EP1095749A1 - Procédé pour la production des panneaux d'un conglomérat du bois - Google Patents

Procédé pour la production des panneaux d'un conglomérat du bois Download PDF

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Publication number
EP1095749A1
EP1095749A1 EP00500220A EP00500220A EP1095749A1 EP 1095749 A1 EP1095749 A1 EP 1095749A1 EP 00500220 A EP00500220 A EP 00500220A EP 00500220 A EP00500220 A EP 00500220A EP 1095749 A1 EP1095749 A1 EP 1095749A1
Authority
EP
European Patent Office
Prior art keywords
particles
section
boards
elongated
wood
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
EP00500220A
Other languages
German (de)
English (en)
Other versions
EP1095749B1 (fr
Inventor
Juan Antonio Saldise Medina
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.)
Tabsal Composites de Madera SA
Original Assignee
Tabsal Composites de Madera SA
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 Tabsal Composites de Madera SA filed Critical Tabsal Composites de Madera SA
Publication of EP1095749A1 publication Critical patent/EP1095749A1/fr
Application granted granted Critical
Publication of EP1095749B1 publication Critical patent/EP1095749B1/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
    • 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
    • B27N3/10—Moulding of mats
    • B27N3/14—Distributing or orienting the particles or fibres
    • B27N3/143—Orienting the particles or fibres
    • 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
    • B27N3/04—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from fibres

Definitions

  • the present invention relates to a production process for wood conglomerate boards built from elongated wooden particles.
  • particles are dried and glued with a heat-hardened adhesive, forming a blanket in which the particles are aligned longitudinally.
  • This blanket is continuously or discontinuously introduced in a press where in high temperature conditions and with steam injection it is subjected to the appropriate pressures in order to obtain the desired final product, as regards thickness and density, so that the glue is cured and the conglomerate is formed which may later be longitudinally cut and calibrated.
  • the object of the present invention is to prevent the aforementioned problems by the use of elongated particles shaped so that they allow to minimise the gaps formed between particles when forming the blanket prior to obtaining the board.
  • a further object of the present invention is to obtain boards thicker than those obtained by traditional methods.
  • elongated particles are used which are glued to form a blanket in which the particles are distributed longitudinally or slightly deviating from said sense.
  • the blanket is subjected to pressures under high temperatures and steam in order to cure the glue.
  • the elongated particles which form the board have an approximately curved triangular cross-section.
  • Said particles are between 70 and 300 mm long, between 4 and 30 mm wide and a have thickness, defined as the smaller height of the triangle or section, between 0.5 and 4 mm.
  • the triangular cross section of the particles is preferably defined by two greater sides, one convex and one concave, forming an acute angle between them, and a third smaller concave side substantially shorter than the other two.
  • the particles therefore have an elongated or pointed cross section.
  • the board obtained by the process of the invention can reach a thickness between 25 and 150 mm., with densities between 500 ad 900 kg/m 3 .
  • Wood particles used to form the board may be obtained from either coniferous or broadleaf trees of low density. After drying, between 4% and 15% humidity, a heat hardening adhesive is applied to these particles in amounts ranging from 1.5% to 12%. Later a blanket is formed with these particles with a constant width and with the particles aligned predominantly in a longitudinal sense. Particles in the board will preferably have a deviation of under 10% in the horizontal plane and under 3% in the vertical plane.
  • Figure 1 shows a perspective view of an elongated wood particle used for the process of the invention.
  • Figure 2 shows an enlarged cross section of the particle of figure 1.
  • Figure 3 shows a perspective view of a board segment obtained in accordance with the process of the present invention, showing enlarged views of the particle distribution.
  • the board obtained by the process of the invention is formed from elongated particles (1), with a curved triangular cross-section (2), shown enlarged in figure 2.
  • This cross section (2) is elongated in shape, with two longer sides labelled (3) and (4), the former concave and the latter convex, which form an acute angle between them.
  • the third side, labelled (5), is concave and substantially shorter in length.
  • Figure 3 shows a segment (6) of a board obtained by the process of the invention.
  • particles (1) are clearly oriented in a longitudinal direction, with slight deviations which in the horizontal plane are preferably under 10%.
  • particles (1) also run longitudinally with deviations from the vertical plane of under 3%.
  • Insignis pine trunk particles 120 x 20 x 1.5 mm were obtained using a cutter block and dried to 8% humidity, then glued with 3.5% isocyanate resins. Afterwards a blanket was formed with the particles oriented and it was inserted in a press where the glue was cured by applying heat and injecting steam under pressure.
  • the product thus obtained had the following properties: density 620 kg/m 3 ; MOE 65,200 kg/cm 2 ; MOR 570 kg/cm 2 ; 24 hour swelling 5.6%; face-perpendicular tensile strength 15 kg/cm 2 .

