DRYWALL AND SEALING DEVICE FOR SEALING A CONNECTION JOINT OF A DRYWALL

Abstract

A drywall can be used as an attachment to a connecting building element. The drywall includes a connecting profile, at least one drywall panel, and at least one flat sealing device. The flat sealing device extends in an extent direction and has, transverse thereto, a retaining portion for positioning between a base portion and the connecting building element, a sealing portion, and a positioning portion for positioning on an outer side of the drywall panel. The flat sealing device is so disposed that a cavity is formed between an edge of the drywall panel, the connecting building element, the limb portion of the connecting profile, and the sealing portion.

Claims

1: A drywall for attachment to a connecting building element, the drywall comprising: a connecting profile, which has, extending in an extent direction, a profile piece with a U-shaped cross section, wherein the cross section of the profile piece has a base portion with oppositely disposed edges transverse to the extent direction, wherein a limb portion protrudes from the oppositely disposed edges; at least one drywall panel, which is fastened to an outer face of a limb portion of the U-shaped cross section of the profile piece, such that the drywall panel protrudes transversely from the connecting building element; and at least one flat sealing device, which extends in the extent direction and has, transverse thereto, a retaining portion for positioning between the base portion and the connecting building element, a sealing portion and a positioning portion for positioning on an outer side of the drywall panel, wherein the flat sealing device is so disposed that a cavity is formed between an edge of the drywall panel, the connecting building element, the limb portion of the connecting profile and the sealing portion.

2: The drywall according to claim 1, wherein the flat sealing device is coated or equipped in the region of the sealing portion with an intumescent material, so that the cavity becomes completely or partly filled by the intumescent material being formed under the effect of heat, or the sealing portion comprises an ablatively acting fire-protection additive.

3: The drywall according to claim 1, wherein the flat sealing device is equipped in the region of the sealing portion with at least one kinking point, in order to form at least two segments of the sealing portion that can be tilted toward one another, at least one of which is oriented at an inclination or transverse to the extent of the limb portion of the profile piece.

4: The drywall according to claim 3, wherein the flat sealing device is equipped in the region of the sealing portion with three kinking points, so that two segments of the sealing portion that can be tilted toward one another form a V-like shape.

5: The drywall according to claim 4, wherein the V-like shape of the segments of the sealing portion point in the direction of the limb portion or in a direction opposite thereto.

6: The drywall according to claim 1, wherein the positioning portion of the flat sealing device 1 is equipped with a sealing element, in order to seal a gap relative to the positioning portion and the drywall panel.

7: The drywall according to claim 1, wherein a projecting stop element is provided between the retaining portion and the sealing portion.

8: The drywall according to claim 3, wherein the at least one kinking point functions as a positioning and mounting aid between the retaining portion and the sealing portion.

9: A flat sealing device for a drywall, wherein the flat sealing device is elongated in an extent direction and, transverse thereto, has a retaining portion, a sealing portion and a positioning portion, wherein the sealing portion comprises, at least on one side, an intumescent material, or wherein the sealing portion comprises an ablatively acting fire-protection additive.

10: The flat sealing device according to claim 9, wherein the flat sealing device is equipped in the region of the sealing portion with kinking points, in order to form several segments of the sealing portion that can be tilted toward one another.

11. (canceled)

12: The drywall according to claim 1, wherein the connecting building element is selected from the group consisting of a room ceiling, a floor, and a solid wall.

13: The drywall according to claim 1, wherein a projecting stop element is provided between the retaining portion and the sealing portion, and wherein the projecting stop element is a bead protruding in the direction of the cavity.

14: A method of making the drywall according to claim 1, the method comprising: attaching the flat sealing device to the drywall panel, wherein, upon said attaching, the flat sealing device is disposed such that a cavity is formed between an edge of the drywall panel, the connecting building element, the limb portion of the connecting profile and the sealing portion.

Description

DETAILED DESCRIPTION OF THE FIGURES

[0033] FIG. 1 shows a cross-sectional diagram of a connecting region A of a drywall 1 on a connecting building element 2. Connecting building element 2 may be a portion of a floor, of a room or inter-story ceiling or of a solid wall of a building.

[0034] In connecting region A, drywall 1 is equipped with a connecting profile that has a profile piece 3. Profile piece 3 has a substantially U-shaped cross section and extends in the manner of a rail along the extent direction (in the drawing plane) of drywall 1 in connecting region A. Profile piece 3 is usually formed from a metallic material (sheet metal); in particular, it is manufactured from a metal sheet by one or more stamping processes and a subsequent bending process. Thereby U-shaped profile piece 3 has a base portion 31 and two limb portions 32 protruding from base portion 31. Profile piece 3 is fastened in appropriate manner with one outer face of base portion 31 to connecting building element 2.

[0035] A core element 4, which corresponds to a carrier element of the drywall and may be formed with an absorbing or insulating material, may be disposed between limb portions 32, spaced apart from the inner face of base portion 31. Core element 4 may be fastened by means of screws to one or both limb portions 32 of profile piece 3, so that a rim region of core element 4 extends between limb portions 32. The screw connection of core element 4 is achieved by fixation with screws through corresponding fastening openings 33 in limb portions 32 of profile piece 3.

[0036] Usually such profile pieces 3 are equipped with regular slits, which are disposed in distributed manner along the extent direction of profile piece 3.

[0037] Drywall panels 6, which are attached in appropriate manner by screws, are connected to limb portions 32 of profile piece 3. Such drywall panels 6 are known and are usually formed from a gypsum-cardboard composite material. Drywall panels 6 are disposed spaced apart from connecting building element 2, so that a joint 7 is formed over the entire extent of drywall 6 along connecting building element 2.

