EP1110687A1 - Verfahren zur Herstellung einer leichten Faserplatte und leichte Faserplatte mit geschlossener Oberfläche - Google Patents
Verfahren zur Herstellung einer leichten Faserplatte und leichte Faserplatte mit geschlossener Oberfläche Download PDFInfo
- Publication number
- EP1110687A1 EP1110687A1 EP00124199A EP00124199A EP1110687A1 EP 1110687 A1 EP1110687 A1 EP 1110687A1 EP 00124199 A EP00124199 A EP 00124199A EP 00124199 A EP00124199 A EP 00124199A EP 1110687 A1 EP1110687 A1 EP 1110687A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fiberboard
- binder
- fibers
- bulk density
- fiber mat
- 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.)
- Granted
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 119
- 238000000034 method Methods 0.000 title claims abstract description 69
- 230000008569 process Effects 0.000 title claims abstract description 33
- 239000011230 binding agent Substances 0.000 claims abstract description 112
- 239000011094 fiberboard Substances 0.000 claims abstract description 95
- 238000010438 heat treatment Methods 0.000 claims abstract description 42
- 238000004519 manufacturing process Methods 0.000 claims description 16
- 229920005862 polyol Polymers 0.000 claims description 15
- 150000003077 polyols Chemical class 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 12
- 239000002023 wood Substances 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 11
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims description 10
- 229920000538 Poly[(phenyl isocyanate)-co-formaldehyde] Polymers 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 229920003002 synthetic resin Polymers 0.000 claims description 5
- 239000000057 synthetic resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 239000006260 foam Substances 0.000 claims 1
- 239000004814 polyurethane Substances 0.000 description 25
- 229920002635 polyurethane Polymers 0.000 description 21
- 229920002522 Wood fibre Polymers 0.000 description 19
- 239000002025 wood fiber Substances 0.000 description 17
- 238000006243 chemical reaction Methods 0.000 description 16
- 238000001035 drying Methods 0.000 description 16
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 6
- 238000009413 insulation Methods 0.000 description 6
- 230000009257 reactivity Effects 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 229920001807 Urea-formaldehyde Polymers 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000003892 spreading Methods 0.000 description 3
- 230000007480 spreading Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 241000294754 Macroptilium atropurpureum Species 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 150000002989 phenols Chemical class 0.000 description 2
- 229920000570 polyether Polymers 0.000 description 2
- 239000011496 polyurethane foam Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000011122 softwood Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 241000273930 Brevoortia tyrannus Species 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000011093 chipboard Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- HANVTCGOAROXMV-UHFFFAOYSA-N formaldehyde;1,3,5-triazine-2,4,6-triamine;urea Chemical compound O=C.NC(N)=O.NC1=NC(N)=NC(N)=N1 HANVTCGOAROXMV-UHFFFAOYSA-N 0.000 description 1
- SLGWESQGEUXWJQ-UHFFFAOYSA-N formaldehyde;phenol Chemical compound O=C.OC1=CC=CC=C1 SLGWESQGEUXWJQ-UHFFFAOYSA-N 0.000 description 1
- HMJMQKOTEHYCRN-UHFFFAOYSA-N formaldehyde;phenol;1,3,5-triazine-2,4,6-triamine;urea Chemical compound O=C.NC(N)=O.OC1=CC=CC=C1.NC1=NC(N)=NC(N)=N1 HMJMQKOTEHYCRN-UHFFFAOYSA-N 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000000417 fungicide Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002363 herbicidal effect Effects 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/005—Manufacture of substantially flat articles, e.g. boards, from particles or fibres and foam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
Definitions
- the invention relates to a method of manufacture a light fiberboard according to the preamble of the claim 1 and on a light fiberboard according to the generic term of claim 15.
- the invention relates very much to fiberboard low density, especially as insulation material, but also as Construction elements can be used, and on their Manufacturing.
- a typical representative of well-known fiberboard of the aforementioned application area are so-called soft wood fiber boards.
- a wet process is used to manufacture soft wood fiber boards known.
- grinding grinding or squeezing force Fibers made from wood are transformed into an aqueous Suspension transferred, which is typically only 2 to 3% by weight Contains fibers.
