• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to an insulating material which consists exclusively of bark. For this purpose, roughly chopped tree bark is pressed into sheets with a bulk density of less than 400 kg / m3 with the addition of a condensation glue in a hot press. These plates are characterized by low thermal conductivity and also low thermal diffusivity. The novelty of the invention lies in the production of lightweight, pure bark plates for use as insulation. Thus, these panels are particularly well suited to ensure sufficient sound and heat insulation of buildings and to optimize the same heat storage mass of a building.
    公开号:AT512707A1
    申请号:T377/2012
    申请日:2012-03-29
    公开日:2013-10-15
    发明作者:Guenther Dipl Ing Fh Kain；Marius Catalin Ddr Ing Barbu；Alexander Dipl Ing Fh Dr Petutschnig
    申请人:Kain；
    IPC主号:
    专利说明:

    X • ·
    The invention relates to an insulation material from tree bark. In the forestry and wood industry, bark is a waste material in large quantities and can only be used to a limited extent in terms of material quality. For example, tree barks from wood industry processes are used as bark mulch, soil conditioners and heating material, but, except in limited quantities for wood-based panels, hardly any material is used.
    Traditional approaches to board making from bark {e.g. Volz, K.R. (1973): Production and characteristics of spruce, pine and beech bark plates. Holz als Roh- und Werkstoff, 31, pp. 221-229) focused on the production of chipboard, either entirely from bark in the form of fine chips or flour-like particles (eg Gupta, G .; Yan, N., Feng, MW (US Pat. 2011): Barks Board properties made of beetle-infected lodgepole pine (Pinus contorta) barks., Forest Products Journal, 61 (6), pp. 478-488) or admixing them in specified minor proportions to wood particles {eg Xing, C.; Deng, J .; Zhang, S.Y :; Riedl, B .; Cloutier, A. (2006): Impact of bark content on the properties of medium density fibreboard (MDF) in four species grown in eastern Canada. Forest Products Journal, 56 (3), pp. 64-69 or Pedieu, R .; Riedl, B .; Pichette, A. (2009): Properties of mixed particleboards based on white birch (Betula papyrifera) inner bark
    Kain, barbu, petutschnigg particles and reinforced with woodfhres. European Journal of Wood Products, 67, pp. 95-101).
    There is research [e.g. Naundorf, W.; Wollenberg, R .; Schubert, D. (2004): Thickening of bark to granular filling and insulating materials. Wood as raw material and material, 62, p 397-404) which treat the production of bark cores, but not their use as a raw material for plate-shaped insulation materials with low thermal conductivity.
    The present invention describes bark insulation boards, which are bonded to known binders from the wood-based industry, such as urea-formaldehyde resins, melamine-reinforced urea-formaldehyde resins, phenol-formaldehyde resins and isocyanates (pMDI). For this purpose, bark is dried to a moisture content of less than 8% and comminuted into coarse particles (10 mm <particle size <30 mm). After mixing the bark chop with the above-mentioned binders from a mat (single or multilayer) is formed, which is in a multi-day or continuous heated press to a low target density (400 kg / m3) is pressed. Surprisingly, it has been found that the combination of coarser and smaller bark parts with naturally low thermal conductivity, high biological resistance and comparatively low bulk density to a high-quality and homogeneous building material
    Cain, Barbu, Petutschnigg that allows the application as insulation in sheet form. The production of an insulating board exclusively from coarser and smaller bark parts (10 mm <particle size <30 mm) without the addition of other renewable raw materials and materials represents a novelty.
    Thus, plate-shaped compacts were produced with a density of less than 400 kg / m3 and thermal conductivity values less than 0.1 W / (m * K). The thermal diffusivity (thermal conductivity divided by the product of bulk density and specific heat capacity) of the mentioned bark insulation boards with low thermal conductivity is low with less than 1 * 10-6 m 2 / s.
    This opens up an interesting potential for use for the described panels · in the construction industry, where they can ensure adequate thermal insulation of buildings and at the same time have a positive effect on the heat storage mass of the building envelope.
    The discussed product is easily degradable, based on renewable resources and is suitable for optimizing the energetic properties of buildings.
    Cain, Barbu, Petutschnigg 4: 4 *
    Auführungsbeispiel thermal insulation panel from Kieferrindenhackgut:
    Particularly suitable insulation boards were made from 90% by weight pine bark {Pinus sylvestris) with a residual moisture of 6% (fractionation 13 mm <x ^ 30 mm) and 10% by weight urea-formaldehyde resin (Kronocol U200 from AkzoNobel with 65% solid resin content ) incl. 15% hardener (Hardener 2504 from AkzoNobel) without added wax. The above components were gently homogeneously mixed in the specified proportions in a ploughshare mixer and sprinkled into a single-layer mold mat which was pressed in a hot press at 185 ° C and a press time of 12 s / mm plate thickness to a density of 400 kg / m3.
