EP0518017B2 - 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
EP0518017B2
EP0518017B2 EP92105877A EP92105877A EP0518017B2 EP 0518017 B2 EP0518017 B2 EP 0518017B2 EP 92105877 A EP92105877 A EP 92105877A EP 92105877 A EP92105877 A EP 92105877A EP 0518017 B2 EP0518017 B2 EP 0518017B2
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EP
European Patent Office
Prior art keywords
layer
wood fibre
water
board
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.)
Expired - Lifetime
Application number
EP92105877A
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German (de)
English (en)
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EP0518017B1 (fr
EP0518017A1 (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
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Pavatex SA
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Publication date
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Application filed by Pavatex SA filed Critical Pavatex SA
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Publication of EP0518017B1 publication Critical patent/EP0518017B1/fr
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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 use of Fiberboard according to the preamble of claim 1.
  • the invention further relates to a method of manufacture a wood fiber board according to the preamble of claim 6.
  • Fibreboard is made from wood fiber or lignocellulose-containing fiber material.
  • Raw material containing cellulose and hemicellulose in its fibrous, anatomical basic elements in the Disassembled in the form of individual fibers and fiber bundles.
  • the fiber material is shaped, compressed and pressed. This is primarily the Matting of the fibers and the natural binding power utilized. (Ullmann's encyclopedia of technical chemistry, 4th edition, Weinheim, New York, 1976, volume 12, page 720).
  • hard wood fiber boards with a bulk density of more than 800 kg / m 3 hard wood fiber boards with a bulk density of more than 800 kg / m 3 , medium hard wood fiber boards with a bulk density of more than 350 kg / m 3 to 800 kg / m 3 and porous wood fiber boards with a bulk density of 230 - 350 kg are used / m 3 differentiated.
  • the manufacture of fiberboard is well known and involves the preparation of the raw material and the production of the wood chips, the pre-treatment by steaming, boiling or impregnating with Lyes, defibrillation, wet or dry processing of the fibers and subsequently in particular the formation a fiber mat, hot pressing in a wet or Dry press and aftertreatments, especially the thermal hardening (cf. Ullmanns Encyclopedia of technical chemistry, op. cit., page 720 ff.).
  • Wood fiber hardboards are used especially for the construction of under-roof structures that are sealed against meteor water used and so far for so-called Cold roof constructions according to Figure 1, in which between the thermal insulation 2 and the one above the rafters 1 A ventilation space 4 is provided under roof 3.
  • the object of the invention is therefore underlying a Using a To create fiberboard, which looks like one conventional hardboard can be used by means of which the condensation problem in the under-roof area is manageable.
  • the water absorbent Layer thicker than the essentially waterproof one Layer.
  • the vapor diffusion resistance the essentially waterproof layer due to their small thickness much deeper than a wood fiber hardboard of a similar overall thickness as the wood fiber board according to the invention; so can be Plate vapor diffusion resistance values below 50 achieve, while the values in conventional plates in usually in the range of 80 to 120.
  • the water absorbing surface of the fibreboard with the characteristic for fiberboard from the screen press plate surface roughness originating in the manufacture Mistake.
  • the Use as a sub-roof panel on a This rough plate side of the thermal insulation layer becomes the roof facing, which has not been the case so far because the rough side, as the anti-slip side, as Under the roof top has been relocated.
  • the other, previously smooth plate side with one anti-slip embossed pattern is therefore now also possible the other, previously smooth plate side with one anti-slip embossed pattern.
  • a method of making a Fibreboard for the use is according to claim 6 featured.
  • FIG. 1 shows schematically the structure of a Cold roof construction with wood fiber hardboard as Under roof.
  • the thermal insulation 2 is arranged, and is above this a ventilation space 4 is provided to remove moisture, which of the conventional wood fiber hardboards, which form the sub-roof 3 are not sufficiently taken up and can be dissipated.
  • This insufficient Moisture absorption or vapor diffusion ability the the space-consuming ventilation space will still be deteriorated in that the conventional plates have a smooth side and a rough side (the when pressing out of the finely perforated sieve plate results) and for safety reasons (risk of slipping) with the laid smooth side against the thermal insulation 2 pointing Need to become.
  • Counter battens 5 brick battens 6 and bricks 7.
  • the preferred, space-saving roof construction is shown schematically in Figure 2, wherein same reference numerals same components as in Figure 1 demonstrate.
  • the ventilation space 4 is in the warm roof not provided. This means that through the roof diffusing steam, which - depending on the outside and inside temperature - Above the thermal insulation 2 essential can cool and possibly condense from the plates of the sub-roof 3 first recorded and saved and can be let through as water vapor.
  • Figure 3 shows a sectional view of a Fibreboard 30 with two layers.
  • the less fat Layer 32 is structured like a conventional one Hardboard, i.e. this layer consists of short fibers or short fiber bundles of fine fraying.
  • This dense hardboard is already on relatively good water repellency. To this property too can improve this layer during manufacture Water repellents are added; known and building biological Paraffin is particularly harmless.
  • the thicker layer 31 is e.g. so constructed like a conventional medium-hard (also as semi-hard designated) fiberboard.
  • This layer consists of long fiber bundles of fine defibrillation, which can be found in the Stretch out after eating again and one 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 in extremely humid conditions conceivable.
  • the surface 33 the plate 30 formed by the water-absorbing layer 31 is formed during manufacture on the screen press plate rests and with the characteristic Pattern is provided, as schematically in Figure 4a is indicated this pattern or that resulting from it resulting roughness of the surface leads to a substantial enlarged surface for the inclusion of Water is effective.
  • this rough Lay against the thermal insulation This has not been done so far because the rough Side as anti-slip side as the outside of the Sub-roof was used.
  • the Fibreboard for the use according to the invention is therefore preferably the other, previously smooth plate side with a non-slip Embossed pattern.
  • the plate thickness is preferably approximately 6 mm chosen, with the two-layer variant the denser Layer 32 is approximately 1 mm thick and the other layer 31 is about 5 mm thick. This results in good vapor permeability, a large water storage capacity and a good seal against meteor water.
  • the fiberboard In the manufacture of the fiberboard can first formed a nonwoven fabric in a known manner which corresponds to layer 31 after pressing, a fleece, which is a medium hard Fiberboard corresponds. This fleece is then a second fleece applied, which after pressing the Layer 32 corresponds, that is to say to form a hardboard made of wood fiber is executed. The two lying on top of each other Nonwovens are then fed to the pressing process, whereby preferably the fleece forming layer 31 the screen press plate rests. The other press plate is as mentioned, to form the anti-slip surface 34 structured. After pressing, the wood fiber board post-treated in a known manner.
  • the wood fiber board described forms one biologically harmless product, on the one hand is weatherproof and on the other hand water-absorbing and water retention. Thanks to the deep vapor diffusion resistance the absorbed water can well into the environment be delivered.
  • the wood fiber board is suitable Excellent as a construction element due to these properties for sub-roofs on 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)

