EP3856988A1

EP3856988A1 - Water-conducting joint sealing strip made of foam

Info

Publication number: EP3856988A1
Application number: EP19772733.2A
Authority: EP
Inventors: Christian Förg; Jekaterina MILLER; Roland Weixler; Mario Paetow; Andreas OBER
Original assignee: Hilti AG
Current assignee: Hilti AG
Priority date: 2018-09-25
Filing date: 2019-09-23
Publication date: 2021-08-04
Anticipated expiration: 2039-09-23
Also published as: US20220098854A1; JP2022503777A; EP3856988B1; JP7162735B2; CA3107915A1; EP3628789A1; WO2020064613A1; AU2019349597A1; US11441310B2

Abstract

The invention relates to a water-conducting joint sealing strip, which can be universally used for different profile dimensions, for sealing building joints, in particular for sealing against sound and/or smoke and, where appropriate, against fire. In particular, a joint sealing strip for sealing a joint between a first component and a second component is described, comprising an elongate connection element and at least two sealing elements, which are positioned next to one another on the connection element so as to be spaced apart and extend in the longitudinal direction of the connection element. The sealing elements and the connection element consist as a single piece of an open-cell, slow-burning foam and are encased in a plastics film. The joint sealing strip is characterised in that there is at least one opening in the plastics film on the underside of the particular sealing element. The invention further relates to a water-conducting sealing arrangement for sealing building joints, in particular for sealing against sound and/or smoke and, where appropriate, against fire, having a joint sealing strip of this type.

Description

WATER-DISCHARGING FOAM SEALING TAPE

FIELD OF THE INVENTION

The present invention relates to a joint sealing tape made of foam for different profile dimensions of a dry construction framework for sealing structural joints, in particular for sealing against noise 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 connection joints in drywall, especially of

Expansion joints, whereby the joint sealing tape is designed in such a way that, despite installation in an early construction phase, water retention - caused, for example, by rainwater - in the joint sealing tape is reduced, water penetration / leakage is accelerated and complete drying of the joint sealing tape is ensured.

BACKGROUND OF THE INVENTION

Connection joints are usually created when different components meet. Connection joints are located in the connection area to the floor ceiling, to the floor and to solid walls. Due to weight or thermal influences, the ceiling can be lowered or raised in buildings. In order to avoid damaging the drywall, the upper connection joint is designed as a movement joint. Movement joints are therefore joints to interrupt components that 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 connection components, which is part of the stud frame. 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. For this purpose, either a suitable sealing compound is introduced or the gap is filled with mineral wool and provided with a sealing layer on the surface. 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 foams and foam sealing tapes has some disadvantages. In particular, if open-cell foams are used that are surrounded by a film and are installed in an early construction phase, rainwater can come into contact with the product, since the facade is often not yet closed or water also enters through openings in ceilings. When in contact with water, the foam can absorb the water and the water leakage is impaired by the surrounding film, which prevents the foam from drying quickly. Finally, damp seals can damage the building structure.

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

Another 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 Provides permanent sealing against noise and / or smoke and, if necessary, better and permanent fire protection and can be installed reliably and error-free with less work, and which despite installation in an early construction phase, water retention / water accumulation - caused by rain water - reduced in the joint sealing tape, the water penetration / water outlet accelerated and a complete dry sealing arrangement ensured. These and other objects that will become apparent from the following description of the invention are achieved 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 spaced apart 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 line slow-burning foam and are encased in a plastic film, characterized in that there is at least one opening in the plastic film on an underside of the respective sealing element.

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 obvious and are in part explained below. In particular, the subject matter of the present invention is described in detail by reference to the following figures:

BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 shows a perspective front view of a joint sealing tape according to an embodiment of the present invention, on a profile carrier, the sealing elements being a solid foam profile and a rectangular profile with rounded corners have 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 carrier, wherein the joint sealing tape has been separated at its perforation and wherein the sealing element has a foam full profile and rectangular profile with rounded corners and is enveloped by a film and itself at the bottom of the sealing element there are openings in the form of slots in the plastic film.

