EP1582646A1 - Insulation panel made of a mixture of wood and fibre binder and a method of manufacture of the panel - Google Patents

Insulation panel made of a mixture of wood and fibre binder and a method of manufacture of the panel Download PDF

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Publication number
EP1582646A1
EP1582646A1 EP05004545A EP05004545A EP1582646A1 EP 1582646 A1 EP1582646 A1 EP 1582646A1 EP 05004545 A EP05004545 A EP 05004545A EP 05004545 A EP05004545 A EP 05004545A EP 1582646 A1 EP1582646 A1 EP 1582646A1
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Prior art keywords
additive
wood
insulation board
core
binder
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EP05004545A
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German (de)
French (fr)
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EP1582646B2 (en
EP1582646B1 (en
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Kronotec AG
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Kronotec AG
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    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/78—Heat insulating elements
    • E04B1/80—Heat insulating elements slab-shaped
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B2001/742—Use of special materials; Materials having special structures or shape
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2991—Coated
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2991—Coated
    • Y10T428/2998—Coated including synthetic resin or polymer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/3188—Next to cellulosic
    • Y10T428/31895—Paper or wood
    • Y10T428/31906—Ester, halide or nitrile of addition polymer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31971—Of carbohydrate
    • Y10T428/31989—Of wood

Definitions

  • the invention relates to an insulation panel made of a wood-material-binder fiber mixture, a method for producing an insulating panel as well an additive for improving the compressive stiffness and microstructural improvement of Insulation boards made of a wood-material-binder fiber mixture,
  • insulating materials from fibers such as wood, flax, hemp, or wool fibers or the like, optionally with the addition of thermoplastic binder fibers, is known.
  • the production of these insulation materials and nonwovens takes place in a dry process for example, with aerodynamic Fleischlegungmaschine with spatial Alignment of the fiber-binder fiber matrix in a fibrous material fanning and distributing drum and then thermally solidifying the fiber-binder fiber matrix in a hot air flow dryer. This is For example, described in DE 100 56 829 A1.
  • insulation boards In the case of wood fiber insulating materials, the production of insulation boards can also be done by wet processes followed by a subsequent hot-pressing process,
  • binder fibers which are usually made of a polyester or a polypropylene core with thicknesses of 2.2 to 4.4 Detex and are added at a level of up to 25 weight percent. Since the cost of these binder fibers are relatively high compared to wood fibers, such insulation materials are relatively expensive. Furthermore, the addition of binder fibers has only a limited effect on improving the compressive stiffness.
  • An optimum density for a wood fiber board as a plaster base plate is about 100 kg / m 3 . Higher densities have a negative effect on the thermal conductivity of the insulation board in such a way that the required thermal conductivity group WLG 040 is not reached, on the other hand increased stability is achieved.
  • Object of the present invention is an insulation board, an additive for a To provide insulation board and a method for producing an insulation board, with the pressure rigidity and structural strength of insulation boards Wood materials, especially wood fibers, with low densities cost can be increased.
  • this object is achieved by an insulating panel made of a wood-material-binder fiber mixture dissolved, in which the mixture is an additive from a thermally resistant core is added, the core with a thermal activatable coating is provided.
  • the core consists of perlite or a thermoset material, what Due to the hydrophobic properties of the additive an improvement of the Has moisture resistance of the insulation board according to. This results from a according to the addition of the additive reduced mass of hydrophilic wood materials, especially wood fibers.
  • the core as a granule or as a fiber material is designed to work with as many wood-based components or wood fibers and binder fibers come into contact.
  • dry Wood fiber-binder fiber mixture a fine-grained granules or fine-grained particles made of bituminised perlite, from different thermoplastic groups, thermoplastic coated thermoset or comparable particles with a thermal resistant core and a thermally activated or thermoplastic Coat added.
  • the particle sizes of the additive are between 0.3 and 2.5 mm.
  • the proportion of the additive is based on the total mass of the wood-base binder fiber mixture at least 20%, but can also be 40% or more.
  • the additive is homogeneous within the wood material-binder fiber mixture distributed to a uniform pressure and structural strength to ensure the insulation board.
  • the insulation board preferably has a bulk density of more than 20 kg / m 3 , but may also have a bulk density of over 100 kg / m 2 , on the one hand to have optimum strength and on the other hand, optimum thermal conductivity, so that when used as a stable plaster base a good insulation is guaranteed.
  • the additive according to the invention for improving the compressive rigidity and structural improvement of insulation boards of a wood-material-biridemite fiber mixture sees a thermally resistant core and a thermally activated one Coating before, so that by energy supply both the wood materials as well the binder fibers can be combined with the additive.
  • the heat supply takes place for example by a H 1:2.99, a hot steam flow or RF heating.
  • Other heating options are also provided, for example by heated press plates.
  • the thermally activatable coating is preferably a thermoplastic or bitumen, Other thermally activatable coatings can also be used on one appropriate core be arranged to a cross-linking of the wood materials and To effect binder fibers with the additive.
  • the coating can completely encase the core, alternatively it is only partial Coating the surface of the core provided.
  • the core consists of a granulate, for example Perlite or another mineral raw material or a fiber, alternatively to a mineral Material of the core can also consist of a thermosetting plastic. It is the same possible to use a thermoplastic in coordination with the process control, the remains dimensionally stable at the existing temperatures.
  • the additive may be a mixed plastic, in addition to thermosetting also has thermoplastic components.
  • mixed plastics are for example Products of the Dual System (DS) with average shares of 50 to 70% polyolefins, 15 to 20% polystyrenes, 5 to 15% PET and 1 to 5% other packaging plastics.
  • DS Dual System
  • Such mixed plastics are used in dry processing produced, in particular mixed plastics from the Domestic waste can be used.
  • the starting material is in a crushing stage First crushed, magnetic substances are made from the shredded material removed and the crushed material is thermally agglomerated or under pressure compacted, ie pragmatically agglomerated. During the agglomeration process can Volatiles, water vapor, ash and paper aspirated by suction become.
  • thermoplastic Plastic components e.g. Polyethylene (LDPE, HDPE) and duroplastic plastic components, e.g. Polyester or polyurethane, to a granular material connected.
  • LDPE Polyethylene
  • HDPE high density polyethylene
  • duroplastic plastic components e.g. Polyester or polyurethane
  • This is a thermoset core of, for example, polyurethane wholly or partly of a thermally activated, thermoplastic shell
  • polyethylene surrounded or melting at high temperatures thermoplastic core is melting from a low temperature Shell surrounded.
  • Such agglomerated mixed plastics have a sufficiently high proportion of thermal activatable (thermoplastic) shares and thermosetting constituents and are therefore particularly well suited as an additive for improving the Compressive rigidity and structural improvement and / or as a binder for an insulating panel, because the thermoplastic shell of the additive by a sufficient temperature supply For example, thermally activated during a hot pressing process is.
  • thermally activated during a hot pressing process is.
  • such agglomerated mixed plastics can be added Insulation productions to wood-based fibers and known binder fibers Add because the agglomerated mixed plastics thermally activated components which are used to produce insulating panels under pressure and temperature be activated, the thermoset cores or the thermoplastic Cores remain stable.
  • the pressing temperature should be set so that they always is less than the melting temperature or the decomposition temperature of the nuclear materials
  • agglomerated mixed plastic for the production of Dämpfstoffplatten can be improved pressure stiffness and transverse tensile strength values of the plates, without the proportion of expensive binder fibers (with polypropylene core and polyethylene sheath).
  • the increase in Strength properties exclusively by adding cheaper, agglomerated Mixed plastics possible, which originate from the dual system.
  • the additive is hydrophobic to improve moisture resistance.
  • the method for producing an insulation board with a wood-material-binder fiber mixture provides that the mixture is an additive with a thermally stable core and a thermally activatable coating is added.
  • the thermally activatable coating is activated with the addition of heat, so that the wood material-binder fiber mixture and the additive are crosslinked with each other.
  • an insulation board is provided which is located in the optimum density range of about 100 kg / m 3 and thereby has sufficient compressive strength and transverse tensile strength while moisture resistance.
  • the coating of the core is activated in a hot air stream, alternative Activation methods, for example by heated rollers, HF heating or Infrared heaters are also possible.
  • a uniform formation of the structure of the insulation board is done by a homogeneous distribution of the additive within the wood material-binder fiber mixture.
  • the figure shows the embedding of an additive in a wood fiber binder fiber matrix.
  • wood fibers 1 and binder fibers 2 are shown, which homogeneously mixed in a first aerodynamic web forming machine become.
  • wood fibers 1 other wood materials, for example Hvlzs Georgne or the like, are used, for example, alternative Raw materials such as hemp, wool, flax or other renewable raw materials.
  • a compensating additive which consists of a Core 4 with a thermally activated coating 3 consists.
  • This coating 3 can either complete the core 4 be surrounded or arranged only partially on the surface.
  • the additive 3, 4 is the dry mixture of wood fibers 1 and binder fibers 2 as a fine-grained granules or as particles of corresponding materials, such as bituminized perlites, coated thermoplastic groups or thermoplastic encased Duroplast phenomenon added.
  • the particle sizes of the additive 3, 4 should be 0.3 - 2.5 mm, preferably 0.5 - 2 mm for this purpose.
  • To increase the pressure or structural strength of the proportion of the additive to the Total mass of the insulation board amount to at least 20%, but are also values over 40% possible.
  • the admixture of the additive 3, 4 and the spatial orientation of the fiber matrix takes place after mixing of the wood fibers 1 and binder fibers 2 in one separate second aerodynamic web forming machine.
  • the proportion of binder fibers 2 to 10% of the total weight be lowered.
  • the particles of the additive 3, 4 are homogeneous within the matrix of Wood and binder fibers 1, 2 distributed.
  • the activation takes place advantageously in a H 1:2 Kunststoff Kunststoffner, so that by the supplied heat of the thermoplastic shell 3 of the core 4 of the additive particles additional contact points form to the wood fibers 1 and to the binder fibers 2.
  • This will be a pressure-resistant fiber-binder additive matrix provided with improved structural strength.
  • the tempered with the additive 3, 4 insulating materials can be used as thermal insulation in Outdoor area, z. B. for thermal insulation systems and as impact sound insulation in the floor area, z. B. be used under laminate or engineered parquet floors.
  • Total bulk density 10,056 g / m 2 proportion of the additive from different thermoplastic groups 3,394 g / m 2 (proportion 60% based on atro wood fibers), proportion of binder fiber 1,006 g / m 2 (10%), proportion of wood fibers 5,656 g / m 2 , Mixing and laying of the fiber fleece in the drum, activation of the thermoplastic components in the hot air through-air dryer at 170 ° C.
  • Insulation board for impact sound insulation target density 135 kg / m 3 and a thickness of 6 mm with the addition of the additive:
  • Nonwoven fabric in the drum activation of the thermoplastic components in the hot air flow dryer at 170 ° C.

