-Glass Felt core along its full longitudinal length. Thermo-reflective insulation sheeting materials are often intended to provide the secondary benefit of providing a vapour barrier. Current Australian Building Codes call for joined thermo-reflective sheetings to be overlapped a minimum of between 50mm and 150mm (depending on the building application) when installed around the external skin of a building. The width of the aforementioned bonded edges created during encapsulation of said invention can be designed to satisfy the minimum overlap requirements of local building codes. By overlapping the bonded edges only, rather than the full composite material as is the norm with prior art thermo reflective insulation sheeting - significant material cost savings can be achieved for installers. The E-Glass felt core of the present invention is advantageous as it is non-combustible and thus will not burn. It is high-temperature rated and will withstand continuous exposure to temperatures in excess of 550*C. It begins to soften at 815*C and melts near 1120*C. In comparison, typical bushfire conditions see air temperatures of 800*C for periods of up to 120 seconds. Thus for typical bushfire events, the E-Glass felt core will begin to soften and disintegrate but should not break down completely - continuing to provide a barrier to fire penetration through a building's exterior skin. Compare this to petrochemical based foam, bubble and glass wool cored insulation of prior art reflective insulation sheeting which all immediately begin to shrink or disintegrate when in contact with fire; allowing the fire event to easily penetrate through these materials and thus through the building's exterior skin.
The reflective insulation system of the present invention also has many additional advantages over prior art reflective insulation sheetings. The reflective insulation sheeting of said invention has a significantly higher mass per unit area and a larger quantity of tiny, interconnected voids in its core than prior art insulation sheetings. This is due to its very high density E-Glass Felt core. More voids provide a larger scope for sound waves to lose energy through friction as they travel through the insulation sheeting; resulting in superior sound attenuation properties. Further, by virtue of its higher density, the E-Glass felt core better impedes the penetration of low to medium frequency sound waves that pass through it. It is worth noting that the core materials of prior art reflective insulation sheetings are unable to approach the density E-Glass felt whilst remaining sufficiently flexible to be used in roll form. The reflective insulation sheeting of said invention, again due to the aforementioned plurality of tiny voids found in the E-Glass Felt core, has amongst the lowest thermal conductivities available for flexible insulation sheetings. This ensures that the R-Value per thickness of said invention is superior to prior art reflective insulation sheetings (albeit those which are foam core based can approach similar levels of thermal performance). Many additional features, advantages and a fuller understanding of the invention will be had from the accompanying drawings and detailed description as follows. Brief Description of the Drawings The invention will be better understood by reference to the following description of the specific preferred embodiment thereof as shown in the accompanying drawings in which: Fig.1 is an exploded perspective view of a first embodiment thermo-reflective insulation system shown in cross-section; Fig.2 is an exploded perspective view of a third embodiment thermo-reflective insulation system shown in cross-section; Fig.3 is a perspective view of a thermo-reflective insulation system shown in cross-section; Fig.4 is a perspective view of a thermo-reflective insulation system and its bonded tab edge system for overlapping multiple sheets shown in cross-section; Fig.5 is an exploded perspective view of a thermo-reflective insulation system and its 'self adhesive' bonded tab edge shown in cross-section; Fig.6 is a perspective view of a thermo-reflective insulation system and its 'self-adhesive' bonded tab edge system for overlapping multiple sheets shown in cross-section; Best Mode(s) for Carrying Out the Invention Referring to Figure 1 of the drawings, there is shown insulation sheeting 10 according to the first embodiment. The insulation sheeting 10 comprises two outer layers, 11, 12, and an E-glass needled felt core layer, 13 bonded therebetween. Each outer layer, 11, 12, has an outer surface 24 (not noted in the drawings). The sheeting 10 is of a thickness between the outer surfaces 24 which allows the sheeting to be disposed in a rolled configuration and also unrolled to assume a substantially flat configuration. The thickness can be up to about 15mm for typical applications. In one typical application the thickness is about 7mm. The outer layers 11, 12 each comprises of a laminate that includes a layer of aluminium foil, a layer of fiberglass scrim material, and a layer of Kraft material. In the exemplary embodiment, the aluminium foil layer is 99.5% pure with a 7 micron thickness. The layer of fiberglass scrim is tri-directional that reinforces the vapour barrier and enhances the tensile strength of the insulation sheeting, allowing it to be installed over large spans in a building construction. The reinforcement also provides greater tear strength. The Kraft material is bonded to the scrim material and the foil by a flame resistant adhesive. In a second embodiment, the vapour barrier 11, 12, comprise of a laminate that includes a layer of aluminium foil with a layer of fiberglass weave bonded together with a fire resistant adhesive. The layer of fiberglass weave has superior tensile and tear strength compared to the foil-scrim-Kraft laminate mentioned in the exemplary embodiment. The outer layers 11, 12 can be applied to the E-glass needled felt core layer in any appropriate way. Two particularly suitable ways involve a hot melt lamination process and a scatter coating lamination process. The high density, non-combustible E-glass needled felt core, 13, comprises of fibres which will not burn and will withstand continuous exposure to temperatures in excess of 550*C. It begins to soften at 815*C and melts near 1120*C. In comparison, typical bushfire conditions see air temperatures of 800*C for periods of up to 120 seconds. Thus for typical bushfire events, the E-Glass felt core will begin to soften and disintegrate but should not break down completely - continuing to provide a barrier to fire penetration through a building's exterior skin (where such thermo-reflective insulation sheetings are designed to be installed) The fibres of the E-glass needled felt are mechanically bonded, as opposed to the chemical binders used in traditional glass wool - eliminating many of the health and safety concerns associated with traditional glass wool. Preferably, the density of the needled felt is between 100kg/m 3 and 120kg/m 3 . This is advantageous as it provides the insulation assembly with much enhanced thermal and acoustic insulation characteristics as well as greater resistance to heat and flame compared to lower densities. The insulation sheeting including the E-glass needled felt core will not promote growth of fungi or bacteria and does not provide a nesting medium for rodents and insects.
