DE202011108054U1 - Wood composite board - Google Patents

Abstract

Composite wood panel made up of a number of individual panels (10, 10 ', 10' ') of equal thickness, which panels (10, 10', 10 '') are constructed of wood panels (11, 12) , the juxtaposed, aligned in the same direction and interconnected strips (5, 6), wherein adjacent wood layers (11, 12) of a plate (10, 10 ', 10' ') mutually perpendicular to each other fiber directions (F) of Strips (5, 6), characterized in that - the plates (10, 10 ', 10' ') have an odd number of layers of wood (11) and the strips (6, 6) located in outer layers of wood (11, 12) a fiber direction (F) directed at an angle of up to 10 °, preferably up to 5 °, to the longitudinal extent of the respective plate (10, 10 ', 10' '), - that the plates (10, 10 ', 10' ') with respect to the succession of the wood layers (11) have the same structure, and - that a predetermined Number of plates (10, 10 ', 10' ') with ...

Description

The invention relates to a wood composite board. Such wood composite panels are advantageously used for the production of rigid wooden structures, furniture, walls, coated panels, doors, etc. and are currently produced by gluing several layers of wood. It is known to provide such panels having a number of individual, interconnected, same layered panels, which panels are constructed of wood plies having adjacent, aligned and interconnected ledges, adjacent wooden plies of a panel each having mutually perpendicular grain directions of the strips.

The aim of the invention is to produce such wood composite panels cost with little effort and high strength.

This is achieved in a wood composite panel of the type mentioned in that the plates have an odd number of layers of wood and located in the outer layers of wood strips have a fiber direction, at an angle of up to 10 °, preferably up to 5 °, to the Longitudinal extent of the respective plate is directed that the plates have the same structure with respect to the succession of the wood layers, and that a predetermined number of plates with their outer layers of wood adjacent to each other connected to the wood composite plate, the respective plates with their outer layers of wood, in which the fiber direction of the strips ( 6 ) is aligned in the direction of the longitudinal extent of the respective plate, are interconnected and in each case two layers of wood abut each other, in which the fiber direction extends in the longitudinal direction of the plates.

In the manufacture of the plates, the procedure is such that at least one, an odd number of layers owning, at least three-ply, preferably present in the form of a residue or waste piece, wood multilayer board or cross-laminated board in which the individual interconnected layers with adjacent, in the are formed in the same direction aligned and interconnected strips and the strips of each layer have a longitudinal direction of the respective bar fiber direction and the strips are arranged in superimposed adjacent layers each with mutually perpendicular directions of fibers, parallel to the fiber direction or at an angle of up at 10 °, preferably up to 5 °, to the fiber direction of the strips located in a given layer, preferably an outer layer, is divided by parallel separating cuts in several layers of wood plates and dami t advantageously plates are created, which have the same structure with respect to their wood layers.

The wood multilayer boards or cross-laminated board used to make these panels were made by laying the one-layer strips longitudinally along the grain parallel to each other and one behind the other, so that a predetermined area is filled with these bars arranged in parallel and having the same fiber direction. On this layer strips are placed, the or their fiber direction perpendicular to the already laid strips, until this further layer is also designed or filled with such strips. It is on another layer with strips created such that the strips in this layer have a fiber direction that is perpendicular to the fiber direction of the strips in the previous layer. Such a sandwich-like layering of strips each having alternately mutually perpendicular fiber directions is known in the production of cross-laminated wood or of cross-laminated board and also in specially constructed wood multilayer boards.

The strips used may be boards, strips, rods or the like molded profiled woods of any kind of wood. The cross-sectional area of the individual strips of at least one layer is usually chosen to be the same and varies between square and more or less elongated rectangular.

The strips in the individual layers and the individual layers are connected with each other. If, in the following, a connection is mentioned, this means a gluing or gluing, wherein the gluing or gluing is advantageously carried out under the action of a corresponding pressing pressure, which is maintained for a certain period of time.

The individual layers formed with the strips are connected to one another, thereby creating a multilayer wood panel in which the fiber directions of the strips in adjacent layers each extend perpendicular to one another.

To produce the plates, such a wood multilayer board having an odd number of layers is now divided by parallel separating cuts. The division with cuts of particular rectangular wood multilayer boards is parallel to a longitudinal or transverse edge or at an angle of up to 10 °, preferably up to 5 °, inclined thereto, wherein the respective edges or separating cuts parallel to the fiber direction of the respective outer layers located strips. The cuts can be so be led that strips, be split once or more times in their longitudinal direction. However, it is also possible to perform the division in such a way that in the separating cuts the distance of the guided cuts is greater than the width of a bar.

