EP3856988B1 - Water-discharging joint sealing strip made of foamed material - Google Patents

Description

FIELD OF THE INVENTION

The present invention relates to a joint sealing tape made of foam for different profile dimensions of a drywall framework for sealing structural joints, in particular for sealing against sound and smoke and possibly against fire, the joint sealing tape being water-draining. In particular, the invention relates to the acoustic, smoke-proof and/or fire-proof sealing of connecting joints in drywalls, especially expansion joints, whereby the joint sealing tape is designed in such a way that, despite installation in an early construction phase, the water retention - caused, for example, by rainwater - in the joint sealing tape is reduced and water penetration is reduced /Water escape is accelerated and complete drying of the joint sealing tape is ensured.

BACKGROUND OF THE INVENTION

Connection joints usually arise when different components come together. Connection joints are located in the connection area to the ceiling, floor and solid walls. Weight loads or thermal influences can cause the ceiling of buildings to sink or rise. In order to avoid damage to the drywall, in this case the upper connection joint is designed as an expansion joint. Movement joints are therefore joints that interrupt components and prevent stress cracks. The ceiling profile is designed in such a way that a relative movement between the ceiling profile and the vertical wall components is possible.

In general, a U-profile is attached to the connecting components, which is part of the frame structure. The plasterboard panels themselves are attached at a defined distance from the connecting component. The system is usually sealed in the gap between the plasterboard and the ceiling. To do this, either a suitable sealant is applied or the gap is filled with mineral wool and the surface is provided with a sealing layer. It is also known to seal these joints with various foams and foam sealing tapes, which ensures sufficient movement absorption.

In particular, sealing the gap with foam and foam sealing tapes has some disadvantages. Especially when open-cell foams are used, which are surrounded by a film, and are installed in an early construction phase, rainwater can come into contact with the product, as the facade is often not yet closed or water also enters through openings in ceilings. If it comes into contact with water, the foam can absorb the water and the water escape is restricted by the surrounding film, which prevents the foam from drying quickly. Ultimately, wet seals can cause damage to the building structure.

Joint sealing tapes are, for example, from the US 2004/0045234 A1 and the US 2018/038100 A1 known.

The object of the invention is therefore to provide a joint sealing tape that reduces the storage/accumulation of rainwater when installed in an early construction phase, which in particular accelerates the passage of water/water exit and ensures complete drying of the joint sealing tape - while maintaining a good seal during its use, Excellent tightness with maximum movement absorption and usability for different profile widths of the U-profile of a drywall stud structure.

A further object of the present invention is to provide a water-draining arrangement which, in the event of a fire, enables a better sealing of the joint between two components, in particular between a drywall and a connecting component, such as a wall, a ceiling or a floor, and thus a better and Permanent seal against sound and/or smoke and If necessary, provides better and lasting fire protection and can be installed reliably and error-free with less work, and which, despite installation in an early construction phase, reduces water retention/accumulation - caused by rainwater - in the joint sealing tape, accelerates the passage of water/water exit and ensures a completely dry sealing arrangement.

These and other objects, which will become apparent from the following description of the invention, are solved by the present invention as described in the independent claims. The dependent claims relate to preferred embodiments.

SUMMARY OF THE INVENTION

The present invention relates to a joint sealing tape for sealing a joint between a first component and a second component, with an elongated connecting element and at least two sealing elements, which are positioned at a distance next to one another in the longitudinal direction of the connecting element on the connecting element, the sealing elements and the connecting element being made in one piece from an open-cell slowly burnable foam and are covered by a plastic film, with at least one opening in the plastic film on an underside of the respective sealing element, characterized in that a plurality of openings designed as slots on the underside of the respective sealing element at a distance from one another in the range of 10 up to 80 mm are arranged in order to reduce water retention or accumulation in the joint sealing tape, to accelerate the passage of water or water outflow and to ensure complete drying of the joint sealing tape.

The present invention further relates to a sealing arrangement for sealing a joint between two adjacent components with at least a first component, a second component and the joint sealing tape according to the invention.

Other objects and features of this invention are, in part, apparent and will be explained in part hereinafter. In particular, the subject matter of The present invention is described in detail by reference to the following figures:

BRIEF DESCRIPTION OF THE FIGURES

• Figure 1 shows a perspective front view of a joint sealing tape according to an embodiment of the present invention, on a profile support, wherein the sealing elements have a solid foam profile and a rectangular profile with rounded corners and are covered by a film and there are openings in the plastic film on an underside of the respective sealing element.
• Figure 2 shows a perspective front view of a joint sealing tape according to a further embodiment of the present invention, on a profile support, the joint sealing tape being separated at its perforation and the sealing element having a solid foam profile and a rectangular profile with rounded corners and being covered by a film and located on the There are openings in the form of slots in the plastic film on the underside of the sealing element.

