EP3181314B1 - Procede de fabrication d'un panneau osb presentant une surface lisse et un panneau osb - Google Patents

Procede de fabrication d'un panneau osb presentant une surface lisse et un panneau osb Download PDF

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Publication number
EP3181314B1
EP3181314B1 EP15003584.8A EP15003584A EP3181314B1 EP 3181314 B1 EP3181314 B1 EP 3181314B1 EP 15003584 A EP15003584 A EP 15003584A EP 3181314 B1 EP3181314 B1 EP 3181314B1
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EP
European Patent Office
Prior art keywords
mat
wood
weight
fibres
plastic
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
EP15003584.8A
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German (de)
English (en)
Other versions
EP3181314A1 (fr
Inventor
Jens Siems
Hendrik Hecht
Dirk MÜLLER
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.)
Swiss Krono Tec AG
Original Assignee
Swiss Krono Tec 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 Swiss Krono Tec AG filed Critical Swiss Krono Tec AG
Priority to HUE15003584A priority Critical patent/HUE049582T2/hu
Priority to PT150035848T priority patent/PT3181314T/pt
Priority to PL15003584T priority patent/PL3181314T3/pl
Priority to EP15003584.8A priority patent/EP3181314B1/fr
Priority to ES15003584T priority patent/ES2750583T3/es
Publication of EP3181314A1 publication Critical patent/EP3181314A1/fr
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Publication of EP3181314B1 publication Critical patent/EP3181314B1/fr
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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
    • B27N3/06—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
    • 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
    • B27N3/12—Moulding of mats from 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
    • B27N7/00—After-treatment, e.g. reducing swelling or shrinkage, surfacing; Protecting the edges of boards against access of humidity
    • B27N7/005—Coating boards, e.g. with a finishing or decorating layer