    Cain, Barbu, Petutschnigg
    权利要求:
    Claims (10)
    [1]
    • • • t • ♦ • • • ft • ft ft • »ftft • • * $ •: • 'Λ &gt; 1. A process for the production of flat compacts, characterized in that one uses exclusively bark wood chips with a particle size of 10 mm to 30 mm and typical glues for wood-based panels.
    [2]
    2. A process for the production of flat compacts, characterized in that the tree bark used preferably consists of softwood bark, in particular pine bark (Pinus sylvestris).
    [3]
    3. A process for the production of flat compacts of tree bark hack, characterized in that the condensation adhesive does not exceed 15 wt.%
    [4]
    4. A process for the production of flat compacts of tree bark hack, characterized in that during the hot pressing a density of 400 kg / m3 is not exceeded.
    [5]
    5. Panel-shaped insulating materials from bark bark characterized in that they are prepared according to claims 1 to 4.
    [6]
    6. plate-shaped insulating materials from bark bark characterized in that they do not exceed a plate density of 400 kg / m3. Cain, Barbu, Petutschnigg
    [7]
    7. plate-shaped insulating materials from bark bark characterized in that the thermal conductivity does not exceed 0.1 W / (m * K).
    [8]
    8. plate-shaped insulating materials from bark bark characterized in that their thermal diffusivity (thermal conductivity divided by the product of specific heat capacity and bulk density) is less than 1 * 10 ~ 6 m2 / s.
    [9]
    9. Plate-shaped insulating materials from bark hacking according to claims 1-8, characterized in that they are used for thermal insulation of buildings.
    [10]
    10. Plate-shaped insulating materials from bark hacking according to claims 1-8, characterized in that they are used for sound insulation of buildings. Cain, Barbu, Petutschnigg 5 5

    (Patent) Claims 1. A process for the production of plate-shaped compacts, characterized in that one uses only tree chips used with a particle size of 10 mm to 40 mm (50 to 20,000 mm3) and Mino- and phenoplastics or thermoplastic adhesives for bonding .. 2. A process for the production of plate-shaped compacts, characterized in that the tree bark used preferably from softwood bark, in particular made of pine bark (Pinus sylvestris). 3. A process for the production of plate-shaped compacts from bark hack, characterized in that the condensation glue does not exceed 15 wt.%. 4. A process for the production of plate-shaped compacts of tree bark hack, characterized in that during the hot pressing a density of 350 kg / m3 · is not exceeded. 5. Procedure for. Production of plate-shaped compacts from bark bark material, characterized in that a heating press is used to cure the adhesive or the compact is also cold-pressed. Kain, Barbu, "P.etnts ^ hni gg 1 FOLLOWING 6 6 • * · ** «« · * * * * · · • · »#« ·· · Z i m * · · · _ . Φ «« # ·· # ··· &gt; · * · · * ♦ * ·· · * 6. Insulating boards. Tree bark chippings, characterized in that they are produced according to claims 1 to 5. 7. Panel-shaped insulating materials from bark bark material for thermal insulation, characterized in that they are produced according to claims 1-5 and their thermal conductivity 0.07. W / (m * K). 8. Panel-shaped insulating materials from bark bark material for thermal insulation, characterized in that they are produced according to claims 1-5 · and their Temperatur.leitfähigkeit (thermal conductivity divided by the product of specific heat capacity and bulk density) is less than 1 * 10 ~ 6 m2 / s .: Cain, Barbu, Ee.t11 * - ^^ ^ gg- | REPLACED |
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    同族专利:
    公开号 | 公开日
    AT512707B1|2014-07-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE2850458A1|1977-11-24|1979-07-05|Tor Axel Ingvar Ottenholm|COMPONENT, E.G. INSULATING ELEMENT, FLOOR ELEMENT OR DGL.|
    DE4316901A1|1992-06-01|1993-12-02|Baehre & Greten|Insulation material prodn. - by compacting mixt. of water glass and loose organic and/or inorganic particles followed by carbon di:oxide hardening|
    DE9310951U1|1993-07-17|1993-09-23|Schaefer Konrad|MOLDED BODY, IN PARTICULAR CHIPBOARD|WO2018119537A1|2016-12-30|2018-07-05|Universidad De Concepcion|Method for obtaining a fibrous material from bark that can be used to produce insulating materials|
    AT15981U1|2017-09-25|2018-10-15|Dipl Ing Dr Guenther Kain|Decorative bark pressed bodies|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA377/2012A|AT512707B1|2012-03-29|2012-03-29|Insulating boards made of tree bark|ATA377/2012A| AT512707B1|2012-03-29|2012-03-29|Insulating boards made of tree bark|
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