DETAILED DESCRIPTION OF THE INVENTION

The following terms are used in the context of the present invention:

The term “geometries” in the context of the present invention encompasses different cross-sectional types and cross-sectional shapes. This means that, in particular, the sealing elements can have different cross-sectional types and cross-sectional shapes. Cross-section types include Round profile (round cross section), oval profile (oval cross section), polygonal profile (polygonal cross section), especially 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 Full profile and hollow profile understood, the sealing elements in the full profile consisting entirely of sealing material, whereas in the hollow profile the sealing elements consist only partially 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 action of heat, for example in the event of a fire, the material expands and forms an insulating layer of flame-retardant material, that is to say intumescence. “Slowly burning foam” is understood in the context of the present invention to mean a foam that does not offer any possibility of fire spreading through the foam, is not self-inflammable and does not drip.

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

The terms “water-draining, water-conducting, water-outlet-promoting, water-passage-promoting and water-permeable” are synonymous 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 in the long term and may cause damage to the building structure.

Used in the context of the present invention, the singular forms “a”, “a” and “one” 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 stated.

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 spaced apart next to one another in the longitudinal direction of the connecting element on the connecting element, the sealing elements and the connecting element consist in one piece of an open-line, slowly burnable foam and are encased in 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.

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, the joint sealing tape being positioned in the upper region of the joint and configured to do so, to seal the joint from the outside. It has been found that the joint sealing tape according to the invention is particularly suitable for securely sealing a structural joint between two adjoining components, 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- Profile of a drywall frame, is universally applicable. In addition, it was found that openings on the underside of the sealing elements made of open-line, slowly removable foam, despite installation in an early construction phase, reduce water retention / water accumulation - caused by rainwater - in the joint sealing tape, accelerate the water penetration / leakage and ensure that the joint sealing tape dries completely.

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.

It is therefore an object of the present invention to describe the water-draining joint sealing tape. It is also an object of the present invention 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 positioned spaced apart 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-line, slow-burning Are made of 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.

The at least one opening allows that

Water retention / accumulation caused by rainwater on the The construction site if the joint sealing tape is installed early and comes into contact with water through an open facade or openings in the ceiling. When using open-cell foams, the water is often sucked up and the water escape from the surrounding film is impaired, which prevents the foam from drying quickly. Due to the at least one opening on the underside of the respective sealing element in the plastic film, the water retention - caused by rain water - in the joint sealing tape is reduced, or the water penetration / water outlet is accelerated and complete drying of the joint sealing tape is ensured.

The openings can be in the form of a hole or slot, particularly preferably in the form of an angular or round hole. In a preferred embodiment, the at least one opening has a diameter in a range from 1 to 10 mm, preferably from 3 to 7 mm, most preferably the diameter is 3 mm.

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

The openings can be made in the underside of the respective sealing element by cutting, punching, slitting or lasering. In particular, lasering is preferred because it represents a non-contact, precise process step that is used particularly in continuous production. In particular, lasering ensures that no material is removed, no chips and / or other contamination in the production line and no material loss 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, ie in the longitudinal direction of the joint sealing tape. This perforation enables easy separation (tearing apart) or alternatively pulling the two joint sealing halves apart. By tearing apart, without the use of tools, two separate joint sealing tape halves can easily be created manufacture, each having a sealing element, and which with the aid of an adhesive device, such as a separate adhesive tape or adhesive spray, and either for a one-sided seal 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 that the joint sealing tape is provided with self-adhesive devices before it is cut, so that two half tapes are formed after tearing apart, which can be installed immediately without further aids. The joint sealing tape halves can thus 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-section and cross-sectional shapes.

Preferred cross-sectional types of the sealing elements according to the present invention are full profile and hollow profile, wherein the hollow profile can be a closed or open hollow profile. Solid profile and hollow profile with a large profile wall thickness have the advantage that there is no gap automatically when two sealing elements touch. Hollow profiles can be compressed more and thus absorb 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 the rectangular profile 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 adjoin the two components after the joint sealing tape has been installed 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 invention

Joint sealing tape, the sealing elements have an oval profile. In yet another 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 full 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 full profile and an oval profile. In a still further, particularly preferred embodiment of the joint sealing tape according to the invention, the sealing elements have a full profile and a rectangular profile with rounded corners.

The geometry of the sealing elements can be prefabricated, for example by cutting, extruding or pressing a suitable sealing material. The production of such cross-sectional types and cross-sectional shapes is known to the person 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 produced by extrusion.