DETAILED DESCRIPTION OF THE INVENTION

The following terms are used within the scope of the present invention:
The term “geometries” in the context of the present invention includes various types of cross-sections and cross-sectional shapes. This means that the sealing elements in particular can have different types of cross-sections and cross-sectional shapes. Cross-section types include round profile (round cross-section), oval profile (oval cross-section), polygonal profile (polygonal cross-section), in particular square profile (square cross-section), rectangular profile (rectangular cross-section), parallelogram profile (cross-section in the form of a parallelogram), triangular profile (triangular cross-section), etc., understood. However, other or mixed cross-sectional shapes are also conceivable and possible, such as a rectangular profile with rounded corners. Cross-sectional shapes include solid profile and hollow profile, whereby in the solid profile the sealing elements consist entirely of sealing material, whereas in the hollow profile the sealing elements only partially consist of sealing material.

The terms "have", "with" and "have" are intended to be inclusive and mean that elements other than those mentioned can also be meant.

The term "intumescence" in the context of the present invention means that under the influence of heat, for example in the event of a fire, the material expands and forms an insulating layer made of flame-retardant material, i.e. intumesces.

In the context of the present invention, “slow-burning foam” is understood to mean a foam that offers no possibility of fire spreading through the foam, is not inherently flammable and does not drip.

“Positioned in the upper area of the joint” means that the sealing elements are arranged in particular laterally on the first component.

The terms “water-draining, water-conducting, water-emitting-promoting, water-permeating-promoting and water-permeable” are equivalent in the sense of the present invention and are to be regarded as synonyms; They mean that water retention/water accumulation in the joint sealing tape is reduced or that the water does not remain in the joint sealing tape for a long time and possibly cause damage to the building structure.

As used in the present invention, the singular forms "a", "an" and "an" also include the corresponding plural forms unless the context clearly indicates otherwise. Thus, for example, the term "a" is intended to mean "one or more" or "at least one" unless otherwise specified.

In one aspect, the present invention relates to a water-draining joint sealing tape for sealing a joint between a first component and a second component, with an elongated connecting element and at least two sealing elements, which are positioned at a distance from one another on the connecting element, running in the longitudinal direction of the connecting element, the sealing elements and the connecting element consist in one piece of an open-cell, slow-burning foam and are covered by a plastic film, which means that is characterized in that there is at least one opening in the plastic film on an underside of the respective sealing element.

In a further aspect, the present invention relates to a water-draining sealing arrangement for sealing a joint between two adjacent components, with at least a first component, a second component and the previously described joint sealing tape, wherein the joint sealing tape is positioned in the upper region of the joint and is configured to: to seal the joint from the outside.

It was found that the joint sealing tape according to the invention is particularly suitable for safely sealing a structural joint between two adjacent components in a simple manner, in particular against sound and/or smoke and possibly also against fire, and that the joint sealing tape is simultaneously suitable for different profile widths, in particular a U-shaped Profile of a drywall frame can be used universally. In addition, it was found that openings on the underside of the sealing elements made of open-cell, slow-burning foam, despite installation in an early construction phase, reduce water retention/accumulation - caused by rainwater - in the joint sealing tape, accelerate the passage of water/water exit and ensure complete drying of the joint sealing tape.

So that the joint sealing tape can also be used for different U-profile widths, the connecting element of the joint sealing tape can have a perforation and/or have a widening element. In addition, it is advantageous that the sealing elements of the joint sealing tape have a predetermined geometry, in particular a rectangular profile with rounded corners.

Therefore, an object of the present invention is to describe the water-draining joint sealing tape. Furthermore, the aim of the present invention is to describe the positioning of the joint sealing tape, in particular a water-draining sealing arrangement.

The water-draining joint sealing tape according to the invention for sealing a joint between a first component and a second component, with an elongated connecting element and at least two sealing elements which are spaced apart are positioned side by side in the longitudinal direction of the connecting element on the connecting element, wherein the sealing elements and the connecting element consist in one piece of an open-cell, slow-burning foam and are covered by a plastic film, which is characterized in that there is at least one opening in the plastic film on an underside of the respective sealing element located.

