EP2241426B1 - Procede de fabrication d'un panneau de fibres ä bois - Google Patents

Procede de fabrication d'un panneau de fibres ä bois Download PDF

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Publication number
EP2241426B1
EP2241426B1 EP09005468.5A EP09005468A EP2241426B1 EP 2241426 B1 EP2241426 B1 EP 2241426B1 EP 09005468 A EP09005468 A EP 09005468A EP 2241426 B1 EP2241426 B1 EP 2241426B1
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EP
European Patent Office
Prior art keywords
cake
wood
impregnating liquid
vacuum
impregnating
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.)
Active
Application number
EP09005468.5A
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German (de)
English (en)
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EP2241426A1 (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.)
Flooring Technologies Ltd
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Flooring Technologies Ltd
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 Flooring Technologies Ltd filed Critical Flooring Technologies Ltd
Priority to ES16151741T priority Critical patent/ES2738596T3/es
Priority to EP09005468.5A priority patent/EP2241426B1/fr
Priority to EP16151741.2A priority patent/EP3028829B1/fr
Priority to ES09005468.5T priority patent/ES2585367T3/es
Priority to PL16151741T priority patent/PL3028829T3/pl
Priority to PL09005468.5T priority patent/PL2241426T3/pl
Publication of EP2241426A1 publication Critical patent/EP2241426A1/fr
Application granted granted Critical
Publication of EP2241426B1 publication Critical patent/EP2241426B1/fr
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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
    • B27N3/08—Moulding or pressing
    • B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
    • 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
    • B27N1/00—Pretreatment of moulding material
    • 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
    • B27N3/24—Moulding or pressing characterised by using continuously acting presses having endless belts or chains moved within the compression zone
    • 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
    • B27N9/00—Arrangements for fireproofing

Definitions

  • the invention relates to a method for producing a wood-based panel, in particular a wood fiber board, are sprinkled with an adhesive wetted wood fibers or wood chips on an endlessly circulating conveyor belt to a cake, the cake of wood fibers or wood chips in a transport direction T promoted to various processing stations, compressed in a pre-press and then pressed under pressure and temperature influence in a hot press to a plate of desired thickness.
  • Such a method is for example from the DE 10 2005 033 687 A1 known.
  • first long fibers must be produced in a defibering cut, which can be done in an upstream process or immediately before the plant for producing the wood fiber boards.
  • the coarse, long wood fibers are then applied with additives, such as flame retardants and water repellents.
  • binder urea-formaldehyde glue
  • the fibers are then dried with appropriate additives and the fiber sizing via a power tube dryer.
  • the fiber mixture is sprinkled on a spreading device to an endless cake on the endless circulating conveyor belt.
  • the loosely sprinkled mixed fiber cake is then fed from the conveyor belt to a cold pre-press and cold pre-compaction of the fiber web is achieved. Subsequently, the nonwoven fabric is returned to the conveyor belt of a continuous hot press in which it is hot pressed to a plate of desired thickness.
  • the press belts are advantageously coated with a release agent to prevent adhesion of the prevent plates formed.
  • the endlessly produced plates are then formatted and separated into individual plates and then assembled.
  • MDF Medium Density Fiberboard
  • HDF High Density Fiberboard
  • properties may be, for example, the conductivity that is involved or desired for a fiberboard either in powder coating the panel itself or when the panel is to be used as a laminate flooring panel support and the flooring must have antistatic properties.
  • the conductivity can be achieved by adding salts in the manufacturing process, for example in the refining process.
  • Another desired property may be a fire retardant design.
  • the EP 1 710 061 A1 discloses a method for continuously preheating a mat or mat. This steam is introduced into a mat of scattered wood chips or chips. This distributes itself within the mat and heats it up.
  • the DE 2 050 530 discloses a method for impregnating preformed sounding material with a binder.
  • the Beschalungsmaterial consists of porous plates, on one surface of the binder is applied. The opposite surface is then subjected to a negative pressure, whereby the binder is pulled into the openings of the porous plate.
  • the DE 103 14 974 A1 describes a process for the production of moldings, in which first a dimensionally stable preform of the molded article is prepared by gluing lignocellulose-containing fibers with a binder and formed into a fiber mat and in the cavities of the preform an impregnating liquid is introduced, with the at least 50% of the fibers the preform can be achieved.
  • a pressure gradient can be provided between the main sides of the preform with which the impregnating liquid is drawn from the one main side of the preform to the other main side of the preform.
  • the impregnating liquid can be a low-viscosity resin which is completely cured directly after introduction into the cavities of the mold. Also, only a partial cure can be made to fix the resin exclusively in the preform. The final curing of the resin can then take place when the preform is subjected to a downstream forming process to give it the shape of the desired shaped body.
  • the method described above is to be improved so that a quick and safe impregnation of the wood-based panel with various impregnating liquids is possible.
  • the problem is solved by a method according to claim 1.
  • the cake of wood chips or wood fibers on the conveyor behind the pre-press and before the hot press is subjected to a vacuum, and at the same time an impregnating medium is applied to the cake, which is due to the vacuum in Cake is distributed and that the impregnating liquid is crosslinked during hot pressing, the impregnation takes place at a time within the manufacturing process, to which a high porosity of the surface is present, which means that the sprayed by means of nozzles on the fiber cake impregnating liquid simply sucked into the cake and can spread evenly there.
  • Partial application of the impregnation results in areas with / without impregnation (tempering), whereby the tempered areas have different properties compared to non-tempered areas.
  • the impregnating liquid can influence, for example, the water absorption capacity or the strength values of the finished-pressed wood-based panel.
  • the vacuum is applied below the fiber cake and applied the impregnating liquid from above onto the fiber cake.
  • the device for applying the impregnating liquid can be arranged stationary, which simplifies the construction of the production line and reduces its cost.
  • the application unit is preferably arranged stationary.
  • the number of nozzles is determined by the nature of the desired impregnation.
  • the nozzles may be arranged parallel to one another over the full width of the chip or fiber cake or only partially, for example at the edge.
  • the wood fibers or wood chips wetted with a glue are sprinkled onto the conveyor belt 2, which is endlessly driven in the transport direction T, to form a cake 6.
  • a glue preferably a urea-formaldehyde glue
  • the cake 6 is compressed, so cold pre-compressed.
  • an impregnation station 4 is integrated, consisting of a below the conveyor belt 2 arranged vacuum station 12 and one above the conveyor belt 2 arranged application unit, such as nozzles 7, 8, consists.
  • the vacuum station 12 and the application units 7, 8 are stationary and immovable.
  • the conveyor belt 2 is perforated, so that vacuum channels form, by means of which the impregnating medium sprayed onto the upper side of the compressed cake 6 can be sucked by the vacuum station 12.
  • Side of the coating units plates 9, 10 are provided, which limit the cake 6 side and ensure that no air from the side can be sucked into the cake 6.
  • the metal sheets 9, 10 preferably extend over the entire length of the impregnating station 4.
  • the metal sheets 9, 10 are part of a closed frame 11 which encloses the impregnating station 4 to the outside and the vacuum station 12 receives as well as the application unit.
  • two nozzles 7, 8 are exemplified for the application unit.
  • the conveyor belt 2 runs over an air-permeable frame part 13.
  • impregnation medium fire retardant particles as well as insect repellent protective particles can be used. Also, colors can be used as the impregnation medium to colorize the cake 6 targeted.
  • a heated impregnating medium By applying a heated impregnating medium, the cake 6 can be heated and thus the production speed can be increased. For heating the cake 6 also heated air can be entered.

