EP2319671A1 - Plaque en matériau dérivé du bois - Google Patents

Plaque en matériau dérivé du bois Download PDF

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Publication number
EP2319671A1
EP2319671A1 EP09013890A EP09013890A EP2319671A1 EP 2319671 A1 EP2319671 A1 EP 2319671A1 EP 09013890 A EP09013890 A EP 09013890A EP 09013890 A EP09013890 A EP 09013890A EP 2319671 A1 EP2319671 A1 EP 2319671A1
Authority
EP
European Patent Office
Prior art keywords
wood
fibers
based panel
cover layer
layer
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
EP09013890A
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German (de)
English (en)
Other versions
EP2319671B1 (fr
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.)
Kronotec AG
Original Assignee
Kronotec AG
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 Kronotec AG filed Critical Kronotec AG
Priority to EP09013890.0A priority Critical patent/EP2319671B1/fr
Priority to ES09013890.0T priority patent/ES2469792T3/es
Priority to PL09013890T priority patent/PL2319671T3/pl
Publication of EP2319671A1 publication Critical patent/EP2319671A1/fr
Application granted granted Critical
Publication of EP2319671B1 publication Critical patent/EP2319671B1/fr
Active 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
    • 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
    • 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
    • B27N3/06—Making particle boards or fibreboards, with preformed covering layers, the particles or fibres being compressed with the layers to a board in one single pressing operation

