EP3825501B1 - Sealing tape - Google Patents

Description

The present invention relates to a sealing tape with at least one base body made of soft foam that is able to recover after compression.

Sealing tapes are generally used to seal joints between components, in particular frame profiles of windows or doors, and the building wall.

An example of such a sealing tape is from EP 1 936 246 A1 , EP 2 722 452 A1 and EP 3 513 954 A1 known. The sealing tape includes a foam carrier in which incisions are made alternately from the top and from the bottom. A film strip, an adhesive tape strip or an adhesive-like medium is inserted into each of these incisions. In one embodiment, a further V-shaped incision is made in a surface opposite to and aligned with the respective incision, into which a further film element can be inserted in order to thereby form a continuous film element. However, the production of a sealing tape in this way is very complex, particularly due to the cutting of the foam carrier from both sides at a large number of points and due to the insertion of several film elements into the foam to form a continuous barrier film.

The object of the present invention is to create a sealing tape with sealing properties that can be set easily and well, which can be produced easily and inexpensively. This object is solved by the features of claim 1.

According to the invention, the sealing tape comprises at least one base body made of soft foam that is resilient after compression, the sealing tape having an upper side, an underside and a first and a second side flank which connect the upper side and the underside, the side flanks being essentially perpendicular to a functional direction of the sealing tape extend. An adhesive layer for adhesion to a component, in particular a frame profile of a window or a door, is arranged in the area of the underside. The sealing tape has a continuous barrier structure to reduce the water vapor diffusion permeability and/or the air permeability in the functional direction, which is on the upper side of at least one of the first and second Side flank extends from up to an area between the first and the second side flank, runs there from the top in the direction of the underside of the sealing strip and then along an underside of the at least one base body from the area between the first and the second side flank to at least one first and second side flank, the barrier structure being partially formed by a barrier layer arranged on the upper side of the at least one base body, the barrier layer arranged on the upper side of the at least one base body essentially having closed-cell flexible foam or being formed from this.

In this way, a sealing tape is produced that is simple and inexpensive to produce, in particular without the need to laboriously introduce individual elements of the continuous barrier structure into incisions in a foam body. By selecting suitable materials for the barrier structure, the sealing properties of the sealing tape can be set in a targeted manner in terms of water vapor diffusion permeability and/or air permeability of the sealing tape. In this way, the functionality of the sealing tape is extended, with sensitive parts of the barrier structure being protected from damage by external influences during transport or handling. The blocking structure preferably terminates flush with the side flanks.

In one embodiment, the blocking structure extends on the upper side from the first side flank to the area between the first and the second side flank, runs there from the upper side in the direction of the underside of the sealing strip and then extends along the underside of the at least one base body of the Area between the first and the second side flank to the second side flank. As a result, a continuous blocking structure can be formed and at the same time blocking structure material can be saved, since this is only to be provided in partial areas and not over the entire width of the sealing strip on the upper side of the sealing strip and over the entire width along the underside of the sealing strip.

In a further embodiment, these advantages can also be achieved in that the blocking structure on the upper side extends from the first side flank to the area between the first and the second side flank, runs there from the upper side in the direction of the underside of the sealing strip and then extends along the underside of the at least one base body from the area between the first and the second side flank to the first side flank. The variety of possible embodiments and manufacturing variants is thereby also increased and can thus be more easily adapted to the existing requirements.

In preferred embodiments, the barrier structure extends across the entire top surface of the sealing tape. Such a sealing strip according to the invention is particularly easy to produce in an embodiment in which the blocking structure on the upper side extends from the first and the second side flank to the area between the first and the second side flank, there from the upper side in the direction of the underside of the sealing strip runs and then extends along the underside of the at least one base body from the area between the first and the second side flank to the first and the second side flank.

Embodiments are also conceivable in which the blocking structure extends on the upper side from the first and the second side flank to the area between the first and the second side flank and along the underside of the at least one base body from the area between the first and the second side edge extends only to the first or to the second side edge. Alternatively, the blocking structure on the upper side can only extend from the first or the second side flank to the area between the first and the second side flank and along the underside of the at least one base body from the area between the first and the second side flank to the first and extend to the second side edge.

The upper side of the sealing strip preferably has a profile with at least one depression such that the sealing strip in a fully expanded state has a first height in the area of the first side flank, a second height in the area of the second side flank and in the area between the first and second Side flank has a third height that is less than the first height and less than the second height. An interior space of the depression is filled exclusively with air when the sealing strip is in the fully expanded state. The barrier structure then runs from the top toward the bottom such that it extends through the region of the third height. The sealing tape formed in this way can be produced in a particularly simple and cost-effective manner. The depression filled with air has a positive effect, among other things, on the thermal insulation that can be achieved by the sealing tape.

The interior of the depression is defined herein as the space bounded by a curved section of the top of the sealing strip in the region of the depression and an imaginary extension of a flat section of the top of the sealing strip in the region of a side flank over the curved region.

The height of the sealing strip is defined in a direction between the top and the bottom of the sealing strip and perpendicular to the functional direction of the sealing strip, preferably parallel to the side flanks.

In a preferred embodiment, the first and second heights are essentially the same. This results in an identical contact pressure of the sealing tape on the building wall on both sides.

In a preferred embodiment, the third level is between 2 and 95%, more preferably between 3 and 80%, more preferably between 5 and 50% of the first level.

In all embodiments, the first height and/or the second height of the sealing tape in the fully expanded state is preferably between 5 and 150 mm, more preferably between 10 and 100 mm.

In all embodiments, the third height of the sealing tape in the fully expanded state is preferably between 1 and 142 mm, more preferably between 2 and 95 mm.

