WO2009091272A1 - Procédé permettant de produire un panneau pressée multicouche - Google Patents

Procédé permettant de produire un panneau pressée multicouche Download PDF

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Publication number
WO2009091272A1
WO2009091272A1 PCT/PT2009/000004 PT2009000004W WO2009091272A1 WO 2009091272 A1 WO2009091272 A1 WO 2009091272A1 PT 2009000004 W PT2009000004 W PT 2009000004W WO 2009091272 A1 WO2009091272 A1 WO 2009091272A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
pressed
cork
wood
layers
Prior art date
Application number
PCT/PT2009/000004
Other languages
English (en)
Inventor
José António Marchão Das Chagas
Original Assignee
Amorim Revestimentos, S.A.
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 Amorim Revestimentos, S.A. filed Critical Amorim Revestimentos, S.A.
Priority to ES09703021.7T priority Critical patent/ES2557592T3/es
Priority to EP09703021.7A priority patent/EP2237936B1/fr
Publication of WO2009091272A1 publication Critical patent/WO2009091272A1/fr

Links

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

Definitions

  • the invention concerns a process for the production of a multi-layer pressed board which in the finished condition is made up at least from two layers of different pressed materials.
  • the invention also concerns a manufacturing installation for the production of a multi-iayer pressed board.
  • the invention further concerns such a manufactured pressed board.
  • Pressed boards are generally known, they are usually employed in interior building works for floors, walls or ceilings.
  • Such boards comprise for example at least one HDF layer (high density fibreboard) and a layer consisting of a cork material.
  • a pressed board is made up from three layers, wherein either an HDF layer is arranged between two cork layers or a cork layer is arranged between two HDF layers.
  • the HDF layer substantially achieves the hardness and stability for the pressed board whereas a cork layer has a certain elasticity and good insulating properties.
  • a cork layer is used as the central layer in particular when surfaces which are as hard as possible are wanted, whereas the central layer is an HDF layer when a somewhat more yielding surface which has a warmer effect is desired.
  • the three respective layers are produced separately and pressed individually.
  • the three resulting pressed layers are then ground at their surface in order to produce a respective smooth flat surface.
  • the three boards are then placed one upon the other, with the contact surfaces provided having been previously coated with an adhesive after they had been cleaned. Those three layers with adhesive therebetween are then pressed so that the three layers firmly adhere to each other and thereby form a stable pressed board.
  • the object of the invention is to improve a known process for the production of a multi-layer pressed board and in particular to reduce the above-indicated disadvantages.
  • a process as set forth in claim 1 Accordingly in a first step a first material is applied as uniformly as possible to a support base in order thus to form the first layer. In that case that first layer is initially left unpressed. A second material is next applied as uniformly as possible to that first unpressed layer in order thus to form a second layer on the first layer. That second layer is also initially left unpressed.
  • Those two layers which are disposed one upon the other and which are still unpressed are then usually pressed together with the action of heat thereon, possibly with one or more further layers, to afford the pressed board to be manufactured. That can be effected by a flat press so that at least those two specified layers are arranged flat between two pressing bodies of the flat press and then pressed. In the pressing operation on the one hand the two pressed layers are produced while on the other hand a firm join is also made between those two layers in the pressing operation. In that respect a firm join between the two layers is important, in which respect there is no need for those two layers to be of a smooth and flat nature in their contact region. Rather the two layers can adapt to each other in the contact region and after the pressing operation a rather uneven contact region and thus joining region between those two layers is to be expected.
  • a cork material is used as the material for the first or second layer.
  • the second or first layer respectively then correspondingly comprises a wood material.
  • Both the cork material and also the wood material respectively correspond to a basically known material from which hitherto a respective individual pressed cork or pressed wood board was manufactured.
  • Both the cork material and also the wood material have inter alia a bonding agent in order to guarantee the cohesion of the individual particles after the pressing operation. That bonding agent then serves also for joining the layers together in the joint pressing operation according to the invention for the two un- pressed layers.
  • a third layer consisting of the first material is applied to the second layer. That therefore results in three layers which are applied one upon the other in an unpressed condition, of which the central one comprises the second material and the other two layers comprise the first material.
  • the central one comprises the second material
  • the other two layers comprise the first material.
  • Those three unpressed layers are then jointly pressed preferably in a flat press and that correspondingly results in a triple-layer pressed board.
  • a triple-layer pressed board is also to be preferred in particular for the reason that such a pressed board comprising an odd number of layers has proven to be stable in respect of shape and in particular does not have any tendency to warp.
  • the cork material is a mixture of cork grains and glue as the bonding agent.
  • the cork grains involve a proportion of 75 - 95, in particular 82 - 92 percent by weight.
  • the cork grains which can also be referred to as cork scrap provide that the layer to be produced has the properties which are generally known of cork and which are desired. In particular insulating and elasticity properties are desired in that respect. If that layer is visible, the appearance of the cork is additionally to be borne in mind.
  • the bonding agent provides that the cork constituents are fixedly joined so that the result is a layer which is as firm and strong as possible. In addition the bonding agent causes or at least promotes adhesion of the layers to each other.
  • the wood material used is preferably a mixture of 70 - 85, in particular 75 - 80 percent by weight of wood constituents, in particular wood fibres, and in addition glue as the bonding agent for the wood constituents.
  • the wood constituents, in particular wood fibres achieve stability for the layer in question, in particular in regard to breaking strength, that is to say in regard to tensile and thus flexural loadings.
  • the glue provides for a strong firm join and thus makes it possible to produce a substantially firm layer.
  • the wood material to be preferred corresponds to a material which is used in a manner that is already known for the production of HDF boards or individual HDF layers. Such a material for the production of an HDF layer has in particular a good price-yield ratio for the layer in question. Equally however it is possible to consider other compositions, such as for example the use of a material which is employed for the production of chipboard. In other words the wood constituents or wood fibres can be of differing degrees of fineness.
  • the layers are respectively applied with an applicator apparatus and the support base is moved in a conveyor direction during application of the layers relative to the applicator apparatuses in order to provide for uniform application of the layers.
  • the applicator apparatuses can be stationary and the support base is moved under the applicator apparatuses in the conveyor direction. With continuous delivery of the respective material by the respective applicator apparatus and simultaneous continuous uniform movement of the support base in the conveyor direction, it is thus possible to achieve uniform application.
  • an absolute movement of the applicator apparatuses can also be effected.
