WO2006019318A1 - Matériau d’isolation thermique - Google Patents
Matériau d’isolation thermique Download PDFInfo
- Publication number
- WO2006019318A1 WO2006019318A1 PCT/NZ2005/000213 NZ2005000213W WO2006019318A1 WO 2006019318 A1 WO2006019318 A1 WO 2006019318A1 NZ 2005000213 W NZ2005000213 W NZ 2005000213W WO 2006019318 A1 WO2006019318 A1 WO 2006019318A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- thermal insulation
- product
- insulation product
- substrate
- adhesive
- Prior art date
Links
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/54—Yield strength; Tensile strength
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2419/00—Buildings or parts thereof
- B32B2419/04—Tiles for floors or walls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2607/00—Walls, panels
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
- E04B2001/7691—Heat reflecting layers or coatings
Definitions
- This invention relates to thermal insulation materials, a primary envisaged use being as insulation materials for use in insulating floors, walls, and/or roofs of domestic and commercial buildings.
- the invention comprises a sheet or roll product, though in other embodiments the invention comprises an insulating face for a building element.
- Other variations include insulating tapes, and insulating elements where a sheet is coupled with an alternative insulating material.
- the invention may also find use in practically any situation where thermal insulation is required, including the perishable goods packaging industry, and specialised applications.
- R value An accepted and well recognised measure of insulation performance of insulation materials in buildings is the "R value" which has units of m2K/W.
- An R value is effectively a measure of thermal resistance - the higher the value, the better the material's thermal insulation properties.
- padding or batting typically of a fibrous material such as glass fibre, which is a relatively efficient thermal insulation material.
- batting is highly labour intensive, while the contact of glass fibre batting with human skin can cause irritation to an installer.
- Batting has a thickness of the order of around 100mm, and in order to achieve a higher R value or insulation level with batting it is usually necessary to increase the thickness of the batting. This is not always possible, for example in confined spaces. For example, at a thickness of around 75mm fibreglass batting may have an R value of around 1.8 whereas a thickness of 190mm may provide an R value of around 5.
- batting and in ⁇ fills are restricted to voids within the framing, and do not address transmission which may occur through structural elements of the framing. Where metal framing is used, these losses may be significant, though little attention has been given to loss by conduction through wooden studs and elements. Hence, batting and in-fills provide only thermal insulation from heat loss through the voids in a wall or framing structure. Furthermore, batting provides little or no resistance to moisture ingress and has no structural strength.
- sarking is a waterproof laminated foil or paper material used in roofing, under the outer roofing.
- First generation sarking consisted of Kraft paper and bitumen.
- Second generation sarking consisted of Kraft paper, bitumen and aluminium foil.
- sarking included flame-retardant adhesives and different types of reinforcement fibres.
- An example of sarking material is the product sold under the trade mark SISALATION®, at least in New Zealand and Australia.
- R value thermal resistance
- Typical sarking typically has R values of between about 1.5 and about 2.5. It should be noted that the inclusion of conductive foils in sarking, while reflecting heat, also has the disadvantage of being an electrical conductor.
- thermal insulation material suitable for use in the building industry which is thin, easy to install in new and/or retro-fitted type installations, has a relatively high R value, is moisture resistant and/or is resistant to degradation from exposure to moisture, is economical to produce, has structural strength, or possesses a combination of at least two or more of these features.
- a thermal insulation product comprising: a metallised plastics film layer and a substrate which is absorbent to a moisture resistant adhesive, which is resistant to moisture after curing, said adhesive being used for bonding said metallised plasties film layer to a major face of the substrate, the arrangement being further characterised in that there is penetration of adhesive into the substrate to increase or supplement at least either or both of its surface and edge moisture resistance properties.
- thermo insulation product substantially as described above, in which the substrate is a sheet material.
- thermo insulation product substantially as described above, in which the substrate is a fibrous material.
- thermo insulation product substantially as described above, in which the substrate is a paper-based substrate layer containing cellulose fibres.
- thermo insulation product substantially as described above, in which the substrate has been treated to enhance its resistance to degradation by moisture.
- thermo insulation product substantially as described above, in which the treated substrate is absorptive to an adhesive which is water based.
- a thermal insulation product substantially as described above, in which the substrate comprises a maximum of 50% of recycled paper material.
- thermo insulation product substantially as described above, in which the recycled paper material substantially comprises recycled paper material that has been recycled only once.
- thermo insulation product substantially as described above, in which the substrate comprises substantially 100% virgin cellulose fibre.
- thermo insulation product substantially as described above, which includes a filler or binder material comprising at least one of clay, starch, and glue.
- thermo insulation product substantially as described above, in which there is present between 5% to 25% inclusive, by weight, of filler or binder material.
- thermal insulation product substantially as described above, in which the mass of the substrate layer is between 50gsm and 500gsm inclusive.
- thermo insulation product substantially as described above, in which the mass of the substrate layer is between lOOgsm and 200gsm inclusive.
- thermo insulation product substantially as described above, in which the metallised plastics film comprises a metallised polyester film.
- the plastics film of the metallised plastic film is metallised on one side, and either corona or chemically treated on the other side.
- thermo insulation product substantially as described above, in which the metallised plastics film layer has a thickness of between about lO ⁇ m and about 15 ⁇ m
- thermo insulation product substantially as described above, in which the mass of the metallised plastics film layer is between 15g/m 2 to 20g/m 2 inclusive.
- thermo insulation product substantially as described above, in which there is bonded to one side said substrate a reinforcing material.
- thermo insulation product substantially as described above, in which the reinforcing material is a fibrous or mesh material.
