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EP0518017A1 - Plaque en fibres de bois, procédé pour sa fabrication et utilisation d'une telle plaque - Google Patents

Plaque en fibres de bois, procédé pour sa fabrication et utilisation d'une telle plaque Download PDF

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Publication number
EP0518017A1
EP0518017A1 EP92105877A EP92105877A EP0518017A1 EP 0518017 A1 EP0518017 A1 EP 0518017A1 EP 92105877 A EP92105877 A EP 92105877A EP 92105877 A EP92105877 A EP 92105877A EP 0518017 A1 EP0518017 A1 EP 0518017A1
Authority
EP
European Patent Office
Prior art keywords
wood fiber
layer
board
water
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
EP92105877A
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German (de)
English (en)
Other versions
EP0518017B1 (fr
EP0518017B2 (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.)
Pavatex SA
Original Assignee
Pavatex SA
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Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4218271&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0518017(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Pavatex SA filed Critical Pavatex SA
Publication of EP0518017A1 publication Critical patent/EP0518017A1/fr
Publication of EP0518017B1 publication Critical patent/EP0518017B1/fr
Application granted granted Critical
Publication of EP0518017B2 publication Critical patent/EP0518017B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D12/00—Non-structural supports for roofing materials, e.g. battens, boards
    • 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
    • B27N1/006—Pretreatment of moulding material for increasing resistance to swelling by humidity
    • 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
    • B27N3/20—Moulding or pressing characterised by using platen-presses