According to the invention, the sealing elements and the connecting element are made in one piece from an open-line, slowly-burning foam. Conventional foams such as polyethylene and polyurethane foam or cellular rubber can be mentioned as the foam material. The foam can be impregnated with an impregnate, which increases the sealing properties of the foam. In order to achieve tightness against smoke, the open-line sealing elements are covered with a plastic film.

It is advantageous if the cell sizes of the open-line, slowly removable 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. If the foam burns slowly, there is no possibility of the fire spreading through the foam. Self-ignition is impossible with the above-mentioned foam raw materials. It is advantageous that there is no dripping in the event of a fire. A slowly burning foam should be at least 20%, at least 25%, preferably at least 30%, between 20% and 60%, between 20% and 40%, preferably between 25% in a temperature range between 500 ° C and 800 ° C. to

30% of its original volume. Furthermore, a slowly burning foam should be at least 10%, at least 20%, preferably at least 30%, between 10% and 40%, between 10% and 30%, preferably between 15% in a temperature range between 500 ° C and 800 ° C. up to 20% of its original mass.

In addition, the material can contain appropriate additives if fire protection properties, such as intumescence, are desired. When exposed to heat, such as in the event of a fire, the material expands and forms an insulating layer made 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 which react with one another when exposed to heat. Such systems are known to the person skilled in the art under the term chemical intumescence and can be used according to the invention. Alternatively, the bulky, insulating layer can be formed by inflating a single compound which, without the chemical reaction between two compounds, releases gases when exposed to heat. Such systems are known to the person skilled in the art under the term physical intumescence and can also be used according to the invention. Both systems can be used individually 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-line, slowly burnable 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 over at least part of their circumference. This creates a firm connection between the connecting element and the sealing elements, so that the sealing elements are prevented from completely detaching from the connecting element even when the fastening area is subjected to heavy loads and when the sealing elements are partially detached 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. In this way, on the one hand, an optimal and permanent fastening of the sealing elements to the connecting element is achieved, which make detachment of the sealing elements from the connecting element almost impossible.

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-line intumescent polyurethane material and are completely encased in a polyethylene film.

The area of the connecting element that lies between the two sealing elements, more precisely between the two points of engagement of the connecting element with the sealing element, defines a support area that 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 facilitates the installation and in particular the positioning of the joint sealing tape on the web of the U-profile. It is preferred that the contact area of the joint sealing tape according to the invention has a width in the range from approximately 30 mm to approximately 300 mm, preferably in the range from approximately 50 to 250 mm, and more preferably in the range from approximately 90 to 155 mm. It is particularly 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, of 155 mm for a 6 inch (152 mm) rail, of 206 mm for an 8 inch (203 mm) rail or of 257 mm for a 10 inch ( 254 mm) rail. It is most preferred that the contact area of the joint sealing tape according to the invention has a width of 95 mm a 3-5 / 8 inch (92 mm) rail or 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 furthermore 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 woven fabric, a fleece or the like, preferably of 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 formed. Fastening is done by sewing, gluing or welding, preferably by welding. The dimension of the loop is dimensioned such that after the two joint sealing tape halves have been pulled apart, the desired width for an alternative profile is created by severing the perforation of the connecting element. A second profile dimension can thus be obtained by a separation step, i.e. the joint sealing tape can, for example, be used simultaneously for a 3-5 / 8 inch (92 mm) or 6 inch (152 mm) rail.

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, through the one or more widening elements, the common U-profiles with 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). This facilitates the installation and in particular the positioning of the joint sealing tape on the web of the U-profile. To facilitate the selection of 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. Due to the flexibility of the Widening element, however, it is possible to cover other profile widths of U-profiles of a drying rack 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 different profile sizes and applications, which can also be produced inexpensively in a production line and is also water-draining.

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

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

The sealing elements can be positioned on a component in one step by means of a connecting element. It is also possible for the connecting element and / or the sealing elements in turn to have means for fastening to 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, A single positioning of the sealing elements is optionally also possible, for example if the joint sealing tape is separated at the perforation and two joint sealing tape halves are obtained. The 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 before the attachment of a first component on the first component and then together with this on a second component in the usual manner, e.g. fixed by screws or nailing. The first component is preferably a frame profile of a dry construction framework, for example 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-shaped profile and the second component is a ceiling. With this arrangement, the joint sealing tape is positioned in the upper area of the joint and configured to seal the joint from the outside.