- the reinforcing material contains at least one of glass fibres, silk, or synthetic fibres.
- thermo insulation product substantially as described above, in which said fibres possess a high tensile strength.
- thermo insulation product substantially as described above, in which said reinforcing material is positioned between a said metallised plastics film layer and the substrate to which it is adhesively bonded.
- the adhesive is a water borne synthetic resin.
- thermo insulation product substantially as described above, in which the adhesive has a methacrylic acid base.
- thermo insulation product substantially as described above, which is a Poly (2-chloro-l ,3- butadiene/methacrylic acid) resin.
- thermo insulation product substantially as described above, in which between 4g/m2 to and 6g/m2 inclusive of adhesive is applied between a metallised plastics film layer and substrate.
- thermo insulation product substantially as described above, in which there is adhesively bonded a metallised plastics film layer to both alternate major faces of a substrate.
- thermal insulation product substantially as described above, which is permeable to water vapour.
- thermo insulation product substantially as described above, in which at least the metallised plastics film layers are perforated. According to another aspect of the present invention there is provided a thermal insulation product, substantially as described above, in which at least some of said perforations are micro-perforations.
- thermo insulation product substantially as described above, in which the average diameter of the micro- perforations is 20 microns or less.
- thermo insulation product substantially as described above, in which the maximum diameter of a micro- perforation is 125 mils.
- thermo insulation product substantially as described above, in which there is adhesively bonded a metallised plastics film layer to both alternate major faces of a central substrate.
- thermo insulation product substantially as described above, which comprises multiple alternating bonded layers of metallised plastics film and substrate, there optionally being reinforcing materials included within the structure.
- thermal insulation product substantially as described above, in which said product is in roll form.
- thermo insulation product substantially as described above, which is bonded to a building element.
- thermal insulation product substantially as described above, in which said building element comprises a gypsum type wall board.
- a thermal insulation product substantially as described above, in which said building element comprises a member of a group comprising: a concrete block, a brick, a construction block, a prefabricated concrete structure, a tile, a ceiling tile, a flooring tile, a wall tile.
- a thermal insulation product substantially as described above, in which said building element comprises a member of the group comprising: a wall board, a shower-lining board, a construction board, a sheet of plywood, a board of reconstituted wood or fibre material, a glass panel, a plaster board or sheet, a fibrous cement board or sheet, a sheet of plastics laminate, a metal sheet, a board of at least part metal construction.
- a thermal insulation product substantially as described above, in which said building element comprises a member of the group comprising: a door, a door panel, a wall panel, a floor panel, a ceiling panel, a panel of semi-hollow or hollow construction.
- a thermal insulation product substantially as described above, in which said building element comprises a member of the group comprising: a length of timber, a timber board, a prefabricated interlocking timber construction element, a timber lining material.
- thermo insulation product substantially as described above, which is attached to a supplementary insulating material.
- a thermal insulation product substantially as described above, in which the insulating material comprises a member of the group comprising: a panel or sheet of an expanded polystyrene, a panel or sheet of an expanded insulating material, a panel or sheet of an expanded fibrous or spun material, a batt of an expanded fibrous material, a batt of an expanded glass fibre insulating material.
- the stiffening element is a sheet of a material.
- thermo insulation product substantially as described above, in which the arrangement of components comprises at least one of: a said stiffening element is intermediate the supplementary insulating material and a thermal insulation product as substantially as described above; a thermal insulation product as substantially as described above, is intermediate the stiffening element and supplementary insulating material.
- thermo insulation product in the form of an adhesive tape or sheet, said tape or sheet comprising a thermal insulating product substantially as described above in combination with a tacky or activatable adhesive layer.
- thermal insulation product substantially as described above, in which there is an intermediate protective layer between the tacky or activatable adhesive layer and the thermal insulating product substantially as described above.
- thermo insulation product substantially as described above, in which there is a removable backing layer protecting the tacky or activatable adhesive layer.
- thermo insulation product substantially as described above, in which there is an intermediate heat shielding layer between the tacky or activatable adhesive layer and the thermal insulating product substantially as described above.
- thermo insulation product substantially as described above, when used as a lagging for pipes or conduits.
- thermo insulation product substantially as described above, when used in either of both of building construction or renovations.
- thermo insulation product substantially as described above, which is manufactured by lamination in a continuous strip.
- a method of manufacturing a thermal insulating product comprising: feeding continuous lengths of substrate and of metallised plastics film to a laminator and adhesively laminating the metallised plastics film to the substrate to form a continuous strip of thermal insulation material.
- a method substantially as described above, in which heated rollers are used to assist curing of the adhesive.
- a method substantially as described above, in which the lamination process is operated to produce a thermal insulating product at a linear speed of between lOOm/min and 500m/min inclusive.
- a method of manufacturing a thermal insulating product comprising introducing to either or both of a metallised plastics film layer and a substrate which is absorbent to a moisture resistant adhesive, a curable moisture resistant adhesive for bonding same; said layers then being brought into close face to face contact such that there is penetration of adhesive into the substrate to increase or enhance at least either or both of its surface and edge moisture resistance properties, curing of the adhesive being optionally accelerated by heating.
- a fibre based substrate typically a paper based substrate due to availability, and existing knowledge in relation to using such materials in a lamination process.
- a water-based adhesive will bond well to the cellulose fibres within a paper-based substrate but upon the application of water to the product (particularly at the edges), delamination will normally occur by weakening or breaking the bonds between the cellulose fibres and the adhesive.
- This is also applicable for synthetic papers when non-cellulose fibres may be present.
- the treatment of a paper-based substrate layer increases the ability of at least some of the cellulose fibres (the treatment may be applied to all or only a constituent of the substrate) to absorb and retain adhesive (even when exposed to moisture)..
