WO2012159983A1

WO2012159983A1 - Honeycomb element for insulating

Info

Publication number: WO2012159983A1
Application number: PCT/EP2012/059247
Authority: WO
Inventors: Gerd NIEMÖLLER; Mark Szymanski; Kaspar Schindler
Original assignee: Niemoeller Gerd; Mark Szymanski; Kaspar Schindler
Priority date: 2011-05-25
Filing date: 2012-05-18
Publication date: 2012-11-29
Also published as: EP2714385A1; DE102011050632A1

Abstract

The invention relates to a honeycomb element for insulating, comprising a plurality of honeycombs, which comprise a honeycomb body (21) and a cover (11, 36) at each open end of the honeycomb, wherein each honeycomb is evacuated.

Description

Honeycomb element for insulation

The invention relates to a honeycomb element for insulation according to the preamble of claim 1 and a method for producing the honeycomb element according to claim 6.

PRIOR ART Various insulating elements are known and commonly used in the prior art.

Conventional insulating elements are known in the form of mineral wool, polystyrene and in the form of evacuated insulation elements and in use, as used for example in DE 10059453 A1. An advantage of such evacuated insulation elements is the fact that the thermal conductivity is minimized by the vacuum used. The known from the prior art evacuated insulation elements have several disadvantages. Thus, the available evacuated insulation elements are very expensive to manufacture and procurement. Furthermore, they can not be tailored on site, eg at a construction site, not subsequently. Furthermore, conventional evacuated insulation elements can only be manufactured in small dimensions, the project-related elements being made to order and thus very expensive. A mass production is not possible. A particular disadvantage is the fact that the vacuum-tight outer shell is extremely sensitive. Installation can only be carried out by specially trained personnel. In addition, the known from the prior art evacuated insulation elements need a protective cover in turn to protect the vacuum-tight envelope. The known evacuated insulation elements consist of a pressed core material that is wrapped with a high-barrier film. The shell is evacuated and welded. The enveloping material is typically provided with aluminum vaporization to prevent diffusion and to reflect the infrared (IR) radiation. If the wrapping film is damaged, the entire insulating element is unusable. The wrapping film is very thin and delicate.

In addition to the insulating element from DE 10059453 A1, an insulating element in the form of a so-called vacuum insulating panel according to DE 297 1 1 769 U1 is also known. There, a Wärldämmelent is described, which with two spaced in the heat transfer direction walls, between which the strongest possible negative pressure (Vakkum) is, the special feature is that the two walls are held by a solid with niedriegem specific gravity at a distance and the solid from a film containing the negative pressure, is tightly enclosed. As suitable filling materials, EP 0 892 120 A2 mentions expanded glass and / or foam glass. In addition, open-cell extruded polystyrene or polyuretan foams as well as fumed silica are used. In the prior art, moreover, DE 199 15 31 1 A1 describes which different types of plastics and plastic films are used for insulation in vacuum insulation panels. The disclosure of DE 199 15 31 1 A1 should also be explicitly included in the description.

A disadvantage of the evacuated insulation elements of the prior art is the fact that the enveloping film can be easily injured. Due to the injury of the wrapping foil, the evacuation is canceled and the insulating element has no more insulating effect.

The use of so-called evacuated insulation elements is, for example. In the Bavarian Center for Applied Energy e. In the façade refurbishment described there, it has proved to be disadvantageous, inter alia, that evacuated insulation elements can hardly be adapted on site, rather, virtually every corner of a window, each recess for one The craftsmen on site had no opportunity to make a corresponding fine adjustment, as can be done, for example, in the case of polystyrene on site Polystyrene is then brought by cutting or sawing simply in the desired shape is not possible in the case of the evacuated insulating elements known from the prior art.The insulating elements described in DE 43 39 435 A1 also have the same disadvantage. The prior art also refers to WO 97/1 1842 A1 and US Pat WO 01/66864 A1, where there are various Measures described to reduce the risk of damage to evacuated insulation elements. However, the solutions shown there do not reveal a satisfactory result. Rather, it is attempted to protect the insulating elements ansich by appropriate enclosures of evacuated insulation elements. At the basic slight vulnerability of the outer shell of the insulating elements does not address this problem solution.