It thus obtains panels with wood layers which have an odd number of juxtaposed and interconnected, elongated layers of wood, the outer layers of wood is formed by at least one wooden strip whose fiber direction in the longitudinal direction of this bar or at an angle of up to 10 °, preferably up to 5 °, extending to the longitudinal direction.

At least one other layer of wood is formed by a number of parallel aligned, successively arranged, interconnected pieces of wood, wherein the fiber direction of these pieces of wood is perpendicular to the grain of the wood strips in the outer layer of wood.

Side by side arranged wood layers have perpendicular to each other, but not intersecting oriented fiber directions of the wood strips and pieces of wood.

The plates produced in this way are used to create wood composite panels according to the invention with them. In this case, the procedure is such that a predetermined number of panels obtained by cutting wood multilayer boards or board plywood panels are joined together with their surfaces forming the surface of the wood multilayer panel or board plywood panel side by side to form a wood composite panel by the panels with the outer surfaces of the outer Ledges or wooden layer are connected.

The wood composite panels constructed with such panels have high rigidity and good strength behavior, in particular due to the double existing or adjacent outer strips with extending in the longitudinal direction of the strips fiber direction, and are for building and for the preparation of flat objects, such as wall surfaces of wooden houses, Can be used for furniture construction, for doors and other wooden constructions. It is of particular advantage that waste and remnants of cross-laminated board or multi-layer wood panels can be recycled in this way, the resulting sheets offering even higher proficiency values due to the doubly-existing strips with longitudinally extending fiber direction.

A homogeneous plate structure is achieved when a same succession and an equal odd number of wood-bearing plates, which are preferably obtained when cutting one and the same wood multilayer board or cross-laminated board, are connected side by side to a wood composite board or core board. However, this arrangement is not mandatory. It is also possible to join plates which have a different odd number of layers of wood.

For reasons of strength can be additionally provided that adjacent plates are connected such that the abutting surfaces of the pieces of wood in the layers formed by the individual pieces of wood offset from each other, in particular centrally offset aligned.

An advantageously high strength owning arrangement or construction with the plates according to the invention results when a predetermined number of wood composite panels is sandwiched over each other, wherein the present in adjacent plates wood strips having a longitudinal direction of the wood strips extending fiber direction with perpendicular to each other Fibers are aligned and / or be attached to at least one of the opposite surfaces of the resulting wood composite panel or sandwich-bonded wood composite panels cover plates or veneers or cladding panels.

In the wood composite panel made of panels, the adjacent panels joined together have the same thickness.

It is envisaged that the outer wood layers of the plates are each formed by at least one strip of wood whose fiber direction is parallel to the side surface of the plate.

It can be provided that outer layers of wood are formed with two identical layers or opposite wood layers double-ply, wherein such outer layers of wood each having two superimposed, same, own in the longitudinal direction of the bar fiber direction wood strips are formed.

The width of a wood layer may correspond to the width of a wooden strip or it may form a wood layer several superimposed or juxtaposed with respect to their fiber direction the same oriented wood strips.

A durable, solid construction results when the pieces of wood arranged successively in a wooden layer are connected to one another and / or the pieces of wood and / or the wooden strips and / or the wooden layers are joined together optionally glued or glued using pressure.

To achieve uniform strength, it is expedient if the adjacent plates have an equal number of wood layers and / or the adjacent plates come from one and the same multilayer wood board or cross laminated board. It is quite possible that not enough plates can be produced from a remaining section of a cross laminated wood board (KHL) or wood multilayer board in order to produce a wood composite board or core board. In this case, it is expedient to find a KLH plate with identical structure in order to complete the wood composite panel or core plate.

In a further development of a wood composite panel according to the invention can be provided that the wood composite panel or core plate is connected on its top and / or bottom surface with a cover plate or a cross-laminated board or a veneer plate or another wood composite panel or core plate, wherein when connected to another wood composite panel with the wood strips extending in their longitudinal direction extending fiber direction in adjacent wood composite panels in mutually perpendicular directions.

In the following the invention will be explained in more detail with reference to the drawing, for example.

1 to 3 and 4 to 6 each show in plan view us side views a cross-laminated board or at the same time front views of the panels obtained by separating cuts, 7 to 10 show wood composite panels in plan view and frontal view.

1 and 3 show cuts through a wood multilayer board or cross laminated board 1 . 1' . 1'' like these in 2 is shown in plan view. The wood multilayer board 1 consists of three superimposed strips 4 built-up layers 2 . 3 , The wood multilayer board 1' includes five layers 2 . 3 and the wood multilayer board 1'' includes seven layers 2 . 3 , It can be seen that the layers are arranged such that the fiber direction F of the strips creating the layers 4 in the individual layers 2 . 3 perpendicular to each other. So owns the wood multilayer board 1 the middle layer 3 a fiber direction which is perpendicular to the drawing surface, while in the outer layers 2 lying strips 4 have a fiber direction F extending in the image plane. The strips 4 a layer 2 . 3 may have the same or different cross section. It is essential that a continuous filled, coherent layer 2 . 3 is trained.

