GB1561271A - Fire doors - Google Patents
Fire doors Download PDFInfo
- Publication number
- GB1561271A GB1561271A GB644676A GB644676A GB1561271A GB 1561271 A GB1561271 A GB 1561271A GB 644676 A GB644676 A GB 644676A GB 644676 A GB644676 A GB 644676A GB 1561271 A GB1561271 A GB 1561271A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cement
- door
- mixture
- mould
- magnesia
- 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.)
- Expired
Links
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 63
- 239000004568 cement Substances 0.000 claims description 45
- 239000000395 magnesium oxide Substances 0.000 claims description 35
- 239000000203 mixture Substances 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 28
- 239000000463 material Substances 0.000 claims description 17
- 239000006260 foam Substances 0.000 claims description 12
- 239000004088 foaming agent Substances 0.000 claims description 11
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical group C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 9
- 239000002253 acid Substances 0.000 claims description 9
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 7
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 6
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims description 6
- 159000000003 magnesium salts Chemical class 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 6
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 5
- IQYKECCCHDLEPX-UHFFFAOYSA-N chloro hypochlorite;magnesium Chemical group [Mg].ClOCl IQYKECCCHDLEPX-UHFFFAOYSA-N 0.000 claims description 5
- 239000003599 detergent Substances 0.000 claims description 5
- 239000003365 glass fiber Substances 0.000 claims description 5
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000002023 wood Substances 0.000 claims description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 239000002657 fibrous material Substances 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 4
- 239000011343 solid material Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 239000004113 Sepiolite Substances 0.000 claims description 3
- 238000013019 agitation Methods 0.000 claims description 3
- 239000010425 asbestos Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000005187 foaming Methods 0.000 claims description 3
- 239000008258 liquid foam Substances 0.000 claims description 3
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000011490 mineral wool Substances 0.000 claims description 3
- 239000010451 perlite Substances 0.000 claims description 3
- 235000019362 perlite Nutrition 0.000 claims description 3
- 229910052895 riebeckite Inorganic materials 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 229910052624 sepiolite Inorganic materials 0.000 claims description 3
- 235000019355 sepiolite Nutrition 0.000 claims description 3
- 239000004291 sulphur dioxide Substances 0.000 claims description 3
- 235000010269 sulphur dioxide Nutrition 0.000 claims description 3
- 239000010455 vermiculite Substances 0.000 claims description 3
- 229910052902 vermiculite Inorganic materials 0.000 claims description 3
- 235000019354 vermiculite Nutrition 0.000 claims description 3
- 235000019738 Limestone Nutrition 0.000 claims description 2
- 239000001569 carbon dioxide Substances 0.000 claims description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims description 2
- 239000000446 fuel Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 239000006028 limestone Substances 0.000 claims description 2
- JESHZQPNPCJVNG-UHFFFAOYSA-L magnesium;sulfite Chemical compound [Mg+2].[O-]S([O-])=O JESHZQPNPCJVNG-UHFFFAOYSA-L 0.000 claims description 2
- 239000010874 unset cement Substances 0.000 claims description 2
- 239000002956 ash Substances 0.000 claims 1
- 239000010881 fly ash Substances 0.000 claims 1
- -1 polyoxyethylene Polymers 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000012047 saturated solution Substances 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
- E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
- E06B5/16—Fireproof doors or similar closures; Adaptations of fixed constructions therefor
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/30—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing magnesium cements or similar cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/10—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam
- C04B38/103—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam the foaming being obtained by the introduction of a gas other than untreated air, e.g. nitrogen
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/70—Door leaves
- E06B3/7015—Door leaves characterised by the filling between two external panels
- E06B2003/7023—Door leaves characterised by the filling between two external panels of foam type
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Civil Engineering (AREA)
- Special Wing (AREA)
Description
(54) FIRE DOORS
(71) We, STEETLEY MINERALS LIMITED, formerly STEETLEY (MFG) LIMITED, a
British Company, of Gateford Hill,
Worksop, Nottinghamshire, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:- The present invention relates to fire doors.