The at least one opening allows water retention/accumulation caused by rainwater on the construction site when the joint sealing tape is installed early and contact with water through a still open facade or openings in the ceiling to be drained away. When using open cell foams, the water is often absorbed and the flow of water from the surrounding film is impaired, which prevents the foam from drying quickly. Through the at least one opening, which is located on the underside of the respective sealing element in the plastic film, the water retention - caused by rainwater - in the joint sealing tape is reduced, or the water passage/water exit is accelerated and complete drying of the joint sealing tape is ensured.

The openings are in the form of a slot
In a particularly preferred embodiment of the joint sealing tape, there are several openings on the underside of the respective sealing element at a distance from one another in the range of 10 to 60 mm, preferably from 10 to 50 mm, most preferably from 15 to 40 mm.

The openings can be made into the underside of the respective sealing element by cutting, punching, slitting or lasering. Lasering is particularly preferred because it represents a non-contact, precise process step that is particularly used in continuous production. In particular, lasering ensures that no material is removed, there are no chips and/or other contamination in the production line and there is no loss of material on the foam.

In one embodiment of the joint sealing tape, the connecting element has a perforation. The perforation of the connecting element preferably runs in the middle of the connecting element, i.e. in the longitudinal direction of the joint sealing tape. This perforation allows the two halves of the joint sealing tape to be easily separated (teared apart) or alternatively pulled apart. By tearing them apart, without using any tools, you can easily create two separate halves of the joint sealing tape, each with a sealing element, using an adhesive device, such as a separate adhesive tape or adhesive spray, and either for one-sided sealing or for wider U-profiles. in particular U-profiles with profile widths of more than 10 inches (254 mm) can be used. It is also possible for the joint sealing tape to be provided with self-adhesive devices before it is separated, so that after it is torn apart, two half tapes are created, which can be installed immediately without any additional aids. The joint sealing tape halves can therefore be used universally for different profile dimensions.

The sealing elements of the joint sealing tape according to the invention for sealing a joint between a first component and a second component have a predetermined geometry. As already mentioned above, geometries within the scope of the present invention include various types of cross-sections and cross-sectional shapes.

Preferred cross-sectional types of the sealing elements according to the present invention are solid profile and hollow profile, whereby the hollow profile can be a closed or open hollow profile. Solid profiles and hollow profiles with large profile wall thicknesses have the advantage that there is automatically no gap at the joint between two sealing elements that come into contact. Hollow profiles can be more compressed and therefore accommodate more movement. It is particularly preferred that the sealing elements have a full profile.

Preferred cross-sectional shapes of the sealing elements according to the present invention are round profile and polygonal profile, in particular rectangular profile, square profile, oval profile, parallelogram profile and triangular profile. Round profiles and rectangular profiles are particularly preferred, with rectangular profiles being the most preferred. However, other or mixed cross-sectional shapes are also conceivable and possible, such as a rectangular profile with rounded corners, as long as the sealing elements are in place after installation of the joint sealing tape adjoin the two components and can close the joint existing between the components. The sealing elements are preferably positioned on the outer edge of the connecting element.

In a preferred embodiment of the joint sealing tape according to the invention, the sealing elements have a round profile.

In a further, preferred embodiment of the joint sealing tape according to the invention, the sealing elements have an oval profile.

In a further, preferred embodiment of the joint sealing tape according to the invention, the sealing elements have a rectangular profile with rounded corners.

In a particularly preferred embodiment of the joint sealing tape according to the invention, the sealing elements have a solid profile and a round profile.

In a further, particularly preferred embodiment of the joint sealing tape according to the invention, the sealing elements have a solid profile and an oval profile.

In a further, particularly preferred embodiment of the joint sealing tape according to the invention, the sealing elements have a solid profile and a rectangular profile with rounded corners.

The geometry of the sealing elements can be prefabricated, for example by defined cutting, extrusion or pressing of suitable sealing material. The production of such cross-sectional types and cross-sectional shapes is known to those skilled in the art. It is preferred that the geometry of the sealing elements is prefabricated by defined cutting or extrusion. It is particularly preferred that the geometry of the sealing elements is manufactured by extrusion.

According to the invention, the sealing elements and the connecting element consist in one piece of an open-cell, slow-burning foam. Common foam materials such as polyethylene and polyurethane foam or cellular rubber should be mentioned as foam material. The foam can be soaked with an impregnate, which increases the sealing properties of the foam. In order to achieve tightness against smoke, the open-cell sealing elements are covered by a plastic film.

It is advantageous if the cell sizes of the open-cell, slow-burning foam are in a range from 0.1 to 10 mm, preferably from 0.2 to 5.0 mm, most preferably >0.3 mm.