[0038] Because of joint 7, smoke gases and flames may come into contact with profile piece 3 in the fire situation and thereby cause heating of profile piece 3. Thereby, due to the metal material of profile piece 3, a temperature rise may occur on the side of profile piece 3 facing away from the fire. In particular, the temperature on the side facing away from the fire may rise so much due to heat conduction through the material of profile piece 3 or to penetrating smoke gases that a critical temperature overshoot may develop.

[0039] In the embodiment shown in FIG. 1, a sealing device 10 is further provided that extends substantially along the extent direction of profile piece 3. The tape-like sealing device 10 functions to form a cavity in the region of joint 7 between the edge of drywall panel 6 and connecting building element 2 and limb portion 32 of the connecting profile.

[0040] Sealing device 10 is preferably formed from a flat material with a thickness of between 1 and 3 mm. In particular, sealing device 10 may be formed from a fire-retardant, fireproof and heat-resistant material. Suitable materials for sealing device 10 include materials such as foil, paper, nonwoven, fiber composite material, plastic, metallic materials or the like, especially a foil.

[0041] Relative to its cross section, sealing device 10 has a retaining portion 10a, which in the mounted state extends at least partly between connecting building element 2 and base portion 31 of the connecting profile. A sealing portion 10b is connected to retaining portion 10a on one side or both sides of retaining portion 10a and in its further continuation merges into a positioning portion 10c. Positioning portion 10c functions to position sealing device 10 on an outer side of the rim region of drywall panel 6 and then to attach or to fasten it on drywall panel 6, especially by stapling but also by adhesive bonding or by the use of interlocking and force-fitting means. Sealing portion 10b has a cross-sectional geometry for forming a cavity 11 with limb portion 32 of profile piece 3 and an end face of drywall panel 6. Cavity 11 offers thermal insulation and prevents hot smoke gases or flames from acting directly on profile piece 3 in the fire situation.

[0042] In order to achieve imperviousness to smoke for the fire situation, positioning portion 10c may further be equipped with a sealing element 12, in order in the mounted state to prevent smoke gases from being able to penetrate through an intermediate space between drywall panel 6 and sealing device 10 into cavity 11.

[0043] Sealing element 12 is disposed on an inner face of positioning portion 10c. The inner face of positioning portion 10c corresponds to the face that in the mounted state points in the direction of drywall panel 6. The material of sealing element 12 may contain a PU foam, mineral wool or the like, so that reliable sealing of a possible gap between drywall panel 6 and positioning portion 10c of sealing device 10 is achieved.

[0044] In the embodiment of FIG. 1, retaining portion 10a is formed with a width that is greater than the width of base portion 31 of profile piece 3, and sealing portion 10b has several kinking points, in the shown exemplary embodiment three kinking points 10d, in order to form segments 10e and to be able to absorb a movement of drywall panel 6 relative to connecting element 2 by movements of segments 10e of sealing portion 10b at kinking points 10d. For this purpose, at least two segments 10e linked to one another are provided, which are oriented at an inclination or transverse to the direction of the extent of limb portions 32.

[0045] During a movement of drywall panel 6 relative to connecting building element 2, segments 10e of sealing portion 10b formed between kinking points 10d move relative to one another. By provision of acute angles between segments 10e in the mounted state, it is possible to ensure absorption of relative movements between drywall panel 6 and connecting building element 2 with particularly little effort.

[0046] At least two of the segments 10e are now able to form, in cross section, a V-shape or a V-like shape, which relative to the formed cavity 11 extends inwardly (right side in FIG. 1) or outwardly (left side in FIG. 1).

[0047] A further embodiment is illustrated in FIG. 2, wherein a cavity 11 is likewise formed by a sealing portion 10b. In contrast to the embodiment of FIG. 1, sealing portion 10b has only one kinking point 10d, so that the segments respectively represent the extensions of retaining portion 10a and of positioning portion 10c.

[0048] In order to absorb the movement of drywall panel 6 relative to connecting building element 2, drywall panel 6 slides along sealing device (10), especially along sealing element 12.

[0049] For the region of the transition between retaining portion 10a to sealing portion 10b, a stop element 13, protruding in the direction of sealing portion 10b and having the form of a bead or the like, for example, may be formed in order to achieve optimum positioning of sealing device 10 prior to mounting of drywall panel 6. Thereby it is ensured that sealing device 10 extends substantially parallel to the extent direction of connecting profile 3 or of drywall 1.

[0050] Alternatively, it is also possible for sealing device 10 to be so configured by kinking of sealing portion 10b inward at kinking point 10d that it may be easily mounted by placing the end of sealing portion 10b flush against profile piece 3, meaning that kinking point 10d functions as a positioning and mounting aid.

[0051] For the region of the transition between retaining portion 10a to sealing portion 10b, a stop element 13, protruding in the direction of sealing portion 10b and having the form of a bead or the like, for example, may be formed in order to achieve, for insertion of retaining portion 10a of sealing device 10 between connecting profile 3 and connecting building element 2, simplified positioning during mounting of drywall 1. Thereby it is ensured that sealing device 10 extends substantially parallel to the extent direction of connecting profile 3 or of drywall 1.

[0052] Both in the embodiment of FIG. 1 and also that of FIG. 2, sealing device 10 may be equipped in the region of sealing portion 10b with an intumescent material 14, so that, in the fire situation, cavity 11 becomes filled by the intumescent material being formed and thereby additional sealing and insulation is achieved, or it may contain an ablatively acting fire-protection additive, in which case both individual compounds and a mixture of several compounds may be used as additives. The intumescent material may be an intumescent foam, an intumescent coating or an intumescent strip. Intumescent material is generally understood as a material that swells and forms an insulating layer of flame-retardant material under the effect of heat, for example in the fire situation.