EP1005406A1 - Materiau composite et utilisation de bois generalement classes comme debris ligneux - Google Patents

Materiau composite et utilisation de bois generalement classes comme debris ligneux

Info

Publication number
EP1005406A1
EP1005406A1 EP98925679A EP98925679A EP1005406A1 EP 1005406 A1 EP1005406 A1 EP 1005406A1 EP 98925679 A EP98925679 A EP 98925679A EP 98925679 A EP98925679 A EP 98925679A EP 1005406 A1 EP1005406 A1 EP 1005406A1
Authority
EP
European Patent Office
Prior art keywords
wood
substance
essentially
composite material
residue
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.)
Withdrawn
Application number
EP98925679A
Other languages
German (de)
English (en)
Inventor
Risto Meriö
Juhani Kiistala
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1005406A1 publication Critical patent/EP1005406A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
    • E04C2/16—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of fibres, chips, vegetable stems, or the like

Definitions

  • the invention relates to a composite material, that is made preferably by gluing, casting or correspondingly as a totally uniform entirety at least of an essentially wood based stiffening substance and of an essentially plastic based binding substance.
  • stiffening substance wood has been used, that is usually classified as wood residue, such as branches, crowns, logging residue, coppices and/or like in an essentially elongated form.
  • outside walls of the elements are plates made of wood- plastic composite, that are combined e.g. by form ties and foam plastics, that has been casted inbetween the same.
  • the matrix between the outside walls comprises e.g. chopped wood.
  • beam solutions having a closed cross-section and in which side walls are formed of the type of composite plates as described above, inside of which there has been placed strips of wood that are arranged along the longitudinal direction of the beam and that are combined to the beam entirety by casting with a matrix, whereby according to the document e.g.
  • a two-component glue based on polyurethane is proposed to be used as the matrix.
  • the solutions according to the document above are meant particularly for building purposes, that is why they include always the actual carrying wall structures made of composite structures and a filling situated inside the above, that consists primarily of a matrix. A wider use of the solutions in question than the purpose above does not thus easily come into question.
  • the wood substances inside the type of beam structure in question are formed usually from strips, that are produced by sawing wood, so the solution in question as such is not in any way "nature friendly” .
  • particularly combining wall structures and the filling structure placed inside the same, that have very differing compositions is a very multiphased and a very demanding process, when being carried out e.g. by casting among other things in order to avoid cast pores which, however, usually do not have significant meaning in element structures or beams being used for building purposes .
  • Patent document US 5,543,197 there has been presented a solution, that is to be combined on the principle described above to achieve plates or beams made of bamboo. It is essential in this solution as well, that the result is very woody, so that the binding substance combining the wood substance is not meant or it is not either possible by the same to bring out any kind of significant visual influence for the part of the whole entirety.
  • the composite material and use of wood usually classified as wood residue according to this invention is aimed to achieve a decisive improvement in the prob- le s described above and thus to raise essentially the prior art .
  • the composite material according to the invention is primarily characterized in, that the wood substance consists of pieces of wood, that are arranged side by side and essentially parallelly essentially at the same level to form one or several wood substance layers placed one after another/one on top of the other.
  • the composite material may be used in most heterogeneous connections starting e.g. from building purposes to other utility purposes as well, such as for manufacturing of pieces of furniture or of most heterogeneous ornamental or utility articles.
  • the wood sub- stance, that is being used for manufacturing is barked and dried, in addition to which as the binding substance advantageously a single or multicomponent thermoplastic, thermoset or a corresponding type of poly-, elastomer or like is being used.
  • the binding substance advantageously a single or multicomponent thermoplastic, thermoset or a corresponding type of poly-, elastomer or like is being used.
  • it is furthermore possible to use different kinds of filling and colouring substances e.g.
  • the composite material according to the invention has most heterogeneous possibilities for utilization from this point of view as well, when compared e.g. to traditional wood structures. It is possible to make blocks from the composite material according to the invention, because the material in question may be machined by almost all normal machining methods (milling, drilling, sawing, grinding etc.). Also formed pieces, structural beams etc. may be manufactured from the same having finished appearance and dimensions.
  • Fig. 1 shows an advantageous structural solution of a block as a perspective view, that is made of the composite material according to the invention
  • Fig. 2 shows goods, that are made from the composite material according to the invention.
  • the invention relates to a composite material, that is made preferably by gluing, casting or correspondingly as a totally uniform entirety at least of an essentially wood based stiffening substance 1 and of an essentially plastic based binding substance 2.
  • a stiffening substance 1 wood has been used, that is usually classified as wood residue 1', such as branches, crowns, logging residue, coppices and/or like in an essentially elongated form.
  • the wood substance l 1 consists of pieces of wood l'a, that are arranged side by side and essentially parallelly s essentially at the same level to form one or several wood substance layers I placed one after another/one on top of the other.
  • the wood substance 1 ' to be used for manufacturing is barked and dried.
  • the binding substance 2 a single or multicomponent thermoplastic, thermoset or a corresponding type of poly-, elastomer or like is being used.
  • the longitudinal direction p of the pieces of wood l'a placed in several second wood substance layers I ' is arranged to deviate from the longitudinal direction s of the pieces of wood l'a placed in each first wood substance layer I.
  • the longitudinal direction p of every other wood substance layer I ' is arranged essentially perpendicular with respect to the longitudinal direction s of each first wood substance layer I .
  • an auxiliary substance 3 such as a colour substance has been mixed to the plastic based binding substance 2, to achieve the desired appearance, such as colouring of the composite material. It is naturally possible in this connection to mix e.g. stones or other kind of natural material or glass, metal etc. to the binding substance 2, also.
  • the crucial idea is particularly use of wood usually classified as wood residue, such branches, crowns, logging residue, coppices and/or like in an essentially elongated form in a composite material, that is formed e.g. by casting or correspon- dingly as a totally uniform entirety at least of an essentially wood based stiffening substance 1 and of an essentially plastic based binding substance 2, and, in which the wood substance 1 ' being used as the stiffening substance consist of pieces of wood l'a, that are arranged side by side and essentially parallelly s essentially at the same level to form one or several wood substance layers I placed one after another/one on top of the other.
  • wood substance 1 ' being used as the stiffening substance consist of pieces of wood l'a, that are arranged side by side and essentially parallelly s essentially at the same level to form one or several wood substance layers I placed one after another/one on top of the other.
  • the composite material offers most heterogeneous possibilities for utilization, in addition to which the same may be used in addition to e.g. decorating goods of structures or for ornamental goods naturally for e.g. manufacturing of pieces of furniture as well as of usual structural components or beams, plates or the like.
  • the composite material according to the invention may be produced e.g. by low/high pressure casting into an open or closed mould or accordingly.
  • exhaust of gas or air from the mould may be carried out advantageously by underpressure.
  • the wood substance may be placed or settled into the mould in very many ways, whereby during installation e.g. different kinds of reinforcement structures based on 2-D or 3-D symmetry may be exploited.
  • the volume of the wood substance is aimed to be kept over 80 %.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Abstract