It has proven to be advantageous if the sealing elements consist of a slowly burning foam, such as cellular rubber or polyurethane foam. With slow-burning foam, there is no possibility of fire spreading through the foam. Self-ignition is impossible with the foam raw materials mentioned above. The advantage is that there is no dripping in the event of a fire. A slowly burning foam should still have at least 20%, at least 25%, preferably at least 30%, between 20% to 60%, between 20% to 40%, preferably between 25% in a temperature range between 500 ° C and 800 ° C. up to 30% of its initial volume. Furthermore, a slowly burning foam should still have at least 10%, at least 20%, preferably at least 30%, between 10% to 40%, between 10% to 30%, preferably between 15% in a temperature range between 500 ° C and 800 ° C. up to 20% of its original mass.

Furthermore, if fire protection properties, such as intumescence, are desired, the material can contain appropriate additives. When exposed to heat, such as in the event of a fire, the material expands and forms an insulating layer of flame-retardant material. The formation of a voluminous, insulating layer, namely an ash layer, can be formed by the chemical reaction of a mixture of corresponding coordinated compounds that react with one another when exposed to heat. Such systems are known to those skilled in the art under the term chemical intumescence and can be used according to the invention. Alternatively, the voluminous insulating layer can be formed by expanding a single compound, which releases gases when exposed to heat without a chemical reaction having taken place between two compounds. Such systems are known to those skilled in the art under the term physical intumescence and can also be used according to the invention become. Both systems can be used alone or together as a combination according to the invention.

In a particularly preferred embodiment of the joint sealing tape according to the invention, the open-cell, slow-burning foam consists of an intumescent polyurethane material.

In one embodiment of the joint sealing tape according to the invention, the sealing elements are firmly connected to the connecting element at least over part of their circumference. This creates a firm connection between the connecting element and the sealing elements, so that even when the fastening area is under heavy load and the sealing elements are partially detached from the connecting element, the sealing elements are prevented from completely detaching from the connecting element.

In a further embodiment of the joint sealing tape according to the invention, the sealing elements are firmly connected to the connecting element over their entire circumference. On the one hand, this achieves an optimal and permanent attachment of the sealing elements to the connecting element, which makes it almost impossible for the sealing elements to be detached from the connecting element.

In a particularly preferred embodiment of the joint sealing tape according to the invention, the sealing elements and the connecting element consist of an open-cell intumescent polyurethane material and are completely covered by a polyethylene film.

The area of the connecting element, which lies between the two sealing elements, more precisely between the two points of contact of the connecting element on the sealing element, defines a support area which consists only of the connecting element. The support area is dimensioned so that it corresponds approximately to the width of the web of the U-profile. This makes the installation and in particular the positioning of the joint sealing tape on the web of the U-profile easier. It is preferred that the contact area of the joint sealing tape according to the invention has a width in the range of approximately 30 mm to approximately 300 mm, preferably in the range of approximately 50 to 250 mm, and more preferably in the range of approximately 90 to 155 mm. Particularly It is preferred that the contact area of the joint sealing tape according to the invention has a width of 67 mm for a 2-1/2 inch (64 mm) rail, of 95 mm for a 3-5/8 inch (92 mm) rail, of 105 mm for a 4 inch (102 mm) rail, 155 mm for a 6 inch (152 mm) rail, 206 mm for an 8 inch (203 mm) rail or 257 mm for a 10 inch (254 mm) rail has. It is most preferred that the contact area of the joint sealing tape according to the invention has a width of 95 mm for a 3-5/8 inch (92 mm) rail or of 155 mm for a 6 inch (152 mm) rail.

In order to obtain different profile dimensions, in particular different widths of the support area, the connecting element of the joint sealing tape according to the invention can also have at least one widening element. It is preferred that the widening element is in the form of a loop. The widening element consists of a deformable material, a plastic film, a fabric, a fleece or the like, preferably a plastic film such as polyethylene.

This widening element is attached to the top or bottom of the connecting element so that a loop is created. Fastening is done by sewing, gluing or welding, preferably by welding. The dimension of the loop is such that after the two halves of the joint sealing tape have been pulled apart by cutting through the perforation of the connecting element, the desired width for an alternative profile is created. A second profile dimension can be obtained through a separation step, i.e. the joint sealing tape can, for example, be used for a 3-5/8 inch (92 mm) or 6 inch (152 mm) rail at the same time.