- This suspension with the maximum swollen Fibers are applied to a sieve belt through which one Drainage first by gravity and then over various suction and pre-press devices.
- the one there achievable degree of drainage is due to the water storage capacity of the swollen fibers and those given the desired low density of the later fiberboard only low permissible pressing forces limited downwards.
- pre-dewatering of the suspension obtained fiber mat wet fibers are dried without pressure after they have been calibrated. When drying, the individual wood fibers shrink together firm if no binding agent is used.
- a so-called dry process for the production of fiberboard from lignocellulose-containing fibers and binders is known.
- the fibers for this are obtained in the same way as for the wet process. Subsequently, however, they are not transferred into a suspension, but are dried down to a level in current dryers, ie in flight, which later enables the residual moisture to be removed more easily.
- the residual moisture of the fibers after drying is below 20%, typically below 10%.
- a binder is added to the fibers, which after the subsequent shaping of the fibers into a fiber mat when the fiber mat is hot-pressed between pressure-controlled heating surfaces to form a fiber plate, bonds the individual fibers to one another.
- Fiberboard according to the dry process is divided into high-density fiberboard (HDF), medium-density fiberboard (MDF), light and ultra-light fiberboard (ULF) within a density range of 900 to 450 kg per m 3 . It is characteristic of fiberboard according to the well-known dry process that even with so-called ultralight fiberboard (ULF), due to the still relatively high density, sufficiently good insulation effects are not achieved and the relatively high weight of the fiberboard must be taken into account when using the fiberboard as construction elements. However, these known fibreboards have smoothly closed surfaces which can also be coated directly with thin materials.
- the activation of the binder should take place, for example, by steam.
- a drying medium for example with hot air.
- the pressing surfaces should be sieve-like. In this way, like in a wet process, fiberboard with an open surface structured by the sieve surfaces used is produced, which also has all the disadvantages of known fiberboard produced in the wet process.
- DE 196 04 575 A1 discloses a process for producing polyurethane-bonded fiberboard, which can be classified as a special drying process.
- the known method makes use of a binder with a first binder component having NCO groups and a second binder component having at least one polyol.
- the at least two binder components are applied to fibers separately or at least without any noteworthy preliminary reaction in a mixture, so that the polyurethane bond takes place as late as possible in the manufacturing process and thus essentially during hot pressing as a heat treatment.
- the second binder component containing the polyol is first applied to the fibers, while the first binder component containing NCO groups is applied to the same fibers only afterwards and as late as possible before the fibers are formed into the fiber mat.
- the binder components for the polyurethane bond or the suppression of a pre-reaction of the binder components the entire reactivity of the binder for the bonding of the fibers is to be retained when the fiber mat is hot-pressed to the fiber boards. It is known that the polyurethane reaction between the binder component containing the NCO groups and the binder component containing the polyol starts spontaneously when these two binder components meet, provided that it is not chemically blocked.
- the invention has for its object a method for Manufacture of light fiberboard according to the generic term of To show claim 1, the simple and economical is feasible and yet to fiberboard with improved Surface properties leads. Furthermore, an easy one Fiberboard according to the preamble of claim 15 be shown the improved surface properties having.
- this object is achieved by the method according to the Claim 1 and the fiberboard according to claim 15 solved.
- the new process is a dry process because the fiber moisture of the fibers when calibrating the fiber mat and during heat treatment to harden the binder is less than 20%. As with conventional drying processes, it can be below 10%.
- the heat treatment of the fiber mat takes place via smoothly closed heating surfaces, via which the heat is transferred to the fiber mat to harden the binder. It is important that the heating surfaces are distance-controlled and not pressure-controlled, as is the case when conventional drying processes are carried out.
- the very low bulk density of the fiberboard produced using the new process does not allow controlled pressure control of the heating surfaces.
- the fiber mat through the heating surfaces controlled at a distance can also be calibrated.
- the specified distance between the heating surfaces, the thickness of the fiberboard produced is typically 20 up to 300 mm. It is just in the area of larger thicknesses This area is astonishing that the fiberboard is still after a dry process can be produced.