  • the movement of the support base is desirable however as that means that the finally completely applied layers- can be further conveyed to the pressing operation.
  • the process is such that a plurality of applicator apparatuses and in particular three applicator apparatuses are arranged in succession in the conveyor direction for the production of a triple-layer pressed board and each applicator apparatus has a substantially elongate delivery region for delivery of the respective material and each delivery region is oriented substantially transversely with respect to the conveyor direction.
  • the material in question is delivered by a first delivery device substantially in the form of a wide strip on the support base and that strip forms the first layer and is further conveyed in the direction of the next applicator apparatus.
  • the next applicator apparatus substantially also dispenses the material in question in the form of a strip, for the second layer, the material in strip form being disposed on the first and thus lowermost layer. In that way a layer or further layers can also be added.
  • an applicator apparatus has a slit nozzle, the longitudinal direction of which is arranged substantially transversely with respect to the conveyor direction.
  • a slit nozzle it is also possible to use a plurality of individual applicator nozzles which apply the material in the form of a plurality of beads which then join together to form a layer on the support base.
  • one or more scrapers or smoothing devices which spread the respective layers of the first or second material to make them smooth before a further layer is applied.
  • the unpressed layers which are arranged one upon the other in the finished condition are then further conveyed to a pressing apparatus, in particular a flat press,
  • the pressing operation is then effected there, preferably being effected with the application of heat. That provides for advantageous and also accelerated hardening of the materials used. Particularly when using materials with bonding agent that bonding agent is advantageously hardened as quickly as possible.
  • An embodiment involves a continuous pressing operation in which the unpressed layers are continuously guided to a pressing apparatus and there continuously pressed.
  • continuous pressing operation is effected by means of a calender press.
  • a calender press has at least two pressing rollers, between which the layers are passed for the pressing procedure.
  • a continuous process, in particular a pressing operation means that the movement of the layers and the pressing operation take place simultaneously and substantially together and conveying and pressing do not alternate. Occasionally stopping the procedure for example in order to cut off the pressed layers or to cut them to size does not exclude the property of continuous pressing.
  • a multi-layer pressed board having at least one pressed cork layer and a pressed wood layer as set forth in claim 17.
  • a pressed board according to the invention is produced by at least one un- pressed layer of a cork material as the starting material for the pressed cork layer and an unpressed layer of a wood material as the starting material for the pressed wood layer being pressed together to afford the pressed board.
  • Such a multi-layer pressed board is frequently to be recognised by virtue of the fact that a somewhat uneven and/or irregular contact zone, in particular contact surface, is present between the pressed cork layer and the pressed wood layer. At any event there is frequently no flat contact surface which has been ground smooth, between those two layers. That uneven contact region can mostly already be recognised in a cross-section through the pressed board.
  • the pressed board has been produced by a process according to the invention.
  • a central pressed cork layer is arranged between two pressed wood layers and in accordance with another configuration a central pressed wood layer is provided between two pressed cork layers.
  • the man skilled in the art will usually select the respective configuration in accordance with the intended purpose of use.
  • the individual layers can be of different thicknesses.
  • the two wood layers can be of mutually different thicknesses.
  • the terms cork layer and wood layer do not mean a pure cork layer and a pure wood layer respectively, but a layer which has wood or cork respectively, in particular in the combination as described hereinbefore in relation to some embodiments, consisting of wood and cork constituents respectively and bonding agent.
  • Figure 1 diagrammatically shows a manufacturing installation according to the invention
  • Figure 2 diagrammatically shows a triple-layer pressed board according to the invention with a central cork layer
  • Figure 3 diagrammatically shows a triple-layer pressed board with a central wood layer.
  • Figure 1 diagrammatically shows a manufacturing installation 2 comprising a first, a second and a third applicator apparatus 4, 6 and 8, a conveyor apparatus 10 and a flat press 12. It is to be noted in particular that the illustrated size relationships which have been adopted for illustrative purposes do not have to correspond to the actual size relationships of an embodiment. As shown in Figure 1 therefore a production process takes place in such a way that a support base 14 is gradually moved in the conveyor direction 16 under the applicator apparatuses 4, 6 and 8 by means of the conveyor apparatus 10. In that case a cork material 24 is continuously applied to the support base 14 by the first applicator apparatus 4 and thus forms the first layer 34.
  • the first layer 34 which has begun is further moved to the second applicator apparatus 6 which delivers a wood material 26 as a second material in order to begin the second layer 36 on the first layer 34.
  • the first layer 34 and the second layer 36 are further conveyed to the third applicator apparatus 8 which delivers a cork material 28 as the third material, which is deposited as the third layer 38 on the second layer 36.
  • the first applicator apparatus 4 stops the delivery of the cork material 24. In that case the support base 14 is further conveyed until the wood material 26 has completely covered the cork material 24.
  • the second applicator apparatus 6 stops delivery of the wood material 26 and a short time later in the same fashions the third applicator apparatus 8 stops delivery of the cork material 28 as the third material.
  • the pressing pressure is maintained for a while and in that situation heating is also effected by way of the co-operating backing body and the pressing ram.
  • the pressing ram 20 can then be lifted again and the pressed layers 34', 36' and 38' which are now firmly pressed together can be removed.
  • the process then comprises cutting the pressed board to size and possibly grinding the edges and/or surfaces.
  • Figure 2 shows a triple-layer pressed board in which a central cork layer 46 is arranged between two wood layers 44 and 48 as the first and third layers.
  • the surface 50 of the pressed board 42 has been ground substantially flat and smooth.
  • the contact regions 45 and 47 respectively between the first and second layers 44 and 46 respectively and the second and third layers 46 and 48 respectively is in contrast of a less flat nature, due to the production process.
  • the surfaces in question were not ground smooth in the contact regions 45 and 47.
  • the pressed board 62 in Figure 3 comprises a wood layer 66 as the central layer and thus the second layer between two cork layers 64 and 68.
  • the contact regions 65 and 67 between the first and second layers 64, 66 and between the second and third layers 66, 68 respectively are not entirely flat, due to the production process according to the invention.
  • Figures 2 and 3 also show an only diagrammatic illustration of the pressed board 42 or 62 respectively.
  • the views are not intended to give any indication of actual size relationships, either in respect of the cork board itself nor in respect of the layers relative to each other nor the diagrammatically illustrated particles of the cork layers 46, 64 and 68.
  • the terms cork layer and wood layer used also do not necessarily describe a layer which consists exclusively of wood or cork, as has already been explained hereinbefore.

