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WO2008071539A1 - Plaque de support - Google Patents

Plaque de support Download PDF

Info

Publication number
WO2008071539A1
WO2008071539A1 PCT/EP2007/062850 EP2007062850W WO2008071539A1 WO 2008071539 A1 WO2008071539 A1 WO 2008071539A1 EP 2007062850 W EP2007062850 W EP 2007062850W WO 2008071539 A1 WO2008071539 A1 WO 2008071539A1
Authority
WO
WIPO (PCT)
Prior art keywords
fibers
fiberboard
moisture content
plate
coated
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.)
Ceased
Application number
PCT/EP2007/062850
Other languages
German (de)
English (en)
Inventor
Gerold Schneider
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.)
Fritz Egger GmbH and Co OG
Original Assignee
Fritz Egger GmbH and Co OG
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 Fritz Egger GmbH and Co OG filed Critical Fritz Egger GmbH and Co OG
Priority to EP07847377A priority Critical patent/EP2121256A1/fr
Publication of WO2008071539A1 publication Critical patent/WO2008071539A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off

Definitions

  • the invention relates to a method for producing a fiberboard as a carrier plate for direct-printing coated panels by the dry process. Furthermore, the invention relates to a fiber board made of wood fibers, in particular MDF or HDF board, as a support plate for the production of direct-coated coated panels.
  • MDF Medium Density Fiberboard
  • HDF boards High Density Fiberboard
  • the laminate coating which is usually realized using the DPL process, represents currently the most widely used variant.
  • DPL stands for "direct pressure laminate” and includes a process for the usually resin impregnated, dried papers, ie at least one decor paper if necessary with an overlay paper, under high heat and pressure with a carrier plate is pressed. From the plates coated in this way, the desired panels are then produced in a downstream production process.
  • hard particles for example corundum or silicon carbide particles, are introduced into the layer structure.
  • the quality of the optical quality and the required abrasion resistance are determined.
  • a particularly high optical quality is in turn characterized by a high resolution of the decor print and by a constant gloss level.
  • the invention thus sets itself the task of an improved fiber board, produced according to the Dry process, as a support plate for a panel coated by direct printing, as well as a method for its preparation to specify.
  • auxiliaries and additives are understood, for example, hardeners and accelerators, water repellents or fire protection and fungicidal agents.
  • binder and auxiliaries and additives in the blow-line, it is also possible to add these between the fiber dryer and the fiber bunker.
  • significant importance in compressing the glued and provided with additives fibers is the moisture content of the fibers during pressing of the plates. Moisture accomplishes heat transfer from the heated press plates via the near-surface zones to the core zone of the plate. Accordingly, the added binder can then react here as well, with the result that the plate acquires its mechanical properties.
  • the moisture is in a vaporous state.
  • the dry-laid fiberboard is therefore usually in Range from 3.5 to 5.0%.
  • the fibers provided with the binder are usually dried to a moisture content in front of the press of less than 10%.
  • the most significant disadvantage is the high degree of absorbency associated with low plate moisture, which causes the drying portions of the applied primer to diffuse very rapidly into the support plate and prevent regular film formation. Furthermore, it can be observed that at lower plate humidities, near-surface fibers are reinforced when a primer is applied get up and. so again prevent the formation of a continuous closed, smooth coating film. The consequence is that a repeated primer usually has to be combined with one or more intermediate sanding in order to achieve the necessary surface quality.
  • a support plate with a higher moisture content which thus no longer has the disadvantages described, can be produced by adding moisture to the fibers after they have been dried and before being pressed into a fiber plate.
  • an increase of the moisture to 12 to 20%, preferably to 13 to 18%, particularly preferably 14 to 16% an impermissibly high internal vapor pressure is not created which "burst" in the compression of such pretreated fibers despite a increased moisture content ⁇ fail and so economically HDF plates with a humidity of about about 6.0%, preferably of about about 6.5%, more preferably about about 7.0% can be prepared.
  • the increase in fiber moisture should be as regular as possible over the entirety of the fibers. A mere, superficial spraying of the fibers in front of the press is not suitable for this purpose.