In one possibility for sealing a connection joint in drywall construction, the joint sealing tape is positioned on a U-profile before the profile is attached to the connection components, such as a ceiling, and then fastened together with this to the ceiling. In a further step, the plasterboard, one or two layers, is pressed onto the face of the sealing element, so that with double cladding, the top and bottom of the two plasterboard come into contact with the sealing element, thereby sealing the joint. In order to allow the movement of the gypsum board (s) without a gap between the sealing element and the gypsum board or the gypsum board at maximum movement, the sealing element must be compressed when installing the gypsum board (s).

The material and the thickness of the sealing element are selected so that the sealing element does not hinder the movement of the gypsum board (s) and, at the maximum joint width, the upper edge of the gypsum board (s) still touches the sealing element to ensure adequate sealing against gases. The width of the sealing element is preferably chosen so that it corresponds approximately to twice the width of a plasterboard. It has been found that adequate sealing can also be achieved if the width of the sealing element corresponds to the width of only one plasterboard. When the joint sealing tape is arranged on the U-profile and butted against the ceiling, unevenness in both components can be compensated for and simple positioning without gluing is possible. Furthermore, the joint spacing can be checked by the subsequent positioning of the gypsum plasterboard and by the selection of the sealing materials and / or the geometry of the joint sealing tape.

Alternatively, if only one gypsum plasterboard is used, it cannot be butt-fitted with the sealing element from below, but in such a way that the gypsum plasterboard partially overlaps with the sealing element. As a result, the gypsum plasterboard partially projects above the sealing element and the overlapping part of the sealing element is pressed between the U-profile and the gypsum plasterboard. It has been found that an adequate seal, in particular against gases, can also be achieved in this way. In order to improve the tightness and / or the sliding properties, the sealing tape can be laminated on one side with a layer of a material which does not hinder the movement of the gypsum board, such as a plastic film. The positioning mark for the plasterboard can easily be applied to a film, for example. With this type of installation, a large movement absorption in relation to the joint width is possible. Furthermore, this type is easier to assemble than the aforementioned single or double cladding, since the plasterboard can be easily mounted on the sealing element without measuring the distance. When using a positioning marker, the plasterboard can be installed without measuring the distance. In addition, this type of assembly does not rely on easily compressible materials for the sealing elements and therefore has a relatively large freedom in the choice of material.

In a further, particularly preferred alternative, the joint can be sealed if, in the case of double planking, the two gypsum plasterboards are mounted so that they are offset horizontally in such a way that the outer of the two gypsum plasterboards (also referred to as the outer, second gypsum plasterboard) is higher (i.e. closer to the ceiling ) as the inner plasterboard (also referred to as the inner, first plasterboard). In this embodiment, the thickness of the sealing element is chosen in accordance with the thickness of a plasterboard. The first, inner plasterboard becomes like this mounted that the upper edge touches the end faces of the sealing element, with little or no pre-compression of the sealing element is required. The second, outer gypsum board is staggered horizontally, ie it is mounted higher than the first, inner gypsum board, so that it partially covers the sealing element. The sealing element and the gypsum plasterboard should seal against each other in order to seal the gap between the outer, second gypsum plasterboard and the sealing element, in particular against gases. This results in a seal between the sealing element and the second component, for example a ceiling, a wall or a floor, and 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 of the gypsum plasterboard, this gap is completely available for recording movement.

Depending on how far the outer, second plasterboard plate covers the sealing element (size of the offset), a movement in the other direction can also be recorded. It is important that in this case an overlap between the second plasterboard and the joint sealing tape is guaranteed. The dimension of the sealing element is therefore preferably selected such that its thickness is somewhat greater than the thickness of a plasterboard and its height is somewhat 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 gypsum plasterboard, the gypsum plasterboard is pressed against the sealing element during assembly and compressed somewhat, as a result of which the gap between the sealing element and the gypsum plasterboard is reliably sealed, in particular against gases.