Furthermore, the joint sealing tape according to the invention can have one or more additional widening elements in the form of loops. These additional widening elements can be obtained by dividing the loop of the at least one widening element one or more times with a weld seam, so that several profile widths can be covered with one product by appropriately separating the seam or seams. In particular, the common U-profiles with profile widths of 2-1/2 inches (64 mm), 3-5/8 inch (92 mm), 4 inch (102 mm), 6 inch (152 mm), 8 inch (203 mm) and 10 inch (254 mm) can be covered. This makes the installation and in particular the positioning of the joint sealing tape on the web of the U-profile easier. To make it easier to select the desired width of the joint sealing tape for a specific profile, the widening elements can be provided with markings for the specific profile sizes. However, due to the flexibility of the widening element, it is possible to also cover other profile widths of U-profiles of a dry stud structure with the joint sealing tape according to the invention and to seal the joint.

The joint sealing tape according to the invention provides a universal product for various profile sizes and applications, which can also be produced cost-effectively in a production line and is also water-draining.

The dimension and material of the joint sealing tape, in particular both the sealing elements and the connecting element, are selected according to the planned use of the joint sealing tape.

In general, the dimensions of the sealing elements are selected depending on the types of profiles and the material used. The dimension must be chosen so that the sealing element fills the gap between the plasterboard and the ceiling and seals against both the ceiling and the plasterboard. If vertical movement of the plasterboard is to be permitted, the sealing element must follow the movement of the plasterboard so that the contact with the plasterboard does not break and no gap can arise between the sealing element and the plasterboard. For this purpose, the sealing element is preferably made of open-cell foam material and is pre-compressed accordingly during assembly of the plasterboard so that a downward movement of the plasterboard can be followed, thereby increasing the gap between it and the ceiling. The preset freedom of movement of the plasterboard thus determines the dimensions of the sealing element.

The sealing elements can be positioned on a component in one step using a connecting element. It is also possible that the connecting element and/or the sealing elements themselves have means for fastening a component, such as a drywall profile, for example in the form of a self-adhesive layer, in the form of positive or non-positive means, such as suitable profiles, or the like. Optionally, individual positioning of the sealing elements is also possible, for example if the joint sealing tape is separated at the perforation and two halves of the joint sealing tape will be obtained. However, the joint sealing tape according to the invention is preferably positioned on a component in one step.

To create a water-draining sealing arrangement according to the invention, the joint sealing tape according to the invention is positioned on the first component before attaching a first component and then fastened together with it to a second component in the usual way, for example by screwing or nailing. Preferably, the first component is a frame profile of a drywall framework, such as a U-profile, and the second component is a wall, a ceiling or a floor of a building. The first component is particularly preferably a U-profile and the second component is a ceiling. With this arrangement, the joint sealing tape is positioned in the upper region of the joint and configured to seal the joint from the outside.

In one option for sealing a connecting joint in drywall construction, the joint sealing tape is positioned on a U-profile before attaching the profile to the connecting components, such as a ceiling, and then attached to the ceiling together with this. In a further operation, the plasterboard panels, one or two layers, are pressed on the front side of the sealing element, so that in the case of double planking, the two plasterboard panels each come into contact with their upper edge with the sealing element, thereby sealing the joint. In order to allow movement of the plasterboard(s) without creating a gap between the sealing element and the plasterboard(s) during maximum movement, the sealing element must be compressed when installing the plasterboard(s).

The material and thickness of the sealing element are selected so that the sealing element does not hinder the movement of the plasterboard(s) and, at the maximum joint width, the upper edge of the plasterboard(s) continues to touch the sealing element in order to ensure adequate sealing against gases. The width of the sealing element is preferably chosen so that it is approximately twice the width of one Corresponds to plasterboard. It has been found that adequate sealing can be achieved even if the width of the sealing element corresponds to the width of just one plasterboard.

When arranging the joint sealing tape on the U-profile and in abutment with the ceiling, unevenness in both components can be compensated for and simple positioning without gluing is possible. Furthermore, the joint spacing can be controlled by the subsequent positioning of the plasterboard as well as by the selection of the sealing materials and/or geometry design of the joint sealing tape.

Alternatively, if only one plasterboard is used, it cannot be mounted from below in abutment with the sealing element, but rather in such a way that the plasterboard partially overlaps the sealing element. As a result, the plasterboard partially projects beyond the sealing element and the overlapping part of the sealing element is pressed between the U-profile and the plasterboard. It has been found that this can also achieve sufficient sealing, particularly against gases. To improve the tightness and/or sliding properties, the sealing tape can be laminated on one side with a layer made of a material that neither hinders the movement of the plasterboard nor is destroyed by it, such as a plastic film. For example, the positioning mark for the plasterboard can easily be applied to a film.

