WOOD COMPOSITE BLOCK, TRANSLUCENT WOOD VENEER AND METHOD FOR PRODUCING THE SAME

Abstract

The invention relates to a multilayer wood composite block comprising a plurality of wood layers, wherein at least 5 wood layers of the plurality of wood layers have a layer thickness of 0.05 to 1 mm; a plurality of plastic layers, wherein at least 5 plastic layers of the plurality of plastic layers consist of translucent and/or transparent plastic and have a layer thickness of 0.05 to 1 mm; and a plurality of adhesive layers; wherein the wood and/or plastic layers are arranged in a superimposed manner; and wherein the adhesive layers are arranged between successive wood and/or plastic layers and bond them together; and a multilayer wood veneer.

Claims

1-17. (canceled)

18. Multi-layer wood composite block comprising a plurality of layers of wood, wherein at least 5, preferably at least 10 and more preferably at least 15 wood layers of the plurality of wood layers have a layer thickness of 0.05 to 1 mm, preferably 0.1 to 0.75 mm and more preferably 0.15 to 0.5 mm; a plurality of plastic layers, wherein at least 5, preferably at least 10 and more preferably at least 15 plastic layers of the plurality of plastic layers consist of translucent and/or transparent plastic and have a layer thickness of 0.05 to 1 mm, preferably 0.1 to 0.75 mm and more preferably 0.15 to 0.5 mm; and a plurality of adhesive layers; wherein the wood and/or plastic layers are arranged in a superimposed manner; and wherein the adhesive layers are arranged between successive wood and/or plastic layers and bond them together, and wherein the adhesive layers in the cured state have a hardness of at least 70 Shore A, determined in accordance with DIN EN ISO 868: 2003-10, and/or a hardness of at least 20 Shore D, determined in accordance with DIN EN ISO 868: 2003-10.

19. Multi-layer wood composite block according to claim 18, wherein at least 5, preferably at least 10, more preferably at least 15 wood layers of the plurality of wood layers and at least 5, preferably at least 10, more preferably at least 15 plastic layers of the plurality of plastic layers are arranged alternately.

20. Multi-layer wood composite block according to claim 18, wherein a colour shift upon transillumination by a white LED of at least 5, preferably at least 10, more preferably at least 15 plastic layers of the plurality of plastic layers essentially lies on a black body curve; and/or wherein at least one of the wood layers, the plastic layers and/or the adhesive layers is electrically conductive; and/or wherein at least one intermediate layer is arranged between the plurality of wood layers and/or plastic layers, wherein the at least one intermediate layer is preferably electrically and/or thermally conductive.

21. Multi-layer wood composite block according to claim 18, wherein the plastic of at least 5, preferably at least 10, more preferably at least 15 and most preferably all plastic layers of the plurality of plastic layers is selected from the group consisting of polyolefins, polycarbonates, polyesters, polyurethanes, polyphenylsulphides, epoxides and combinations thereof, preferably polycarbonates; and/or wherein at least 5, preferably at least 10, more preferably at least 15 and most preferably all plastic layers of the plurality of plastic layers consist of plastic film, preferably polycarbonate film.

22. Multi-layer wood composite block according to claim 18, wherein the wood composite block has a) a total carbon emission (TVOC, Total Volatile Organic Compounds) of less than or equal to 50 μg carbon/g determined according to VDA 277, and/or (b) a content of volatile organic compounds (VOC) of less than or equal to 100 mg/kg and semi-volatile organic compounds (FOG—Fogging) of less than or equal to 250 mg/kg determined in accordance with VDA 278; and/or (c) a formaldehyde emission value of less than or equal to 3 mg/kg determined in accordance with VDA 275.

23. Multi-layer wood composite block according to claim 18, wherein the adhesive layers are translucent and/or transparent; and/or wherein the adhesive layers may be coloured; and/or wherein the adhesive layers are temperature-resistant up to 180° C.

24. Multi-layer wood veneer, comprising: a plurality of layers of wood, wherein at least 5, preferably at least 10 and more preferably at least 15 wood layers of the plurality of wood layers have a layer thickness of 0.05 to 1 mm, preferably 0.1 to 0.75 mm and more preferably 0.15 to 0.5 mm; a plurality of plastic layers, wherein at least 5, preferably at least 10 and more preferably 15 plastic layers of the plurality of plastic layers consist of translucent and/or transparent plastic and have a layer thickness of 0.05 to 1 mm, preferably 0.1 to 0.75 mm and more preferably 0.15 to 0.5 mm; and a plurality of adhesive layers; wherein the wood layers and/or plastic layers are arranged in a superimposed manner; and wherein the adhesive layers are arranged between successive wood layers and/or plastic layers and bond them together, and wherein the adhesive layers in the cured state have a hardness of at least 70 Shore A, determined in accordance with DIN EN ISO 868: 2003-10, and/or a hardness of at least 20 Shore D, determined in accordance with DIN EN ISO 868: 2003-10.

