EP1157796B1 - Apparatus for manufacturing wood sheets - Google Patents

Apparatus for manufacturing wood sheets Download PDF

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Publication number
EP1157796B1
EP1157796B1 EP01490018A EP01490018A EP1157796B1 EP 1157796 B1 EP1157796 B1 EP 1157796B1 EP 01490018 A EP01490018 A EP 01490018A EP 01490018 A EP01490018 A EP 01490018A EP 1157796 B1 EP1157796 B1 EP 1157796B1
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EP
European Patent Office
Prior art keywords
wood
sheets
sheet
wood sheets
cutting
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
EP01490018A
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German (de)
French (fr)
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EP1157796A1 (en
Inventor
Thierry Simon
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Individual
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Individual
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B44DECORATIVE ARTS
    • B44CPRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C5/00Processes for producing special ornamental bodies
    • B44C5/04Ornamental plaques, e.g. decorative panels, decorative veneers
    • B44C5/043Ornamental plaques, e.g. decorative panels, decorative veneers containing wooden elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27LREMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L5/00Manufacture of veneer ; Preparatory processing therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27LREMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L5/00Manufacture of veneer ; Preparatory processing therefor
    • B27L5/004Cutting strips from a conical surface

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Manufacturing & Machinery (AREA)
  • Forests & Forestry (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
  • Laminated Bodies (AREA)

Abstract

The manufacturing process of sheets of natural wood comprises providing a wood billet (1) obtained from a tree trunk having wood flaws (2). Sheets (3) are cut in the billet while retaining the flaws.

Description

L'invention concerne un écran à la lumière telle que défini par les revendications.The invention relates to a light shield as defined by the claims.

Toutefois, bien que plus particulièrement prévues pour de telles applications, les feuilles de bois conformes à l'invention pourront être utilisées de manière plus générale.However, although more particularly intended for such applications, the wood sheets according to the invention may be used more generally.

Actuellement, dans le domaine du travail du bois, il est connu d'employer des troncs d'arbres en les débarrassant de leurs extrémités et de leurs écorces pour constituer des pièces de bois, appelées billes.Currently, in the field of woodworking, it is known to use tree trunks by removing their ends and their bark to form pieces of wood, called logs.

On procède ensuite à la séparation des parties présentant des défauts du bois et on découpe les parties restantes en minces feuilles pour les applications souhaitées.The parts with wood defects are then separated and the remaining parts are cut into thin sheets for the desired applications.

On constate que de telles solutions génèrent une grande quantité de chutes induisant un faible rendement de matière. En outre, les décors obtenus grâce au veinage du bois restent peu variés.It is found that such solutions generate a large amount of falls inducing a low material yield. In addition, the decorations obtained thanks to the veining of the wood remain little varied.

Des solutions pour l'utilisation des chutes ont déjà été proposées. Il s'agit soit de les employer comme matériaux de chauffage, soit de les transformer en produits présentant une valeur ajoutée supérieure mais qui nécessitent alors du personnel et du matériel supplémentaires. Le coût de revient de l'ensemble des opérations est ainsi élevé.Solutions for the use of falls have already been proposed. It is either to use them as heating materials or to turn them into products with higher added value but which then require additional staff and equipment. The cost price of all operations is thus high.

On connaît du document CH 173,818 un procédé de fabrication de panneaux, par déroulage. Ces panneaux sont destinés à la fabrication de contre-plaqué et sont donc d'une épaisseur de l'ordre du centimètre.Document is known CH 173.818 a method of manufacturing panels, by peeling. These panels are intended for the manufacture of plywood and are therefore of a thickness of about one centimeter.

Un écran à la lumière est déjà décrit par exemple dans le document US-A-5,605,765 .A screen in the light is already described for example in the document US Patent 5,605,765 .

