EP1519818A1 - Technologie de presse mdf - Google Patents

Technologie de presse mdf

Info

Publication number
EP1519818A1
EP1519818A1 EP02807596A EP02807596A EP1519818A1 EP 1519818 A1 EP1519818 A1 EP 1519818A1 EP 02807596 A EP02807596 A EP 02807596A EP 02807596 A EP02807596 A EP 02807596A EP 1519818 A1 EP1519818 A1 EP 1519818A1
Authority
EP
European Patent Office
Prior art keywords
glue
fibers
sawdust
wood
component
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
Application number
EP02807596A
Other languages
German (de)
English (en)
Other versions
EP1519818B1 (fr
Inventor
Josef Stutz
Dr. Dieter DÖHRING
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.)
Kronospan Technical Co Ltd
Original Assignee
Kronospan Technical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kronospan Technical Co Ltd filed Critical Kronospan Technical Co Ltd
Publication of EP1519818A1 publication Critical patent/EP1519818A1/fr
Application granted granted Critical
Publication of EP1519818B1 publication Critical patent/EP1519818B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B27N1/00—Pretreatment of moulding material
    • B27N1/02—Mixing the material with binding agent
    • 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
    • Y10T428/253—Cellulosic [e.g., wood, paper, cork, rayon, etc.]