Definitions

  • the invention relates to a wood-based panel, in particular an OSB, chip, plywood or fiber board (MDF, HDF), which has at least one upper cover layer, at least one middle layer and at least one lower cover layer.
  • OSB OSB
  • chip chip
  • MDF plywood or fiber board
  • Such a wood-based panel is for example from the EP 1 754 583 A1 known.
  • the layers are all made of resin-glued strands.
  • the resin coated strands are provided separately, the strands of the lower cover layer laid down in a first orientation substantially longitudinal to the plate main direction, the strands of the middle layer deposited in a second orientation substantially transverse to the plate main direction on the lower cover layer, and the strands of the upper cover layer are deposited in the first orientation on the middle layer and then pressed this layer structure under increased pressure and elevated temperature.
  • Wood-based panels represent very high quality products, but are subject to specific limitations, with the mechanical properties, such as. B. flexural strength, modulus and transverse tensile strength are meant. If wood-based panels are used as structural panels, another significant disadvantage is their increased flammability due to the lignocellulosic material used. Especially in the construction sector, there is an increasing demand for wood-based panels, which have high strength properties at comparatively low plate thickness, so that they are easy to handle due to their low weight.
  • the upper and / or lower cover layer may also have at least one fabric layer.
  • the fabric layer can z. B. be applied in the form of a fabric mat, whereby the bending properties of an OSB board are increased.
  • a fiber reinforced board having a reinforcing layer of glass fiber material or the like disposed on a core layer of wood or wood material is known.
  • This reinforcing layer is located on both sides in a bonding layer of plastic shrinking during curing, such as polyester resin.
  • the outer bonding layer applied to the reinforcing layer is covered by a protective layer of plastic film.
  • the protective film should prevent the fiber material from coming out when it is weathered.
  • a reinforced molding of a compressed mixture of comminuted, finely divided lignocellulosic particles and binder is known in which a plurality of continuous, endless, long reinforcing threads is embedded.
  • the reinforcing threads have a tensile strength and elasticity that is substantially greater than the tensile strength and elasticity of the bonded mixture.
  • the reinforcing threads are arranged largely straight in a predetermined direction and parallel to each other in the lateral distance.
  • the reinforcing filaments have a length to extend continuously in the predetermined direction from one side to the opposite side of the molded article, and they are bonded to the lignocellulosic particles over substantially the entire length thereof via the binder.
  • the material for the reinforcing threads are glass fibers or steel wires into consideration, since they adhere well to the binders and are inexpensive to procure.
  • the invention has the object to improve the wood-based panel initially explained to the effect that not only their mechanical properties increase significantly, but also their properties are improved in case of fire.
  • a generic wood-based panel characterized by the fact that only in the upper and / or the lower cover layer glass fibers or rock wool fibers are included.
  • the weight of the wood-based panel is kept low. At the same time, however, a stiffening and in particular an increase in the tensile strength is provided in the area in which the highest load occurs when the wood-based panel is used as a building board.
  • non-flammable fibers By incorporating non-flammable fibers into the panel structure, the flammability of the wood-based panel is significantly reduced or its fire resistance significantly increased.
  • the upper and / or lower cover layer exclusively on glass fibers or rock wool fibers.
  • the stability of the plate is thereby further improved and their flammability further reduced.
  • the upper and / or lower cover layer may consist of a fleece of glass fiber or rockwool fiber, which has either been glued or pressed in the production of the wood-based panel with the other layers.
  • the upper and / or lower cover layer could also consist of a lignocellulose-containing material into which glass fibers or rockwool fibers are additionally introduced.
  • Phenol-formaldehyde resoles or phenol-formaldehyde novolaks are preferably used to compound the glass fibers or rock wool fibers with the lignocellulose-containing material.
  • fire and / or flame retardants VOC and formaldehyde scavengers, fungicides and / or termite attack agents can be added to further improve the properties of the board.
  • These additives may be added cumulatively or alternatively.
  • the fiberboard 1 can, as in FIG. 3 is shown, from three layers 2, 3, 4 of lignocellulosic material, such as wood chips or wood fibers, be scattered.
  • the upper cover layer 5 and the lower cover layer 6 are made of glass fibers or rock wool fibers. This could be provided as a nonwoven, and glued to the upper layer 4 and the lower layer 2. It is also possible, as described in more detail below, to sprinkle the glass fibers or rock wool fibers and then to press them with the scattered layers 2, 3, 4.
  • the wood-based panel 1a consists of the middle layer 3a and the upper cover layer 5a and the lower cover layer 6a.
  • the middle layer 3a consists of cellulose-containing material, for example wood chips or wood fibers.
  • the cover layers 5a, 6a also consist of lignocellulose-containing material.
  • glass fibers or rock wool fibers integrated into the cover layers 5a, 6a and glued or pressed with the wood chips or wood fibers.
  • the glass fibers or rockwool fibers need not be contained in or form two cover layers 5a, 6a, but may optionally also be contained in one of the cover layers 5a or 6a.
  • wood-based panel 1 may be a conventional OSB, chipboard, plywood or fiberboard on which in a second manufacturing step, either the glass fiber or rock wool fiber layer applied or a fiberglass or rock wool fiber fleece is applied.
  • conventional adhesives can be used, which are also used for the production of the wood-based panel itself.
  • the preparation is advantageously carried out in a batch press. For example, a short-cycle press can be used for this purpose.
  • FIG. 7 A third way of manufacturing is schematically in FIG. 7 shown.
  • fiberglass or rockwool nonwovens 5b, 6b are unrolled during the scattering process of the wood-based panel.
  • a fiberglass or rock wool fiber fleece 6b is first applied by rolling from a dispenser 10.
  • individual wood chips, wood fiber or beach layers 2b, 3b, 4b are scattered by means of the scattering device 8, wherein the orientation of the chips or strands in adjacent layers can each be offset by 90 °.
  • an upper glass fiber or rock wool fiber fleece 5b is placed by the dispenser 9.
  • the cake thus constructed is then pressed in a press 11 at elevated temperature to the wood-based material board desired thickness.
  • the webs 5b, 6b may have been soaked or glued prior to pressing with commercially available liquid adhesives. But it can also be incorporated powdered adhesives. Again, such powdery adhesives are preferably used as they are used for the production of glass fiber, such as phenol-formaldehyde resoles or phenol-formaldehyde novolacs. The lamination can be done either on one or both sides. As conventional adhesives for the production of MUPF and / or PMDI adhesives are used. To improve the properties of the wood-based panel further additives may be used such. As fire retardants or flame retardants. VOC and formaldehyde scavengers, fungicides and anti-termite agents may also be used. These may be commercial preparations.
  • Another type of production of a wood-based panel according to the invention can take place in which in a first step an OSB board is produced. Subsequently, rock wool fibers are blended with a phenol-formaldehyde novolak, the addition amount is about 10% based on the rock wool fibers. Then a fleece is formed mechanically. In a further step, this nonwoven is pressed onto the OSB board in a discontinuous press (for example a short-cycle press). In the process, the novolak on the nonwoven fabric combines with the wood surface, resulting in a largely homogeneous fiber composite material. The rockwool fiber is chemically bound to the novolak. In contrast to a purely glued system, which would be characterized by a discrete boundary layer between the OSB and the rock wool fleece.

