EP2853648B1 - Utilisation de particules de cuir dans des plaques en matériau bois pour la réduction des émissions de composés organiques volatiles (COV) - Google Patents

Utilisation de particules de cuir dans des plaques en matériau bois pour la réduction des émissions de composés organiques volatiles (COV) Download PDF

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Publication number
EP2853648B1
EP2853648B1 EP13186648.5A EP13186648A EP2853648B1 EP 2853648 B1 EP2853648 B1 EP 2853648B1 EP 13186648 A EP13186648 A EP 13186648A EP 2853648 B1 EP2853648 B1 EP 2853648B1
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EP
European Patent Office
Prior art keywords
wood
leather
leather particles
fibre insulation
wood fibre
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.)
Not-in-force
Application number
EP13186648.5A
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German (de)
English (en)
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EP2853648A1 (fr
Inventor
Norbert Dr. Kalwa
Jens Siems
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.)
Swiss Krono Tec AG
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Swiss Krono Tec AG
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Filing date
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Priority to EP13186648.5A priority Critical patent/EP2853648B1/fr
Priority to PL13186648T priority patent/PL2853648T3/pl
Priority to ES13186648.5T priority patent/ES2641740T3/es
Priority to PT131866485T priority patent/PT2853648T/pt
Publication of EP2853648A1 publication Critical patent/EP2853648A1/fr
Application granted granted Critical
Publication of EP2853648B1 publication Critical patent/EP2853648B1/fr
Not-in-force legal-status Critical Current
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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 present invention relates to the use of leather particles in wood fiber insulation boards according to claim 1, a wood fiber insulation board containing leather particles according to claim 10 and a method for producing this wood fiber insulation board according to claim 12.
  • Lignocellulose includes as components cellulose, hemicellulose and lignin.
  • Cellulose is a long-chain macromolecule composed of glucose units, hemicellulose a short-chain, branched macromolecule of pentoses and lignin a three-dimensional macromolecule of methoxyphenylpropane units.
  • Cellulose and hemicelluloses form the skeletal substance of the cell wall, while lignin as a filling substance in the cell structure causes the lignification.
  • VOCs Volatile organic compounds
  • VOCs include volatile organic compounds that evaporate easily or are already gaseous at low temperatures, such as at room temperature.
  • the volatile compounds either accumulate as by-products during the manufacturing process or are formed during growth of the tree. These are then released more or less quickly to the environment. Both processes lead to specific Problems that may make the entire manufacturing process more expensive and / or cause odors in the use of wood fiber insulation boards.
  • document EP 2 135 892 A2 also discloses a wood-based panel comprising 10 to 90% by weight of wood fibers, 10 to 90% by weight of leather particles, at least one flame retardant and at least one bicomponent binder based on a plastic fiber (eg polyethylenimines (PEI) together with lignin).
  • a plastic fiber eg polyethylenimines (PEI) together with lignin.
  • the present invention is based on the technical object of further increasing the emission of volatile organic compounds (VOCs) from wood fiber insulating boards reduce without this resulting in loss of technical properties of the insulation material for thermal conductivity or density.
  • VOCs volatile organic compounds
  • the present invention was the technical object of finding a suitable raw material, which is used in combination with wood fibers and has a favorable emission behavior.
  • leather particles are used in wood fiber insulation panels which result in a reduction in the emission of volatile organic compounds (VOCs) from wood fiber insulation panels.
  • VOCs volatile organic compounds
  • leather pulp used here is a material made of shavings, for example chrome shavings and comminuted, vegetable-tanned leather residues from the leather-processing industry. Leather residues are produced in large quantities during the processing of leather or the production of various products. Of the leather obtained after the tanning process to a thickness of more than 1 cm, usually only a few millimeters can be used. The remainder is waste and is used only to a small extent, for example for the production of shoe soles. Another advantage is that the leather in the various processing processes already obtained in comminuted form as so-called shavings, so that the mechanical effort for fiber production significantly reduced.
  • leather is predominantly composed of collagen, a polypeptide that forms three-dimensional fiber structures.
  • the amino acids glycine, proline, 4-hydroxyproline and 5-hydroxylysine are particularly common in the polypeptide, with almost every third residue in the collagen molecule being glycine.
  • the leather particles used herein are preferably leather fibers, which are obtained from reduced, vegetable tanned leather residues of the leather processing industry. Such leather fibers typically have a length of up to 20 mm, preferably 5 to 15 mm and a thickness of up to 1 mm, preferably 0.5 to 1 mm.
  • Lederfalzs Georgnne be used mainly for the production of insulation boards, resulting from the tanning of leather using other tannins. Excluded are leather creases that occur during the tanning of leather using chrome-containing tannins. Accordingly, the use of chrome rebates is excluded for ecological reasons.
