WO1992004169A1 - Procede de collage par voie seche pour la fabrication d'elements a base de fibres - Google Patents
Procede de collage par voie seche pour la fabrication d'elements a base de fibres Download PDFInfo
- Publication number
- WO1992004169A1 WO1992004169A1 PCT/SE1991/000570 SE9100570W WO9204169A1 WO 1992004169 A1 WO1992004169 A1 WO 1992004169A1 SE 9100570 W SE9100570 W SE 9100570W WO 9204169 A1 WO9204169 A1 WO 9204169A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- water
- fibres
- powder
- glue
- fibre
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000000835 fiber Substances 0.000 title claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 title abstract description 6
- 238000004026 adhesive bonding Methods 0.000 title abstract description 5
- 239000000843 powder Substances 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000003292 glue Substances 0.000 claims abstract description 18
- 239000004848 polyfunctional curative Substances 0.000 claims abstract description 10
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 5
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000007723 die pressing method Methods 0.000 claims abstract description 4
- 238000002425 crystallisation Methods 0.000 claims abstract description 3
- 230000008025 crystallization Effects 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims abstract description 3
- 239000004033 plastic Substances 0.000 claims abstract description 3
- 150000004760 silicates Chemical class 0.000 claims abstract description 3
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 3
- 238000012856 packing Methods 0.000 claims abstract 2
- 239000007787 solid Substances 0.000 claims abstract 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 230000004523 agglutinating effect Effects 0.000 claims 1
- 229910044991 metal oxide Inorganic materials 0.000 claims 1
- 150000004706 metal oxides Chemical class 0.000 claims 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 abstract description 8
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 abstract 2
- 238000002156 mixing Methods 0.000 abstract 1
- 239000011787 zinc oxide Substances 0.000 abstract 1
- 229910052910 alkali metal silicate Inorganic materials 0.000 description 6
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 229920002522 Wood fibre Polymers 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000004115 Sodium Silicate Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 229910052911 sodium silicate Inorganic materials 0.000 description 3
- 238000001035 drying Methods 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- -1 chalk Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- AGIMJDFJHWOHBM-UHFFFAOYSA-N magnesium oxygen(2-) silicic acid Chemical compound [O-2].[Mg+2].O[Si](O)(O)O AGIMJDFJHWOHBM-UHFFFAOYSA-N 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 235000019351 sodium silicates Nutrition 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
- B27N1/02—Mixing the material with binding agent
- B27N1/0209—Methods, e.g. characterised by the composition of the agent
Definitions
- fibres of different types - especially wood fibres - are dispersed in an airstream. This one goes to a forming station or a moulder, where the air is exhausted by suction so that the fibres are packed together in a cake or a slab. This one is then pressed in a hot moulding press at the same time being dried and possibly cured to a body of required form and density.
- glue materials dispersed or dissolved in water, are added.
- the glue addition is made by injection of the glue into the steam-fiber-stream from the defibrator, producing the wood fibres. Then the fibres are dried strictly observing that the added glue must not be cured if it is a curable one. Then the fibres are dispersed in an air-stream which is blown into a diffuser, giving the air-fibre stream the right width and height, before it streams into the moulder.
- the glue injection is made directly into the diffuser with or without previous drying of the fibres from the defibrator.
- the glue powder can be water soluble and then forms a glue solution with water, which either goes with the fibres from the beginning of the process or is added though injection during the process. At the final drying the size powder transcends to a firm bond, joining the fibres. If a specially waterresistant fibre product is required also a hardener for the glue substance can be added. This hardener is added either in powder form separately or mixed with the size powder or as a solution in the water, added during the process. Alkali silicates have proved suitable as size powder. Compared to the abovementioned thermosets or curable glues they have the advantage of not emitting any harmful fumes and also of incresing the fire resistance of the fibrebodies.
- the constitution of the alkali silicates or the ratio, L e. the mole ratio between silicon dioxide and alkali oxide can for sodium or potassium silicates suitably lie between 1,2 and 4,7 but also other ratios give usuable alkali silicate powders.
- a silicate powder suitable for that purpose, is spray-dried water glass.
- the latter is produced through spraying waterglass so it forms an aerosol, quickly being dried to powder in the hot air.
- Such a powder of sedium waterglass with ratio 3,3 contains such a high percentage of bound water, that it is quickly dissolved by furhter added water already at a temperature of about 100 oC.
- a condition precedent for the powder-glueing method is that the glue powder is evenly distributed over the fibres at the admixture and is then not separated from those during the airtransport to the moulder. This condition is met by adding a ' suitable amount of water - 10 to 100 % of the dry weight of the fibres - moistening the fibres to make the powder adhere.
- This admixture can be made by simple, mechanical stirring.
- a hardener transcending the alkali silicate to waterinsoluble silicates, can be added.
- Firchips are defibrated in a disk defibrator.
- the warm fibres are separated from the steam in a cyclone, from which they, by transport screw and conveyor belt, are taken to a cutter, which disperses them in an airstream, leading into a diffusor.
- spraydried sodium silicate powder with ratio 3,3 is blown into the fibre-air-stream and is mixed with the fibers, ratio of components being 10 - 25 parts silicate powder to 100 parts dry fibre.
- the moisture content of the fibre is 30 % at the injection into the diffusor.