The outer surface 24 of one of the layers 11, 12 may be treated to provide some glare reduction while retaining heat reflective characteristics. Glare reduction can be particularly desirable on construction sites where the sheeting may be exposed for some time so creating a glare problem for persons in the vicinity. The insulation sheeting according to the first embodiment has a material thermal resistance of RO.23m 2 K/W (+/- .035m 2 K/W) In addition to providing a barrier to heat transfer, the sheeting 10 according to the first embodiment also provides a barrier to air and water vapour. There are certain situations where it is desirable that insulation sheeting have some permeability to air and water vapour so as to reduce the risk of moisture damage due to condensation. The insulation sheeting according to a third embodiment seeks to provide such insulation sheeting. Referring now to Figure 2, the insulation sheeting according to the third embodiment is similar in many respects to the insulation sheeting according to the first embodiment and so corresponding reference numerals are used to identify corresponding parts. In the third embodiment, however, the insulation sheeting is provided with permeability to air and water vapour. In this regard, the insulation sheeting has a plurality of perforations 25 through the two outer surfaces 24 and layers 11, 12. There is no need for the perforations to extend through the E-Glass needled felt core 13 as it is by default permeable to air and water vapour. The perforations 25 comprise holes formed by piercing the outer layers 11 and 12 with a perforating tool and are supplied already perforated from the manufacturer, eliminating the need for a separate online or offline perforating stage during manufacture of the insulation sheeting. The outer layers 11, 12 in the third embodiment are exactly similar to those described in the first and second embodiment, comprising of a laminate of aluminium foil, fiberglass tri-directional scrim and Kraft or a laminate of aluminium foil with a fiberglass weave. In both cases, the laminates are bonded by a fire resistant adhesive. The only difference between these aforementioned laminate surfaces 11, 12 and those found in the third embodiment is that they have been perforated by the manufacturer. The spacing and size of perforations is designed to achieve a low classification for resistance to water vapour transmission under AS/NZS4200.1. Referring to Figure 3 now, the outer layers 11, 12 are bonded directly to each other along their longitudinal length on both sides to create tab edges along both lengths, 14. The tab edges can have a width between 10mm to 150mm on each side. In the case of a 10mm tab edge, this is a minimum to ensure sufficient bonding strength between 11, 12 to guarantee durability of the encapsulation system. In the first embodiment the tab edges total 150mm (Figure 4) to satisfy overlap requirements for commercial construction. In another embodiment, the tab edges could be 50mm each for use as flanges to install the insulation sheeting directly between joists.
In yet another embodiment, one tab edge could be 10mm and the other 50mm (Figure 6) with a self adhesive strip 15 attached to the 50mm tab edge. This self-adhesive strip would consist of a 30-50mm wide layer of suitable adhesive applied directly to the outer surface of one side of the 50mm tab edge, and covered with a suitable silicone coated release paper 16. This embodiment would satisfy the Australian standard for residential installation requiring a 50mm overlap if joints are to be taped. In this embodiment, cost savings will be realised for both avoiding an overlap of the composite material and avoiding the need for additional reflective joining tape. Modifications and changes especially in regards to dimensions can be made without departing from the scope of the invention.
Claims (20)
1. Insulation sheeting comprising a layer of needled E-glass felt interposed between two outer layers.
2. Insulation sheeting of claim 1 wherein at least one of the outer layers is reflective.
3. Insulation sheeting according to any one of the preceding claims in which at least one of the outer layers comprises reflective foil.
4. The insulation sheeting according to claim 3 wherein said reflective foil comprises a laminate containing a layer of Aluminium, a layer of fiberglass reinforcing scrim, and a layer of Kraft material.
5. The insulation sheeting according to claim 3 wherein said reflective foil comprises a laminate containing a layer of Aluminium and a layer of fiberglass weave.
6. Insulation sheeting according to any one of claims 2 to 5 wherein the other outer layer is reflective.
7. Insulation sheeting of claim 6 wherein said reflective layer comprises a laminate containing a layer of Aluminium, a layer of fiberglass reinforcing scrim, and a layer of Kraft material.