Definitions

  • the invention relates to a component made from wood particles such as fibers or chip.
  • a method for producing the component is specified.
  • the invention relates in particular to panels made entirely or predominantly from wood fibers.
  • a production process for the production of a wood fiber board is known from the German trade magazine HK 1/88, pages 74 to 75, "Production of MDF boards”.
  • Cooked wood chips are fed to a so-called refiner.
  • the wood chips are processed into fibers in the refiner
  • the fibers are transported out of the refiner with the help of steam and passed on by means of a line called a "blow-line".
  • the vapor pressure is approximately 10 bar.
  • the temperature is approx. 1 50 to 1 60 ° C.
  • Glue is added in the "blow line”.
  • Phenol resins, urea resins or mixed resins made from urea and melamine are used as glue.
  • the "blow line” expands.
  • a swirl is caused by the expansion.
  • the glue mixes with the fibers.
  • the proportion of glue in relation to the fibers is approx. 22% by weight.
  • the “blow line” opens into the middle of a drying tube.
  • the drying tube has a diameter of, for example, 2.60 m. Air is blown through the drying tube at a temperature of 160 ° C., maximum of 220 to 240 ° C.
  • the moisture in the drying tube is reduced from 1 00% to 8 to 1 1%, and the resulting steam, which is contaminated with water-foreign substances, is separated from the fibers in subsequent cyclones and fed to the environment via chimneys.
  • the fibers with glue are fed in layers to a molding machine.
  • the fibers here are pressed in two phases. First, a pre-pressing takes place. The pre-pressed fibers are then pressed using high pressure and the application of heat to the board. Experts have found that the plates split if the temperature falls below 150 ° C during the pressing to the plate and is, for example, 140 ° C. The temperatures during the pressing are therefore typically 1 80 ° C.
  • a gluing device for the production of fiber boards is known from the document EP 0 744 259 A2.
  • a process for the production of boards from a wood-based material can be found in US Pat. No. 5,554,330.
  • GB 791, 554 discloses a method for mixing solid and liquid components.
  • a device for the continuous gluing of wood chips can be found in the document DE 41 15 047 C I.
  • Continuous mixing of chip and fibrous substances with binders can be found in the document DE-OS 1 956 898.
  • the extraction of glue from wooden components is disclosed in the documents PCT / I B98 / 00607 and WO 98/371 47.
  • Pre-vaporization processes are described in the publications DE-OS 44 41 01 7, US 1 1 1 7 95 and the Danish patent application No. 0302/97.
  • the object of the invention is to reduce production costs.
  • the object of the invention is achieved by one of the claimed methods.
  • a plate manufactured according to the method comprises the features of the subclaim.
  • the inventors have found that only the water vapor escaping at the high temperatures is responsible for the cleavage. If water vapor is not generated during pressing or at least only to a small extent as a result of sufficiently low temperatures, no splitting occurs.
  • the splitting can be avoided if the temperatures during the pressing are chosen low enough. It is important that no or only a small amount of water vapor development occurs during the pressing. Temperatures below 120 ° C have already proven to be sufficient. The temperature range is preferably between room temperature and 95 ° C. It is particularly preferably pressed at temperatures up to 60 ° C. The pressing speed is not or hardly influenced by the addition of heat. A delay may occur when pressing, if the wood components are to be brought to temperature, for example in the press. A delay occurs in this case because the heating can cause a time delay. If the fibers are pressed with the resin at temperatures of, for example, 200 ° C., the resins that are typically used cure completely or almost completely.
  • the resin does not harden, or at least only insignificantly, if it is pressed together with the wood chips, wood fibers, sawdust or mixtures thereof at temperatures below 1 20 ° C.
  • the person skilled in the art believed that the resin had to cure in order for a surface in components such as panels made of wood-based materials to be free of defects.
  • the resins used are in the form of low molecular weight components. Hardening means that the low-molecular components cross-link so that they form a stable network.
  • the component produced in accordance with the method differs from the prior art in particular in that the resins used are not cured.
  • the resin used can be found in the product unchanged or almost unchanged by means of a chemical analysis. So there has been no chemical conversion and no or practically no chemical crosslinking.
  • the plate produced at sufficiently low temperatures can be used in particular as a semi-finished product.
  • this is fed to a press in a known manner together with decorative paper, backing paper and other components of a laminate floor. Now is pressed at temperatures above 1 50 ° C, preferably above 180 ° C. The upper limit of the temperature has been reached if this leads to damage to the product. Not only are the papers connected to the plate, but the resins in the plate also harden. Overall, considerable costs are nevertheless saved, since a heating step is reduced or even avoided entirely.
  • a typical density of the plate produced according to the process is 650 kg / m 3 .
  • the plate should have been pressed so strongly that the density does not fall below 300 kg / m 3 , preferably 400 kg / m 3 , particularly preferably 500 kg / m 3 , in order to achieve a stable and thus easy-to-handle plate ,
  • the density of the plate is typically below 1000 kg / m 3 .
  • the board is pressed to the end product, for example a coated board for laminate floors, it can be compacted to above 1500 kg / m 3 , particularly preferably to above 2000 kg / m 3 .
  • the density is 2400 kg / m 3 .
  • the proportion of resin in the panel is, for example, 7.5 percent by weight if the panel produced is to be used as a floor in the form of panels.
  • the resin content for door leaves is typically 2.5 percent by weight.
  • the hard content should not exceed 35 percent by weight.
  • the limit of about 10 percent by weight of resin should not be exceeded.
  • a lower limit at which the method still works is about 1 percent by weight.
  • Reactive resins are used as resins, i.e. resins with components that can chemically build up a network.
  • reactive resins are: solid or liquid phenol resins, Amino resins such as urea resins, melamine resins, acrylic resins, epoxy resins and / or polyester resins.
  • wood chips consisting of wood can first be separated into solid and liquid components.
  • the solid wood components are dried and provided with glue, i.e. reactive resins.
  • the solid wood components provided with glue are pressed into a shaped body, for example a plate.
  • the liquid components include in particular lignin and hemicellulose. At the temperatures prevailing during drying, these substances cause emissions, which also lead to odor and thus environmental pollution. By separating these liquid components before drying, emissions during and / or after drying are reduced accordingly. The environment is correspondingly less polluted during plate production.
  • the liquid constituents are preferably disposed of and / or processed at temperatures at which only low emissions occur. If the temperatures of the liquid constituents are high, in particular above 90 ° C., the liquid constituents are kept in a gas-tight system with respect to the environment until the temperatures have dropped sufficiently.
  • the liquid constituents in particular lignin and hemicellulose, are used as glue, that is to say mixed with the dried solid wood constituents according to the invention.
  • the solid wood components are preferably processed into fibers or chips.
  • the liquid components can, for example, in a so-called agitator from the solid wood components are separated.
  • the abovementioned constituents which are obtained are typically 20 to 35% by weight of hemicellulose, 45 to 50% by weight of cellulose and 20 to 35% by weight of lignin.
  • the cellulose is an integral part of the wood.