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

Abstract

An additive (3,4) has a thermally-resistant core and a thermally-activatable coating added to a mixture. The thermally-resistant core in the form of granulate or fiber material is made of perlite or thermosetting plastic material. The additive has a grain size of 0.3-2.5 millimeters. Independent claims are also included for the following: (A) an additive; and (B) an insulation material board manufacture.

Description

Die Erfindung betrifft eine Dämmstoffplatte aus einem Holzwerkstoff-Bindemittelfaser-Gemisch, ein Verfahren zur Herstellung einer Dämmstoffplatte sowie ein Additiv zur Verbesserung der Drucksteifigkeit und Gefügeverbesserung von Dämmstoffplatten aus einem Holzwerkstoff-Bindemittelfaser-Gemisch,The invention relates to an insulation panel made of a wood-material-binder fiber mixture, a method for producing an insulating panel as well an additive for improving the compressive stiffness and microstructural improvement of Insulation boards made of a wood-material-binder fiber mixture,

Die Herstellung von Dämmstoffen aus Fasern, beispielsweise Holz-, Flachs-, Hanf-, oder Wollfasern oder dergleichen, ggf. unter Zugabe thermoplastischer Bindemittelfasern, ist bekannt. Die Herstellung dieser Dämmstoffe und Vliese erfolgt im Trockenverfahren beispielsweise mit aerodynamischen Vlieslegungsverfahren mit räumlicher Ausrichtung der Faser-Bindemittelfasermatrix in einer das Fasergut auflockernden und verteilenden Trommel und anschließender thermischer Verfestigung der Faser-Bindemittelfasermatrix in einem Heißluftdurchströmungstrockner. Dies ist beispielsweise in der DE 100 56 829 A1 beschrieben.The production of insulating materials from fibers, such as wood, flax, hemp, or wool fibers or the like, optionally with the addition of thermoplastic binder fibers, is known. The production of these insulation materials and nonwovens takes place in a dry process for example, with aerodynamic Fleischlegungverfahren with spatial Alignment of the fiber-binder fiber matrix in a fibrous material fanning and distributing drum and then thermally solidifying the fiber-binder fiber matrix in a hot air flow dryer. This is For example, described in DE 100 56 829 A1.