8. Insulation sheeting of claim 6 wherein said reflective layer comprises a laminate containing a layer of Aluminium and a layer of fiberglass weave.
9. Insulation sheeting according to claim 1 wherein the depth of the needled E-glass felt layer is between 3mm and 20mm.
10. The insulation sheeting according to claim 3 wherein said reflective foil comprises a perforated laminate containing a layer of Aluminium, a layer of fiberglass reinforcing scrim, and a layer of Kraft material.
11. The insulation sheeting according to claim 3 wherein said reflective foil comprises a perforated laminate containing a layer of Aluminium and a layer of fiberglass weave.
12. Insulation sheeting according to any one of claims 2, 3, 10 and 11 wherein the other outer layer is reflective.
13. Insulation sheeting of claim 12 wherein said reflective layer comprises a perforated laminate containing a layer of Aluminium, a layer of fiberglass reinforcing scrim, and a layer of Kraft material.
14. Insulation sheeting of claim 12 wherein said reflective layer comprises a perforated laminate containing a layer of Aluminium and a layer of fiberglass weave.
15. Insulation sheeting according to claim 1 wherein the longitudinal edges of the outer layers are bonded together.
16. Insulation sheeting according to claim 15 wherein said bonded edges total 150mm in width
17. Insulation sheeting according to claim 15 wherein said bonded edges total between 50mm and 60mm.
18. Insulation sheeting according to any one of claims 15 to 17 where one of said bonded edges features an adhesive strip covered with release paper.
19. Insulation sheeting according to claim 18 where said adhesive strip is between 25-50mm in width.
20. Insulation sheeting substantially as herein described with reference to the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2012201247A AU2012201247A1 (en) | 2012-03-01 | 2012-03-01 | High Temperature Reflective Insulation Sheeting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2012201247A AU2012201247A1 (en) | 2012-03-01 | 2012-03-01 | High Temperature Reflective Insulation Sheeting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2012201247A1 true AU2012201247A1 (en) | 2013-09-19 |
Family
ID=49165884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2012201247A Abandoned AU2012201247A1 (en) | 2012-03-01 | 2012-03-01 | High Temperature Reflective Insulation Sheeting |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU2012201247A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835462A (en) * | 2014-02-20 | 2014-06-04 | 厦门信英进出口有限公司 | Fireproof acoustic board and manufacturing process thereof |
| GB2540793A (en) * | 2015-07-28 | 2017-02-01 | Thermotec Roofing Systems Ltd | Building panel and method of manufacture |
-
2012
- 2012-03-01 AU AU2012201247A patent/AU2012201247A1/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835462A (en) * | 2014-02-20 | 2014-06-04 | 厦门信英进出口有限公司 | Fireproof acoustic board and manufacturing process thereof |
| GB2540793A (en) * | 2015-07-28 | 2017-02-01 | Thermotec Roofing Systems Ltd | Building panel and method of manufacture |
| GB2540793B (en) * | 2015-07-28 | 2017-09-06 | Thermotec Roofing Systems Ltd | Building panel and method of manufacture |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6357504B1 (en) | Technology for attaching facing system to insulation product | |
| CA2332852C (en) | Facing system for an insulation product | |
| US20120021172A1 (en) | Foil-Backed Wallboard and Insulation System | |
| US20180080223A1 (en) | Building insulation system | |
| CN101495703A (en) | Perforated sheeting | |
| EA012734B1 (en) | PANEL HEATER | |
| CA2379679A1 (en) | Metal building insulation assembly | |
| WO2007082559A1 (en) | Insulation material comprising phase change material (pcm) for buildings | |
| CN103124820A (en) | Low-E housing cladding materials | |
| US20180320368A1 (en) | Thermal insulating construction wrap and methods for same | |
| CA2617021C (en) | Composite insulated building panel | |
| KR20200023125A (en) | A method of manufacturing a composite insulation with built - in ceramic fiber improved flame spread prevention function and a composite insulation manufactured by the method | |
| KR20190030497A (en) | Insulation material of building and the manufacturing of the same | |
| US9624663B2 (en) | Thermal barrier in building structures | |
| EP2256265A2 (en) | Insulated multilayer sandwich panel | |
| EP4339386A1 (en) | Fabricated leveling composite radiation energy-saving concrete wall and construction method therefor | |
| AU2012201247A1 (en) | High Temperature Reflective Insulation Sheeting | |
| WO2007082558A1 (en) | Insulation material comprising reflection material for buildings | |
| CN101506441B (en) | Exterior wall | |
| EP2210991B1 (en) | External wall insulation system | |
| WO2004109025A1 (en) | Thermal insulation sheet and method of manufacturing the same | |
| CN113089858A (en) | Anti-radiation aerogel composite coiled material and application method thereof in wall | |
| US11788279B1 (en) | Composite insulation batt | |
| JP4309899B2 (en) | Insulation for outer joints such as steel columns and heat insulation structure using the same | |
| US11111665B2 (en) | Composite insulation batt |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK4 | Application lapsed section 142(2)(d) - no continuation fee paid for the application |