  • the Lederfalzs fonde can occur in the tanning and processing of leather at various points.
  • the leather particles can be produced as a relatively moist material directly in the tanning process (moisture: about 50% by weight) or at the end of the leather production process (moisture ⁇ 10%). Both materials can be used for use in insulation production. Although drying is unnecessary, it consumes energy and causes higher costs for the raw material.
  • the leather particles have a moisture content of 20 to 70%, preferably 30 to 60%, particularly preferably 45 to 55%.
  • a typical moisture value of the leather particles or leather fibers used is 50%.
  • the leather particles are used here to reduce the emission of organic acids, in particular to reduce the emission of acetic acid from wood fiber insulation panels.
  • Organic acids are produced in particular as cleavage products of the wood constituents cellulose, hemicelluloses and lignin, alkanoic acids such as acetic acid and propionic acid or aromatic acids preferably being formed.
  • the leather particles are used to reduce the emission of aldehydes from wood fiber insulation panels.
  • the leather particles are used to reduce aldehydes released during the aqueous wood pulping process.
  • the aldehydes are formed from the basic building blocks of cellulose or hemicellulose.
  • the aldehyde furfural is formed from mono- and disaccharides of cellulose or hemicellulose, while aromatic aldehydes can be liberated during the partial hydrolytic exclusion of lignin.
  • the leather particles are used to reduce the emission of C1-C10 aldehydes, particularly preferably formaldehyde, acetaldehyde, pentanal, hexanal or else furfural in wood-based panels.
  • the leather particles are used to reduce the emission of terpenes. So can the leather particles for Reduction of terpenes released from the wood shavings or wood fibers used in the wood-based panel, in particular C10-monoterpenes and C15-sesquiterpenes, in particular preferably acyclic or cyclic monoterpenes.
  • Typical acyclic terpenes are terpene hydrocarbons such as myrcene, terpene alcohols such as gerianol, linaool, ipsinol and terpene aldehydes such as citral.
  • Typical representatives of the monocyclic terpenes are p-menthane, terpeninol, limonene or carvone, and typical representatives of the bicyclic terpenes are caran, pinane, bornan, in particular 3-carene and ⁇ -pinene being of importance.
  • Terpenes are components of the tree resins and therefore especially in very resinous tree species such as pine or spruce.
  • the leather particles are used in wood fiber insulating panels, which comprises 40 to 65% by weight, preferably 45 to 60% by weight, in particular 45 to 55% by weight of wood fibers.
  • Wood particles in the present case are lignocellulose-containing comminution products, such as e.g. Wood fibers, wood shavings or wood strands to understand.
  • wood fibers in particular in the use of wood fibers in wood fiber insulation boards, in particular dry wood fibers having a length of 1 mm to 20 mm, preferably from 1.5 mm to 10 mm and a thickness of 0, 05 mm to 1 mm for use.
  • the present wood fiber insulation board comprises 5 to 30% by weight, preferably 10 to 20% by weight, of leather particles or leather fibers.
  • a suitable binder is added to the mixture of wood fibers and leather particles or leather fibers in order to ensure a cohesive connection of the particles with one another.
  • Formaldehyde-free binders in the form of liquid or powdery adhesive components as well as in the form of binder fibers, such as isocyanates or synthetic fibers, can be used as binders for the wood-fiber / leather particle mixture which are not suitable for the invention as starting mixture for the production of wood fiber insulation boards.
  • an isocyanate is selected from a group containing aliphatic and aromatic isocyanates.
  • aliphatic isocyanates for example, hexamethylene diisocyanate (HDI), isophorone diisocyanate (IPDI) and / or 1,4-cyclohexyl diisocyanate (CHDI) can be used.
  • Typical suitable aromatic isocyanates are, for example, diphenylmethane diisocyanate (MDI) or tolylene diisocyanate (TDI) or also polymeric diphenylmethane diisocyanate (PMDI), the latter being particularly preferred.
  • MDI diphenylmethane diisocyanate
  • TDI tolylene diisocyanate
  • PMDI polymeric diphenylmethane diisocyanate
  • the isocyanate is subject to two chemical reactions when used as a binder.
  • plastic fibers are also used as binders for the wood particle-leather particle mixture.
  • the plastic fibers according to the invention are bicomponent fibers.
  • the thermally activatable plastic or binder fibers carry out both a binding and a support function in the matrix of wood fibers and leather particles due to their spatial distribution.
  • Bicomponent fibers typically consist of a carrier filament or a core fiber made of a plastic with higher temperature resistance, in particular polyesters, which are coated or sheathed by a plastic with a lower melting point, in particular polyethylene.
  • the shell or the jacket allows after melting a cross-linking of the wood particles and / or leather particles with each other.
  • the wood fiber insulating panels produced using the leather particles accordingly comprise 40 to 65% by weight, preferably 45 to 60% by weight, particularly preferably 45 to 55% by weight of wood fibers, 5 to 30% by weight, preferably 10 to 20% by weight of leather particles, at least one flame retardant and at least one binder.