In a preferred embodiment of the sealing strip, the area of the third height is arranged essentially in the middle between the two side flanks.

Preferably the dip extends over a range of 2 to 60%, more preferably 5 to 40% of the total width of the sealing tape.

In all embodiments, the width of the sealing strip is preferably between 10 and 500 mm, more preferably between 10 and 150 mm. The width of the sealing strip is defined as the distance between the side edges of the sealing strip in a direction parallel to the functional direction.

A bottom surface of the at least one base body can be flat when the sealing strip is in the fully expanded state. In the fully expanded state of the sealing strip, the bottom surface of the at least one base body can also have a profile with a lower depression, which is aligned in the direction of the upper side of the sealing strip and is opposite the depression on the upper side in the region of the third height.

In the fully expanded state of the sealing tape, the adhesive layer can then have a hill-shaped profile and essentially follow the shape of the lower depression. In the latter case, the adhesive layer is preferably adhered to adjacent regions of the sealing tape substantially continuously along the underside of the sealing tape.

Irrespective of the profile of the bottom surface of the at least one base body, the adhesive layer runs evenly in certain embodiments when the sealing tape is in the fully expanded state. For this purpose, it can be expedient that the adhesive layer is attached to the adjacent areas of the sealing tape on its upper side only in areas adjacent to the side flanks of the sealing tape. It is conceivable that the adhesive layer is designed to be sticky towards the top only in the areas in which it comes into contact with areas of the sealing tape. The adhesive layer can, for example, be applied to the sealing tape later as a separate strip.

In all cases, the adhesive layer is preferably in the form of a double-sided adhesive tape. In general, the adhesive surface of the adhesive layer used for attachment to the component is directed downwards, ie turned away from the base bodies, and can be covered by a peel-off film or peel-off paper that can be removed before use.

The lower third height in the fully expanded state of the sealing tape is preferably achieved at least partially by permanent compression and/or fusion of the foam of the at least one base body. Although not absolutely necessary, it is then particularly preferred if the barrier structure is partially formed by a permanently compressed and/or fused section of the at least one base body. Part of the barrier structure can thus be created simply in the course of compression/merging. The compression and/or fusion of the at least one base body then not only results in the desired surface profile of the sealing tape, but an additional sealing effect is also achieved.

The embodiments described above can each include exactly one, preferably integral, base body made of soft foam. However, they can also comprise two or more base bodies which are arranged next to one another in the functional direction of the sealing strip. Irrespective of the number of base bodies, the sealing strip can also have a plurality of lower and/or upper depressions which are arranged next to one another in the functional direction.

In a preferred embodiment, the sealing tape has at least two base bodies made of soft foam, which are arranged next to one another in the functional direction of the sealing tape, with the blocking structure running at least partially in a transition area between the two adjacent base bodies from the top toward the bottom of the sealing tape.

If the sealing strip has an area with the third height, this is preferably formed in the transition area between the base bodies. The lower third height can then be achieved, for example, by permanently compressing a base body near the transition area to the adjacent base body. Alternatively, the lower third height can also be achieved by permanent compression of two adjacent base bodies near the transition area between the two base bodies.

The at least two base bodies are preferably designed as originally separate units. This makes it possible to form the two base bodies from different foam materials and consequently to influence the sealing and insulating properties of the sealing tape in a simple manner. However, the two base bodies can also be formed from the same foam.

The at least two base bodies can be attached to one another exclusively via the adhesive layer on the underside. However, the at least two base bodies are preferably additionally or alternatively permanently attached to one another in the transition area, for example by means of the barrier structure or a further adhesive layer between the base bodies. Greater stability of the sealing tape is achieved in this way. The barrier structure is then preferred partly formed by such an adhesive layer. The height of such an adhesive layer in the transition area in the fully expanded state of the sealing tape is preferably 2 to 80%, more preferably 3 to 60%, particularly preferably 5 to 50% of the first height.

In a preferred embodiment, the barrier structure is designed as a continuous, preferably one-piece barrier layer that extends on the upper side of the sealing strip, from the upper side towards the lower side of the sealing strip and along the lower side of at least one of the at least two base bodies. The continuous barrier layer preferably extends between two adjacent base bodies from the upper side in the direction of the underside of the sealing strip.

In an alternative embodiment, at least one base body has a cover that surrounds the base body on the upper side, the underside and a side facing an adjacent base body. More preferably, the encapsulation forms part or all of the barrier structure.

In an exemplary embodiment, the sealing tape includes exactly two base bodies, both of which have a corresponding cover.

If compression of the one or two bodies is desired near the transition region, this is preferably achieved using or assisted by the cladding, respectively. In some embodiments, however, there is no significant compression of the base bodies near the transition area.

In one embodiment, at least one base body has a first limb of the base body bent over by 180° relative to a second limb of the base body, with the bending point being arranged in the transition region to the other base body. The first and the second leg are preferably bonded to one another at their surfaces lying on top of one another, particularly preferably glued or laminated to one another. In this embodiment, too, the respective base body can have a covering as described above.

The foam material of such a base body is preferably compressed in itself in the area of the bending point due to the bending.

In preferred embodiments, the cover can have essentially closed-cell flexible foam or be formed from this. This provides the advantage that the flexible foam material rests particularly elastically on the building wall and thus the formation of air channels and/or water vapor diffusion channels between the sealing strip and the building wall in the functional direction is avoided. However, the cover can also be formed from other suitable materials.

Irrespective of how many base bodies the sealing tape comprises, the barrier structure is partially formed by a barrier layer arranged on the upper side of the at least one base body.