Finally, attention is drawn to DE 10 2007 035 851 A1. There is a vacuum insulation panel with a core with insulating cavities and the core to the environment towards tight final cover layers, the cavities of the core are formed by mutually gas-tight closed chambers that extend together with their walls or partitions from one cover to another cover layer and are formed from the walls or partitions and the cover layers.

TASK

In view of the existing problems in the prior art, the present invention seeks to provide an evacuated insulating element, which should be inexpensive to manufacture and less time consuming. In addition, the created evacuated insulation elements to the site without much effort to the particular circumstances can be adjusted. Finally, an insulating element is to be created, which is resistant and can continue to develop a damping effect even with partial loss of the vacuum.

SOLUTION OF THE TASK To achieve the object, the characterizing part of claim 1 and of the method according to claim 6. The solution of the inventive task is to provide a highly insulating honeycomb element for insulation, in which each cell forms a single vacuum chamber. The honeycomb element thus gets completely new properties, such as subsequent trimming without significantly reducing the insulating performance, such as self-supporting, as can be installed without protective devices, such as partial penetration of the cover layer by nails, etc. do not damage the whole element, but only a cell. A erfindungsegemässes honeycomb element for insulation is easy to process by untrained users and adapt to the local conditions.

No measure to curb global warming is as efficient as insulating houses. The insulation market has now become a megamarket. There are now a variety of insulation materials, but none with the same insulation performance as evacuated insulation elements. Already with 50mm - 60mm wall thickness evacuated insulation elements reach a heat transfer coefficient (U-value), which reaches the so-called passive house standard. This standard means that the houses basically do without conventional heating. Classic insulation materials require up to 500mm thick insulation. The extreme insulation performance and the resulting low wall thickness, make the evacuated insulation elements so interesting in the renovation of existing houses. There are also numerous interesting applications for high insulation in industry. The new honeycomb elements are completely different in construction from the conventional evacuated insulation elements. Here, a very thin, highly rigid and well insulating honeycomb structure is used. The honeycombs are filled with a material that encloses the individual air molecules and thus limits their freedom of movement. The pore diameter is in the range of a few hundred nanometers. Thereafter, the honeycombs are evacuated and provided with an upper and lower cover in the form of a double-sided cover layer. The double-sided cover layers are only for better distinction in the context of the application referred to as upper and lower cover, in order to make a simpler distinction in the description of an embodiment can. Ultimately, it does not matter to "top" or "bottom" because they are respective topcoats that are placed opposite each other on the honeycomb.

In order to make the honeycomb elements particularly diffusion-tight, a high-barrier film is pressed in during honeycomb production. The complete honeycomb structure is additionally provided with a high-barrier surface. In order to bond the cover layers to the honeycomb structure in a diffusion-blocking manner, they are provided with a diffusion-blocking bond in the vacuum chamber. The glue is sealing and mechanical connection at the same time. The high-barrier film is in a preferred embodiment, a non-metallic diffusion coating based on SiOx. By contrast, a metallized film is disclosed in the prior art, which serves as an additional thermal bridge on the one hand and poses major problems in later recycling. Due to the non-metallic diffusion coating in the form of the Hochsperrfolie it comes to a diffusion braking. Specifically, this means that the cell-shaped arrangement with sealed individual volumes substantially slows the diffusion, as pressure steps from cell to cell arise. This eliminates the requirement for an absolute gas-tightness of the diffusion barrier. Cost-effective diffusion barriers, for example from the packaging industry, can be used. The inner cells show no pressure increase even after a very long time.

