WO2012119995A1 - Method and system for producing a material panel, in particular a high-density material panel, and material panel - Google Patents

Abstract

The invention relates to a method and system for producing a material panel, in particular a high-density material panel, from wood or wood-like raw materials and/or from plastics. According to the invention, at least one bamboo layer (24) and at least one shaving layer (23) spread directly or indirectly from a spreading device (8) onto a conveying means are provided on the conveying means in such a way that a stack (27) of at least one bamboo layer (24) and one shaving layer (23) is formed on the conveying means in the specified sequence, and the stack (27) is then compressed with or without the conveying means in a press by means of pressure and/or heat to form a material panel. The invention further relates to a material panel having a density greater than 800 kg/m³, comprising an odd number of at least one shaving layer (24) spread in an oriented manner and at least one bamboo layer (23), wherein each layer has an orientation of the fiber direction different from at least one adjacent layer.

Description

 Method and plant for producing a, in particular high-density

Material plate and a material plate

The invention relates to a method for producing a, in particular high-density, material plate from wood or wood-like raw materials according to the preamble of claim 1. Further, the invention relates to system for producing a, in particular high-density, material plate according to claim 6 and to a material plate according to claim 1 1. For the production of wood-based panels are usually

discontinuous floor presses and continuously operating presses, wherein in the latter between two rotating steel belts a scattered pressed material mat with glued scattering particles under pressure and

Heat input is pressed. In addition to pure particle boards (MDF), chipboard wood chips are also used, which are usually spread in an oriented manner in order to increase the strength and strength of the wooden boards produced in their length and width. This will be production methods

distinguished for oriented scattered plates in the longitudinal and transverse direction (OSB) and in an orientation purely in the longitudinal direction (OSL). Usually, such OSB and OSL boards are produced on continuous double belt presses with densities of up to 750 kg / m ³ . Experiments with different pressing methods to increase the densities to over 750 kg / m ³ , have not always been successful, since the still warm plates after leaving the Press open or subject to excessive springback, so that the plate thickness increases sharply, causing the plate density drops significantly again. Under a high-density material plate, the invention densities of over 750 kg / m ³ , preferably of over 800 kg / m ³ . The invention further refers to an adhesive or binding agent, a so-called adhesive fleet, which consists in its main component of an adhesive. Depending on requirements, in addition emulsion, hardener, formaldehyde scavengers, dyes, insect repellent and antifungal agents and other additives are added. It is also common to use the adhesive without additives. The adhesive used is preferably MDI (diphenylmethane diisocyanate) or PMDI (polymeric diphenylmethane diisocyanate) from the group of isocyanates, which is particularly suitable for use with steam.

Of far-reaching economic importance in this context is the desire for high-density material plates, in particular from oriented scattered chipboard, in the container industry for ship, storage, office or residential containers. A specification of the Chinese industry for

Container plates writes a bending strength of 69 N / mm ² at one

Support distance of 250 mm for 28 mm thick container floors. European industry requires higher bearing distances compared to bending strength tests, which also leads to higher bending strengths. However, the smaller bearing distance of 250 mm leads to very high shear stresses in the neutral fiber of the plate during the bending test. When So far, panels for container floors are mainly used plywood panels with densities around 900 kg / m ³ . In addition to the high bending strength, the plate surface must have sufficient hardness and sufficient

Have abrasion resistance. In addition, the load which is applied to the plate by means of a wheel, for example from a forklift, must be sufficiently distributed in the plate longitudinally and transversely to the wheel via the supports of the plate grooves on the container floor.

Due to these high requirements, it has not been possible to produce a slab of pure chips (oriented and scattered wood chips) that meets the requirements of container construction. On the other hand, it is urgently searched for a replacement for plywood panels, because the required veneers for a plywood panel are expensive and in addition an impregnation of veneers with fungicides (fungicides) is difficult. Since a high percentage of containers are shipped on container ships worldwide, many of these container plates are subject to a high

Humidity in poorly ventilated rooms, which is also a

regular replacement of container panels conditionally. A container plate that is already resistant to production or offers a higher resistance against mold and fungus attack would be quite advantageous here.

The current production of plywood, especially on the basis of tropical woods, is now no longer capable of growth and long-term even sinking, as resources are now scarce.