Definitions

  • the invention relates to a wood fiber board.
  • the invention further relates to a method for producing the fiberboard and the use thereof.
  • Wood fiber boards are made from wood fibers or lignocellulose-containing fiber material.
  • the raw material containing lignin, cellulose and hemicellulose is broken down into its fibrous, anatomical basic elements in the form of individual fibers and fiber bundles by the action of heat, moisture and mechanical pressure forces in fiberizing plants.
  • the fiber material is shaped, compressed and pressed.
  • the matting of the fibers and the natural binding power are primarily used.
  • hard wood fiber boards with a bulk density of more than 800 kg / m3, medium-hard wood fiber boards with a bulk density of more than 350 kg / m3 to 800 kg / m3 and porous wood fiber boards with a bulk density of 230 - 350 kg / m3 are distinguished .
  • the production of wood fiber boards is well known and includes the preparation of the raw material and the production of the wood chips, the pretreatment by steaming, cooking or impregnation with lye, the fiber removal, the wet or dry preparation of the fibers and subsequently in particular the formation of a fiber mat, the hot pressing in a wet or dry press and post-treatments, especially thermal curing (see Ullmann's Encyclopedia of Industrial Chemistry, loc. cit., page 720 ff.).
  • Wood fiber hardboards are used especially for used the construction of sub-roof structures that are impervious to meteoric water, and so far for so-called cold-roof constructions according to FIG. It would, however, be desirable to be able to use hardwood fibreboards even in so-called warm roof constructions according to FIG. 2, in which there is no ventilation space and the fibreboard 3 lies directly on the thermal insulation layer.
  • the problem of condensation between the thermal insulation layer and the wood fiber board arises, which cannot be solved satisfactorily with conventional hard boards.
  • the invention is therefore based on the object of providing a wood fiber board which can be used like a conventional wood fiber hard board, but by means of which the condensation problem can be controlled in all construction applications, but in particular in the under-roof area.
  • a wood fiber board which is characterized by a layer structure with an essentially water-impermeable wood fiber hard board layer, and with at least one adjoining second layer of wood fiber material, which is designed to absorb water.
  • the water-absorbing layer is preferably thicker than the essentially water-impermeable layer. On the one hand, this results in a high water absorption capacity and water storage capacity of the wood fiber board. On the other hand, the vapor diffusion resistance of the essentially watertight layer, owing to its small thickness, is considerably lower than in the case of a hardboard made of wood fiber with a total thickness similar to that of the wood fiber board according to the invention; This enables the plate to achieve vapor diffusion resistance values of less than 50, whereas the values for conventional plates are usually in the range from 80 to 120.
  • this rough panel side faces the thermal insulation layer, which has not been the case to date since the rough side, as the anti-slip side, has been laid as the under-roof top.
  • the other, previously smooth board side is now also provided with an anti-slip embossed pattern.
  • a method for producing the wood fiber board according to the invention is characterized in accordance with claim 7.
  • the wood fiber board is used according to claim 10.
  • FIG. 1 shows schematically the structure of a cold roof construction with wood fiber hardboard as a sub-roof.
  • a battens 9 and a vapor barrier 8 are connected to the ceiling 10 on the room side.
  • the thermal insulation 2 is arranged between the rafters 1, and above this a ventilation space 4 is provided in order to remove moisture which cannot be adequately absorbed and dissipated by the conventional wood fiber hard boards which form the sub-roof 3.
  • This inadequate moisture absorption or vapor diffusion ability which requires the space-consuming ventilation space, still becomes worsened by the fact that the conventional panels have a smooth side and a rough side (which results from the finely perforated sieve plate during pressing) and must be installed with the smooth side pointing towards the thermal insulation 2 for safety reasons (risk of slipping).
  • the counter battens 5, the brick battens 6 and the tiles 7 follow on the subroof 3.
  • FIG. 2 The preferred, space-saving warm roof construction is shown schematically in FIG. 2, the same reference numerals showing the same components as in FIG. 1.
  • the ventilation space 4 is not provided in the warm roof. This means that the steam diffusing through the roof, which - depending on the outside and inside temperature - can cool down and possibly condense above the thermal insulation 2, can initially be absorbed and stored by the panels of the sub-roof 3 and let through as water vapor.
  • FIG. 3 shows a sectional view of a wood fiber board 30 with two layers.
  • the less thick layer 32 is constructed like a conventional hardboard, i.e. this layer consists of short fibers or short bundles of fine fibers.
  • This dense hardboard is already relatively good water repellent.
  • a hydrophobizing agent can be added to this layer during manufacture; Paraffin, in particular, is known and harmless to building biology.
  • the thicker layer 31 is e.g. constructed like a conventional medium-hard (also called semi-hard) fibreboard.
  • This layer consists of long fiber bundles of fine fiberisation, which expand again after production after pressing and form a layer with a relatively large number of pores and good water absorption and storage capacity.
  • Another layer e.g. with the properties of a porous fibreboard for applications under extremely humid conditions is conceivable.
  • This pattern or the resulting roughness of the surface leads to a substantially enlarged surface which is effective for the absorption of water.
  • this rough side is laid against the thermal insulation, contrary to the usual installation practice. This has not been done so far, since the rough side was used as an anti-slip side as the outside of the sub-roof.
  • the other side of the board, which was previously smooth, is therefore preferably embossed with an anti-slip pattern.
  • a pattern can result as indicated in FIG. 3 by 34 and shown schematically in FIG. 4b with depressions and elevations 11, 12 which, when used as a sub-roof, enable the latter to be walked on safely.
  • the plate thickness is preferably chosen to be approximately 6 mm, the denser layer 32 being approximately 1 mm thick in the two-layer variant and the other layer 31 being approximately 5 mm thick. This results in good vapor permeability, a large water storage capacity and a good seal against meteor water.
  • a non-woven fabric can first be formed in a known manner, which corresponds to the layer 31 after pressing, that is to say a non-woven fabric which corresponds to a medium-hard fiber board.
  • a second fleece is then applied to this fleece, which corresponds to the layer 32 after pressing, that is to say it is designed to form a hard wood fiber board.
  • the two lying on top of each other Nonwovens are then fed to the pressing process, the nonwoven which forms layer 31 preferably resting on the screen press plate.
  • the other press plate is structured to form the anti-slip surface 34.
  • the wood fiber board is treated in a known manner.
  • the wood fiber board described forms a biologically harmless product, which is on the one hand weatherproof and on the other hand water-absorbing and water-storing. Thanks to the deep vapor diffusion resistance, the absorbed water can be released into the environment. Due to these properties, the fibreboard is ideally suited as a construction element for sub-roofs in warm roofs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Architecture (AREA)
  • Forests & Forestry (AREA)
  • Manufacturing & Machinery (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Laminated Bodies (AREA)
  • Building Environments (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Artificial Filaments (AREA)
EP92105877A 1991-06-14 1992-04-04 Plaque en fibres de bois, procédé pour sa fabrication et utilisation d'une telle plaque Expired - Lifetime EP0518017B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1773/91 1991-06-14
CH177391 1991-06-14