The barrier layer arranged on the upper side of the at least one base body essentially has closed-cell flexible foam or is formed from this in order to ensure sealing contact between the upper side of the sealing strip and the building wall.

In embodiments with a lower third height, it is also preferred that the barrier layer arranged on the upper side of the at least one base body is permanently compressed and/or fused in the region of the third height of the sealing strip. This is particularly advantageous if the permanent compression and/or fusion of this barrier layer takes place during the manufacturing process together with the compression and/or fusion of the material of the base body.

It is also preferred that the barrier structure is partially formed by a barrier layer arranged on the underside of the at least one base body.

This barrier layer can be formed by the adhesive layer, which is arranged in the area of the underside, or can have or be formed from essentially closed-cell soft foam.

In this case in particular, but also in other embodiments, the blocking structure can be partially formed by the adhesive layer, which is arranged in the area of the underside.

Also in the case of a lower barrier layer, it is preferred in embodiments with a lower third height that the barrier layer arranged on the underside of the at least one base body is permanently compressed and/or fused in the region of the third height of the sealing strip. This makes sense in particular if the compression and/or fusion takes place in a production step together with the compression and/or fusion of the material of the base body and/or the compression and/or fusion of a barrier layer arranged on the upper side of the sealing tape.

Preferably, the base body is compressed and/or fused, more preferably also the compression and/or fusion of the barrier layer on the upper side, more preferably also the compression and/or fusion of the barrier layer on the underside, by means of gluing, sewing, lamination or melting. In this way, the compression and/or fusion can be produced permanently without additional elements having to be provided for this purpose in the region of the depression on the upper side of the sealing strip. All of the methods of compression and/or fusion mentioned above can be carried out simultaneously for the individual superimposed layers, i.e. in one work step.

In general, the height of the permanently compressed and/or fused section of all layers involved in the fully expanded state of the sealing tape is preferably 2 to 50%, more preferably 3 to 40%, particularly preferably 5 to 30% of the first height.

For the purpose of simpler handling and transport as well as space-saving storage, the sealing tape according to the invention is preferably provided in the form of a sealing tape roll. The sealant tape in the sealant tape roll is in a compressed state in which the top and bottom of the sealant tape are substantially straight. The sealing tape is wound up to form a roll of sealing tape in such a way that the underside of the sealing tape of one turn is adjacent to the top of the sealing tape Winding is applied and the side flanks of the sealing tape form end faces of the sealing tape roll. If the upper side and/or the underside of the sealing tape has a depression in the fully expanded state, this is significantly less pronounced when the sealing tape is rolled up than in the fully expanded state.

The degree of compression of the first and/or second side flank in the compressed state on the roll of sealing tape is preferably between 3 and 50%, more preferably between 5 and 25%, compared to the fully expanded state. The degree of compression here refers to the percentage height in the compressed state compared to the height in the fully expanded state.

In an installed state, the sealing tape is arranged in a building section. The structural section comprises a wall and a component inserted into an opening in the wall, with the sealing tape being arranged in a joint between the component and the wall and sealing the joint. The side flanks of the sealing tape face the inside or the outside of the room and the sealing tape is preferably connected to the component by means of the adhesive layer in the region of the underside of the sealing tape. Compared to the uncompressed or the fully expanded state of the sealing strip, the sealing strip is partially compressed in the installed state.

It is preferred that the upper side of the sealing strip in this partially compressed installation state rests against the wall in the area of the side flanks of the sealing strip, while the upper side of the sealing strip does not rest on the wall at least in the area of the original third height or rests against the wall with a lower contact pressure than in the area of the side flanks of the sealing tape. This is primarily achieved by a lower third height of the sealing tape in the fully expanded state.

The degree of compression of the first and/or second side flank in the partially compressed installed state is preferably between 5 and 90%, more preferably between 10 and 70%, compared to the fully expanded state. The degree of compression here refers to the percentage height in the partially compressed state compared to the height in the fully expanded state.

The foam of the sealing tape can be formed from any open-cell or mixed-cell flexible foam, for example polyurethane, polyethylene, polyvinyl chloride, polyolefin or polypropylene. The density of such flexible foams is between 15 and 200 kg/m ³ .

The foams described herein can also be formed to have a skin on an outer surface. This applies both to the at least one base body made of flexible foam and to the barrier structure, which in one embodiment can have a closed-cell foam or is formed from such. Such a skin is an integral part of the respective foam, but has increased sealing properties compared to the rest of the foam and can protect it from external influences. For example, the skin can ensure that the foam is essentially waterproof. Nevertheless, the skin has the necessary flexibility to enable it to fit as well as possible against a wall surface. A corresponding skin on at least one of the top side, bottom side or side flank of the at least one base body can therefore optionally form part of the barrier structure. The skin can already be produced during the production of the respective foam. However, the skin can also only be formed during the application of further components, such as during the lamination of a closed-cell foam onto the at least one base body. A skin can be produced particularly well in the case of foams made from polyurethane.

If there are several base bodies, the individual base bodies of the sealing strip are preferably made of the same material. Alternatively, the individual base bodies can be formed from different materials.

More than two base bodies can also be arranged next to one another.

The at least one base body is preferably at least partially and preferably completely impregnated with an impregnating agent for delayed recovery. The impregnating agent preferably has an acrylate dispersion. In an advantageous embodiment, the acrylate dispersion has acrylate polymer particles dispersed in a homogeneous phase. The foam of the base body is particularly preferably impregnated with a proportion by weight of acrylate dispersion for delayed recovery in such a way that At 20°C and 50% relative humidity, the sealing tape recovers in less than 24 hours from a compression degree of the sealing tape of approx. 9% to 13% until the joint closes.