  • the flame retardant may be added in an amount between 5 and 20% by weight, preferably between 8 and 10% by weight.
  • Typical flame retardants are selected from the group comprising phosphates, borates, in particular ammonium polyphosphate, tris (tri-bromneopentyl) phosphate, zinc borate or boric acid complexes of polyhydric alcohols.
  • the present wood fiber insulation panels are characterized by a reduced volatile compounds (VOCs) compared to wood-based panels without leather particles.
  • VOCs volatile compounds
  • the reduction in VOC emission, in particular of organic acids, is up to 50%, preferably 45%, in particular 40% lower than in comparison with conventional wood-based panels.
  • the wood fiber insulation board according to the invention is preferably characterized by a reduction of the emission of organic acids, in particular acetic acid, of aldehyde and / or terpenes.
  • step a To produce the wood fibers according to step a), the wood chips are first cleaned, then defibered and dried.
  • the mixing of the wood fibers with the leather particles can take place during various process steps.
  • the leather particles can be added before or during the defibration process of the wood chips, eg in the digester or refiner. It is also generally possible to bring the leather particles into contact with the wood fibers in the blow-line or during the fiber mixing process.
  • the wood fibers are used depending on the type of equipment and method used before or after mixing with the leather particles with plastic fibers as Binder additionally applied. After scattering the mixture of wood fibers, leather particles and plastic fibers as a binder on a conveyor belt and the formation of a wood fiber mat is first carried out a pre-pressing, in which the thickness of the mat is reduced in the context of a cold pre-compression. Then a mat trimming is performed while the side panel is separated from the fiber mat and the side panels returned to the process.
  • bicomponent fibers are used as binders.
  • liquid or powdery adhesive components these are mixed with the wood fibers and / or leather particles, spread on a conveyor belt and then pressed in a hot pressing process to a plate.
  • the mixing of the leather particles with the liquid and / or powdery adhesive component may e.g. during dosing in the blow-line feed.
  • the mixture of leather particles and adhesive component is then injected into the wood fiber stream.
  • the leather particles and the binder can also be contacted successively with the wood fiber stream. It is also conceivable to introduce the leather particles during the damping of wood chips or to add in the refiner
  • the mixing derselbigen with the wood fibers and / or Lederpartiklen after drying of the wood fibers and / or leather particles is carried out in a separate process.
  • the mixture of wood fibers, leather particles and binder fibers is scattered on a conveyor belt.
  • the sprinkled mixture or fleece is then introduced into a hot air oven, in which the fleece formed from wood fibers, binder fibers and leather particles is flowed through by hot air, wherein the binding fibers are heated and melted and it comes to matting.
  • the mat can be calibrated.
  • the activating of the binder or of the bico fibers in the wood fiber mat associated with the compacting (or pressing) and / or heating is preferably carried out at temperatures between 100 ° C and 250 ° C, preferably 130 ° C and 220 ° C, in particular at 200 ° C.
  • activation of the binder typically occurs, eg, melting of the thermoplastic shell of bicomponent fibers whereby a firm connection between the wood fibers, leather particles and the binder are produced.
  • a construction of a support framework arises from the bicomponent fibers, into which the wood fibers and leather particles are embedded or adhesively bonded.
  • the fiber mat is finally reduced to the required dimensions and cooled.
  • binder in addition to the already mentioned binder, in particular of aldehyde-free binders from the group of isocyanates and bicomponent fibers, further binders such as a granulate of plastic may be added.
  • a granulate may be a plastic granulate as obtained in the recycling of plastic articles from the dual system.
  • Wood fibers, bicrofibers (polyester fibers encased in polyethylene) and moist leather shavings (tanned with glyoxal, moisture content: approx. 50%) were mixed in the premix of the insulation system.
  • the proportion of bicafiber serving as scaffold was kept constant at 20% by weight. The proportions of wood fiber were reduced depending on the dosage of the shavings.
  • the premixed fibers were scattered to a fiber bed and passed through the heating furnace.
  • the BiCo fibers melt and create a support matrix.
  • the insulation materials produced with leather shavings showed a partly clearer coloration.
  • the insulating materials were then tested in a test chamber according to the AgBB scheme (Committee for the Health Assessment of Construction Products) on their VOC emission, with only the acetic acid value is given as a guide parameter.
  • the emission levels of the other acids and aldehydes have been reduced in similar percentages.
  • variant Wood fiber weight% Flame retardant wt% Bicafiber wt.% leather cuttings weight%, atro Acetic acid emission after 7d in yg / m 3 O-sample 73.0 7 20 0 1426 1 64.4 7 20 8.6 925 2 55.8 7 20 17.2 741
  • the acetic acid emissions are significantly reduced, with the reduction of the acetic acid emission being significantly higher than the percentage of leather fibers.
  • the leather fibers thus actually cause an emission reduction.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Claims (13)