L'invention sera mieux comprise à la lecture de la description suivante, accompagnée des dessins en annexe qui en font partie intégrante et parmi lesquels :

  • la figure 1 décrit, en perspective, un exemple de billes de bois utilisées dans le procédé de fabrication conforme à l'invention,
  • la figure 2 illustre en vue de face un premier exemple de mise en oeuvre du procédé conforme à l'invention,
  • la figure 3 illustre en vue de face un autre exemple de mise en oeuvre du procédé conforme à l'invention.
The invention will be better understood on reading the following description, accompanied by the appended drawings which form an integral part thereof and among which:
  • the figure 1 describes, in perspective, an example of wood pellets used in the manufacturing process according to the invention,
  • the figure 2 illustrates in front view a first example of implementation of the method according to the invention,
  • the figure 3 illustrates in front view another example of implementation of the method according to the invention.

L'invention concerne tout d'abord un procédé de fabrication de feuilles de bois naturel.The invention relates first of all to a method of manufacturing natural wood sheets.

Comme illustré aux différentes figures, selon le procédé conforme à l'invention, on prévoit une bille de bois 1, obtenue à partir d'un tronc d'arbre, présentant des défauts 2 du bois, en surface ou même à coeur.As illustrated in the various figures, according to the process according to the invention, there is provided a wooden ball 1, obtained from a tree trunk, having wood defects 2, surface or even heart.

Toutes les essences de bois voulues pourront être utilisées. On pourra employer, par exemple, du bouleau, du charme, du châtaignier, du chêne, du cyprès, de l'érable, du figuier, du frêne, du hêtre, du micocoulier, du noisetier, du noyer, de l'olivier, de l'orne, du peuplier, du pin, du pommier, du sapin, du saule, du sorbier, du tilleul ou autres.Any desired wood species may be used. We can use, for example, birch, hornbeam, chestnut, oak, cypress, maple, fig, ash, beech, hackberry, hazelnut, walnut, olive, orne, poplar, pine, apple, fir, willow, mountain ash, linden or others.

Quant aux défauts, il pourra s'agir aussi bien, par exemple, d'altérations dans le veinage et/ou la coloration du bois ou de marques telles que celles connues de l'homme du métier sous le nom de lunure, roulure, gélivure, piqûre, gerce, gale, cannelure ou autres.As for defects, it may be as well, for example, alterations in the veining and / or coloring of wood or marks such as those known to those skilled in the art under the name of lunure, rolling, gelation , prick, crawl, scab, groove or others.

Selon l'invention, on découpe lesdites feuilles 3 dans ladite bille 1 en conservant lesdits défauts 2.According to the invention, said sheets 3 are cut in said ball 1 while retaining said defects 2.

On peut ainsi obtenir des décors indéfiniment renouvelés, grâce aux défauts du bois, ceci au sein du même processus. En outre, on limite la quantité de chutes produites.We can thus obtain indefinitely renewed decorations, thanks to the defects of the wood, this within the same process. In addition, it limits the amount of falls produced.

Selon un mode de réalisation avantageux, on séparera les parties sans défaut 4 de la bille 1 de ses parties avec défaut 5. On peut ainsi obtenir simultanément, dans les parties sans défaut 4, des feuilles de bois disponibles pour les applications connues telles que le placage, et, dans les parties avec défaut 5, des feuilles de bois disponibles pour de nouvelles applications.According to an advantageous embodiment, the flawless portions 4 of the ball 1 will be separated from its defective parts 5. It is thus possible to obtain simultaneously, in the non-defective parts 4, wood sheets available for known applications such as the veneer, and in parts with defect 5, wood sheets available for new applications.

Selon un premier mode de réalisation, on effectue ladite séparation préalablement à la découpe desdites feuilles 3 notamment en séparant lesdites billes en trois parties, une centrale et deux extrémales, les défauts étant généralement situés dans les parties extrémales des billes, puis en découpant lesdites parties extrémales.According to a first embodiment, said separation is carried out prior to the cutting of said sheets 3 in particular by separating said balls into three parts, a central and two extremals, the defects being generally located in the extremal portions of the balls, and then by cutting off said parts. extremals.