The air permeability of the flexible foam of the at least one base body is preferably between 50 and 1000 l/(m ² s), more preferably between 60 and 600 l/(m ² s) and particularly preferably between 80 and 400 l/(m ² s). All information on air permeability given in this application relates to a determination under the standard conditions of a 10 mm thick piece of foam (completely relaxed) at a measuring vacuum of 1.0 bar, test area 100 cm ² ; Frank device 21443; DIN EN ISO 9237:1995.

The flexible foam of the at least one base body preferably has a compressive strength of more than 2 kPa. The compression hardness is preferably more than 2.1 kPa, more preferably more than 2.2 kPa, particularly preferably more than 2.3 kPa. The compression hardness is preferably less than 4 kPa, preferably less than 3.8 kPa and more preferably less than 3.6 kPa. The compression hardness is a measure of the strength of the foam. The values given here are based on a compression of 40% compared to the initial height. The compression hardness is determined according to DIN EN ISO 3386:2015, the CV40 is given.

The properties and relationships explained below for the barrier layer or the encapsulation apply generally to the barrier structure described herein in its various designs.

Each barrier layer or shell comprises or is formed exclusively of a substantially closed-cell, flexible foam material. The closed-cell foam is preferably not impregnated. In the context of this application, closed-cell foam is understood as meaning a flexible foam which has an increased number of closed cells or cells with only a small opening cross section. The closed-cell foam is characterized solely by its air permeability. In the context of this application, the air permeability of a closed-cell foam is at most 50 l/(m ² s), or more preferably at most 40 l/(m ² s), or more preferably at most 30 l/(m ² s), or more preferably at most 20 l/(m ² s), measured according to DIN EN ISO 9237:1995; Test area 100 cm ² at a measuring pressure (negative pressure) of 1.0 mbar, Frank 21443 test device.

Each barrier layer or covering described in this application can also be formed from a film-like material or an adhesive, in particular from a film strip, a strip of adhesive tape or an adhesive-like liquid medium. More specifically, any barrier or cover described herein may be formed from a film of polyamide, polyurethane, polypropylene, or copolymers thereof. Likewise, each barrier layer or covering can also be formed from a dispersion adhesive, in particular an acrylate adhesive or another suitable pressure-sensitive adhesive.

In all of the embodiments, each barrier layer or casing can be formed in multiple layers, for example from any combination of several of the above-mentioned materials. It can also have a membrane layer and/or fleece layer, for example. In particular, each barrier layer or covering can be designed as a multilayer compound layer. At least one layer of at least one further material can be arranged on one or both sides of the functional layer. The one or two further layers, which in each case partially or completely cover the functional layer, can protect and carry or support it and increase the stability of the barrier layer or covering. The individual layers can each consist of the same or different material.

The layers arranged on one or both sides can in particular be nonwovens, woven fabrics or grids made of inert materials such as polyethylene, polyurethane, polypropylene, polyester, glass fibers or viscose, optionally also perforated films, in particular those made of polyethylene, polyurethane, polypropylene or polyester. The layers can generally consist of any suitable material which is in the form of layers and preferably has no higher sD values than the functional layer. The layers arranged on one or both sides can consist of a dispersion adhesive, in particular an acrylate adhesive.

Where there is an upper and lower barrier layer, these may be formed from the same material or from different materials. Any barrier or encapsulation can also consist of different sections with different materials.

All of the materials mentioned for the barrier layer or casing can be applied to the flexible foam of each base body and connected to it in a particularly simple and easily controllable manner. In addition, these materials are particularly well suited as a barrier structure material, since their sealing properties can be adjusted in a targeted manner.

Each barrier layer or envelope has a thickness of 1 μm to 5 mm, preferably 10 μm to 3 mm, particularly preferably 50 μm to 2 mm.

Each barrier layer or envelope, generally within the scope of the invention, preferably forms a continuous, non-porous and non-perforated layer. The air permeability of each barrier layer is preferably in the range of 0.01-50 l/(m ² s), more preferably in the range of 0.01-20 l/(m ² s). The air permeability is preferably ≦3-6 l/(m ² s) or preferably ≦1-2 l/(m ² s) or ≦0.2-0.5 l/(m ² s) or particularly preferably ≦0, 1-0.3 l/(m ² s) according to DIN EN ISO 9237:1995; Test area 100 cm ² at a measuring pressure (negative pressure) of 1.0 mbar, test device Frank 21443, or is no longer measurable.

Characteristic of the water vapor diffusion resistance of a sealing tape is the water vapor diffusion value in relation to an air layer thickness in meters, the so-called sD value. Preferably, each barrier layer or encapsulation has an sD value of from 0.02 m to 100 m, more preferably from 0.1 m to 25 m or from 0.2 m to 15 m (at 25% relative humidity (RH )). The sD value is tested according to DIN EN ISO 12572:2001. Regardless of this or in combination with this, each barrier layer or covering can have an sD value of 0.02 m to 10 m or 0.03 m to 6 m or 0.05 m to 2 m at 72.5% rel. Have LF according to DIN EN ISO 12572:2001. For example, the sD value at 25% rel. LF in the range from 1 to 10 m and at 72.5% rel. LF should be in the range of 0.1 to 5 m. Unless otherwise specified according to DIN EN ISO 12572:2001, the sD values refer to a temperature of 20°C.

Each barrier layer or encapsulation can also be moisture-variable, ie its water vapor diffusion resistance changes as a function of the atmospheric humidity around the barrier layer.