Definitions

  • the invention relates to a method for producing an OSB in which long, glued with an adhesive wood chips (strands) are oriented in at least three layers scattered, the orientation of the wood chips in adjacent layers offset by preferably 90 ° and then the scattered layers under high Pressure and temperature are pressed to a plate desired thickness, the adhesive hardens.
  • Such a plate is for example from the EP 1 136 636 A1 known.
  • An OSB board is characterized in that it has, from layer to layer, intersecting strands, alternating longitudinally and transversely of the ground plan.
  • the strands have a length of 70 to 200 mm, a width of 6 to 30 mm and a thickness of 0.3 to 1.2 mm.
  • the material used is softwood or hardwood, the wood content in the finished board being between 90% and 98%.
  • the orientation of the chips in the individual layers is realized by successive scattering units.
  • the well-known OSB Oriented Strand Board
  • OSB Oriented Strand Board
  • fibers or chips are sprinkled on the last beach layer, which should compensate for the unevenness of the surface of the core in order to achieve a flat surface as possible.
  • This fine cover layer consists of a wood fines material, which was obtained after a Siebmaschenweite which is smaller than 0.5 mm.
  • the EP 1 847 385 A1 discloses a building panel having a core of glued and compressed wood chips or wood fibers and two cover layers covering the core to the top and bottom.
  • the core consists of a multilayer OSB board.
  • wood-plastic composite material which consists of a wood fiber-plastic mixture with a thermoplastic content of 80%, is spread on a forming belt with a first spreading head.
  • OSB strands are sprinkled onto this layer and then a further cover layer of a wood-plastic composite material is scattered. These scattered layers are finally pressed in a press under high pressure and temperature to a building board.
  • a wood fiber insulation board is known, which is coated with a lamination of a multi-component film.
  • the air-impermeable film is placed on the wood fibers and the structure is then calibrated in a continuous furnace at a temperature of 100 ° C to 170 ° C.
  • the DE 10 2011 076 655 A1 discloses a plant for the production of wood-based panels, with which a Pressgutmatte is scattered, which is compressed in the course of transport to the press by means of a device on its narrow sides transverse to the production direction.
  • the object of the invention is to provide an alternative method for producing an OSB with a smooth surface.
  • the generic method is characterized by the fact that on the last scattered layer of long wood chips a pre-compressed mat of thermoplastic fibers and wood fibers is applied and melting the plastic fibers during pressing and the wood fibers (with the molten plastic) into the between the long wood chips ( Strands) formed spaces are pressed so that forms a smooth surface on the plate after pressing.
  • the plastic fibers made of polypropylene (PP) or polyethylene (PE).
  • the synthetic fibers have a core with a first softening temperature and a jacket surrounding the core with a second softening temperature. Then, a mixture of wood fibers and thermoplastic synthetic fibers are first processed into a mat and pretreated in a Thermobondingofen. Then, when the second softening temperature is lower than the first softening temperature, the clad of the plastic fibers (bi-component fibers) melts and creates tie points in the matrix of plastic and between plastic and wood fibers.
  • Such pretreated mats are conventionally used as wood fiber insulating materials. This pretreated mat can then be densified and then preferably has a thickness of 5 mm at a basis weight of 650 to 700 g / m 2 , preferably 675 g / m 2 .
  • the proportion of plastic in the mat is 5 to 15% by weight, preferably 5 to 10% by weight, in particular 5% by weight or 10% by weight.
  • a WPC mat can also be used.
  • WPC wood-plastic compound
  • the plastic content is increased compared to the wood fiber content.
  • the proportion of plastic in the mat is 30 to 70% by weight and preferably 56% by weight.
  • the pretreated mat then preferably has a thickness of 15 mm and a basis weight of 1,400 to 1,600 g / m 2 , preferably 1,500 g / m 2 .
  • a paper layer can be placed, which is preferably impregnated with synthetic resin, wherein the synthetic resin in particular preferably has a phenol content of 50% by weight.
  • the paper layer preferably has a basis weight of 550 g / m 2 .
  • An OSB produced by the process is characterized by at least three layers of oriented spread long wood chips in which the orientation of the wood chips in adjacent layers is different, and at least one of wood fibers and a thermoplastic plastic covering layer forming a smooth top, wherein the layers of long wood chips have hardened adhesive.
  • the plastic content in the cover layer is 5 to 15% by weight. It is particularly advantageous if the plastic fraction in the top layer is preferably 5 to 10% by weight, preferably 5 or 10% by weight.
  • the adhesive used is preferably polymeric methylene diisocyanate (PMDI), which crosslinks by a polyaddition reaction.
  • the top layer can be covered by a layer of paper.
  • long wood chips having a length of 70 to 200 mm, a width of 6 to 30 mm and a thickness of 0.3 to 1.2 mm are scattered to a lower cover layer 1.
  • a middle layer 2 of long chips is scattered, wherein the chips are offset in the middle layer 2 with respect to the lower cover layer 1 by substantially 90 °. That is, when the chips are oriented in the lower cover layer 1 in the longitudinal direction (transporting direction T), the strands in the middle layer 2 are oriented transversely thereto, that is, they run in the transverse direction.
  • an upper cover layer 3 of long wood chips is scattered, which have the same orientation as the strands in the lower cover layer 1. The wood chips are glued with an adhesive.
  • PF phenol-formaldehyde binder
  • MF urea-formaldehyde binder
  • MUF melamine-urea-formaldehyde binder
  • MUPF melamine-urea-phenol-formaldehyde binder
  • PDMI is also suitable as an adhesive.
  • two different binders can also be used as an adhesive.
  • the chips can be glued, for example, with PDMI and in the outer layers with MUF or MUPF binder.
  • PMDI is used as the adhesive.
  • a pre-compressed mat 4 is placed from a mixture of wood fibers and thermoplastic synthetic fibers.
  • the mat 4 is preferably wound on a roll which is arranged on a device 5 for unwinding the mat 4.
  • the cake consisting of the layers 1, 2, 3, 4 is transported in a hot press 20, which is designed as a Conti press.
  • a hot press 20 which is designed as a Conti press.
  • the layer structure is pressed to an OSB 10 desired thickness.
  • cavities are formed in the individual layers 1, 2, 3 which leave depressions on the upper side of the upper cover layer into which the fibers and the molten plastic of the mat 4 are pressed, so that the in FIG. 2 shown smooth surface 7 sets.
  • the plastic fibers are so-called bi-component fibers. They consist of a core and a shell surrounding the core, whose softening temperature is lower than that of the core.
  • a mixture of wood fibers and plastic fibers is formed into a mat which is precompressed and treated in a thermobonding furnace.
  • the mantle of the bi-component fibers melts and forms points of attachment in the matrix of plastic and also between plastic and wood fibers.
  • the preparation of such mats is known. These are usually used as wood fiber insulation materials.
  • the treated in the thermobonding mat 4 is post-compacted until a thickness of about 5 mm at a basis weight of 650 to 700 g / m 2 , preferably sets 675 g / m 2 .
  • the percentage of plastic in the mat 4 is 5 to 15% by weight.
  • the plastic fraction is preferably 5 to 10% by weight, in particular 5 or 10% by weight.
  • the paper web 6 is preferably impregnated (impregnated) with a phenolic resin, the phenol content in the synthetic resin being about 50% by weight.
  • the paper web 6 has a basis weight of 550 g / m 2 .
  • the structure consisting of the layers 1, 2, 3, 4, 6 is also pressed in a Conti press to an OSB 10 of desired thickness, wherein the smoothness of the top 7 is determined by the fineness of the paper.
  • the paper can be smooth or textured. With a structured surface, for example, when the OSB 10 is to be used as shuttering panel, the visible surfaces of the cast concrete can be optically selectively influenced.
  • the layers 1, 2, 3 are constructed identically to the previously described embodiments.
  • the mat 4 has a plastic content of 30 to 70% by weight, ie 70 to 30% by weight of wood fibers. Preferably, the plastic content is 56% by weight and the wood fiber content is consequently 44% by weight.
  • This mat 4 has a weight per unit area of 1,400 to 1,600 g / m 2 and in particular 1,500 g / m 2 . Its pre-compressed thickness is about 15 mm.
  • the structure of the layers 1, 2, 3, 4 is conveyed through in the transport direction T by a Conti-press 20 and actively cooled down by a cooling device 30 at the end of the Conti-press 20 to a rapid solidification of the plate 10 and a delay of the upper Layer 4 to prevent.
  • a cooling device 30 at the end of the Conti-press 20 to a rapid solidification of the plate 10 and a delay of the upper Layer 4 to prevent.
  • the wood-plastic composite is cooled down so far that the wood-plastic composite dissolves from the steel strip of the Conti press.
  • the bonding of the wood-plastic composite to the OSB becomes active.
  • the OSB board can be used as a tongue and groove plate for industrial floors. If the plastic content is 30 to 70% by weight, it can be used as a roof panel with a water-repellent functional layer and / or an optional slip-resistant effect.
  • the smooth upper side 7 opens up further fields of application for the OSB 10.
  • panels can be used in furniture construction, because further coatings can also be applied to the surface.
  • the further coatings can be lacquer or else melamine resin papers as well as HPL / CPL.
  • such panels can be used in the interior of a roof truss, and the plate can be used as the insulation between the rafters holding panel. Due to the smooth surface of the panels can be painted immediately, so that a previously required plasterboard can be omitted.

