EP1412685A1 - Procede pour la production d'une planche en bois massif - Google Patents

Procede pour la production d'une planche en bois massif

Info

Publication number
EP1412685A1
EP1412685A1 EP02760217A EP02760217A EP1412685A1 EP 1412685 A1 EP1412685 A1 EP 1412685A1 EP 02760217 A EP02760217 A EP 02760217A EP 02760217 A EP02760217 A EP 02760217A EP 1412685 A1 EP1412685 A1 EP 1412685A1
Authority
EP
European Patent Office
Prior art keywords
boards
board
wood
drying
grinding
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
EP02760217A
Other languages
German (de)
English (en)
Other versions
EP1412685B1 (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

Links

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

  • Boards made of solid wood are often used in construction technology, for example for wall cladding or for floors. It is always the goal to give the respective wooden surface a "natural" look.
  • wooden boards are made for such purposes so that the wood is freshly chipped, i.e. H. "wet" condition with a water content of about 60% is sawn into boards. These boards are then air dried. During this drying process, the boards warp relatively strongly, so that they then have to be planed flat. Since the boards become very uneven during the drying process in air, about 60% to 70% of the board thickness of the wood is lost in the subsequent planing process. 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 wooden board that has aged for years. Such aged wooden boards have a slightly uneven surface due to temperature fluctuations, mechanical wear and the effects of moisture due to wet wiping, the unevenness of which can be seen by the eye.
  • the aim of the present invention is therefore to provide a method for producing boards from 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 therefore give the board an appearance like an "aged" wooden board.
  • the wooden boards are sawn freshly sawn, ie in the "wet" state, dried in a drying chamber, whereby they are held in a forced position by pressing, so that they cannot warp in air as when drying, but are kept flat become.
  • the pressing is preferably carried out on the entire board surface which is to become the visible surface and is between 50 kPa and 110 kPa (approx. 0.5 kp / cm 2 to 1 kp / cm 2 ). Drying takes place at a temperature between 60 ° C and 95 ° C, preferably at 80 ° C to 90 ° C and for about 20 hours. During this drying process, the wooden board does not remain completely flat despite the pressing.
  • this structure corresponds to a wooden board that makes an "aged" impression. According to the invention, this structure is obtained by not, as is customary, planing the boards smoothly after the drying process, but the structure of these slight unevenness is maintained by grinding the board according to the invention with a soft plate to remove the rough spots to smooth out.
  • the wood is preferably sanded with two counter-rotating sanding pads. If sanding in one direction with just one sanding disc, short fiber ends of the wood can still remain because they are brushed in one direction. If a further grinding takes place in the opposite direction, these fiber residues are also removed.
  • the surface of the boards is processed by milling in order to eliminate the sawing marks.
  • a planing machine is used to remove the saw marks, in which the board is carried out under a planing roller with, for example, four knives. Each of these knives exerts a certain pressure when struck on the wood, by which the board is slightly compressed at this point. If the wood gets wet again later and can then swell, these pressure points open again and the wood accordingly becomes slightly wavy. Because of its regularity, this ripple does not correspond to a natural impression of an aged wooden board. If, according to this embodiment of the invention, the wooden board is not planed but machined with a milling cutter, there are no such pressure points and thus there is also no risk of the wooden board being wavy.
  • the wooden boards are stacked on top of one another, a heating plate being placed between each two adjacent wooden boards.
  • This stack is located in a housing that is open at the top but otherwise closed on all sides.
  • 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 a heating plate between the successive boards, which cannot warp during the drying process, each board lies between two flat plates, so that there can be no major distortions within the board during the drying process.

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)
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
DE10137256A DE10137256A1 (de) 2001-07-31 2001-07-31 Verfahren zur Herstellung eines Brettes aus Massivholz
DE10137256 2001-07-31
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 true EP1412685A1 (fr) 2004-04-28
EP1412685B1 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
EP2554347A1 (fr) 2011-08-02 2013-02-06 Bimbo Holzwerk GmbH & Co. KG Procédé de fabrication d'éléments en bois

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
DE102010015992B4 (de) * 2010-03-16 2012-04-19 Wimmer Gmbh Verfahren zur Herstellung von Holzbrettern, welche eine der Holzstruktur entsprechende Oberfläche aufweisen
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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03012354A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2554347A1 (fr) 2011-08-02 2013-02-06 Bimbo Holzwerk GmbH & Co. KG Procédé de fabrication d'éléments en bois

Also Published As

Publication number Publication date
DE10137256A1 (de) 2003-02-13
WO2003012354A1 (fr) 2003-02-13
ATE339663T1 (de) 2006-10-15
EP1412685B1 (fr) 2006-09-13
ES2272756T3 (es) 2007-05-01
DE50208155D1 (de) 2006-10-26

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