- Bulk density profile of the fiberboard is set so that an edge increase of the bulk density compared to the mean
- the bulk density of the fiberboard is at least 60%.
- a A stronger edge increase of the bulk density is the basis for the Formation of a particularly solid closed surface of the manufacture fiberboard, which for example is also a remarkable Pressure stability compared to the average bulk density of the Can have fiberboard.
- a conventional synthetic resin from the wood-based panel industry can be used as the binder.
- the usual synthetic resins of the wood-based panel industry include urea-formaldehyde, melamine-urea-formaldehyde, melamine-urea-phenol-formaldehyde, phenol-urea-formaldehyde, phenol-formaldehyde and PMDI resins.
- the average bulk density of the fiberboard in the new process is set to 60 to 250 kg / m 3
- a foam-forming polyurethane binder can be used as the binder.
- the advantage of filling the cavities in the fiberboard between the individual fibers by the polyurethane foam is no longer noticeable in an economically viable manner.
- the particularly light fiberboard in the range below 150 kg / m 3 cannot be produced in a usable quality without the use of a foam-forming binder.
- foam-forming polyurethane binder As a foam-forming polyurethane binder, a so-called One-component system are used, which for example was developed by Bayer and basically is available. Preferably, however, it is easier to control Two-component system used, the foam-forming Polyurethane binder a first, NCO group-containing Binder component and a second at least one polyol having binder component.
- the new method provided the fibers before applying the To divide binder in at least two lots and one first of these batches only the first one containing the NCO groups Binder component and on a second of these lots only that second to apply the polyol-containing binder component and the parts of the fibers just before forming to mix the fiber mat together. Until the mixing of the Areas of the fibers are the two binder components completely separated from each other. Even while mixing the parts of the fibers are not yet worth mentioning Contact of the two binder components. Only when molding the This mat turns up at the contact points of the fiber mat Fibers. However, this contact is still not enough to to trigger a significant polyurethane reaction alone.
- the first batch can generally be 10 up to 90% and the second lot corresponding to 90 to 10% of the entire fibers included. But it makes perfect sense if the first and second lots of fibers are approximately the same size are, d. H. for example 40 to 60% of the total Contain fibers.
- the new process can be both discontinuous as well be carried out continuously, which is preferred.
- At The heating surfaces are a continuous process typically on rear heated metal endless belts intended.
- the parts of the fibers after the application of the Binder components and separated before mixing are temporarily stored from each other.
- the reactivity of the Binder components takes the separate storage Batches of the fibers do not come off even in longer periods.
- the heat treatment can be carried out in this way be that in the middle of the molded body a temperature of only 50 to 100 ° C is reached. That means that compared to known methods very low temperatures in the middle of the Shaped body are sufficient. Conversely, these result in a high efficiency of those used in heat treatment Energy and short periods of time required for heat treatment are needed.
- the low temperature is the new one Process at least for curing the binder portion sufficient in the middle of the molded body if highly reactive polyurethane binders are used, their Reaction is not chemically constrained to a pre-reaction suppress.
- the fibers used in the new process processed, wood fibers in the form of conventional defibrator fiber.
- the proportion of binder can be wide in the new process Limits are chosen by the necessary strength of the Fiberboard on the one hand and the economy of Process in view of high binder costs on the other hand are set.
- the following information relates to the Use of a PUR binder.
- the average bulk density of the shaped body is set to 60 to 250 kg per m 3 , the binder content of the shaped body being set to a total of 2.5 to 5% by weight based on dry wood fibers.
- the average bulk density of the molded body is set at 250 to 400 kg / m 3 , the binder content of the molded body being adjusted to a total of 7 to 15% by weight based on dry wood fibers.
- the fiberboard can also be used as a building material, whereby their relatively low weight is particularly advantageous.
- the new method can also be carried out so that the Forming the preform from the fibers using a layered structure different compositions and / or proportions of Binder is set in the individual layers. So can, for example, the binder proportions in the cover layers a fiberboard be larger than in the middle layer, to ensure a particularly high stability of the cover layers to reach. But there are also other layer structures Adaptation to certain requirement profiles with the new procedure realizable. It goes without saying that lots of Fibers for different layers of the layer structure are not provided with each other before forming the fiber mat are mixed, but only those fibers that are used for one layer each with a uniform composition is provided are.
