EP1412685B1 - Procede pour la production d'une planche en bois massif - Google Patents

Procede pour la production d'une planche en bois massif Download PDF

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Publication number
EP1412685B1
EP1412685B1 EP02760217A EP02760217A EP1412685B1 EP 1412685 B1 EP1412685 B1 EP 1412685B1 EP 02760217 A EP02760217 A EP 02760217A EP 02760217 A EP02760217 A EP 02760217A EP 1412685 B1 EP1412685 B1 EP 1412685B1
Authority
EP
European Patent Office
Prior art keywords
boards
drying
wood
board
sanding
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 - Lifetime
Application number
EP02760217A
Other languages
German (de)
English (en)
Other versions
EP1412685A1 (fr
Inventor
Torben Hansen
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.)
Schotten and Hansen GmbH
Original Assignee
Schotten and Hansen 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 Schotten and Hansen GmbH filed Critical Schotten and Hansen GmbH
Publication of EP1412685A1 publication Critical patent/EP1412685A1/fr
Application granted granted Critical
Publication of EP1412685B1 publication Critical patent/EP1412685B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
    • B27M1/003—Mechanical surface treatment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B7/00—Drying solid materials or objects by processes using a combination of processes not covered by a single one of groups F26B3/00 and F26B5/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2210/00—Drying processes and machines for solid objects characterised by the specific requirements of the drying good
    • F26B2210/16—Wood, e.g. lumber, timber

Definitions

  • the invention relates to a method for producing one or more boards of solid wood according to the preamble of claim 1.
  • wood boards for such purposes are made so that the wood in the fresh, d. H. "wet" condition with a water content of about 60% is sawn into boards. These boards are then air dried. In this drying process, the boards warp relatively strong, so they must then be planed plan. Since during the drying process in air, the boards are very uneven, go in the subsequent planing process about 60% to 70% of the plate thickness of the wood lost. The planed wood has a flat surface, so such a board is easily recognizable as a freshly made board. In many cases, however, it is desirable to use boards whose surface resembles a wood board aged over years. Such aged wooden boards have a slightly uneven surface due to temperature fluctuations, mechanical wear and moisture influences by wet wiping, the unevenness of which can be seen with the eye.
  • a method according to the preamble of claim 1 is known from US-A-3 986 268.
  • U.S. Patent 3,756,295 discloses a method of processing wooden boards to give their surface an appearance as if the board had been worked with an ax.
  • the board surface is provided with a plurality of arcuate, arranged at random intervals incisions.
  • the boards are guided through a device which is provided with circular, rotating disks, wherein cutting blades are arranged on these disks in the radial direction.
  • the plane of the slices runs obliquely to the surface of the board, so that arcuate cuts occur in the surface as the boards pass through. These cuts do not correspond to the wood structure but are randomly distributed.
  • the aim of the present invention is therefore to provide a method for producing boards made of solid wood, in which little wood material is lost and in particular the surface of the wood at the end of the manufacturing process has slight bumps that correspond to the wood structure and thus the board a look like in a "aged" wooden board.
  • the wood boards are sawed fresh after sawing, ie in the "wet" state, dried in a drying chamber, where they are held by pressing in a predicament, so that they can not warp as in a drying in air, but kept flat become.
  • the pressing is preferably applied to the entire board surface, which is to be the visible surface, and is between 50 kPa and 110 kPa (about 0.5 kp / cm 2 to 1 kp / cm 2 ).
  • the drying takes place at a temperature between 60 ° C and 95 ° C, preferably at 80 ° C to 90 ° C and preferably for about 20 hours. In this drying process, the wooden board is not completely flat despite the pressure.
  • this structure corresponds to a wooden board, which makes an "aged" impression.
  • this structure is obtained by not smoothly planing the boards after the drying process as usual, but the structure of these slight bumps is maintained by grinding the board according to the invention with a flexible grinding tool around the rough spots to smooth.
  • the grinding of the wood is preferably carried out with two opposing grinding wheels. If sanding in one direction with only one grinding wheel, short fiber ends of the wood can still stand still, because they are brushed in one direction. If a further grinding in the opposite direction, these fiber remnants are also removed.
  • the wood surface may further be advantageous to introduce color into the wood surface, for example gray paint, thus rendering the wood then looks like scrubbed.
  • the introduction of the ink is preferably carried out by wet grinding of the wood surface, wherein the colorant is added to the serving for wetting water.
  • the surface of the boards is machined by milling after sawing the tree trunk in wooden boards in order to eliminate the saw marks.
  • a planing machine is used to remove the saw marks, in which the board is carried out under a planer roll with four knives, for example. Each of these knives exerts a certain pressure when hitting the wood, which compresses the board slightly at this point. If the wood gets wet again later on and can then swell, these bruises return and the wood becomes slightly wavy. Due to its regularity, however, this waviness does not correspond to a natural impression of an aged wooden board. If the wooden board is not planed according to this embodiment of the invention, but edited with a milling machine, no such pressure points and thus not the risk of such waviness of the wooden board arise.
  • the wooden boards can be stacked on each other, wherein between two adjacent wooden boards each have a hot plate is placed.
  • This stack is located in an open-topped, but otherwise closed housing.
  • the stack formed in this way is compressed by mechanical pressure and the space in which the stack is located is evacuated to a pressure between 50 and 150 mbar. Since there is between the successive boards each have a hot plate that can not distort during the drying process, each board is between two flat plates, so that it can come during the drying process to no major faults within the board.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Drying Of Solid Materials (AREA)