- the present invention comprises a thermal insulation product which comprises a metallised plastics film layer bonded to a substrate.
- This substrate should be absorbent to the bonding adhesive used for laminating the film layer to the substrate.
- the absorbency should be such that there is penetration into the substrate, at least on the face to which the film layer is bonded, and ideally sufficient to provide some edge resistance to moisture if the product is cut.
- the ability to resist moisture, and the unwanted consequential effects of blistering or delamination arising from moisture degradation, is important in the present invention. In the present invention this is accomplished by the use of either, and preferably both, of two techniques.
- the first is to utilise a bonding adhesive which, when cured, is moisture proof or moisture resistant - in this specification the term 'moisture resistant' shall also include: moisture proof, water-proof, and water resistant.
- this bonding adhesive needs to be compatible with the substrate to ensure penetration into the substrate sufficient for the bonding adhesive to impart at least some of its moisture resistant properties to the substrate itself.
- the second technique is to utilise a substrate which is moisture resistant, or includes some such properties.
- the use of both techniques is therefore adopted in preferred embodiments of the present invention.
- preferred embodiments of the present invention rely on less aggressive bonding adhesives to maximise compatibility between the components over the long period normally expected for the lifetime of an insulating product. These less aggressive bonding adhesives tend to be water or aqueous based, which can sometimes be problematic in terms of their adhesion to highly water resistant substrates. This again introduces considerations of compatibility between the substrate and bonding adhesive.
- the substrate is paper based, though ideally has been treated to have some inherent properties of moisture resistance, or resistance to degradation by exposure to moisture.
- the preferred bonding adhesive which penetrates into the structure of this substrate, increases the resulting moisture resistance of the product.
- the degree of moisture resistance, choice of substrate, and choice and depth of adhesive penetration will vary among different embodiments. In dry and warm environments exposure to moisture may be limited, and thus only moderate to high moisture resistance may need to be considered. However, other applications may be in more demanding conditions where condensation arising from significant fluctuations in temperature, and high relative humidity, require higher moisture resistance in a product. The expected lifetime of the product will also affect choices made during fabrication. Some specific examples and choices will be given later in this specification.
- the product may take a number of forms, though the following section shall refer to the most common type of embodiments - the sheet or roll form.
- the nature of the product is largely determined by the parameters of the substrate - a thicker or thinner substrate determining largely the thickness and nature of the product. While a wide range of thicknesses may be used, the inventor considers that a standard insulating sheet for construction use is best served by a sheet substrate base typically within the range of 50gsm to 500gsm inclusive, and more ideally within the lOOgsm to 200 gsm range (inclusive).
- the metallised plastics film is preferably a metallised polyester film, though other film choices may be made. Breathable films, and films which allow water vapour to pass, may also be considered for more specialised embodiments of the present invention.
- the metallised film is typically prepared by the application of a thin metal layer to at least one side. Such films are known, as are their specific properties and methods of manufacture - so shall not be repeated here.
- One side of the metallised plastics film may be modified to improve adhesion to a bonding adhesive.
- Particular treatments include corona treatment, chemical treatment, etching and surface roughening by various methods.
- the metallised plastics film may be applied to either or both sides of the substrate.
- a metallised plastics film will be applied to both sides of the substrate.
- the metallised plastics film is more likely to be attached to only one side of a substrate where that substrate is to be bonded to something else, such as a building element.
- More complicated structures comprising multiple alternating layers of substrate and metallised plastics films may also be constructed for more specialised applications.
- a metallised plastic film may be applied to either or both outermost faces of the laminate, depending on how it is to be used.
- Reinforcing may also be included into products of the present invention. While this may be included within the substrate itself, it is more common for reinforcing to be positioned between a metallised film layer and substrate, typically being introduced during the manufacturing process.
- Preferred reinforcing comprises fibres, threads or cords, filaments, mats or meshes, etc. and may be of a variety of materials including: glass and ceramic fibres, silk, natural fibres, nylon, synthetic filaments or fibres, high tensile or ballistic fibres, metal, and composites. Standard building construction tends not to require high strength or penetration resistant, though specialised embodiments can provide for specialised products with high strengths and resistance to penetration. Multiple installed layers of such specialised products may be considered for applications requiring some resistance to projectile penetration.
- perforations may be made through one or more layers to improve moisture penetration where a breathable rather than barrier layer is required.
- These may be of varying size, such as used in foil type insulation products, though consideration needs to be given to the potential loss of thermal insulating capability from too free an air flow.
- the use of two separated layers of perforated thermal insulation product in a wall cavity can partially address this. So too can reducing the specific perforation size.
- micro-perforations can be used to minimise air flow but allow the transfer of moisture vapour from one side to another.
- the maximum size of such micro-perforations is typically 125 mils, the preference being for an average micro-perforation diameter of 20 mils or less.
- Micro-perforations of specific shape such as disclosed in USSN 09/537,243, may be performed to improve noise absorption properties of the resulting product - yielding a product with thermal insulation and noise controlling properties.
- Various sheet and roll embodiments may find a variety of applications. Common applications comprise use as an insulating material in buildings, such as under flooring, in wall structures, and in roof and ceiling structures - typically replacing foil and other types of insulating materials. They may also be combined with other building elements, and materials, as will be discussed further.
- the sheet and roll, as well as other embodiments of the present invention may also find use in a variety of applications. They may find use in the insulation of cool rooms or heating rooms, or any other interface requiring insulation. They may be used in the production of storage containers for helping maintain products and contents at a particular temperature, as well as insulating materials in various equipment, both domestic and commercial.