A special challenge is the honeycomb structure, on the one hand it has to withstand the pressure of the atmosphere and on the other hand its scaffolding line may only be very small so that the vacuum insulation effect is not lost. Thus, honeycomb elements are made of metallic materials. The Honeycombs must be made of poorly heat-conductive plastic. Thermoplastics are excreted because they begin to flow under pressure and their manufacturing processes allow only relatively thick honeycomb webs. If the webs are relatively thick increases their mass and thus their thermal conductivity.

The inventive honeycomb elements are therefore made of thermosetting plastics. This type of plastic offers a high load capacity even at very low web thicknesses without them beginning to deform under continuous load.

A honeycomb element according to the invention is designed such that each honeycomb forms a single vacuum chamber. This has the advantage of obtaining a durable insulating element, which is also zuschneidbar.

Such a honeycomb is a core material made of thermosetting plastic material. Thermosetting material has the advantage that it is both durable and has a poor heat transfer coefficient, meaning that it conducts heat poorly.

The honeycomb element is preferably pressed under heat and pressure. As a result, honeycomb bodies are produced with small web thicknesses at high load absorption.

The material of the walls of the honeycomb element consists of two outer layers and an inner Hochsperrfolie. The material is made accordingly from the two outer layers and the inner high-barrier film. Outside means here that the high-barrier film are enclosed by the layers similar to a sandwich structure. Here, the layers and the high-barrier film enter into a fixed bond. Another embodiment of a honeycomb element according to the invention is designed in such a way that an additional diffusion-proof envelope is present in the interior of the honeycomb. The purpose of the high-barrier film, as well as the additional coating, is to limit diffusion in such a way that, together with the effect of gas migration from cell to cell, a long service life is created.

The inventive honeycomb is glued diffusion-tight with a first cover. The first cover serves to close a first opening of the honeycomb. A conventional honeycomb has an opening at each end. First, the first opening is closed by the first cover. This creates a honeycomb in which the walls, together with the first cover, lead to the formation of a vessel. Later, the second opening is closed by a second cover, whereby the honeycomb is closed in its entirety. The second cover is glued diffusion-tight with the honeycomb.

Furthermore, the honeycomb is preferably filled with a highly insulating nanoporous filling medium. This happens in the context of the manufacture and before the final closure of the honeycomb. This nanoporous filling medium preferably consists of fumed silica, airgel or other nanoporous materials that are porous. Compared to the prior art, which uses only microporous filling media, nanoporous filling media offer the advantage of an improved insulating effect. In addition, however, other filling media come into consideration, which are suitable for Weglängenreduktion.

The nanoporous filling medium used also has the additional advantage that because of the supporting structure of the honeycomb elements, no pressing of the filling medium is required any more. The filling material is filled in as bulk material and slightly compressed and vented by vibration. In another embodiment, the filling medium is welded into perforated bags. These bags can then be filled into the individual honeycombs. In this way, the filling medium can be pre-potted. The advantage here is the fact that no unwanted dust arises, which settles at undesirable sites.

In another embodiment, the filling medium is pressed into portions and bound, wherein the portions have the geometry of the cell interior. The filling material prepared in this way can simply be inserted into the cell for filling, eliminating the need for powder handling.

Preferably, an additional perforated lid for the honeycomb can be provided which serves to prevent the filled filling medium from re-emerging until a final closure of the honeycomb is achieved.

The filling medium according to the invention may preferably be mixed with fiber in order to minimize trickling or dusting during cutting.

In a particularly preferred embodiment of a honeycomb element according to the invention, the filling medium should not be compressed. It should therefore be able to be introduced into the honeycomb in normal uncompressed. This advantageously achieves that, on the one hand, less filling medium is required and, on the other hand, the filling medium does not have to be precompressed. This in turn leads to a considerable cost savings.