Claims (5)

  1. Procédé pour la fabrication d'une ou de plusieurs planches en bois massif présentant les caractéristiques de procédé suivantes:
    a) sciage du bois dans l'état humide en une ou plusieurs planches,
    b) séchage des planches dans une chambre sèche, les surfaces des planches étant comprimées à une température comprise entre 60° et 95°C,
    caractérisé en ce que
    c) la surface visible des planches est fraisée de façon lisse après le sciage et avant le séchage pour l'élimination des traces de sciage,
    d) le séchage des planches s'effectue à une pression comprise entre 50 kPa et 110 kPa et une température de préférence située entre 80°C et 90°C, et
    e) la surface de la planche est poncée après le séchage avec un outil de ponçage flexible.
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    le ponçage est effectué avec deux meules contraires.
  3. Procédé selon les revendications 1 et 2,
    caractérisé en ce que
    de la couleur est introduite dans la surface du bois lors de l'opération de ponçage.
  4. Procédé selon la revendication 3,
    caractérisé en ce que,
    pour l'introduction de la couleur, la surface du bois est humectée pendant le ponçage avec de l'eau contenant du colorant.
  5. Procédé selon la revendication 1,
    caractérisé en ce que
    pour le séchage, on forme des piles constituées des planches à sécher, une plaque de chauffage étant posée à chaque fois entre deux planches voisines, de telle sorte que les piles ainsi formées sont comprimées, et que, pendant l'opération de séchage, la chambre sèche est soumise à un vide.
EP02760217A 2001-07-31 2002-07-02 Procede pour la production d'une planche en bois massif Expired - Lifetime EP1412685B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10137256 2001-07-31
DE10137256A DE10137256A1 (de) 2001-07-31 2001-07-31 Verfahren zur Herstellung eines Brettes aus Massivholz
PCT/EP2002/007304 WO2003012354A1 (fr) 2001-07-31 2002-07-02 Procede pour la production d'une planche en bois massif

Publications (2)

Publication Number Publication Date
EP1412685A1 EP1412685A1 (fr) 2004-04-28
EP1412685B1 true EP1412685B1 (fr) 2006-09-13

Family

ID=7693701

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02760217A Expired - Lifetime EP1412685B1 (fr) 2001-07-31 2002-07-02 Procede pour la production d'une planche en bois massif

Country Status (5)

Country Link
EP (1) EP1412685B1 (fr)
AT (1) ATE339663T1 (fr)
DE (2) DE10137256A1 (fr)
ES (1) ES2272756T3 (fr)
WO (1) WO2003012354A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010015992A1 (de) 2010-03-16 2011-09-22 Wimmer Gmbh Verfahren zur Herstellung von Holzbrettern, welche eine der Holzstruktur entsprechende Oberfläche aufweisen

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1026373C2 (nl) * 2004-06-10 2005-12-14 Houtindustrie Schijndel B V Werkwijze voor het behandelen van houtdelen.
FR2900859A1 (fr) * 2006-05-12 2007-11-16 Prodeo Soc Procede de traitement du bois et dispositif correspondant
EP2554347B1 (fr) 2011-08-02 2013-10-02 Bimbo Holzwerk GmbH & Co. KG Procédé de fabrication d'éléments en bois
CN106271965B (zh) * 2016-08-31 2018-06-22 嘉兴市申豪塑胶有限公司 一种木皮打磨烘干一体机
CN108177209B (zh) * 2017-12-29 2019-03-29 南京林业大学 一种木质材料压缩密实化的方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2387595A (en) * 1943-08-02 1945-10-23 Brunswick Balke Collender Co Method and apparatus for drying lumber
US3756295A (en) * 1972-06-05 1973-09-04 Timbercraft Inc Device for simulating a hand hewn surface
AR204636A1 (es) * 1973-09-17 1976-02-20 Koppelman Edward Procedimiento y un aparato para secar madera

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010015992A1 (de) 2010-03-16 2011-09-22 Wimmer Gmbh Verfahren zur Herstellung von Holzbrettern, welche eine der Holzstruktur entsprechende Oberfläche aufweisen
AT509668A3 (de) * 2010-03-16 2012-01-15 Wimmer Gmbh Wohnkultur Mit Echtholz Verfahren zur herstellung von holzbrettern, welche eine der holzstruktur entsprechende oberfläche aufweisen
DE102010015992B4 (de) * 2010-03-16 2012-04-19 Wimmer Gmbh Verfahren zur Herstellung von Holzbrettern, welche eine der Holzstruktur entsprechende Oberfläche aufweisen
AT509668B1 (de) * 2010-03-16 2013-02-15 Wimmer Gmbh Wohnkultur Mit Echtholz Verfahren zur herstellung von holzbrettern, welche eine der holzstruktur entsprechende oberfläche aufweisen

Also Published As

Publication number Publication date
WO2003012354A1 (fr) 2003-02-13
EP1412685A1 (fr) 2004-04-28
ES2272756T3 (es) 2007-05-01
DE50208155D1 (de) 2006-10-26
DE10137256A1 (de) 2003-02-13
ATE339663T1 (de) 2006-10-15

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