- sheet and roll embodiments such as discussed above, exist.
- a tacky or activatable adhesive layer may be applied to an external face.
- a protective removable backing layer may be provided, depending on the nature of the adhesive.
- sheet or roll form such embodiments may be bonded to building structures and elements - e.g. a block wall, a wall, a panel, car panels, shipping container walls, etc. These may be particularly useful for retrofitting insulation and in renovations, or for modifying a building element or component prior to insulation.
- the product can then be used as a thermal lagging for pipes, and perhaps also to address resonant vibrations that affect some plumbing systems. It can find use in plumbing, air conditioning, venting, and ducting systems.
- the embodiments may be made more flexible, such as by using a thinner substrate. Relative strength can be increased by using a substrate with longer fibres, and by considering the use of reinforcing layers, including tough plastic films (to which the substrate or metallised film may be attached).
- the building elements may comprise any type of material used in construction, whether of buildings, vehicles, storage containers, shipping containers, etc. - not just being for dwellings and commercial buildings.
- the insulation product may be incorporated into the interior of hollow doors. It may be applied as a lining on one side of garage doors. It may be applied to the exterior of bathroom and shower lining panels to help reduce condensation build up, and as a control barrier for moisture.
- a significant use is seen as a lining for plaster type wall boards, such as commonly sold in NZ as Gib® board.
- an exposed substrate may be directly bonded to the paper face of the wallboard, or a sheet with metallised plastics film on both sides attached. Similar adhesives as used for bonding the metallised plasties film and substrate may be considered and used.
- the result is a wall-board with enhanced thermal insulation properties, to the extent that additional insulation may not be required.
- Thermally insulating tapes for joining such tapered wall boards may be provided. These may take a number of forms. For instance a metallised plastic film sandwiched between two substrate layers can be provided. A reinforcing layer may be optionally provided. The outer exposed surface of the substrates may not be exposed or subject to full bonding adhesive penetration - allowing for keying of stopping plaster on the tape. Alternatively one face may be a metallised plastics film with an adhesive layer enabling it to adhere to the tapered region between adjacent wallboards - a protective backing for the adhesive face may be provided. Various permutations and combinations of these can be considered in various embodiments of a tape.
- building elements include application to the face of building blocks, such as concrete, masonry, and lightweight blocks (such as Hebel® blocks).
- a suitable adhesive may be used, preferably but not necessarily a water based adhesive.
- a separate primer or sealer may be applied to the block though the adhesive may also be a primer and/or sealer.
- the resulting block will not only possess thermal insulating properties, but can also include enhanced moisture barrier properties.
- thermally insulating layer can be applied to one or more faces of the interlocking elements.
- the thermally insulating layer can be attached to an internal face of one or more of the panels used in its construction.
- the thermally insulating layer may be attached to timber used in the interlocking element prior to its construction.
- the insulating layer is adhesively bonded, though mechanical attachment methods may be used.
- thermal insulation layer may include timber, and may include interlocking or overlapping lengths (e.g. T&G, ship-lock, etc.) such as may be used for flooring, cladding, weather boards, wall linings, ceiling linings, etc.
- the insulating layer is typically also adhesively bonded to at least one face of the timber. This may be applied prior to milling or machining operations to form overlapping and interlocking elements, though post application to machined lengths can allow the thermal insulating layer to continue around and cover at least part of the overlapping or interlocking portions, increasing the total thermal insulating properties.
- thermal insulating layers allow the overall properties of the timber element to be modified, including thermal insulation properties, moisture barrier properties, noise control properties, and a possible barrier to flora and fauna. It also allows for such properties to be imparted without the builder or tradesperson having to deviate from standard installation practices as the resulting modified building element can normally be used according to standard practices. It also provides the ability to retrofit insulated materials during renovations - for instance, replacement floorboards, cladding, ceiling linings etc. can be modified elements according to the present invention, particularly allowing the installation of thermally insulating properties where space is limited or access to voids (for inserting in-fill type insulating materials) is limited or not possible.
- the sheet-like thermal insulating laminate may be applied to various types of timber lengths (where warranted).
- Application to the rear of mouldings such as scotia, architrave, and skirting etc. (and this also applies to non-wooden mouldings) allows improved thermal insulation at the interfaces of walls, floors, and ceilings etc - an area which can be susceptible to heat loss (and reduced sound insulation) when relying solely on in-fill type insulation materials.
- the thermally insulating sheet product may also be applied to fibre-cement boards and elements, again affecting thermal insulation, moisture barrier, sound deadening, and/or other barrier properties.
- sheets of the thermally insulating product may be used in specialised applications as barrier membranes for showers, etc.
- a suitable adhesive which is moisture resistant when cured
- sheets of the thermally insulating product may be used in specialised applications as barrier membranes for showers, etc.
- the exposed substrate is water resistant, and may be coated with a suitable layer of water-resistant agent.
- This agent may be the same adhesive used for bonding the metallised film and substrate layers.
- One requirement of the agent is that it is compatible with tile adhesives, or at least those recommended for use.
- a range of water based and acrylic adhesives are available which are considered to be preferred choices for consideration in a barrier system such as discussed.
- the sheet type thermal layer may be applied to materials used for constructing packaging containers.
- materials may include corrugated core cardboards, similar and fluted core plastic boards, solid cardboards, solid plastic sheets, etc. Again the thermal layer should be adhesively attached.
- a resulting container would not only possess improved thermal properties, but also improved resistance to delamination from condensation or damp contents. While boxes formed of card with metallised plastics films are known, they are susceptible to delamination and degradation upon exposure to condensation and moisture. Such containers under the present invention are more resistant to this, and even if there is damage to the outer card layer the water resistant thermal layers, and the face of the outer card to which it is attached, will remain intact.