In particular, it is now very difficult to obtain peelable logs, ie logs of sufficient diameter, in order to produce plywood with densities above 800 kg / m ³ from their veneers.

For a long time it has been known to pass through these tropical woods

To substitute bamboo strips, as described for example in CA 2,479,559 A1. In this case, a multilayer wood-based panel, in particular for use as a container floor, prepared in which on the surface sides of an already fully cured material plate from oriented scattered chips or veneers one or both sides a layer of bamboo veneers is glued. Here, the bamboo veneer layer may already be cured or bamboo mats are glued in braided or woven form and with the already manufactured and finished

Middle layers pressed together to obtain a container bottom plate.

CA 2,638,079 A1 further discloses a process for the production of

Containerbodenbelägen has become known in which a Schnitzelplatte is used as a middle layer, wherein the Schnitzelplatte is produced in a given manufacturing process and has a predetermined thickness of 24 mm, wherein the predetermined thickness is adjusted by grinding after curing and production of the plate and wherein on the surface side of the Schnitzelplatte be glued on, among other veneer layers with bamboo layers.

In particular, the latter presented manufacturing method has the disadvantage of a complicated manufacturing process, which is also in an unfavorable plant construction, in particular a complex

Warehousing and laborious grinding devices, precipitates. Not mentioned in these publications is that in particular the

Bamboo layers, consisting of high-density wood material, difficult to produce in uniform thickness and must consist especially in the presented manufacturing processes of material of excellent quality and uniformity. Next is disadvantageous that the

Bamboo layers a significantly different thermal expansion and

Swelling behavior as the adjacent Schnitzel or veneer layers, so that in particular in overseas containers with regularly changing climatic requirements of the demolition of the glued

Surface pages are preprogrammed from each other, since hardened and not more plastic layers must be glued together. Also extreme grinding specifications must be provided, because on the one hand the

Middle layer plate to be cut to size and on the other after the gluing of the other layers again the surfaces of

The final product must be reground to obtain the specified dimensional accuracy of the standards. The invention has for its object to provide a method for manufacturing, with which it is possible to produce a material plate from a composite veneer strips, especially bamboo and, in particular oriented scattered, chips cheaper and more reliable process, preferably while avoiding large grinding allowances and optimal composite qualities. Next, a facility to be created, the

independently, but also for carrying out the method, suitable is a material plate made of a composite of veneer strips, in particular of bamboo wood and, in particular oriented scattered, shavings below

Consideration of the total system costs cheaper and more reliable to produce. Next is a material plate, in particular produced by the method and / or on this same system, from a composite of veneer strips, especially bamboo and, in particular oriented scattered, chips, created in the cost

Production is. In particular, an abrasion-resistant and shock-resistant surface and / or with a low tendency to swell should be produced on the surfaces of veneer strips and / or high-density bamboo material.

The task for the method is solved by that on a

Means of transport at least one bamboo layer and at least one of a scattering device directly or indirectly sprinkled on the transport means Schnitzelschicht is provided such that on the transport a stack of at least one bamboo layer and a Schnitzelschicht in formed predetermined sequence, and that the stack is then pressed with or without means of transport in a press by means of pressure and / or heat to a material plate. The task is solved for the system in that the system has:

- At least one transfer device for a bamboo layer and a

Scattering device for shedding chips to form a stack,

- At least one means of transport, in particular a screen belt, for the formation and transport of a stack of at least one bamboo layer and a Schnitzelschicht predetermined structure

 - A press for pressing the stack with or without means of transport by means of pressure and / or heat to a material plate.

The solution to the problem for a material plate having a density of more than 800 kg / m ³ is that it has at least an odd number of at least one oriented scattered chip layer and at least one bamboo layer, each layer having a different orientation of the fiber direction relative to the at least one adjacent layer ,

Experiments have already been carried out on pure chipboard

produce the same plate density as plywood, in particular

Plywood from tropical woods, the same bending strength and

Should have bending stiffness in the longitudinal direction. These attempts were very expensive and not always effective. The cause of the lower Flexural strength is probably in the slightly worse orientation of the chips compared to the veneers. In the chips, the grain is not always parallel to Schnitzelkante and the chips can not all

one hundred percent aligned parallel to the desired orientation.