25. Multi-layer wood veneer according to claim 24, wherein the multi-layer wood veneer has a thickness between 0.1 and 2.0 mm, preferably between 0.2 and 1.5 mm, more preferably between 0.3 and 1.0 mm and even more preferably between 0.3 and 0.8 mm; and/or wherein at least 5, preferably at least 10, more preferably at least 15 wood layers of the plurality of wood layers and at least 5, preferably at least 10, more preferably at least 15 plastic layers of the plurality of plastic layers are arranged alternately.

26. Multi-layer wood veneer according to claim 24, wherein a colour shift upon transillumination by a white LED of at least 5, preferably at least 10, more preferably at least 15 plastic layers of the plurality of plastic layers essentially lies on a black body curve; and/or wherein at least one of the wood layers, the plastic layers and/or the adhesive layers is electrically conductive; and/or wherein at least one intermediate layer is arranged between the plurality of wood layers and/or plastic layers, wherein the at least one intermediate layer is preferably electrically and/or thermally conductive.

27. Multi-layer wood veneer according to claim 24, wherein the plastic of at least 5, preferably at least 10, more preferably at least 15 and most preferably all plastic layers of the plurality of plastic layers is selected from the group consisting of polyolefins, polycarbonates, polyesters, polyurethanes, polyphenylsulphides, epoxides and combinations thereof, preferably polycarbonates; and/or wherein at least 5, preferably at least 10, more preferably at least 15 and most preferably all plastic layers of the plurality of plastic layers consist of plastic film, preferably polycarbonate film.

28. Multi-layer wood veneer according to claim 24, wherein the wood veneer has (a) a total carbon emission (TVOC—Total Volatile Organic Compounds) of less than or equal to 50 μg carbon/g determined in accordance with VDA 277, and/or (b) a content of volatile organic compounds (VOC) of less than or equal to 100 mg/kg and semi-volatile organic compounds (FOG—Fogging) of less than or equal to 250 mg/kg determined in accordance with VDA 278; and/or (c) a formaldehyde emission value of less than or equal to 3 mg/kg determined in accordance with VDA 275.

29. Multi-layer wood veneer according to claim 24, wherein the adhesive layers are translucent and/or transparent; and/or wherein the at least one adhesive layer is colourable; and/or wherein the at least one adhesive layer is temperature-resistant up to 180° C.

30. Method for producing a multi-layer wood composite block according to claim 18, comprising the steps of: a) providing a plurality of plastic layers and dry wood layers; b) gluing the plastic layers and dry wood layers together.

31. Method for producing a multi-layer wood composite block according to claim 30, wherein the individual wood layers are layered on top of and/or next to one another using a die, the die being designed in such a way that it prevents the wood layers from slipping.

32. Method for producing a multi-layer wood veneer comprising cutting a multi-layer wood composite block according to claim 18 into multi-layer wood veneers.

33. Method for producing a multi-layer wood veneer according to claim 32, wherein the wood composite block is sawn or sliced, preferably sawn, into multi-layer wood veneer; and/or wherein the processing, in particular the cutting of the multi-layer wood composite block, is carried out in the dry state.

34. Wood veneer obtained by the method for producing a multi-layer wood veneer according to claim 32.

Description

[0108] The invention and the technical field will be explained in more detail below with reference to the figures. It should be noted that the invention is not intended to be limited by the embodiments shown. In particular, unless explicitly shown otherwise, it is also possible to extract partial aspects of the facts explained in the figures and combine them with other components and findings from the present description and/or figures. In particular, it should be noted that the figures and especially the proportions shown are only schematic. Identical reference signs designate identical subject matters, so that explanations from other figures can be used as a supplement if necessary. Shown are:

[0109] FIG. 1 Schematic representation of a multi-layer wood composite block according to the invention.

[0110] FIG. 1 shows a wood composite block according to the invention. The wood composite block shown comprises a plurality of wood layers (1 or 1a, 1b, . . . ) and a plurality of plastic layers (2 or 2a, 2b, . . . ). Each of the layers (1a, 1b, . . . ) and (2a, 2b, . . . ) has a thickness (dx with x=1a, 1b, . . . 2a, 2b, . . . ), wherein (dx) can be chosen for each type of layer (1) and (2) as well as for each individual layer (1a), (1b), (1c) independently of the thickness (dx) of the other layers.

[0111] Only one plastic layer (2) can be provided between two wood layers (1a, 1b), by means of which the wood layers (1a, 1b) are glued together. This plastic layer (2) then forms a visible line element in the finished multi-layer wood veneer. Optionally, the plastic layer (2) can be coloured to make further design alternatives accessible.

[0112] The layers (1a, 1b, . . . ) and (2a, 2b, . . . ) are connected to each other by adhesive layers (not shown).

LIST OF REFERENCE SIGNS

[0113] 1 wood layer [0114] 2 plastic layer