WO2010086142A1

WO2010086142A1 - Floor and plate-shaped wood-containing composite element

Info

Publication number: WO2010086142A1
Application number: PCT/EP2010/000475
Authority: WO
Inventors: Albert Karl
Original assignee: Fisher, Marie-Theres
Priority date: 2009-01-30
Filing date: 2010-01-27
Publication date: 2010-08-05
Also published as: DE202009008367U1; EP2404014A1

Abstract

The invention relates to a method for producing a plate-shaped composite element (8), comprising wood-containing elements (1) and a solid plastic material (2) in the intermediate spaces (3) of the wood-containing elements (1), wherein the method comprises the following steps: (i) non-solidified plastic material (2) is added into the intermediate spaces (3) between wood-containing units (9); (ii) the plastic material (2) is allowed to solidify, so that a composite block (10) is obtained from the units (8) and the curable plastic material (2); and (iii) plate-shaped composite elements (8) are separated from the compound block (10) using a separating device (11), said composite elements comprising wood-containing elements (1) and a solid plastic material (2) in the intermediate spaces (3) of the wood-containing elements (1).

Description

Floor and plate-shaped wood-containing composite element

DESCRIPTION

Field of the invention

The present invention relates to a plate-shaped composite element (8) comprising wood-containing elements (1) and a solid plastic material (2) in the interspaces (3) of the wood-containing elements (1), and a method for its production. Moreover, the invention relates to a floor made of a wood-containing material and a curable material, which fills the spaces between the elements of the wood-containing material, as well as plate-shaped wood-containing composite elements, which can be used, for example, as floor coverings or wall panels, and methods for their preparation.

Background of the invention

Conventional wood-containing floors, such as parquet floors or plank floors, suffer from the problem that the wood swells and shrinks by absorbing and releasing moisture and thus fissures in the floors. In order to prevent cracking, the individual parquet or plank elements are not firmly joined together so that the wood can "work" without damage, which in turn has the disadvantage that dirt and water can accumulate in the gaps, which is unhygienic This problem is even more pronounced when two different woods are contained in the floor, for example in the case of wood veins interposed between elements of another type of wood.

task

Thus, the task is to provide composite panels, in particular floors, wood-containing elements and another material between the individual wood-containing elements, wherein the composite panels have no gaps between the individual components, so are closed. Another object is to provide a simple method for producing stable wood-containing composite panels from wood-containing elements and another material in the interstices of the wood-containing elements.

Summary of the invention

This object is achieved by the present invention.

The present invention relates, in a first aspect, to a plate-shaped composite element (8) comprising wood-containing elements (1) and a solid plastic material (2) in the interstices (3) of the wood-containing elements (1), and to a method for the production thereof. The method for producing a plate-shaped composite element (8) comprising wood-containing elements (1) and a solid plastic material (2) in the interstices (3) of the wood-containing elements (1) comprises the following steps: (i) non-solidified plastic material (2 ) is in the interstices (3) between woody

(Ii) it is allowed that the plastic material (2) solidifies, so that from the units (9) and the curable plastic material (2), a composite block (10) is formed, and (iii) from the composite block (10) with a separator (1 1) plate-shaped composite elements (8), each having wood-containing elements (1) and a solid plastic material (2) in the interstices (3) of the wood-containing elements (1) , separated. The advantages of the plate-shaped composite element according to the invention according to the first aspect are that in a simple manner stable wood-containing plates, for. As floor coverings made of solid wood or wall panels, can be made having any pattern of a different material. These patterns are created by the plastic material (2) in the interstices of the wood-containing elements (1). Such patterns may have any shape and are, for example, between solid wood elements located strips that mimic inserted between the solid wood elements wires from a different type of wood. The plastic material serves in the present invention both as an adhesive and as a visible constitution, construction and design element. Thus, in the simplest case, apart from the wood-containing element and the plastic material, no further components, such as glue or a second wood-containing element, are required in order to produce a wood-containing element with patterns. In a second aspect according to the following items (1) to (66), the present invention relates to a floor and a plate-shaped wood-containing composite element. The plate-shaped wood-containing composite element is not limited in its use on floor, but can for example also be used as a partition. The advantages of the floor according to the invention according to the second aspect are that an extremely strong connection between the base and the floor structure and between the individual elements of the floor can be made. In addition, the solidified material forms a stable basic structure of the flooring, whereby the wood-containing elements can be made thin. The thin design of the wood-containing elements in turn means that the swelling and shrinkage of the wood is limited. Advantages compared to conventional floors are thus jointless feasibility, firm bond to the ground, low construction height, colorability of the wood interspaces and the possibility of using different woods in one and the same floor space.

Description of the drawings

Fig. 1 and Fig. 2 show a method according to the first aspect of the present invention for producing a plate-shaped composite element. Fig. 3 shows a composite block (10) for use in a method according to the first aspect of the present invention for producing (a) a gravel patch pattern, (b) a stripe pattern and (c) a mosaic pattern. Fig. 4 shows a composite block (10) for use in a method according to the first aspect of the present invention. The composite block (10) is divided along the line A-B into smaller units (15), and these are separated by the separating device (1 1) in plate-shaped elements (8). Fig. 5 shows the preparation of various floor patterns from a plate-shaped composite element (8) by different cutting of the composite element (8) and joining the obtained parts to a desired floor pattern. Fig. 6 shows a cross section of a floor according to the invention according to the second aspect of the present invention. Fig. 7 shows a cross section of a plate-shaped wood-containing composite element according to the invention according to the second aspect of the present invention. LIST OF REFERENCE NUMBERS

1: wood-containing element; 2: plastic material; 2a: solidified underground material; 3: space between two wood-containing elements; 4: pad; 5: solidified space material; 6: solidified surface material; 7: support element; 8: plate-shaped composite element; 9: wood-containing unit; 10: composite block; 1 1 separating device; 12 plate-shaped wood-containing unit; 13 recesses; 14 bars; 15 smaller unit of composite block (10)

Detailed description of the invention

The present invention according to the first aspect includes the following embodiments.

(1) A method of manufacturing a plate-shaped composite member (8) having wood-containing elements (1) and a solid plastic material (2) in the interstices (3) of the wood-containing members (1) in plan view of the plate plane, the method as follows Steps includes:

(1) wood-containing units (9) are provided with spaces (3) between the individual wood-containing units (9),

(ii) non-solidified plastic material (2) is placed in the interspaces (3), (iii) the plastic material (2) is allowed to solidify, so that the wood-containing units (9) and the curable plastic material (2 ) a composite block (10) is formed,

(iv) the composite block (10) is optionally divided into smaller units, and (v) from the composite block (10) or the smaller units thereof with a separating device (1 1) plate-shaped composite elements (8) are separated, which in the plan view the plate plane wood-containing elements (1) and a solid plastic material (2) in the interstices (3) of the wood-containing elements (1).

(2) Method according to item (1), wherein the units (9) are arranged side by side so that the intermediate spaces (3) are formed.

(3) The method according to item (1), wherein the gaps (3) are formed by forming recesses (13) forming spaces (3) in a plate-shaped wood-containing unit (12), the recesses being in the direction perpendicular to Plate plane does not extend through the entire plate-shaped unit (12), but webs (14) remain.

(4) The method according to item (3), wherein the ridges are removed by separating a plate-shaped member having the ridges (14) after hardening the plastic material (2) from the composite block (10) with the separator (11) , (5) Method according to one of the preceding items, wherein the gaps (3) have a width expressed as a minimum distance between the units (9) selected from the group consisting of the ranges of at least 0.1 mm, at least 0, 5 mm, at least 1 mm, 0.1 to 30 mm, 0.5 to 10 mm, 1 to 10 mm, 2 to 10 mm, and 3 to 10 mm.