- Binder component containing polyol is the known broad Spectrum of the properties of polyurethane bonds exploited become.
- accelerator or retarder additives to one or both of the Binder components possible.
- fungicides and / or herbicidal additives used for the molded article to be produced become.
- mechanically stable fiberboard is obtained using a foam-forming binder, ie a polyurethane binder which has at least two binder components PMDI and polyol or which is a one-component system.
- a foam-forming binder ie a polyurethane binder which has at least two binder components PMDI and polyol or which is a one-component system.
- Such fiberboard can also be regarded as a polyurethane foam stabilized by fibers.
- the binder content of atro fibers is at least 5%, which is absolute in absolute terms, but is still relatively small.
- binder proportions From an average bulk density of about 150 kg / m 3 , fewer voids are present between the fibers, so that the proportion of binder can be reduced to below 5% atro fibers when using a foam-forming polyurethane binder. If the stabilities are not in the foreground, binder proportions down to above 1% can be sufficient. All percentages are understood as usual as percentages by weight.
- non-foam-forming binders ie conventional synthetic resins in the wood-based panel industry
- the proportion of binder should also be selected for lower strengths above 5%, and for higher strengths 7 to 15% of binder should be used.
- Mixing systems with the addition of melamine and phenols are preferred instead of the relatively fragile curing urea-formaldehyde resins. The usual trade-offs must be made between the price of the binder, possible formaldehyde elimination and possible harmful residual phenols.
- a foam-forming binder can also be used in the range of average bulk densities up to 350 kg / m 3 and above, in which case high-strength fiberboard can also be produced with relatively low binder proportions.
- Wood is used for the production of polyurethane-bound molded articles 1, which is crushed in the usual way and then in a defibrator 2 is broken down into individual wood fibers 3.
- the stream of wood fibers 3 is then in a Splitting device 4 divided into two parts 5 and 6, wherein games 5 and 6 are the same size.
- the Lot 5 is in an applicator 7 an NCO groups containing binder component 8, a so-called PMDI, upset.
- the formulation of PMDI's 8 corresponds to one such as those commonly used in the wood-based panel industry sole binder is used.
- the Lot 6 is at least one in an application device 9 Binder component 10 containing polyol applied.
- a mixture of a short chain with a long chain polyol is a mix from one part of diethylene glycol and one part of polyether alcohol the molecular weight 1000 can be used.
- Both application devices 7 and 9 work on the principle that the PMDI 8 or the polyol 10th is sprayed onto the wood fibers 3. Then the Batches 5 and 6 in separate buffers 11 if necessary and 12 temporarily stored. These can be conventional wood fiber bunkers act. Interim storage is essential optional and does not have to be mandatory. she allows it, however, the further process steps from here to here process steps described to ultimately decouple to achieve an optimal efficiency of the manufacturing process.
- the wood fibers 3 are Batches 5 and 6 mixed together.
- both Batches 5 and 6 become a fiber mat in the spreading device 14 15 scattered, which is a preform of the fiberboard produced here 18.
- the fiber mat 15 is in a calibration device 16 calibrated, which is a cold pre-compressing Pre-press acts.
- a Hot press 17 a heat treatment from which the desired Fiberboard 18 results.
- the hot press 17 is not like this to understand that the fiber mat 15 is absolutely under application is pressed together by pressure. Rather, the plates are the Hot press 17 distance-controlled in order to also without permanent counter pressure the fiber mat 15 to fiberboard 18 with a defined thickness get.
- the new process can be done both with a belt press as a hot press 17 and with a discontinuously working Hot press can be carried out. It can be beneficial instead of or alternatively to hot contact surfaces also one Hot air heating or high-frequency heating of the calibrated Provide fiber mat 15. When heating over hot contact surfaces it is advantageous to cover the surfaces of the Spray fiber mat 15 with water, so that the hot Contact surfaces evaporating water also inside the heat Fiber mat 15 transfers. This is particularly beneficial if the fiber mat 15 is very thick, d. H. more than 40 mm thick.
