JOINT-SEALING TAPE AND SEALING ARRANGEMENT WITH SUCH SEALING TAPE

Abstract

The present invention relates to a joint-sealing tape with an elongated carrier and at least two separate sealing elements of predetermined width, which are disposed on one side of the carrier, spaced apart, side-by-side and running in the longitudinal direction of the carrier, and which each have two oppositely disposed broad sides as well as two narrow sides running transversely relative to the broad sides and connecting them, wherein the sealing elements are disposed with one broad side on the carrier, wherein the sealing elements are each joined firmly to the carrier only via part of their broad side. Furthermore, the invention relates to a sealing arrangement for sealing of building structure joints, especially for sealing against sound and/or smoke and if applicable against fire, with such a sealing tape.

Claims

1. A joint-sealing tape for sealing a joint between a first building part and a second building part, said joint-sealing tape comprising: an elongated carrier, and at least two separate sealing elements of predetermined width (c), which are disposed on one side of the carrier, spaced apart, side-by-side and running in a longitudinal direction of the carrier, and which each have two oppositely disposed broad sides as well as two narrow sides running transversely relative to the broad sides and connecting them, wherein the sealing elements are disposed with one broad side on the carrier, wherein the sealing elements are each joined firmly to the carrier only via part of their broad side.

2. The joint-sealing tape according to claim 1, wherein the sealing elements are disposed in such a way on the carrier that parts of the sealing elements that are joined firmly to the carrier respectively form an outer region, and parts that are not joined firmly to the carrier form an inner region, wherein the inner regions face one another.

3. The joint-sealing tape according to claim 2, wherein the carrier has three regions, two regions on which the sealing elements are disposed, which form the two outer regions, and one region between, which forms the middle region, wherein parts of the two outer regions of the carrier, on which the sealing elements are not firmly joined to the carrier, respectively adjoin the middle region of the carrier and together therewith form a support region for application on a building part.

4. The joint-sealing tape according to claim 1, wherein the sealing elements consist of a deformable material.

5. The joint-sealing tape according to claim 4, wherein the sealing elements consist of an intumescent material.

6. The joint-sealing tape according to claim 4, wherein sealing elements consist of one piece made from one material or of multiple parts made from several materials and exist as a layered body.

7. The joint-sealing tape according to claim 1 wherein the carrier consists of a plastic film, of a fabric, or of a nonwoven.

8. A sealing arrangement for sealing a joint between two juxtaposed building parts, the sealing arrangement comprising: at least one first building part, one second building part and a joint-sealing tape according to claim 1, wherein the side with which the second building part bears on the first building part has a face (F2) with a width (B2; p) and the first building part has a face (F1) with a width (B1), on which the second building part bears, with the condition that the width (B2; p) is smaller than the width (B1), wherein the sealing elements are positioned in an outer region of the joint and are configured to seal the joint from outside.

9. The sealing arrangement according to claim 8, wherein the sealing elements are disposed laterally on the second building part.

10. The sealing arrangement according to claim 8, wherein the joint-sealing tape is disposed on the second building part in such a way that a side of the carrier disposed opposite the sealing tapes comes into contact with the second building part and the narrow sides, facing one another, of the sealing elements respectively come into contact with the first building part.

11. The sealing arrangement according to claim 8, wherein, after application of the joint-sealing tape on the second building part, the sealing elements wrap around and are applied on opposite faces, which are joined by the face (F2), so that the sealing elements have a projecting length (h) relative to the face (F2) of the first building part, wherein the projecting length (h) points in the direction of the face (F1) of the first building part.

12. The sealing arrangement according to claim 11, with a joint-sealing tape, wherein the broad sides of the sealing elements have a predetermined width (c), each outer region of the sealing elements has a width (a) and the support region of the carrier has a width (b), wherein, for given width (c) and given width (B2; p), the width (a) is chosen as a function of the width (B2; p) of the second building part in such a way that the width (b) of the support region of the carrier corresponds to at least the width (p) and the width (t) of the middle region of the joint-sealing tape is smaller than the width (p).

13. The sealing arrangement according to claim 8, wherein the first building part is a wall, a ceiling or a floor of a building structure and the second building part is a frame profile of a drywall studwork.

