EP2388117A1 - Procédé et installation de fabrication d'une plaque en fibres de bois - Google Patents
Procédé et installation de fabrication d'une plaque en fibres de bois Download PDFInfo
- Publication number
- EP2388117A1 EP2388117A1 EP10005152A EP10005152A EP2388117A1 EP 2388117 A1 EP2388117 A1 EP 2388117A1 EP 10005152 A EP10005152 A EP 10005152A EP 10005152 A EP10005152 A EP 10005152A EP 2388117 A1 EP2388117 A1 EP 2388117A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wood
- cake
- press
- impregnating medium
- impregnating
- 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- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 239000002023 wood Substances 0.000 claims abstract description 23
- 229920002522 Wood fibre Polymers 0.000 claims abstract description 21
- 239000002025 wood fiber Substances 0.000 claims abstract description 21
- 238000003825 pressing Methods 0.000 claims abstract description 5
- 239000000853 adhesive Substances 0.000 claims abstract description 4
- 230000001070 adhesive effect Effects 0.000 claims abstract description 4
- 238000005470 impregnation Methods 0.000 claims description 24
- 239000000835 fiber Substances 0.000 claims description 17
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 9
- 229920000877 Melamine resin Polymers 0.000 claims description 7
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 6
- 239000004202 carbamide Substances 0.000 claims description 6
- 229920001807 Urea-formaldehyde Polymers 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 238000003892 spreading Methods 0.000 claims description 5
- 238000009833 condensation Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims description 3
- 239000004312 hexamethylene tetramine Substances 0.000 claims description 3
- 235000010299 hexamethylene tetramine Nutrition 0.000 claims description 3
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 2
- 239000007787 solid Substances 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 description 10
- 239000000654 additive Substances 0.000 description 8
- 239000010410 layer Substances 0.000 description 7
- 239000011230 binding agent Substances 0.000 description 4
- 238000009408 flooring Methods 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000011094 fiberboard Substances 0.000 description 3
- 239000011241 protective layer Substances 0.000 description 3
- 239000004640 Melamine resin Substances 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000002318 adhesion promoter Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000485 pigmenting effect Effects 0.000 description 1
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- 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
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
-
- 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
-
- 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
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
Definitions
- the invention relates to a method and plant for producing a wood-based panel, in particular a wood fiber board, are sprinkled with an adhesive wetted wood fibers or wood chips on an endlessly circulating conveyor belt to a cake, the cake of wood fibers or wood chips in a transport direction T to various processing stations promoted, compressed in a pre-press and then pressed under pressure and temperature influence in a hot press to a plate of desired thickness.
- Such a method is for example from the DE 10 2005 033 687 A1 known.
- long fibers In order to produce an MDF or HDF board according to this method, long fibers must first be produced in a defibration step, which can be done in an upstream process or immediately before the plant for producing the wood fiber boards. The coarse, long wood fibers are then applied with additives, such as flame retardants and water repellents. Subsequently, binder (urea-formaldehyde glue) is added via a blowline and the fibers are then dried with appropriate additives and the fiber sizing via a power tube dryer. Subsequently, the fiber mixture is sprinkled on a spreading device to an endless cake on the endless circulating conveyor belt.
- additives such as flame retardants and water repellents.
- binder urea-formaldehyde glue
- the loosely sprinkled mixed fiber cake is then fed from the conveyor belt to a cold pre-press and cold pre-compaction of the fiber web is achieved. Subsequently, the nonwoven fabric is fed back via the conveyor belt of a continuous hot press, in which it to a Plate of desired thickness is hot pressed.
- the press belts are advantageously coated with a release agent to prevent adhesion of the plates formed.
- the endlessly produced plates are then formatted and separated into individual plates and then assembled.
- MDF Medium Density Fiberboard
- HDF High Density Fiberboard
- properties may be, for example, the conductivity that is involved or desired for a fiberboard either in powder coating the panel itself or when the panel is to be used as a laminate flooring panel support and the flooring must have antistatic properties.
- the conductivity can be achieved by adding salts in the manufacturing process, for example in the refining process.
- Another desired property may be a fire retardant design.
- the EP 1 710 061 A1 discloses a method for continuously preheating a mat or mat. This steam is introduced into a mat of scattered wood chips or chips. This distributes itself within the mat and heats it up.
- the DE 20 50 530 A1 discloses a method of impregnating preformed sounding material with a binder.