Publications (3)

Publication Number Publication Date
EP0518017A1 true EP0518017A1 (fr) 1992-12-16
EP0518017B1 EP0518017B1 (fr) 1995-01-25
EP0518017B2 EP0518017B2 (fr) 1998-09-23

Family

ID=4218271

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92105877A Expired - Lifetime EP0518017B2 (fr) 1991-06-14 1992-04-04 Plaque en fibres de bois, procédé pour sa fabrication et utilisation d'une telle plaque

Country Status (3)

Country Link
EP (1) EP0518017B2 (fr)
AT (1) ATE117619T1 (fr)
DE (1) DE59201260D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4430937A1 (de) * 1994-08-31 1996-03-07 Kurprinz Georg Keil Gmbh Unter Verfahren zur Herstellung eines mehrlagigen Dämmaterials beliebiger Form aus Holzfasern
FR2758149A1 (fr) * 1997-01-03 1998-07-10 Sarl Soveco Reunion Complexe de couverture de toiture a pente avec film pare-pluie a performances d'isolation ameliorees
DE102016101669A1 (de) * 2016-01-29 2017-08-03 Saint-Gobain Isover G+H Ag Holzweichfaserdämmplatte für Wärme- und/oder Schalldämmung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB711659A (en) * 1951-05-05 1954-07-07 Capuana Per L Ind Della Lignoc Process for manufacturing wood fibre panels
DE1900053A1 (de) * 1969-01-02 1970-08-13 Eugen Siempelkamp Anlage zur Herstellung von Spanplatten,Faserplatten u.dgl.
DE3322375A1 (de) * 1983-06-22 1985-01-03 Karl 5249 Hamm Rische Schall- und waermedaemmende platte und verfahren zu ihrer herstellung
DE3437446A1 (de) * 1983-10-24 1985-05-02 Leganorm AG, Winterthur Isolierelement fuer ein waerme- und schalldaemmendes unterdach
EP0186503A1 (fr) * 1984-12-28 1986-07-02 Forintek Canada Corp. Procédé pour la fabrication d'une plaque composite à dimensions

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB711659A (en) * 1951-05-05 1954-07-07 Capuana Per L Ind Della Lignoc Process for manufacturing wood fibre panels
DE1900053A1 (de) * 1969-01-02 1970-08-13 Eugen Siempelkamp Anlage zur Herstellung von Spanplatten,Faserplatten u.dgl.
DE3322375A1 (de) * 1983-06-22 1985-01-03 Karl 5249 Hamm Rische Schall- und waermedaemmende platte und verfahren zu ihrer herstellung
DE3437446A1 (de) * 1983-10-24 1985-05-02 Leganorm AG, Winterthur Isolierelement fuer ein waerme- und schalldaemmendes unterdach
EP0186503A1 (fr) * 1984-12-28 1986-07-02 Forintek Canada Corp. Procédé pour la fabrication d'une plaque composite à dimensions

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Bauen mit Kunststoff 1986 Nr. 1, Darmstadt, Deutschland, Seite 23, macht Dachbel}ftung }berfl}ssig *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4430937A1 (de) * 1994-08-31 1996-03-07 Kurprinz Georg Keil Gmbh Unter Verfahren zur Herstellung eines mehrlagigen Dämmaterials beliebiger Form aus Holzfasern
FR2758149A1 (fr) * 1997-01-03 1998-07-10 Sarl Soveco Reunion Complexe de couverture de toiture a pente avec film pare-pluie a performances d'isolation ameliorees
DE102016101669A1 (de) * 2016-01-29 2017-08-03 Saint-Gobain Isover G+H Ag Holzweichfaserdämmplatte für Wärme- und/oder Schalldämmung

Also Published As

Publication number Publication date
DE59201260D1 (de) 1995-03-09
EP0518017B1 (fr) 1995-01-25
EP0518017B2 (fr) 1998-09-23
ATE117619T1 (de) 1995-02-15

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