AU2007251632A1

AU2007251632A1 - Sealing element for a lightweight structural panel

Info

Publication number: AU2007251632A1
Application number: AU2007251632A
Authority: AU
Inventors: Manfred Riepertinger
Original assignee: Fritz Egger GmbH and Co OG
Current assignee: Fritz Egger GmbH and Co OG
Priority date: 2006-05-11
Filing date: 2007-05-07
Publication date: 2007-11-22
Anticipated expiration: 2027-05-07
Also published as: LT2016237T; EP2016237A1; PT2016237T; DE102006022314A1; AU2007251632B2; PL2016237T3; EP2016237B1; ES2624005T3; WO2007131904A1

Description

06077 1AU TRANSLATOR'S CERTIFICATE 1, the undersigned, being familiar both with the German and English language, certify that the attached English translation is a true and exact translation of all the parts of the international patent application No. PCT/EP2007/054403. Jerse KrOger - Ptent Attorney D~sseldorf, 11. November 2008 KR/hk 060771AU 10. November 2008 SEALING ELEMENT FOR A LIGHTWEIGHT BUILDING BOARD 5 The invention relates to a sealing element for a lightweight building board, to a lightweight building board with at least one cutout, and to the use of a sealing element. Lightweight building boards are well known in the state of 10 the art. Also, in furniture fabrication and in interior construction, they have been used in multiple applications for a long time. The main area of application was and is in particular the fabrication of doors. Thus, it is typical, in particular for doors for rooms, which do not require high 15 degrees of thermal or sound insulation, to cover a frame element comprising a honeycomb core on both sides, and to subsequently fabricate it into a door element with the respective bore holes, millings, etc. 20 For high quality furniture, lightweight building boards were also used, since they facilitate very large wall thicknesses, and thus provide more freedom for the particular design. Recently, lightweight building boards were also used to a higher extent for mass market furniture, so that a use on a 25 larger scale becomes economically feasible. Thus, the various advantages of lightweight building boards also become available to a larger group of consumers. A furniture manufacturer thus does not have to produce 30 lightweight building boards himself anymore, as this was the case previously. Several fabrication steps were required for this process. Initially, a frame had to be fabricated, - 2 possibly with plural transversal beams, onto which the cover layers were then applied, and which had to receive various fittings. Between the cover layers, light fiber board, mineral insulation wool, cardboard honeycombs or similar was 5 inserted. Thus, the element became more compact and it possibly gained stability. Mostly the cover layers also had to be surface treated in separate complex fabrication steps. Thus, particle boards covered by veneer layers or coated in a different manner, were typical as cover layers, wherein the 10 completed element can also receive its final surface by painting at the end. Today lightweight building boards are increasingly mass produced. Thus, a light center layer is provided with cover 15 plates, generally by gluing, so that a large format frameless combination is created. Depending on the desired stability of the plate, cover plates with different thickness, mostly made of a wood material like particle board or fiber board are being used. The boards employed can already be coated, 20 thus with a laminate, a color, a print with sealing, a melamine resin layer, a veneer, etc. For center layers, cardboard honeycombs or foam boards are preferred. For certain applications, possibly also honeycomb materials different from paper or cardboard can be useful. Thus, the 25 thinnest plate materials or also thin walled metal, like aluminum, can be used. However, it is also possible to use lightwood materials as center layers, like e.g. respective particle boards or fiber boards or also solid wood with low density, like e.g. balsa wood. When they are provided with 30 respective cutouts, all materials are useable in principle as a light center layer. Thus, for this application, e.g. also wood types are used, which do not have particularly low KR/hk 060771AU 10. November 2008 -3 weight, but which are easily available, and which can be easily worked with chip removing tools. Also, light center layers made of bundles of straws, which are linked and cut to form flat objects, so that the length of the straw sections 5 corresponds to the thickness of the center layer, are known. The plates thus manufactured are then cut to the desired size. Depending on the intended use of the elements obtained, they are then provided with edges, or a at least 10 partially circumferential frame is subsequently applied. This is done by milling the edge portion and by subsequent gluing-in of a frame profile, which is in turn mostly comprised of a wood material. 