(6) Method according to any one of the preceding claims, wherein with the separating device (11) plate-shaped composite elements (8) are cut off in a thickness selected from the group consisting of the ranges of 2 to 20 mm, 2 to 10 mm, 4 to 8 mm and 4 to 6 mm.

(7) Method according to one of the preceding points, wherein the elements (9) have a height such that with the separating device (1 1) from the composite block (10) at least two plate-shaped composite elements (8) of a thickness specified in point (5) can be produced. (8) The method according to item (7), wherein the elements (9) have a height of 4 to 20 cm. (9) The method according to any one of (4) to (8), wherein the recesses (13) are formed so that in the plate-shaped composite element (8) to be produced, the wood-containing elements (1) after the removal of the webs (14) in one piece stay connected.

(10) Method according to one of the preceding points, wherein the wood-containing elements (1) consist of solid wood.

(1 1) The method according to any preceding item, wherein the plastic material (2) is a synthetic resin.

(12) The method according to item (1 1), wherein the plastic material (2) is a two-component epoxy resin.

(13) A plate-shaped composite member (8) producible by a method according to any one of (1) to (12). (14) A composite plate-shaped element comprising wood-containing elements (1) and a plastic material (2) in the element spaces, characterized in that the wood-containing elements (1) are arranged in the plane of the plate and on the upper and / or lower surface of the plate-shaped one Composite element, the wood-containing elements (1) and the plastic material (2) are flush. (15) Use of the plate-shaped composite element according to item (13) or (14) as a floor covering. Composite panel comprising wood - containing elements (1) and a solidified material (2) filled in the element spaces, characterized in that the wood - containing elements (1) are arranged in one plane and on at least one of the upper and lower surfaces of the Composite panel, the wood-containing elements (1) and the material (2) are flush. (17) The composite panel according to (16), wherein the filled solidified material is an epoxy resin. (18) Composite panel according to (16) or (17) having a thickness of 4 to 6 mm.

The present invention according to the second aspect includes the following embodiments (1) to (66).

(1) Floor comprising a flat base (4), wood-containing elements (1) in a plane parallel to the base (4), and a material selected from a base material (2a) containing a solid plastic, as Connecting means between the base (4) and the wood-containing elements (1) and / or a space material (5) containing a solid plastic in the interstices of the wood-containing elements (1) as a connecting means between the wood-containing elements (1). (2) floor according to item (1), characterized in that the wood-containing elements (1) and the intermediate space material (5) on the side facing away from the base (4) are flush.

(3) Floor according to item (1), characterized in that it further comprises a surface material (6) containing a solid plastic on the surfaces of the wood-containing elements (1) on the base

(4) facing away. (4) Floor according to one of the points (1) to (3), characterized in that the base (4) facing away from the side is smooth. (5) Floor according to any one of the preceding items, wherein the wood-containing elements (1) do not touch each other. (6) Floor according to any one of the preceding points, wherein the wood-containing elements (1) consist of solid wood. (7) The floor according to any preceding item, wherein the base material (2a) and the space material (5) or the base material (2a) and / or the space material (5) and / or the surface material (6) are in one piece. (8) Floor according to any one of the preceding items, wherein the wood-containing elements (1) have a thickness of 1 to 8 mm. (9) Floor according to any one of the preceding points, wherein the wood-containing elements (1) have a thickness of 2 to 5 mm. (10) The floor according to any preceding item, wherein the element gaps (3) have a width within a range selected from the group consisting of the ranges of at least 0.1 mm, at least 0.5 mm, min - 1 mm, 0.1 to 10 mm, 0.5 to 10 mm, 1 to 10 mm, 2 to 10 mm and 3 to 10 mm. (11) The floor according to any one of the preceding items, wherein the element spaces (3) have a width of 1 to 5 mm. (12) The floor according to any preceding item, wherein the base material of at least two materials selected from the group consisting of the base material (2a), the spacer material (5) and the surface material (6) is the same, and the compositions of the at least two materials differ only in the amount of aggregates. (13) Floor after point (12), wherein the base material of the base material (2a), interspace material (5) and surface material (6) is the same. (14) Floor according to one of the preceding points, wherein the base (4) is a screed floor. (15) Floor according to any one of the preceding claims, wherein the base material (2a), the space material (5) and / or the surface material (6) adjacent to

Plastic contains a wood-containing material. (16) The floor according to item (15), wherein the wood-containing material is sawdust or sawdust. (17) The floor according to any preceding item, wherein the plastic is a synthetic resin. (18) The floor according to any preceding item, wherein the plastic is a solvent-free synthetic resin. (19) The floor according to any preceding item, wherein the plastic is a two-part epoxy resin. (20) A floor according to any one of the preceding points, consisting of elements (1) and space material (5) alternately on a surface facing away from the base (4) in a direction of the floor plane. (21) Floor producible by a process comprising the steps of:

(i) applying a curable base material (2a) containing a hardenable plastic to a base (4),

(ii) placing wood-containing elements (1) on the base (4),

(iii) introducing a hardenable interspace material (5) containing a hardenable plastic into the element interspaces (3) of the wood-containing elements (1) and (iv) allowing the hardenable sub-base material (2a) and the curable interspace material (5) to solidify; whereby a firm connection between the base (4) and the wood-containing elements (1) and between the wood-containing elements (1) is formed, wherein optionally the curable base material (2a) and the curable intermediate space material (5) are identical and the steps (i) and (iii) can be carried out simultaneously after step (ii) by introducing the curable material into the element spaces (3) such that it at least partially penetrates into the space between the base (4) and the wood-containing elements (1 or, optionally, wherein the curable base material (2a) and the curable interspace material (5) are identical, in step (i) the curable material in one such amount is applied to the substrate (4) and in step (ii) the wood-containing elements are placed on the substrate so that the hardenable material moves at least partially into the space (3) between the wood-containing elements (1), and step (iii) may be omitted. (22) flooring according to item (21), the process comprising the following further stage:

(v) sanding the floor so that the wood-containing elements (1) and the intermediate space material (5) are flush. (23) Floor according to item (21), wherein in stage (iii) or after stage (iii) the surface material (6) is applied to the wood-containing elements (1). (24) floor according to item (23), the method comprising the further step of: (v) sanding the floor so that the wood-containing elements (1), including the if on the surface of the wood-containing elements (1) existing surface material (6), and the solidified space material (5) are flush, or