Another embodiment is designed such that the filling medium is provided with a clouding agent that minimizes the penetration of the infrared radiation. This leads to an even more preferred heat transfer coefficient. A further exemplary embodiment of a honeycomb according to the invention is designed such that the honeycomb contains, in addition to the insulating filling media, a molecule scavenger which binds possibly diffusing molecules. This also leads to an even more preferred heat transfer coefficient.

The inventive embodiment of a honeycomb element according to the invention has the walls of the honeycomb and the first cover plate, as well as the second cover plate. In a preferred manufacturing method, the walls are first connected to a first cover. Subsequently, the second cover is partially connected to the walls, so that a gap between the wall and the second cover plate is formed. From this distance, the air is sucked out, so that a vacuum is created in the honeycomb. The described manufacturing steps take place in a vacuum chamber. It is also conceivable that not only one of the covers, but both covers have a distance from which then the air can be sucked, wherein after evacuation, the cover is lowered in the evacuated state on the walls of the honeycomb. There, the cover remains until the adhesive has cured. In the embodiment in which a distance is left between the two covers, two valves would be used accordingly. Subsequently, then the covers would be connected to the walls. The connection takes place here by gluing.

Subsequently, after curing of the adhesive, the vacuum chamber is flooded again, in which the valve is opened. This then loads the normal atmosphere on the finished honeycomb element for insulation. After flooding the vacuum chamber, the honeycomb element is removed from the vacuum chamber. In a preferred embodiment, the cover is provided with a metal foil, which on the one hand prevents diffusion and, on the other hand, reflects the IR radiation. An advantage of the honeycomb elements according to the invention is the fact that they can be manufactured in standard sizes and can be produced fully automatically in mass production. A honeycomb element according to the invention can be tailored to the requirements at the construction site. This results from the fact that even with vacuum failure of a honeycomb, the other surrounding honeycombs are still evacuated and thus compensate for the failure of a honeycomb. This advantageously leads to the fact that the honeycomb element can be processed on the construction site, like a conventional wooden panel. Due to the honeycomb structure and the absence of a corresponding additional plastic shell, the honeycomb element requires no additional protection in the form of supports or repackings, as described in the prior art. Advantageously, the honeycomb element according to the invention can be used self-supporting and as an independent wall. A violation of the cover layer does not lead to the complete vacuum loss of the honeycomb element, but only to the loss of the vacuum in a honeycomb. In addition, the honeycomb element according to the invention has a long service life, since the diffusion must penetrate from the outside via the outer honeycombs in the inner honeycomb and on the cover prevents an aluminum layer, the diffusion.

In another preferred embodiment, the cover layers are adhered prior to filling and evacuation, or optionally after filling and before evacuation, with each cell having an opening in the cover plate through which the cell can be filled and evacuated and which after evacuation is glued with a sealing plug and / or a diffusion-tight sealing film. An advantage of this inventive method is the particular suitability for the automated production of honeycomb elements according to the invention. In particular, by the Manufacturing process that allows continuous plate production as an alternative to the vacuum chamber.

Finally, it should advantageously be pointed out that the use of the honeycomb element according to the invention leads to improved fire protection. Conventional insulation elements such as polystyrene are highly flammable. By contrast, the materials used for the honeycomb element according to the invention are far less easily flammable.

In order to obtain compatibility with other insulating mats or Dämmwänden the inventive honeycomb elements are attached to the cover plates having points with polystyrene in the desired thickness and design. This facilitates insertion into possibly existing insulation structures. The application of polystyrene can be done on one side or two sides of the honeycomb element.

A honeycomb element according to the invention is preferably produced by using a diffusion-blocking adhesive. A diffusion-blocking adhesive has nanoparticles, for example in the form of nanoplates, which increase the diffusion path. This adhesive should preferably be used at all points of the honeycomb element to be joined together.