The following relationships apply to each sealing tape according to the invention. The overall reduction of an air flow in one direction over the entire cross section of the sealing strip section is generally decisive for the air permeability of a sealing strip section. If, for example, a plurality of blocking structure sections and base bodies are arranged alternately in the height direction or in the functional direction of the sealing strip, the reduction in the air flow through all these blocking structure sections and base bodies must be taken into account. The air permeability of the entire sealing tape in the functional direction is preferably less than 50 l/(m ² s), more preferably less than 40 l/(m ² s), more preferably less than 30 l/(m ² s), more preferably less than 20 l/(m ² s), more preferably less than 10 l/(m ² s), more preferably less than 5 l/(m ² s) under the above measurement conditions.

In one embodiment, the sealing tape also includes an additional material that is applied to a surface of the at least one base body and/or to a barrier layer or covering and/or is contained in the impregnate of the at least one base body. The additional material can give the sealing tape special properties. Additional materials include, in particular, materials for fire protection (e.g. expandable graphite, non-flammable solids, CO ₂ emitters, etc.), materials for insulation (e.g. PU foam, resins, sealants, etc.), materials for sealing against moisture (e.g. hydrophobic or hydrophilic Substances that swell on contact with water, etc.), materials for soundproofing, materials for controlled ventilation (e.g. catalytic converters, etc.), materials for hygiene (e.g. disinfectants, etc.) and/or materials to trigger the expansion of the sealing tape (e.g. propellant, heat sources, etc.) in question. The person skilled in the art can see alternatives with regard to the arrangement as well as the type and properties of the additional material, which can be used to meet the respective requirements.

Fig. 1

ist eine schematische Querschnittsansicht einer ersten Ausführungsform eines erfindungsgemäßen Dichtbands in vollständig expandiertem Zustand;

Fig. 2

ist eine schematische Perspektivansicht des zu einer Dichtbandrolle aufgewickelten Dichtbands aus Fig. 1;

Fig. 3

ist eine schematische Querschnittsansicht einer zweiten Ausführungsform des erfindungsgemäßen Dichtbands in einem vollständig expandierten Zustand;

Fig. 4

ist eine schematische Querschnittsansicht einer weiteren Ausführungsform des erfindungsgemäßen Dichtbands in einem vollständig expandierten Zustand;

Fig. 5

ist eine schematische Querschnittsansicht einer weiteren Ausführungsform des erfindungsgemäßen Dichtbands in einem vollständig expandierten Zustand;

Fig. 6

ist eine schematische Querschnittsansicht einer weiteren Ausführungsform des erfindungsgemäßen Dichtbands in einem vollständig expandierten Zustand;

Fig. 7

ist eine schematische Querschnittsansicht einer weiteren Ausführungsform des erfindungsgemäßen Dichtbands in einem vollständig expandierten Zustand;

Fig. 8

ist eine schematische Querschnittsansicht einer weiteren Ausführungsform des erfindungsgemäßen Dichtbands in einem vollständig expandierten Zustand;

Fig. 9

ist eine schematische Querschnittsansicht einer weiteren Ausführungsform des erfindungsgemäßen Dichtbands in einem vollständig expandierten Zustand;

Fig. 10

ist eine schematische Querschnittsansicht einer weiteren Ausführungsform des erfindungsgemäßen Dichtbands in einem vollständig expandierten Zustand;

Fig. 11

ist eine schematische Querschnittsansicht einer Einbausituation des Dichtbands aus Fig. 1, in der das Dichtband in einem teilkomprimierten Einbauzustand in einer Fuge zwischen einem Bauteil und einer Wand dichtend angeordnet ist; und

Fig. 12

ist eine schematische Querschnittsansicht einer Einbausituation des Dichtbands aus Fig. 8, in der das Dichtband in einem teilkomprimierten Einbauzustand in einer Fuge zwischen einem Bauteil und einer Wand dichtend angeordnet ist.

Further features and advantages of the present invention result from the following description with reference to the drawings.

1

is a schematic cross-sectional view of a first embodiment of a sealing tape according to the invention in the fully expanded state;

2

Fig. 12 is a schematic perspective view of the sealing tape wound into a sealing tape roll 1 ;

3

Fig. 12 is a schematic cross-sectional view of a second embodiment of the sealing tape of the present invention in a fully expanded state;

4

Fig. 12 is a schematic cross-sectional view of another embodiment of the sealing tape of the present invention in a fully expanded state;

figure 5

Fig. 12 is a schematic cross-sectional view of another embodiment of the sealing tape of the present invention in a fully expanded state;

6

Fig. 12 is a schematic cross-sectional view of another embodiment of the sealing tape of the present invention in a fully expanded state;

7

Fig. 12 is a schematic cross-sectional view of another embodiment of the sealing tape of the present invention in a fully expanded state;

8

Fig. 12 is a schematic cross-sectional view of another embodiment of the sealing tape of the present invention in a fully expanded state;

9

Fig. 12 is a schematic cross-sectional view of another embodiment of the sealing tape of the present invention in a fully expanded state;

10

Fig. 12 is a schematic cross-sectional view of another embodiment of the sealing tape of the present invention in a fully expanded state;

11

FIG. 12 is a schematic cross-sectional view of an installation situation of the sealing strip 1 , in which the sealing tape is arranged sealingly in a partially compressed installation state in a joint between a component and a wall; and

12

FIG. 12 is a schematic cross-sectional view of an installation situation of the sealing strip 8 , in which the sealing tape is arranged sealingly in a partially compressed installation state in a joint between a component and a wall.

This in 1 The sealing tape 2 shown in cross-section comprises a base body 4 made of soft foam, which can recover after compression and is preferably impregnated for delayed recovery. The base body 4 is originally designed in one piece, but is flatter in a central area due to permanent compression and/or fusion of the material of the base body 4 than in the areas to the right and left of it.