(v) sanding the floor so that the solidified surface material (6) partially or completely covers the wood-containing elements (1). (25) The floor according to any of (21) to (24), wherein the wood-containing elements (1) are laid as a dressing of a plurality of wood-containing elements which may be applied to a fabric or a paper web in step (ii). (26) The floor according to any one of (1) to (19), producible by the method according to any one of (20) to (25). (27) A laminated wood-containing composite member comprising wood-containing members (1) arranged in a plane, a spacer material (5) containing a solid plastic in the interstices of the members (1) as a bonding agent between the wood-containing members (1) and optionally a surface material (6) containing a solid plastic, on the surface of the wood-containing elements (1), wherein the plate-shaped wood-containing composite element is ground at least on one side and the wood-containing elements, including optionally on the surface of the wood-containing elements ( 1) existing surface material (6), and the space between the material on at least the ground side are flush. (28) A panel-shaped wood-containing composite member according to item (27), wherein the wood-containing members (1) do not contact each other. (29) A panel-shaped wood-containing composite element according to item (27 or 28), wherein the wood-containing members (1) are made of solid wood. (30) A plate-shaped wood-containing composite member according to any one of (27) to (29), wherein the wood-containing members (1) have a thickness of 1 to 10 mm before grinding. (31) A plate-shaped wood-containing composite element according to any of (27) to (30), wherein the wood-containing elements (1) have a thickness of 2 to 5 mm before grinding. (32) A panel-shaped wood-containing composite member according to any one of (27) to (31), wherein the element spaces (3) have a width within a range selected from the group consisting of the ranges of at least 0.1 mm, at least 0.5 mm, at least 1 mm, 0.1 to 10 mm, 0.5 to 10 mm, 1 to 10 mm, 2 to 10 mm and 3 to 10 mm. (33) The plate-shaped wood-containing composite member according to any one of (27) to (32), wherein the element gaps (3) have a width of 1 to 5 mm. (34) A plate-shaped wood-containing composite member according to any one of (27) to (33), wherein the base material (2a), the space material (5) and the surface material (6) are the same. (35) A sheet-shaped wood-containing composite member according to any one of (27) to (34), wherein the base material of the base material (2a), the interspace material (5) and / or the surface material (6) is a synthetic resin. (36) A sheet-shaped wood-containing composite member according to any one of (27) to (35), wherein the base material of the base material (2a), the interspace material (5) and / or the surface material (6) is an epoxy resin. (38) A panel-shaped wood-containing composite member according to any one of (27) to (37), wherein the base material (2a), the space material (5) and / or the surface material (6) is a wood-containing material. (39) A panel-shaped wood-containing composite member according to any one of (27) to (38), further comprising a support member (7) connected to the plate-shaped wood-containing composite member on the side opposite to the side which is ground and in which the wood-containing elements, including optionally on the surface of the wood-containing elements (1) existing surface material (6), and the intermediate space material are flush. (40) A panel-shaped wood-containing composite element producible by a method comprising the steps of: (i) placing wood-containing elements (1) on a base (4), (ii) introducing a hardenable intermediate space material (5) containing a hardenable plastic, at least into the element spaces (3) of the wood-containing elements (1) and optionally at least partially into the space between the base (4) and the wood-containing elements (1) and optionally at least in part, the wood-containing elements (1), (iii) allowing the hardenable material to solidify, thereby forming a strong bond between the wood-containing elements (1),

(iv) if necessary, remove the pad (4) and

(v) grinding the surface facing away from the base, so that the wood-containing elements (1) and the intermediate space material (5) are flush. (41) A panel-shaped wood-containing composite element according to item (40), wherein before or in step (iii) a surface material (6) is applied to the wood-containing elements (1). (42) A panel-shaped wood-containing composite element according to item (41), wherein stage (v) of the method is carried out as follows: (v) grinding the plate-shaped wood-containing composite element so that the wood-containing elements (1), including optionally on the surface of the wood-containing Elements (1) existing O- surface material (6), and the solidified space material (5) are flush, or

Grinding the plate-shaped wood-containing composite element, so that the solidified surface material (6) the wood-containing elements (1) partially covered completely. (43) A sheet-shaped wood-containing composite member according to any one of (40) to (42), wherein the curable material of base material (2a) containing a curable resin and interspace material (5) containing a curable resin is the same (i) applying the hardenable material to a substrate, (ii) placing the wood-containing elements (1) on the substrate so that the hardenable material is partially moved into the element spaces (3), (iii) allowing the hardenable material to solidify, resulting in a strong bond between the wood-containing elements (1),

(iv) removing the pad and

(v) grinding the previously surface facing surface so that the wood-containing elements (1) and the intermediate space material (5) are flush or the solidified material partially or completely covers the surface of the wood-containing elements (1). (44) The plate-shaped wood-containing composite element according to item (43), wherein the step of removing the underlay by the grinding is carried out in step (v). (45) A plate-shaped wood-containing composite member according to any one of (27) to (39), producible by the method according to any one of (39) to (43). (46) A panel-shaped wood-containing composite member comprising in-plane wood-containing members (1), a spacer material (5) containing a solid plastic in interspaces of the wood-containing members (1) as connecting means between the wood-containing members (1) the support element (7) connected to the wood-containing elements (1) on one side of the plane, optionally a base material (2a) containing a solid plastic, as connecting means between the support element (7) and the wood-containing elements (1) and optionally a surface material ( 6) on the surface of the wood-containing elements (1), wherein the plate-shaped wood-containing composite element is ground on the surface facing away from the carrier element and the wood-containing elements, including the optionally present surface material (6), and the Zwischenraumums- rial (5) are flush on the ground side. (47) A panel-shaped wood-containing composite element producible by a method comprising the steps of: (i) placing wood-containing elements (1) on a base (4),

(ii) introducing a hardenable intermediate space material (5) containing a hardenable plastic, at least into the element spaces (3) of the wood-containing elements (1) and optionally at least partially into the space between the base (4) and the wood-containing elements (1) and optionally at least partially on the wood-containing elements (1),

(iii) allowing the hardenable material to solidify, resulting in a strong bond between the wood-containing elements (1), (iv) removing the backing (4),

(v) sanding at least the surface facing away from the backing so that the wood-containing elements (1) and the spacer material (5) are flush, the removal of the backing in step (iv) optionally being carried out by the sanding in step (v), and (vi) bonding the ground element to a support member (7).

(48) A panel-shaped wood-containing composite element according to item (47), wherein prior to step (i), a backing material (2a) containing a curable resin is applied to the backing (4) and / or in a stage prior to sanding, a surface material (6) containing a curable plastic, is applied to the wood-containing elements (1). (49) A panel-shaped wood-containing composite element according to item (47), wherein step (v) is carried out as follows:

(v) grinding the plate-shaped wood-containing composite element so that the wood-containing elements (1), including the surface material (6) optionally present on the surface of the wood-containing elements (1), and the solidified interspace material (5) are flush, or sanding of the plate-shaped wood-containing composite element, so that the solidified surface material (6) partially or completely covers the wood-containing elements (1). (50) A panel-shaped wood-containing composite element producible by a method comprising the steps of: (i) placing wood-containing elements (1) on a support element (7),

(iii) allowing the hardenable material to solidify, resulting in a strong bond between the carrier element (7) and the wood-containing elements (1) and between the wood-containing elements (1); (iv) grinding the surface facing away from the carrier element (7) so that the woody elements

(1) and the intermediate space material (5) are flush.

(51) A panel-shaped wood-containing composite element according to item (50), wherein, prior to step (i), a backing material (2a) containing a curable resin is applied to the backing (4) and / or in a step prior to sanding, a surface material (6) containing a curable plastic, is applied to the wood-containing elements (1). (52) A panel-shaped wood-containing composite element according to item (50) or (51), the method comprising the following further step:

(v) grinding the plate-shaped wood-containing composite element so that the wood-containing elements (1), including the optional surface material (6), and the solidified intermediate 5) are flush or grinding the plate-shaped wood-containing composite element so that the solidified surface material (6) covers the wood-containing elements (1) partially to completely. (53) A plate-shaped wood-containing composite member according to any one of (46) to (52), wherein the wood-containing members (1) do not contact each other. (54) A panel-shaped wood-containing composite member according to any one of (46) to (53), wherein the wood-containing members (1) are made of solid wood. (55) A panel-shaped wood-containing composite member according to any one of (46) to (54), wherein the wood-containing members (1) have a thickness of 1 to 10 mm. (56) A plate-shaped wood-containing composite member according to any one of (46) to (55), wherein the wood-containing members (1) have a thickness of 2 to 8 mm. (57) A panel-shaped wood-containing composite member according to any one of (46) to (56), wherein the wood-containing members (1) have a thickness of 2 to 5 mm. (58) A panel-shaped wood-containing composite member according to any one of (46) to (57), wherein the element spaces (3) have a width within a range selected from the group consisting of the ranges of at least 0.1 mm, at least 0.5 mm, at least 1 mm, 0.1 to 10 mm, 0.5 to 10 mm, 1 to 10 mm, 2 to 10 mm and 3 to 10 mm. (59) A panel-shaped wood-containing composite member according to any one of (46) to (58), wherein the element spaces (3) have a width of 1 to 3 mm. (60) A panel-shaped wood-containing composite member according to any one of (40) to (59), wherein at least two members of the group consisting of the base material (2a), the space material (5) and the surface material (6) are the base material or the whole composition are the same. (61) A plate-shaped wood-containing composite member according to any one of (40) to (60), wherein the base material of the base material (2a), the space material (5) and / or the surface material (6) is a synthetic resin. (62) A sheet-shaped wood-containing composite member according to any one of (40) to (61), wherein the base material of the base material (2a), the interspace material (5) and / or the surface material (6) is a two-component epoxy resin. (63) A panel-shaped wood-containing composite member according to any one of (40) to (62), wherein the base material (2a), the space material (5) and / or the surface material (6) contains a wood-containing material in addition to the plastic. (64) A sheet-shaped wood-containing composite member according to any one of (40) to (63), wherein the base material (2a), the space material (5) and the surface material (6) are identical and comprise a two-component epoxy resin and a wood-containing material. (65) The floor according to any one of (21) to (26) or a plate-shaped wood-containing composite element according to any one of (40) to (64), wherein the method allows the curable base material (2a), the curable interspace material ( 5) and / or the curable surface material (6) penetrates into the pores of the wood of the wood-containing elements (1) and is solidified therein. (66) Floor according to one of the items (1) to (26) or a plate-shaped wood-containing composite element according to one of (27) to (64), wherein between the base (4) or the carrier element (7) and the wood-containing elements ( 1) except the base material (2a) no adhesive is present or is used and between the wood-containing elements (1) except the intermediate space material (5) no adhesive is present or is used.

Unless otherwise specified in the present application, the embodiments of the first aspect of the present invention also apply to the second aspect of the present invention and vice versa.

In the present invention, the term "plate-shaped composite element (8)" means an element having a length x, a width y and a thickness z, where x and y are much larger than z, preferably x and y are independently at least five times, more preferably at least ten times, even more preferably at least twenty times greater than e.g. Preferred values of x are in the range of 50 to 200 cm, preferred values of y are in the range of 10 to 60 cm and preferred values of z are in the range of 0.4 to 1 cm. For a floor covering, exemplary values are: x = 120 cm, y = 20 cm, z = 0.4 cm. For a wall panel, exemplary values are: x = 120 cm, y = 60 cm, z = 0.6 cm. The term "plate plane" used in the present application is the plane (xy plane) formed by the length x and the width y The plan view of the plate plane is the view of the xy plane Touching in the plate-shaped composite element of the present invention adjacent wood-containing elements (1) preferably do not, but they may also touch each other at one point, at two or more points.

The "width of the element interspaces" corresponds to the distance of the wood-containing elements (1) for parallel edges of the wood-containing elements (1) .For non-parallel edges of the elements or non-linear edges, the "width" indicates the smallest distance of the elements. A width of 1 mm thus means that the elements at no point have a smaller distance than 1 mm.

Incidentally, element gaps of more than two wood-containing elements (1) or units (9) can be defined. For example, four elements or units may define a rectangular or square space. In such cases, the width of the element gaps indicates the least side length of such a gap. In the embodiment according to the invention, in which the interspaces (3) are produced by creating recesses (13) forming spaces (3) in a plate-shaped wood-containing unit (12), the recesses in the direction perpendicular to the plane of the plate not being interspersed but extend webs (14), preferably a plate-shaped wood-containing unit (12), for example, a wood plank, on one side with a saw or a milling cutter once or more times cut or milled, so that on a Side the recesses (13) and on the other side of the plate-shaped wood-containing unit (12), the webs (14) arise. One surface of the plate-shaped wood-containing unit (12) then has the recesses (13), the other surface is unchanged. This other surface can then be separated after curing of the plastic material (2) with the separating device (11) in a thickness that corresponds to the thickness of the webs (14), so that the webs (14) are removed and not directly but only wood-containing elements connected via the cured plastic material remain. The "height of the wood-containing units (9)" means, relative to the plate-shaped composite element (8) to be produced, which is determined by the length x and the width y, vertical thickness of the element and is in the present application as Height h is at least twice the thickness z of the plate-shaped composite element (8) to be produced.The composite block (10) is produced by introduction into the intermediate spaces of the wood-containing units (9) and hardening of the plastic material (2) 1), at least two plate-shaped composite elements (8) are produced from the composite block (10) .The wood-containing units (9) preferably have a height h such that 2 to 50, more preferably 5 to 20, are produced by means of the separating device (11) The wood-containing units (9) are preferably 3 to 30 cm, more preferably 4 to 20, even more preferred t 5 to 15 cm high. Beispiels- way can be made of units (9) with a height of 5 cm with a thin-section gate as a separator (1 1) about 8 plate-shaped composite elements (8) of a thickness of 4 mm. The term "separator" means any type of device that can separate a composite of resin and wood-containing elements, such as a saw.

In other words, the present invention according to the first aspect thus provides the following method:

Method for producing a plate-shaped composite element (8) comprising wood-containing elements (1) and a solid plastic material (2) in the interstices (3) of the wood-containing elements (1) and having a length x, a width y and a thickness z, where x and y are each at least ten times y, the method comprising the steps of:

(i) wood-containing units (9) are provided, more than one wood-containing unit (9) being present in the x-direction and / or more than one wood-containing unit (9) being present in the y-direction, between the wood-containing units (9) 9) intermediate spaces (3) are present and the wood-containing units (9) have a multiple of the thickness z of the plate-shaped composite element (8) to be produced,

(ii) non-solidified plastic material (2) is placed in the spaces (3) of the wood-containing units (9),

(iii) the plastic material (2) is allowed to solidify to form a composite block (10) of the units (9) and the curable plastic material (2),

(iv) the composite block (10) is optionally divided into smaller units, and (v) of the composite block (10) or the smaller units thereof with a separator (1 1) in xy-plane plate-shaped composite elements (8) of a thickness z separated, each having wood-containing elements (1) and a solid plastic material (2) in the interstices (3) of the wood-containing elements (1).

In addition, the present invention provides the following method:

A method for producing plate-shaped composite elements (8) which, in plan view of the plate plane, comprises a wood-containing element (1) having a preferred length of 20 cm to 200 cm and a preferred width of 2 cm to 20 cm, and a solid plastic material (2), which preferably has the same length as the wood-containing member (1) and a preferable width of 1 mm to 20 mm, more preferably 2 to 10 mm, on the wood-containing member (1), the method comprising the steps of: includes:

(i) a wood-containing unit (9) or a wood-containing element (1) is provided, (ii) non-solidified plastic material (2) comes into contact with the wood-containing unit (9) or the wood-containing element (1) brought

(iii) the plastic material (2) is allowed to solidify so that the wood-containing unit (9) and the curable plastic material (2) form a composite block (10) or the desired plate-shaped composite element (8),

(iv) the composite block (10) is optionally divided into smaller units, and (v) of the composite block (10) or the smaller units thereof are provided with a