15 However, it is an unresolved problem so far to sufficiently protect and seal the narrow surfaces and the center layer, which are exposed by the cutouts in the lightweight building boards provided for receiving the elements, in particular against moisture. Cutouts are necessary e.g. when using a 20 lightweight building board as a kitchen countertop, in order to receive a sink or a stovetop. It is furthermore disadvantageous that no simple and cost effective measures are known to individually protect narrow 25 surfaces and center layers, thus at the installation location, when the cutout is only provided at the installation location. It is thus the technical object of the invention to provide 30 measures which facilitate protecting the narrow surfaces and the center layers in a simple and individual manner. KR/hk 060771AU 10. November 2008 -4 The technical problem described supra is solved by a seal element according to the invention for a lightweight building board, comprised of two cover plates and a center layer disposed there between, comprising an outer section, wherein 5 the outer section comprises a height which corresponds at least to the distance of the surfaces of the cover plates facing away from the center layer, and which comprises an inner section, in which the sides of the section facing away from each other comprise a distance, which corresponds at 10 least to the distance of the surfaces of the cover plates facing the center layer, wherein the outer section is integrally configured with the inner section. The invention has thus recognized that a sealing element thus 15 configured facilitates an individual protection, in particular a sealing of the respective surfaces exposed by the cutout in a particularly simple manner. The sealing element can be inserted between the cover plates 20 with its inner section, wherein the center section is previously recessed in the insertion portion, so that the outer section contacts the narrow surfaces of the cover plates, and protects them since the outer portion in particular takes over a sealing function. 25 In particular, when a lightweight building board is used as a kitchen countertop, there are many situations where contaminants can reach the narrow surfaces and/or the center layer, which can lead to a swelling of the contaminated 30 portions and/or to sources of bacteria. When lightweight building boards are used in other applications, the narrow surfaces and/or the center layer can deform in a negative KR/hk 060771AU 10. November 2008 manner, in particular through moisture, can discolor or develop other undesirable properties. According to an embodiment, it is provided that the sealing 5 element of the inner section protrudes relative to the outer section in the direction of the center layer. This way, the inner section can be inserted between the cover plates during assembly, which improves the sealing action and the stability. 10 It can be provided for an optimum fixation of the sealing element at the lightweight building board that the inner section comprises at least one protrusion, preferably two protrusions, which protrude relative to the outer section in 15 the direction of the center layer. Thus, at least one of the protrusions can comprise a lug, which interfaces with a respective indentation in the cover plate. Preferably, the indentations are provided at the inside of the cover plate and the lugs face in opposite directions. This forms a clip 20 connection, which facilitates a simple assembly and disassembly of the sealing element. Alternatively or additionally, it is also conceivable that the indentations are provided at the outside of the cover 25 plate and the lugs face one another. Thus, it can also be provided in other designs that the height of the outer section corresponds to the distance of the sides of the inner section facing away from one another. 30 According to an embodiment, it can be provided that the at least one protrusion is a component of a tongue profile, which can interface with a respective groove profile in the KR/hk 060771AU 10. November 2008 -6 cover plate. It is also conceivable that the at least one protrusion is a component of a groove profile, which can interface with a respective tongue profile in the cover plate. A groove / tongue connection also provides a simple 5 means to mount or demount the sealing element. A particularly simple manufacturing method is provided by extruding the sections. Thus, constant sealing elements can be produced, which only have to be brought into their final 10 form by cutting to a particular length. Since the sections can be made from an elastic material, an outer section is provided which contacts the narrow surfaces very well, and thus seals particularly well, in