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)
  • Adhesives Or Adhesive Processes (AREA)
  • Laminated Bodies (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
EP00500220A 1999-10-26 2000-10-26 Procédé pour la production des panneaux d'un conglomérat du bois Expired - Lifetime EP1095749B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES009902354A ES2157170B1 (es) 1999-10-26 1999-10-26 Procedimiento para la produccion de tableros aglomerados de madera.
ES9902354 1999-10-26

Publications (2)

Publication Number Publication Date
EP1095749A1 true EP1095749A1 (fr) 2001-05-02
EP1095749B1 EP1095749B1 (fr) 2005-08-17

Family

ID=8310377

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00500220A Expired - Lifetime EP1095749B1 (fr) 1999-10-26 2000-10-26 Procédé pour la production des panneaux d'un conglomérat du bois

Country Status (4)

Country Link
EP (1) EP1095749B1 (fr)
AT (1) ATE302102T1 (fr)
DE (1) DE60021980T2 (fr)
ES (1) ES2157170B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009020438A1 (fr) 2007-08-08 2009-02-12 Kronospan Sk S.R.O. Panneau de particules à une seule couche pour le batiment

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4232067A (en) * 1976-04-15 1980-11-04 Commonwealth Scientific And Industrial Research Organization Reconsolidated wood product
EP0666155A1 (fr) * 1994-01-28 1995-08-09 Forestry And Forest Products Research Institute Bois composite constitué de pièces fendues et rompues, son procédé et dispositif de fabrication
WO1997049547A1 (fr) * 1996-06-26 1997-12-31 B3 Technologies, Inc. Poutre faite de brins de bambou empiles de maniere parallele et aleatoire
DE19632997A1 (de) * 1996-08-16 1998-02-19 Siempelkamp Gmbh & Co Verwendung von Paralleloid-Holzstrands für die Herstellung von Komposit-Balken
WO1999024233A1 (fr) * 1997-11-12 1999-05-20 J. M. Huber Corporation Prechauffage a la vapeur dans la fabrication de panneaux a copeaux orientes
WO2000000331A1 (fr) * 1998-06-30 2000-01-06 Hans Dietz Copeau, procede et dispositif pour produire un tel copeau et pour profiler un tronc d'arbre, et leurs utilisations

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4058201A (en) * 1974-12-20 1977-11-15 Elmendorf Research, Inc. Method and apparatus for orienting wood strands into parallelism
US4364984A (en) * 1981-01-23 1982-12-21 Bison-Werke, Bahre & Greten Gmbh & Co., Kg Surfaced oriented strand board
FI101869B1 (fi) * 1997-02-07 1998-09-15 Sunds Defibrator Loviisa Oy Menetelmä ja laitteisto rakennetuoteaihion valmistamiseksi ja rakennetuoteaihio

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4232067A (en) * 1976-04-15 1980-11-04 Commonwealth Scientific And Industrial Research Organization Reconsolidated wood product
EP0666155A1 (fr) * 1994-01-28 1995-08-09 Forestry And Forest Products Research Institute Bois composite constitué de pièces fendues et rompues, son procédé et dispositif de fabrication
WO1997049547A1 (fr) * 1996-06-26 1997-12-31 B3 Technologies, Inc. Poutre faite de brins de bambou empiles de maniere parallele et aleatoire
DE19632997A1 (de) * 1996-08-16 1998-02-19 Siempelkamp Gmbh & Co Verwendung von Paralleloid-Holzstrands für die Herstellung von Komposit-Balken
WO1999024233A1 (fr) * 1997-11-12 1999-05-20 J. M. Huber Corporation Prechauffage a la vapeur dans la fabrication de panneaux a copeaux orientes
WO2000000331A1 (fr) * 1998-06-30 2000-01-06 Hans Dietz Copeau, procede et dispositif pour produire un tel copeau et pour profiler un tronc d'arbre, et leurs utilisations

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009020438A1 (fr) 2007-08-08 2009-02-12 Kronospan Sk S.R.O. Panneau de particules à une seule couche pour le batiment

Also Published As

Publication number Publication date
EP1095749B1 (fr) 2005-08-17
ES2157170B1 (es) 2002-02-01
DE60021980D1 (de) 2005-09-22
ES2157170A1 (es) 2001-08-01
DE60021980T2 (de) 2006-05-24
ATE302102T1 (de) 2005-09-15

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