In another exemplary embodiment of a honeycomb element according to the invention, a film is first placed over the honeycomb or honeycomb inner walls in order subsequently to fill the filling medium into the honeycomb in order to protect the splices against flying filling material during filling and vacuuming. The high-barrier film in the honeycomb wall must in this case Vacuum only a fraction of the entire life of the honeycomb element hold. Here, the user can consciously use less diffusion-blocking materials, as they are produced in other sectors, for example, food packaging in large series. This, together with a high-diffusion-barrier aluminum barrier and cell-to-cell diffusion, advantageously allows the use of lower cost barrier layers.

In the outer honeycomb of the honeycomb element, the filling medium is preferably compressed higher or has a smaller pore diameter than that in the inner honeycomb. On the outside, honeycombs are obtained, which still have partial vacuum insulation properties at a low vacuum up to the ambient pressure. Outer honeycombs should be honeycombs, which have at least one wall to which no other honeycomb rests. Inner honeycombs should be those which have a different honeycomb on each wall.

DESCRIPTION OF THE FIGURES

The invention will be described in more detail below with reference to an exemplary embodiment. Identical reference numerals in different figures are also to be taken as disclosed without a concrete repeated mention in the other figures, since the attachment of the corresponding reference number serves to transfer the disclosures from other figures. The figures show in detail in

Fig. 1

Structure of the cell wall - Layers 1 and 3 form a wall of a honeycomb, wherein a Hochsperrfolie 2 is retracted to avoid diffusion.

Fig. 2

Figure 2 illustrates the complete honeycomb structure with integrated Hochsperrfolie 2 There are three adjacent half sections of a honeycomb body 21, as shown in Figure 3 can be seen.

Fig. 3

FIG. 3 shows the view according to FIG. 2. In FIG. 3, however, the individual elements of the wall of the honeycomb body 21 are no longer shown as an exploded view, but joined together. The interconnected layers 1, 3 and the high-barrier film 2 form a homogeneously fused and crosslinked wall of the honeycomb body 21. Combined, this leads to the fact that a honeycomb body 21 is formed. The honeycomb body 21 in Figure 3 consists of three unspecified honeycomb.

Fig. 4

FIG. 4 shows a plurality of honeycomb bodies 21 arranged side by side, which together form a honeycomb element which is not described in more detail. The number of honeycombs which form a honeycomb element should basically not be limited. However, it will be on it It is pointed out that as a rule a total of more than three honeycombs can lead to a honeycomb element.

Fig. 5

FIG. 5 shows the honeycomb body 21 with connected first cover 11. The first cover 1 1 is adhered to the honeycomb body 21 under a normal atmosphere. The adhesive layer 12 is merely indicated. The honeycomb body 21 was sealed with a high barrier layer 13 prior to bonding to the first cover 11.

Fig. 6

FIG. 6 shows the honeycomb body 21 with the first cover 11 and the adhesive layer 12. The honeycomb body 21 is additionally provided with a well-insulating, open-pore nanoporous filling medium 14.

Fig. 7

Figure 7 shows the honeycomb body 21 with the first cover 1 1 and the only indicated filling medium 14. Fig. 8

Figure 8 shows an autoclave 31 with vacuum exhaust pipe 32 and a slider 33. In the autoclave 31 is the filled honeycomb body 21 with the first cover 1 first Above this, a second cover 36 is shown, which is arranged with an indicated adhesive 37 so that the honeycomb body 21, an air gap is formed. If the air evacuated from the vacuum extraction tube 32, as indicated by the arrow 34, it also escapes from the honeycomb interior, as indicated by the arrows 38.

Fig. 9

FIG. 9 shows the evacuated autoclave 31 with closed slide 33. In the evacuated autoclave 31, the second cover 36 becomes mechanical, As indicated by the arrow 41, pressed on the honeycomb body 21 until the adhesive 37 is set.