particular, 15 when round cutouts are provided or when cutouts with round edges are provided. Thus, the inner section can be friction locked in the cutout of the center layer and can be inserted between the cover plates. The elasticity can be selected in particular so that a deformation of the inner section does 20 not lead to the cover plates being pressed apart. Additionally the sections can comprise thermal stability. This is advantageous when the sealing element comes in contact with elements which heat up, which are to be disposed 25 in the cutout of the lightweight building board. A stovetop can be such an element. For example, thermal stability can be provided up to a temperature of 1500 C, in particular up to 1000 C, so that the sealing element does not deform in a disadvantageous manner up to this temperature. 30 KR/hk 060771AU 10. November 2008 - 7 All elastic materials can be used for producing sealing elements with elastic properties. Thermoplastic materials or also PVC or polyamide can be used. 5 A particularly preferred embodiment is characterized by the sections comprising a T-shaped cross section in combination. A sealing element thus configured facilitates an insertion into the recess of the center layer and sealing the narrow surfaces in a simple manner. 10 Since at least one section comprises at least one sealing surface for sealing at least one element of the lightweight building board, in particular a narrow surface of a cover plate, a cover plate and/or a center layer, the tightness and 15 the protection of the narrow surfaces and/or the center layer can be additionally improved. Thus, any known glue can be used for sealing, which can be performed by gluing the sealing surfaces to the narrow surfaces and/or to the cover plates in the portion of the center layer or to the center 20 layer itself. It is also conceivable to use a sealing compound for sealing. A sealing compound has the advantage that it does not have any significant stickiness after it has set. Thus, the 25 sealing element according to the invention can be removed anytime without getting damaged and without damages to the lightweight building board. After removing possible residuals of the sealing compound from the sealing element or from the lightweight building board, which is rather simple 30 because there is no stickiness, the sealing element can be inserted again, and the lightweight building board can also KR/hk 060771AU 10. November 2008 -8 be sealed again by the sealing element at the location previously sealed. The at least one sealing surface can also be provided with a 5 glue. Alternatively or additionally, the at least one sealing surface can be provided with an adhesive tape. Through the adhesive effect, besides facilitating good sealing, also an optimum attachment of the sealing element is provided. 10 In particular, the glue, the adhesive tape and/or the sealing compound is already applied to the sealing element at the factory. Then no separate sealing compound, this means glue, adhesive tape or encasement compound, has to be used, which 15 facilitates handling the sealing element. The sealing compound is preferably applied in a manner which requires activation before the sealing element is mounted. The glue, the adhesive tape and/or the sealing compound can e.g. be provided in an encased form. A cover can also be provided, 20 e.g. a protective strip covering the adhesive tape, wherein said cover only has to be removed before gluing, and thus activates the glue. Thus it is prevented that the sealing compound contacts other elements before activation, e.g. peeling off the cover. 25 Furthermore, the inner section can comprise a width which is suitable for mounting a mechanical fastener element. Thus, the sealing element can be disposed in a cutout and can be connected to the lightweight building board through a 30 mechanical fastener element. The fastener element can be in particular a screw or an anchor, which ideally can be removed KR/hk 060771AU 10. November 2008 - 9 again, so that the sealing element can be removed from the cutout when required. According to another embodiment, a mechanical fastener 5 element can connect an additional element to the sealing element. Thus, e.g. a stovetop or a sink can be connected to the sealing element by a mechanical fastener element, e.g. a screw mounted to the sealing element. 10 The outer section can additionally comprise a step wherein a mechanical fastener element can reach behind said step. The mechanical fastener element can then be a hook, which is disposed at a stovetop or at a sink. 15 It can be advantageous, when the inner section in longitudinal direction of the sealing element is provided in sections. Thus, the elasticity of the sealing element can be greatly improved, irrespective of its material. 