Separating device (1 1) the desired plate-shaped composite elements (8) separated. In the present invention, plate-shaped elements (8) are separated from the composite block (10) with a separator (11). The separation from the composite block takes place in the plane of the plate, that is, in the plane formed by the length x and the width y. The result is a plate-shaped element (8) with a cross-section of a height z and a length x or a width y, in which wood-containing elements (1) and plastic material (2) alternate in the x-direction or y-direction and the wood-containing elements (1) and the plastic material (2) have a contact surface length of z. The composite block (10) can be divided into smaller units as needed, e.g. B. by cutting or sawing, thus easier to handle units or units that already have individual dimensions of the plate-shaped elements (8) to be produced. For reasons of efficiency, for example, a composite block (10) is produced which has a length and / or width several times the length x and / or width y of the elements (8) to be produced. Smaller units of this composite block (10) of the desired dimensions can then be obtained, for example by sawing. Another example is z-direction splitting of a composite block (10) that has a z-direction extent that is too large for thin-section gate machining. In a further embodiment of the method according to the invention, the recesses (13) are formed so that in the plate-shaped composite element (8) to be produced, the wood-containing elements

(1) remain integral with each other. This is achieved in that the recesses (13) are not formed, for example as slots, over the entire length or the entire width of the plate-shaped wood-containing unit (12) but as recesses (13) in partial areas of the plate-shaped wood-containing unit (12). be executed. For example, the recesses (13) are drilled holes or milling patterns in a wood plank. As a result, a plurality of plate-shaped elements (8) with identical patterns can be produced in a simple manner.

The webs (14) mentioned in the present application, which remain in the formation of recesses (13), serve to keep the plate-shaped wood-containing unit (12) as an integral unit after the formation of the recesses (13). This has the advantage that the bottom of the plate-shaped wood-containing unit (12) before filling the plastic material (2) in the recesses (13) must not be sealed in order to prevent the leakage of the plastic material. The webs have such a thickness that the plate-shaped wood-containing unit (12) can still be handled without breaking down and that the plastic material (2) can not escape through the webs. The webs (14) therefore usually have a thickness of 1 to 10 mm, preferably 2 to 6 mm. In an exemplary embodiment, the recesses (13) in a wood plank of 4 to 8 cm thickness, a length of 100 to 200 cm and a width of 20 to 30 cm in the longitudinal direction as slots a section width of 2 to 5 mm and a distance of 3 to 8 formed by, so that in the wood plank more, z. B. 3 to 6, slots are generated. In a particularly preferred embodiment, for example, not only webs (14) are formed when cutting or milling the recesses (13) from a wood plank. Rather, the cutting or milling is performed so that the recess (13) is not continuous in the direction of execution in the wood plank. For example, if a wood plank of 100 cm in length is cut in the longitudinal direction, the recesses are formed in a length of 98 cm so that at the beginning and at the end of the wood plank remains 1 cm of wood. As a result, and by the formation of the webs (14) can also when filling the plastic material

(2) a seal, ie a leakage protection, be waived.

The present invention also provides according to the first aspect: A method for producing a plate-shaped composite element (8) from wood-containing elements (1) and a solid plastic material (2) in the element interspaces, wherein the wood-containing elements (1) are arranged in a plane and on both surfaces of the composite plate, the wood-containing ele- ments (1) and the plastic material (2) are flush, producible by a process comprising the steps of:

(i) units (9), each containing at least a first, a second and optionally further, in the produced plate-shaped composite element (8) wood-containing elements (1) arranged one above the other, arranged one above the other with gaps (3) arranged side by side, so that the first wood-containing element (1) of a unit (9) together with the first wood-containing elements (1) of the other units (9) forms a first plane, the second wood-containing element

(1) one unit (9) together with the second wood-containing elements (1) of the other units (9) forms a second level different from the first level and the further wood-containing elements (1) optionally contained in the units (9) form further levels forming, wherein in each plane between the wood-containing elements (1) the spaces defined by the arrangement of the units (9) (3) are present,

(ii) non-solidified plastic material (2) is placed in the spaces (3)

(iv) plate-shaped composite elements (8) of the first level, the second level and each further level are separated from the composite block (10) with a separator (1 1).

The "units (9), each containing at least a first, a second and optionally further, in the produced plate-shaped composite element (8) wood-containing elements (1) arranged one above the other," are preferably solid wood pieces, such as squared timbers, boards, planks, The wood-containing elements (1) are preferably contained in the units (9) so that their dimensions in width and length correspond to the dimensions of the units (9) in width and length. 1) are preferably contained in the units (9) so that their dimensions in width and length but not in their height relative to the superposition of the wood-containing elements (1) are identical to the desired dimensions of the wood-containing elements (1) in width and length in the plate-shaped composite element (8) to be produced. In other words, from a unit (9) , for example, a square timber, with a length x, a width y and a height z, wherein a plurality of units (9) in the plane length-width side by side with spaces (3) are arranged, wood-containing elements (1) having a length x, one Width y and a height of less than z / (AnzahI the stacked wood-containing elements (l)). In the present invention, the term "floor" means, on the one hand, the floor installed in a building, the base (4) being, for example, a subfloor, eg a screed, in a building, on the other hand, the term "floor" also means a floor covering element the base (4) is part of this element and this element can be applied to a bare floor, eg screed. The pad (4) may thus be a solid floor or a plate element of any materials, eg concrete floor, any screed, wooden floor, parquet floor, laminate floor, dry screed, chipboard, OSB boards, stone floor and the like. The base (4) can also be an existing floor denbelag be, for example, a laminate floor. The floor according to the invention is then applied to, for example, an old laminate floor. The invention can thus be used for renovations, without the old flooring, which would be hazardous waste in the case of laminate, must be removed. Another advantage is that the floor according to the invention can be made so that it applies an additional layer of less than 3 mm to an old floor covering. The existing floor covering, in particular in the case of laminate, must, if appropriate, be roughened before the floor according to the invention is produced. In addition, it may be advantageous to fix the existing laminate floor on the ground, for example by screwing. The underlay (4) used in the production of the panel-shaped wood-containing composite element according to the invention can, as required, be a substrate which bonds firmly, only weakly or not, to the curable substrate material (2a). A firm connection arises z. B. chipboard or softboard. A weaker bond will occur with certain plastic films or wood-pretreated wood glue. The support member (7) may be made of any material as long as the plate-shaped wood-containing composite member can be firmly connected thereto. For example, the carrier plate is a chipboard, a plate with tongue and groove or particularly preferably a base plate equipped with a conventionally used for the parquet or laminate laying click system. The "laying" of the wood-containing elements (1) on the base (4) or the backing plate (7) described in the present application may also comprise fixing the wood-containing elements The wood-containing element consists of any wood or is composed of different woods The wood-containing element (1) used in the invention is, for example, a strip-shaped wooden element, ie a piece of flat wood The wood-containing elements (1) used in the invention are not limited to sawn elements, but may also be elements split off from a larger block or chopped or otherwise comminuted wood or bark.