L'invention concerne un matériau composite, fabriqué de préférence par collage, moulage ou, dans le même ordre d'idées, sous la forme d'une entité totalement uniforme, à partir d'au moins une substance rigidifiante (1) à base de bois et d'une substance liante (2) essentiellement à base de plastique. On a habituellement utilisé comme substance rigidifiante (1) des bois, généralement classés comme débris ligneux (1'), tels que des branches, des cimes, des résidus d'exploitation, des taillis et/ou similaires de forme essentiellement allongée.
EP98925679A 1997-07-15 1998-06-16 Materiau composite et utilisation de bois generalement classes comme debris ligneux Withdrawn EP1005406A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI972994 1997-07-15
FI972994A FI101775B (fi) 1997-07-15 1997-07-15 Yhdistelmämateriaali ja tavanomaisesti jätteeksi luokiteltavan puuaine ksen käyttö
PCT/FI1998/000516 WO1999003657A1 (fr) 1997-07-15 1998-06-16 Materiau composite et utilisation de bois generalement classes comme debris ligneux

Publications (1)

Publication Number Publication Date
EP1005406A1 true EP1005406A1 (fr) 2000-06-07

Family

ID=8549259

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98925679A Withdrawn EP1005406A1 (fr) 1997-07-15 1998-06-16 Materiau composite et utilisation de bois generalement classes comme debris ligneux

Country Status (4)

Country Link
EP (1) EP1005406A1 (fr)
AU (1) AU7770298A (fr)
FI (1) FI101775B (fr)
WO (1) WO1999003657A1 (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE30636E (en) * 1972-03-24 1981-06-02 Macmillan Bloedel Limited Products of converted lignocellulosic materials
US4241133A (en) * 1979-04-02 1980-12-23 Board Of Control Of Michigan Technological University Structural members of composite wood material and process for making same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9903657A1 *

Also Published As

Publication number Publication date
FI101775B1 (fi) 1998-08-31
FI101775B (fi) 1998-08-31
FI972994A0 (fi) 1997-07-15
AU7770298A (en) 1999-02-10
WO1999003657A1 (fr) 1999-01-28

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