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)
  • Laminated Bodies (AREA)
EP09013890.0A 2009-11-05 2009-11-05 Procédé de fabrication d'un panneau OSB Active EP2319671B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP09013890.0A EP2319671B1 (fr) 2009-11-05 2009-11-05 Procédé de fabrication d'un panneau OSB
ES09013890.0T ES2469792T3 (es) 2009-11-05 2009-11-05 Procedimiento para fabricar una placa OSB
PL09013890T PL2319671T3 (pl) 2009-11-05 2009-11-05 Sposób wytwarzania płyt OSB

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09013890.0A EP2319671B1 (fr) 2009-11-05 2009-11-05 Procédé de fabrication d'un panneau OSB

Publications (2)

Publication Number Publication Date
EP2319671A1 true EP2319671A1 (fr) 2011-05-11
EP2319671B1 EP2319671B1 (fr) 2014-03-26

Family

ID=41667208

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09013890.0A Active EP2319671B1 (fr) 2009-11-05 2009-11-05 Procédé de fabrication d'un panneau OSB

Country Status (3)

Country Link
EP (1) EP2319671B1 (fr)
ES (1) ES2469792T3 (fr)
PL (1) PL2319671T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014131801A1 (fr) * 2013-02-27 2014-09-04 Georg-August-Universität Göttingen Stiftung Öffentlichen Rechts Plaque en bois et en matériau composite et son procédé de fabrication

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB485588A (en) 1936-11-20 1938-05-20 Felix Pfohl Improvements in and relating to the manufacture of sheets for cabinet and joiner's work
DE1945779A1 (de) 1968-09-10 1970-04-02 Ibus Werke Gmbh Faserverstaerkte Platte sowie Verfahren und Vorrichtung zu deren endlosen Herstellung
DE2554212A1 (de) 1974-12-02 1976-08-12 Robert Dudley Flanders Verstaerkte formteile aus lignocellulose und verfahren zu ihrer herstellung
DE4110640A1 (de) 1990-04-05 1991-10-10 Richard Pott Formkoerper
JP2001152661A (ja) 1999-11-29 2001-06-05 Shimizu Corp 木チップによる再生型枠
EP1754583A1 (fr) 2005-08-17 2007-02-21 Kronotec Ag Plaque en materiau de bois et procédé de fabrication

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080148677A1 (en) * 2006-12-20 2008-06-26 Huber Engineered Woods Llc Reinforced Wood Panel

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB485588A (en) 1936-11-20 1938-05-20 Felix Pfohl Improvements in and relating to the manufacture of sheets for cabinet and joiner's work
DE1945779A1 (de) 1968-09-10 1970-04-02 Ibus Werke Gmbh Faserverstaerkte Platte sowie Verfahren und Vorrichtung zu deren endlosen Herstellung
DE2554212A1 (de) 1974-12-02 1976-08-12 Robert Dudley Flanders Verstaerkte formteile aus lignocellulose und verfahren zu ihrer herstellung
US4058580A (en) 1974-12-02 1977-11-15 Flanders Robert D Process for making a reinforced board from lignocellulosic particles
DE4110640A1 (de) 1990-04-05 1991-10-10 Richard Pott Formkoerper
JP2001152661A (ja) 1999-11-29 2001-06-05 Shimizu Corp 木チップによる再生型枠
EP1754583A1 (fr) 2005-08-17 2007-02-21 Kronotec Ag Plaque en materiau de bois et procédé de fabrication

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014131801A1 (fr) * 2013-02-27 2014-09-04 Georg-August-Universität Göttingen Stiftung Öffentlichen Rechts Plaque en bois et en matériau composite et son procédé de fabrication
EP3366442A1 (fr) * 2013-02-27 2018-08-29 Georg-August-Universität Göttingen Plaque de bois et de matériau composite ainsi que procédé de fabrication

Also Published As

Publication number Publication date
EP2319671B1 (fr) 2014-03-26
ES2469792T3 (es) 2014-06-20
PL2319671T3 (pl) 2014-08-29

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