Bei Holzfaserdämmstoffen kann die Herstellung der Dämmstoffplatten auch im Nassverfahren mit einem anschließenden Warmpressverfahren erfolgen, In the case of wood fiber insulating materials, the production of insulation boards can also be done by wet processes followed by a subsequent hot-pressing process,

Bei den bisherigen Verfahren zur Herstellung von Dämmstoffen aus natürlichen und synthetischen Fasern besteht häufig noch eine unzureichende räumliche Ausrichtung der Holz- und Bindemittelfasern, Aufgrund der überwiegend parallelen Ausrichtung der Fasern sind diese Dämmstoffplatten senkrecht zu den Oberflächen der Platten trotz der thermischen Verfestigung im Heißluftdurchströmungstrockner leicht spaltbar. Außerdem ist die Drucksteifigkeit dieser Dämmstoffplatten aufgrund der geringen Rohdichte relativ gering.In the previous process for the production of insulating materials from natural and Synthetic fibers often still lack sufficient spatial orientation the wood and binder fibers, due to the predominantly parallel orientation Of the fibers, these insulation panels are perpendicular to the surfaces of the panels despite the thermal solidification in the hot air flow dryer easily split. In addition, the compressive rigidity of these insulation boards due to the low Density relatively low.

Dies hat zur Folge, dass der Einsatz solcher Platten als Dämmstoff und Putzträger, insbesondere im Außenbereich, problematisch ist, da wenig drucksteife und wenig querzugfeste Dämmstoffe mit speziellen Befestigungsmitteln am Untergrund befestigt werden müssen. Außerdem wirkt sich eine zu geringe Drucksteifigkeit negativ auf die Schlagstoßfestigkeit des Wärmedämmverbundsystems aus.This has the consequence that the use of such plates as insulation and plaster base, especially in outdoor areas, is problematic, since little pressure stiffness and little insulation-resistant insulating materials fastened to the substrate with special fastening means Need to become. In addition, too low a compressive stiffness has a negative effect the impact resistance of the thermal insulation composite system.

Zur Erreichung einer ausreichenden Gefügefestigkeit der Dämmstoffplatte werden Bindemittelfasern eingesetzt, die in der Regel aus einem Polyester oder einem Polypropylenkern mit Dicken von 2,2 bis 4,4 Detex bestehen und mit einem Anteil von bis zu 25 Gewichtsprozent zugesetzt werden. Da die Kosten für diese Bindemittelfasern im Vergleich zu Holzfasern relativ hoch sind, sind solche Dämmstoffe vergleichsweise teuer. Weiterhin wirkt sich der Zusatz von Bindemittelfasern nur bedingt verbessernd auf die Erhöhung der Drucksteifigkeit aus. Eine optimale Rohdichte für eine Holzfaserplatte als Putzträgerplatte liegt bei ca. 100 kg/m3. Höhere Rohdichten wirken sich negativ auf die Wärmeleitfähigkeit der Dämmplatte dergestalt aus, dass die erforderliche Wärmeleitfähigkeitsgruppe WLG 040 nicht erreicht wird, andererseits wird eine erhöhte Stabilität erreicht.To achieve a sufficient structural strength of the insulation board binder fibers are used, which are usually made of a polyester or a polypropylene core with thicknesses of 2.2 to 4.4 Detex and are added at a level of up to 25 weight percent. Since the cost of these binder fibers are relatively high compared to wood fibers, such insulation materials are relatively expensive. Furthermore, the addition of binder fibers has only a limited effect on improving the compressive stiffness. An optimum density for a wood fiber board as a plaster base plate is about 100 kg / m 3 . Higher densities have a negative effect on the thermal conductivity of the insulation board in such a way that the required thermal conductivity group WLG 040 is not reached, on the other hand increased stability is achieved.

Aufgabe der vorliegenden Erfindung ist es, eine Dämmstoffplatte, ein Additiv für eine Dämmstoffplatte sowie ein Verfahren zur Herstellung einer Dämmstoffplatte bereitzustellen, mit dem die Drucksteifigkeit und Gefügefestigkeit von Dämmstoffplatten aus Holzwerkstoffen, insbesondere Holzfasern, mit geringen Rohdichten kostengünstig erhöht werden kann. Object of the present invention is an insulation board, an additive for a To provide insulation board and a method for producing an insulation board, with the pressure rigidity and structural strength of insulation boards Wood materials, especially wood fibers, with low densities cost can be increased.

Erfindungsgemäß wird diese Aufgabe durch eine Dämmstoffplatte aus einem Holzwerkstoff-Bindemittelfaser-Gemisch gelöst, bei der dem Gemisch ein Additiv aus einem thermisch beständigen Kern zugegeben wird, wobei der Kern mit einer thermisch aktivierbaren Beschichtung versehen ist.According to the invention, this object is achieved by an insulating panel made of a wood-material-binder fiber mixture dissolved, in which the mixture is an additive from a thermally resistant core is added, the core with a thermal activatable coating is provided.

