SEALING STRIP FOR SEALING DRYWALL CONNECTING JOINTS

Abstract

A sealing strip is for sealing drywall connecting joints. The sealing strip has a centre web with two longitudinal edges, wherein along each longitudinal edge, a sealing profile is arranged having a first profile section, which is arranged along the allocated longitudinal edge and has a first thickness in the transverse direction of the centre web. A second profile section adjoins the first profile section, and the second profile section forms the end of the sealing profile that is remote from the centre web and has a second thickness in the transverse direction of the centre web, the second thickness being smaller than the first thickness.

Claims

1: A sealing strip for sealing of connecting joints in drywalls, comprising: a central web, which has two longitudinal rims, a sealing profile, which is disposed along each longitudinal rim, has a first profile portion, which is disposed along the associated longitudinal rim and in transverse direction of the central web has a first thickness, and has a second profile portion, adjoining the first profile portion, which forms the end of the sealing profile remote from the central web and in transverse direction of the central web has a second thickness, wherein the second thickness is smaller than the first thickness.

2: The sealing strip according to claim 1, wherein the first profile portion and/or the second profile portion have a substantially rectangular cross section.

3: The sealing strip according to claim 1, wherein the first profile portion merges into the second profile portion via a wedge-shaped intermediate portion.

4: The sealing strip according to claim 1, wherein the first profile portion has a convex or undulating outer side.

5: The sealing strip according to claim 4, wherein a concave portion, which merges into the second profile portion, adjoins the first profile portion that defines the convex outer side.

6: The sealing strip according to claim 1, wherein a transition from the first profile portion to the second profile portion forms a shoulder.

7: The sealing strip according to claim 1, wherein the sealing strip is U-shaped on the whole in cross section, and wherein legs of the U merge into the central web and are formed by the two profile portions.

8: The sealing strip according to claim 1, wherein the sealing strip has an end face, which is formed by an upper side of the central web and by an upper side of the first profile portion, wherein the upper sides lie in one plane.

9: The sealing strip according to claim 1, wherein the sealing strip has an end face, which is formed by an upper side of the central web and by an upper side of the first profile portion, wherein the upper side of the central web has a recess.

10: The sealing strip according to claim 7, wherein inner sides of the legs of the U are respectively designed to be planar and are formed by inside faces of the first profile portion and the second profile portion.

11: The sealing strip according to claim 10, wherein the inner sides of the legs extend perpendicular to an inner side of the central web.

12: The sealing strip according to claim 1, wherein the sealing profiles are at least partly compressible.

13: The sealing strip according to claim 1, wherein the sealing strip is flexible on the whole.

14: The sealing strip according to claim 1, wherein the sealing strip is designed as a foam part.

15: The sealing strip according to claim 1, wherein the sealing strip is provided with a material that is impermeable to air, noise-absorbing, soundproof, fire-resistant, impervious to smoke, and/or thermally insulating.

16: The sealing strip according to claim 1, wherein the central web has a perforation.

17: The sealing strip according to claim 9, wherein the recess extends centrally in the sealing strip.

18: The sealing strip according to claim 1, wherein the central web has at least one width-extending element comprising a material selected from the group consisting of a deformable material, a plastic film, a fabric, and a nonwoven.

Description

[0037] Further features and advantages of the invention will become apparent from the description hereinafter and from the attached drawings, to which reference is made. In the drawings:

[0038] FIG. 1 schematically shows a cross section of an inventive sealing strip according to a first embodiment,

[0039] FIG. 2 shows a schematic diagram of the mounting of a drywall with a sealing strip according to the first embodiment,

[0040] FIGS. 3 to 5 respectively show a schematic diagram of the mounting of a drywall with a sealing strip according to further alternative embodiments, and

[0041] FIG. 6 shows a perspective sectional diagram of a drywall during mounting with an inventive sealing strip.

[0042] FIG. 1 schematically shows a cross section through a sealing strip 1 according to a first embodiment. In FIG. 1, sealing strip 1 is illustrated in an uncompressed condition. Sealing strip 1 has two symmetrically disposed lateral sealing profiles 2 and a central web 3. Central web 3 is designed as a flat web, which joins the two sealing profiles 2 to one another. Sealing strip 1 is U-shaped on the whole in cross section. The lateral legs of the U merge into central web 3 and are formed by the two profile portions 4, 5. Sealing profiles 2 are respectively disposed along a longitudinal rim of central web 3. Central web 3 has the function of keeping sealing profiles 2 at a well-defined spacing relative to one another. In addition, central web 3 may contribute to the sealing function of sealing strip 1.

[0043] Each sealing profile 2 has respectively a first profile portion 4 and a second profile portion 5. For better understanding, first profile portion 4 and second profile portion 5 are separated from one another in FIG. 1 by a dashed line 6. However, this is provided merely for illustration; profile portions 4, 5 merge into one another as a single piece. Second profile portion 5 adjoins first profile portion 4 and forms an end of sealing profile 2 remote from central web 3.

[0044] In the embodiment of sealing strip 1 shown in FIG. 1, both first profile portion 4 and second profile portion 5 have a substantially rectangular cross section.

[0045] First profile portion 4 has a first thickness d.sub.1. Second profile portion 5 has a second thickness d.sub.2. The first and the second thickness extend in the direction of a cross-sectional extent of sealing strip 1, i.e. in a transverse direction of central web 3. The longitudinal direction of central web 3 extends in the plane of the drawing.