This type of installation allows a large amount of movement to be absorbed in relation to the width of the joint. Furthermore, this type is easier to install than the previously mentioned single or double planking, as the plasterboard can be easily mounted on the sealing element without measuring the distance. When using a positioning mark, the plasterboard can be installed without measuring the distance. In addition, with this type of assembly you do not have to rely on easily compressible materials for the sealing elements and therefore have relatively great freedom in choosing the material.

In a further, particularly preferred alternative, the joint can be sealed if, with double planking, the two plasterboard panels are installed horizontally offset in such a way that the outer of the two plasterboard panels (also called the outer, second plasterboard) is mounted higher (i.e. closer to the ceiling) than the inner plasterboard (also called the inner, first plasterboard). In this embodiment, the thickness of the sealing element is selected according to the thickness of a plasterboard. The first, inner plasterboard is mounted in such a way that its upper edge touches the end faces of the sealing element, with little or no pre-compression of the sealing element being required. The second, outer plasterboard is installed horizontally offset, i.e. it is mounted higher than the first, inner plasterboard so that it partially covers the sealing element. The sealing element and the plasterboard should seal against each other in order to seal the gap between the outer, second plasterboard and the sealing element, especially against gases. This creates a seal between the sealing element and the second component, such as a ceiling, a wall or a floor, as well as between the sealing element and the outer, second plasterboard.

An empty gap remains between the second component, such as a ceiling, a wall or a floor, and the outer, second plasterboard. In the event of a vertical movement of the second component or the plasterboard, this gap is completely available to accommodate movement.

Depending on how far the outer, second plasterboard panel covers the sealing element (size of the offset), a movement in the other direction can also be accommodated. It is important that in this case there is an overlap between the second plasterboard and the joint sealing tape. The dimension of the sealing element is therefore preferably chosen so that its thickness is slightly larger than the thickness of a plasterboard and its height is slightly more than the maximum permissible movement of the components (maximum joint width).

Because the thickness of the sealing element is greater than the thickness of the plasterboard, the plasterboard is pressed against the sealing element during assembly and is somewhat compressed, whereby the gap between the sealing element and the plasterboard is reliably sealed, especially against gases.

To make it easier to set the correct joint size on the outer, second plasterboard, markings can be made on the side of the joint sealing tape, a so-called positioning mark. To improve the tightness and/or the sliding properties, the sealing tape can be laminated on one side with a layer made of a material that neither hinders the movement of the plasterboard nor is destroyed by it, such as a plastic film. For example, the positioning marking for the outer, second plasterboard panel can easily be applied to a film.

With this type of installation, maximum movement absorption is possible in relation to the joint width. Furthermore, this type is very easy to install because, on the one hand, the first plasterboard can be easily mounted in contact with the sealing element without measuring the distance. Secondly, particularly when using a positioning mark, the second plasterboard can also be mounted without distance measurement. In addition, this type of assembly provides the greatest possible freedom in choosing the material for the sealing elements, since they are only slightly compressed and therefore only low demands are placed on the compressibility of the sealing element.

According to the invention, the joint sealing tape can be used on all types of connection joints in which one component meets another component. Accordingly, the joint sealing tape can be used on all profiles, including closed profiles or wooden beams, that need to be sealed to form a connecting surface. In particular, the joint sealing tape can also be used for sealing trapezoidal/corrugated sheets or for sealing from floor to wall, where they particularly enable improved drying.

A particularly preferred application of the joint sealing tape therefore relates to the sealing of the profiles in drywall construction, the first component being a ceiling, floor or wall profile or a metal or wooden frame of a drywall element, and the second component being a floor, a ceiling or a wall Building element, for example a masonry or concrete building element. The profile can be any of the commonly used drywall profiles, regardless of whether it has a slotted or unslotted web or slotted or unslotted flanges. The other components are plasterboard panels that fit closely to the profiles and are attached to the stud frame. In order to allow vertical movement of the plasterboard, for example in the event of an earthquake, the plasterboard is placed at a distance from a wall, floor or ceiling, mounted vertically movable. This creates a gap (also called a joint) between the plasterboard and the wall, floor or ceiling. This joint is filled by the sealing element of the joint sealing tape, so that the sealing element seals the joint against sound and/or smoke and, depending on the material of the joint sealing tape, possibly also against fire.

Without restricting the scope of protection of the invention, the invention will be described in more detail using special embodiments of the joint sealing tape. In these embodiments, the joint sealing tape is applied to the connection joints in drywalls. It is clear to the expert that the sealing tape can also be used on other types of structural joints.

