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. An apparatus, comprising: a profile piece with a U-shaped cross section comprising a base portion with oppositely disposed edges and extending in an extent direction and two limb portions coupled to respective ones of the oppositely disposed edges in a direction transverse to the extent direction; and; a sealing device comprising: a retaining portion between the base portion and a connecting building element in an installed state, a sealing portion extending in direction transverse to the extent direction and comprising a plurality of kinking points, and a positioning portion coupled to the sealing portion, wherein the retaining portion and the sealing portion are disposed to form a cavity provided by an upper edge of a drywall panel in the installed state, one of the two limb portions, and the retaining portion and the sealing portion, and wherein the kinking points form a plurality of angled segments that move in order to absorb relative movement of the drywall panel and the connecting building element.

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

3. The apparatus according to claim 1, wherein the plurality of angled segments of the sealing portion are tilted toward one another, at least one of which is oriented at an inclination or transverse to the extent direction of one or both of the two limb portions of the profile piece.

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

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

6. The apparatus according to claim 1, further comprising a sealing element between in a gap between the positioning portion and a side of the drywall panel.

7. The apparatus according to claim 1, further comprising a projecting stop element between the retaining portion and the sealing portion.

8. The apparatus according to claim 3, wherein at least one of the kinking points serve as a positioning and mounting aid for the drywall panel between the retaining portion and the sealing portion.

9. The apparatus 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.

10. The apparatus according to claim 1 further comprising 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.

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

Description

BRIEF DESCRIPTION OF THE FIGURES

(1) Embodiments will be explained in more detail hereinafter on the basis of the attached drawings, wherein:

(2) FIG. 1 shows a cross-sectional diagram through a rim portion of a drywall with a sealing device according to a first embodiment; and

(3) FIG. 2 shows a cross-sectional diagram through a rim region of a drywall with a sealing device according to a further embodiment.

DETAILED DESCRIPTION OF THE FIGURES

(4) 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.

(5) 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.

(6) 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.

(7) Usually such profile pieces 3 are equipped with regular slits, which are disposed in distributed manner along the extent direction of profile piece 3.

(8) 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.

(9) 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.

(10) 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.

(11) 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.

(12) 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.

(13) 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.

(14) 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.

(15) 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.

(16) 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.

(17) 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).

(18) 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.

(19) 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.

(20) 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.

(21) 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.

(22) 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.

(23) 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.