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 (15)

  1. Procédé de fabrication d'un panneau OSB, dans lequel de longs copeaux de bois encollés sont dispersés en étant orientés dans au moins trois couches (1, 2, 3), dans lequel l'orientation des copeaux de bois dans des couches adjacentes (1, 2, 3) s'effectue en décalage, et ensuite les couches dispersées (1, 2, 3) sont pressées à haute pression et à haute température pour donner une plaque (10) d'épaisseur désirée, la colle durcit, une nappe (4) pré-comprimée de fibres thermoplastiques en matière plastique et en fibres de bois est posée sur la dernière couche dispersée (3) de longs copeaux de bois, lors du pressage, les fibres en matière plastique fondent, et les fibres de bois sont pressées dans les espaces intermédiaires formés entre les longs copeaux de bois, de sorte qu'après le pressage il se forme une surface lisse (7) sur la plaque (10).
  2. Procédé selon la revendication 1, caractérisé en ce que les fibres en matière plastique sont constituées en polypropylène ou en polyéthylène.
  3. Procédé selon la revendication 2, caractérisé en ce que les fibres en matière plastique présentent un noyau ayant une première température de ramollissement et une enveloppe entourant le noyau et ayant une seconde température de ramollissement.
  4. Procédé selon la revendication 3, caractérisé en ce que la seconde température de ramollissement est inférieure à la première température de ramollissement.
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce que la nappe (4) en fibres de bois et en fibres de matière plastique présente une épaisseur de 5 mm.
  6. Procédé selon la revendication 5, caractérisé en ce que la nappe (4) présente un grammage de 650 à 700 g/m2, de préférence de 675 g/m2.
  7. Procédé selon la revendication 5 ou 6, caractérisé en ce que la part en matière plastique dans la nappe est de 5 à 15 % en poids, de préférence de 5 à 10 % en poids, de manière particulièrement préférée de 5 ou de 10 % en poids.
  8. Procédé selon la revendication 5 ou 6, caractérisé en ce que la part en matière plastique dans la nappe (4) est de 30 à 70 % en poids, en préférence de 56 % en poids.
  9. Procédé selon la revendication 8, caractérisé en ce que la nappe (4) en fibres de bois et en fibres de matière plastique présente une épaisseur de 15 mm.
  10. Procédé selon la revendication 8 ou 9, caractérisé en ce que la nappe pré-comprimée (4) présente un grammage de 1400 à 1600 g/m2, de préférence de 1500 g/m2.
  11. Procédé selon l'une des revendications précédentes, caractérisé en ce que une couche en papier (6) est posée sur la nappe pré-comprimée (4).
  12. Procédé selon la revendication 11, caractérisé en ce que la couche en papier (6) est imprégnée d'une résine synthétique, la résine synthétique présentant de préférence une part en phénol de 50 % en poids.
  13. Procédé selon la revendication 12, caractérisé en ce que la couche en papier présente un grammage de 550 g/m2.
  14. Procédé selon l'une des revendications précédentes, caractérisé en ce que la plaque pressée (10) est refroidie par voie active.
  15. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que
    les fibres en bois sont pressées avec la matière plastique fondue jusque dans les espaces intermédiaires.
EP15003584.8A 2015-12-16 2015-12-16 Procede de fabrication d'un panneau osb presentant une surface lisse et un panneau osb Active EP3181314B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
HUE15003584A HUE049582T2 (hu) 2015-12-16 2015-12-16 Eljárás sima felületû OSB elõállítására, valamint OSB
PT150035848T PT3181314T (pt) 2015-12-16 2015-12-16 Processo para produção um osb com uma superfície lisa e um osb
PL15003584T PL3181314T3 (pl) 2015-12-16 2015-12-16 Sposób produkcji płyty OSB z gładką powierzchnią i płyta OSB
EP15003584.8A EP3181314B1 (fr) 2015-12-16 2015-12-16 Procede de fabrication d'un panneau osb presentant une surface lisse et un panneau osb
ES15003584T ES2750583T3 (es) 2015-12-16 2015-12-16 Procedimiento para fabricar una OSB con superficie lisa y una OSB