- the new procedure is basically also for the production of chipboard and other plates made of other lignocellulosic or other at least OH-containing particles applicable. This don't actually have to be made of wood. In particular can also use other herbal basic substances Find.
- the following examples have in common that the PMDI used, d. H. the binder component having NCO groups, a It had the same composition as in the wood-based panel industry is common.
- the second polyol binder component was the mix of one mentioned above Part of diethylene glycol and part of the molecular weight of polyether alcohol 1000.
- a simple rotary drum came as mixing device 13 to use.
- the mixing time of the two lots 5 and 6 was 10 seconds.
- the temperature of the contact surfaces of the Hot press 17 was set at 170 ° C. All percentages are in% by weight.
- the PMDI 8 was used in a proportion of 2.5% and the polyol 10 in a proportion of 1% based on dry wood fibers 3. After 240 seconds Dwell time of the fiber mat 15 in the hot press 17, a 100 mm thick fiberboard 18 was removed. The average bulk density of this fiberboard 18 was 80 kg / m 3 . Despite the very low compression of the wood fibers in this fiberboard, the fiberboard was completely sufficiently stable and manageable for an insulating material.
- the binder proportions corresponded to Example 1. After 300 seconds. Dwell time of the fiber mat 15 in the hot press 17, a 50 mm thick fiberboard 18 was removed. The average bulk density was 170 kg / m 3 . The flexural strength of the fiberboard 18 was 0.3 N / mm 2 . The compressive stress at 10% compression was 0.18 N / m 2 .
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Laminated Bodies (AREA)
Abstract
Description
- Figur
- ein Flußdiagramm zum prinzipiellen Ablauf einer speziellen Ausführungsform des neuen Verfahrens.
- 1 -
- Holz
- 2 -
- Defibrator
- 3 -
- Fasern
- 4 -
- Aufteileinrichtung
- 5 -
- Partie
- 6 -
- Partie
- 7 -
- Aufbringeinrichtung
- 8 -
- Bindemittelkomponente/PMDI
- 9 -
- Aufbringeinrichtung
- 10 -
- Bindemittelkomponente/Polyol
- 11 -
- Zwischenspeicher
- 12 -
- Zwischenspeicher
- 13 -
- Mischeinrichtung
- 14 -
- Streueinrichtung
- 15 -
- Fasermatte
- 16 -
- Kalibriereinrichtung
- 17 -
- Heißpresse
- 18 -
- Faserplatte
Claims (20)
- Verfahren zur Herstellung von leichten Faserplatten mit einer mittleren Rohdichte von unter 400 kg/m3 auf der Basis von Lignocellulose-haltigen Fasern und Bindemittel, wobei das Bindemittel auf die Fasern aufgebracht wird und wobei die Fasern danach zu einer Fasermatte geformt werden, die kalibriert und einer Wärmebehandlung zum Aushärten des Bindemittels unterzogen wird, dadurch gekennzeichnet, daß eine Faserfeuchte der Fasern (3) so eingestellt wird, daß sie beim Kalibrieren der Fasermatte (15) und bei der Wärmebehandlung weniger als 20 % beträgt, und daß die Fasermatte (15) bei der Wärmebehandlung zur Wärmeübertragung beidseitig mit glatt geschlossenen Heizflächen kontaktiert wird, wobei die einander gegenüberliegenden Heizflächen zur Einhaltung eines vorgegebenen Abstands voneinander distanzgesteuert werden und wobei ein Rohdichteprofil der Faserplatten (18) so eingestellt wird, daß sich eine Randüberhöhung der Rohdichte gegenüber der mittleren Rohdichte der Faserplatten (18) von mindestens 20 % ergibt.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Fasermatte (15) vor der Wärmebehandlung mit Wasser oder einer wässrigen Lösung besprüht wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der vorgegebene Abstand der Heizflächen zwischen 20 und 300 mm beträgt.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Rohdichteprofil der Faserplatten (18) so eingestellt wird, daß sich eine Randüberhöhung der Rohdichte gegenüber der mittleren Rohdichte der Faserplatten von mindestens 60 % ergibt.
- Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die mittlere Rohdichte der Faserplatten (18) auf 150 bis 350 kg/m3 eingestellt wird, wobei als Bindemittel (8, 10) ein übliches Kunstharz der Holzwerkstoffindustrie aus der Gruppe verwendet wird, die UF-, MUF-, MUPF-, PUF-, PF- und PMDI-Harze umfaßt.
- Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die mittlere Rohdichte der Faserplatten (18) auf 60 bis 250 kg/m3 eingestellt wird, wobei als Bindemittel (8, 10) ein schaumbildendes PUR-Bindemittel verwendet wird.
- Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß das schaumbildende PUR-Bindemittel eine erste, NCO-Gruppen aufweisende Bindemittelkomponente (8) und eine zweite mindestens ein Polyol aufweisende Bindemittelkomponente (9) aufweist.
- Verfahren nach Anspruch 7, dadurch gekennzeichnet, daß die Fasern vor dem Aufbringen des Bindemittels (8,9) in mindestens zwei Partien (5,6) aufgeteilt werden, daß auf eine erste (5) dieser Partien nur die erste, die NCO-Gruppen aufweisende Bindemittelkomponente (8) und auf eine zweite (6) dieser Partien nur die zweite, das Polyol aufweisende Bindemittelkomponente (9) aufgebracht wird und daß die Partien (5, 6) der Fasern (3) vor dem Formen der Fasermatte (15) miteinander vermischt werden.
- Verfahren nach Anspruch 8, dadurch gekennzeichnet, daß die erste Partie (5) 10 bis 90 % und die zweite Partie (6) 90 bis 10 % der gesamten Fasern (3) enthält.
- Verfahren nach Anspruch 9, dadurch gekennzeichnet, daß die erste Partie (5) 40 bis 60 % und die zweite Partie (6) 60 bis 40 % der gesamten Fasern (3) enthält.
- Verfahren nach einem der Ansprüche 8 bis 10, dadurch gekennzeichnet, daß auf eine dritte Partie der Fasern (3) keine Bindemittelkomponente vor dem Vermischen aufgebracht wird.
- Verfahren nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß das Verfahren kontinuierlich durchgeführt wird.
- Verfahren nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß die Wärmebehandlung bis zum Erreichen einer Temperatur von 50 bis 100 °C in der Mitte der Fasermatte (15) vorgenommen wird.
- Verfahren nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß beim Formen der Fasermatte (15) aus den Fasern (3) ein Schichtaufbau mit unterschiedlichen Zusammensetzungen und/oder Anteilen des Bindemittels in den einzelnen Schichten eingestellt wird.
- Leichte Faserplatte mit einer mittleren Rohdichte von unter 400 kg/m3 auf der Basis von Lignocellulose-haltigen Fasern und Bindemittel, dadurch gekennzeichnet, daß die Faserplatte (18) beidseitig glatt geschlossene Oberflächen und eine Randüberhöhung der Rohdichte gegenüber ihrer mittleren Rohdichte von mindestens 20 % aufweist.
- Faserplatte nach Anspruch 15, dadurch gekennzeichnet, daß die Faserplatte (18) eine Dicke zwischen 20 und 300 mm aufweist.
- Faserplatte nach Anspruch 15 oder 16, dadurch gekennzeichnet, daß die Randüberhöhung der Rohdichte gegenüber ihrer mittleren Rohdichte mindestens 60 % beträgt.
- Faserplatte nach einem der Ansprüche 15 bis 17, dadurch gekennzeichnet, daß die mittlere Rohdichte der Faserplatte (18) 150 bis 350 kg/m3 beträgt, wobei als Bindemittel ein übliches Kunstharz der Holzwerkstoffindustrie aus der Gruppe ist, die UF-, MUF-, MUPF-, PUF-, PF- und PMDI-Harze umfaßt.
- Faserplatte nach einem der Ansprüche 15 bis 17, dadurch ge kennzeichnet, daß die mittlere Rohdichte der Faserplatten (18) 60 bis 250 kg/m3 beträgt, wobei das Bindemittel eine schaumbildendes PUR-Bindemittel ist.