The invention will now provide a method, a system and a material plate in which from chips and in particular veneer remnants of bamboo, the same bending properties can be achieved at the same density, as with material panels made of plywood.

The following advantages can be achieved with the solutions proposed according to the invention: A precise alignment of the veneer strips or the bamboo strips for the given direction of orientation can be carried out. The chips can be spread continuously, which causes less scattering errors and perfect weight per unit area along and across the production direction. For optimization, however, the chips are preferably scattered only in the longitudinal direction, since the quality of scattering is significantly better here than compared to a transverse scattering. Alternatively, the transverse scattering can be made significantly wider with a subsequent trimming at the longitudinal edges, in order to achieve the transverse spread of the chips to the quality of a longitudinal spread

introduce. It is alternatively a simple transport on the Siebunterlage of the stack formed in the press possible without undesirable

Shifts of the chips or veneer strips occur. The stack can be pressed with a screen belt, preferably in a cycle press, which allows easy evaporation and evaporation. The chips are directly together with the veneer strip layers, preferably with the

Bamboo layers, pressed, so that the handling and the complicated bonding with finished material plates, which must be ground beforehand, is eliminated. A material plate, which is produced according to the proposed solutions, has a nearly perfect orientation of

Veneer strips / bamboo strips and the schnitzel on and also one

uniform basis weight distribution. Overall, this results in high bending properties and / or densities of the material plates, which predestine them for use in container floor construction.

Veneer residues according to the invention mean that narrow strips of a lignocellulosic material, in particular the same density as tropical wood, are used. These are preferred according to the invention strips of

Bamboo stems, these strips are 10 - 100 mm wide and 300 - 3000 mm long. The thickness is 0.3 - 10 mm. In these strips, the fiber runs parallel to the edge of the bamboo strip. But it can also be used stripes of tropical veneers. These veneers could also be obtained from non-peelable strains of small diameter, for example by knives. Preferably, the two upper cover layers are constructed from these veneer strips in the material plate. The middle layer, or their layers, contribute less to bending strength along and consist of shavings. The cover layers should consist of one to five layers of bamboo strips on top of each other. It can also be arranged on the tension side of the plate more stripe layers on top of each other, as on the pressure side, which allows a one-sided strong pressure-resistant material plate, ideal for container floors, where usually go forklifts with high weights.

 An advantage of using the veneer strips, especially the

Bamboo strips, is that the orientation of the strip edge is possible with almost no deviation of the angle to the orientation direction. The strips can be connected by means of threads or other methods to a mat, preferably a bamboo mat. The length of the

Strip mat should correspond approximately to the width of the later plate. This is especially the case when the product-related material plate length is arranged transversely to the transport or the direction of production.

For example, a plate would be 8 by 4 feet and cut 4 feet in the direction of production. Generally or especially for this case, therefore, the bamboo layer should be oriented perpendicular to the direction of production, so that the chip layer (for example, a three-layer plate) is preferably oriented longitudinally (parallel to the production direction), which allows the high scattering qualities described when spreading the chips.

The plate can be ground after hot pressing and optionally coated. The veneer strips are preferably used as mats stacked. The length of the mats can be 5 - 30 m. In bamboo layers, the layers of bamboo half shells, preferably with

Twine to a mat are held together. These shells are in contrast to veneers in the longitudinal direction very stiff and can bend only slightly. For example, with a screen length of 20 m and a feed rate of 100 mm / sec, the cycle time for loading the screen with strip mats is just under 200 seconds. The screen should be coated with release agent. The acceleration distance is 1 to 10 times the sieve length.

Once the strands have been spread on the mat, the device can be used to freely draw the towing strip (length approx. 10 - 300 mm, across the feed) of the screen. Preferably, for this purpose, a separating cut is introduced into the stack, who carried out by means of two Besäumsägen, It would also be possible to put the towing bar by hand. Thereafter, the wire is accelerated and stopped again after accelerating to cover it with upper veneer strip mats. After the upper veneer strips have been placed on the Schnitzelschicht, the sieve can again

accelerate and is pressed in a hot press. This can be done in a continuous press or a cycle press, with or without steam injection. Since the mat lies on a sieve pad, it can be easily transported over transitions and simply fed to the press.