Vorteilhafter Weise besteht der Kern aus Perlite oder einem Duroplastwerkstoff, was aufgrund der hydrophoben Eigenschaften des Additivs eine Verbesserung der Feuchtebeständigkeit der Dämmstoffplatte zufolge hat. Dies ergibt sich aus einer entsprechend der Zugabe des Additivs verringerten Masse an hydrophilen Holzwerkstoffen, insbesondere Holzfasern.Advantageously, the core consists of perlite or a thermoset material, what Due to the hydrophobic properties of the additive an improvement of the Has moisture resistance of the insulation board according to. This results from a according to the addition of the additive reduced mass of hydrophilic wood materials, especially wood fibers.

Darüber hinaus ist vorgesehen, dass der Kern als ein Granulat oder als Faserwerkstoff ausgebildet ist, um mit möglichst vielen Holzwerkstoff-Komponenten oder Holzfasern sowie Bindemittelfasern in Kontakt zu treten.In addition, it is envisaged that the core as a granule or as a fiber material is designed to work with as many wood-based components or wood fibers and binder fibers come into contact.

Zur Steigerung der Druckfestigkeit und Querzugsfestigkeit werden dem trockenen Holzfaser-Bindemittelfasergemisch ein feinkörniges Granulat oder feinkörnige Partikel aus bituminiertem Perlite, aus verschiedenen Thermoplastgruppen, thermoplastisch ummantelten Duroplastgruppen oder vergleichbaren Partikeln mit einem thermisch beständigen Kern und einem thermisch aktivierbaren oder thermoplastischen Mantel zugegeben. Die Korngrößen des Additivs betragen dabei zwischen 0,3 und 2,5 mm.To increase the compressive strength and transverse tensile strength are dry Wood fiber-binder fiber mixture a fine-grained granules or fine-grained particles made of bituminised perlite, from different thermoplastic groups, thermoplastic coated thermoset or comparable particles with a thermal resistant core and a thermally activated or thermoplastic Coat added. The particle sizes of the additive are between 0.3 and 2.5 mm.

Zur Steigerung der Druck- und Gefügefestigkeit beträgt der Anteil des Additivs bezogen auf die Gesamtmasse des Holzwerkstoffes-Bindemittelfasergemisches mindestens 20 %, kann aber auch 40 % oder mehr betragen.To increase the pressure and structural strength, the proportion of the additive is based on the total mass of the wood-base binder fiber mixture at least 20%, but can also be 40% or more.

Vorteilhafter Weise ist das Additiv homogen innerhalb des Holzwerkstoff-Bindemittelfasergemisches verteilt, um eine gleichmäßige Druck- und Gefügefestigkeit der Dämmstoffplatte zu gewährleisten. Advantageously, the additive is homogeneous within the wood material-binder fiber mixture distributed to a uniform pressure and structural strength to ensure the insulation board.

Im Gegensatz zu den hydrophilen Holzwerkstoffen ist es vorgesehen, dass das Additiv hydrophob ist, damit zusätzlich zu der verbesserten Drucksteifigkeit eine höhere Feuchtebeständigkeit der Dämmstoffplatte erzielt wird.In contrast to the hydrophilic wood-based materials, it is intended that the additive hydrophobic, so that in addition to the improved compressive rigidity a higher Moisture resistance of the insulation board is achieved.

Die Dämmstoffplatte hat vorzugsweise eine Rohdichte von mehr als 20 kg/m3, kann jedoch auch eine Rohdichte von über 100 kg/m2 aufweisen, um einerseits eine optimale Festigkeit und andererseits eine optimale Wärmeleitfähigkeit zu haben, so dass bei Verwendung als stabiler Putzträger eine gute Isolierung gewährleistet ist.The insulation board preferably has a bulk density of more than 20 kg / m 3 , but may also have a bulk density of over 100 kg / m 2 , on the one hand to have optimum strength and on the other hand, optimum thermal conductivity, so that when used as a stable plaster base a good insulation is guaranteed.

Durch den Einsatz des Additivs kann der Anteil der Bindemittelfasern auf ca. 10 Gewichtsprozent, bezogen auf die Gesamtmasse der Dämmstoffplatte, reduziert werden, was die Kosten für die Dämmstoffplatte reduziert.Through the use of the additive, the proportion of binder fibers to about 10 weight percent, based on the total mass of the insulation board, be reduced which reduces the cost of the insulation board.

Das erfindungsgemäße Additiv zur Verbesserung der Drucksteifigkeit und Gefügeverbesserung von Dämmstoffplatten aus einem Holzwerkstoff-Biridemittelfaser-Gemisch sieht einen thermisch beständigen Kern und eine thermisch aktivierbare Beschichtung vor, so dass durch Energiezufuhr sowohl die Holzwerkstoffe als auch die Bindemittelfasern mit dem Additiv verbunden werden können. Die Wärmezufuhr erfolgt beispielsweise durch einen Heißluftdurchströmungstrockner, eine Heißdampfdurchströmung oder eine HF-Erwärmung. Andere Erwärmungsmöglichkeiten sind ebenfalls vorgesehen, beispielsweise durch beheizte Pressplatten.The additive according to the invention for improving the compressive rigidity and structural improvement of insulation boards of a wood-material-biridemite fiber mixture sees a thermally resistant core and a thermally activated one Coating before, so that by energy supply both the wood materials as well the binder fibers can be combined with the additive. The heat supply takes place for example by a Heißluftdurchströmungstrockner, a hot steam flow or RF heating. Other heating options are also provided, for example by heated press plates.

Die thermisch aktivierbare Beschichtung ist vorzugsweise ein Thermoplast oder Bitumen, andere thermisch aktivierbare Beschichtungen können ebenfalls auf einem entsprechenden Kern angeordnet sein, um eine Vernetzung der Holzwerkstoffe und Bindemittelfasern mit dem Additiv zu bewirken.The thermally activatable coating is preferably a thermoplastic or bitumen, Other thermally activatable coatings can also be used on one appropriate core be arranged to a cross-linking of the wood materials and To effect binder fibers with the additive.

Die Beschichtung kann den Kern vollständig umschließen, alternativ ist nur eine teilweise Beschichtung der Oberfläche des Kernes vorgesehen.The coating can completely encase the core, alternatively it is only partial Coating the surface of the core provided.