Claims (6)

  1. Utilisation de plaques (30) en fibres de bois agglomérées pour réaliser un toit intérieur comportant une cloison d'isolation thermique (2), les plaques en fibres de bois (30) ayant une structure en couches comportant une couche essentiellement imperméable (32) en aggloméré de fibres de bois dur et au moins une seconde couche (31) avoisinante en aggloméré de fibres de bois réalisé pour pouvoir absorber de l'eau, caractérisée en ce que
    a) la surface extérieure de la plaque en fibres de bois (30) formée par la couche en aggloméré dur (32) présente un relief antidérapant (11, 12) et que
    b) les plaques en fibres de bois reposent par leurs couches absorbantes sur la cloison d'isolation thermique.
  2. Utilisation selon la revendication 1, caractérisée en ce que la couche absorbante est réalisée sous forme d'une couche en aggloméré de dureté moyenne.
  3. Utilisation selon une des revendications 1 ou 2, caractérisée en ce que la surface extérieure (33) de la plaque en fibres de bois (30) formée par la couche absorbante (31) comporte un relief augmentant sa surface.
  4. Utilisation selon une des revendications 1 à 3, caractérisée en ce que la couche absorbante (31) est plus épaisse que la couche essentiellement imperméable (32).
  5. Utilisation selon la revendication 4, caractérisée en ce que la plaque en aggloméré de fibres de bois présente une épaisseur totale d'environ 6 mm, la couche dure en fibres de bois ayant environ 1 mm d'épaisseur et la couche absorbante environ 5 mm d'épaisseur.
  6. Procédé pour la fabrication d'une plaque en fibres de bois destinée à être utilisée selon une des revendications 1 à 5, dans lequel on applique sur une première paillasse de fibres de bois destinée à former une plaque en aggloméré moyennement dure une seconde paillasse de fibres en bois destinée à former une plaque en aggloméré dure, on comprime ensuite simultanément les deux paillasses, la première reposant pendant la compression sur la plaque de compression ajourée, caractérisé en ce que pendant la compression la seconde paillasse est en contact avec une plaque de compression comportant un relief d'impression qui améliore le comportement antidérapant lorsqu'on marche sur la couche dure de la plaque en fibres de bois agglomérées.
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 EP0518017A1 (fr) 1992-12-16
EP0518017B1 EP0518017B1 (fr) 1995-01-25
EP0518017B2 true 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)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4430937C2 (de) * 1994-08-31 1996-09-19 Kurprinz Georg Keil Gmbh Unter Verfahren zur Herstellung eines mehrlagigen Dämmaterials beliebiger Form aus Holzfasern
FR2758149B1 (fr) * 1997-01-03 1999-02-05 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

Family Cites Families (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
CH661555A5 (en) * 1983-10-24 1987-07-31 Leganorm Ag Insulating element for a heat-insulating and sound-insulating roof substructure
EP0186503B1 (fr) * 1984-12-28 1991-02-27 Forintek Canada Corp. Procédé pour la fabrication d'une plaque composite à dimensions

Also Published As

Publication number Publication date
DE59201260D1 (de) 1995-03-09
ATE117619T1 (de) 1995-02-15
EP0518017B1 (fr) 1995-01-25
EP0518017A1 (fr) 1992-12-16

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