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)

Abstract

Cette invention concerne un procédé permettant de produire un panneau pressé multicouche (50; 70), lequel procédé comprend les étapes qui consistent: à appliquer une première couche (34,44,64) d'un premier matériau (24) sur un support de base (14); à appliquer une seconde couche (36,46,66) d'un second matériau (26) sur la première couche qui n'est pas encore pressée; puis à presser au moins la première et la seconde couche (34,36;44,46;64,66) afin d'obtenir un panneau pressé. Un matériau parmi le premier et le second matériaux (24, 26) consiste en du liège (24) pour la production de panneau en liège pressé et l'autre matériau parmi le premier et le second matériaux (24, 26) consiste en du bois (26) pour la production d'un panneau en bois pressé. L'invention concerne également l'installation de fabrication permettant la production d'un panneau pressé multicouche, laquelle installation fonctionne selon un procédé décrit dans l'invention. Enfin, cette invention concerne un panneau pressé produit selon le procédé susmentionné.
PCT/PT2009/000004 2008-01-14 2009-01-14 Procédé permettant de produire un panneau pressée multicouche WO2009091272A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES09703021.7T ES2557592T3 (es) 2008-01-14 2009-01-14 Proceso para la producción de un tablero prensado multicapa y tablero producido de esta manera
EP09703021.7A EP2237936B1 (fr) 2008-01-14 2009-01-14 Procédé permettant de produire un panneau pressée multicouche et panneau pressée multicouche