[0046] Second thickness d.sub.2 is smaller than first thickness d.sub.1. Thereby sealing profile 2 has the form of a step. In particular, the transition from first profile portion 4 to second profile portion 5 forms a shoulder. The shoulder has a width b.sub.A. Width b.sub.A extends in the direction of a transverse extent of sealing strip 1 and is equal to the difference between first thickness d.sub.1 and second thickness d.sub.2. The step shape of the sealing profiles is used, for example, for alignment of gypsum boards, which will be explained in more detail in connection with the following figures.

[0047] Inner sides 7, 8 of the legs of the U are respectively designed to be plane and are formed by inside faces of profile portions 4, 5. Inner sides 7, 8 of the legs extend perpendicular to an inner side 9 of central web 3.

[0048] Sealing strip 1 has an end face 10 opposite inner side 9. End face 10 is formed by an upper side of central web 3 and by an upper side of first profile portion 4. The upper sides of central web 3 and of first profile portion 4 lie in one plane.

[0049] Sealing strip 1 is designed to be flexible on the whole. Thereby the individual sealing profiles 2 are compressible. Sealing strip 1 is manufactured by foaming. In particular, the sealing strip may be provided with a material that is impermeable to air, noise-absorbing or soundproof, fire-resistant, impervious to smoke and/or thermally insulating. For example, sealing strip 1 may be provided with a polyurethane foam.

[0050] FIG. 2 schematically illustrates the mounting of a drywall with the sealing strip 1 according to FIG. 1.

[0051] Sealing strip 1 is pre-mounted between a connecting element 12 and a channel profile 13 of the building. Channel profile 13 may be part of a load-bearing structure of the building. Connecting element 12 may be, for example, a room ceiling or a mounting element for fastening the drywall to an inter-story ceiling, a floor or a wall.

[0052] Sealing strip 1 is mounted in such a way that central web 3 is disposed between connecting element 12 and channel profile 13. In a mounted condition of sealing strip 1, sealing profiles 2 are disposed laterally relative to channel profile 13.

[0053] In the diagram according to FIG. 2, a right board 14 but not yet the left board has already been bolted in place, and so sealing profile 2 is illustrated as compressed on the right side and as uncompressed on the left side.

[0054] Due to the shoulder having width b.sub.A, especially due to its step shape, sealing strip 1 may be used as a mounting aid for the mounting of board 14, especially a gypsum board. This board 14 is positioned in such a way that an edge of board 14 is aligned against the shoulder of sealing profile 2. Thereby a well-defined spacing e of board 14 relative to connecting element 12 is obtained. A spacing e, which is also referred to as the joint width, corresponds substantially to a height h.sub.1 of first profile portion 4. Height h.sub.1 of first profile portion 4 extends in a direction perpendicular to central web 3.

[0055] During bolting of board 14 in place onto the load-bearing structure, sealing strip 1 is compressed in the region of second profile portion 5. Thereby a region between board 14 and channel profile 13 is sealed. For this purpose, thickness d.sub.2 of second profile portion 5 is chosen such that board 14 does not become curved or broken while it is being bolted in place.

[0056] Thickness d.sub.1 of first profile portion 4 is chosen such that sufficient sealing of the gap between 14 and connecting element 12 is ensured.

[0057] Thereby adequate thermal insulation, sound absorption and fire protection may be achieved.

[0058] During mounting of board 14, a cross-sectional change may occur in an upper region of sealing strip 1 due to the compression of sealing strip 1 in the region of second profile portion 5. In particular, the thickness d.sub.1 of first profile portion 4 may be reduced to a value d. This occurs because, while board 14 is being bolted in place, the material of sealing strip 1 is compressed, especially in the region of second profile portion 5, and thus the adjoining material in first profile portion 4 is also compressed. It is therefore recommended that the thickness d.sub.2 of second profile 5 be kept as small as possible, since the cross-sectional change in first profile portion 4 becomes less the smaller d.sub.2 is.

[0059] FIG. 3 shows an alternative embodiment of a sealing strip 1 in a mounted position between a connecting element 12 and a channel profile 13 before board 14 is bolted in place. Sealing strip 1 is designed in a manner similar to that of sealing strip 1 described in connection with FIGS. 1 and 2, but sealing profiles 2 according to this embodiment have an alternative cross section. First profile portion 4 merges into second profile portion 5 via a wedge-shaped intermediate portion 15. Thereby a chamfer 16 is obtained between first profile portion 4 and second profile portion 5.

[0060] FIGS. 4 and 5 show further alternative embodiments of a sealing strip 1.

[0061] Sealing strip 1 according to FIG. 4 is designed in a manner similar to that of sealing strip 1 described in connection with FIGS. 1 and 2, but first profile portion 4 in the embodiment according to FIG. 4 has an outer side 17 that is convex, especially semicircular in cross section.

[0062] Sealing strip 1 according to FIG. 5 is designed in a manner similar to that of the sealing strip described in connection with FIG. 4. In sealing strip 1 shown in FIG. 5, however, a concave portion 18, which merges into second profile portion 5, adjoins the portion that defines convex outer side 17. In particular, sealing profile 2 has an undulating outer side in one portion.

[0063] In the variants described in FIGS. 3 to 5, the user may easily vary joint width e without impacting the function or the final appearance.

[0064] FIG. 6 shows a perspective diagram of a drywall during mounting with a sealing strip 1. Sealing strip 1 is pushed onto channel profile 13, which is to be fastened, together with a beam 19, onto connecting element 12. Thus sealing strip 1 is fixed in a well-defined position and, in fact, in such a way that sealing profiles 2 bear flush on the channel profile. Gypsum boards 14 are aligned against a shoulder of sealing profiles 2, as described hereinabove.

[0065] The foam part of sealing strip 1 may be surrounded on all sides, for example by a film-like outer skin.