- the Beschalungsmaterial consists of porous plates, on one surface of the binder is applied. The opposite surface is then subjected to a negative pressure, whereby the binder is pulled into the openings of the porous plate.
- the plates produced by the methods described above are subsequently further refined, for example by providing them with a decorative layer and a protective layer covering the decoration. These panels can then be further processed for example to furniture panels or wall, ceiling or floor panels.
- the decorative layer and the protective layer are laid on the previously prepared core, and then the core and the laid-up layers are pressed together (laminated) in a hot press.
- their press skin which is also referred to as press-patina or rotting layer, must be sanded before the decorative layer and the protective layer are applied, because in this area the heat input during hot pressing is so high that the adhesive Cures too quickly, which glue bridges at least partially break and make the layer vulnerable.
- the press skin is usually abraded by about 0.3 mm.
- the plates are made stronger than they are needed, which not only adversely affects the cost.
- the invention is therefore based on the problem described starting the task of specifying a resource-saving method for producing a direct-print wood-based panel.
- a generic method is characterized in that from the top of the cake from wood chips or wood fibers on the conveyor belt in front of the hot press vacuum impregnated an impregnating medium is applied, which is crosslinked during pressing.
- This impregnation medium prevents the formation of a press skin, so that the top of the prefabricated plate no longer needs to be sanded before the decorative layer is placed or printed, which not only results in material savings on wood material, but the manufacturing costs are also reduced by eliminating handling time, which was previously necessary for the grinding process for grinding the press skin, and also eliminates the cost of the abrasive belts.
- the impregnation medium influences the plate surface properties, such as strength, swelling behavior, and suction behavior before or during training, so that these measures no longer have to be taken during the subsequent finishing.
- the impregnation medium is applied to the chip or fiber cake behind the pre-press.
- the impregnating medium can be applied or sprinkled, for example by means of rollers, when it is firmly in particle form.
- the impregnating medium is preferably made of melamine resins in a proportion of 4 - 30%, particularly preferably 20% melamine. However, it may also consist of urea-formaldehyde resins with a low molar ratio of urea to formaldehyde of 1: ⁇ 1. Also, highly buffered condensation resins with urea or hexamine can be used for the impregnation medium.
- the impregnation medium can be liquid or powdery.
- the impregnation medium is liquid, it can be sprayed onto the fiber cake by means of nozzles or rollers.
- the device for applying the impregnation medium can be arranged stationary, which simplifies the construction of the production line and reduces its cost.
- the impregnation is applied at least partially.
- areas are created with / without impregnation (tempering), the tempered areas having deviating properties in relation to non-tempered areas.
- the impregnation medium can for example also influence the water absorption capacity of the finished pressed wood-based panel.
- the single figure shows the schematic arrangement of the individual components of the system.
- the chipper 12 the wood fibers or shavings are first prepared and, before they are dried in the drier 10, wet-glued at the point marked 11. After drying, the fibers or chips are glued again at the point marked 9 and then fed to the scattering station 8.
- the scattering station 8 the preferably glued with a urea-formaldehyde resin or melamine resin fibers or chips are sprinkled onto the endless in the direction of transport T driven conveyor belt 7 to a cake 6.
- the pre-press 4 the cake 6 is compressed, so cold pre-compressed.
- an impregnation station 3 is integrated, which consists of an over the conveyor belt 7phragaggregat, such as nozzles, consists.
- the application unit is stationary and immovable.
- an impregnating agent between the pre-press 4 and the hot press 2 is applied.
- a particulate impregnating agent is used, it is also possible to sprinkle it on the upper side of the cake 6 in an impregnating station 5 arranged stationary in front of the pre-press 4.
- an impregnating agent before the pre-compaction, the impregnating medium before the Sprinkle scattering station 8 on the conveyor belt 7 and then to scatter the fibers or chips.
- the impregnating agent can be applied fully or partially and also penetrate at different depths into the cake 6.
- the impregnating agent consists of a thermally postcrosslinking substance and is applied to the cake 6 immediately before pressing.
- Parallel to the conveyor belt 7 laterally arranged - not shown here - sheets can be provided to ensure that the scattered cake 6 is maintained in its shape when it is transported.
- On the surface of the wood-based panel 1 can be directly gefillert / printed.
