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EP2121255B1 - Procédé de production de copeaux de bois plats - Google Patents

Procédé de production de copeaux de bois plats Download PDF

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Publication number
EP2121255B1
EP2121255B1 EP08715659A EP08715659A EP2121255B1 EP 2121255 B1 EP2121255 B1 EP 2121255B1 EP 08715659 A EP08715659 A EP 08715659A EP 08715659 A EP08715659 A EP 08715659A EP 2121255 B1 EP2121255 B1 EP 2121255B1
Authority
EP
European Patent Office
Prior art keywords
product
cutting
treatment
hydrothermal treatment
blade
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.)
Revoked
Application number
EP08715659A
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German (de)
English (en)
Other versions
EP2121255A1 (fr
Inventor
Robert Loth
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.)
Individual
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Individual
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Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=39277936&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2121255(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of EP2121255A1 publication Critical patent/EP2121255A1/fr
Application granted granted Critical
Publication of EP2121255B1 publication Critical patent/EP2121255B1/fr
Priority to CY20101101121T priority Critical patent/CY1111244T1/el
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
    • B27L11/02—Manufacture of wood shavings, chips, powder, or the like; Tools therefor of wood shavings or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
    • B27L11/005—Tools therefor

Definitions

  • the invention relates to a method for producing flat chips made of wood, also called "OS chips” ("Oriented Strand”).
  • Structure-oriented wood-based materials are special lignocellulose-containing plates or molded parts with directed mechanical and hygric properties.
  • LSL, PSL and especially OSB are expected.
  • OSB is the structure-oriented wood-based material with the greatest economic importance. Due to the shape and size of the beaches, the corresponding wood-based materials have high mechanical properties. They are therefore particularly useful as construction elements in construction.
  • the method is, however, capable of improvement. This concerns above all the quality of the individual Flachspanes. This should be even higher quality if possible in terms of its shape and its surface. Also, when machining a maximum of high-quality flat chips are created, but only a minimum of fines content. Finally, the energy requirement should be minimized.
  • the invention has for its object to provide a method by which a beach material from lumpy pieces of wood (precursors such as Maxichips and flat chips) can be produced, which contains high shares of pronounced flat strands and low fines. Furthermore, the demand for cutting energy should be minimal.
  • the essential ideas of the invention relate to the shape of the precursor and the provision of a further treatment step: namely, the precursor is subjected to an intermediate treatment with the action of heat and moisture before it is further treated mechanically.
  • the mentioned treatment with moisture and heat is applied to the precursor (Maxichip) after chopping. It can be combined with the application of superatmospheric pressure.
  • any heat sources may be used, such as microwave or infrared devices. Also, a hot water treatment or steam treatment is considered.
  • the entire process can be carried out batchwise or continuously.
  • screw conveyors When working continuously, the use of screw conveyors is conceivable.
  • the screws can be fed with a woodchip-water mixture.
  • the pressure can be generated by a butterfly valve at the end of the screw conveyor having a limited outlet gap releases, and thus builds up a pressure in the screw conveyor.
  • a steam treatment can take place.
  • the application of negative pressure or pressure is applicable.
  • a pre-shredding takes place, for example in a shredder.
  • station 102 a hacking takes place.
  • the precursor is produced. It is at least approximately rod-shaped.
  • treatment with moisture and heat takes place.
  • the treatment may consist in a dip in hot water.
  • the water has a temperature above 50 ° C, for example 60, 70, 80, 90, 100 ° C.
  • the residence time is between 3 and 30 minutes. Even longer periods are possible, for example one hour, two hours and so on.
  • the wet-hot treatment can also take place under superatmospheric or subatmospheric pressure, thus in a closed vessel.
  • the precursor - thus the chips - completely saturated.
  • the precursor is pre-classified.
  • OS chips with a chip thickness of 0.2 to 0.8 mm, preferably 0.2 to 0.6 mm.
  • the chipping is followed by indulgence in station 106.
  • the chipper comprises a rotor 1 which is driven by a shaft 2.
  • the rotor 1 contains a ring of axially parallel blades 3.
  • a knife basket with likewise axially parallel blades 4 surrounds the rotor 1.
  • Rotor 1 and knife basket are in turn arranged in a housing 5 and jointly enclosed by this.
  • Housing 5 has an inlet 6 for the wood chips to be supplied and an outlet for the finished chip.
  • FIG. 3 illustrates in two places a rod-shaped precursor 20. This is ordered in the present case as a regular rectangular block. Instead, however, this precursor could also be designed differently, for example, have irregular boundary surfaces. It is only important that this precursor 20 is more or less rod-shaped, that is, has a longitudinal extent that is greater than the transverse extensions in planes perpendicular thereto.
  • the precursor 20 is fed to the shaft-shaped inlet 6 - see arrow. It then passes into the space enclosed by the rotor 1 interior.
  • the precursor 20 - automatically or by a corresponding orientation device - such that it extends mainly to the longitudinal axis of the rotor shaft 2, and thus more or less parallel to the blades 4.
  • the precursor has a considerable size, in particular a considerable length compared with those wood chips that are supplied to the usual knife ring chipper.
  • FIG. 4 In FIG. 4 is shown in an axis-perpendicular section a knife package. This knife package is part of the knife ring of the machine.
  • Each knife package is constructed as follows: A support block 10 carries a cutting blade 11 which is fixed by means of a clamping plate 12 and a screw 13 on the support block 10.
  • Each support block 10 has a wear surface 10.1.
  • the decisive factor is that these wearing surfaces 10.1 facing the machine axis are approximately flat and thus not concentric as in the prior art.
  • the wear surface is 10.1 as in the case of FIG. 4 formed from a wear plate 10.2, which in turn is attached to the rest of the support block 10.
  • the wear surface can also be formed from a wear layer that has been produced by applying a wear layer, preferably by build-up welding or spraying and subsequent grinding.
  • a razor 14 is provided which is fixed on the side opposite the cutting blade 11 side of the supporting block 10, and which cooperates with the cutting blade of the adjacent blade package. Also, a wear plate is conceivable in which the hanger is integrated and takes over its function.