  1. Utilisation de particules de cuir dans des panneaux isolants à base de fibres de bois servant à réduire les émissions de composés organiques volatils (COV) sous la forme d'aldéhydes libérés au cours du défibrage du bois en phase aqueuse et/ou d'acides organiques provenant desdits panneaux isolants à base de fibres de bois, dans laquelle les panneaux isolants à base de fibres de bois contiennent des liants sans formaldéhyde.
  2. Utilisation de particules de cuir dans des panneaux isolants à base de fibres de bois selon la revendication 1, caractérisée en ce que les particules de cuir sont présentes sous la forme de fibres de cuir, en particulier de rognures de cuir.
  3. Utilisation de particules de cuir dans des panneaux isolants à base de fibres de bois selon l'une quelconque des revendications précédentes, caractérisée en ce que les particules de cuir présentent une humidité de 20 à 70 %, de manière préférée 30 à 60 %, de manière particulièrement préférée de 45 à 55 %.
  4. Utilisation de particules de cuir dans des panneaux isolants à base de fibres de bois selon l'une quelconque des revendications précédentes servant à réduire les émissions des acides d'alcane, en particulier d'acide acétique, provenant des panneaux isolants à base de fibres de bois.
  5. Utilisation de particules de cuir dans des panneaux isolants à base de fibres de bois selon l'une quelconque des revendications précédentes servant à réduire les émissions de formaldéhyde, d'acétaldéhyde, de pentanal, d'hexanal ou de furfural provenant des panneaux isolants à base de fibres de bois.
  6. Utilisation de particules de cuir dans des panneaux isolants à base de fibres de bois selon l'une quelconque des revendications précédentes servant à réduire les émissions de terpènes.
  7. Utilisation de particules de cuir dans des panneaux isolants à base de fibres de bois selon l'une quelconque des revendications précédentes, caractérisée en ce que le panneau isolant à base de fibres de bois comprend 40 à 65 % en poids, de manière préférée 45 à 60 % en poids, de manière particulièrement préférée 45 à 55 % en poids de fibres de bois.
  8. Utilisation de particules de cuir dans des panneaux isolants à base de fibres de bois selon l'une quelconque des revendications précédentes, caractérisée en ce que le panneau isolant à base de fibres de bois comprend 5 à 30 % en poids, de manière préférée 10 à 20 % en poids de particules de cuir.
  9. Utilisation de particules de cuir dans des panneaux isolants à base de fibres de bois selon l'une quelconque des revendications précédentes, caractérisée en ce que le panneau isolant à base de fibres de bois contient en tant que liant des fibres synthétiques.
  10. Panneau isolant à base de fibres de bois, caractérisé par
    40 à 65 % en poids, de manière préférée 45 à 60 % en poids, de manière particulièrement préférée 45 à 55 % en poids de fibres de bois,
    5 à 30 % en poids, de manière préférée 10 à 20 % en poids de particules de cuir,
    au moins un agent retardateur de flammes et des fibres synthétiques sous la forme de fibres à deux composants en tant que liants,
    avec une réduction de jusqu'à 50 %, de manière préférée 45 %, en particulier 40 % des émissions de composés légèrement volatils (COV) sous la forme d'aldéhydes libérés au cours du défibrage du bois en phase aqueuse et/ou d'acides organiques en comparaison avec des panneaux isolants à base de fibres de bois sans particules de cuir.
  11. Panneau isolant à base de fibres de bois selon la revendication 10, caractérisé par une réduction des émissions d'acides d'alcane, en particulier d'acide acétique, de formaldéhyde, d'acétaldéhyde, de pentanal, d'hexanal ou de furfural et/ou de terpènes.
  12. Procédé servant à fabriquer un panneau isolant à base de fibres de bois selon l'une quelconque des revendications 10 à 11, caractérisé par les étapes de procédé qui suivent :
    a) la fabrication de fibres de bois à partir de copeaux de bois,
    b) le mélange des fibres de bois à des particules de cuir, à un agent retardateur de flammes et à des fibres synthétiques en tant que liants, dans lequel les fibres synthétiques sont mélangées à des fibres de bois et/ou à des particules de cuir après leur séchage,
    c) la dispersion du mélange composé de fibres de bois, de particules de cuir, d'un agent retardateur de flammes et de fibres synthétiques en tant que liants sur une bande transporteuse, et
    d) le compactage et/ou le réchauffage de la nappe de fibres formée.
  13. Procédé selon la revendication 12, caractérisé en ce que le compactage et/ou le réchauffage du mélange dispersé à l'étape c) sont effectués à des températures comprises entre 100 °C et 250 °C, de manière préférée 130 °C et 220 °C, en particulier à 200 °C.
EP13186648.5A 2013-09-30 2013-09-30 Utilisation de particules de cuir dans des plaques en matériau bois pour la réduction des émissions de composés organiques volatiles (COV) Not-in-force EP2853648B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP13186648.5A EP2853648B1 (fr) 2013-09-30 2013-09-30 Utilisation de particules de cuir dans des plaques en matériau bois pour la réduction des émissions de composés organiques volatiles (COV)
PL13186648T PL2853648T3 (pl) 2013-09-30 2013-09-30 Zastosowanie cząstek skórzanych w płytach z tworzywa drzewnego do zmniejszenia emisji lotnych związków organicznych (VOC)
ES13186648.5T ES2641740T3 (es) 2013-09-30 2013-09-30 Uso de partículas de cuero en placas de materia derivada de la madera para reducir la emisión de compuestos orgánicos volátiles (VOC)
PT131866485T PT2853648T (pt) 2013-09-30 2013-09-30 Utilização de partículas de couro em placas de materiais de madeira para a redução da emissão de compostos orgânicos voláteis (covs)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13186648.5A EP2853648B1 (fr) 2013-09-30 2013-09-30 Utilisation de particules de cuir dans des plaques en matériau bois pour la réduction des émissions de composés organiques volatiles (COV)