If necessary, the wood-containing element (1) can be treated by other means at a suitable stage of the process according to the invention. For example, the wood may be primed, for. B. with linseed oil. The patterns of the wood-containing elements (1) in the floor, the plate-shaped wood-containing composite element or the plate-shaped element are not subject to any restriction. For example, they are stripe patterns, tile patterns, herringbone patterns, mosaic patterns, grid patterns, or braiding patterns. A lattice pattern or braiding pattern is produced in plate-shaped elements (8), for example, by selecting and arranging the units (9) in such a way that a lattice optics or braiding pattern optics are produced in plan view. For example, wood-containing units (9) with a height of 8 cm, a width of 6 cm and a length of 10 cm are arranged side by side so that four units (9) define a square space of 2 cm side length to form a braided pattern appearance. A lattice pattern arises, for example, in that wood-containing units (9) (height 8 cm, width 2 cm, length 200 cm) are arranged so that transversely to the longitudinal direction of the units strips of 2 cm alternate with strip-shaped spaces of 2 cm. Other wood-containing units (9) (height 8 cm, width 2 cm, length 2 cm) are then placed in the interspaces, so that square gaps of a side length of 2 cm arise. A plaster optics arises, for example, in that wood-containing elements (9) (height 8 cm, width 10 cm, length 10 cm) are arranged at intervals of 0.5 cm, for example, so that in plan view squares with 10 cm side length be arranged so that in plan view squares with 10 cm side length and joints with 0.5 cm arise. The manufacturing process is of course also applicable to end grain. For this, only the orientation of the wood-containing elements (9) must be changed, so that the annual rings can be seen above. In a corresponding manner, any desired patterns can be produced by the dimensions, the shape (eg square, rectangular, beveled or round in plan view) and the arrangement (eg, without joints, with narrow or wide joints) of the wood-containing units (9) and the Color and the aggregates of the curable intermediate materials (2) can be selected as desired.

The terms "base material (2a) containing a solid plastic", "intermediate space material (5) containing a solid plastic," and "surface material (6) containing a solid plastic," mean that the respective material is in the liquid state , So pourable or spreadable state or in pasty state has been brought into contact with the wood-containing elements (1) or the pad (4) or the carrier element (7) and the plastic contained in the material then polymerized and / or The term "solid plastic is to be equated with plastic solidified by polymerization and / or hardening." In this context, the term "curable" substrate material used herein means 2a), intermediate space material (5), or surface material (6), that the plastic component contained therein by polymerization un d / or crosslinking is solidifiable, but not the entire material, which may contain, in addition to the plastic component, for example, fillers such as sawdust or dyes. Accordingly, "cured" material means that the plastic component contained therein has been polymerized and / or cured. "Curable" material used in the present specification means that at the time of use of the curable material, for example by application to the substrate (4) or introducing into the element spaces (3), the plastic contained in the material has already begun to polymerize or harden and therefore the polymerization or curing progresses by itself. The curable material contains, for example and preferably a two-component epoxy resin, wherein first the two components are mixed together and this mixture is then mixed with the optionally desired additives, whereby the curable material is obtained. After combining the two components of the epoxy resin, the curable material usually remains as liquid or low viscosity for up to two hours that it can be processed without problems. The term "integral" in connection with the base material (2a), the intermediate space material (5) and / or the surface material (6) means that they are hardened or polymerized by the plastic contained therein prior to hardening or polymerizing in the When the base material (2a), the intermediate space material (5) and / or the surface material (6) are in contact at the time of curing or polymerizing the plastic, the still liquid mixes because still uncured materials, such that upon curing or polymerisation polymer chains or cross-links are formed which extend over the contact surfaces of the base material (2a), the intermediate space material (5) and / or the surface material (6) Connections between the individual plastic components contained in the base material (2a), the interstitial material (5) and / or the surface material (6) are included. Thus, the base material (2a), the intermediate space material (5) and / or the surface material (6) adhere or stick to the surface of the material. or polymerizing the plastic not only to each other, but are as an integral, ie single, in the interior covalently linked element before.

An integral connection between the base material (2a), the intermediate space material (5) and the surface material (6), in particular between the base material (2a) and the surface material (6), is made possible by the wood-containing elements (1) being thin , preferably 4 mm or thinner, and the curable base material (2a) and / or the intermediate space material (5) and / or the surface material (6) in the liquid or pasty state are contacted with the wood-containing elements (1) such that the material penetrates as far as possible into the wood-containing elements (1). Since the liquid curable material can penetrate up to several millimeters into the wood-containing elements (1), the use of thin wood-containing elements (1) in this way in the interior of the wood-containing elements (1) to a mixing of the substrate ( 2a) and / or the intermediate space material (5) and / or the surface material (6), which have penetrated from different directions in the wood-containing elements (1). By hardening or polymerizing the base material (2a) and / or the intermediate space material (5) and / or the surface material (6), then a covalent bond of the plastic, which is contained in the respective material, so that the polymers and Cross-linking of the plastic, the wood-containing elements (1) pull through and thus the substrate material (2a) and / or the space material (5) and / or the surface material (6) even through the wood-containing elements (1) can be considered as one piece. The mixing of base material (2a) and surface material (6) in the interior of the wood-containing elements (1) occurs in particular when the wood-containing elements consist of or contain end grain.

The hardened subsurface material (2a) and the hardened interspace material (5) as well as the curable surface material (6) may be the same or different in composition. The space material (5) can be filled in an amount in the spaces sufficient to fill the element spaces. During curing of the material usually reduces its volume, so that a meniscus-like arching to the contact surfaces with the plate-shaped material surface is formed. The floor thus produced can be used as such or after surface grinding of the surface. However, a larger amount of liquid material may be applied to the wood-containing member (1) so as not only to fill the element gaps, but also to form a coating layer on the member, in which case the space material (5) and the surface material (6) are identical. This embodiment can preferably be achieved when the wood-containing element (1) has at least one planar and planar surface. Transferred to a conventional wooden floor, z. As parquet floor, the substrate used in the present invention (2a) corresponds to an adhesive, the space material (5) corresponds to the Fugenkitt and the surface material (6) corresponds to the seal. In a preferred embodiment of the floor according to the invention, the base material (2a), the intermediate space material (5) and the surface material (6) are identical, at least in terms of their basic composition, ie without taking into account the additives, so that a floor is provided in which the adhesive, joint putty and Seal made of the same material. In this way, around the wood-containing elements (1) around an environment of a cast, and the wood-containing elements (1) are firmly embedded in the hardened plastic.

The plate-shaped wood-containing composite element according to the invention or the erfϊndungsgemäße floor may in addition to the wood-containing elements (1) and curable materials also contain any other elements and materials, eg. As used stones, metal and the like. If these materials prove to be problematic in terms of surface grinding, it may be preferable to use these materials so that they are still covered by a layer of the curable material after the element has been abraded.

The intermediate space material (5) to be filled can also consist of two different materials. For example, the element spaces in the element may be filled with a colored material and the element thus obtained coated with a clear material.

As the curable base material (2a), curable spacer material (5) and curable surface material (6) according to the second aspect of the invention, and plastic material (2) according to the first aspect of the invention, materials containing or constituting a polymerizable and / or curable resin are used consist of this. The plastics may independently of each other preferably be conventional resins, in particular synthetic resins. As used herein, the term "synthetic resin" refers to resins obtained by polymerization, polyaddition or polycondensation (e.g., aminoplasts, epoxies, phenolic resins), optionally modified by natural products (fatty oils, natural resins). Likewise, synthetic resins also include modified natural resins by chemical reaction (e.g., esterification, saponification). A preferred material is an epoxy resin. In the present specification, synthetic resin means in particular a two-component epoxy resin.

The base material (2a), the intermediate space material (5) and the surface material (6) "connect" the parts in contact with each material, The term "connect" in this application means that a firm sticking is effected. Thus, the curable materials serve both as an adhesive and as a visible constitution, construction and design element in the floor, the plate-shaped wood-containing composite element and the plate-shaped element.

The base material (2a), the intermediate space material (5) and the surface material (6) touch and connect wood-containing elements. This compound is formed by adding the liquid or pasty, not yet cured material, in particular synthetic resin, to the wood-containing elements and subsequent hardening of the material. Upon contact of the liquid materials with the wood-containing elements, the liquid materials penetrate into the pores and cavities contained in the wood and solidify in them. Thus, in this application, the terms mean that the base material (2a), interspace material (5) or surface material (6) is "between" or "on elements, that the respective material is at least partially also in the elements. 6) which is "on the wood-containing elements, for the most part or completely near the surface" in "the wood-containing elements. This is especially true after the sanding of the surface of the floor or plate-shaped wood-containing composite element, so that only a fraction of the material is located on the immediate surface of the element. As used herein, the term "surface material (6) on the surface of a wood-containing element" thus means "the greater part of the amount, preferably more than half, until the entire amount of surface material (6) is in the wood-containing element near its surface and the smaller part the amount, preferably less than half, until no part of the amount of the surface material (6) is on the surface of the wood-containing element ".