Der Kern besteht aus einem Granulat, beispielsweise aus Perlite oder einem anderen mineralischen Grundstoff oder einer Faser, wobei alternativ zu einem mineralischen Werkstoff der Kern auch aus einem Duroplast bestehen kann. Ebenfalls ist es möglich, in Abstimmung mit der Prozessführung einen Thermoplast einzusetzen, der bei den vorhandenen Temperaturen formbeständig bleibt.The core consists of a granulate, for example Perlite or another mineral raw material or a fiber, alternatively to a mineral Material of the core can also consist of a thermosetting plastic. It is the same possible to use a thermoplastic in coordination with the process control, the remains dimensionally stable at the existing temperatures.

Vorteilhafterweise kann das Additiv ein Mischkunststoff sein, der neben duroplastischen auch thermoplastische Anteile aufweist. Derartige Mischkunststoffe sind beispielsweise Produkte des Dualen Systems (DS) mit durchschnittlichen Anteilen von 50 bis 70% Polyolefinen, 15 bis 20% Polystyrolen, 5 bis 15% PET und 1 bis 5% sonstigen Verpackungskunststoffen. Solche Mischkunststoffe werden in Trockenaufbereitungsverfahren hergestellt, wobei insbesondere gemischte Kunststoffe aus dem Hausmüll verwendet werden. Das Ausgangsmaterial wird in einer Zerkleinerungsstufe zunächst zerkleinert, magnetische Stoffe werden aus dem zerkleinerten Material entfernt und das zerkleinerte Material wird thermisch agglomeriert oder unter Druck kompaktiert, also prossagglomeriert. Während des Agglomeriervorgangs können flüchtige Stoffe, Wasserdampf, Asche und Papier durch Absaugvorrichtungen abgesaugt werden.Advantageously, the additive may be a mixed plastic, in addition to thermosetting also has thermoplastic components. Such mixed plastics are for example Products of the Dual System (DS) with average shares of 50 to 70% polyolefins, 15 to 20% polystyrenes, 5 to 15% PET and 1 to 5% other packaging plastics. Such mixed plastics are used in dry processing produced, in particular mixed plastics from the Domestic waste can be used. The starting material is in a crushing stage First crushed, magnetic substances are made from the shredded material removed and the crushed material is thermally agglomerated or under pressure compacted, ie pragmatically agglomerated. During the agglomeration process can Volatiles, water vapor, ash and paper aspirated by suction become.

Das agglomerierte Material wird anschließend auf eine gewünschte Restfeuchte getrocknet und gesiebt. Durch den Agglomeratorprozess werden thermoplastische Kunststoffbestandteile, z.B. Polyethylen (LDPE, HDPE) und duroplastische Kunststoffbestandteile, z.B. Polyester oder Polyurethane, zu einem granulatartigen Material verbunden. Hierbei wird ein duroplastischer Kern aus beispielsweise Polyurethan ganz oder teilweise von einer thermisch aktivierbaren, thermoplastischen Hülle aus beispielsweise Polyethylen umgeben oder ein bei hohen Temperaturen schmelzender thermoplastischer Kern wird von einer bei niedrigen Temperaturen schmelzenden Hülle umgeben.The agglomerated material is then dried to a desired residual moisture and sieved. The agglomerating process turns into thermoplastic Plastic components, e.g. Polyethylene (LDPE, HDPE) and duroplastic plastic components, e.g. Polyester or polyurethane, to a granular material connected. This is a thermoset core of, for example, polyurethane wholly or partly of a thermally activated, thermoplastic shell For example, polyethylene surrounded or melting at high temperatures thermoplastic core is melting from a low temperature Shell surrounded.

Derart agglomerierte Mischkunststoffe weisen einen ausreichend hohen Anteil thermisch aktivierbarer (thermoplastischer) Anteile und duroplastischer Bestandteile auf und eignen sich aus diesem Grund besonders gut als Additiv zur Verbesserung der Drucksteifigkeit und Gefügeverbesserung und/oder als Bindemittel für eine Dämmstoffplatte, da die thermoplastische Hülle des Additivs durch eine ausreichende Temperaturzuführung beispielsweise bei einem Heißpressvorgang thermisch aktivierbar ist. Vorteilhafterweise lassen sich solcherart agglomerierte Mischkunststoffe bei Dämmstoffproduktionen zu Holzwerkstofffasern und bekannten Bindemittelfasern hinzugeben, da die agglomerierten Mischkunststoffe thermisch aktivierbare Bestandteile aufweisen, die zur Herstellung von Dämmstoffplatten unter Druck und Temperatur aktiviert werden, wobei die duroplastischen Kerne oder die thermoplastischen Kerne stabil bleiben. Dazu ist die Presstemperatur so einzustellen, dass sie immer kleiner ist als die Schmelztemperatur bzw. die Zersetzungstemperatur der KernmaterialienSuch agglomerated mixed plastics have a sufficiently high proportion of thermal activatable (thermoplastic) shares and thermosetting constituents and are therefore particularly well suited as an additive for improving the Compressive rigidity and structural improvement and / or as a binder for an insulating panel, because the thermoplastic shell of the additive by a sufficient temperature supply For example, thermally activated during a hot pressing process is. Advantageously, such agglomerated mixed plastics can be added Insulation productions to wood-based fibers and known binder fibers Add because the agglomerated mixed plastics thermally activated components which are used to produce insulating panels under pressure and temperature be activated, the thermoset cores or the thermoplastic Cores remain stable. For this, the pressing temperature should be set so that they always is less than the melting temperature or the decomposition temperature of the nuclear materials

Durch die Zugabe von agglomerierten Mischkunststoff zur Produktion der Dämpfstoffplatten lassen sich verbesserte Drucksteifigkeits- und Querzugsfestigkeitswerte der Platten erzielen, ohne den Anteil teurer Bindemittelfasern (mit Polypropylenkern und Polyethylenhülle) erhöhen zu müssen. Vorteilhafterweise ist die Erhöhung der Festigkeitseigenschaften ausschließlich durch Beigabe kostengünstiger, agglomerierter Mischkunststoffe möglich, die dem Dualen System entstammen.Through the addition of agglomerated mixed plastic for the production of Dämpfstoffplatten can be improved pressure stiffness and transverse tensile strength values of the plates, without the proportion of expensive binder fibers (with polypropylene core and polyethylene sheath). Advantageously, the increase in Strength properties exclusively by adding cheaper, agglomerated Mixed plastics possible, which originate from the dual system.

