Structure with Honeycomb Core

Abstract

A honeycomb core construction that includes at least two honeycomb cores and a connection layer that is disposed between the honeycomb cores. The connection layer is configured so as to be gas-permeable, and has an adhesive for adhesively bonding to the honeycomb cores only in a region of the webs of the honeycomb cores.

Claims

1-17. (canceled)

18. A honeycomb core construction, comprising: at least two honeycomb having webs; and a connection layer having a gas-permeable structure that is disposed between the honeycomb cores, the connection layer having an adhesive for adhesively bonding to the honeycomb cores only in the region of the webs.

19. The honeycomb core construction of claim 18, wherein the honeycomb cores are adhesively bonded to the connection layer only at ends of the web.

20. The honeycomb core construction of claim 18, wherein, in certain zones of at least one of the honeycomb cores, ends of the webs that face away from the connection layer, are compressed.

21. The honeycomb core construction of claim 20, wherein, in the same zone of the at least one of the honeycomb cores, ends of the webs that face the connection layer are not compressed.

22. The honeycomb core construction of claim 18, wherein the honeycomb cores are configured so as to be dissimilar in terms of shape, size, alignment, and/or material composition.

23. The honeycomb core construction of claim 18, wherein the webs of at least one of the two honeycomb cores, at least in zones, is orientated in a manner not correspond to 90 degrees.

24. The honeycomb core construction of claim 18, wherein the connection layer comprises a fiber material.

25. The honeycomb core construction of claim 18, wherein the connection layer comprises a fiber material of varying lengths.

26. The honeycomb core construction of claim 18, wherein the connection layer comprises a fiber material of varying lengths that is reinforced with nanoparticles.

27. The honeycomb core construction of claim 18, wherein the honeycomb cores comprises paper cores, or cores from plastics, metal, wood, or foam.

28. The honeycomb core construction of claim 18, wherein the webs have a honeycomb-shaped arrangement, or an undulated arrangement, or are disposed in a circular, triangular, rectangular, square, trapezoidal, or polygonal manner.

29. A method for producing a honeycomb core, the method comprising: providing at least two honeycomb cores having webs, and a connection layer having a gas-permeable structure; and joining the honeycomb cores with the connection layer disposed therebetween in a stack.

30. The method of claim 29, further comprising, before joining the honeycomb cores, applying an adhesive to ends of the web ends.

31. The method of claim 30, wherein the adhesive is applied by rolling, spraying, brushing, or immersing

32. The method of claim 29, further comprising, before joining the honeycomb cores, applying an adhesive to the connection layer in a region of ends the web.

33. The method of claim 32, wherein the adhesive is applied by rolling, spraying, brushing, or immersing.

34. The method of claim 29, further comprising, after joining the honeycomb cores: covering the stack, on at least one side thereof, with dry fibrous material; and soaking, spraying, and/or wetting the stack with a matrix material.

35. The method of claim 34, further comprising, after soaking, spraying, and/or wetting the stack: press-molding the stack such that the webs are at least partially compressed.

36. The method of claim 29, further comprising, after joining the honeycomb cores: covering the joined honeycomb cores, on at least one side thereof, with dry fibrous material that has been pre-impregnated with a matrix material.

37. A sandwich component, comprising: a honeycomb core construction that has at least two honeycomb having webs, and a connection layer having a gas-permeable structure that is disposed between the honeycomb cores, the connection layer having an adhesive for adhesively bonding to the honeycomb cores only in the region of the webs; and a fibrous material that is sheathed over at least one side of the honeycomb core construction, wherein the fibrous material is impregnated with a matrix.

Description

DRAWINGS

[0039] The invention will be described in an exemplary manner hereunder with reference to the drawing in which

[0040] FIG. 1 shows a three-dimensional illustration of a honeycomb core construction according to the invention.

DESCRIPTION

[0041] A honeycomb core construction according to the invention is illustrated in the figure. The honeycomb core construction comprises two honeycomb cores 1 and 2, and a connection layer 3 which is disposed between the honeycomb cores 1, 2.

[0042] The honeycomb cores 1, 2 are paper honeycomb cores in a honeycomb structure, that is to say having hexagonal cells, wherein the two honeycomb cores 1, 2 are configured so as to be mutually dissimilar in that the honeycomb core 1 has a honeycomb size that is different to that of the honeycomb core 2.

[0043] The connection layer 3 is used as an intermediate layer for double-sided adhesive bonding, such that the connection layer 3 on one side is adhesively bonded to the honeycomb core 1, and on the second side is adhesively bonded to the honeycomb core 2.

[0044] On the connection layer 3, adhesive is only present in the region of the webs of the honeycomb cores 1, 2. There, the ends of the webs of the honeycomb cores 1, 2 are adhesively bonded to the connection layer 3.

[0045] The connection layer 3 is, for example, a non-woven, a natural fiber (for example, a flax fiber, hemp, bamboo, etc.), glass fiber, or carbon fiber, and in any case is configured so as to be gas-permeable. On account thereof that adhesive that could prevent the passage of gas is not applied to the connection layer 3 in a planar manner, an exchange of air and thus an equalization of pressure remains possible between the honeycomb cores 1, 2.

LIST OF REFERENCE SIGNS

[0046] 1 Honeycomb core

[0047] 2 Honeycomb core

[0048] 3 Connection layer