Selon un autre mode de réalisation, on découpe lesdites feuilles de bois dans la bille 1 conservée entière et, éventuellement, on sépare les parties sans défaut des parties avec défaut.According to another embodiment, said wood sheets are cut into the entire ball 1 stored and, optionally, the defect-free parts of the defective parts are separated.

Comme illustré à la figure 2, on réalise la découpe, par exemple, par tranchage, c'est-à-dire, par découpage de la bille 1 dans des plans parallèles à l'axe longitudinal de ladite bille 1, selon la flèche repérée 6.As illustrated in figure 2 the cutting is carried out, for example, by slicing, that is to say, by cutting the ball 1 in planes parallel to the longitudinal axis of said ball 1, according to the arrow marked 6.

Selon un autre mode de réalisation, illustré à la figure 3, on réalise la découpe par déroulage, c'est-à-dire, en faisant pivoter la bille 1 autour de son axe longitudinal, selon la flèche repérée 7.According to another embodiment, illustrated in figure 3 , the cutting is carried out by peeling, that is to say, by rotating the ball 1 about its longitudinal axis, according to the arrow marked 7.

A ce sujet, les moyens de coupe employés pour ladite opération de déroulage pourront éventuellement être orientés de façon inclinée par rapport à l'axe longitudinal desdites billes. Il sera ainsi possible d'obtenir des feuilles de bois présentant une forme sensiblement conique et/ou tronconique, notamment avantageuse pour la confection d'abat-jour.In this regard, the cutting means used for said unwinding operation may optionally be oriented in an inclined manner with respect to the longitudinal axis of said balls. It will thus be possible to obtain wood sheets having a substantially conical shape and / or frustoconical, particularly advantageous for making lampshades.

Les opérations de découpe sont effectuées, éventuellement, sur dosse, c'est-à-dire sur des billes 1 préalablement découpée radialement, par exemple, en quatre parties.The cutting operations are performed, optionally, on dosse, that is to say on balls 1 previously cut radially, for example, in four parts.

Plus largement, on pourra entendre par « découpage » toutes opérations de sciage ou autres.More broadly, it can be understood by "cutting" any sawing operations or other.

Avant découpage, ladite bille 1 pourra être trempée.Before cutting, said ball 1 may be quenched.

Après découpage, lesdites feuilles de bois 3 sont, notamment, mises à plat, séchées, massicotées et/ou empilées. Leur transport sera ainsi facilité.After cutting, said wood sheets 3 are, in particular, laid flat, dried, trimmed and / or stacked. Their transport will thus be facilitated.

Pour ce qui est du massicotage, son rôle sera d'égaliser les bords de chacune des feuilles et non, comme cela était le cas dans les procédés antérieurement connus, de systématiquement éliminer les défauts du bois restant.As far as the trimming is concerned, its role will be to equalize the edges of each of the sheets and not, as was the case in the previously known processes, to systematically eliminate the defects of the remaining wood.

L'invention concerne également les feuilles de bois naturel obtenues selon le procédé décrit plus haut. Elles pourront présenter une épaisseur, par exemple, de 5 à 10 dixièmes de millimètres, notamment en fonction des essences de bois, par exemple 5/10ème , 6/10ème ou 7/10ème de millimètres.The invention also relates to the natural wood sheets obtained according to the method described above. They may have a thickness, for example, from 5 to 10 tenths of a millimeter, in particular according to the species of wood, for example 5/10 th , 6/10 th or 7/10 th of millimeters.