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)
  • Paper (AREA)

Abstract

L'invention concerne un procédé de fabrication d'une plaque de fibres destinée à servir de plaque de support pour des panneaux revêtus dans un procédé d'impression directe à sec. Le procédé est essentiellement caractérisé en ce que les fibres sont humidifiées après avoir été séchées et avant d'être comprimées. L'invention concerne en outre une plaque de fibres fabriquée en fibres de bois, en particulier une plaque de MDF ou de HDF, utilisée comme plaque de support pour la fabrication de panneaux revêtus dans un procédé d'impression directe. La plaque de fibres présente une teneur en humidité supérieure à 6 %, de préférence supérieure à 6,5 % et de façon particulièrement préférable supérieure à 7,0 % par rapport au poids sec de la plaque de fibres. L'invention concerne également l'utilisation de cette plaque de fibres pour fabriquer des panneaux revêtus dans un procédé d'impression directe.
PCT/EP2007/062850 2006-12-11 2007-11-27 Plaque de support Ceased WO2008071539A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07847377A EP2121256A1 (fr) 2006-12-11 2007-11-27 Plaque de support

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610058612 DE102006058612A1 (de) 2006-12-11 2006-12-11 Optimierte Trägerplatte
DE102006058612.3 2006-12-11

Publications (1)

Publication Number Publication Date
WO2008071539A1 true WO2008071539A1 (fr) 2008-06-19

Family

ID=39156685

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/062850 Ceased WO2008071539A1 (fr) 2006-12-11 2007-11-27 Plaque de support

Country Status (3)

Country Link
EP (1) EP2121256A1 (fr)
DE (1) DE102006058612A1 (fr)
WO (1) WO2008071539A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010049777B4 (de) 2010-10-29 2017-10-05 Brav-O-Tech Gmbh Befeuchtungsanlage für Pressen
US9192898B2 (en) 2010-10-29 2015-11-24 Bravo-O-Tech Gmbh Wetting agents
DE102013205974A1 (de) 2013-04-04 2014-10-09 Brav-O-Tech Gmbh Flüssigkeitsauftragsanlage

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5063010A (en) * 1989-04-28 1991-11-05 G. Siempelkamp Gmbh & Co. Making pressed board
US5538676A (en) * 1993-10-01 1996-07-23 Maschinenfabrik J. Dieffenbacher Gmbh & Co. Process and plant for the continuous production of particleboards
WO1998041372A1 (fr) * 1997-03-18 1998-09-24 Wesser & Dueholm Procede de fabrication de panneaux de particules, de panneaux de fibres et de planches analogues
WO1999024233A1 (fr) * 1997-11-12 1999-05-20 J. M. Huber Corporation Prechauffage a la vapeur dans la fabrication de panneaux a copeaux orientes
DE10109316A1 (de) * 2001-02-27 2002-09-05 Dieffenbacher Gmbh Maschf Verfahren zur kontinuierlichen Herstellung von Holzwerkstoffplatten
EP1323509A1 (fr) * 2001-12-20 2003-07-02 Maschinenfabrik J. Dieffenbacher GmbH & Co. Procédé pour la fabrication en continu de panneaux en fibres lignocellulosiques
DE202005009342U1 (de) * 2005-06-14 2005-09-22 Panel Tuning Gmbh Befeuchtungseinrichtung
WO2006037644A2 (fr) * 2004-10-05 2006-04-13 Fritz Egger Gmbh & Co. Procede et dispositif pour produire une surface structuree et piece a surface structuree

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030127763A1 (en) * 2001-08-16 2003-07-10 Josef Stutz Mechanically glued board of wood material

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5063010A (en) * 1989-04-28 1991-11-05 G. Siempelkamp Gmbh & Co. Making pressed board
US5538676A (en) * 1993-10-01 1996-07-23 Maschinenfabrik J. Dieffenbacher Gmbh & Co. Process and plant for the continuous production of particleboards
WO1998041372A1 (fr) * 1997-03-18 1998-09-24 Wesser & Dueholm Procede de fabrication de panneaux de particules, de panneaux de fibres et de planches analogues
WO1999024233A1 (fr) * 1997-11-12 1999-05-20 J. M. Huber Corporation Prechauffage a la vapeur dans la fabrication de panneaux a copeaux orientes
DE10109316A1 (de) * 2001-02-27 2002-09-05 Dieffenbacher Gmbh Maschf Verfahren zur kontinuierlichen Herstellung von Holzwerkstoffplatten
EP1323509A1 (fr) * 2001-12-20 2003-07-02 Maschinenfabrik J. Dieffenbacher GmbH & Co. Procédé pour la fabrication en continu de panneaux en fibres lignocellulosiques
WO2006037644A2 (fr) * 2004-10-05 2006-04-13 Fritz Egger Gmbh & Co. Procede et dispositif pour produire une surface structuree et piece a surface structuree
DE202005009342U1 (de) * 2005-06-14 2005-09-22 Panel Tuning Gmbh Befeuchtungseinrichtung

Also Published As

Publication number Publication date
EP2121256A1 (fr) 2009-11-25
DE102006058612A1 (de) 2008-06-19

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