20 This can be provided by inner sections, which are spaced apart section by section, so that a cutout is provided between two respective inner sections. Thus, the cutouts can comprise a width which is less than the width of the inner sections, so that the inner sections are still partially 25 connected amongst one another. The cutouts, however, can also space the inner sections completely apart from one another. When necessary, it is even possible to choose the width of the cutouts, so that the cutout is also partially provided in the outer section. Furthermore, also a 30 previously integral inner section can be provided in partial sections through cuts. Like the previously mentioned cutouts, the cuts, in particular, can separate the inner KR/hk 060771AU 10. November 2008 - 10 sections from one another partially or completely and can also be partially provided extending into the outer section. It can furthermore be provided according to another 5 embodiment that the outer section comprises at least one lip for reaching onto the surface of one of the cover plates, so that an additional increased protection against penetrating moisture is provided. 10 According to another configuration, it can be provided that the portion of the outer section and/or of the inner section, which is visible when the sealing element is mounted, is provided with an ornamental pattern and/or with a structure. This way, an optically attractive sealing element is 15 provided. The ornamental pattern and/or the structure can be fabricated when sections are extruded. Preferably, the ornamental pattern is formed by a coating and/or a metal foil, which is polished in particular, brushed and/or embossed. 20 Independently, the technical object is also accomplished by a lightweight building board, comprising at least one narrow surface, which can also be provided at a section of the lightweight building board, and comprising a sealing element 25 covering the narrow surface, wherein the sealing element can be configured with at least one of the features described supra. It is provided, in particular, that a support beam is disposed adjacent to the sealing element, wherein said support beam extends, in particular, in parallel and/or 30 offset to the narrow surface to be covered. KR/hk 060771AU 10. November 2008 - 11 Furthermore, the technical object can also be accomplished independently by using a sealing element for sealing at least one narrow surface of a lightweight building board, wherein the sealing element and/or the lightweight building board can 5 be configured with at least one of the above mentioned features. The invention is subsequently described with reference to particular embodiments and with reference to the attached 10 drawing figures, in which: Fig. 1 shows an embodiment of a sealing element according to the present invention; 15 Fig. 2 shows an embodiment of a sealing element with inner sections provided as particular sections; Fig. 3A shows an embodiment of a sealing element disposed in a section of a lightweight building board; 20 Fig. 3B shows an alternative embodiment of a sealing element disposed in a section of a lightweight building board; 25 Fig. 4 shows an embodiment of a sealing element glued to the narrow surfaces; Fig. 5 shows an embodiment of a sealing element with an adhesive tape; 30 KR/hk 060771AU 10. November 2008 - 12 Fig. 6A shows an embodiment of a sealing element connected to a lightweight building board by mechanical fastener elements; 5 Fig. 6B shows an embodiment of a sealing element which is connected to another element by a mechanical fastener element; Fig. 6C shows an embodiment of a sealing element comprising 10 a step, so that a mechanical fastener element can reach behind said sealing element; Fig. 7 shows an embodiment of a sealing element interlocked with a lightweight building board; 15 Fig. 8 shows an embodiment of a sealing element glued to a lightweight building board in an alternative manner; 20 Fig. 9 shows an embodiment of a lightweight building board comprising a cutout and a sealing element disposed in said cutout; Fig. 10A shows an embodiment of a sealing element comprising 25 an interlock; Fig. 10B shows another embodiment of a sealing element comprising an interlock; 30 Fig. 10C shows another embodiment of a sealing element comprising an interlock; and KR/hk 060771AU 10. November 2008 - 13 Fig. 11 shows an embodiment of a sealing element comprising a groove and tongue connection. Fig. 1 shows a sealing element for a lightweight building 5 board comprising an outer section 1 and an inner section 2 integrally connected to said outer section 1. Here it is an extruded sealing element of which only a portion is shown in Fig. 1. The length of the sealing element is adapted to the respective application. 