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)

Claims (4)

  1. Procédé pour fabriquer une plaque en matériau à base de bois, en particulier une plaque en fibres de bois, dans lequel des fibres de bois ou des copeaux de bois mouillés d'une colle sont épandus sur une bande de transport circulant sans fin pour former un matelas (6) qui est transporté dans une direction de transport T vers diverses stations de traitement, est comprimé dans une presse de préformage (3) puis compressé sous influence de température et de pression dans une presse à chaud (5) pour former une plaque d'épaisseur désirée, procédé dans lequel le matelas (6) composé de copeaux de bois ou de fibres de bois sur la bande de transport (2) est soumis à une dépression derrière la presse de préformage (3) et devant la presse à chaud (5), et en même temps un liquide d'imprégnation est pulvérisé à l'aide de buses (7, 8) sur le matelas (6) de fibres ou de copeaux pour une imprégnation sur une partie de la surface, le liquide d'imprégnation se répartissant dans le matelas (6) en conséquence de la dépression et le liquide d'imprégnation est réticulé lors du pressage à chaud.
  2. Procédé selon la revendication 1, caractérisé en ce que la dépression est établie au-dessous du matelas (6) de copeaux ou de fibres et le liquide d'imprégnation est appliqué d'en haut sur le matelas (6) de fibres ou de copeaux.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le liquide d'imprégnation influe sur la capacité d'absorption d'eau des plaques en matériau à base de bois compressées finies.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que le liquide d'imprégnation influe sur les valeurs de résistance mécanique des plaques en matériau à base de bois compressées.
EP09005468.5A 2009-04-17 2009-04-17 Procede de fabrication d'un panneau de fibres ä bois Active EP2241426B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
ES16151741T ES2738596T3 (es) 2009-04-17 2009-04-17 Instalación para la fabricación de un tablero a base de madera
EP09005468.5A EP2241426B1 (fr) 2009-04-17 2009-04-17 Procede de fabrication d'un panneau de fibres ä bois
EP16151741.2A EP3028829B1 (fr) 2009-04-17 2009-04-17 Installation pour la fabrication d'un panneau en bois agglomeré
ES09005468.5T ES2585367T3 (es) 2009-04-17 2009-04-17 Procedimiento para fabricar una placa de compuesto de madera
PL16151741T PL3028829T3 (pl) 2009-04-17 2009-04-17 Instalacja do produkcji płyty drewnopochodnej
PL09005468.5T PL2241426T3 (pl) 2009-04-17 2009-04-17 Sposób wytwarzania płyty z tworzywa drzewnego