According to the present invention there is provided a fire door comprising foamed magnesia cement formed from a mixture comprising magnesia having a specific surface area of 25 to 50 m2/g.
The doors of the present invention may also comprise a core of foamed magnesia cement surfaced on one or more faces with a sheet of wood, plastics or other surfacing.
The present invention includes fire doors as described above which are provided with one or more fittings of the kind, knobs, handles, locks, bolts, fasteners, hinges, pivots, sliding suspension gear, etc. Suitably the cement is moulded with recesses for accepting these fittings.
Magnesia cements are well known, and of particular use in the fire doors of the present invention are magnesium oxysulphate, magnesium oxyphosphate, magnesium oxychloride and mixtures of two or more of these materials. Preferably the magnesium cement is magnesium oxychloride or a mixture of this with the oxysulphate, the oxyphosphate or even the oxysulphite.
The present invention also provides a method of making fire doors which method comprises forming a settable liquid foam of magnesia cement, casting the foam in a suitable mould, the cement comprising magnesia having a specific surface area of 25 to
50 m2/g, and allowing the foam to set.
This may be preformed by forming a settable aqueous mixture of magnesia, and a magnesium salt and/or an acid and a foaming agent, foaming the mixture, and setting the mixture in the mould.
Typically, the foamed magnesia cement used in the present invention may be made by a process which comprises forming a mixture containing the appropriate magnesium salt or mixture of salts (e.g. the chloride, sulphate or phosphate) magnesium oxide, water, optionally a mineral acid such as phosphoric acid or hydrochloric acid to modify the rate of setting, and a fdaming agent, entraining air, and/or other gas in the mixture (e.g. by mechanical agitation or blowing in air) and allowing the foamed mixture to set or cure. The magnesium salt and water may be present in such quantities as to make a saturated solution of the magnesium salt in the water.
The proportion of magnesium oxide to magnesium chloride in a magnesium oxychloride cement for use in the invention is preferably from 35% to 65% /Q by weight magnesium oxide to 65% to 35% by weight magensium chloride.
In Order to obtain the appropriate setting time the magnesium oxide is preferably one which has been calcined at a temperature in the range 1400if to 1800"F. The particle size of the magnesium oxide is such as to have a specific surface area of 25 to 50 m2lg.
The foaming agent may be an acid compatible detergent present in amounts varying from 0.1% to 5% by weight based on the weight of the mixture.
Suitable detergents for use as foaming agents include non-ionic surfactants such as polyoxyethylene, ethoxylated alkyl phenols, ethoxylated aliphatic alcohols, carboxylic amides, polyoxyethylene fatty acid amides and anionic surfactants such as aromatic sulpheonates. A preferred detergent is a nonylphenol/ethylene oxide condensate con taining 9 ethylene oxide units per unit of phenol.
The foaming agent may be a chemical frothing agent, that is a substance which reacts with other compounds or upon heating to evolve gas. An example is limestone which can react with an acid to liberate carbon dioxide.
Sulphur dioxide may be bubbled through the mixture while it is being foamed and this is absorbed as magnesium sulphite which has a good degree of high temperature stability.
The foamed magnesia cement suitably contains solid materials such as filler and/or fibrous materials. Examples of fillers are sand, expanded aggregates such as expanded perlite and expanded vermiculite and pulversed fuel ash. Examples of fibrous materials are microfibrous materials such as sepiolite and macrofibrous materials such as mineral wool, glass fibre and asbestos.
The amount of solid material may vary from 1% to 50% by weight of the door.
The fire doors of the present invention may be made by casting the cement in a suitable mould. If a door of sandwich construction is being made, one of the veneers may be placed in the bottom of the mould and the cement cast upon it. The second veneer if used can be laid on the surface df the cast cement. No adhesives are required to bind the veneers to the unset cement. Alternatively the door may be cast vertically with the veneers forming two of the walls of the mould. The veneers can of course be fixed to the cured moulded cement block which is to form the code of the structure but in this case adhesives will be necessary.
