EP3098043A1 - Procede de production d'un panneau en fibres presentant des caracteristiques mecaniques et chimiques ameliorees - Google Patents

Procede de production d'un panneau en fibres presentant des caracteristiques mecaniques et chimiques ameliorees Download PDF

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Publication number
EP3098043A1
EP3098043A1 EP16165123.7A EP16165123A EP3098043A1 EP 3098043 A1 EP3098043 A1 EP 3098043A1 EP 16165123 A EP16165123 A EP 16165123A EP 3098043 A1 EP3098043 A1 EP 3098043A1
Authority
EP
European Patent Office
Prior art keywords
wood fiber
fiberboard
fiber board
pressure difference
fibreboard
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.)
Granted
Application number
EP16165123.7A
Other languages
German (de)
English (en)
Other versions
EP3098043B1 (fr
Inventor
Gerhard Stahl
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.)
Cefla Deutschland GmbH
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Cefla Deutschland GmbH
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 Cefla Deutschland GmbH filed Critical Cefla Deutschland GmbH
Publication of EP3098043A1 publication Critical patent/EP3098043A1/fr
Application granted granted Critical
Publication of EP3098043B1 publication Critical patent/EP3098043B1/fr
Active legal-status Critical Current
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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
    • B27N7/00—After-treatment, e.g. reducing swelling or shrinkage, surfacing; Protecting the edges of boards against access of humidity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/02—Processes; Apparatus
    • B27K3/08—Impregnating by pressure, e.g. vacuum impregnation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/02—Processes; Apparatus
    • B27K3/0278—Processes; Apparatus involving an additional treatment during or after impregnation
    • B27K3/0285—Processes; Apparatus involving an additional treatment during or after impregnation for improving the penetration of the impregnating fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K2200/00—Wooden materials to be treated
    • B27K2200/10—Articles made of particles or fibres consisting of wood or other lignocellulosic material