10 In particular, the sealing element is made of an elastic material which comprises good thermal stability. This can be PVC. 15 As illustrated in Fig. 1, the sections 1, 2 in combination comprise a T-shaped cross section. The section 1 and/or the section 2 can comprise sealing surfaces 3, 4, 5 for gluing together with at least one 20 element of a lightweight building board 6. Fig. 2 shows that the inner section 2 can be provided in particular sections in the longitudinal direction of the sealing element. Thus, the elasticity of the sealing element 25 can be improved. The dashed line in Fig. 2 shows that the entire width of section 2 is used for offsetting the inner sections 2 section by section from one another. It is also possible to select a decreasing or increasing width, so that the inner sections 2 can also be partially integrally 30 connected, and even the outer sections are partially provided in particular sections. KR/hk 060771AU 10. November 2008 - 14 In an embodiment, which is not shown, the inner sections 2 can also be separated from one another by cuts, and can thus be provided in individual sections. 5 In Fig. 3A, a sealing element is shown inserted into a lightweight building board 6. The portion 7 in Fig. 3 is a portion of a cutout 16 of the lightweight building board 6, which is illustrated in Fig. 9. It can be a round, rectangular, or otherwise configured cutout 16. 10 It is furthermore shown, that the outer section 1 comprises a height Hi, which corresponds to the distance of the cover plates 8, facing away from the center layer 9, and the inner section 2 comprises a height H 2 , which corresponds to the 15 distance of the surfaces of the cover plates 8 facing towards the center layer 9. As illustrated in Fig. 3A, the lightweight building board 6, which is known in the state of the art, is comprised of two 20 cover plates 8 and a center layer 9. Thus, the center layer 9 is milled out in the portion of the inner section 2 of the sealing element. The outer section 1 contacts the narrow surfaces 10 of the cover plates 8 and seals the portion 7 of the cutout of the lightweight building board 6 relative to 25 the ambient. In Fig. 3B, an alternative embodiment of Fig. 3A is shown. The height H, of the outer section 1 can be configured, so that a small lip 20 is formed by the outer section 1, which 30 reaches onto the upper side of the upper cover plate 8, and which further improves the narrow surfaces 10 of the upper cover plate 8, in particular protects it against moisture. KR/hk 060771AU 10. November 2008 - 15 Analogously, such a lip 20 can be provided for the lower cover plate 8. It is shown in Fig. 4 that the sealing element comprises 5 sealing surfaces 3. The sealing surfaces 3 of the sealing element are connected to the narrow sides 10 of the lightweight building board 6 by glue 11. Thus, a higher level of tightness between the sealing element and the lightweight building board 6 is provided. 10 Fig. 5 shows that it is alternatively possible to provide an adhesive tape 12 on the sealing surfaces 3. Furthermore, a cover 13 is provided, which activates the adhesive tape 12 after removal. 15 It is furthermore possible, as shown in Fig. 6A, that the inner section 2 comprises a width which is suitable for mounting a mechanical fastener element 14. The fastener element 14 can be e.g. a screw or an anchor or another 20 mechanical fastener element. The fastener elements 14 connect the lightweight building board 6 to the sealing element. As shown in Fig. 6B, a mounting element 14 can connect 25 another element 18 to the sealing element, wherein the outer section 2 in turn comprises a width which is suitable for this purpose. The element 18 can be any element 18, e.g. an element 18 which is necessary for mounting a stovetop or sink, which is not shown. 30 Alternatively, as shown in Fig. 6C, the outer section 1 can comprise a step 19, which is configured for a mechanical KR/hk 060771AU 10. November 2008 - 16 fastener element to reach behind said step 19. Said mechanical fastener element can be e.g. a hook. In an embodiment, which is not shown, the mechanical fastener 5 element 14 can be configured e.g. as a hook or claw and can impress itself into the outer section 1. For this purpose, in particular, in the outer section 1, a groove for receiving a mechanical fastener element 14 can be provided. In a particularly advantageous manner, the width of the outer 10 section 1 is selected large enough for this purpose. In the alternative shown in Fig. 7, the inner section 2 comprises lugs 15 for interlocking with the cover plates 8. For this purpose, respective indentations 22 are provided in 15 the cover plates B. Fig. 8 shows that also the cover plates 8 can be partially milled out in the portion of the section 16. In the illustrated embodiment, all surfaces 3, 4 and 5 of the 20 sealing element are configured as sealing