In Figure 1 a perspective front view of a preferred embodiment of a joint sealing tape 1 according to the invention is shown on a profile support 7. The joint sealing tape 1 in Figure 1a has two sealing elements 3a and 3b, which are positioned on the outer edges of the connecting element 2. The sealing elements 3a and 3b have a rectangular profile with rounded corners and a solid profile, with the connecting element 2 being positioned laterally on the sealing elements 3a and 3b. Furthermore, the sealing elements 3a and 3b and connecting element 2 are made in one piece and consist of an open-cell, slow-burning foam, which may contain fire protection additives. The joint sealing tape 1 is completely covered by a plastic film 4 and may have a perforation (P) in the longitudinal direction of the joint sealing tape 1 (not shown). On the underside of the respective sealing element 3a and 3b there are openings 5 in the form of laser-cut holes in the plastic film 4.

Figure 2 shows a perspective front view of a joint sealing tape according to a further embodiment of the present invention, on a profile support, the joint sealing tape being separated at its perforation and the sealing element having a solid foam profile and a rectangular profile with rounded corners and being covered by a film and located on the There are openings in the form of slots in the plastic film on the underside of the sealing element. After separation, the two joint sealing tape halves each have a sealing element 3a or 3b (not shown), each a part 2a or 2b (not shown) of the connecting element 2 and are each partially with Plastic film 4 covered. On the underside of the sealing element 3a there are openings 5 in the form of slots in the plastic film 4.

Rain tests on the cut edge of the joint sealing tape:

Test procedure: The front of the joint sealing tape is watered with a stream of water (0.5 l/min) for at least 24 hours. The water absorption g/time is then measured via the increase in weight, the water spread over the horizontal cm/time is checked using a building moisture sensor, and the water release is measured over the drying after an observation period of >7 days (water release=drying g/time).

Openings in the film at the lower position (underside of the sealing element) positively influenced all of the above parameters. It was observed that the openings have a certain opening size, ideally a diameter of at least 1 mm, preferably 3 mm, is advantageous. The distance between the openings should not be greater than 60 mm, preferably in the range of 10-40 mm. A slot-like opening sometimes shows even better results in terms of water spreading because the water's path is extended. With hydrophobic foams, the suction effect is interrupted. The spread is also interrupted via capillary forces. Ideally, these measures are combined with a hydrophobic foam and/or an open-cell, preferably large-pored foam. Cell sizes affect water drainage to a greater or lesser extent. The best results in this context were achieved with cell sizes of the open-cell foam material of >0.3 mm. The cell stabilizers used also had beneficial effects, as they can influence cell sizes as well as the properties of the cell wall as well as cell structure and hydrophobic foam properties.

Rain tests have shown that the joint sealing tape according to the invention absorbs less water, that a balance is achieved very quickly between water absorption at the cut edge and water release via the drainage openings, that the openings cause a smaller and shorter horizontal spread of water, and that the joint sealing tape has significantly better drying behavior and that air contained in the joint sealing tape can easily escape from the foam when installing the plasterboard and ultimately, it should If the foam has absorbed water, it can be squeezed out very easily because the water can drain away at any point.

As can be seen from the above, the water-draining joint sealing tape according to the invention is particularly suitable for safely sealing a structural joint between two adjacent components in a simple manner, in particular against sound and/or smoke and possibly also against fire, and at the same time can be used universally for different profile widths . In particular, it has been shown that the inventive system ensures the acoustic, smoke-proof and/or fire-proof sealing of connection joints in drywalls, especially of movement joints, and that despite installation in an early construction phase, water retention/water accumulation - caused by rainwater - in the joint sealing tape is reduced, the passage of water /Water escape is accelerated and complete drying of the joint sealing tape is ensured.

In addition, the joint sealing tape according to the invention can be used universally for different profile widths of a U-profile of a drywall frame, in particular for the usual profile widths of 2-1/2 inches (64 mm), 3-5/8 inches (92 mm), 4 inches (102 mm), 6 inches (152 mm), 8 inches (203 mm) and 10 inches (254 mm). The joint sealing tape according to the invention provides a universal product for various profile sizes and applications, which can also be produced cost-effectively in a production line.

Furthermore, the application is very easy to install, as no additional attachment of the joint sealing tape to the profile or ceiling is necessary. A precise application of the joint sealing tape to a profile is also not necessary due to the self-centering of the joint sealing tape when installing the profile on a component. Installation is therefore extremely easy and the amount of work required to install the joint sealing tape is significantly reduced. The invention therefore achieves a secure and reliable sealing of joints between two components, in particular between a profile of a drywall framework and an adjacent component, such as a ceiling, wall or floor. A seal on both sides can be achieved in just one operation by providing a prefabricated sealing element.

