EP0368529A1 - Panneaux constitués d'un matériau thermiquement isolant - Google Patents

Panneaux constitués d'un matériau thermiquement isolant Download PDF

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Publication number
EP0368529A1
EP0368529A1 EP89311189A EP89311189A EP0368529A1 EP 0368529 A1 EP0368529 A1 EP 0368529A1 EP 89311189 A EP89311189 A EP 89311189A EP 89311189 A EP89311189 A EP 89311189A EP 0368529 A1 EP0368529 A1 EP 0368529A1
Authority
EP
European Patent Office
Prior art keywords
tray
panel
insulating material
membrane
peripheral portions
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.)
Withdrawn
Application number
EP89311189A
Other languages
German (de)
English (en)
Inventor
John Thomas Hughes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Micropore International Ltd
Original Assignee
Micropore International Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Micropore International Ltd filed Critical Micropore International Ltd
Publication of EP0368529A1 publication Critical patent/EP0368529A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
    • E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
    • E04C2/292—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and sheet metal

Definitions

  • This invention relates to panels of thermal insulating material, and particularly to panels incorporating microporous insulating material.
  • microporous material means a porous material in which the mean pore size is less than the mean free path of an air molecule at normal temperature and pressure.
  • Such materials can form extremely efficient insulators and may be made, for example, from a silica aerogel (a gel in which the liquid phase is replaced with air or other gas without permitting disruption of the structure by capillary forces), from an open lattice material obtained by precipitation from a silica solution under controlled conditions of temperature and pH, or from equivalent open lattice silica structures such as fumed pyrogenic or electro-thermal types (e.g. made by high temperature hydrolysis of a silicon tetrahalide such as silicon tetrachloride) in which the average particle size is less than 100 nanometers.
  • silica aerogel a gel in which the liquid phase is replaced with air or other gas without permitting disruption of the structure by capillary forces
  • an open lattice material obtained by precipitation from a silica solution under controlled conditions of temperature and pH
  • microporous materials are typically mixed with a reinforcing fibre of a ceramic material such as alumino­silicate, and with an opacifier such as titanium dioxide powder to block transmission of infrared radiation through the insulation.
  • a ceramic material such as alumino­silicate
  • an opacifier such as titanium dioxide powder to block transmission of infrared radiation through the insulation.
  • the material must be compressed to a density (typically 200 kg/cubic m or more) which is several times higher than its intrinsic density, in order to produce a satisfactory insulator.
  • the insulating material is compressed into a shallow, flat tray which has been previously pressed from a metal sheet. This has the problem that manufacture of the tray requires special tooling to produce each required shape and size of tray, with consequent high cost of manufacture, especially for small quantities.
  • a panel of thermal insulating material incorporating a layer of compressed microporous insulating material, characterised in that said layer is disposed in a tray having peripheral portions of relatively rigid material and a membrane of flexible material extending between said peripheral portions and across a face of said layer.
  • the peripheral portions may be made of a material such as metal, plastic or glass fibre, for example in strip form, and may be spot-welded together.
  • the membrane may be a foil, of a metal such as aluminium, and may be secured to the peripheral portions for example by adhesive.
  • the peripheral portions preferably have a base section and a flange, so that the membrane may be secured to these base sections.
  • a method of manufacturing a panel of thermal insulating material characterised by the steps of securing together pieces of relatively rigid material to form a periphery of a tray, securing a membrane of flexible material to extend between said peripheral pieces and form a base for said tray, and compressing microporous insulating material into said tray.
  • the tray may be urged against a member (for example a sheet over part of a press tool) having a surface pattern which is pressed into the membrane; this serves to remove blemishes and provide an attractive appearance.
  • a panel 10 of thermal insulating material comprises a layer of microporous insulating material 12 compressed into a tray 14.
  • the insulating material 12 is a mixture of silica aerogel, ceramic reinforcement fibre and titanium dioxide opacifier, such as that made and sold under the trade mark MICROTHERM by Micropore International Limited.
  • the periphery of the tray 14 is made of four lengths 16 of flanged galvanised steel strip which have butted flanges 18 and overlapping base sections 20. These base sections are spot-welded together where they overlap to provide the tray with strength and rigidity.
  • a sheet of self-­adhesive aluminium foil 22 is secured by its adhesive to the underside of the base sections 20 to form a membrane extending across and providing a base for the tray 14 and closing the aperture framed by the peripheral portions 16.
  • the sheet 22 extends across one face of the layer of insulating material 12. If the sheet 22 has adhesive over its whole surface, the insulating material 12 will stick to the adhesive but this is not essential.
  • the panel 10 is made by first cutting flanged strip to provide four peripheral portions 16 of the required lengths.
  • Many sizes and shapes of tray can be made from a supply of a single kind of flanged strip by appropriate choice of these lengths, thereby effecting significant economies compared to the use of one-piece trays pressed from sheet material.
  • a sheet 22 of self-­adhesive aluminium foil is cut to size and stuck to the underside of the base sections, and the tray 14 thus formed is placed in a press (indicated at 30 in Figure 4).
  • a lower tool 32 of the press 30 has a raised surface pattern.
  • This can conveniently be provided with a sheet 34 of material having a regular pattern of projections from its surface, for example a sheet of so-called 'expanded metal' having louvre-like perforations separated by ridges of raised material.
  • This sheet 34 is simply placed on the lower press tool 32 under the tray 14.
  • microporous material mixture 12 is placed in the press tool 30 and an upper tool 36 is brought down to compress the mixture 12 to an appropriate density (typically 200 kg/cubic m or more).
  • an appropriate density typically 200 kg/cubic m or more.
  • the upper tool 36 is raised and the completed panel 10 is extracted.
  • the sheet 34 embosses the sheet 22 of aluminium foil with a pattern complementary to its own surface, thereby removing surface blemishes such as creases and providing a neat and attractive finish.
  • the panel 10 is surprisingly robust and can withstand handling without damage or deformation.
  • the peripheral portions 16 may be made of a non-metallic material such as plastic or glass fibre; the material used need not be completely rigid, but is of course relatively much more rigid than either the insulating material 12 or the sheet 22.
  • the sheet 22 may be made of a material other than aluminium foil.
  • the microporous insulating material may incorporate microporous materials other than silica aerogel, in particular a precipitated silica; and fibres other than ceramic fibre may be used, for example glass fibre.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Thermal Insulation (AREA)
  • Laminated Bodies (AREA)
EP89311189A 1988-11-08 1989-10-30 Panneaux constitués d'un matériau thermiquement isolant Withdrawn EP0368529A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8826163 1988-11-08
GB888826163A GB8826163D0 (en) 1988-11-08 1988-11-08 Panels of thermal insulating material