The sealing strip 2 shown has an upper side 6 , an underside 8 and two side flanks 10 connecting the upper side 6 and underside 8 . The side flanks 10 extend essentially perpendicularly to a functional direction F of the sealing strip, in which the sealing strip runs in the later installed state (see 11 ) is intended to seal a joint against the passage of air and/or water vapor diffusion.

In the area of the underside 8 there is an adhesive layer 12 which in the example shown runs flat and is intended for adhesion to a component 14 (see FIG 11 ), for example a frame profile of a window or a door. The adhesive layer 12 is preferably in the form of a double-sided adhesive tape and is attached to the adjacent areas of the sealing tape on its upper side. The adhesive surface of the adhesive layer 12 used for attachment to the component 14 faces downwards and is usually covered by a release film or release paper that can be removed before use. In the example shown, it is also conceivable that the adhesive layer 12 is sticky towards the top only in the areas in which it comes into contact with areas of the sealing tape.

The upper side 6 of the sealing strip 2 has a profile with a depression 16 in a middle area between the side flanks 10 of the sealing strip 2 . An interior of the depression 16 is filled exclusively with air. The upper side 6 of the sealing strip 2 is curved in the region of the depression 16 . In the area of the side flanks 10, the upper side 6 of the sealing strip 2 is essentially flat. The interior of the trough 16 is defined as the space bounded by the curved portion of the top 6 and an extension of the substantially planar portion of the top 6 across the trough 16 .

Because the depression 16 is only filled with air, the sealing strip 2 has the advantage over sealing strips with a base body with a rectangular cross section that it has greater thermal insulation due to the larger amount of air arranged in the middle region of the sealing strip 2 . All other listed embodiments of the sealing tape with at least one depression 16 on the top 6 or bottom 8 also provide this advantage.

In the area of the first (right) side flank 10 the sealing strip 2 has a first height h ₁ in the fully expanded state, which corresponds to the height h ₂ of the second (left) side flank 10 . At the apex of the depression 16, however, the sealing strip 2 has a third height h ₃ in the fully expanded state, which is less than the first height h ₁ and less than the second height h ₂ . The lower third height h ₃ in the fully expanded state of the sealing strip 2 is achieved at least in part by permanent compression and/or fusion of the material of the base body 4 .

The bottom surface of the base body 4 has a profile with a lower depression 28 which is aligned in the direction of the upper side 6 of the sealing strip 2 and is opposite the depression 16 on the upper side 6 in the region of the third height h ₃ .

This in 1 The sealing strip 2 shown also has a continuous barrier structure 18 for reducing water vapor diffusion and/or air permeability in the functional direction F of the sealing strip, which extends from the upper side 6 to the lower side 8 and at least partially through the region of the third height h ₃ .

In other embodiments, the height h ₁ can also be different from the height h ₂ as long as both heights h ₁ , h ₂ are greater than the height h ₃ .

in the in 1 In the embodiment illustrated, the barrier structure 18 comprises a plurality of subsections which together form the continuous barrier structure 18 . First of all, the sealing tape has a barrier layer 20 on the upper side 6 . This barrier layer 20 runs from the first to the second side flank 10 and covers the entire surface of the base body 4 of the sealing strip. The barrier layer 20 is preferably glued to the base body 4 or laminated to it.

The sealing strip 2 also has a further barrier layer 22 in the area of the underside of the base body 4, which also runs from the first to the second side flank 10 and preferably covers the base body 4 continuously. The barrier layer 22 is preferably permanently bonded or laminated to the base body 4 . The barrier layers 20, 22 thus form symmetrically designed boundaries of the base body 4 on its upper side and lower side.

A third component of the barrier structure 18 is the permanently compressed and/or fused section 24 of the sealing tape in the area of the depression 16. In this area are the barrier layer 20 arranged on the upper side 6, the barrier layer 22 arranged on the underside 8 and the material of the base body 4 are jointly compressed and/or fused, whereby the lower third height h ₃ of the sealing strip is achieved. Due to the compression and/or fusion of the various layers in this area, a sealing bond is formed between the upper barrier layer 20 and the lower barrier layer 22 .

The compression and/or fusion can be achieved in this area, for example, by gluing after compression, by sewing, by lamination with simultaneous compression, or by melting (with or without compression). In any case, the higher compression and/or the higher material density in the compressed/fused area ensures that the airtightness of the sealing tape and the water vapor diffusion resistance in the functional direction F are significantly increased in this section 24 . The material of the base body 4 can be so strongly compressed or fused with the materials of the barrier layers 20, 22 that it can no longer be visually distinguished from the barrier layers 20, 22.

The continuous barrier structure 18, formed from upper barrier layer 20, compressed/fused section 24 and lower barrier layer 22 thus extends (apart from the adhesive layer 12) over the entire height of the sealing tape and thus provides a gapless, over the entire height to a desired Measured sealing against air passage and/or water vapor diffusion in functional direction F.

In this embodiment, the locking structure 18 extends on the upper side 6 of the sealing strip 2 from the first and the second side flank 10 to the area between the first and the second side flank 10, runs there from the top 6 in the direction of the underside 8 of the sealing strip 2 and then extends along the underside of the base body 4 from the area between the first and the second side flank 10 to the first and the second side flank 10 .

In this way, a sealing strip 2 with a continuous barrier structure 18 can be easily produced without a number of components of the same having to be laboriously introduced into incisions in the sealing strip.

In the illustrated embodiment, it is also conceivable for the adhesive layer 12 not to be continuous over the entire width of the sealing strip 2, but only to be provided in strips in the areas in which it is to be bonded to the other elements of the sealing strip.