- the impregnation station 3, 5 preferably consists of an applicator unit arranged above the conveyor belt 7 for an impregnating medium.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP10005152A EP2388117A1 (fr) | 2010-05-17 | 2010-05-17 | Procédé et installation de fabrication d'une plaque en fibres de bois |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP10005152A EP2388117A1 (fr) | 2010-05-17 | 2010-05-17 | Procédé et installation de fabrication d'une plaque en fibres de bois |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2388117A1 true EP2388117A1 (fr) | 2011-11-23 |
Family
ID=42807003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP10005152A Withdrawn EP2388117A1 (fr) | 2010-05-17 | 2010-05-17 | Procédé et installation de fabrication d'une plaque en fibres de bois |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP2388117A1 (fr) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2050530A1 (en) | 1970-01-29 | 1971-08-05 | Nat Gypsum Co | Impregnating porous board with binding agent |
| EP0548758A1 (fr) * | 1991-12-20 | 1993-06-30 | Bison-Werke Bähre & Greten GmbH & Co. KG | Panneau et procédé pour sa fabrication |
| DE19963203A1 (de) | 1999-12-27 | 2001-09-20 | Kunnemeyer Hornitex | Verfahren zum Herstellen von plattenförmigen Holzwerkstoffen und Platte aus Holzwerkstoff |
| EP1323509A1 (fr) * | 2001-12-20 | 2003-07-02 | Maschinenfabrik J. Dieffenbacher GmbH & Co. | Procédé pour la fabrication en continu de panneaux en fibres lignocellulosiques |
| DE10314974A1 (de) * | 2003-04-02 | 2004-10-21 | Glunz Ag | Verfahren zur Herstellung von Formkörpern mit einer zusammenhängende lignocellulosehaltige Fasern aufweisenden formgebenden Struktur und Formkörper |
| EP1710061A1 (fr) | 2005-04-08 | 2006-10-11 | Dieffenbacher GmbH & Co. KG | Méthode de préchauffage en continu d'un mat ou d'une natte, et installation utilisé |
| US20060240139A1 (en) * | 2001-02-09 | 2006-10-26 | Georgia-Pacific Resins, Inc. | Method and Apparatus for Introducing an Additive to a Composite Panel |
| DE102005033687A1 (de) | 2005-07-19 | 2007-01-25 | Steico Ag | Holzfaserplatte und Verfahren zur Herstellung einer Holzfaserplatte |
| US20070122644A1 (en) * | 2005-11-29 | 2007-05-31 | Timtek Australia Pty, Ltd. | System and Method For The Preservative Treatment of Engineered Wood Products |
-
2010
- 2010-05-17 EP EP10005152A patent/EP2388117A1/fr not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2050530A1 (en) | 1970-01-29 | 1971-08-05 | Nat Gypsum Co | Impregnating porous board with binding agent |
| EP0548758A1 (fr) * | 1991-12-20 | 1993-06-30 | Bison-Werke Bähre & Greten GmbH & Co. KG | Panneau et procédé pour sa fabrication |
| DE19963203A1 (de) | 1999-12-27 | 2001-09-20 | Kunnemeyer Hornitex | Verfahren zum Herstellen von plattenförmigen Holzwerkstoffen und Platte aus Holzwerkstoff |
| US20060240139A1 (en) * | 2001-02-09 | 2006-10-26 | Georgia-Pacific Resins, Inc. | Method and Apparatus for Introducing an Additive to a Composite Panel |
| EP1323509A1 (fr) * | 2001-12-20 | 2003-07-02 | Maschinenfabrik J. Dieffenbacher GmbH & Co. | Procédé pour la fabrication en continu de panneaux en fibres lignocellulosiques |
| DE10314974A1 (de) * | 2003-04-02 | 2004-10-21 | Glunz Ag | Verfahren zur Herstellung von Formkörpern mit einer zusammenhängende lignocellulosehaltige Fasern aufweisenden formgebenden Struktur und Formkörper |
| EP1710061A1 (fr) | 2005-04-08 | 2006-10-11 | Dieffenbacher GmbH & Co. KG | Méthode de préchauffage en continu d'un mat ou d'une natte, et installation utilisé |
| DE102005033687A1 (de) | 2005-07-19 | 2007-01-25 | Steico Ag | Holzfaserplatte und Verfahren zur Herstellung einer Holzfaserplatte |
| US20070122644A1 (en) * | 2005-11-29 | 2007-05-31 | Timtek Australia Pty, Ltd. | System and Method For The Preservative Treatment of Engineered Wood Products |
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