To make it easier to set the correct joint dimension for the outer, second plasterboard, markings can be made on the side of the joint sealing tape, a so-called positioning mark. In order to improve the tightness and / or the sliding properties, the sealing tape can be laminated on one side with a layer of a material which does not hinder the movement of the gypsum board, such as a plastic film. For example the positioning mark for the outer, second gypsum plasterboard can easily be attached to a film.

This type of installation allows maximum movement absorption in relation to the joint width. Furthermore, this type is very easy to assemble, since on the one hand the first plasterboard can be easily mounted on contact with the sealing element without measuring the distance. Secondly, in particular when using a positioning marker, the second plasterboard can also be installed without measuring the distance. In addition, this type of installation results in the greatest possible freedom in the choice of the material for the sealing elements, since these 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 applied to all types of connection joints in which one component meets another component. Accordingly, the joint sealing tape can be applied to all profiles, including closed profiles or wooden beams, which must be sealed to form a connection 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 in particular enable improved drying.

A particularly preferred application of the joint sealing tape thus 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 structure of a drywall construction element, and the second component being a floor, ceiling or wall of a Component, for example a masonry or concrete component. The profile can be any of the commonly used profiles for drywall, regardless of whether it has a slotted or unprotected web or slotted or unprotected flanges. The other components are gypsum plasterboards, which lie close to the profiles and are attached to the stud frame. In order to permit vertical movement of the plasterboard, for example in the event of an earthquake, the plasterboard is mounted so that it can move vertically at a distance from a wall, floor or ceiling. This creates a gap (also called a joint here) between the plasterboard and the wall, floor or ceiling. This joint is filled by the sealing element of the joint sealing tape, so that Sealing element seals the joint against noise 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 is described in more detail with the aid of special embodiments of the joint sealing tape. In these embodiments, the joint sealing tape is applied to the connection joints in drywall. It is clear to the person skilled in the art that the sealing tape can also be applied to other structural joints.

FIG. 1 shows a perspective front view of a preferred embodiment of a joint sealing tape 1 according to the invention on a profile carrier 7. The joint sealing tape 1 in FIG. 1 a has two sealing elements 3 a and 3 b, 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 full profile, the connecting element 2 being positioned laterally on the sealing elements 3a and 3b. Furthermore, the sealing elements 3a and 3b and the connecting element 2 are made in one piece and consist of an open-line, slowly separable foam which may contain fire protection additives. The joint sealing tape 1 is completely encased by a plastic film 4 and possibly has a perforation (P) in the longitudinal direction of the joint sealing tape 1 (not shown). At the bottom of the respective sealing element 3a and 3b there are openings 5 in the form of lasered 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 carrier, wherein the joint sealing tape has been separated at its perforation and wherein the sealing element has a foam full profile and rectangular profile with rounded corners and is enveloped by a film and itself at the bottom of the sealing element there are openings in the form of slots in the plastic film. After separation, the two joint sealing tape halves each have a sealing element 3a or 3b (not shown), a part 2a or 2b (not shown) of the connecting element 2 and are each partially covered with plastic film 4. On the underside of the sealing element 3a there are openings 5 in the form of slots made in the plastic film 4. Quality tests at the cutting edge of the floor sealing tape:

Test procedure: On the face side, the joint sealing tape is irrigated with a water flow (0.5 l / min) for at least 24 hours. Then the water absorption g / time is 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 after an observation period> 7 days is measured via drying (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 has been 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 slit-like opening sometimes shows even better results with regard to water spreading, since the path of the water is extended. This interrupts the suction effect of hydrophobic foams. The expansion via capillary forces is also interrupted. Ideally, these measures are combined with a hydrophobic foam and / or an open-cell foam with the largest possible pores. The cell sizes more or less influence the water drainage. The best results in this context were achieved with cell sizes of the open-line foam material of> 0.3 mm. The cell stabilizers used also had advantageous effects, which can influence both the cell sizes and the nature of the cell wall, as well as the cell structure and hydrophobic foam properties.