- the fibre - powder - air stream goes from the diffusor into the moulder, forming a cake, which then is transmitted to a hot moulding press, where it is given its final form and is glued/dried to a firm disk
- Wood fibres from a defibrator are blown down into a mixer, where they are mixed with sodium silicate powder of the same type as in example 1 and with magnesium oxide, ratio of components being 8 parts silicate powder and 16 parts magnesium oxide powder to 100 parts dry fibre.
- the moisture content of the fibre is 35 % at the injection into the diffusor.
- the mixiuie is transmitted by conveyor to an ejector, which disperses it in air and injects it into a diffusor of a moulding machine, in which it is the formed, hot moulded hardened and dried to required fiberbody.
- the cake can also be dried and hardened in heat without being compressed Thus it gets appropriate density in order to be used as insulating material.
- magnesium oxide - silicate powder mixture a compounding of 10 parts silicate powder and 9 parts zink oxide to 100 parts dry fibre with the same moisture content as the above mentioned can be used
- fibres than wood fibres just produced can be used to manufacture products according to the invention.
- suitable fibres are paper - and paperreturn fibres, cotton- , flax- and hempfibres, syntetic polymer fibres, mineral fibres and others.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Forests & Forestry (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
L'invention se rapporte à un procédé de collage par voie sèche pour la fabrication d'éléments à base de fibres tels que disques, profilés, panneaux, tapis isolants, matériau d'emballage, etc. Ce procédé est basé sur le fait que la colle est composée de poudre de verre soluble, qui est mélangée avec les fibres, lesquelles ont été un peu humidifiées avant ou pendant le mélange, et soufflée dans un moule avec les fibres pour être estampée à chaud et former l'élément à base de fibres. Pendant le procédé, la poudre de colle est dissoute dans l'eau, transformée en forme plastique ou liquide pour agglomérer les fibres et est ensuite séchée et durcie pour former une composition solide pendant l'estampage. Pour rendre le procédé plus efficace, la poudre de silicate devrait contenir de l'eau, liée sous forme de liquide gélifié ou d'eau de cristallisation dans le silicate alcalin. On peut ainsi utiliser du verre soluble séché par pulvérisation comme poudre de colle. Afin d'améliorer l'imperméabilité des éléments à base de fibres, on peut ajouter un durcisseur, transformant le silicate alcalin en silicates insolubles dans l'eau. Les durcisseurs appropriés sont l'oxyde de magnésium, l'oxyde de zinc ou le blanc de titane.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9002781-4 | 1990-08-31 | ||
| SE9002781A SE467244B (sv) | 1990-08-31 | 1990-08-31 | Limningsmetod vid framstaellning av fiberkroppar enligt den torra metoden |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1992004169A1 true WO1992004169A1 (fr) | 1992-03-19 |
Family
ID=20380246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/SE1991/000570 WO1992004169A1 (fr) | 1990-08-31 | 1991-08-30 | Procede de collage par voie seche pour la fabrication d'elements a base de fibres |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU8534991A (fr) |
| SE (1) | SE467244B (fr) |
| WO (1) | WO1992004169A1 (fr) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996033057A1 (fr) * | 1995-04-21 | 1996-10-24 | Kühne, Michael | Procede de production de corps moules |
| WO2003104160A1 (fr) * | 2002-06-05 | 2003-12-18 | Van Baerle & Cie Ag | Materiau contenant une matiere cellulosique et du silicate |
| WO2004024824A1 (fr) * | 2002-09-06 | 2004-03-25 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Procede de fabrication de pieces usinees en fibres de bois ignifugees |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3302841A1 (de) * | 1983-01-28 | 1984-08-09 | Hans W. 7850 Lörrach Geisert | Schwerentflammbare platte o.dgl. und herstellungsverfahren dafuer |
-
1990
- 1990-08-31 SE SE9002781A patent/SE467244B/sv not_active IP Right Cessation
-
1991
- 1991-08-30 WO PCT/SE1991/000570 patent/WO1992004169A1/fr active Application Filing
- 1991-08-30 AU AU85349/91A patent/AU8534991A/en not_active Abandoned
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3302841A1 (de) * | 1983-01-28 | 1984-08-09 | Hans W. 7850 Lörrach Geisert | Schwerentflammbare platte o.dgl. und herstellungsverfahren dafuer |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996033057A1 (fr) * | 1995-04-21 | 1996-10-24 | Kühne, Michael | Procede de production de corps moules |
| US6007765A (en) * | 1995-04-21 | 1999-12-28 | Exori-Import-Export Gmbh & Co. Kg | Method of producing molded articles |
| WO2003104160A1 (fr) * | 2002-06-05 | 2003-12-18 | Van Baerle & Cie Ag | Materiau contenant une matiere cellulosique et du silicate |
| CH695855A5 (de) * | 2002-06-05 | 2006-09-29 | Baerle & Cie Ag | Werkstoff umfassend cellulosisches Material und Silikat. |
| WO2004024824A1 (fr) * | 2002-09-06 | 2004-03-25 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Procede de fabrication de pieces usinees en fibres de bois ignifugees |
| US7858005B2 (en) * | 2002-09-06 | 2010-12-28 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V. | Method for the production of fire-resistant wood fiber moldings |
Also Published As
| Publication number | Publication date |
|---|---|
| SE9002781D0 (sv) | 1990-08-31 |
| AU8534991A (en) | 1992-03-30 |
| SE9002781L (sv) | 1992-03-01 |
| SE467244B (sv) | 1992-06-22 |
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