Fig. 10

Figure 10 shows the re-atmosphere flooded autoclave 31 and the honeycomb member consisting of the honeycomb body 21 and the first cover 1 and the second cover 36, on which the atmosphere is loaded, as indicated by the arrows 42. Fig. 1 1

Figure 1 1 shows the finished honeycomb element for insulation that is removed from the autoclave 31. Items identified in the same way are not mentioned separately again, since the same assignment of reference numbers is intended to serve the same disclosures in all figures for all figures.

Fig. 12

FIG. 12 shows the finished complete honeycomb element FIG. 13

FIG. 13 shows the cover layer structure of one of the covers 11, 36. The covers each consist of a support layer 51, which bears the load of the atmosphere, and an aluminum foil 52, which forms an up to 100 times better diffusion barrier than the honeycomb and at the same time Reflects rays back.

Fig. 14

FIG. 14 shows that the individual honeycomb bodies 21 are separated from the atmosphere 61 by the covers 11, 36. The first and the second cover 1 1, 36 form through the aluminum layer an extremely diffusion-tight barrier. Fig. 15

Figure 15 shows the honeycomb body 21, which is acted upon by the sides 61 with the atmosphere. From this figure it can be seen that only the outer cells are exposed to the atmosphere 61. The inner cells are pressure-free.

FIG. 16

FIG. 16 shows how the honeycomb body 21 .1 with the cover 36. 1 and the honeycomb body 21. 2 with the cover 36. 2 are connected to one another by an intermediate element 71. The covers 36.1 and 36.2 overlap the honeycomb bodies 21 .1 and 21 .2 at a defined distance, so that the intermediate element 71 with the walls of the respective honeycomb body 21 .1. and 21 .2 cooperate. This means that the intermediate element is adapted to the outer shape of the respective honeycomb body. FIG. 17

In FIG. 17, the view according to FIG. 16 is again tilted by 90 °. From this top view is now easy to see, as well as the covers

36.1 and 36.2 and the covers 1 1 .1 and 1 1 .2 the honeycomb body 21 .1 and

21 .2 overlapping executed. Between the two honeycomb elements, the intermediate element 71 can be seen. This intermediate element 71 is to be inserted similar to a modular principle between the honeycomb elements, whereby, for example, the construction of an insulating wall to be facilitated. The intermediate element can in this case be designed such that when coating the overlapping points of the covers a stiff connection is achieved, which prevents the honeycomb element easily slides off of the intermediate element 71 again.

FIG. 18

In Figure 18, a honeycomb element according to the invention with a honeycomb body 21 .2 and the cover 36.2 and the cover 1 1 .2 can be seen. There is also shown how in the cover 36.2 a plurality of openings 72 is recessed. These openings can either already during production the cover 36.2 be provided or be drilled after connecting the cover 36.2 with the honeycomb body 21 .2.

FIG. 19

In Figure 19 is indicated by arrows 73, as an unspecified filling medium is introduced through the openings 72 in the interior of each honeycomb of the honeycomb body 21 .2.

FIG. 20

In FIG. 20, in turn, it is indicated by arrows how the air, which is not shown in more detail, is pulled out of the honeycomb interior through the openings 72 by an evolved vacuum.

FIG. 21

Figure 21 shows a side view of Figures 18 to 20. There it is shown how after pulling out the air from inside the honeycomb a metal foil 75 is applied to the cover 36.2 to seal the metal foil 75. It is irrelevant whether the metal foil 75 is glued to the cover 36.2, welded or joined in a different manner.

FIG. 22

In Figure 22 is shown as indicated in the honeycomb body 21 .3 by the arrow 76, an unspecified filling medium is introduced. The honeycomb body is closed on one side by the cover 1 1 .3.