- Another variation of the present invention is the attachment of sheet type thermal insulating layers to standard insulating materials.
- This provides an alternative product with enhanced insulating and other properties.
- the bonding of the present sheet type insulating layer to a standard insulating material may be direct, or a stiffening or strengthening intermediate may be used - e.g. a sheet of a panel material, to allow a cavity to be closed, or to span support elements.
- a simple embodiment of this variant of the present invention may comprise a section of sheet material to which is directly attached an insulating material such as: expanded polystyrene sheet, or fibre batting (as opposed to loose fibre infill).
- These modified products may be used as substitutes for the other - e.g.
- an enhanced polystyrene sheet or higher R value may be used instead of standard expanded polystyrene sheet.
- the enhanced batting material may be used instead of standard batting.
- the sheet backing can make the batting easier to handle but no more difficult to install. It also means less contact between the installer and the rough surface of the batt, which is an irritant when the batt is of glass fibre. Providing a thermal sheet backing on both major faces can also lessen contact during installation. Additionally, however, it can also provide moisture barrier and potentially some improved noise reducing or deadening properties to the batting material.
- a sheet backing larger than the area of the batting - e.g. by providing a margin around the batting area - the edges of the sheet backing can be stapled or otherwise attached to building elements such as studs and joists etc to hold the product (with attached batting) in place.
- This allows this type of product to also be used on non- vertical surfaces, such as retrofitting insulation under timber-framed floors, and to the underside of ceiling joists and purlins etc. in commercial and domestic buildings - to provide a few examples.
- This technique is also applicable to expanded polystyrene and other insulating materials to which the sheet may be bonded, thus improving their functionality.
- a stiffening or strengthening layer may be provided. Quite simply this may be a sheet or panel of a material such as a hardboard, mdf, etc.
- the sheet thermal insulating layer may be positioned between this panel and the additional insulating material, or the panel may be positioned between the two.
- this type of embodiment can be used for closing off and insulating the underside of timber framed flooring, insulating ceilings and roof undersides, etc.
- Figure Ia is an exploded schematic diagram showing the layers within a thermal insulation material according to a preferred embodiment of the present invention
- Figure Ib shows part of a sheet according to the embodiment of figure Ia, including perforations and microperforations,
- Figure 2 is an exploded schematic diagram showing the layers within a thermal insulation material according to an alternative preferred embodiment of the present invention
- Figure 3 is an exploded schematic diagram showing the layers within a thermal insulation material according to a further alternative preferred embodiment of the present invention
- Figure 4 is a partial end section of an embodiment of an insulated plaster type board
- Figure 5 is an end section of an embodiment of an insulated interlocking building element
- Figure 6 is an end section of an embodiment of an insulated lining element
- Figure 7 is an end section of an embodiment of an insulated building moulding
- Figure 8 is a partial end view of an embodiment using the present invention as a barrier or insulating membrane in a shower lining
- Figure 9 is a partial end view of an embodiment of a corrugated product for use in manufacturing packaging
- Figure 10 is an end view of an embodiment including a supplementary insulating block
- Figure 11 is a partial end view showing the use of various embodiments of the present invention under timber floor framing
- Figure 12 is a side view of an embodiment of an insulated ceiling tile for use in suspended ceilings.
- a thermal insulation material according to the present invention comprises a laminate of a first, paper-based substrate layer (1) sandwiched between two outer layers (2, 3).
- the outer layers (2, 3) are metallised plastics films, preferably with the metallised side of the films facing the paper-based substrate layer (1).
- An adhesive is applied between the paper-based substrate layer (1) and each metallised plastics film layer (2, 3).
- the paper-based substrate layer (1) mainly consists of cellulose fibres such as wood pulp with a filler or binder added.
- the paper-based substrate layer may, for example, comprise a blend of semi-chemically treated hardwood (that is, pulp produced by mild-chemical treatment of the raw hardwood such that delignification is only partially accomplished so that the cellulose fibres are not completely separated) and Kraft paper/soft wood fibre. This helps ensure that the laminate has high strength and an improved humidity performance.
- the moisture content of the paper-based substrate layer us between about 8% to about 10% (inclusive) by weight after treatment.
- the cellulose fibres within the paper-based substrate layer (1) may at least partly consist of recycled wood or paper or alternatively, could consist of 100% virgin cellulose fibres.
- the filler or binder material comprises, for example, starch and/or clay and/or glue and may comprise between about 5% to about 25% of the total weight of the paper-based substrate layer.
- the treatment applied to the paper-based substrate layer (1) may be a chemical treatment and/or a heat treatment.
- a chemical treatment may be applied to the substrate during the laminating process or it may be incorporated into the substrate during its manufacture.
- "Semi-chemically treated paper” having a weight of about 160gsm (gram per square metre), manufactured by Carter Holt Harvey in New Zealand, is a particularly suitable material for the paper-based substrate layer (1).
- the metallised plastics film layers (2, 3) may for example comprise metallised polyester film having a thickness of about 12 ⁇ m and/or a weight of about 17gsm.
- the surface of the metallised plastics film adjacent to the paper-based substrate layer (1) may be treated to effectively increase its surface area.
- Various forms of treatment are available to accomplish this, including corona treatment and chemical etching.
- the adhesive used to bond the metallised plastics film layers (2, 3) to the paper-based substrate layer (1) is water-based and, when cured, is water resistant or waterproof.
- the active ingredients within the adhesive should be compatible with the treatment applied to the paper-based substrate layer (1) to ensure an active bond is achieved between the metallised plastics film layers (2, 3) and substrate layer (1).