In 2 the sealing tape 2 is off 1 shown in a configuration wound into a roll of sealing tape 26 . The sealing strip 2 is in a (partially) compressed state in which the upper side 6 and the lower side 8 of the sealing strip run essentially in a straight line or the depression 16 is significantly less pronounced than in the fully expanded state. For all other embodiments of the sealing tape according to the invention, the configuration as a sealing tape roll 26 is also preferred and the same relationship applies.

This in 3 Sealing tape 2 shown differs from the sealing tape 1 in that the adhesive layer 12 fully adheres to the lower barrier layer 22 and thus has a profile with a mound shape, which corresponds to the profile of the bottom surface of the base body 4 with the lower depression 28 .

in the in 3 In the embodiment shown, only the upper barrier layer 20, the base body 4 and the lower barrier layer 22 are compressed or fused together in the region of the compressed/fused section 24, while the adhesive layer 12 is subsequently applied to the sealing tape 2 as a separate strip. It is also conceivable that the adhesive layer 12 becomes part of the compressed/fused section 24 and is likewise compressed and/or fused with the other components of the sealing tape 2 present in this area. In In this case, the compression/fusion takes place only after the adhesive layer 12 has been applied.

The adhesive layer 12 can additionally contribute to the barrier structure 18 . It is also conceivable that in the embodiment according to 3 the bottom barrier layer 22 is omitted and the adhesive layer 12 takes over the function of the bottom barrier layer. In this case, it must be ensured that the adhesive layer 12 has properties that reduce the passage of air or water vapor diffusion to the desired extent. In this case, the barrier structure 18 would be formed by the top barrier layer 20, the compressed/fused portion 24 and the adhesive layer 12.

Also in the embodiment after 3 the blocking structure 18 on the top side 6 of the sealing strip 2 extends from the first and the second side flank 10 to the area between the first and the second side flank 10, runs there from the top side 6 in the direction of the underside 8 of the sealing strip 2 and extends then along the underside of the base body 4 from the area between the first and the second side flank 10 to the first and the second side flank 10.

In the 4 illustrated embodiment of the sealing tape 2 according to the invention differs from the embodiment 1 in that the upper barrier layer 20 extends only from one side flank 10 to the compressed/fused portion 24, and also that the lower barrier layer 22 extends only from the compressed/fused portion 24 to one side flank 10, preferably to the other side flank 10 of the sealing tape than the upper one Barrier layer 20 runs. This configuration is sufficient to form a continuous barrier structure 18 composed of upper barrier layer 20 , compressed/fused portion 24 and lower barrier layer 22 .

Expressed in general terms, the blocking structure 18 in the illustrated embodiment extends on the top 6 from the (left) second side flank 10 to the area between the first and the second side flank 10, where it runs from the top 6 in the direction of the underside 8 of the sealing strip 2 and then extends along the underside of the at least one base body 4 from the area between the first and the second side flank 10 to the (right) first side flank 10. Of course, the blocking structure 18 can also extend in a corresponding manner on the upper side 6 from the first side flank 10 and along the underside of the at least one base body 4 to the second side flank 10 .

Alternatively, the locking structure 18 extends on the top 6 from the first side flank 10 to the area between the first and second side flank 10, runs there from the top 6 in the direction of the underside 8 of the sealing strip and then extends along the underside of the at least a base body 4 from the area between the first and the second side flank 10 to the first side flank 10.

Because these components cover the entire height of the sealing strip 2 over its cross section, a reduction in air permeability or water vapor diffusion in the functional direction F of the sealing strip that can be adjusted to a desired extent is ensured.

It is also possible for only one of the two barrier layers 20, 22 to extend between a side flank 10 and the section 24, and for the other of the two barrier layers 20, 22 to extend completely between the two side flanks 10.

In the figure 5 illustrated embodiment of the sealing tape 2 according to the invention differs from the embodiment 1 in that two compressed/fused portions 24 are provided across the width of the sealing tape 2 . Arranged between these sections 24 is an area of the base body 4 that is essentially oval in cross section and is preferably surrounded by the barrier layers 20, 22 on the upper side and underside.

It is also possible to have more than two compressed/fused portions 24 across the width of the sealing tape. It is also conceivable in all of the embodiments to arrange the compressed/fused section(s) 24 asymmetrically across the width of the sealing strip.

The barrier structure 18 is used in the embodiment shown in FIG figure 5 formed by top barrier layer 20, bottom barrier layer 22 (which may optionally be replaced by adhesive layer 12) and portion 24. Alternatively, the locking structure 18 in such a shaped sealing tape 2 analogous to 4 be formed from only portions of the barrier layers 20,22.

In one embodiment of the sealing strip 2 according to the invention, one bottom surface of the base body 4 can be compared to the embodiment according to FIG figure 5 also be essentially planar and be attached to the adhesive layer 12 over the entire surface. In addition, the shape of the depressions 16 may be formed into a substantially V-shape, and the compressed/fused portions 24 are located not at a middle portion of the sealing tape 2 with respect to the height of the sealing tape but at a lower portion of the sealing tape. Such modifications of the sink 16 or the compressed/fused section 24 are also conceivable in all other embodiments that have been described above. Likewise, the shape of the depressions 16 in this embodiment of the form in the other embodiments, for example after 1 and 3 to 5, correspond. Also, in this example, the bottom barrier layer 22 may be omitted if the adhesive layer 12 performs its function.

In the 6 The illustrated embodiment of the sealing tape 2 according to the invention comprises two base bodies 4 made of soft foam, which can recover after compression, which are preferably impregnated for delayed recovery and are arranged next to one another when viewed in the functional direction F of the sealing tape 2 .