FIG. 23

FIG. 23 shows in chronological connection to FIG. 22, such as, for example, a thin foam plate 77 with force on the honeycomb body 21 .3. is charged. The application of force is indicated by an arrow 78. After filling the honeycomb with the filling medium, a thin foam plate 77 is pressed as a conclusion on the honeycomb body 21 .3. The foam plate 77 is then divided into corresponding sections 79, as shown in FIG are. The sections 79 are cut by the honeycomb during pressing. They are compressed around the honeycomb thickness and thus wedged on the surface. FIG. 24

In FIG. 24, the section 79 can be seen in the area of the honeycomb body 21. The section 79 is like the plate 77 permeable to air. This advantageously ensures that the filling medium 14 can not escape from the honeycomb and yet the air in the honeycomb is removed.

Image Portioning in little bag

Picture pre-pressed hexagon

Claims

claims

1 . Honeycomb element for insulation, consisting of a plurality of honeycombs, which consist of a honeycomb body (21, 21 .1, 21 .2, 21 .3) and each cover (1 1, 36) at each open end of the honeycomb element, characterized in that each honeycomb is evacuated.

2. honeycomb element according to claim 1, characterized in that a wall (1, 3) of the honeycomb consists of thermosetting plastic material.

3. honeycomb element according to claim 2, characterized in that the wall (1, 3) of the honeycomb comprises a non-metallic Hochsperrfolie (2).

4. honeycomb element according to one of the preceding claims, characterized in that the honeycomb is filled with a nanoporous filling medium (14), suitable for additional insulation.

5. honeycomb element according to claim 4, characterized in that the nanoporous filling medium (14) comprises a molecule scavenger, suitable for binding of molecules introduced into the honeycomb.

6. honeycomb element according to one of claims 1 to 5, characterized in that the first cover (1 1) and the second cover (36) comprises a metal foil, suitable for preventing diffusion.

7. honeycomb element according to one of claims 1 to 6, characterized in that at least one of the covers (1 1, 36) has an opening, suitable for introducing the nanoporous filling medium into the honeycomb and for charging the honeycomb by means of vacuum.

8. A method for producing a honeycomb element according to claims 1 to 7, characterized by the following steps: - The honeycomb body (21, 21.1, 21.2, 21.3) is pressed from thermosetting plastic under heat and pressure, honeycomb body (21, 21.1, 21.2, 21.3) are produced with small web thicknesses at high load absorption;

- Between the walls (1, 3) of the honeycomb body (21, 21.1, 21.2, 21.3), a non-metallic Hochsperrfolie (2) is integrated, so that the

Layer (1, 3) with the Hochsperrfolie (2) form a solid bond;

- The honeycomb body (21, 21.1, 21.2, 21.3) is glued to the openings with one of the cover (11, 36),

- Each honeycomb is evacuated through the opening;

- The honeycomb, consisting of the honeycomb body (21, 21.1, 21.2, 21.3) and the first cover (11) and the second cover (36) is evacuated in a vacuum chamber (31), wherein the first cover (11) and the second cover (36) with the honeycomb body (21, 21.1, 21.2, 21.3) are glued.

9. The method according to claim 8, characterized in that in the honeycomb body (21) a nanoporous filling medium (14) is introduced.

10. The method according to any one of claims 8 or 9, characterized in that between the honeycomb body (21, 21.1, 21.2, 21.3) and one of the two

Leaves a gap (11, 36), wherein the air escapes through a negative pressure generated in a vacuum chamber (31).

11. The method according to any one of claims 8 to 10, characterized in that an air-permeable foam plate (77) on the honeycomb body (21, 21.1,

21.2, 21.3) is pressed, wherein the foam plate (77) through the walls (1, 3) of the honeycomb body (21, 21.1, 21.2, 21.3) is divided such that a Completion of the honeycomb is done, suitable to prevent the vacuum medium from escaping the filling medium from the honeycomb.

12. The method according to any one of claims 8 to 10, characterized in that the filling medium is pre-portioned in perforated foil or fleece and so in the honeycomb body (21, 21 .1, 21 .2, 21 .3) is inserted, suitable to to prevent the filling medium from escaping from the honeycomb and reaching the gluing point when applying the vacuum.