- Faserplatte nach einem der Ansprüche 15 bis 19, dadurch gekennzeichnet, daß die Faserplatte (18) einen Schichtaufbau mit unterschiedlichen Zusammensetzungen und/oder Anteilen des Bindemittels in den einzelnen Schichten aufweist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19963096 | 1999-12-24 | ||
DE19963096A DE19963096C1 (de) | 1999-12-24 | 1999-12-24 | Verfahren zur Herstellung Polyurethan-gebundener Formkörper aus Lignocellulose-haltigen Partikeln |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1110687A1 true EP1110687A1 (de) | 2001-06-27 |
EP1110687B1 EP1110687B1 (de) | 2005-12-21 |
EP1110687B2 EP1110687B2 (de) | 2010-02-03 |
Family
ID=7934563
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00124199A Expired - Lifetime EP1110687B2 (de) | 1999-12-24 | 2000-11-08 | Verfahren zur Herstellung einer leichten Faserplatte |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1110687B2 (de) |
AT (1) | ATE313421T1 (de) |
CY (1) | CY1104997T1 (de) |
DE (2) | DE19963096C1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10338007A1 (de) * | 2003-08-19 | 2005-03-24 | Glunz Ag | Verfahren zur Herstellung eines Formkörpers aus leichtem Holzfaserdämmstoff und Formkörper aus leichtem Holzfaserdämmstoff |
DE102007025801A1 (de) | 2007-06-02 | 2008-12-04 | Glunz Ag | Verfahren zur Herstellung eines leichten flexiblen Formkörpers auf der Basis von Lignocellulose haltigen Fasern |
EP2062709A1 (de) | 2007-11-23 | 2009-05-27 | Glunz Ag | Verfahren zur Herstellung von Platten auf der Basis von mit Bindemittel beleimten Teilchen und dadurch herstellbare Platten |
EP3272480A1 (de) * | 2016-07-21 | 2018-01-24 | GCE Deutschland GmbH | Verfahren zur herstellung einer faserplatte |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202006009318U1 (de) * | 2006-05-08 | 2007-09-20 | Dammers, Dirk | Platte, insbesondere Paneel zur Verkleidung von Wänden bzw. Decken oder als Bodenbelag |
DE102007019416A1 (de) * | 2006-07-19 | 2008-01-24 | Pfleiderer Holzwerkstoffe Gmbh & Co. Kg | Grundwerkstoff, dessen Herstellungsverfahren sowie Verwendung |
DE102010056491A1 (de) | 2009-12-23 | 2011-07-21 | Technische Universität Dresden, 01069 | Formkörper aus Pflanzenmaterial und Verfahren zu dessen Herstellung |
DE102013103272B4 (de) | 2013-04-02 | 2016-09-15 | Homann Holzwerkstoffe GmbH | Verfahren zur Herstellung einer Sandwich-Faserplatte |
DE202014106187U1 (de) | 2014-12-19 | 2016-02-22 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Dämm- und/oder Schallschutzplatte |
DE102014119242A1 (de) | 2014-12-19 | 2016-06-23 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Dämm- und/oder Schallschutzplatte, deren Verwendung und ein Verfahren zur Herstellung von Dämm- und/oder Schallschutzplatten |
DE202017106335U1 (de) | 2017-10-19 | 2017-11-17 | Gce deutschland gmbh | Wellenfaserplatte im Nass- und Halbtrocken-Verfahren |
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FR1103226A (fr) * | 1954-06-28 | 1955-10-31 | Rougier & Fils Sa | Panneaux en particules de bois agglomérés |
FR1184509A (fr) * | 1953-05-13 | 1959-07-22 | Procédé de fabrication de plaques de bois artificielles formées à partir de pctits morceaux de bois et de liants et plaques fabriquées par ce procédé | |
US4175148A (en) * | 1976-11-05 | 1979-11-20 | Masonite Corporation | Product containing high density skins on a low density core and method of manufacturing same |
WO1997004933A1 (en) * | 1995-07-27 | 1997-02-13 | Sunds Defibrator Industries Ab | A method of producing lignocellulosic boards |