The invention understands the layer structure of a layer of bamboo or a layer of chips as follows: A layer of bamboo consists of bamboo strips, which are at least one layer next to each other or woven together, in the

Essentially the height of the layer results from the bamboo strip itself. Several layers of bamboo can be stacked on top of each other. The bamboo strips are usually formed in the longitudinal direction in the fiber direction and can be several meters long.

Due to the different material properties

(Schnitzel layer / bamboo layer), the fiber directions of adjacent bamboo and Schnitzelschichten should be the same.

A layer of schnitzel is not defined by the height of the individual

Schnitzel, but by the application of a variety of Schnitzel, which eventually give an overall height of the layer. It will be in one

Schnitzelschicht may be arranged several layers of chips, which differ by different orientations, for example in the usual three- or five-layer arrangement, with each adjacent layer usually has a different angle of scatter, for example, longitudinal, transverse, along the direction of production scattered layers.

In particular, a teaching of the invention is to be seen in the following combination: the deposit of the veneer strips, respectively the bamboo layers is carried out on a stationary conveyor belt, after an acceleration, the chips are scattered on a continuously moving conveyor belt, after the scattering is at a predetermined distance the Schnitzelschicht of the Removed conveyor belt and another veneer strip layer / bamboo layer is placed on the stationary conveyor belt. In particular, of course, the predetermined distances are defined by the length of the veneer strip layer / bamboo layer and / or when using screen belts with tow strips (for transporting and juxtaposing the screen belts) by the distance of the tow strips to each other. The tow strips are wider than the screen belts and preceded by the screen belts in the direction of production. Drive means are hooked into the drag strips to drive the screen belts in the production direction. In order to pull the screen belt wrinkle-free, they are made sufficiently rigid across the width. Optionally have the

Towing lanes mean out around at leading Siebbänderenden

hook. After the continuous spreading of the chips, the areas of the screen belts should be cleared, which have drag strips, so that preferably by means of a diagonal saw across the width of one or two cuts are made in the Schnitzelmatte to well defined edges of the pressed material and a free mat after removal of the To get schnitzel. Preferably, the towed strips are cleared with cutters or extractors of chips. Usually, the areas of the tow strips do not have veneer strip mats / bamboo strips.

Further advantageous measures and embodiments of the subject matter of the invention will become apparent from the dependent claims and the following description with the drawing. Show it:

 FIG. 1 shows the schematically illustrated production sequence of a production of a, in particular high-density, material plate, wherein a stack is formed on a sieve band from at least one bamboo layer and at least one oriented scattered chip layer,

 Figure 2 shows the continuing production process after stacking with

 Introduction of the stack formed according to Figure 1 in a continuous press for producing de material plate and subsequent separation of the wire of the material plate and return of the wire for stacking in Figure 1 and Figure 3 is a section through a preferred embodiment of a

 produced stack before pressing in a press, consisting of a wire belt as a means of transport two bamboo layers and an intermediate Schnitzelschicht, which in turn consists of three layers along, transverse and again longitudinally oriented chips.

FIGS. 1 and 2 show a schematic and exemplary production sequence for producing a high-density material plate from wood or wood-like raw materials. In this process, chips are prepared from the raw materials in a preparation and are glued with adhesive essentially and fed to a scattering device 8. The spreader 8 is in this Embodiment in the position in succession longitudinal, transverse and again along layers 28 on a transport, preferably a screen belt 5 to scatter. For this purpose, the scattering device 8 at least one

Scattering machine 9 for producing a transverse to the direction of production 25 scattering and / or at least one spreader 10 for

 Production of a lying longitudinally to the direction of production 25 scattering. The invention, when directed longitudinally or transversely, is essentially the orientation of the fibers of the chips which could be orientedly scattered. Of course, variations of the spreader 8 are conceivable, for example, with two double spreaders which may sprinkle both longitudinally and transversely simultaneously, or similar equivalent arrangements of the prior art.