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810004154 DE102008004154A1 (de) 2008-01-14 2008-01-14 Verfahren zum Herstellen einer mehrschichtigen Pressplatte
DE102008004154.8 2008-01-14

Publications (1)

Publication Number Publication Date
WO2009091272A1 true WO2009091272A1 (fr) 2009-07-23

Family

ID=40498642

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/PT2009/000004 WO2009091272A1 (fr) 2008-01-14 2009-01-14 Procédé permettant de produire un panneau pressée multicouche

Country Status (5)

Country Link
EP (1) EP2237936B1 (fr)
DE (1) DE102008004154A1 (fr)
ES (1) ES2557592T3 (fr)
PT (1) PT2237936E (fr)
WO (1) WO2009091272A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2471096A (en) * 2009-06-16 2010-12-22 Eco Mats Ltd Laminated composites based on natural materials

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1018721A3 (nl) * 2009-04-16 2011-07-05 Unilin Bvba Plaatmateriaal en paneel dat dergelijk plaatmateriaal bevat.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2281214A1 (fr) * 1974-08-05 1976-03-05 Azote & Prod Chim Procede de fabrication en continu de panneaux de particules
JPS63197641A (ja) * 1987-02-12 1988-08-16 内山工業株式会社 木質複合板とその製造方法
JPH01299956A (ja) * 1988-05-25 1989-12-04 Ooshika Shinko Kk 防音床材
DE19921019A1 (de) * 1999-05-06 2000-11-23 Schlingmann Gmbh & Co Korkverbundplatte und Verfahren zur Herstellung einer solchen Verbundplatte
DE10024543A1 (de) * 2000-05-18 2001-11-22 Dieffenbacher Gmbh Maschf Verfahren und Anlage zur kontinuierlichen Herstellung einer Mehrschichtplatte
DE102007025331A1 (de) * 2007-05-31 2008-12-04 Steico Ag Mehrschichtige Werkstoffplatte, insbesondere aus Hanf

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0611339B1 (fr) * 1992-05-26 1999-01-27 Günter TESCH Corps moule en materiau thermoplastique et en pellicules en cellulose agglomerees
DE10122963A1 (de) * 2001-05-11 2002-11-14 C M C Srl Streugutanlage zum Streuen von Streugut, insbes. Holzspänen oder Holzfasern im Zuge der Herstellung von Spanplatten, Faserplatten o. dgl. Holzwerkstoffplatten
DE102005034856A1 (de) * 2004-08-14 2006-02-23 Institut für Holztechnologie Dresden gGmbH Dekorative Holzwerkstoffplatte und Verfahren zu ihrer Herstellung
DE102005057606A1 (de) * 2005-12-02 2007-06-06 Günther Isensee Modellbaubedarf Verfahren zur Herstellung einer Balsaholzspanplatte

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2281214A1 (fr) * 1974-08-05 1976-03-05 Azote & Prod Chim Procede de fabrication en continu de panneaux de particules
JPS63197641A (ja) * 1987-02-12 1988-08-16 内山工業株式会社 木質複合板とその製造方法
JPH01299956A (ja) * 1988-05-25 1989-12-04 Ooshika Shinko Kk 防音床材
DE19921019A1 (de) * 1999-05-06 2000-11-23 Schlingmann Gmbh & Co Korkverbundplatte und Verfahren zur Herstellung einer solchen Verbundplatte
DE10024543A1 (de) * 2000-05-18 2001-11-22 Dieffenbacher Gmbh Maschf Verfahren und Anlage zur kontinuierlichen Herstellung einer Mehrschichtplatte
DE102007025331A1 (de) * 2007-05-31 2008-12-04 Steico Ag Mehrschichtige Werkstoffplatte, insbesondere aus Hanf

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2471096A (en) * 2009-06-16 2010-12-22 Eco Mats Ltd Laminated composites based on natural materials

Also Published As

Publication number Publication date
PT2237936E (pt) 2016-01-12
EP2237936B1 (fr) 2015-09-09
DE102008004154A1 (de) 2009-07-16
ES2557592T3 (es) 2016-01-27
EP2237936A1 (fr) 2010-10-13

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