Publications (2)

Publication Number Publication Date
EP2853648A1 EP2853648A1 (fr) 2015-04-01
EP2853648B1 true EP2853648B1 (fr) 2017-08-09

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EP13186648.5A Not-in-force EP2853648B1 (fr) 2013-09-30 2013-09-30 Utilisation de particules de cuir dans des plaques en matériau bois pour la réduction des émissions de composés organiques volatiles (COV)

Country Status (4)

Country Link
EP (1) EP2853648B1 (fr)
ES (1) ES2641740T3 (fr)
PL (1) PL2853648T3 (fr)
PT (1) PT2853648T (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023285111A1 (fr) * 2021-07-14 2023-01-19 Bader Gmbh & Co. Kg Matériau isolant et sa production

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2045829A (en) * 1979-03-22 1980-11-05 Ato Chimie Leather fibre-containing compound material and process for manufacturing the same

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
RU2032533C1 (ru) * 1992-03-17 1995-04-10 Фирсов Юрий Николаевич Способ изготовления древесностружечных плит
KR20080024107A (ko) 2005-07-06 2008-03-17 잇포샤 유시 코교 가부시키가이샤 알데히드류 포집제 및 이것을 이용한 목질판의 제조 방법
AT507040B1 (de) * 2008-06-19 2013-11-15 Lackinger Gerald Mag Verbundkörper
DE102009023643B4 (de) 2009-05-28 2016-08-18 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Holzwerkstoffprodukt und Verfahren zu dessen Herstellung
PL2567798T3 (pl) 2011-09-12 2013-12-31 SWISS KRONO Tec AG Zastosowanie poliaminy w tworzywach drzewnych w celu zmniejszenia emisji aldehydów i/lub kwasów

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2045829A (en) * 1979-03-22 1980-11-05 Ato Chimie Leather fibre-containing compound material and process for manufacturing the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023285111A1 (fr) * 2021-07-14 2023-01-19 Bader Gmbh & Co. Kg Matériau isolant et sa production

Also Published As

Publication number Publication date
ES2641740T3 (es) 2017-11-13
PT2853648T (pt) 2017-10-24
PL2853648T3 (pl) 2018-03-30
EP2853648A1 (fr) 2015-04-01

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