For producing a stack 27 for pressing several variations are conceivable, which can be divided into two higher process categories: continuous and cyclic pressing in a press 19. For this purpose, it is also preferably provided that the scattering devices 8 operate continuously, as experience shows the highest quality Dispersion guaranteed. In the present embodiment of Figures 1 to 3 will now be to a continuous scattering and a continuous compression

received. The necessary means of transport can be an endless

be circumferential forming belt or a screen belt 5. The form band is usually not suitable to move with the material to be pressed through the press. If a wire 5 is used as a means of transport, this is usually introduced into the press 19. This has depending on the necessary layer structure of the materials to be pressed necessary reasons. On Siebbandumläufe or Siebbandanwendungen for continuous and cyclically operating presses 19 is made in detail on the prior art.

 The following is a stacking of Figure 3 on a wire belt 5 with two outer bamboo layers 23 and an inner

Core layer, consisting of a chip layer 24, again consisting of three layers 28, shown by way of example. The introduction of the bamboo layers 23 before (a) and after (b) of the spreader 8 are similar, so that this is described by way of example only in front of the spreader 8, but also with the corresponding reference numerals after the spreader 8, as follows:

The used and preferred bamboo strips are already supplied as finished mats on mat stack 26 and in suitable

Singling device 2, 14 introduced. The separating devices 2, 14 each lift a mat from the mat stack 26 and place it on a Beleimband 1, 13. The Beleimband moves the mat under a

Beleimvorrichtung 3, 15 and reaches with a glued surface a transfer device 4, 16. In order to create a bamboo layer of several mats, reverses the Beleimband 1, 13, moves the mat back into the area of the separating devices 2, 14 and there will be another mat placed on the glued surface of the previous mat. For the production of another layers, this process is simply repeated until the

Transfer device 4, 16, the bamboo layer 23 rests on the means of transport.

In the present embodiment, the bamboo layer 23 is now on the standing and from the Siebbandrücklauf 22 in the transfer area 17th

provided screen belt 5 is placed, while on the Beleimbänder 1, 13, the next mats can be placed. It is conceivable if the

Transfer device, 4, 16, in and against the production direction 25 is movable, the transfer of the bamboo layers 23 also continuously perform.

The screen belt 5 is now accelerated with the resting bamboo layer 23 on an acceleration section 6 until the speed V _S ieb the screen belt 5 is equal to the continuous production speed V _kon ti of the spreader 8 and / or the continuous press 19. When reaching the speed V _kon ti, plant technology, the speed V _kon ti can even be exceeded, and then after hooking in a

leading screen belt 5, to be adapted again, wherein a quasi-endless screen belt 5 is formed, that in the production speed 7 (Vsieb = Vkonti) is passed through the scattering device 8. By means of

Spreader 8 now three layers 28 are applied as Schnitzelschicht 24 on the lower and the Sieband 5 adjacent bamboo layer 23. According to the embodiment, with a spreader 9 only one layer 28 chips along, then with a spreader 10 a layer 28 chips across and then again with another spreading machines 9 a layer 28th

Schnitzel along the direction of production 25 applied. The from the

Spreader 8 emerging and upwardly uncovered surface side of the chip layer 24 can now, although already glued Schnitzel form the surface of the chip layer 24, again glued with a gluing device 1 1. In particular, when a bamboo layer 23 is to be placed on the chip layer 24 in the further course, in order to ensure time for a cyclic, respectively slowed or standing application of the bamboo layer 23 in the transfer area 17 (area b after the spreader 8), the screen belts 5 again separated from each other and by means of a

Acceleration section 12 spaced from each other. For this purpose, it may be provided that by means of suitable devices (not shown) the

Towing strips of the sieve belts 5 are freed from the scattered chips. This can be done by means of at least one diagonal saw and corresponding suction and / or Abfräsvorrichtungen. The handling of the stack with neatly executed (geradliniegen) edges is also in the subsequent compression of advantage.