  • wood chips are first placed in a stuffing screw. From the stuffing screw, the wood chips come into a cooking container in the compressed state and are cooked here under high pressure.
  • the cooking container is designed for high pressures.
  • the pressure in the cooking container is in particular at least 1.2 to 2.2 MPa (12 to 22 bar).
  • wood chips are usually cooked at pressures of only 0.8 to 0.9 MPa.
  • the thermal steam treatment separates the solid wood components (cellulose) from the lignin and hemicellulose, which are liquid components.
  • the cellulose is in solid form.
  • the other two components, lignin and hemicellulose are liquid and can basically be used as glue.
  • the adhesive force is mainly caused by the hemicellulose.
  • liquid components After the liquid components have been separated off, they cool down significantly and are only led out of the gas-tight system at relatively low temperatures and, for example, further processed, that is to say sprayed onto the fibers in particular via nozzles.
  • the liquid constituents have therefore clearly cooled, in particular by at least 30 ° C., preferably by at least 50 ° C., before they leave the system, which is encapsulated in a gas-tight and thus odor-tight manner. In this relatively cool state, the odor development is significantly lower. It is then not critical to remove the liquid components from the gas-tight system.
  • the liquid components can be used as glue. This is made possible in an environmentally friendly manner in that the liquid constituents of a wood only leave a gas-tight and thus odor-tight encapsulated system at low temperatures, in particular at temperatures significantly below 100 ° C., in particular below 70 ° C., particularly preferably below 50 ° C. and applied to the fibers in this cool state, for example. In this way it is possible to reduce environmental pollution in a particularly economical way.
  • the gas-tight system consists, for example, of the container and connected lines.
  • Another container, which is used for cooling, for example, can be part of the gas-tight system.
  • the glue is undesirably subjected to a temperature treatment when applied in accordance with the prior art. From approx. 80 °, glue is adversely loaded or activated. Activated glue can no longer be used in the subsequent processing step, in which the glued solid wood components are pressed into the board. The active part of the glue is reduced by the aforementioned prior art. Of the 22% by weight originally usually used, only 1 to 8% by weight are still ready for use when the fiber / glue mixture leaves the drying tube. According to the invention, glue is applied to solid wood components in a relatively cool state. This prevents premature, unnecessarily extensive activation of glue.
  • a glue based on formaldehyde-urea is currently used for HDF, MDF and chipboard. If boards are made for the floor area, melamine is added to the glue. This is to prevent swelling that can occur due to moisture.
  • the problem is that part of the glue is lost through the temperature treatment for the actual processing step. It is disadvantageous that much more glue has to be added to the fibers or the chips than is necessary to press the fibers or the chips in a press with the addition of temperature and thus achieve the desired result, for example the MDF board.
  • An MDF board can currently have about 60 kg of glue per m 3 . This amount can be significantly reduced if glue is applied in a relatively cool state.
  • the liquid portions of hemicellulose and lignin obtained in the manner described above are applied to the solid wood components as glue in a cooled or cool state. They can advantageously be mixed with another glue in the cooled or cool state. The other glue was therefore not obtained from liquid components of the wood.
  • the proportion of hemicellulose and lignin in the glue mixture thus provided is preferably not more than 20% by weight.
  • the mixture also contains, in particular, a glue based on formaldehyde-urea.
  • the glues used in the prior art can be used.
  • the solid wood components are first dried and then glue is mixed with the dried components at temperatures which are substantially below the drying temperatures, in particular below 100 ° C. This prevents the glue from being undesirably exposed to the relatively hot temperatures that occur during drying.
  • the glue also contributes to emissions in the prior art. Since this is no longer exposed to the hot drying temperatures, but instead is applied to the solid wood components at relatively cool temperatures, the glue comes from the glue Emissions also avoided. So only water but no chemicals are dried in the dryer or drying tube. This results in corresponding environmental advantages, since the dry air is not disadvantageously contaminated with vapors that come from the glue according to the prior art. The production of the panels is correspondingly more environmentally friendly. In addition, this embodiment has the advantage that portions of the glue are not disadvantageously activated during the drying process and are therefore no longer available for the actual gluing of the wooden components to the board.
  • the solid wood components which are in particular in the form of fibers or chips and which are dried, are advantageously not loaded with liquid components of the wood-based material and, in the aforementioned embodiment, also not with glue.
  • the corresponding liquid phases are not dried in the dryer. Compared to the prior art, considerable amounts of energy are saved. Saving energy not only results in considerable cost advantages, but also conserves natural resources and thus the environment.
  • the solid wood components are therefore fed to a belt scale before gluing solid wood components on one side using a circulating conveyor belt transported on the other side, they are weighed. This provides information on the amount of glue to be added to the solid wood components of the wood in the subsequent step.
  • the solid wood components are transferred to the subsequent facility using the belt scale. Possible weight fluctuations of the supplied solid wood components are recorded during transport, registered and saved in one embodiment. This data is processed and can serve as a control variable for the amount of glue that is subsequently applied to the solid wood components.
  • the transport speed in the belt weigher is controlled such that a uniform amount of solid wood components is fed to the subsequent gluing device (device in which the solid wood components are provided with glue).
  • the subsequent gluing device device in which the solid wood components are provided with glue.
  • the weight of the solid wood components which can be in the form of fibers or chips, can be carried out in the smallest steps and enables the solid wood components to be fed evenly with an accuracy of, for example, ⁇ 1%.
  • the gluing is therefore carried out in a mixer in which glue and solid wood components are mixed with one another.
  • the mixer has means for cooling its housing.
  • an at least partially double-walled housing for example a double-walled tube, is provided for this purpose, which is part of the housing of the mixer.
  • a cooled liquid such as chilled water, is passed through the double-walled housing to cool the mixer or its walls.
  • the cooling should create a layer of condensation on the inside of the walls.
  • the cooling must be designed accordingly.
  • the layer of condensed water ensures that solid wood components provided with glue do not stick to the walls and clog the mixer.
  • the solid wood components After the solid wood components have dried, they are distributed over a wide area in one embodiment of the invention and a type of curtain or mat is formed. This is particularly the case when the solid wood components are in the form of fibers, since a mat or a curtain can easily be formed from them.
  • Glue is then added, especially sprayed into the curtain.
  • An air-glue mixture is preferably sprayed in, in order to ensure that the glue is distributed as evenly as possible.
  • the formation of a curtain ensures that the glue is evenly distributed over the solid wooden components. This is particularly the case when the solid wood components are in the form of fibers.
  • a curtain or mat formed from solid wood components is introduced into the mixer.
  • the curtain or mat is then blown through nozzles with an air-glue mixture.