In 2 is a plan view of a wood multilayer board 1 . 1' . 1'' shown, in which the cover layer 2 running strips 4 are shown, the fiber direction in the longitudinal direction of the strips 4 runs.

How out 2 can be seen, separating cuts TS, preferably at equal intervals, parallel to the strips 4 or perpendicular to the bars 4 guided and with each cut a plate can be created, their structure by the sequence of layers of wood multilayer board 1 . 1 . 1'' is predetermined and whose cross-section corresponds to a cross-section, as it is either in 1 or in 3 is shown. According to the invention, the separating cuts become parallel to the longitudinal edge, ie parallel to the fiber direction of the strips 4 in the cover layer or in the outer layer 2 guided. Depending on the number of layers 2 . 3 becomes a plate 10 . 10 ' or 10 '' get the three, five or seven wood layers 11 . 12 has, as in 2 and 6 is shown. The angle of the cuts can be up to 10%, preferably up to 5% of the length of the respective strip 4 or their fiber direction deviate, without significantly affecting the strength properties of the resulting plates. In principle, the number of layers 2 . 3 after arbitrary.

In the 3 plates shown above 10 become in cross sections TS transverse to the lower or upper edge of the wood multilayer board 1 according to 2 obtained and show in their two outer layers perpendicular to the grain of the bars 4 cut wood pieces 5 , In her middle class 11 includes the plate 10 a continuous bar 6 whose fiber direction F is perpendicular to the grain of the wood pieces 5 formed course runs. These reduced strength plates are not made or used in practice. Are used plates with a structure accordingly 1 or 6 ,

Depending on the number of layers 2 . 3 the cross laminated wood panel 1 . 1' . 1'' you get plates 10 . 10 ' . 10 '' with three, five or seven layers. In the 1 and 3 illustrated plates 10 . 10 ' . 10 '' give the cross section of the cross laminated timber panels 1 . 1' . 1'' along the respective separating section TS again.

In the 3 illustrated plates 10 . 10 ' . 10 '' one obtains with separating cuts TS, as these in the lower range of in 2 shown cross-sectional wood board indicated or executed. If you separate the cross laminated board 1 . 1' . 1'' with cuts TS, as in 2 is shown on the left upper edge of the cross laminated timber board, we obtain plates 10 . 10 ' . 10 '' corresponding 6 in which bars 6 With the fiber direction extending in the longitudinal direction, the outer layers are formed and joined with pieces of wood 5 alternating layers.

In 4 is a cross laminated board 1 shown at the opposite of in 2 illustrated cross laminated board 1 for the outer layers relatively broad strips 4 are used, which are parallel to the shorter side of the used cross laminated board 1 run. In such formed cross-laminated boards 1 separating cuts TS are made parallel to the short side to create plates for the wood composite board according to the invention. You get plates 10 . 10 ' . 10 '' alternating wood layers 11 . 12 with parallel to the longitudinal direction of the plate extending fiber direction or pieces of wood 5 are formed. The layer structure of the obtained plates 10 . 10 ' . 10 '' . 10 ''' corresponds to the in 5 and 6 illustrated cross sections of the cross laminated timber board 1 , depending on the location of the cuts TS, the structure according to 5 merely to illustrate the cutting guide and is of little significance in practice.

The plates 10 ''' are boards made with a cross laminated board, the double formed and with respect to the splitting joints of the strips 4 has not offset outer layers. A corresponding appearance or a corresponding succession of the layers or wood layers after carrying out the corresponding separating cuts is the 5 and 6 refer to.

According to the invention it is provided that the plates obtained 10 . 10 ' . 10 '' joined together to composite wood panels. This will, as in 7 shown, a number of, preferably equal thickness, plates 10 and or 10 ' and or 10 '' with a construction accordingly 1 and 6 placed next to each other and connected. This results in composite panels 7 . 7 ' . 7 '' . 7 ''' , Become plates 10 ' placed next to each other and connected, like these in 6 are shown, we obtain a wood composite plate 7 like these in 8th is shown. 9 shows a wooden composite plate 7 '' that with plates 10 '' with five layers of wood 11 . 12 was created, with three such plates were juxtaposed and connected.

In general, the plates are joined to the surfaces which have formed the surface of the wood-clad sheets subjected to the cuts. The number of interconnected plates is freely selectable.

10 shows the connection of plates 10 ''' in which - as in 6 shown - the outer layers were formed twice or with two last layers.