 This process (separation of the screen belts from one another) can be dispensed with if the bamboo layers 23 in the transfer region 17 could be continuously placed on the cover layer or the surface of the chip layer 24. In this case, too, would be the

Acceleration distance 18 (range c in front of the press) not necessary, with the the screen belt 5, or the stack now formed 27, according to Figure 3 consisting of a wire 5 as a means of transport two bamboo layers 23 and an intermediate Schnitzel layer 24, which in turn consists of three layers 28 along, transverse and again longitudinally scattered chips. The stack 28 on the wire 5 is now analogous to the continuous again

Compression as before the spreader 8 on again to a leading

Siebband 5 attached and as a quasi-endless screen belt 5 through the

continuously operating press 19 for producing the material plate 20 driven and pressed. Subsequently, in a separating device 21 (in the production direction 21 after the press 19), the screen belt 5 of the

 Material plate 20 separated, passed the wire 5 to a Siebbandrücklauf 22 and fed the material plate 20 for further processing. The bamboo layers 23 are preferably delivered as finished mats of the same width as the press width and predetermined length as a mat stack 26. As already stated, a bamboo layer 23 can also consist of several finished mats made of bamboo, the bamboo in the

Essentially has undergone no further treatment except for a longitudinal division into shell fragments and optionally a drying and usually undergoes a gluing at least on one surface side before forming the bamboo layer 23. This can be omitted if, for example, the bamboo layer 23 is placed as a cover layer on an already glued or glue-containing surface of a stack 27. If now a cyclic compression performed, the transport is the stack 27 after the spreader 8 intermittently in a Clock press, if necessary, a Mehretagenpresse bring. Is continuously pressed and either no bamboo layer 23 is applied as a cover layer after the spreader 8 on the stack 27 or the system is capable of applying the bamboo layer 23 continuously on the stack 27, then at the same speed (V _kon ti) between spreader 8 and the Press 19 continued and pressed.

 In addition, the manufacturing categories can be refined by distinguishing the stack structure of the stack 28 itself and the transport means for stack formation: For producing a base mixing plate, respectively a material plate 20 consisting of only one bamboo layer 23 and at least one scattered chip layer 24, preferably oriented scattered Chipping, can be applied to the transport means to form a stack 27, first the bamboo layer 23 and the bamboo layer 23, the chip layer 24. These are then pressed in the press 19 Under certain circumstances, however, the bamboo layers 23 are not suitable for

Form belts are transported and suffer harmful displacements or fall even with their edges in the distances between two

Pulleys of two separate bands. Alternatively, the chip layer 24 could first be applied to the forming belt and then the bamboo layer 23 to the forming belt. In connection with a usual pre-compaction of the chip layer with or without the bamboo layer 23, the chip layer 24 is able to survive jumps between forming belts or the transfer to the press 19 smoothly. However, the Venting in a continuously operating press during the inlet in this constellation also cause problems.

 To avoid these disadvantages, it may just make sense to place the bamboo layer 23 on a wire 5, to perform the further transport gently and without damage. In principle, all possible variants of a mixing plate as a material plate 20 can be produced with the proposed system, so that the exemplary embodiment is not limited to a material plate according to FIG. The plant is not only suitable for carrying out the process, but also independently operable.

An exemplary plant for producing a, in particular high-density, material plate of wood or wood-like raw materials and / or from

Plastics, comprising at least one transfer device (4, 16) for a bamboo layer (24) and a scattering device (8) for doffing

Chips for forming a stack (27), at least one transport means, in particular a screen belt (5), for forming and transporting a stack (27) of at least one bamboo layer (24) and one

Schnitzelschicht (23) predetermined structure and a press for pressing the stack (27) with or without means of transport by means of pressure and / or heat to a material plate (20). The system advantageously has a circulation for the screen belts 5. Preferably, a continuous spreading device (8) and / or press (19) can be arranged. In particular, it may be provided that at least one acceleration section (6, 12, 18) is connected between the at least partially cyclical formation of the stack (27) Transfer device (4, 16) and the scattering device (8) and / or the press (19) is arranged.

A material plate having a density above 800 kg / m ³ includes at least an odd number of at least one oriented scattered

Chip layer (24) and at least one bamboo layer (23), each layer having a different orientation of the fiber direction relative to the at least one adjacent layer. Preferably, the material plate (1) has at least one ground surface side (10). The chips should have a length in the longitudinal direction of over 220 mm and / or substantially not exceed the length of 300 mm. The material plate should have a density of more than 800 kg / m ³ , preferably a density of more than 850 kg / m ³ , particularly preferably a density of more than 900 kg / m ³ . In particular, the material board according to the invention can be arranged in ship, storage, office or living containers as a load-bearing covering. (1418).