- the substrate used was manufactured by Carter Holt Harvey of Auckland, New Zealand and sold under the trade mark CLIMATE PERFORMANCE MEDIUM. This substrate is referred to as a semi-chemically treated medium and has the following specifications:
- Kappa a measure of the amount of lignin remaining in the pulp after treatment
- NSSC Neutral Sulphite Semi-chemical treated
- NCC/OCC New Corrugated Containers/Old Corrugated Containers
- the pulp component of the substrate includes both plantation-grown Pinus Radiata (having long and strong cellulose fibres) Kraft pulp and semi-chemical hardwood pulp from virgin Australian hardwood (having short cellulose fibres).
- the chemical treatment of at least the hardwood pulp includes both Sodium Hydroxide and Sodium Sulphite as main ingredients.
- the substrate used also had the following specifications:
- a sodium-based chemical treatment to the substrate can improve the bonding reaction between the adhesive and the substrate (or at least when some of the cellulose fibres treated in the sodium-based treatment) contributing to improved moisture resistance in the finished laminate.
- the adhesive used was manufactured by Henkel New Zealand Limited of Auckland, New Zealand and is identifiable by their code Z9886HV.
- the adhesive is a waterborne synthetic resin having a methacrylic acid base and the following ingredients:
- the adhesive itself had a viscosity (Sp4,5orpm,@20°C) of between 400-700 cps, a pH of between 7.0 and 9.4 and once cured, a very high water resistance and high (180 0 C intermittent exposure) heat resistance.
- the plastics film layers were provided by metallised polyester film having a thickness of about 12pm and a weight of about 17g/m2.
- the surface of the metallised plastics films adjacent to the substrate was chemically treated (etched).
- the metallised surface of the films were positioned adjacent to the substrate.
- the grade of polyester film used had a MVTR (Moisture Vapour Transition Rate) of 0 meaning that water molecules are unable to pass therethrough and in practice, water molecules are unable to cling to the plastics film.
- a thermally insulating sheet material according to example 1 of the present invention is preferably accomplished in a laminating machine such as a standard wet (that is, incorporating an adhesive bonding process rather than heat-bonding) laminating machine in order to produce a continuous strip of finished product.
- the laminator is a machine into which is fed the individual lengths of films or webs of paper-based substrate (1) and metallised plastics (2, 3).
- the sheets or films are fed between or over rollers which selectively heat and/or combine the various layers, some of which have had adhesive applied thereto as mentioned above.
- Heat is introduced into the laminator by for example gas or over dryers in order to activate or set the adhesive.
- the speed and temperature at which the laminator is run is dependent upon the type of laminator but the temperature may range between for example 60 0 C and 17O 0 C, while the speed may range between lOOm/min to 500m/min. At higher laminator speeds it is generally necessary to increase the laminator temperature. As an example, for a 1200mm wide strip of product, the laminator speed may be about 100m/min and the temperature about 60° C.
- the metallised plasties films (2, 3) may be pre-treated (for example, corona treated or chemically etched) or this treatment may be carried out prior to entry of the films to the laminator or within the laminator.
- the paper-based substrate layer (1) may be purchased pre-treated, or a chemical treatment may be applied prior to entry of the substrate to the laminator or within the laminator.
- a chemical treatment may be applied prior to entry of the substrate to the laminator or within the laminator.
- the application of adhesive to the metallised plastics films (2, 3) is carried out prior to entry of the films to the laminator or within the laminator.
- a layer of about 5g/m2 of this adhesive was applied to each side of the substrate within 1 to 4 seconds of lamination with respective plastics film layers in a standard wet laminator operating at about 60 0 C.
- the resulting laminate was formed into a roll and allowed to cool.
- the thickness of the completed sheet of thermal insulation material, after laminating according to such a method, is typically between about 0.5mm and about 1 mm.
- the finished product leaves the laminator it is still at an elevated temperature but because the product has a relatively low heat storage capacity, it may be formed into rolls directly from the laminator output. It can then be left to cool and the adhesive to set before it is used.
- the resulting laminate was tested by the Australian National University and found to: have an R value of 3.8 be mould and mildew resistant (MVTR rating of 0) be heat resistant (low ignition rate) - provide high radiation resistance protection be weather and moisture proof be resistant to vermin be non-allergic be non toxic - remain stable (for example, after 48 hours submerged in water the product did not delaminate).
- MVTR rating of 0
- heat resistant low ignition rate
- the finished product could comprise a single outer layer of metallised plastics film (2) bonded (as described above) to a paper- based substrate layer (1).
- an additional reinforcing layer (4) may be incorporated into the thermal insulation material.
- Reinforcing layer (4) may comprise for example a plastics film or mesh of increased tensile strength and/or tear resistance.
- the reinforcing layer (4) may, for example, comprise a mesh of silk, fibreglass, plastic and/or nylon strands.
- the product of the present invention is sufficiently strong for most uses.
- the laminate may be impenetrable to moisture (due to the polyester film)
- the substrate once the substrate has been manufactured it may be subjected to a perforation step wherein large (6) or tiny perforations (5) (e.g. "pin-hole” sized) are made in the laminate at regular intervals along its length and across its width. This would preferably be carried out after lamination has occurred but prior to the laminate being formed into a roll.
- the perforations allow moisture to pass through the laminate though by making the perforations very small it is not anticipated that they will provide a major point of entry for water to the substrate. In any event, the substrate/film bond is not susceptible to water ingress.
- micro-perforations typically 150mil maximum size and 20mil or less average diameter, can instead be considered and employed.