Das Additiv ist hydrophob, um die Feuchtebeständigkeit zu verbessern.The additive is hydrophobic to improve moisture resistance.

Das Verfahren zur Herstellung einer Dämmstoffplatte mit einem Holzwerkstoff-Bindemittelfasergemisch sieht vor, dass dem Gemisch ein Additiv mit einem thermisch beständigen Kern und einer thermisch aktivierbaren Beschichtung zugegeben wird. Die thermisch aktivierbare Beschichtung wird unter Wärmezufuhr aktiviert, so dass das Holzwerkstoff-Bindemittelfaser-Gemisch und das Additiv miteinander vernetzt werden. Dadurch wird eine Dämmstoffplatte bereitgestellt, die im optimalen Rohdichtebereich von ungefähr 100 kg/m3 angesiedelt ist und dabei eine ausreichende Druckfestigkeit und Querzugfestigkeit bei gleichzeitiger Feuchtebeständigkeit aufweist.The method for producing an insulation board with a wood-material-binder fiber mixture provides that the mixture is an additive with a thermally stable core and a thermally activatable coating is added. The thermally activatable coating is activated with the addition of heat, so that the wood material-binder fiber mixture and the additive are crosslinked with each other. As a result, an insulation board is provided which is located in the optimum density range of about 100 kg / m 3 and thereby has sufficient compressive strength and transverse tensile strength while moisture resistance.

Die Beschichtung des Kernes wird dabei in einem Heißluftstrom aktiviert, alternative Aktivierungsmethoden, beispielsweise durch beheizte Walzen, HF-Erwärmung oder Infrarotstrahler sind ebenfalls möglich. The coating of the core is activated in a hot air stream, alternative Activation methods, for example by heated rollers, HF heating or Infrared heaters are also possible.

Zur gleichmäßigen Durchmischung der Holzwerkstoffe und der Bindemittelfasern werden diese in einer aerodynamischen Vliesbildungsmaschine gemischt, anschließend wird das Additiv in einer separaten Vliesbildungsmaschine zugemischt. Dabei wird auch die räumliche Ausrichtung der Fasermatrix vorgenommen, wobei dies in einer gesonderten aerodynamischen Vliesbildungsmaschine erfolgt.For uniform mixing of the wood materials and the binder fibers These are mixed in an aerodynamic web-forming machine, then the additive is mixed in a separate web-forming machine. there the spatial orientation of the fiber matrix is also made, this being in a separate aerodynamic web forming machine.

Eine gleichmäßige Ausbildung der Struktur der Dämmstoffplatte erfolgt durch eine homogene Verteilung des Additivs innerhalb des Holzwerkstoff-Bindemittelfasergemisches. A uniform formation of the structure of the insulation board is done by a homogeneous distribution of the additive within the wood material-binder fiber mixture.

Nachfolgend wird anhand der einzigen Figur die Erfindung näher erläutert.The invention will be explained in more detail with reference to the single figure.

Die Figur zeigt die Einbettung eines Additivs in eine Holzfaser-Bindemittelfasermatrix.The figure shows the embedding of an additive in a wood fiber binder fiber matrix.

In der Figur ist eine Mischung aus Holzfasern 1 und Bindemittelfasern 2 dargestellt, die in einer ersten aerodynamischen Vliesbildungsmaschine homogen vermischt werden. Alternativ zu Holzfasern 1 können andere Holzwerkstoffe, beispielsweise Hvlzspäne oder dergleichen, eingesetzt werden, beispielsweise auch alternative Rohstoffe wie Hanf, Wolle, Flachs oder andere nachwachsende Rohstoffe.In the figure, a mixture of wood fibers 1 and binder fibers 2 is shown, which homogeneously mixed in a first aerodynamic web forming machine become. As an alternative to wood fibers 1, other wood materials, for example Hvlzspäne or the like, are used, for example, alternative Raw materials such as hemp, wool, flax or other renewable raw materials.

Anschließend erfolgt eine Zumischung eines vergütenden Additivs, das aus einem Kern 4 mit einer thermisch aktivierbaren Beschichtung 3 besteht. Diese thermisch aktivierbare Beschichtung 3 kann beispielsweise aus Bitumen oder einem thermoplastischen Material bestehen. Diese Beschichtung 3 kann den Kern 4 entweder vollständig umgeben oder nur teilweise an dessen Oberfläche angeordnet sein.Subsequently, an admixture of a compensating additive, which consists of a Core 4 with a thermally activated coating 3 consists. This thermally can be activated coating 3, for example, bitumen or a thermoplastic Material exist. This coating 3 can either complete the core 4 be surrounded or arranged only partially on the surface.

Das Additiv 3, 4 wird dem trockenen Gemisch aus Holzfasern 1 und Bindemittelfasern 2 als ein feinkörniges Granulat oder als Partikel aus entsprechenden Materialien, wie bituminierten Perliten, beschichteten Thermoplastgruppen oder thermoplastisch ummantelten Duroplastgruppen zugegeben. Die Korngrößen des Additivs 3, 4 sollten für diesen Einsatzzweck 0,3 - 2,5 mm, vorzugsweise 0,5 - 2 mm betragen. Zur Steigerung der Druck- bzw. Gefügefestigkeit sollte der Anteil des Additivs an der Gesamtmasse der Dämmplatte mindestens 20 % betragen, jedoch sind auch Werte von über 40 % möglich.The additive 3, 4 is the dry mixture of wood fibers 1 and binder fibers 2 as a fine-grained granules or as particles of corresponding materials, such as bituminized perlites, coated thermoplastic groups or thermoplastic encased Duroplastgruppen added. The particle sizes of the additive 3, 4 should be 0.3 - 2.5 mm, preferably 0.5 - 2 mm for this purpose. To increase the pressure or structural strength of the proportion of the additive to the Total mass of the insulation board amount to at least 20%, but are also values over 40% possible.