The invention therefor includes a method in which one or more moulding surfaces of the mould are formed from surfacing materials which, on setting of the foam, form the surface of the building structure.
The density of the foamed magnesia cement from which the structures of the present invention are made is desirably in the range 0.2 to 1.0 g/cm3.
EXAMPLE
10 parts of magnesium oxide calcined at 16000F and having a surface area of 35 mlg, 10 parts of magnesium chloride, 6 parts of water, 0.5 parts of glass fibre and 0.1 parts of nonylphenol/ethylene oxide condensate were agitated together for 30 minutes to give a foamed pourable fluid which was cast into a mould 215 cm by 80 cm by 4.5 cm which was lined with hardboard.
When the cement had partially set a second sheet of hardboard was placed on the cement leaving the cement sandwiched between the two sheets of hardboard. After 180 minutes, the cement had set and the fire door was extracted from the mould.
Hinges were screwed to the door and, when hung, the door received 10,000 slams without damage.
WHAT WE CLAIM IS:
1. A fire door comprising foamed magnesia cement formed from a mixture comprising magnesia having a specific surface area of 25 to 50 mVg.
2. A door as claimed in claim 1, wherein the cement is a magnesium oxychloride, oxysulphate, oxyphosphate or oxysulphite cement or a mixture of two or more such cements.
3. A door as claimed in claim 1 or claim 2, wherein the magnesia cement has a bulk density of from 0.2 to 1.0 g/cm3.
4. A door as claimed in any preceding claim having a core of foamed magnesia cement wholly or partly surfaced with a surface material.
5. A door as claimed in claim 4, wherein the surfacing material comprises one or more sheets of wood or a plastics material.
6. A fire door substantially as hereinbefore described in the Example.
7. A method of making fire doors which method comprises forming a settable liquid foam of magnesia cement, casting the foam in a suitable mould, the cement comprising magnesia having a specific surface area of 25 to 50 m2/g, and allowing the foam to set.
8. A method as claimed in claim 7, wherein one or more moulding surfaces of the mould are formed from surfacing materials which, on setting of the foam, form the surface of the fire door.
9. A method as claimed in claim 8 wherein a sheet of wood or of a plastics material forms a moulding face of the mould and becomes bonded to the foam on setting.
10. A method as claimed in any one of claims 7 to 10 which comprises forming a settable aqueous mixture of magnesia, and a magnesium salt and/or an acid, and a foaming agent, foaming the mixture, and setting the mixture in the mould.
11. A method as claimed in claim 10 wherein the magnesia has been calcined at from 1400 to 1800"F.
12. A method as claimed in any one of claims 10 to 11 wherein the settable mixture contains from 0'. 1 to 5% by weight of an acid compatible detergent as foaming agent.
13. A method as claimed in claim 12 wherein the foaming agent is a nonylphenol/ ethylene oxide condensate containing 9 ethylene oxide units per unit of phenol.