Landscapes

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

Claims (7)

  1. Procédé de fabrication de copeaux plats pour matériaux dérivés du bois orientés structure, avec les méthodes de procédé suivantes :
    1.1 Un produit primaire est fabriqué à partir d'un matériau contenant de la lignocellulose
    1.2 Le produit primaire possède une longueur comprise entre 20 et 200 mm ;
    1.3 Le produit primaire est soumis à un traitement hydrothermal, comprenant une thermothérapie ainsi qu'un traitement par humidification ;
    1.4 La durée d'application est d'au moins trois minutes et la température d'application est d'au moins 40 °C.
    1.5 Le produit primaire est soumis à un enlèvement de copeaux ou un fendage
  2. Procédé selon la revendication 1, caractérisé en ce que de la chaleur sèche ou de la vapeur ou de l'eau chaude ou un bain marie ou un traitement par micro-ondes ou un traitement par haute fréquence est appliqué lors du traitement hydrothermal.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le traitement hydrothermal du produit primaire a lieu avant la mise en copeaux ou le fendage ou pendant la mise en copeaux ou le fendage.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que le produit primaire présente une humidité atro supérieure à 35 % après le traitement hydrothermal.
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que le traitement hydrothermal a lieu avec une pression sur-atmosphérique ou sous-atmosphérique.
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que l'enlèvement de copeaux du produit primaire a lieu dans des enleveurs de copeaux à lames montées sur anneau, des enleveurs de copeaux à lames montées sur hélice ou des enleveurs de copeaux à disques.
  7. Procédé selon la revendication 6, caractérisé selon les caractéristiques suivantes :
    7.1 Le produit primaire (20) est alimenté par un enleveur de copeaux, comprenant une multitude de lames (4) qui s'articulent sur un anneau à lame, dont le tranchage se déroule au moins de façon approximativement parallèle à l'axe de l'anneau et qui enclavent un espace de travail ;
    7.2 Le produit primaire (20) est déplacé autour de l'axe de l'anneau à lames en rotation, ajusté pendant ce temps de la sorte qu'il soit pour l'essentiel parallèle à l'axe de l'anneau et que la force centrifuge appuie sur le tranchage de la lame (4) ;
    7.3 Les paramètres opératoires comme la forme de la lame, l'angle de la lame, sont choisis de telle façon qu'ils produisent des copeaux plats avec une épaisseur de copeau de 0,2 à 0,8 mm, de préférence de 0,2 à 0,6 mm ;
    7.4 Une phase de dépoussiérage pneumatique est placée en amont de la mise en copeaux afin de ne laisser passer que des produits primaires de dimension déterminée.
    7.5 Une phase de classification est montée en aval de la mise en copeaux afin de classer les copeaux selon des critères de forme, dimension ou poids.
EP08715659A 2007-01-25 2008-01-25 Procédé de production de copeaux de bois plats Revoked EP2121255B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CY20101101121T CY1111244T1 (el) 2007-01-25 2010-12-06 Μεθοδος κατασκευης πλακας απο τεμαχιδια ξυλου