List of Reference Numerals: DP 1418

1 . Glue tape (a)

 2. Separation device (a)

 3. Gluing device (a)

4. Transfer Device (a)

 5. screen belt

 6. acceleration section (a)

7. Production speed (Vs.eb = V _CO nti)

8. spreading device

9. spreading machine across

 10. Spreading machine along

 1 1. Gluing device Schnitzel surface

12. acceleration section (b)

 13. Belts (b)

14. Separation device (b)

 15. Belieimvorichtung (b)

 16. Transfer device (b)

 17. Transfer area (b)

 18. acceleration section (c)

19th Press

 20. Material plate

 21. separating device

 22. Screen belt return

 23. Schnitzel layer

24. Bamboo layer

 25. Production direction

 26. Mat Stacks (a / b)

 27. Stack of 5 + 23 + 24

 28. Layer of a chip layer 23

Claims

 claims Method for producing a, in particular high-density, Material board made of wood or wood-like raw materials and / or plastics, characterized in that at least one bamboo layer (24) and at least one chip layer (23) sprinkled directly or indirectly on the transport means are provided on a means of transport such that a stack (27) of at least one bamboo layer (24 ) and a chip layer (23) in a predetermined sequence, and that the stack (27) is then pressed with or without transport in a press by means of pressure and / or heat to a material plate. A method according to claim 1, characterized in that as the transport means for the stack (27) a screen belt (5) is used, which is essentially suitable in a cycle press or in series with a plurality of screen belts (5) in a continuous working press (19) to press the stack (27). A method according to claim 1 or 2, characterized in that the fibers of the bamboo layers (24) are substantially oriented in or transverse to the direction of the fibers of the adjacent ones Schnitzelschicht (23) are arranged. 4. The method according to one or more of the preceding claims, characterized in that the layer of braided bamboo strips and / or bamboo strips of a size of 10-100 mm width and / or 300 - 3,000 mm in length and / or a thickness of 0.3 - 10 mm. 5. The method according to one or more of the preceding claims, characterized in that the direction of the fibers of the bamboo layer (24) is arranged substantially in or transverse to the direction of the adjacent Schnitzelschicht (23), wherein the  Schnitzelschicht (23) consists of at least three scattered layers (28) and the directions of the fibers of these layers (28) to each other at an angle, preferably orthogonal to each other, are arranged. 6. Plant for producing a, in particular high-density, material board made of wood or wood-like raw materials and / or plastics, at least comprising:  - at least one transfer device (4, 16) for a bamboo layer (24) and a spreading device (8) for shedding chips to form a stack (27), - At least one means of transport, in particular a screen belt (5), for Forming and transporting a stack (27) of at least one bamboo layer (24) and a Schnitzelschicht (23) predetermined structure  - A press for pressing the stack (27) with or without  Means of transport by means of pressure and / or heat to a material plate (20). Plant according to claim 6, characterized in that the screen belts (5) form a circulation. Plant according to claims 6 or 7, characterized  in that a continuous scattering device (8) and / or press (19) is arranged. 9. Plant according to one or more of the preceding system claims, characterized in that for at least partial cyclic formation of the stack (27) at least one acceleration section (6, 12, 18) between the transfer device (4, 16) and the scattering device (8) and / or the press (19) is arranged. 10. Plant according to one or more of the preceding claims, characterized by the use of the method according to claims 1 to 5. 11. Material plate of a density above 800 kg / m ^3, at least including an odd number of at least one oriented scattered  Chip layer (24) and at least one bamboo layer (23), wherein each layer to the at least one adjacent layer has a different orientation of the fiber direction. 12. Material plate according to claim 11, characterized in that the material plate (1) has at least one ground surface side (10). 13. Material board according to claim 11 or 12, characterized  characterized in that the chips used in  Lengthwise have a length of about 220 mm and / or the length of 300 mm substantially not exceed. 14. Material plate according to one or more of Material plate claims, characterized in that the material plate has a density of about 800 kg / m ³ , preferably a density of about 850 kg / m ³ , more preferably a density above 900 kg / m ³ . 15. Material plate according to one or more of Material plate claims, characterized in that the material plate is arranged in ship, storage, office or living container as a durable covering.