Definitions

  • the invention relates to a method for producing a fiberboard with improved chemical and mechanical properties, this can, for.
  • a fiberboard with improved chemical and mechanical properties
  • this can, for.
  • a wood fiber board is used as an application example.
  • wood fiber boards For the production of furniture, door leaves and the like, it is known to use wood fiber boards. These consist of compressed wood fiber boards, which usually have a density of 450 to 1000 kg / m 3 after the pressing process. In a conventional, not partially post-cured by nachvernetzendes polyurethane wood fiber board, it is necessary this to produce a high-quality paint surface several times, that is usually five to six times to paint, with grinding between the individual painting steps are required. Even more complex is the processing of the wood fiber board, provided that a structured surface such as the milling of grooves, cassettes and the like takes place. As a result, the surface of the wood fiber board, for example in the area of the grooves, cassettes porous because you milled through the denser top layer in the less dense middle layer. By painting z. As with water-soluble UV coatings, water-based paints or the like, the fibers are on, so that an elaborate post-processing is often required by manual grinding.
  • This method also has the disadvantage that prior to processing the wood fiber board, the points of processing must be defined exactly. It is not possible with this method to produce a wood fiber board in which the type of machining as the milled grooves and contours actually in the plate will be determined later.
  • the object of the invention is to provide a method for producing a fiberboard, in particular a hardened wood fiber board, which can be edited individually, that is, at which the machining contours can be determined only at a later date.
  • liquid hardening material is applied over its entire surface to an upper side of the fiberboard.
  • 400-800 ml, in particular 500-600 ml of liquid impregnating material per square meter with a plate thickness of 6 - 10 mm, in particular 7 - 9 mm applied to the top of the wood fiber board with a smaller plate thickness relatively less impregnation material is applied. If the plate thickness is reduced by half, the applied amount of impregnating agent is reduced by 50%.
  • an application of impregnating material takes place on both upper sides. After the application of the material on a first top and create the pressure difference therefore takes place in a preferred embodiment of the invention in a next step, turning the plate, so that the previous bottom to the new top and the previous top is the new bottom. Subsequently, material is again applied to the now new top, wherein the amount of material again corresponds in dependence on the plate thickness of the order amount described above.
  • the mechanical properties of the plate can be significantly improved.
  • the plate preferably has a density of 700-1100 kg / m 3 , in particular 800-1000 kg / m 3 .
  • the method according to the invention suck the impregnating agent relatively deep, in particular completely in the wood fiber board. This has the advantage that the mechanical properties of the plate are greatly improved, with only a small amount of impregnating material must be used.
  • the times for which a pressure difference is applied are at the first suction, i. before turning the plate 70 - 110 s, in particular 80 - 100 s. If, in a preferred embodiment, a turning of the plate and application of material to the then new top, the sucking or pressing this material is then for 10 - 25 s, in particular 15 - 20 s. Despite being soaked or impregnated with impregnating material from both sides, only a very small amount of material is sucked out of the plate. This amount is negligible.
  • the pressure difference is generated by means of a vacuum chamber extending over the entire underside of the fibreboard.
  • a vacuum chamber extending over the entire underside of the fibreboard.
  • the impregnating material it is preferable to use a self-curing system, a post-crosslinking polymer, or the like.
  • a two-component material can be used which cures z.
  • a polyurethane with isocyanate as a hardener component.
  • the polyurethane is provided with an isocyanate which reacts in conjunction with water.
  • the water in this case is the residual moisture of the MDF board.
  • the reaction time is set very long and is preferably about 3 days.
  • the plates can be stacked after treatment and do not stick together.
  • the hardening material used preferably has a viscosity of 10 to 80 s measured in the DIN 4 measuring cup.
  • the preferred pressure difference between the top and the bottom of the wood fiber board is preferably in the range of 0.8 to 1.2 bar, which is particularly dependent on the air pressure. Since it is particularly preferred that only a suction takes place, the pressure difference is a maximum in the range of about 1 bar, as it is an open system.
  • the provision of only a vacuum chamber on the underside of the wood fiber board has the advantage that a pressure chamber on the top of the wood fiber board can be omitted.
  • the differential pressure is generated by at least one vacuum pump which is connected to the vacuum chamber.
  • the at least one vacuum pump or the plurality of vacuum pumps together have a suction capacity of 700 to 1200 m 3 / h and in particular 800 to 1000 m 3 / h. This suction power refers to an area of 1 m 2 .
  • the impregnating or hardening material is sucked or pressed in over a range of at least 3 mm, in particular completely into the wood fiber board. This is the case in particular when applying and pressing in or sucking in the impregnating material from both sides.
  • the suction time is between 20 and 90 s depending on the penetration depth.
  • a fibreboard 10 made by a conventional pressing method is sprayed at a first station by means of a sprayer 12 on a top 14 with hardening material.
  • the spray head 16 extending over the entire width of the wood fiber board 10 is moved continuously in the direction of an arrow 18 over the entire length of the wood fiber board 10.
  • the wood fiber board is transported in the direction of an arrow 22 in the next processing station.
  • the wood-fiber board rests on a vacuum chamber 26 formed by, for example, a rectangular frame 24 extending at the edge of the wood-fiber board 10.
  • the vacuum chamber 26 is connected to three vacuum pumps 28.
  • a pressure of about 1000 mbar in the vacuum pump chamber 26 and thus at an underside 25 of the wood fiber board 10 is generated over a period of about 90 seconds. This results in a full-surface suction of the arranged on the upper side 14 of the wood fiber board 10 hardening material.
  • the wood fiber board 10 can be processed individually after curing of the material.
  • an individual profiling and structuring of the surface of the fibreboard can take place by introducing grooves and the like.
  • a complex, especially manual regrinding is no longer required before coating the surface with paint or the like.
  • a particularly preferred embodiment of the invention takes place after applying and sucking or pressing of impregnating material on the top 14 turning the wood fiber board, so that the bottom 25 to the new top and the top 14 is the new bottom. This is followed, in turn, by a complete application of liquid hardening material and a corresponding sucking or pressing in as described above.
EP16165123.7A 2015-04-17 2016-04-13 Procede de production d'un panneau en fibres presentant des caracteristiques mecaniques et chimiques ameliorees Active EP3098043B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015206941.9A DE102015206941A1 (de) 2015-04-17 2015-04-17 Verfahren zum Herstellen einer Faserplatte mit verbesserten chemischen und mechanischen Eigenschaften