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15003584.8A EP3181314B1 (fr) 2015-12-16 2015-12-16 Procede de fabrication d'un panneau osb presentant une surface lisse et un panneau osb

Publications (2)

Publication Number Publication Date
EP3181314A1 EP3181314A1 (fr) 2017-06-21
EP3181314B1 true EP3181314B1 (fr) 2019-08-14

Family

ID=54936750

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15003584.8A Active EP3181314B1 (fr) 2015-12-16 2015-12-16 Procede de fabrication d'un panneau osb presentant une surface lisse et un panneau osb

Country Status (5)

Country Link
EP (1) EP3181314B1 (fr)
ES (1) ES2750583T3 (fr)
HU (1) HUE049582T2 (fr)
PL (1) PL3181314T3 (fr)
PT (1) PT3181314T (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110281342A (zh) * 2019-06-12 2019-09-27 李珂 防火复合刨花板及其制备方法
CN110281339A (zh) * 2019-06-12 2019-09-27 李珂 一种阻燃刨花板的制备方法
DE102019121471A1 (de) * 2019-08-08 2021-02-11 Siempelkamp Maschinen- Und Anlagenbau Gmbh Werkstoffplatte und Verfahren zur Herstellung einer Werkstofplatte

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4364984A (en) 1981-01-23 1982-12-21 Bison-Werke, Bahre & Greten Gmbh & Co., Kg Surfaced oriented strand board
TR200401512T4 (tr) 2000-03-24 2004-08-23 Kronotec Ag Ahşap parçacıklı plakalar, özellikle kalıp plakaları
DE102006018277B4 (de) * 2006-04-20 2008-04-17 Kronotec Ag Bauplatte und Verfahren zur Herstellung einer Bauplatte
DE102011076655A1 (de) * 2011-05-28 2012-11-29 Dieffenbacher GmbH Maschinen- und Anlagenbau Verfahren und Anlage zur Herstellung von Werkstoffplatten, wie Span, Schnitzel-, Faser- oder ähnlichen Holzwerkstoffplatten sowie Kunststoffplatten und eine Vorrichtung zur Verdichtung der Schmalseiten einer Pressgutmatte
DE102013003947A1 (de) * 2013-03-07 2014-09-11 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zur Herstellung einer wenigstens zweischichtigen Platte und wenigstens zweischichtige Platte
EP2801675A1 (fr) * 2013-05-07 2014-11-12 Kronotec AG Plaque d'isolant en fibres de bois pourvue d'au moins un doublage et procédé de fabrication de celle-ci

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
PT3181314T (pt) 2019-11-15
PL3181314T3 (pl) 2019-12-31
HUE049582T2 (hu) 2020-10-28
ES2750583T3 (es) 2020-03-26
EP3181314A1 (fr) 2017-06-21

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