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09005468.5A EP2241426B1 (fr) 2009-04-17 2009-04-17 Procede de fabrication d'un panneau de fibres ä bois

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP16151741.2A Division EP3028829B1 (fr) 2009-04-17 2009-04-17 Installation pour la fabrication d'un panneau en bois agglomeré
EP16151741.2A Division-Into EP3028829B1 (fr) 2009-04-17 2009-04-17 Installation pour la fabrication d'un panneau en bois agglomeré

Publications (2)

Publication Number Publication Date
EP2241426A1 EP2241426A1 (fr) 2010-10-20
EP2241426B1 true EP2241426B1 (fr) 2016-05-04

Family

ID=40627221

Family Applications (2)

Application Number Title Priority Date Filing Date
EP16151741.2A Active EP3028829B1 (fr) 2009-04-17 2009-04-17 Installation pour la fabrication d'un panneau en bois agglomeré
EP09005468.5A Active EP2241426B1 (fr) 2009-04-17 2009-04-17 Procede de fabrication d'un panneau de fibres ä bois

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP16151741.2A Active EP3028829B1 (fr) 2009-04-17 2009-04-17 Installation pour la fabrication d'un panneau en bois agglomeré

Country Status (3)

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EP (2) EP3028829B1 (fr)
ES (2) ES2738596T3 (fr)
PL (2) PL2241426T3 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2720131T3 (es) * 2011-01-06 2019-07-18 Flooring Technologies Ltd Procedimiento y dispositivo para la influencia dirigida en las propiedades tecnológicas de zonas individuales de un tablero de material derivado de la madera, de un velo de material derivado de la madera precomprimido o de una torta de fibras de madera
DE102012100800B4 (de) 2012-01-31 2021-08-05 Flooring Technologies Ltd. Verfahren zum Imprägnieren von Werkstoffplatten, imprägnierte Werkstoffplatte und Anlage zur Herstellung einer imprägnierten Werkstoffplatte
CN109591122B (zh) * 2017-12-29 2021-09-03 南京林业大学 一种木质材料真空压缩密实化的方法
UA127261C2 (uk) 2018-05-02 2023-06-28 Ліґнум Текнолоджіз Аґ Спосіб та установка для виробництва дошки для виготовлення панелей, дошка для виготовлення панелей, спосіб та установка для виготовлення панелей і панель, вироблювана цим способом
CA3094553C (fr) 2018-05-02 2023-12-12 Xylo Technologies Ag Procede et appareil permettant de produire une planche pour la production de panneaux, planche pour la production de panneaux, procede et appareil permettant de produire des panneaux, et panneau pouvant etre produit par le procede
PL4286149T3 (pl) 2022-05-31 2024-08-26 SWISS KRONO Tec AG Sposób produkcji płyt osb i urządzenie do produkcji płyt osb

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10314974A1 (de) * 2003-04-02 2004-10-21 Glunz Ag Verfahren zur Herstellung von Formkörpern mit einer zusammenhängende lignocellulosehaltige Fasern aufweisenden formgebenden Struktur und Formkörper

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2050530A1 (en) * 1970-01-29 1971-08-05 Nat Gypsum Co Impregnating porous board with binding agent
JPH10323809A (ja) * 1997-05-27 1998-12-08 Matsushita Electric Works Ltd 耐水用中密度繊維板の製造方法
DE19963203A1 (de) 1999-12-27 2001-09-20 Kunnemeyer Hornitex Verfahren zum Herstellen von plattenförmigen Holzwerkstoffen und Platte aus Holzwerkstoff
US6620459B2 (en) * 2001-02-13 2003-09-16 Houston Advanced Research Center Resin-impregnated substrate, method of manufacture and system therefor
DE102005016408A1 (de) * 2005-04-08 2006-10-12 Dieffenbacher Gmbh + Co. Kg Verfahren zur kontinuierlichen Vorwärmung eines Vlieses oder einer Matte und Vorrichtung zur Durchführung des Verfahrens
DE102005033687A1 (de) 2005-07-19 2007-01-25 Steico Ag Holzfaserplatte und Verfahren zur Herstellung einer Holzfaserplatte
WO2007065085A2 (fr) * 2005-11-29 2007-06-07 Timtek Australia Pty, Ltd. Systeme et procede pour le traitement de conservation de produits en bois de haute technologie

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10314974A1 (de) * 2003-04-02 2004-10-21 Glunz Ag Verfahren zur Herstellung von Formkörpern mit einer zusammenhängende lignocellulosehaltige Fasern aufweisenden formgebenden Struktur und Formkörper

Also Published As

Publication number Publication date
EP3028829A1 (fr) 2016-06-08
EP3028829B1 (fr) 2019-06-05
ES2738596T3 (es) 2020-01-23
PL3028829T3 (pl) 2019-10-31
ES2585367T3 (es) 2016-10-05
PL2241426T3 (pl) 2016-12-30
EP2241426A1 (fr) 2010-10-20

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