By penetrating and hardening the hardenable material (2a), (5) or (6) into the wood-containing elements (1), the soil is not only stabilized and fixed, but at the same time also sealed and thus more inaccessible to water and contaminants.

It is preferred that the wood-containing elements (1), especially in end grain, take up large quantities of substrate material (2a), interspace material (5) and / or surface material (6), since in this way the wood-containing elements are bound particularly strongly and swelling and shrinkage of the wood is reduced. When using end grain, it may be preferable to insert the wood-containing elements (1) into curable substrate material (2a), intermediate space material (5) or surface material (6) before carrying out the method according to the invention for producing a floor or a plate-shaped wood-containing composite element as complete as possible saturation of the wood-containing elements

(1) to reach with hardenable material. When two or three of the curable materials selected from curable base material (2a), curable spacer material (5) and curable surface material (6) are used, it is preferred that the curable materials be added at such a time interval that the first added material is not fully polymerized or hardened when the next material is added. In this way it is made possible that the material added first has already produced a certain firm connection between the parts, but nevertheless a covalent and thus firm connection with the subsequently added material is still possible. For example, the added hardenable base material (2a) may polymerize or cure for several minutes to several hours, thus bonding and fixing the base (4) and wood-containing elements (1) to some extent, so that the ground is passable is. By fixing the wood-containing elements (1) and walkability of the soil, the subsequent introduction of the intermediate space material (5) between the wood-containing elements (1) is facilitated, so that the material z. B. with a toothed spatula in the interstices (3) can be introduced without slipping the wood-containing elements (1). The resins preferably contain a hardener. Hereinafter, the term "material" means one or two or three members of the group of hardenable substrate material (2a), hardenable spacer material (5) and hardenable surface material (6), and the plastic material

(2) according to the first aspect of the invention. The material is preferably a resin having a low viscosity, for example a viscosity of less than 10,000 mPas (22 ⁰ C), more preferably less than 5,000 mPas (22 ⁰ C) and even more preferably of less than 2,000 mPas (22 ⁰ C) is. When the resin contains a hardener, the resin-hardener mixture is the hardenable material. The viscosity of the resin-hardener mixture is preferably less than 2,000 mPas (22 ⁰ C), more preferably less than 1,000 mPas (22 ⁰ C) and even more preferably less than 600 mPas (22 ⁰ C). In addition, the curable material is preferably solvent-free in order not to impair the floor or the plate-shaped wood-containing composite element. Preferably, the material is solvent-telfreies epoxy resin-hardener mixture having a viscosity of less than 1,000 mPas (22 ⁰ C), more preferably of less than 600 mPas (22 ⁰ C) and even more of at most 500 mPas (22 ⁰ C) , The epoxy resin is preferably an epoxy resin based on bisphenol A / bisphenol F, particularly preferably the epoxy resin used in the examples below. The preferably contained hardener may be a modified polyamine, more preferably the hardener used in the examples below. In addition, the above-mentioned epoxy resin preferably has a density of 1.15 g / cm ³ , and the above-mentioned hardener preferably has a density of 1.00 g / cm ³ . Further preferred properties of the above-mentioned epoxy resin are: Shore hardness D: 80 (ISO 868, EIN 53505); Tensile strength: 64 N / mm ² (DIN 53455); Compressive strength: 85 N / mm ² (DIN 53454); Flexural strength: 92 N / mm ² (DIN 53452); Martens temperature: 50 ⁰ C (DIN 53458); Linear thermal expansion coefficient: 65 x 10 ^"5 K ^{" 1} (DIN 53752).

The mixing ratio of epoxy resin and hardener is not particularly limited, but it is, especially in the above-mentioned substances, preferably at 100 parts by weight of epoxy resin to 45 parts by weight of hardener. The material to be used as the material to be filled is selected so that it can be filled at room temperature and optionally cured using a curing agent at room temperature.

The solidified material may also contain additives such as colored pigments, fillers, additional stabilizers or agents to increase the strength of the material. Other optical effects are conceivable, for example by adding substances with a glitter effect in the curable material. The wood-containing elements (1) are preferably pretreated prior to contacting with the curable material. This can be prevented, for example, that the curable material penetrates too deeply into the pores of the wood. This is particularly a problem when the solidified material is colored. The pretreatment is carried out at least on a part, preferably the front side of the wood, at which the pores of the medullary rays are exposed to the penetration of the filled material. This so-called stripping or priming can be carried out with a lacquer, resin or the like conventionally used for this purpose. Preferably, the stripping agent is clear so that it is optically neutral.

After the optional pretreatment of the wood-containing elements (1) they are placed in an embodiment of the invention on a smooth surface and then filled. The smooth base is, for example, a plastic film, from which the plate-shaped wood-containing composite element after filling and solidification of the resin can be easily peeled off or removed again. In another embodiment of the invention, on one side of the plate-shaped wood-containing composite element, a cover, such as a wood panel, for example, applied by gluing, and then filled with the curable material. In the present invention, the term "filling" of the material includes pouring a low viscosity material or, if the viscosity of the material is correspondingly high, applying the material with an adjuvant, such as a spatula, or a suitable device. The solidified material can be cured subsequently or simultaneously with the solidification. This can be done by curing at room temperature for several hours to a few days in a preferred embodiment in which an epoxy resin is used. In this case, a hardener is preferably used. However, any other method of curing resins may be used. After curing of the resin, in one embodiment of the invention, the bottom or the plate-shaped wood-containing composite element is ground flat. Incidentally, when the resin has been poured in excess over the volume of the element gaps so that one side of the wood-containing members has been completely covered with a resin layer, the material of the wood-containing members can be re-exposed. This results in a surface of the bottom or plate-shaped wood-containing composite element, on which the filled resin and the wood-containing elements alternate. In another embodiment of the invention, only a portion of the resin layer is abraded so that the surface of one side of the bottom or plate-shaped wood-containing composite element is made of a resin layer. The plastic material (2) according to the first aspect of the invention and the hardenable sub-base material (2a), the curable interspace material (5) and the curable surface material (6) may independently contain additives. Such fillers are, for example, quartz sand, glass beads, wood chips or sawdust. In a preferred embodiment, the base material (2a) contains quartz sand and the intermediate space material (5) and optionally the surface material (6) sawdust as filling material. The space material (5), particularly when it is filled not only in the element gaps of the wood member but also formed as a coating over the wood member, may preferably contain additional abrasion resistance enhancing agents and the like. In practicing the composite elements, care must be taken that, depending on the intended use of the composite element, certain physical properties of the element (1) and the filled material are similar. For example, the coefficients of thermal expansion should be similar so that with temperature variations there are no cracks between the different materials. The hardening of the resin creates a strong bond between the wood-containing element and the resin. The cured resin stabilizes the wood-containing element. This makes it possible to significantly reduce its strength during grinding of the composite element and still obtain a stable floor. For example, the floor can be stably made of a solid wood element and an epoxy resin in a low thickness of 2 mm. The term "surface grinding" used in the present application includes both the removal of solidified hardenable material from the surface of the wood-containing elements (1) and the sanding of the wood-containing elements (1).