L'invention concerne encore un article décoratif et/ou utilitaire constitué d'une telle feuille de bois et d'une feuille de matériau support fixée sur l'une de ses faces. Il pourra s'agir, par exemple, d'une feuille de matériaux synthétiques, tels que, notamment, polyphane, de tissus ou autres matières. Ladite feuille est éventuellement transparente ou translucide.The invention also relates to a decorative article and / or utility consisting of such a wooden sheet and a sheet of support material attached to one of its faces. It may be, for example, a sheet of synthetic materials, such as, in particular, polyphane, fabrics or other materials. Said sheet is optionally transparent or translucent.

L'invention concerne aussi une application de telles feuilles de bois et/ou de tels articles à la fabrication d'écrans à la lumière. Il pourra ainsi s'agir d'abat-jour. Lesdites feuilles de bois pourront encore être associées à un support en verre derrière lequel il sera possible de disposer une source lumineuse de façon à constituer une lampe décorative.The invention also relates to an application of such wood sheets and / or such articles to the manufacture of screens to light. It can thus be a shade. Said sheets of wood may also be associated with a glass support behind which it will be possible to have a light source so as to constitute a decorative lamp.

D'autres applications pourront encore être envisagés tels que des matériaux d'emballages, notamment pour compositions florales.Other applications may still be considered such as packaging materials, especially for floral compositions.

Selon de telles applications, lesdites feuilles de bois et/ou lesdits articles sont utilisées, tels quels. On peut ainsi se servir de leur souplesse et de leur transparence.According to such applications, said wood sheets and / or said articles are used, as is. We can use their flexibility and transparency.

Claims (3)

  1. A light shield comprising a wooden sheet of thickness ranging between 5 and 10 tenth-millimetres, cut from a wooden billet exhibiting apparent defects, wherein said wooden sheet is fixed on one of its faces to a supporting material sheet made of transparent or translucent synthetic material or to a glass support.
  2. A light shield according to claim (1), characterised in that it is a lampshade.
  3. A light shield according to claim (1) wherein the synthetic sheet is made of polyphane or fabric.
EP01490018A 2000-05-25 2001-05-25 Apparatus for manufacturing wood sheets Expired - Lifetime EP1157796B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0006685 2000-05-25
FR0006685A FR2809342B1 (en) 2000-05-25 2000-05-25 PROCESS FOR PRODUCING NATURAL WOOD SHEETS

Publications (2)

Publication Number Publication Date
EP1157796A1 EP1157796A1 (en) 2001-11-28
EP1157796B1 true EP1157796B1 (en) 2008-10-01

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Application Number Title Priority Date Filing Date
EP01490018A Expired - Lifetime EP1157796B1 (en) 2000-05-25 2001-05-25 Apparatus for manufacturing wood sheets

Country Status (5)

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EP (1) EP1157796B1 (en)
AT (1) ATE409556T1 (en)
DE (1) DE60135951D1 (en)
ES (1) ES2315265T3 (en)
FR (1) FR2809342B1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR667082A (en) * 1928-01-06 1929-10-12 Process for cutting veneer wood and veneer sheet
GB421979A (en) * 1933-06-29 1934-12-31 Klinger Johann Process for the manufacture of laminated joinery members
DE3217063C2 (en) * 1982-05-06 1984-04-19 Blomberger Holzindustrie B. Hausmann GmbH & Co KG, 4933 Blomberg Method for producing a veneer sheet
US4657789A (en) * 1985-10-15 1987-04-14 Nilsson Lars Method for the production of a veneer
US5605765A (en) * 1994-12-06 1997-02-25 Magma Industries (Ilum) Ltd. Decorative composite article and method of making a decorative pattern
US5881786A (en) * 1997-06-10 1999-03-16 Weyerhaeuser Company Method of producing wood strips for conversion into composite lumber products

Also Published As

Publication number Publication date
EP1157796A1 (en) 2001-11-28
ATE409556T1 (en) 2008-10-15
FR2809342B1 (en) 2002-09-06
DE60135951D1 (en) 2008-11-13
FR2809342A1 (en) 2001-11-30
ES2315265T3 (en) 2009-04-01

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