Die Zumischung des Additivs 3, 4 und die räumliche Ausrichtung der Fasermatrix erfolgt nach der Durchmischung der Holzfasern 1 und Bindemittelfasern 2 in einer separaten, zweiten aerodynamischen Vliesbildungsmaschine. Durch die Zugabe des Additivs 3, 4 mit der zusätzlichen verbindenden Wirkung der thermisch aktivierbaren Beschichtung 3 kann der Anteil an Bindemittelfasern 2 auf 10 % am Gesamtgewicht gesenkt werden. The admixture of the additive 3, 4 and the spatial orientation of the fiber matrix takes place after mixing of the wood fibers 1 and binder fibers 2 in one separate second aerodynamic web forming machine. By the addition of the Additivs 3, 4 with the additional binding effect of the thermally activated Coating 3, the proportion of binder fibers 2 to 10% of the total weight be lowered.

Mittels des aerodynamischen Vlies- bzw. Faserlegungsverfahrens mit räumlicher Ausrichtung werden die Partikel des Additivs 3, 4 homogen innerhalb der Matrix der Holz- und Bindemittelfasern 1, 2 verteilt. Die Aktivierung erfolgt vorteilhafter Weise in einem Heißluftdurchströmungstrockner, so dass durch die zugeführte Wärme der thermoplastische Mantel 3 des Kerns 4 der Additivpartikel zusätzliche Kontaktstellen zu den Holzfasern 1 und zu den Bindemittelfasern 2 ausbilden. Dadurch wird eine drucksteife Faser-Bindemittel-Additivmatrix mit verbesserter Gefügefestigkeit bereitgestellt.By means of the aerodynamic nonwoven or Faserlegungsverfahrens with spatial Alignment, the particles of the additive 3, 4 are homogeneous within the matrix of Wood and binder fibers 1, 2 distributed. The activation takes place advantageously in a Heißluftdurchströmungstrockner, so that by the supplied heat of the thermoplastic shell 3 of the core 4 of the additive particles additional contact points form to the wood fibers 1 and to the binder fibers 2. This will be a pressure-resistant fiber-binder additive matrix provided with improved structural strength.

Die mit dem Additiv 3, 4 vergüteten Dämmstoffe können als Wärmedämmstoff im Außenbereich, z. B. für Wärmedämmverbundsysteme und als Trittschalldämmstoffe im Fußbodenbereich, z. B. unter Laminat- oder Fertigparkettböden eingesetzt werden.The tempered with the additive 3, 4 insulating materials can be used as thermal insulation in Outdoor area, z. B. for thermal insulation systems and as impact sound insulation in the floor area, z. B. be used under laminate or engineered parquet floors.

Beispiel 1:Example 1:

Wärmedämmstoffplatte zur Wärmedämmung mit einer Zielrohdichte von 100 kg/m3 und einer Dicke von 100 mm unter Zugabe des Additivs:Thermal insulation board for thermal insulation with a target density of 100 kg / m 3 and a thickness of 100 mm with the addition of the additive:

Schüttgewicht insgesamt 10.056 g/m2, Anteil des Additivs aus verschiedenen Thermoplastgruppen 3.394g/m2 (Anteil 60 % bezogen auf atro Holzfasern), Anteil der Bindemittelfaser 1.006 g/m2 (10%), Anteil Holzfasern 5.656 g/m2, Durchmischung und Legung des Faservlieses im Tambour, Aktivierung der thermoplastischen Bestandteile im Heißluftdurchstrdmungstrockner bei 170° C.Total bulk density 10,056 g / m 2 , proportion of the additive from different thermoplastic groups 3,394 g / m 2 (proportion 60% based on atro wood fibers), proportion of binder fiber 1,006 g / m 2 (10%), proportion of wood fibers 5,656 g / m 2 , Mixing and laying of the fiber fleece in the drum, activation of the thermoplastic components in the hot air through-air dryer at 170 ° C.

Beispiel 2:Example 2:

Dämmstoffplatte zur Trittschalldämmung, Zielrohdichte 135 kg/m3 und einer Dicke von 6 mm unter Zugabe des Additivs:Insulation board for impact sound insulation, target density 135 kg / m 3 and a thickness of 6 mm with the addition of the additive:

Schüttgewicht insgesamt 800 g/m2, Anteil Additiv aus verschiedenen Thermoplastgruppen 206 g/m2 (Anteil 40 % bezogen auf atro Holzfasern), Anteil der Bindemittelfaser 80 g/m2 (10 %), Anteil Holzfasern 514 g/m2, Durchmischung und Legung des Bulk weight total 800 g / m 2 , proportion of additive from different thermoplastic groups 206 g / m 2 (proportion 40% based on atro wood fibers), proportion of binder fiber 80 g / m 2 (10%), proportion of wood fibers 514 g / m 2 , mixing and laying of the

Faservlieses im Tambour, Aktivierung der thermoplastischen Bestandteile im Heißluftdurchströmungstrockner bei 170° C.Nonwoven fabric in the drum, activation of the thermoplastic components in the hot air flow dryer at 170 ° C.

Claims (21)