  • the glue is fed to the curtain or mat via the nozzles.
  • the curtain or mat is then preferably passed through the mixer without contact.
  • the glue is blown into the dried solid wood components of the wood together with air, in particular at a temperature of 40 to 70 ° C., preferably at a temperature of 55 to 60 ° C. This ensures that the glue reaches a dry outer skin. So it is activated minimally. This ensures that the subsequent mixture of solid wood components and glue does not stick to transport devices and equipment, for example inside the mixer.
  • the glue is swirled with heated air and this air-glue mixture is added to the dried solid wood components, for example fibers or chips.
  • the warm air which is introduced into the mixer together with the glue and the dried solid wood components, for example, activates the surfaces of the glue droplets generated in this way. This suitably counteracts the adherence of solid wood components to subsequent equipment, for example mixer walls. Otherwise, for example, the mixer would have to be cleaned in a very short time. The production would then be stopped disadvantageously. Unwanted cleaning costs are also incurred accordingly.
  • the free surface of the glue is further activated in an embodiment of the invention by a device suitable for this purpose, in order to facilitate subsequent processing steps.
  • a device suitable for this purpose in order to facilitate subsequent processing steps.
  • the solid wood components contaminated with glue therefore preferably get into a riser pipe, which is in particular 10 to 30 m, preferably about 20 m long.
  • the diameter of the riser pipe is in particular 1 to 4 meters.
  • the riser pipe is preferably also cooled and in turn is then, for example, double-walled in order to pass a cooling liquid between the two walls of a double wall.
  • the objective is again to form a condensation layer on the inside walls of the riser pipe so that the glued solid wood components do not stick to the walls.
  • the glued solid wood components can be passed through an air or gas stream in a particularly simple, contactless manner through the riser pipe.
  • the solid wood components especially if they are in the form of fibers, pass through the at a speed of at least 25 meters per second, preferably of at least 35 meters per second
  • Riser pipe should be passed through. If the speed is lower, fibers or chips remain stuck to the riser pipe despite the aforementioned measures. This would make the riser dirty unnecessarily quickly.
  • the riser had to be cleaned after only 8 hours. By setting a suitable speed, the cycles could be extended to 7 to 8 days. So the riser only had to be cleaned every week.
  • the maximum speed at which the solid wood components contaminated with glue are blown through the riser depends on the performance of the following components or devices. It must be taken into account here that the following components or equipment must be able to process the incoming amount of solid wood components. In practice, an upper limit of 40 meters per second could currently be easily achieved. From 50 meters per second, the following components used so far were overloaded. The upper
  • the speed limit can be increased as soon as more powerful downstream components are available.
  • the basic principle is that higher transport speeds in the riser pipe are an advantage, since then contamination problems and the associated downtimes in production are reduced accordingly.
  • the glue on the surface is further activated somewhat so that subsequent processing steps can be carried out appropriately.
  • the length of the riser pipe must therefore be adapted by the person skilled in the art to the desired degree of glue activation.
  • the specialist will at Take into account the transport speed in the riser.
  • the solid wood components which are contaminated with glue, enter a cyclone.
  • the glue has now been sufficiently activated on the surface due to the aforementioned measures so that it no longer adheres to the cyclone.
  • the solid wood components are separated in cyclones and transported to the next processing step with a means of transport such as a belt.
  • the solid wood components are separated from the air in cyclones.
  • the transport means guides the solid wooden components into a viewing device.
  • the solid wood components are examined for coarse components in the viewing device.
  • the coarse components are sorted out automatically. Coarse constituents are, for example, lumps of glue.
  • the solid wood components are transported from the viewing device to the press by means of a belt and pressed here to the board.
  • the press preferably consists of rotating press belts pressed against each other, which are suitably tempered. This means that pressing can be carried out continuously.
  • the temperature must be adjusted by the person skilled in the art to the glue used in each case. The amount of energy and the resulting temperatures for the two press belts are therefore selected differently in one embodiment in order to avoid warping in the plate produced. According to the invention, however, temperature control of the press can also be completely dispensed with.
  • the nozzles through which the glue is added to the solid wood components in one embodiment of the invention are preferred designed conical.
  • the glue then emerges in droplets through the cone tip, so that a uniform distribution of the glue is advantageously promoted, that is, improved.
  • the glue coming out of the nozzles for example, does not contact subsequent tools, such as tools in the mixer.
  • the glue is therefore preferably directed directly in the direction of the solid wood components, in particular sprayed, in order to achieve the most uniform possible distribution.
  • the distance between tools in the mixer and the nozzles should be at least 1 meter, preferably at least 2 meters, when the glue is injected horizontally.
  • the solid wood components are then introduced vertically at the start of the mixer and transported horizontally in this.
  • the specified distance values refer, of course, only to a specific individual case. They are not generally applicable, since ultimately the speed at which the glue emerges from the nozzles is also important.
  • an air stream is advantageously also available, with which the solid wood components are first blown and transported as contactlessly as possible through subsequent devices such as a mixer or a riser pipe.
  • another gas can be used instead of air.
  • mixing tools are used as tools in a mixer, which cause the solid wood components to mix with the glue.
  • the solid wooden components are brought in front of the nozzles in the form of a curtain. In addition to the advantages already mentioned, this prevents glue from spraying into the mixer and contaminating tools here. Otherwise, the solid wood components would adhere to the tools and the mixer would clog in a very short time and would have to be cleaned at short intervals.
  • the tools in the mixer are fastened to a centrally installed axis and consist of rods which protrude in a star shape and which, like a rudder blade, pass into a flat area.
  • a star is formed from, for example, four tools. Two tools form an angle of 90 °.
  • the rudder blades are tilted compared to the air flow that flows through the mixer. This results in a swirling of the air and thus a thorough mixing of the solid wood components with the glue.
  • Several "stars" formed by tools are attached to the axis at regular intervals. The solid wooden components are then transported through the mixer parallel to the axis.
  • the tools are designed in such a way that air is swirled next to the solid wooden components or propeller-like tools are therefore preferable.
  • a curtain is preferably produced from the solid wooden components as follows.
  • a means of transport for example a conveyor belt or a belt scale, is provided at the end with at least one, preferably with a plurality of rollers.
  • the solid wood components are passed through the roller (s).
  • the rollers are pressed against each other in particular. If there is a gap between two rollers or a roller and an adjacent surface, this is basically harmless. This ensures that a kind of curtain or mat is formed from the solid wood components by the rollers. So the curtain shape is created by the rollers.