Summary

The invention relates to a wood composite board having a number of individual, interconnected, same layer structure owning plates 10 . 10 ' . 10 '' is created, which plates 10 . 10 ' . 10 '' from wood layers 11 . 12 are constructed, the side by side, aligned in the same direction and interconnected bars 5 . 6 have, with adjacent wood layers 11 . 12 a plate 10 . 10 ' . 10 '' in each case mutually perpendicular fiber directions F of the strips 5 . 6 have. Successfully, it is provided that the plates 10 . 10 ' . 10 '' an odd number of layers of wood 11 own and the outside wood layers 11 . 12 located strips 6 have a fiber direction F at an angle of up to 10 ° to the fiber direction of these strips 4 is directed, and that a predetermined number of plates 10 . 10 ' . 10 '' with their exterior wood layers 11 next to each other to the wood composite board 7 . 7 ' . 7 '' connected is.

Claims (6)

Composite wood board having a number of individual, interconnected, layered plates ( 10 . 10 ' . 10 '' ), which plates ( 10 . 10 ' . 10 '' ) of wood layers ( 11 . 12 ) are arranged side by side, aligned in the same direction and interconnected bars ( 5 . 6 ), wherein adjacent wood layers ( 11 . 12 ) a plate ( 10 . 10 ' . 10 '' ) mutually perpendicular fiber directions (F) of the strips ( 5 . 6 ), characterized in that - the plates ( 10 . 10 ' . 10 '' ) an odd number of layers of wood ( 11 ) and the wood layers ( 11 . 12 ) strips ( 6 ) have a fiber direction (F) at an angle of up to 10 °, preferably up to 5 °, to the longitudinal extension of the respective plate (FIG. 10 . 10 ' . 10 '' ), - that the plates ( 10 . 10 ' . 10 '' ) concerning the succession of wood layers ( 11 ) have the same structure, and - that a predetermined number of plates ( 10 . 10 ' . 10 '' ) with their outer layers of wood ( 11 ) lying side by side to the wood composite panel ( 7 . 7 ' . 7 '' ), the respective plates ( 10 . 10 ' . 10 '' ) with their outer layers of wood ( 11 ), in which the fiber direction (F) of the strips ( 6 ) in the direction of the longitudinal extension of the respective plate ( 10 . 10 ' . 10 '' ), are interconnected and each have two layers of wood ( 11 ) lie in each other, in which the fiber direction in the longitudinal direction of the plates ( 10 . 10 ' . 10 '' ). Wood composite panel according to claim 1, characterized in that external wood layers ( 11 . 12 ) with double thickness or double-layered opposite inside lying wood layers are formed, where appropriate, such external wood layers ( 11 . 12 ) each have at least two in the direction of the edge of the plate adjacent, the same fiber direction (F) possessing wooden strips ( 6 ) or pieces of wood ( 5 ). Wood composite panel according to claim 1 or 2, characterized in that the width of a wooden layer ( 11 ) the width of a wooden strip ( 6 ) and / or that in a timber layer ( 12 ) successively arranged pieces of wood ( 5 ) and / or that the pieces of wood ( 5 ) and / or the wooden strips ( 6 ) and / or the wood layers ( 11 . 12 ) for connection or connection with each other, optionally using pressure, glued or glued. Wood composite panel according to one of claims 1 to 3, characterized in that the wood composite panel ( 7 . 7 ' . 7 '' ) a number of juxtaposed, interconnected plates ( 10 . 10 ' . 10 '' ) of equal thickness, wherein at least a number of adjacent plates ( 10 . 10 ' . 10 '' ) the same sequence and / or the same odd number of layers of wood ( 11 . 12 ) having. Composite wood panel according to claim 4, characterized in that the adjacent panels ( 10 . 10 ' . 10 '' ) of one and the same multilayer wood board or cross laminated board ( 1 . 1' . 1'' ) or at least one in the form of a residual or waste piece of wood multilayer board or cross-laminated board ( 1 . 1' . 1'' ) or wood multilayer boards or cross-laminated timber boards ( 1 . 1' . 1'' ) come with the same layer structure. Wood composite panel according to one of claims 1 to 5, characterized in that the wood composite panel ( 7 . 7 ' . 7 '' ) on its upper and / or lower surface with a cover plate or a cross-laminated board or a veneer plate or at least one further wood composite plate or core plate ( 7 . 7 ' . 7 '' ), wherein when connected to another composite wood panel ( 7 . 7 ' . 7 '' ) the wooden strips ( 6 ) with fiber direction (F) extending in its longitudinal direction in adjacent wood composite panels ( 7 . 7 ' . 7 '' ) are arranged extending in mutually perpendicular directions

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