14. A method as claimed in any one of claims 8 to 13 wherein the mixture is foamed by agitation.
15. A method as claimed in any one of claims 7 to 13 wherein the mixture is foamed by injection of gas.
16. A method as claimed in claim 15
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (19)
- **WARNING** start of CLMS field may overlap end of DESC **.taining 9 ethylene oxide units per unit of phenol.The foaming agent may be a chemical frothing agent, that is a substance which reacts with other compounds or upon heating to evolve gas. An example is limestone which can react with an acid to liberate carbon dioxide.Sulphur dioxide may be bubbled through the mixture while it is being foamed and this is absorbed as magnesium sulphite which has a good degree of high temperature stability.The foamed magnesia cement suitably contains solid materials such as filler and/or fibrous materials. Examples of fillers are sand, expanded aggregates such as expanded perlite and expanded vermiculite and pulversed fuel ash. Examples of fibrous materials are microfibrous materials such as sepiolite and macrofibrous materials such as mineral wool, glass fibre and asbestos.The amount of solid material may vary from 1% to 50% by weight of the door.The fire doors of the present invention may be made by casting the cement in a suitable mould. If a door of sandwich construction is being made, one of the veneers may be placed in the bottom of the mould and the cement cast upon it. The second veneer if used can be laid on the surface df the cast cement. No adhesives are required to bind the veneers to the unset cement. Alternatively the door may be cast vertically with the veneers forming two of the walls of the mould. The veneers can of course be fixed to the cured moulded cement block which is to form the code of the structure but in this case adhesives will be necessary.The invention therefor includes a method in which one or more moulding surfaces of the mould are formed from surfacing materials which, on setting of the foam, form the surface of the building structure.The density of the foamed magnesia cement from which the structures of the present invention are made is desirably in the range 0.2 to 1.0 g/cm3.EXAMPLE10 parts of magnesium oxide calcined at 16000F and having a surface area of 35 mlg, 10 parts of magnesium chloride, 6 parts of water, 0.5 parts of glass fibre and 0.1 parts of nonylphenol/ethylene oxide condensate were agitated together for 30 minutes to give a foamed pourable fluid which was cast into a mould 215 cm by 80 cm by 4.5 cm which was lined with hardboard.When the cement had partially set a second sheet of hardboard was placed on the cement leaving the cement sandwiched between the two sheets of hardboard. After 180 minutes, the cement had set and the fire door was extracted from the mould.Hinges were screwed to the door and, when hung, the door received 10,000 slams without damage.WHAT WE CLAIM IS: 1. A fire door comprising foamed magnesia cement formed from a mixture comprising magnesia having a specific surface area of 25 to 50 mVg.
- 2. A door as claimed in claim 1, wherein the cement is a magnesium oxychloride, oxysulphate, oxyphosphate or oxysulphite cement or a mixture of two or more such cements.
- 3. A door as claimed in claim 1 or claim 2, wherein the magnesia cement has a bulk density of from 0.2 to 1.0 g/cm3.
- 4. A door as claimed in any preceding claim having a core of foamed magnesia cement wholly or partly surfaced with a surface material.
- 5. A door as claimed in claim 4, wherein the surfacing material comprises one or more sheets of wood or a plastics material.
- 6. A fire door substantially as hereinbefore described in the Example.
- 7. A method of making fire doors which method comprises forming a settable liquid foam of magnesia cement, casting the foam in a suitable mould, the cement comprising magnesia having a specific surface area of 25 to 50 m2/g, and allowing the foam to set.
- 8. A method as claimed in claim 7, wherein one or more moulding surfaces of the mould are formed from surfacing materials which, on setting of the foam, form the surface of the fire door.
- 9. A method as claimed in claim 8 wherein a sheet of wood or of a plastics material forms a moulding face of the mould and becomes bonded to the foam on setting.
- 10. A method as claimed in any one of claims 7 to 10 which comprises forming a settable aqueous mixture of magnesia, and a magnesium salt and/or an acid, and a foaming agent, foaming the mixture, and setting the mixture in the mould.
- 11. A method as claimed in claim 10 wherein the magnesia has been calcined at from 1400 to 1800"F.
- 12. A method as claimed in any one of claims 10 to 11 wherein the settable mixture contains from 0'. 1 to 5% by weight of an acid compatible detergent as foaming agent.
- 13. A method as claimed in claim 12 wherein the foaming agent is a nonylphenol/ ethylene oxide condensate containing 9 ethylene oxide units per unit of phenol.
- 14. A method as claimed in any one of claims 8 to 13 wherein the mixture is foamed by agitation.
- 15. A method as claimed in any one of claims 7 to 13 wherein the mixture is foamed by injection of gas.
- 16. A method as claimed in claim 15wherein the gas is sulphur dioxide.
- 17. A method as claimed in any one of claims 7 to 16 wherein the settable mixture contains sand, expanded perlite, expanded vermiculite, pulverised fuel ash, sepiolite, mineral wool, glass fibre or asbestos.
- 18. A method as claimed in claim 7, substantially as hereinbefore described in the Example.