  • a conveyor belt is preferably used, since this ensures a uniform supply of solid wood components, which are in particular wholly or predominantly in the form of fibers, to the rollers. If a belt scale is used, in one embodiment the speed of the feed to the rollers is controlled so that a particularly constant amount of solid wood components is fed to the rollers.
  • screws are regularly used to transport solid wood components in the manufacture of panels. Solid wood components leave snails relatively unevenly. The result would be a correspondingly uneven curtain made of solid wooden components.
  • a uniformly thick and wide curtain is advantageous in order to achieve an even glue distribution. It also ensures that the curtain reliably separates injected glue from subsequent tools.
  • rollers are used, through which the solid wooden components are passed to produce a curtain.
  • the rollers are preferably arranged offset one above the other in such a way that an acute angle of the rollers is enclosed by a means of transport, for example a conveyor belt or the belt scale.
  • a means of transport for example a conveyor belt or the belt scale.
  • the opening through which the curtain consisting of the solid wooden components in one embodiment is guided in or in front of the mixer preferably corresponds to the maximum width of the mixer housing, that is to say, for example, the diameter of the tube mentioned, which also forms the walls of the mixer. This ensures that the entire width in the mixer is covered by the curtain. Otherwise, glue could splash into the interior of the mixer past the remaining openings on the side of the curtain, and the aforementioned
  • the side walls of the mixer are preferably cooled to 7 to 15 ° C, in particular 10 to 12 ° C. In this way, a layer of condensation is deposited on the walls. The condensation layer prevents sticking.
  • the temperatures mentioned are also suitable for the formation of a condensation layer on the inner walls within the riser pipe.
  • the nozzles for feeding in glue are at a distance from the housing of the mixer.
  • the nozzles are then located in front of an opening in the mixer housing. This leaves a gap or annular gap between the nozzles and the opening, through which air is entrained and can be suitably supplied.
  • the air which is introduced via the gap or annular gap can be preheated in order to provide a desired temperature in the mixer, in particular in order to promote a desired activation of the glue on the surface.
  • tools inside the mixer are mounted on an axis.
  • the nozzles for feeding in glue are then arranged in a ring around the axis, including fibers evenly with glue.
  • the fibers or the curtain consisting of fibers are then preferably fed perpendicular to the axis between nozzles and tools.
  • nozzles are arranged in a ring in one or more rows. With a correspondingly large diameter, the entire opening of the mixer is sprayed with glue by arranging a second row of nozzles in a ring around the axis.
  • glass fibers or plastic fibers are additionally added to the fibers consisting of solid wood components.
  • the addition takes place in particular in or immediately before the mixer.
  • plate-like molded parts can be produced particularly well, which are provided, for example, as interior trim in a car.
  • Such shaped panels can be used in the automotive industry, for example, as a rear shelf. It is then sufficient to simply pre-press the layer system. A final pressing step does not have to be carried out.
  • the automotive industry does not need as many molded parts as fibers are usually economically manufactured on a large industrial scale. It is therefore more economical to produce molded parts, which are used in particular in the automotive industry, together with MDF boards (intended for the production of panels) in order to be able to use the fiber quantities on an industrial scale.
  • the wood fiber panels intended for the production of panels have an upper side and an underside which run parallel to one another and which are flat. These plates are a few millimeters thick. As a rule, they have no plastic or glass fibers, since no special shapes have to be realized that deviate from a flat surface. Sharp edges are problematic in the production of molded parts, as taught, for example, by the German trade magazine HK 3/88 on page 278. Sharp edges tend to tear open. Such problems are avoided or significantly reduced by reinforcement with glass fiber or plastic fibers.
  • Molded parts of the aforementioned type are also used in the furniture industry. Such molded parts are, for. B. needed for doors that are specially shaped for design reasons.
  • the molded parts In contrast to panels made of fibers, for example MDF or HDF panels, which are used as a carrier panel for panels for floors, it is sufficient for the molded parts to simply pre-press them.
  • the pre-pressing takes place at much lower pressures than the actual pressing step.
  • the prepress pressure can only be 1/3 of the pressure that is used for the actual pressing step.
  • the actual pressing step can be carried out at pressures of 75 to 80 kg / cm 2 .
  • the proportion of glass fibers and / or plastic fibers in a molded part is up to 25% by weight, preferably up to 15% by weight, in order to achieve inexpensive results. At least 1% by weight, particularly preferably at least 5% by weight, of glass fibers should be used.
  • Branching off wood fibers for the production of molded parts from the wood fibers used for the production of MDF or H DF panels for panels, in particular for floor panels, is also particularly economical in comparison to the state of the art, regardless of the other measures and features mentioned here Technology.
  • solid wood components provided with glue are arranged in layers, for example on a conveyor belt, and subjected to hot steam, for example by means of a steam boost. The layer is then pressed into the plate in a press - for example within two rotating belts pressed against each other.
  • the invention is particularly well suited for the production of fiberboard.
  • the two outer main surfaces of the layer are vapor-deposited. This can be done simultaneously with a pre-pressing or compression of the layer.
  • a pre-pressing or compression of the layer For example, by means of a vapor-permeable conveyor belt, the layered solid wooden components are transported between two rigid panels. One plate is then below the conveyor belt and the other above the conveyor belt. The distance between the two plates can decrease in the direction of transport so that the layer is compacted as a result.
  • Steam is applied to the layer via nozzles in the plates. The moisture in the surface area of the layer is then increased in particular by at least 2% by weight, for example up to 4% by weight and thus for example from 7% by weight to 9 to 11% by weight.
  • the temperature of the steam is typically 100 to 130 ° C.
  • the vapor conductivity increases the thermal conductivity to the middle of the layer. Overall, this results in better pressing behavior and thus a reduction in the pressing time.
  • the layer or the already compacted layer of solid wood components provided with glue can be divided, so that, as it were, two layers one above the other available.
  • the layer is transported on a conveyor belt for this purpose.
  • a belt or a rail is arranged above and across the conveyor belt in such a way that it divides the layer on the conveyor belt.
  • An evaporation device adjoins the belt or the rail and is located between the two layers in this way.
  • the adjacent sides of the two layers created by division, or at least one of them, is steamed as described above, in order to enable faster pressing times. Following this vapor deposition, the upper layer rests on the lower one.
  • the steamed layers are transported to the press and pressed to the plate.
  • the vaporization means that direct or indirect rapid heating of the fibers provided with glue is achieved immediately and / or during pressing.
  • the panels When manufacturing floor panels, it is of interest that the panels have hard outer layers and a soft inner layer. In this way, for example, the impact sound can advantageously be reduced.
  • the surface If the surface is specifically steamed and the interior remains relatively dry, the surfaces are pressed in a targeted manner.