Dämmstoffplatte aus einem Holzwerkstoff-Bindemittelfaser-Gemisch, dadurch gekennzeichnet, dass dem Gemisch ein Additiv (3, 4) mit einem thermisch beständigen Kern (4) mit einer thermisch aktivierbaren Beschichtung (3) zugegeben ist.Insulation board made of a wood-material-binder fiber mixture, characterized in that the mixture is an additive (3, 4) with a thermally stable core (4) with a thermally activatable coating (3) is added. Dämmstoffplatte nach Anspruch 1, dadurch gekennzeichnet, dass der Kern (4) aus Perlite oder Duroplast-Werkstoff ausgebildet ist.Insulation board according to claim 1, characterized in that the core (4) is formed of perlite or thermoset material. Dämmstoffplatte nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Kern (4) als Granulat oder Faserwerkstoff ausgebildet ist.Insulation board according to claim 1 or 2, characterized in that the core (4) is formed as granules or fiber material. Dämmstoffplatte nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass das Additiv (3, 4) eine Korngröße von 0,3 bis 2,5 mm aufweist.Insulation board according to one of the preceding claims, characterized in that the additive (3, 4) has a particle size of 0.3 to 2.5 mm. Dämmstoffplatte nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass der Anteil des Additivs (3, 4) bezogen auf die Gesamt-masse der Dämmstoffplatte mindestens 20% beträgt. Insulation board according to one of the preceding claims, characterized in that the proportion of the additive (3, 4) based on the total mass of the insulation board is at least 20%. Dämmstoffplatte nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass das Additiv (3, 4) homogen innerhalb des Holzwerkstoff Bindemittelfaser-Gemisches verteilt ist.Insulation board according to one of the preceding claims, characterized in that the additive (3, 4) is distributed homogeneously within the wood material binder fiber mixture. Dämmstoffplatte nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass das Additiv (3, 4) hydrophob ist.Insulating board according to one of the preceding claims, characterized in that the additive (3, 4) is hydrophobic. Dämmstoffplatte nach einem der voranstehenden Ansprüche, gekennzeichnet durch eine Rohdichte von mindestens 20 kg/m3.Insulating board according to one of the preceding claims, characterized by a density of at least 20 kg / m 3 . Dämmstoffplatte nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass der Anteil der Bindemittelfasern (2) zwischen 10 und 20 Gewichtsprozent der Gesamtmasse liegt.Insulation board according to one of the preceding claims, characterized in that the proportion of the binder fibers (2) is between 10 and 20 percent by weight of the total mass. Dämmstoffplatte nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass der Holzwerkstoff (1) als Holzfaser ausgebildet ist.Insulation board according to one of the preceding claims, characterized in that the wood material (1) is formed as wood fiber. Additiv zur Verbesserung der Drucksteifigkeit und Gefügeverbesserung von Dämmstoffplatten aus einem Holzwerkstoff-Bindemittelfaser-Gemisch, dadurch gekennzeichnet, dass das Additiv (3, 4) aus einem thermisch beständigen Kern (4) und einer thermisch aktivierbaren Beschichtung (3) besteht.An additive for improving the compressive rigidity and microstructure improvement of insulating panels of a wood-material-binder fiber mixture, characterized in that the additive (3, 4) consists of a thermally stable core (4) and a thermally activatable coating (3). Additiv nach Anspruch 11, dadurch gekennzeichnet, dass die thermisch aktivierbare Beschichtung (3) ein Thermoplast oder Bitumen ist.An additive according to claim 11, characterized in that the thermally activatable coating (3) is a thermoplastic or bitumen. Additiv nach Anspruch 11 oder 12, dadurch gekennzeichnet, dass die Beschichtung (3) den Kern (4) vollständig umschließt.Additive according to claim 11 or 12, characterized in that the coating (3) completely surrounds the core (4). Additiv nach einem der Ansprüche 11 bis 13, dadurch gekennzeichnet, dass der Kern (4) aus einem Granulat oder einer Faser besteht. Additive according to one of claims 11 to 13, characterized in that the core (4) consists of a granulate or a fiber. Additiv nach einem der Ansprüche 11 bis 14, dadurch gekennzeichnet, dass der Kern (4) aus Duroplast-Werkstoffen oder mineralischen Werkstoffen besteht.Additive according to one of claims 11 to 14, characterized in that the core (4) consists of thermosetting materials or mineral materials. Additiv nach einem der Ansprüche 11 bis 15, dadurch gekennzeichnet, dass es hydrophob ist.Additive according to one of claims 11 to 15, characterized in that it is hydrophobic. Verfahren zur Herstellung einer Dämmstoffplatte aus einem Holzwerkstoff-Bindemittelfaser-Gemisch, dadurch gekennzeichnet, dass dem Gemisch ein Additiv (3, 4) mit einem thermisch beständigen Kern (4) mit einer thermisch aktivierbaren Beschichtung (3) zugegeben wird und die thermisch aktivierbare Beschichtung (3) unter Wärmezufuhr aktiviert wird.Method for producing an insulating panel from a wood-material-binder-fiber mixture, characterized in that an additive (3, 4) with a thermally stable core (4) with a thermally activatable coating (3) is added to the mixture and the thermally activatable coating (3) 3) is activated with heat. Verfahren nach Anspruch 17, dadurch gekennzeichnet, dass die Beschichtung (3) in einem Heißluftstrom aktiviert wird.A method according to claim 17, characterized in that the coating (3) is activated in a hot air stream. Verfahren nach Anspruch 17 oder 18, dadurch gekennzeichnet, dass der Holzwerkstoff (1) und die Bindemittelfasern (2) in einer aerodynamischen Vliesbildungsmaschine gemischt werden.A method according to claim 17 or 18, characterized in that the wood material (1) and the binder fibers (2) are mixed in an aerodynamic web-forming machine. Verfahren nach einem der Ansprüche 17 bis 19, dadurch gekennzeichnet, dass die Zumischung des Additivs (3, 4) und die räumliche Ausrichtung der Fasermatrix in einer aerodynamischen Vliesbildungsmaschine, insbesondere in einer separaten Vliesbildungsmaschine erfolgt.Method according to one of claims 17 to 19, characterized in that the admixing of the additive (3, 4) and the spatial orientation of the fiber matrix takes place in an aerodynamic web-forming machine, in particular in a separate web-forming machine. Verfahren nach einem der Ansprüche 17 bis 20, dadurch gekennzeichnet, dass das Additiv (3, 4) homogen innerhalb des Holzwerkstoff-Bindemittelfaser-Gemisches verteilt wird.Method according to one of claims 17 to 20, characterized in that the additive (3, 4) is distributed homogeneously within the wood material-binder fiber mixture.
EP20050004545 2004-03-11 2005-03-02 Insulation panel made of a mixture of wood and fibre binder and a method of manufacture of the panel Not-in-force EP1582646B2 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
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EP1582646B2 (en) 2011-08-24
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PL1582646T5 (en) 2011-12-30
US20090142611A1 (en) 2009-06-04
US7550202B2 (en) 2009-06-23
DE102004011931A1 (en) 2005-09-29
ATE366850T1 (en) 2007-08-15
US20050214537A1 (en) 2005-09-29
DE102004011931B4 (en) 2006-09-14
PL1582646T3 (en) 2007-12-31
ES2286727T5 (en) 2012-01-20
EP1582646B1 (en) 2007-07-11

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