Description

[0058] Further advantages and features will become obvious from the description hereinafter in conjunction with the attached drawings, wherein:

[0059] FIG. 1 shows a perspective view of a joint-sealing tape with a rectangular strip as sealing element according to one embodiment of the present invention;

[0060] FIG. 2 shows a cross section through a joint-sealing tape with a rectangular strip as sealing element according to one embodiment of the present invention;

[0061] FIGS. 3a to 3c show a sketched front view of a joint-sealing tape with a rectangular sealing strip as sealing element according to one embodiment of the present invention;

[0062] FIG. 4 shows a sketched front view of a building element from a dry-construction profile and a ceiling with the joint-sealing tape shown in FIGS. 3a to 3c according to one embodiment of an inventive sealing arrangement;

[0063] FIG. 5 shows the stepwise procedure for establishing a sealing arrangement according to FIG. 4;

[0064] FIG. 6 shows a sketched front view of a finished building element with the embodiment of an inventive sealing arrangement shown in FIG. 4;

[0065] FIGS. 7-9 respectively show a sketched front view of a finished building element according to a further embodiment of an inventive sealing arrangement; and

[0066] FIG. 10 shows a sketched side view of the building element from FIG. 7.

[0067] A joint-sealing tape 1 according to one embodiment of the invention is shown in FIGS. 1, 2 and 3a. Joint-sealing tape 1 has two sealing elements 3, 3, which are formed as strips (hereinafter referred to as sealing strips 3, 3) and are disposed on the outer rims of carrier 2. Sealing strips 3, 3 have a rectangular cross section with two opposite broad sides and respectively two narrow sides running transversely relative to the broad sides and connecting them. As an example, sealing strips 3, 3 consist of a compressible foam and carrier 2 of a plastic film. With one broad side, sealing strips 3, 3 are joined via a respective adhesive layer 4, 4 to the carrier. The distance t between the two sealing strips 3, 3 corresponds to the distance between the two narrow sides facing one another. However, the sealing strips are firmly attached to carrier 2 only on the outer region of the corresponding broad side, so that the respective adhesive layer 4, 4 extends from the rim of carrier 2 to points A and B respectively.

[0068] Thus joint-sealing tape 1 is subdivided functionally into three regions, the two outer regions with width c, which correspond to the region in which sealing strips 2 are disposed on carrier 2, and the middle region between them with width t, in which region no sealing material is associated with carrier 2. Sealing strips 3, 3 are each subdivided into two regions, namely each has an outer region, which corresponds to the region that is firmly joined to carrier 2, and each has an inner region, which corresponds to the region that is not joined firmly to carrier 2. These two inner regions face one another. In the illustrated embodiment, the outer region and the inner region of a sealing strip are not separated from one another, and so the sealing strip is formed in one piece. In alternative embodiments, not shown here, the outer region and the inner region of a sealing strip may define separate regions of the sealing strip, which have different cross sections and/or may consist of different materials.

[0069] The region of carrier 2 defined by the region between points A and B corresponds to the support region with width b, which is larger than the distance t between the two sealing strips 3, 3 (see FIG. 3b). The region on which sealing strips 3, 3 are joined firmly to carrier 2 via adhesive layer 4, 4 has respectively the width a (see FIG. 3b).

[0070] When joint-sealing tape 1 with the support region is applied on the channel profile of a drywall studwork (not illustrated in the figure), for example, more accurately when it is laid on the web of the channel profile, joint-sealing tape 1 is able to be kinked at points A and B (FIG. 3b), in order to be applied closely on the channel profile, as shown in FIG. 3c.

[0071] FIG. 3c shows the condition in which joint-sealing tape 1 is applied completely on channel profile 10, in which case the two sealing strips 3, 3 bear laterally on channel profile 10 and carrier 2 is supported directly on channel profile 10. For joint-sealing tape 1, the width of the support region was chosen to correspond to the width p of the web of the channel profile. As is evident from FIG. 3c, a region of sealing strips 3, 3 that extends beyond the face of channel profile 10projecting length his obtained by application of sealing strips 3, 3 on the side cheeks of profile 10.

[0072] This projecting length has two functions. Firstly it ensures that sealing strips 3, 3 are pressed in centered manner and firmly on the flanges of channel profile 10 during fastening of channel profile 10 to ceiling 20. This is indicated in FIG. 4 by the two arrows. Thereby additional fastening of sealing strip 3, 3 to flanges 12, 12 of channel profile 10 can be dispensed with, without detriment to the sealing effect under them. Secondly, sealing strips 3 and 3 are pressed firmly on ceiling 20 and thus they are able to even out any irregularities that may be present in ceiling 20 and to seal the gap between channel profile 10 and ceiling 20 from the outside. In this way it is achieved that joint-sealing tape 1 is applied sealingly on ceiling 20 and channel profile 10.