Furthermore, it has been shown that excellent seals can be achieved with the joint sealing tape according to the invention, since good compressibility of the sealing elements is ensured by selecting the sealing materials and / or geometric design without additional aids. The invention also makes it possible, through appropriate selection of the sealing materials and/or geometry design, to set the correct distance from the plasterboard to the connecting component without additional aids in order to achieve said pre-compression.

With the joint sealing tape according to the invention, unevenness of a component surface can also be securely sealed when a component is placed on another component, since the sealing elements of the joint sealing tape are pressed sufficiently firmly onto the surface of one component and at the same time onto the side surfaces of the other component.

In view of the foregoing, it can be seen that the objects of the invention are achieved. Since various changes can be made to the above-described joint sealing tape within the scope of the appended claims without departing from the scope of the invention, it is intended that all matters contained in the above description be interpreted as illustrative and not in a limiting sense.

Claims (15)

1. Joint sealing tape (1) for sealing a joint between a first component and a second component, having an elongate connecting element (2) and at least two sealing elements (3a, 3b), which are positioned on the connecting element (2) so as to be spaced apart next to one another and so as to extend in the connecting element longitudinal direction, the sealing elements (3a, 3b) and the connecting element (2) consisting integrally of an open-cell slow-burning foam and being encased by a plastics film (4), at least one opening (5) in the plastics film (4) being located on an underside of the relevant sealing element (3a, 3b), characterized in that a plurality of openings (5), designed as slots, are arranged on the underside of the relevant sealing element (3a, 3b) at a distance from one another in the range of 10 to 80 mm, in order to reduce water retention or water accumulation in the joint sealing tape, to accelerate the passage of water or discharge of water and to ensure full drying of the joint sealing tape.
2. Joint sealing tape (1) according to claim 1, characterized in that the connecting element (2) has a perforation (P).
3. Joint sealing tape (1) according to either claim 1 or claim 2, characterized in that the sealing elements (3a, 3b) are positioned on the outer edge of the connecting element (2).
4. Joint sealing tape (1) according to any of the preceding claims, characterized in that the sealing elements (3a, 3b) are rigidly connected to the connecting element (2) at least over a part of their circumference.
5. Joint sealing tape (1) according to any of the preceding claims, characterized in that the sealing elements (3a, 3b) have a circular profile, oval profile or a rectangular profile with rounded corners.
6. Joint sealing tape (1) according to any of the preceding claims, characterized in that the open-cell, slow-burning foam consists of an intumescent polyurethane material.
7. Joint sealing tape (1) according to any of the preceding claims, characterized in that the sealing elements (3a, 3b) and the connecting element (2) consist of an open-cell intumescent polyurethane material and are fully encased by a polyethylene film (4).
8. Joint sealing tape (1) according to any of the preceding claims, characterized in that the connecting element (2) further comprises at least one widening element (6).
9. Joint sealing tape (1) according to claim 8, characterized in that the widening element is in the form of a loop.
10. Joint sealing tape (1) according to either claim 8 or claim 9, characterized in that the widening element consists of a deformable material, a plastics film, a woven fabric, a non-woven fabric or the like, preferably of a plastics film.
11. Joint sealing tape (1) according to any of the preceding claims, characterized in that the at least one opening (5) has a diameter in a range of from 1 to 10 mm.
12. Joint sealing tape (1) according to any of the preceding claims, characterized in that a support region, which is located between the two points of contact of the connecting element (2) on the sealing elements (3a, 3b), has a width in the range of approximately 30 mm to approximately 300 mm, preferably in the range of approximately 50 to 250 mm, more preferably in the range of approximately 90 to 155 mm.
13. Sealing assembly for sealing a joint between two adjacent components, having at least a first component (7), a second component (9) and a joint sealing tape (1) according to any of claims 1 to 12,
    characterized in that the sealing elements (3a, 3b) are positioned in the upper region of the joint, preferably on the first component (7), and are designed to seal the joint from the outside.
14. Sealing assembly according to claim 13, characterized in that the sealing elements (3a) and (3b) are laterally arranged on the first component (7).
15. Sealing assembly according to either claim 13 or claim 14, characterized in that the first component (7) is a frame profile of a drywall and the second component (9) is a wall, a ceiling or a floor, preferably a ceiling, of a building.

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