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007003698A DE102007003698B3 (de) 2007-01-25 2007-01-25 Verfahren zum Herstellen von Flachspänen aus Holz
PCT/EP2008/000563 WO2008089989A1 (fr) 2007-01-25 2008-01-25 Procédé de production de copeaux de bois plats

Publications (2)

Publication Number Publication Date
EP2121255A1 EP2121255A1 (fr) 2009-11-25
EP2121255B1 true EP2121255B1 (fr) 2010-10-20

Family

ID=39277936

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08715659A Revoked EP2121255B1 (fr) 2007-01-25 2008-01-25 Procédé de production de copeaux de bois plats

Country Status (10)

Country Link
US (1) US20100126630A1 (fr)
EP (1) EP2121255B1 (fr)
CN (1) CN101610881A (fr)
AT (1) ATE485144T1 (fr)
CA (1) CA2676638A1 (fr)
CY (1) CY1111244T1 (fr)
DE (2) DE102007003698B3 (fr)
ES (1) ES2351180T3 (fr)
RU (1) RU2447989C2 (fr)
WO (1) WO2008089989A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114939912B (zh) * 2022-06-14 2022-12-16 安吉竹能生物质能源厂(普通合伙) 一种刨花装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2874909A (en) * 1953-10-14 1959-02-24 Pallmann Ludwig Process and device for producing flat wood shavings
DE1171143B (de) * 1962-02-14 1964-05-27 Max Himmelheber Dipl Ing Verfahren und Vorrichtung zur Gewinnung flacher Holzspaene fuer die Herstellung von Holzspanplatten
SE393763B (sv) * 1973-10-25 1977-05-23 Iggesunds Bruk Ab Knivanordning for fliskuggmaskin
DE19622421A1 (de) * 1996-06-04 1997-12-11 Fraunhofer Ges Forschung Verfahren zur Aufbereitung von Altholz
GB9625068D0 (en) * 1996-12-02 1997-01-22 Marlit Ltd Method for production of lignocellulosic composite materials
DE19900566B4 (de) * 1999-01-09 2005-03-24 B. Maier Zerkleinerungstechnik Gmbh Messerring-Zerspaner zum Zerspanen von Hackschnitzeln
DE10058626A1 (de) * 2000-11-25 2002-06-06 Maier Zerkleinerungstech Gmbh Verfahren und Vorrichtung zum Erzeugen von Spänen aus Holz
US20070151662A1 (en) * 2005-12-23 2007-07-05 Huber Engineered Woods L.L.C. Integrated process for simultaneous manufacture of oriented strand lumber and board products
AR088050A1 (es) * 2011-09-28 2014-05-07 Titan Wood Ltd Paneles de fibras de densidad media

Also Published As

Publication number Publication date
WO2008089989A1 (fr) 2008-07-31
ES2351180T3 (es) 2011-02-01
RU2447989C2 (ru) 2012-04-20
DE502008001588D1 (de) 2010-12-02
EP2121255A1 (fr) 2009-11-25
ATE485144T1 (de) 2010-11-15
DE102007003698B3 (de) 2008-05-15
CY1111244T1 (el) 2015-06-11
CN101610881A (zh) 2009-12-23
US20100126630A1 (en) 2010-05-27
CA2676638A1 (fr) 2008-07-31
RU2009131934A (ru) 2011-02-27

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