surfaces 3, 4 and 5 and provided with glue 11 for connecting the sealing element to the lightweight building board 6. The height H 2 of the inner section 2 is thus adapted to the cutout of the cover plates 8, but it is smaller than the height H, of the outer 25 section. Fig. 9 shows a lightweight building board 6 in a top view. A sealing element is disposed in the cutout 16 of the lightweight building board 6, wherein the outer section 1 of 30 said sealing element is visible. The inner section 2, which is not visible, is indicated by the dashed line. KR/hk 060771AU 10. November 2008 - 17 The two ends on the longitudinal sides of the sealing element contact one another and seal each other at the location 17. The invention, however, is not limited to round cutouts as 5 illustrated in Fig. 9. Also, rectangular or square cutouts, in particular, with round corners can be used. In Figs. 10A through 10C, various embodiments of a sealing element for a lightweight building board 6 are shown, in 10 which the sealing element has been connected by means of an interlock or by means of a clip connection to the cover plates 8 of the lightweight building board 6. It is clearly evident, that in the assembled state of the sealing element, as also shown e.g. in the Figs. 3A and 3B, the inner section 15 2 protrudes relative to the outer section 1 in the direction of the center layer. Contrary to the Figs. 3A and 3B, however, the inner section has been provided with two protrusions 21, thus divided in two, wherein the two protrusions 21 protrude in the direction of the center layer. 20 Both protrusions 21 respectively comprise interlocking lugs 15, which interact with respective indentations 22 in the respective cover plates 8. In the embodiments of Figs. 10A and 10B, the recesses 22 are provided at the inside of the 25 cover plate 8 and the lugs 15 point away from one another. At the embodiment according to Fig. 10C, the indentations 22, however, are provided at the outside of the cover plate 8 and the lugs 15 point towards each other. 30 In order to increase the stability in the corner portion of the lightweight building board 6 and in order to avoid that the two cover plates 8 are pressed apart, when the KR/hk 060771AU 10. November 2008 - 18 lightweight building board interlocks with the sealing element, wherein said pressing apart could cause damages to the lightweight building board 6, a support beam 25 is provided adjacent to the sealing element in the embodiment 5 according to Figs. 10A and 10B, wherein said support beam extends in parallel to the narrow surface of the lightweight building board 6 in the present case. Said support beam 25 is preferably offset from the edge of 10 the lightweight building board 6, wherein, on the one hand, the inner section 2 can be disposed and, furthermore, the elastic properties of the cover plates 8 can be used, in order to facilitate the insertion of the protrusion 21, without causing an excessively high load of the connection 15 between the cover plates 8 and the center layer 9. Furthermore, an ornamental pattern (not shown) is provided on the sealing element of the Figs. 10A through 10C, wherein said ornamental pattern is provided on the portion of the 20 outer section 1 which is visible towards the outside in assembled state, and in case of Fig. 10C of the inner section 2, wherein the ornamental pattern corresponds to the ornamental pattern of the cover plates 8. In this manner, an optically attractive and uniform appearance of the finished 25 lightweight building board is accomplished. A difference between the embodiments of the Figs. 10A and 10B is the shape of the cross section of the inner section 2. In the embodiment in Fig. 10A, the inner section 2, besides the 30 two protrusions 21, also comprises a section connecting the two protrusions 21, whereas according to Fig. 10B, the two KR/hk 060771AU 10. November 2008 - 19 protrusions 21 are only connected to the outer section 1 of the sealing element. Fig. 11 shows another embodiment of a sealing element 5 according to the present invention. The configuration is comparable to the configuration of the sealing elements of Figs. 10A and 10B. However, in the present case, each protrusion 21 is a component of a respective spring profile 23, which interacts with a respective groove profile 24 in 10 the cover plate 8. The invention is generally not limited to the illustrated embodiments. In particular, the sealing element can comprise e.g. one or plural lips for contacting the element to be 15 placed into the cutout of the lightweight building board. Furthermore, the cross section of the sealing element is not restricted to a T-shaped cross section. Also, a connection of the sealing element to the center layer of the lightweight building board can be provided. KR/hk 060771AU 10. November 2008