- the use of micro-perforations can. allow the sheet material to breath and allow water vapour to progress through the sheet, while still acting as a barrier to liquid water and minimising heat loss from air flow.
- This example comprises an insulated wall board panel of the type typically comprising a plaster based core (46) faced with paper sheet linings (44, 45). These are commonly sold in New Zealand under the Gib® brand, and under various brands overseas.
- thermal insulating sheet (40) comprising outer metallised plastic film faces (41, 43) and internal substrate (43), substantially as described in example 1.
- the same adhesive as used to bond the films (41, 43) to the substrate (43) may be used to bond the insulating sheet (40) to the paper face (44) of the plaster board.
- This paper face (44) may be modified to be of a similar material to the substrate (42), or substituted by other materials.
- the insulating sheet (40) can be applied to an already manufactured plaster board, or alternatively the thermal insulating sheet (40) may already be bonded to the lining (44) before they are applied to the plaster core (46) during manufacture of the board.
- the substrate (42) may form the plaster board lining, with layers (43 and 44) absent in the illustration of figure 4.
- This example represents an interlocking building element (50) comprising two spaced apart outer wall members (51, 53) of solid timber. Spacers (52) at intervals connect the members
- This example represents an overlapping or interlocking lining element, such as may be used for cladding, flooring, ceiling or wall linings etc. Illustrated is a timber lining element (60) with a ship-lap profile. It should be appreciated that the same principles may be applied to other profiles, such as T&G, and that the element (61) may be made of other materials, including plastics, fibre cement, reconstituted wood, etc.
- the lining may optionally be extended (63) to cover the overlapping portion of the element (61), though would generally be omitted on T&G type arrangements (depending on the tolerances in the fitting of the tongue in the groove).
- This product is particularly useful for use where cavities may not exist for in-fill type insulation materials, or replacing existing uninsulated elements during renovations.
- This example represents use on various mouldings and architraves, etc. These are particularly useful for improving insulation at intersections of walls, ceilings, and floors etc. Illustrated is one particular profile of a scotia moulding (70). This may be of paper lined plaster, plaster, mdf or reconstituted wood, timber, etc. To the rear face is adhesively bonded a thermally insulating lining (71), such as described in example 1. The same general techniques for bonding the lining (71) to the element (70) as previously discussed for plaster boards (example 3) or timber and wood (example 4) may be used as appropriate.
- Example 7 This example illustrates use as an insulating barrier layer in shower construction. The drawing is deliberately simplified for ease of viewing, and shows a wallboard (80) attached to timber framing (81) as per normal construction practice.
- a thermal insulating layer (84) such as described in example 1. This may be applied by using a construction adhesive which is water proof when cured, the adhesive being brushed, sprayed or rollered on. Alternatively a permanent adhesive backing may be applied to the insulating layer (84), preferably with a protective backing (not shown).
- the outer face of the insulating later (84) (when applied to the wallboard (80)) is ideally compatible with tile adhesive.
- a variety of acrylic water based adhesives are available, which can be applied (82) over the insulating layer (84) for affixing the tiles (83).
- the insulating layer may have an exposed outer substrate layer, which is ideally treated to render it water resistant, for application of the file adhesive.
- Another option is to provide a primer coating to increase adhesion between the tile adhesive and insulating layer (84). Suitable combinations of compatible primers and adhesives may be selected based on manufacturer's date sheets and recommendations.
- This example illustrates a sheet product (90) which may be used for constructing boxes and containers for produce, chilled or heated items, etc.
- an insulating layer (95) comprising metallised film layers (91, 93) sandwiching a substrate (92) and substantially as described in example 1.
- These additional layers (94, 96) may be bonded as additional steps in the manufacturing process for the insulating layer (95), so that the product can be manufactured in substantially a single manufacturing process.
- the insulating layer (95) can be adhesively bonded to an existing corrugated board which has already been manufactured. It should also be appreciated that this embodiment may also be used for non-corrugated core cards, plastic fluted boards, etc.
- Use of the sheet product may also be for applications other than the construction of boxes, and may be an insulating material in its own right for use in building construction and other applications.
- an enhanced insulating product comprising a sheet insulating layer (101) such as described in example 1, to which has been adhesively bonded a block or batt of insulating material (102).
- This insulating material (102) may be glass fibre batting, an expanded polystyrene block, or other materials.
- a margin (103) By extending the sheet (101) past the edges of the block (102) is formed a margin (103) which can be used to staple the sheet (101) to studs, joists, battens etc. during installation.
- the product is a potential alternative to glass fibre batting products, allowing less direct contact with the batting material during installation. It is also particularly amenable to installation on the underside of structures, such as under flooring, and roofs, etc.
- Figure 11 illustrates a modified embodiment of that of figure 10, in that the insulating layer (114) (equivalent to (101) in figure 10), while bonded to an insulating material (116) on one side, is also attached to a stiffening panel 115 on the other side.
- This may be of a material such as a reconstituted wood product (e.g. hardboards, mdf, etc.), plaster boards, fibre cement boards, etc. though may comprise other materials as the application demands. It may even comprise a decorative element such as a ceiling tile, etc.
- the element (110) is mechanically attached to flooring joists (111) under a floor (112).
- This element (110) is particularly useful for insulating the underside of timber framed floors, though may find application in other areas of construction.
- the thermal insulating layer (117) may also be draped across the top of the joists (111) prior to installation of the flooring layer (112) as per standard practices in some jurisdictions. Most such installations require a perforated or breathable insulating layer (117) and thus perforate or breathable embodiments may be used.
- This example illustrates a ceiling tile (120) for use in suspended ceilings though may also be applied to other decorative and finishing elements.