  • moist material can be pressed better than dry material. Surface areas are thus compacted in a targeted manner.
  • the pre-steaming also makes it possible to control the temperature profile. This makes it possible to achieve harder outer layers in comparison to the middle layer.
  • the desired hard surfaces are further improved if the surfaces are steamed before pressing. If there are harder outer layers, these can be relatively thin. This means that material can be saved overall with the same panel thickness, since the soft middle layer is made from comparatively little material.
  • FIG. 1 shows a section through a belt scale 1 and a subsequent mixer 2. As indicated by the arrow 3, dried fibers, which were produced from wood chips, are fed to the belt scale 1 via an opening in a housing 4. A slope 5 directs the incoming fibers onto the belt of the belt scale.
  • the belt scale detects and controls the amount of material that is transported in the direction of the three rollers 6.
  • the three rollers 6 are arranged one above the other and offset such that they enclose an acute angle alpha with the belt scale 1.
  • the fibers on the belt scale enter this acute angle. They pass through the rotating rollers 6.
  • a curtain is formed from the fibers, which, due to gravity, is transported vertically downwards along the arrow 7. The curtain thus enters the mixer 2 between a plurality of nozzles 8 and tools 9.
  • the mixer consists of a tubular housing.
  • the housing is formed by a double wall 10 and 1 1.
  • An axis 12, on which the tools 9 are fastened, is arranged centrally in the interior of the housing.
  • a tool 9 forms a right angle with the axis 1 2.
  • the front area, into which the curtain consisting of fibers is inserted, is free of tools. This ensures that there is a sufficiently large distance between the tools 9 and the nozzles 8. This distance is provided so that glue emerging from the nozzles 8 does not strike the tools directly during operation.
  • the diameter of the mixer housing corresponds to the width of the opening through which the fiber curtain is introduced into the mixer.
  • the width of the curtain is adapted to the width of the opening.
  • the nozzles 8 are arranged in a semicircle around the axis 1 2 in an upper area. This has the effect that on the one hand the curtain is evenly provided with glue and on the other hand the glue emerging from the nozzles 8 does not directly hit parts of the mixer.
  • a distance is arranged between the nozzles 8 and the housing 10, 11 so that a kind of annular gap is formed. Air is sucked in through this annular gap. Means for heating the air that is drawn in are not shown. This creates a glue-air mixture.
  • the curtain provided with glue (in other words a mat made entirely or predominantly of fibers) is transported by the air flow parallel to the axis 12 through the mixer 2.
  • the axis rotates during transport and thus the tools 9.
  • the glue is further mixed with the fibers.
  • a cooled liquid is introduced between the two walls 1 0 and 1 1 of the double wall in order to allow a layer of condensation to form on the inside of the mixer on its inside walls.
  • FIG. 2 shows a top view of the mixer parallel to axis 12. For reasons of clarity, only two tools 9 are shown. Using Figure 2 in particular a single-row, semi-circular arrangement of the nozzles in the upper area illustrates.
  • Hardwood or softwood in the form of trunks, branches and / or sawmill and industrial wood are used as the starting material.
  • the wood is first shredded into chips with a size of approximately 20 x 5 mm in a shredding device 31. These schnitzel can also come directly from the forest or from sawmills. They can be sieved to separate particles that are too small or too large. If the chips are the right size, they can be washed to remove foreign objects (especially sand and earth). In this way, cutting and other tools are spared and not damaged in the later manufacturing and processing process.
  • the wood components are fed from the shredding device 31 and from the silo 32 to a funnel-shaped pre-steam container by means of conveyor belts.
  • the feed is typically in the ratio of about 6: 4 (60% by weight of chips, 40% by weight of sawdust). In this way, sawdust is also used. This further reduces costs. Resource resources are conserved. The proportion of chips should predominate, since this creates fibers and later fiber mats that stabilize mechanically. There is therefore no lower limit for the sawdust content.
  • the wood components are mixed, pre-steamed and heated to 60 to 70 ° C.
  • the wood components are then fed to a cooker 34, for example by means of a stuffing screw.
  • the wood components are cooked in the cooker 34 for about 2 to 3 minutes at a pressure of 1 1 to 1 6 bar and a temperature of 1 40 to 1 80 ° C. Pressure and temperature are selected so that they split into liquid and solid wood components.
  • the liquid constituents are separated from the solid and fed to a line 36 which is connected to the cooker 34 in a gastight manner.
  • the solid wood components are fed to a fiberizing machine 36 (refiner or defibrator).
  • the defibrator 36 typically includes a stator and a rotor that are driven by a motor.
  • the solid wood components are broken down into fibers.
  • the fibers which are mixed with sawdust in one embodiment, are pneumatically fed to a drying tube 37.
  • fibers are spoken of independently of this.
  • the fibers are dried in the drying tube 37 at 160 to 220.degree. Drying is relatively quick and inexpensive because the liquid wood components have already been removed.
  • the fibers reach cyclones 38 from the drying tube. Here the steam is separated. The fibers are led downwards. The temperature of the fibers is then typically 50 ° C. The fibers are then mechanically glued in gluing devices 39 at comparatively cool temperatures. The subsequently glued fibers typically have a temperature of 35 to 40 ° C. The glued fibers enter one or more sifting devices 40.
  • the sifting devices 40 comprise heating devices in order to heat the fibers to 55 to 60 ° C. Increasing the temperature is advantageous if the plates are to be pressed at temperatures of 80 ° C, for example. The pressing step can be accelerated in this way since the desired temperature does not have to be reached exclusively by means of the heated press. Shorter press times lead to larger production capacities or lower acquisition costs for the presses with rotating belts, since these can then be shorter. The space requirement for such presses is also less. This further saves costs.
  • the pre-glued fibers are fed to one or more separation devices 41. Of the
  • Separation devices 41 bring the pre-glued fibers to a scattering station 42.
  • the scattering station 42 puts the pre-glued fibers on a conveyor belt.
  • the conveyor belt leads the fibers to a pre-press 44.
  • the pre-press comprises circulating belts, between which the fibers are fed and thereby pressed.
  • the fibers then pass through a forming line 45 which has various facilities which ensure that the fibers are in the desired shape.
  • the molding line leads to an evaporation device 46.
  • the fibers are evaporation from above and / or below.
  • the fibers can be split parallel to the conveyor belt and thus steamed inside.
  • the fibers finally reach the main press 47, which consists of two rotating steel belts pressed against each other.
  • the pressing takes place, for example, at 80 ° C.
  • the plates are then sawn by means of a sawing device 48 and fed to a holding device 49.
  • the plates are held so that they do not touch.
  • the plates are cooled in this way.
  • the separated liquid constituents which were fed to line 35, are cooled within the gas-tight system. If these liquid components have been cooled sufficiently, they are either disposed of or fed to the gluing device 39.
  • the panels are further processed into panels, for example.
  • the plates are then coated with papers, for example, and the layer system is fed to a press.
  • the layer system is pressed in the press at temperatures above 150 ° C., for example at temperatures between 180 ° C. and 230 ° C.
  • the resins used then harden.
  • the panel is sawn further and provided with coupling elements by milling.
  • the panels can serve as a covering for walls or floors. If these are used as flooring, the panels are provided with an abrasion-resistant, transparent layer on the top of the decor.