- 19. A fire door when produced by a method claimed in any one of claims 7 to 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB644676A GB1561271A (en) | 1977-02-07 | 1977-02-07 | Fire doors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB644676A GB1561271A (en) | 1977-02-07 | 1977-02-07 | Fire doors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1561271A true GB1561271A (en) | 1980-02-20 |
Family
ID=9814640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB644676A Expired GB1561271A (en) | 1977-02-07 | 1977-02-07 | Fire doors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1561271A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0019180A1 (en) * | 1979-05-17 | 1980-11-26 | Rheinhold & Mahla GmbH | Method of producing fire-proof structural elements |
| US4661398A (en) * | 1984-04-25 | 1987-04-28 | Delphic Research Laboratories, Inc. | Fire-barrier plywood |
| US4818595A (en) * | 1984-04-25 | 1989-04-04 | Delphic Research Laboratories, Inc. | Fire barrier coating and fire barrier plywood |
| GB2266912A (en) * | 1992-05-12 | 1993-11-17 | Hoong Thye | Door or door core using cement or gypsum |
| RU2162455C1 (en) * | 2000-06-20 | 2001-01-27 | Мовчанюк Вадим Михайлович | Raw mix for manufacturing foam concrete based on magnesia binder |
| WO2004014816A3 (en) * | 2002-08-09 | 2004-04-22 | Denis Bezard | Hydraulically hardening substance |
| US6972100B2 (en) * | 2002-04-24 | 2005-12-06 | Tt Technologies, Inc. | Method and system for providing articles with rigid foamed cementitious cores |
| DE102008058222A1 (en) * | 2008-11-19 | 2010-05-20 | Qualifire Materials Co. Ltd., Yixing | Continuously producing fire-resistant door panels in the form of plates in a sandwich-like composite made of non-woven material and foamed hardenable pasty magnesium oxychloride mixture, comprises placing non-woven material on base plates |
| FR2943698A1 (en) * | 2009-03-31 | 2010-10-01 | Vincent Damour | Fire resistant sandwiched panel for e.g. doors integrated in fire door assembly, has core constituted of material containing reinforced fiber cement reinforced by cellulose fibers, where core is sandwiched between weather boards |
-
1977
- 1977-02-07 GB GB644676A patent/GB1561271A/en not_active Expired
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0019180A1 (en) * | 1979-05-17 | 1980-11-26 | Rheinhold & Mahla GmbH | Method of producing fire-proof structural elements |
| US4661398A (en) * | 1984-04-25 | 1987-04-28 | Delphic Research Laboratories, Inc. | Fire-barrier plywood |
| US4818595A (en) * | 1984-04-25 | 1989-04-04 | Delphic Research Laboratories, Inc. | Fire barrier coating and fire barrier plywood |
| GB2266912A (en) * | 1992-05-12 | 1993-11-17 | Hoong Thye | Door or door core using cement or gypsum |
| RU2162455C1 (en) * | 2000-06-20 | 2001-01-27 | Мовчанюк Вадим Михайлович | Raw mix for manufacturing foam concrete based on magnesia binder |
| US6972100B2 (en) * | 2002-04-24 | 2005-12-06 | Tt Technologies, Inc. | Method and system for providing articles with rigid foamed cementitious cores |
| WO2004014816A3 (en) * | 2002-08-09 | 2004-04-22 | Denis Bezard | Hydraulically hardening substance |
| DE102008058222A1 (en) * | 2008-11-19 | 2010-05-20 | Qualifire Materials Co. Ltd., Yixing | Continuously producing fire-resistant door panels in the form of plates in a sandwich-like composite made of non-woven material and foamed hardenable pasty magnesium oxychloride mixture, comprises placing non-woven material on base plates |
| FR2943698A1 (en) * | 2009-03-31 | 2010-10-01 | Vincent Damour | Fire resistant sandwiched panel for e.g. doors integrated in fire door assembly, has core constituted of material containing reinforced fiber cement reinforced by cellulose fibers, where core is sandwiched between weather boards |
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