- a thermal insulating layer (121) such as described in example 1, is attached to a major face of the tile element 122. This produces a thermally insulated ceiling tile able to help prevent heat loss into ceiling cavities.
Abstract
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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NZ53123804 | 2004-08-19 | ||
NZ531238 | 2004-08-19 | ||
NZ53372204 | 2004-08-22 | ||
NZ533722 | 2004-08-22 |
Publications (1)
Publication Number | Publication Date |
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WO2006019318A1 true WO2006019318A1 (fr) | 2006-02-23 |
Family
ID=35907658
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/NZ2005/000213 WO2006019318A1 (fr) | 2004-08-19 | 2005-08-18 | Matériau d’isolation thermique |
Country Status (1)
Country | Link |
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WO (1) | WO2006019318A1 (fr) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007137495A1 (fr) * | 2006-05-30 | 2007-12-06 | Shuhuan Wu | Application of de films et/ou de panneaux plastiques utilisés avec des couches de protection et/ou de renfort de structures de batiments ou d' équipements mécaniques |
GB2475024A (en) * | 2009-04-29 | 2011-05-11 | Elizabeth Francina Fernandez | A reinforced cementitious material containing silk protein |
US8640416B2 (en) | 2010-10-19 | 2014-02-04 | Bernard Ted CULLEN | Sliding and locking energy-efficient wall assembly |
EP2562321A3 (fr) * | 2011-08-25 | 2014-07-09 | SCHWENK Dämmtechnik GmbH & Co KG | Matériau d'isolation et procédé de fabrication d'un matériau d'isolation |
US9251778B2 (en) | 2014-06-06 | 2016-02-02 | Industrial Technology Research Institute | Metal foil with microcracks, method of manufacturing the same, and sound-absorbing structure having the same |
JP2016516949A (ja) * | 2013-02-22 | 2016-06-09 | インターフェイス パフォーマンス マテリアルズ, インコーポレイテッド | 軽量熱シールド |
CN111548080A (zh) * | 2020-03-25 | 2020-08-18 | 河南中壮建筑工程有限公司 | 一种保温墙板及其制备方法 |
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AU657459B3 (en) * | 1993-07-29 | 1995-03-09 | Tasman Insulation New Zealand Limited | Reflective insulation sheet material |
DE29615684U1 (de) * | 1996-09-09 | 1996-10-31 | Gruenzweig & Hartmann | Schornsteindämmanschette |
WO1999039059A1 (fr) * | 1998-01-30 | 1999-08-05 | Owens Corning | Ensemble d'isolation a rebords et son procede de fabrication |
WO2000057101A1 (fr) * | 1999-03-19 | 2000-09-28 | Rockwool Lapinus B.V. | Couverture isolante auto-adhesive |
WO2001019610A1 (fr) * | 1999-09-15 | 2001-03-22 | Textiles Coated Inc. | Materiau pour joint de dilatation composite |
WO2004016427A1 (fr) * | 2002-08-15 | 2004-02-26 | Bruce Alister David Steentjes | Ameliorations relatives aux materiaux isolants en feuilles |
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2005
- 2005-08-18 WO PCT/NZ2005/000213 patent/WO2006019318A1/fr active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU657459B3 (en) * | 1993-07-29 | 1995-03-09 | Tasman Insulation New Zealand Limited | Reflective insulation sheet material |
DE29615684U1 (de) * | 1996-09-09 | 1996-10-31 | Gruenzweig & Hartmann | Schornsteindämmanschette |
WO1999039059A1 (fr) * | 1998-01-30 | 1999-08-05 | Owens Corning | Ensemble d'isolation a rebords et son procede de fabrication |
WO2000057101A1 (fr) * | 1999-03-19 | 2000-09-28 | Rockwool Lapinus B.V. | Couverture isolante auto-adhesive |
WO2001019610A1 (fr) * | 1999-09-15 | 2001-03-22 | Textiles Coated Inc. | Materiau pour joint de dilatation composite |
WO2004016427A1 (fr) * | 2002-08-15 | 2004-02-26 | Bruce Alister David Steentjes | Ameliorations relatives aux materiaux isolants en feuilles |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007137495A1 (fr) * | 2006-05-30 | 2007-12-06 | Shuhuan Wu | Application of de films et/ou de panneaux plastiques utilisés avec des couches de protection et/ou de renfort de structures de batiments ou d' équipements mécaniques |
GB2475024A (en) * | 2009-04-29 | 2011-05-11 | Elizabeth Francina Fernandez | A reinforced cementitious material containing silk protein |
US8640416B2 (en) | 2010-10-19 | 2014-02-04 | Bernard Ted CULLEN | Sliding and locking energy-efficient wall assembly |
EP2562321A3 (fr) * | 2011-08-25 | 2014-07-09 | SCHWENK Dämmtechnik GmbH & Co KG | Matériau d'isolation et procédé de fabrication d'un matériau d'isolation |
JP2016516949A (ja) * | 2013-02-22 | 2016-06-09 | インターフェイス パフォーマンス マテリアルズ, インコーポレイテッド | 軽量熱シールド |
US9251778B2 (en) | 2014-06-06 | 2016-02-02 | Industrial Technology Research Institute | Metal foil with microcracks, method of manufacturing the same, and sound-absorbing structure having the same |
CN111548080A (zh) * | 2020-03-25 | 2020-08-18 | 河南中壮建筑工程有限公司 | 一种保温墙板及其制备方法 |
CN111548080B (zh) * | 2020-03-25 | 2022-12-23 | 河南中壮建筑工程有限公司 | 一种保温墙板及其制备方法 |
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