Landscapes

  • 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)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention concerne un procédé pour réaliser un élément structurel obtenu à partir de fibres de bois, de copeaux de bois et/ou de sciure, notamment un panneau, le procédé comprenant les étapes suivantes : application de colle sur les fibres de bois, les copeaux de bois et/ou la sciure ; compression des fibres de bois, des copeaux de bois et/ou de la sciure ayant reçu la colle, pour former l'élément structurel, notamment le panneau.
EP02807596A 2002-07-10 2002-12-24 Technologie de presse mdf Expired - Lifetime EP1519818B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20210718U 2002-07-10
DE20210718U DE20210718U1 (de) 2002-07-10 2002-07-10 MDF-Presstechnologie
PCT/EP2002/014751 WO2004007159A1 (fr) 2002-07-10 2002-12-24 Technologie de presse mdf

Publications (2)

Publication Number Publication Date
EP1519818A1 true EP1519818A1 (fr) 2005-04-06
EP1519818B1 EP1519818B1 (fr) 2005-12-07

Family

ID=7973064

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02807596A Expired - Lifetime EP1519818B1 (fr) 2002-07-10 2002-12-24 Technologie de presse mdf

Country Status (11)

Country Link
US (2) US20030127763A1 (fr)
EP (1) EP1519818B1 (fr)
CN (1) CN1638928A (fr)
AT (1) ATE311965T1 (fr)
AU (1) AU2002356782A1 (fr)
CA (1) CA2491656C (fr)
DE (2) DE20210718U1 (fr)
EA (1) EA007082B1 (fr)
ES (1) ES2253587T3 (fr)
PL (1) PL372604A1 (fr)
WO (1) WO2004007159A1 (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMO20010033A1 (it) * 2001-02-23 2002-08-23 Imal Srl Metodo ed apparecchiatura per aggiungere collante ad un flusso di materiale legnoso incoerente
PL1680264T3 (pl) * 2003-11-07 2009-08-31 Formfiber Denmark Aps Urządzenie rozprowadzające włókna do suchego formowania wyrobu włóknistego
DE20318290U1 (de) * 2003-11-26 2004-04-01 M. Kaindl Antistatisches Papier nebst Paneel
ITMO20040127A1 (it) * 2004-05-25 2004-08-25 Imal Srl Procedimento di incollaggio di frammenti o trucioli di legno per osb e apparato di incollaggio relativo.
DE102006058612A1 (de) * 2006-12-11 2008-06-19 Fritz Egger Gmbh & Co. Optimierte Trägerplatte
DE102007012691B4 (de) * 2007-03-13 2016-05-12 SWISS KRONO Tec AG Verfahren zur Herstellung von Platten aus Holzfasern und nach diesem Verfahren hergestellte LDF-, MDF- und HDF-Platten
DE102008022841B4 (de) * 2008-05-08 2010-03-04 Kronotec Ag Verfahren und Anlage zur Herstellung von Spanplatten
CN101642924B (zh) * 2008-08-08 2011-09-14 仇峰 一种重组木及其制造方法
CN102555003B (zh) * 2012-01-11 2015-08-05 宁波大世界家具研发有限公司 一种木纤维复合材料制作的整体式木门
KR20140148033A (ko) * 2013-06-21 2014-12-31 (주)엘지하우시스 생분해성 수지 및 목분을 포함하는 판재 및 이의 제조방법
CN105233955B (zh) * 2015-11-10 2018-06-22 张沙 复合材料初加工装置及工艺
CN106087245A (zh) * 2016-07-01 2016-11-09 宁波华翔自然纤维科技有限公司 一种纤维毡材料及其制备方法和应用
CN106079027B (zh) * 2016-08-23 2018-03-27 辽宁蓝亿实业有限公司 一种增强板材隔音效果的中密度板制作方法
RU2755311C1 (ru) * 2018-05-30 2021-09-15 Ксило Текнолоджиз АГ Способ изготовления древесноволокнистой панели
CA3127353A1 (fr) 2019-02-15 2020-08-20 Owens Corning Intellectual Capital, Llc Composite fibre de bois-verre
AU2020258486A1 (en) * 2019-04-18 2021-12-02 SWISS KRONO Tec AG Method for coating a planar workpiece
DE102019114039A1 (de) * 2019-05-26 2020-11-26 Dieffenbacher GmbH Maschinen- und Anlagenbau Vorrichtung zur Beleimung von Partikeln im Zuge der Herstellung von Werkstoffplatten und ein Verfahren zum Betreiben der Vorrichtung
WO2023217378A1 (fr) * 2022-05-12 2023-11-16 Dieffenbacher GmbH Maschinen- und Anlagenbau Procédé, installation et étape d'expansion pour une installation pour la production de planches et planche