DE19604575A1 (de) * | 1996-02-08 | 1997-08-28 | Glunz Ag | Verfahren zur Herstellung von Span- oder Faserplatten |
DE19647240A1 (de) | 1996-11-15 | 1998-05-28 | Hofa Homann Gmbh & Co Kg | Holzfaserplatte und Verfahren zu ihrer Herstellung |
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Publication number | Priority date | Publication date | Assignee | Title |
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DE2538999C3 (de) * | 1975-09-02 | 1981-10-22 | Lignotock Verfahrenstechnik Gmbh, 1000 Berlin | Bindemittelkomponente für Polyurethan-Bindemittel |
-
1999
- 1999-12-24 DE DE19963096A patent/DE19963096C1/de not_active Expired - Fee Related
-
2000
- 2000-11-08 EP EP00124199A patent/EP1110687B2/de not_active Expired - Lifetime
- 2000-11-08 DE DE50011903T patent/DE50011903D1/de not_active Expired - Lifetime
- 2000-11-08 AT AT00124199T patent/ATE313421T1/de active
-
2006
- 2006-03-20 CY CY20061100387T patent/CY1104997T1/el unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1184509A (fr) * | 1953-05-13 | 1959-07-22 | Procédé de fabrication de plaques de bois artificielles formées à partir de pctits morceaux de bois et de liants et plaques fabriquées par ce procédé | |
FR1103226A (fr) * | 1954-06-28 | 1955-10-31 | Rougier & Fils Sa | Panneaux en particules de bois agglomérés |
US4175148A (en) * | 1976-11-05 | 1979-11-20 | Masonite Corporation | Product containing high density skins on a low density core and method of manufacturing same |
WO1997004933A1 (en) * | 1995-07-27 | 1997-02-13 | Sunds Defibrator Industries Ab | A method of producing lignocellulosic boards |
DE19604575A1 (de) * | 1996-02-08 | 1997-08-28 | Glunz Ag | Verfahren zur Herstellung von Span- oder Faserplatten |
DE19647240A1 (de) | 1996-11-15 | 1998-05-28 | Hofa Homann Gmbh & Co Kg | Holzfaserplatte und Verfahren zu ihrer Herstellung |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10338007A1 (de) * | 2003-08-19 | 2005-03-24 | Glunz Ag | Verfahren zur Herstellung eines Formkörpers aus leichtem Holzfaserdämmstoff und Formkörper aus leichtem Holzfaserdämmstoff |
DE10338007B4 (de) * | 2003-08-19 | 2005-12-29 | Glunz Ag | Verfahren zur Herstellung eines Dämmformkörpers aus leichtem Holzfaserdämmstoff und Dämmformkörper aus leichtem Holzfaserdämmstoff |
DE102007025801A1 (de) | 2007-06-02 | 2008-12-04 | Glunz Ag | Verfahren zur Herstellung eines leichten flexiblen Formkörpers auf der Basis von Lignocellulose haltigen Fasern |
EP2000508A2 (de) | 2007-06-02 | 2008-12-10 | Glunz Ag | Verfahren zur Herstellung eines leichten flexiblen Formkörpers auf der Basis von lignocellulosehaltigen Fasern |
EP2000508A3 (de) * | 2007-06-02 | 2009-11-25 | Glunz Ag | Verfahren zur Herstellung eines leichten flexiblen Formkörpers auf der Basis von lignocellulosehaltigen Fasern |
EP2062709A1 (de) | 2007-11-23 | 2009-05-27 | Glunz Ag | Verfahren zur Herstellung von Platten auf der Basis von mit Bindemittel beleimten Teilchen und dadurch herstellbare Platten |
EP3272480A1 (de) * | 2016-07-21 | 2018-01-24 | GCE Deutschland GmbH | Verfahren zur herstellung einer faserplatte |
EP3275611A1 (de) * | 2016-07-21 | 2018-01-31 | GCE Deutschland GmbH | Verfahren zur herstellung einer faserplatte |
Also Published As
Publication number | Publication date |
---|---|
EP1110687B2 (de) | 2010-02-03 |
DE50011903D1 (de) | 2006-01-26 |
DE19963096C1 (de) | 2001-05-03 |
EP1110687B1 (de) | 2005-12-21 |
CY1104997T1 (el) | 2009-11-04 |
ATE313421T1 (de) | 2006-01-15 |
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