Publications (1)

Publication Number Publication Date
EP0368529A1 true EP0368529A1 (fr) 1990-05-16

Family

ID=10646517

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89311189A Withdrawn EP0368529A1 (fr) 1988-11-08 1989-10-30 Panneaux constitués d'un matériau thermiquement isolant

Country Status (2)

Country Link
EP (1) EP0368529A1 (fr)
GB (2) GB8826163D0 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10231217A1 (de) * 2002-07-03 2004-01-22 Arno Stöhr Füll- und/oder Bewuchskörper aus Kunststoff
FR2862122A1 (fr) * 2003-11-10 2005-05-13 Pcx Materiau isolant thermique
WO2008118776A3 (fr) * 2007-03-23 2009-02-05 Birdair Inc Structures de membranes architecturales et leurs procédés de production
US8899000B2 (en) 2010-07-09 2014-12-02 Birdair, Inc. Architectural membrane and method of making same
CN109898730A (zh) * 2019-03-21 2019-06-18 山西中电科技特种装备有限公司 一种方舱大板

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3771213A (en) * 1969-12-19 1973-11-13 Armstrong Cork Co Method of forming an embossed foil-covered ceiling panel
EP0246047A1 (fr) * 1986-05-14 1987-11-19 Micropore International Limited Panneau d'isolation thermique microporeux
EP0259079A2 (fr) * 1986-09-02 1988-03-09 Micropore International Limited Procédé pour le moulage d'articles façonnés à base d'un matériau d'isolation thermique microporeux

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1061204A (en) * 1964-05-27 1967-03-08 Edward Wharton Shaw Heat insulating panels
SE466299B (sv) * 1983-08-04 1992-01-27 Micropore International Ltd Vaermeisolerande kropp och saett att framstaella den, innefattande en armerande bikakestruktur och ett vaermeisolationsmaterial

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3771213A (en) * 1969-12-19 1973-11-13 Armstrong Cork Co Method of forming an embossed foil-covered ceiling panel
EP0246047A1 (fr) * 1986-05-14 1987-11-19 Micropore International Limited Panneau d'isolation thermique microporeux
EP0259079A2 (fr) * 1986-09-02 1988-03-09 Micropore International Limited Procédé pour le moulage d'articles façonnés à base d'un matériau d'isolation thermique microporeux

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10231217A1 (de) * 2002-07-03 2004-01-22 Arno Stöhr Füll- und/oder Bewuchskörper aus Kunststoff
FR2862122A1 (fr) * 2003-11-10 2005-05-13 Pcx Materiau isolant thermique
WO2008118776A3 (fr) * 2007-03-23 2009-02-05 Birdair Inc Structures de membranes architecturales et leurs procédés de production
US8899000B2 (en) 2010-07-09 2014-12-02 Birdair, Inc. Architectural membrane and method of making same
CN109898730A (zh) * 2019-03-21 2019-06-18 山西中电科技特种装备有限公司 一种方舱大板

Also Published As

Publication number Publication date
GB2228556A (en) 1990-08-29
GB8826163D0 (en) 1988-12-14
GB8925083D0 (en) 1989-12-28

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