Regentetst have shown that the joint sealing tape according to the invention absorbs less water, that there is a very quick equilibrium between water absorption at the cutting edge and water discharge via the drainage openings, that the openings cause less and shorter horizontal spreading of the water, that the joint sealing tape has a significantly better drying behavior and that air contained in the joint sealing tape can very easily escape from the foam when installing the gypsum boards and ultimately, if the foam has absorbed water, it can be expressed very simply, since the water can drain off at any point. As can be seen from the above, the water-draining joint sealing tape according to the invention is particularly suitable for securely sealing a structural joint between two adjoining components in a simple manner, in particular against sound and / or smoke and possibly also against fire, and can also be used universally for different profile widths . In particular, it has been shown that the acoustic, smoke-proof and / or fire-proof sealing of connection joints in drywall, above all movement joints, ensures that, despite installation in an early construction phase, water retention / water accumulation - caused by rainwater - in the joint sealing band is reduced, the water penetration / Water discharge accelerates and a 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 different profile sizes and applications, which can also be manufactured inexpensively in a production line.

Furthermore, the application is very easy to assemble, since no additional fastening of the joint sealing tape, for example on the profile or on the ceiling, is necessary. Due to the self-centering of the joint sealing tape, fitting the joint sealing tape, for example, to a profile, is also not necessary when mounting the profile on a component. Installation is therefore extremely simple and the work involved in installing the joint sealing tape is significantly reduced. With the invention, therefore, a safe 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, is achieved. Sealing on both sides can be achieved in just one work step by providing a prefabricated sealing element.

Furthermore, it has been shown that excellent tightness can be achieved with the joint sealing tape according to the invention, since the compressibility of the Sealing elements through selection of sealing materials and / or geometry design is guaranteed without additional aids. The invention also makes it possible, by appropriate selection of the sealing materials and / or the design of the geometry, to set the correct distance from the gypsum board 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 arranged 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 against the side surfaces of the other component.

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

Claims

PATENT CLAIMS

1 . Joint sealing tape (1) for sealing a joint between a first component and a second component, with an elongated connecting element (2) and at least two sealing elements (3a, 3b), which are positioned spaced apart in the longitudinal direction of the connecting element on the connecting element (2), whereby the sealing elements (3a, 3b) and the connecting element (2) consist in one piece of an open-line, slowly burnable foam and are encased in a plastic film (4),

characterized in that there is at least one opening (5) in the plastic film (4) on an underside of the respective sealing element (3a, 3b).

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 claim 1 or 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 one of the preceding claims, characterized in that the sealing elements (3a, 3b) are fixedly connected to the connecting element (2) at least over part of their circumference.

5. joint sealing tape (1) according to any one of the preceding claims, characterized in that the sealing elements (3a, 3b) a round profile, oval profile or a

Rectangular profile with rounded corners.

6. joint sealing tape (1) according to any one of the preceding claims, characterized in that the open-line, slowly burnable foam consists of an intumescent polyurethane material.

7. joint sealing tape (1) according to any one of the preceding claims, characterized in that the sealing elements (3a, 3b) and the connecting element (2) consist of an open-line intumescent polyurethane material and are completely encased by a polyethylene film (4).

8. joint sealing tape (1) according to any one 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 claim 8 or 9, characterized in that the widening element made of a deformable material, a plastic film, a

Fabric, a fleece or the like, preferably consists of a plastic film.

1 1. Joint sealing tape (1) according to one of the preceding claims, characterized in that the at least one opening (5) has a diameter in a range from 1 to 10 mm.

12. Joint sealing tape (1) according to one of the preceding claims, characterized in that a plurality of openings (5) on the underside of the respective sealing element (3a, 3b) are arranged at a distance from one another in the range from 10 to 80 mm.

13. joint sealing tape (1) according to any one of the preceding claims, characterized in that the at least one opening (5) is a hole or a slot.

14. joint sealing tape (1) according to any one of the preceding claims, characterized in that a support area, which lies between the two points of engagement of the connecting element (2) on the sealing elements (3a, 3b), a width in the range of about 30 mm to about 300 mm, preferably in the range of about 50 to 250 mm, more preferably in the range of about 90 to 155 mm.

15. Sealing arrangement for sealing a joint between two adjacent components with at least a first component (7), a second component (9) and a joint sealing tape (1) according to one of claims 1 to 14, 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 configured to seal the joint from the outside.

16. Sealing arrangement according to claim 15, characterized in that the

Sealing elements (3a) and (3b) are arranged laterally on the first component (7).

17. Sealing arrangement according to claim 15 or 16, 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.