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1213385C2 (de) * 1960-01-16 1976-01-15 Draiswerke Gmbh, 6800 Mannheim Mischmaschine
DE1956898C3 (de) * 1969-11-12 1979-10-11 Draiswerke Gmbh, 6800 Mannheim Verfahren und Anlage zum Herstellen eines kontinuierlich mit Bindemitteln gemischten Gutstromes aus span- und faserartigen Stoffen
US4056342A (en) * 1973-07-18 1977-11-01 Champion International Corporation Fiberboard manufacture
US4058580A (en) * 1974-12-02 1977-11-15 Flanders Robert D Process for making a reinforced board from lignocellulosic particles
SE434931B (sv) * 1982-05-06 1984-08-27 Casco Ab Forfarande for framstellning av spanskivor
DE3629586A1 (de) * 1986-08-30 1988-03-10 Kunnemeyer Hornitex Verfahren zur herstellung von holzfaserplatten
DE3914780C2 (de) * 1989-05-05 1997-12-04 Mende & Co W Einrichtung zur kontinuierlichen Herstellung einer endlosen, dünnen Spanplattenbahn sowie Verfahren zum Lackieren einer mit einer Papierbeschichtung versehenen Oberfläche dünner Spanplatten
SE502272C2 (sv) * 1994-01-28 1995-09-25 Sunds Defibrator Ind Ab Förfarande för framställning av lignocellulosahaltiga skivor
US5554330A (en) * 1995-01-31 1996-09-10 Isoboard Enterprises Inc. Process for the manufacturing of shaped articles
IT1274565B (it) * 1995-05-24 1997-07-17 Cmp Spa Incollatrice per impianti di produzione di pannelli in fibra di legno,e impianto utilizzante tale incollatrice
SE504638C2 (sv) * 1995-07-27 1997-03-24 Sunds Defibrator Ind Ab Förfarande för framställning av lignocellulosahaltiga skivor
DE19640593A1 (de) * 1996-10-01 1998-04-09 Fraunhofer Ges Forschung Verfahren zur Herstellung organischgebundener Holzwerkstoffe
DK176116B1 (da) * 1997-03-18 2006-08-14 Wesser & Dueholm Fremgangsmåde til fremstilling af spånplader, fiberplader og lignende
US6596209B2 (en) * 2000-08-10 2003-07-22 California Agriboard Llc Production of particle board from agricultural waste
DE10054162A1 (de) * 2000-11-02 2002-05-16 Wacker Polymer Systems Gmbh Verfahren zur Herstellung von Holzpressplatten

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004007159A1 *

Also Published As

Publication number Publication date
DE20210718U1 (de) 2003-02-20
WO2004007159A1 (fr) 2004-01-22
EA200401559A1 (ru) 2005-06-30
CA2491656C (fr) 2007-09-11
US20030127763A1 (en) 2003-07-10
EP1519818B1 (fr) 2005-12-07
CA2491656A1 (fr) 2004-01-22
DE50205236D1 (de) 2006-01-12
EA007082B1 (ru) 2006-06-30
ES2253587T3 (es) 2006-06-01
US20060127659A1 (en) 2006-06-15
PL372604A1 (en) 2005-07-25
AU2002356782A1 (en) 2004-02-02
ATE311965T1 (de) 2005-12-15
CN1638928A (zh) 2005-07-13

Similar Documents

Publication Publication Date Title
EP1519818B1 (fr) Technologie de presse mdf
DE2845112C3 (de) Verfahren und Anlage zur Herstellung von Matten aus zellulosehaltigen Fasern und Verfahren zur Herstellung von Formteilen aus diesen
EP2476526B1 (fr) Méthode et appareil pour la fabrication d'un aggloméré de fibres ou de copeaux
DE202020104647U1 (de) Holzfaserplatte und entsprechende Herstellungsanlage
DE29880083U1 (de) Vorrichtung zum Beleimen von Fasern
EP3615288B1 (fr) Procédé de fabrication de panneaux de lamelles orientées osb à faible émission sur des composés organiques volatils (cov)
EP1663593B1 (fr) Encollage haute pression dans un melangeur de fibres
WO2003013809A1 (fr) Panneau realise dans un materiau derive du bois et de production ecologique
DE2023659A1 (en) Dried raw material treatment to impregnate with a sprayable binder
EP1414629B8 (fr) Panneau realise dans un materiau derive du bois et de production ecologique
EP2939807B1 (fr) Procédé et dispositif de fabrication d'un panneau de fibres de bois
DE10116686C2 (de) Verfahren zur Aufbereitung von Stroh und anderen Einjahrespflanzen für die Herstellung von Faser-, Span- und Dämmplatten sowie Wandelementen und anderen Formteilen und Verfahren zur Herstellung von Faser-, Span- und Dämmplatten sowie Wandelementen und anderen Formteilen
EP3470191B1 (fr) Procédé et dispositif destinés à la fabrication d'une plaque en matériau dérivé du bois
DE20305236U1 (de) Vorrichtung zum Bedampfen
EP4122662B1 (fr) Procédé de fabrication de panneau fibreux à émission réduite de cov
DE202005020890U1 (de) Holzfaserplatte
EP4408632A2 (fr) Dispositif et procédé de traitement de bois de récupération, en particulier pour la fabrication de panneaux de matériau
EP4408633A2 (fr) Installation et procédé de fabrication de panneaux de matériau
Irle The main process stations in a Particleboard production line (Metso Panelboard).
DE102015111431A1 (de) Trocknungs- und Beleimungsvorrichtung für lignocellulose-haltiges Material
DE19947856A1 (de) Faserplatte sowie Verfahren zur Herstellung von Faserplatten
CH363792A (de) Verfahren zur Herstellung von oberflächenveredelten Holzfaser-Hartpresslingen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20041129

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

DAX Request for extension of the european patent (deleted)
AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SI SK TR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051207

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051207

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051207

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051207

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051207

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051207

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051207

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: AMMANN PATENTANWAELTE AG BERN

Ref country code: CH

Ref legal event code: EP

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051224

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20051207

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051231

REF Corresponds to:

Ref document number: 50205236

Country of ref document: DE

Date of ref document: 20060112

Kind code of ref document: P

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060207

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060307

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060307

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060307

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060307

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2253587

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20060908

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20081230

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20081211

Year of fee payment: 7

Ref country code: PT

Payment date: 20081222

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20081222

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20090120

Year of fee payment: 7

Ref country code: FR

Payment date: 20081212

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20090102

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20081224

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20090112

Year of fee payment: 7

BERE Be: lapsed

Owner name: *KRONOSPAN TECHNICAL CY

Effective date: 20091231

REG Reference to a national code

Ref country code: PT

Ref legal event code: MM4A

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 20100624

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100624

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20091224

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091224

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20100831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091231

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091231

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091231

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091224

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091224

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20110401

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110322

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091225

Ref country code: TR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110726

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20081203

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091224