Claims

1. A sealing element for a lightweight building board (6), which is formed by two cover plates (8), and by a center layer (9), disposed there between, made out of a 5 cardboard honeycomb, comprising: - an outer section (1), wherein the outer section (1) comprises a height (H 1 ) , which corresponds at least to the distance of the surfaces of the cover plates (8), facing away from the center layer (9); and 0 - an inner section (2), in which the sides of the section (2), facing away from one another, comprise a distance (H 2 ), which corresponds at least to the distance of the surfaces of the cover plates (8), facing the center layer (9), 5 wherein the outer section (1) is configured integrally with the inner section (2).

2. A sealing element according to claim 1, characterized in that the inner section (2) protrudes relative to the 0 outer section (1) towards the center layer (9) when the sealing element is assembled.

3. A sealing element according to claim 1 or 2, characterized in that the inner section (2) comprises at 5 least one protrusion (21), preferably two protrusions (21), which protrude(s) relative to the outer section (1) towards the center layer (9). - 2

4. A sealing element according to claim 3, characterized in that at least one of the protrusions (21) comprises a lug (15) which interacts with a respective recess (22) in the cover plate (8). 5

5. A sealing element according to claim 4, characterized in that the recesses (22) are provided at the inside of the cover plate (8) and the lugs (15) face away from one another. 0

6. A sealing element according to claim 4 or 5, characterized in that the recesses (22) are provided at the outside of the cover plate (8) and the lugs (15) face each other. 5

7. A sealing element according to one of the claims 3 through 6, characterized in that the at least one protrusion (21) is a component of a key profile (23), which can interact with a respective groove profile (24) 0 in the cover plate (8).

8. A sealing element according to one of the claims 3 through 6, characterized in that the at least one protrusion (21) is a component of a groove profile (24), 5 which can interact with a respective key profile (23) in the cover plate (8).

9. A sealing element according to one of the preceding claims, characterized in that the height (H 1 ) of the outer 0 section (1) corresponds to the distance (H 2 ) of the sides of the inner section (2) facing away from one another. KR/hk 060771AU 13 November 2008 - 3

10. A sealing element according to one of the preceding claims, characterized in that the sections (1, 2) are extruded. 5

11. A sealing element according to one of the preceding claims, characterized in that the sections (1, 2) are made of an elastic material.

12. A sealing element according to one of the preceding 0 claims, characterized in that the sections (1, 2) comprise thermal stability.

13. A sealing element according to one of the preceding claims, characterized in that the sections (1, 2) are 5 made of PVC or polyamide.

14. A sealing element according to one of the preceding claims, characterized in that the sections (1, 2) comprise a T-shaped cross section in combination. 0

15. A sealing element according to one of the preceding claims, characterized in that at least one section (1, 2) comprises at least one sealing surface (3, 4, 5) for sealing at least one element of the lightweight building 5 board (6) in particular a narrow surface (10) of a cover plate (8), and/or of a center layer (9).

16. A sealing element according to one of the preceding claims, characterized in that the at least one sealing 0 surface (3, 4, 5) is preferably provided with a glue (11) and/or with an adhesive tape (12) at the factory. KR/hk 060771AU 13 November 2008 -4

17. A sealing element according to one of the preceding claims, characterized in that the at least one sealing surface (3, 4, 5) is preferably provided with a sealing compound at the factory. 5

18. A sealing element according to one of the preceding claims, characterized in that the inner section (2) comprises a width configured for mounting a mechanical fastener element (14). 0

19. A sealing element according to one of the preceding claims, characterized in that the inner section (2) is provided in particular sections in the longitudinal direction of the sealing element. 5

20. A sealing element according to one of the preceding claims, characterized in that the outer section (1) comprises at least one lip (20) for reaching onto the surface of one of the cover plates (8). 0

21. A sealing element according to one of the preceding claims, characterized in that the portion of the outer section (1) and/or of the inner section (2), which is visible when the sealing element is mounted, is provided 5 with an ornamental pattern and/or with a structure.

22. A sealing element according to claim 21, characterized in that the ornamental pattern and/or the structure is fabricated during the extrusion of the sections (1, 2). 0 KR/hk 060771AU 13 November 2008 - 5

23. A sealing element according to claim 21 or 22, characterized in that the ornamental pattern is formed by a coating. 5

24. A sealing element according to one of the claims 21 through 23, characterized in that the ornamental pattern and/or the structure is formed by a metal foil, which is in particular polished, brushed and/or embossed. 0

25. A lightweight building board (6), comprising: - at least one narrow surface (10); and - at least one sealing element according to one of the preceding claims, which covers the narrow surface (10). 5

26. A lightweight building board (6) according to claim 25, characterized in that a support beam (25) is provided adjacent to and/or offset from the sealing element, wherein said beam extends in particular in parallel to 0 the narrow surface (10) to be covered.

27. The use of a sealing element according to one of the claims 1 through 24 for sealing at least one narrow surface (10) of a lightweight building board (6) in 5 particular of a lightweight building board (6) according to one of the claims 25 or 26. KR/hk 060771AU 13 November 2008