[0073] The use of joint-sealing tape 1 for sealing the gap between a ceiling 20, channel profile 10 of a drywall studwork and gypsum board 30 is sketched stepwise in FIG. 5. Firstly, in first step I, joint-sealing tape 1 is laid on the web of channel profile 10 and, in second step II, is fastened together therewith on ceiling 20 in standard manner, e.g. by screws or nails. Then, in a last step III, gypsum boards 30 are applied on the flange of channel profile 20 and pushed upward in the direction of ceiling 20, whereupon a gap remains between the top edge of gypsum board 30 and ceiling 20, which is filled with sealing strips 3, 3 of joint-sealing tape 1, in order to permit vertical movement, for example, of gypsum board 30. Thereby the sealing strips are compressed and thus seal the gap between ceiling 20 and channel profile 10 and the gap between ceiling 20 and gypsum board 30. The finished structure is shown in FIG. 6.

[0074] FIG. 7 shows the finished structure of a building element with offset double-boarded arrangement. Firstly, in the first step, joint-sealing tape 1 is laid on the web of channel profile 10 and, in the second step, is fastened together therewith on ceiling 20 in standard manner, e.g. by screws or nails. Then, in a further step, the first, inner gypsum boards 30, 30 are applied on the flange of the channel profile and pushed upward in the direction of ceiling 20, whereupon a gap remains between the top edge of gypsum board 30 and ceiling 20, which is filled with the sealing strips of joint-sealing tape 1, in order to permit vertical movement, for example, of gypsum boards 30, 30. Gypsum boards 30, 30 are mounted in such a way that the two sealing strips are compressed only slightly. Hereby, at maximum joint width, a gap is able to form between the sealing strips of joint-sealing tape 1 and gypsum boards 30, 30. The second, outer gypsum boards 40, 40 are mounted from outside on the two first, inner gypsum boards 30, 30, generally by joining the two boards 30, 40, 30, 40 supported on one another by screws, in which case the two second, outer gypsum boards 40, 40 are mounted somewhat higher than the two first, inner gypsum boards 30, 30, so that they partly overlap the sealing strips of joint-sealing tape 1. Thereby a gap is formed between the top edge of the second, outer gypsum boards 40, 40 and ceiling 20, which permits movement of gypsum boards 30, 30, 40, 40 upward in the direction of ceiling 20. Preferably the sealing strips are positioned somewhat higher than the first, inner gypsum boards 30, 30, so that they protrude somewhat after mounting of the first, inner gypsum boards 30, 30. This projecting length is compressed by the second, outer gypsum boards 40, 40, with the result that, on the one hand, very good sealing of the second, outer gypsum boards relative to the sealing strips of joint-sealing tape 1 is achieved and, on the other hand, sealing of the gap formed between the sealing strips of joint-sealing tape 1 and the first, inner gypsum boards 30, 30 in the case of the maximum joint width is achieved.

[0075] A marking line M on the face pointing outward after mounting of joint-sealing tape 1, i.e. from the face of the sealing strip pointing away from the flange of channel profile 10 (FIG. 10), facilitates mounting of the second, outer gypsum boards at the correct height. Marking M takes into consideration the maximum movement of the second, outer gypsum boards 40, 40 upward in the direction of ceiling 20 (FIG. 8). Furthermore, marking line M takes into consideration the maximum movement of the two first, inner gypsum boards 30, 30 downward and away from ceiling 20 (FIG. 9), so that sealing is ensured at all times in both directions of movement (FIGS. 8, 9).

[0076] As is obvious from the examples, application is very mounting-friendly, since no additional fastening of the joint-sealing tape, for example to the profile or to the ceiling, is necessary. Accurately fitting application of the joint-sealing tape, for example against a profile, is also unnecessary, by virtue of the self-centering of the joint-sealing tape during mounting of the profile on a building part. Mounting is therefore conceivably easy, and the working effort for mounting the joint-sealing tape is greatly reduced.

[0077] Regardless of the pressure exerted by the gypsum board, well-defined pressing of the sealing strips against the underlying surface is achieved by the inventive configuration of the joint-sealing tape, and undesired upward pivoting is prevented by the firm pressing of the sealing strips on the profile. Via the choice of the material from which the sealing strips are made, a well-defined spacing can be easily adjusted between a gypsum board and the underlying surface on which the profile is mounted. Furthermore, when used in an expansion joint, the sealing strips hinder movement much less than compared with the known sealing solutions, so that it is possible to work with only a relatively small joint width in order to achieve adequate absorption of movement.

[0078] The invention therefore achieves safe and reliable sealing of joints between two building parts, especially between a profile of a drywall studwork and a building part adjacent thereto, such as, for example, a ceiling, wall or floor. In this connection, two-sided sealing can be achieved in only one operation, by providing a prefabricated sealing element.