Publications (2)

Publication Number Publication Date
EP3098043A1 true EP3098043A1 (fr) 2016-11-30
EP3098043B1 EP3098043B1 (fr) 2023-06-07

Family

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EP16165123.7A Active EP3098043B1 (fr) 2015-04-17 2016-04-13 Procede de production d'un panneau en fibres presentant des caracteristiques mecaniques et chimiques ameliorees

Country Status (3)

Country Link
US (1) US20160303761A1 (fr)
EP (1) EP3098043B1 (fr)
DE (1) DE102015206941A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11203224B2 (en) 2018-08-30 2021-12-21 Interface, Inc. Digital printing for flooring and decorative structures

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900017324A1 (it) 2019-09-26 2021-03-26 Cefla Deutschland Gmbh Processo per preparare un pannello rinforzato e/o a ritardo di fiamma
IT201900017288A1 (it) 2019-09-26 2021-03-26 Cefla Deutschland Gmbh Processo per preparare bordi di pannelli a prova di acqua, rinforzati e/o a fiamma ritardata

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19963203A1 (de) 1999-12-27 2001-09-20 Kunnemeyer Hornitex Verfahren zum Herstellen von plattenförmigen Holzwerkstoffen und Platte aus Holzwerkstoff
EP2168738A1 (fr) * 2008-09-26 2010-03-31 Flooring Technologies Ltd. Procédé de fabrication d'une plaque en fibres de bois et dispositif de fabrication de plaques en fibres de bois
EP2623282A1 (fr) * 2012-01-31 2013-08-07 Falquon GmbH Procédé d'imprégnation de plaques de matière première

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5916960A (en) * 1993-12-21 1999-06-29 The Sherwin-Williams Company Water-based, storage stable, self-curing coating composition
US6620459B2 (en) * 2001-02-13 2003-09-16 Houston Advanced Research Center Resin-impregnated substrate, method of manufacture and system therefor
US6596063B2 (en) * 2001-05-18 2003-07-22 Markus Rettenbacher Impregnated wood
EP3693144B1 (fr) * 2011-01-06 2021-05-05 Flooring Technologies Ltd. Procédé et dispositif de traitement partiel de la surface ou de la coupe transversale complète d'une plaque en matériau dérivé du bois ou d'un non-tissé en matériau dérivé du bois précomprimé ou d'un gâteau en fibre de bois

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19963203A1 (de) 1999-12-27 2001-09-20 Kunnemeyer Hornitex Verfahren zum Herstellen von plattenförmigen Holzwerkstoffen und Platte aus Holzwerkstoff
EP2168738A1 (fr) * 2008-09-26 2010-03-31 Flooring Technologies Ltd. Procédé de fabrication d'une plaque en fibres de bois et dispositif de fabrication de plaques en fibres de bois
EP2623282A1 (fr) * 2012-01-31 2013-08-07 Falquon GmbH Procédé d'imprégnation de plaques de matière première

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11203224B2 (en) 2018-08-30 2021-12-21 Interface, Inc. Digital printing for flooring and decorative structures
US11697303B2 (en) 2018-08-30 2023-07-11 Interface, Inc. Digital printing for flooring and decorative structures

Also Published As

Publication number Publication date
US20160303761A1 (en) 2016-10-20
DE102015206941A1 (de) 2016-11-10
EP3098043B1 (fr) 2023-06-07

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