Examples

In the following examples, a commercial epoxy resin based on bisphenol A / bisphenol F having the following composition is used: bisphenol A-epichlorohydrin resin 40 to 60%, bisphenol F epoxy resin less than 30%, hexanediol diglycidyl ether less than 20%.

The hardener used is a modified polyamine of the following composition: benzyl alcohol 25 to 50%,

3-aminomethyl-3,5,5-trimethylcyclohexylamine 25 to 50%, trimethylhexamethylenediamine 2.5 to 10%. example 1

A beechwood screed (wood moisture: about 10%), 1 m long, 20 cm wide and 5 cm thick, was slit lengthwise with slits having a width of about 2.5 mm and a depth of 4.5 with a circular saw cm provided at a distance of 7 cm. The slots were not made consistently so that at each end of the board there was an approximately 0.5 cm wide unslotted area. The two-component epoxy resin described above was mixed together according to the instructions and stirred for about 5 minutes. The resin was then filled in the slots. After solidifying the resin after 48 hours, about 2 cm of the resulting composite block was cut at both ends so that the unslotted portions were removed. The composite block was then cut with a thin-section gate into plate-shaped elements with a thickness of 4.5 mm, a length of 95 cm and a width of 20 cm, so that the individual wood elements in the plate-shaped element had a width of 2, 5 mm was held together. Breaking tests showed that the plate-shaped element never broke at a contact surface of wood and resin and never in the resin groove, but always in the wood element. The joints across the resin groove were thus more stable than the wood itself. The plate-like elements were conventionally applied as cover layers to conventional two-layer parquet supports. The properties of the obtained elements did not differ from those of conventional elements, which were made without resin coating layers.

Example 2 A plastic film of 1.50 m in length, 40 cm in width and 0.2 mm in thickness was laid on a smooth surface. Then a tear-resistant paper web was laid. 3 beech wood (wood moisture: about 10%) of a length of 1.20 m, a width of 6 cm and a thickness of 5 cm were glued side by side at a distance of 2.5 mm with wood glue on the paper. Then, the film was turned over and fixed to the outer sides of the squared timbers so that the film formed a tight and tight tub around the block of squared lumber adhered to the paper. The two-component epoxy resin described above was mixed together according to the instructions and stirred for about 5 minutes. The resin was then poured into the gaps between the squared timbers. After solidifying the resin after 48 hours, the composite block was then cut with a thin-section gate into plate-shaped elements 4.5 mm thick, 120 cm long and about 18.5 cm wide, so that the individual wood elements in the plate-shaped Element was held together via a resin joint of a width of 2.5 mm.

The properties of the obtained plate-shaped members were the same as those of the elements obtained in Example 1.

Example 3 A beech wood plank (wood moisture: about 10%) was cut on pieces of flat wood 10 m long, 5 cm wide and 5 mm thick. The pieces of flat wood were glued on a surface of 60 cm x 50 cm at intervals of about 5 mm on a plastic mesh of a thickness of 1 mm. The two-component epoxy resin described above was mixed together according to the instructions and stirred for about 5 minutes. Then quartz sand was added to part of the resin batch until the paste was pasty and spreadable. The pasty mass was applied with a spatula various support plates, namely a concrete slab, a Fermacell slab and a 2 cm thick chipboard, applied in a thickness of about 1 mm. Then the net with the glued pieces of wood was placed on the support plates, and the interstices of the wood pieces were filled with the remaining resin batch added with commercial microfine glass beads to increase its viscosity. After hardening the resin after 48 hours, the surfaces of the resulting composite panels were sanded and sealed with various parquet paints and parquet oils. Thereafter, the strength and the resistance of the obtained elements were tested, for example, by repeated application of water and drying and by temperature changes of - 20 ⁰ C to + 40 ⁰ C; in addition, by heavy mechanical stress, the elements were designed three months immediately after the front door of a busy building.

The tests showed that none of the conditions tested led to cracks or cracks in the wood elements, the resin joints or the contact surfaces of wood and resin.

The results show that both the connection of the wood elements to the support plates and the connection of the resin joints to the wood elements are very strong and that any swelling and shrinkage of the wood elements was either mitigated or counterbalanced by the resin.

Claims

A method of manufacturing a plate-shaped composite element (8) comprising in the plan view of the plate plane wood-containing elements (1) and a solid plastic material (2) in the interstices (3) of the wood-containing elements (1), the method comprising the following steps comprising: (i) providing wood-containing units (9) with spaces (3) between the individual wood-containing units (9),

(ii) non-solidified plastic material (2) is placed in the interspaces (3), (iii) the plastic material (2) is allowed to solidify, so that from the wood-containing units (9) and the curable plastic material (2) Composite block (10) is formed, (iv) the composite block (10) is optionally divided into smaller units, and

(v) from the composite block (10) or the smaller units thereof are separated with a separator (1 1) plate-shaped composite elements (8) in the plan view of the plate plane wood-containing elements (1) and a solid plastic material (2) in the Intermediate spaces (3) of the wood-containing elements (1).

2. The method of claim 1, wherein the wood-containing units (9) are arranged so that the gaps (3) arise.

3. The method according to claim 1, wherein the interspaces (3) are produced by creating gaps (13) forming interstices (3) in a plate-shaped wood-containing unit (12), wherein the recesses in the direction perpendicular to the plane of the plate do not pass through extend the entire plate-shaped unit (12), but webs (14) remain.

4. The method of claim 3, wherein the webs are removed in that a plate-shaped element having the webs (14) after curing of the plastic material (2) from the composite block (10) with the separating device (1 1) is separated.

5. A method according to any one of the preceding claims, wherein the spaces (3) have a width expressed as a minimum distance between the wood-containing elements (1) selected from the group consisting of the ranges of at least 0.1 mm, at least 0.5 mm, at least 1 mm, 0.1 to 30 mm, 0.5 to 10 mm, 1 to 10 mm, 2 to 10 mm, and 3 to 10 mm, and wherein the wood-containing elements (1) has a length , which is selected from the ranges of 5 cm to 200 cm, 10 to 100 cm, 10 to 30 cm and 20 to 40 cm, and have a width, which ranges from 1 cm to 20 cm, 2 to 10 cm and 3 to 8 cm is selected.

6. A method according to any one of the preceding claims, wherein with the separating device (1 1) plate-shaped composite elements (8) are separated in a thickness selected from the group consisting of the ranges of 2 to 20 mm, 2 to 10 mm, 4 to 8 mm and 4 to 6 mm.

7. The method according to any one of the preceding claims, wherein the elements (9) have a height such that with the separating device (1 1) from the composite block (10) at least two plate-shaped

Composite elements (8) of a thickness specified in claim 5 can be produced.

8. The method of claim 7, wherein the elements (9) have a height of 4 to 20 cm.

9. The method according to any one of claims 4 to 8, wherein the recesses (13) are formed so that in the plate-shaped composite element (8) to be produced, the wood-containing elements (1) after the removal of the webs (14) remain integrally connected.

10. The method according to any one of the preceding claims, wherein the wood-containing elements (1) consist of solid wood.

1 1. A method according to any one of the preceding claims, wherein the plastic material (2) is a synthetic resin.

12. The method of claim 1 1, wherein the plastic material (2) is a two-component epoxy resin.

13. Plate-shaped composite element (8), producible by a method according to one of claims 1 to 12.

Plate-shaped composite element comprising wood-containing elements (1) and in the element interspaces a plastic material (2), characterized in that the wood-containing elements (1) are arranged in the plane of the plate and on the upper and / or the lower surface of the plate-shaped composite element the wood-containing elements (1) and the plastic material (2) are flush.

15. Use of the plate-shaped composite element according to claim 13 or 14 as a floor.