The sealing strip 2 has an upper side 6 , an underside 8 and two side flanks 10 connecting the upper side 6 and underside 8 . The side flanks 10 extend essentially perpendicularly to a functional direction F of the sealing strip 2, in which the sealing strip 2 is intended to seal a joint against the passage of air and/or water vapor diffusion in the later installed state.

In the area of the underside 8 there is an adhesive layer 12 which in the example shown runs flat and is intended for adhesion to a component 14 (see FIG 12 ), for example a frame profile of a window or a door. The adhesive layer 12 is preferably in the form of a double-sided adhesive tape and is attached to the adjacent areas of the sealing tape on its upper side. The adhesive surface of the adhesive layer 12 used for attachment to the component 14 faces downwards and is usually covered by a release film or release paper that can be removed before use. In the illustrated For example, it is also conceivable that the adhesive layer 12 is sticky only in the areas in which it comes into contact with areas of the sealing tape.

The upper side 6 of the sealing strip 2 has a profile with a depression 16 in a middle area of the sealing strip 2 . An interior of the depression 16 is filled exclusively with air. In the area of the first (right) side flank 10 the sealing strip 2 has a first height h ₁ in the fully expanded state, which corresponds to the height h ₂ of the second (left) side flank 10 . At the apex of the depression 16, however, the sealing strip 2 has a third height h ₃ in the fully expanded state, which is less than the first height h ₁ and less than the second height h ₂ .

The area with the third height h ₃ is formed in a transition area 36 between the two base bodies 4 . In the example shown, the two base bodies 4 are each created by bending a shaped body that is actually rectangular in cross section, with a first, upper leg 30 of the base body 4 being bent by 180° relative to a second, lower leg 32 of the base body 4. The bending point is arranged in the transition area 36 to the respective other base body 4 and the foam material of the base body 4 is compressed in itself in the area of the bending point due to the bending.

The first and second legs 30, 32 can be adhered to one another at their abutting surfaces, preferably glued or laminated to one another. This results in a substantially horizontal adhesive surface between the legs 30, 32.

Each of the two base bodies 4 has a cover 34 which surrounds it on the top, the bottom and the side facing the other base body 4 . Depending on the rigidity of this covering 34, the covering 34 can in each case additionally contribute to the compression of the material of the base body 4 in the area of the bending point. The adhesive layer 12 is firmly attached to both wrappers 34 on the underside thereof.

It is preferred if the enclosure 34 forms a barrier structure 18 which satisfies the same requirements as set out above 1 barrier structure 18 described. Each enclosure 34 forms a continuous blocking structure 18 which, viewed across the width of the sealing strip 2, covers the entire height of the sealing strip 2 and can thus reduce the air permeability or the passage of water vapor in the functional direction F of the sealing strip to the desired extent. The locking structure 18 thus runs on the upper side 6 at least from one of the first and second side flanks 10, through the transition region 36 and along the underside of the same base body back to the same of the first and second side flanks 10.

The two adjacent base bodies 4 are permanently attached to one another in the transition region 36, e.g. by means of an adhesive layer 37, in the present case with the respective sections of the casings 34 being interposed. The casings 34 of the two base bodies 4 can also be directly fused together. Such an adhesive layer 37 or adhesion of the covers may also contribute to the barrier structure 18.

As a result, a substantially V-shaped depression 16 is formed in the area of the upper side 6 of the sealing strip, and a further, substantially V-shaped depression 28 opposite the depression 16 in the region of the lower third height is also formed in the area of the underside 8 of the sealing strip h ₃ formed.

In the 7 illustrated embodiment of the sealing tape 2 according to the invention differs from the embodiment 6 is that only one of the base body 4 one of the two base body 4 from 6 is equivalent to. The other base body 4 is also a base body 4 made of flexible foam, but with a blank that is rectangular in cross section. The blank can also have a different geometric shape.

In this case, the continuous blocking structure 18 is merely formed by the casing 34 of the first base body 4 . In the transition area 36, the two base bodies 4 are merely in contact with one another, but they can also be attached to one another, as shown in FIG 6 is described.

The height of the two base bodies 4 is preferably identical, but can also differ. A lower third height h ₃ than in the area of each of the two side flanks 10 of the sealing strip 2 should preferably be provided in the transition area 36 . The order of the two base bodies 4 with regard to the functional direction F can be in 7 also be vice versa. It is also conceivable that on the side of the free side flank of the rectangular base body 4 another base body 4 with cover 34 is preferably mirror-inverted to the one in 7 Base body 4 already shown is arranged.

The embodiment of the sealing strip 2 according to 8 differs from the embodiment 6 is that the two base bodies 4 each consist of a blank with a rectangular cross section and are not bent over. The compression of the two base bodies 4 near the transition area 36 is thus brought about exclusively by the attachment of the two coverings 34 in the transition region 36 and the rigidity of the covering 34 . To form the depression 16 and possibly the depression 28, it is therefore essential that the adhesive surface 37 between the coverings 34 has a lower height than the first or second height h ₁ , h ₂ on the side flanks 10 of the sealing strip. Because of the rigidity of the casing 34, each base body 4 is then compressed more strongly near the transition area 36 compared to its complete expansion in the area of the side flanks 10. In this embodiment, too, the barrier structure 18 is formed by at least one cover 34, possibly also by the adhesive layer 37.

It is also possible to use one as in 8 designed base body 4 to combine with a conventional, rectangular in cross-section base body 4 without casing 34.

The embodiment of the sealing tape 2 after 9 differs from the embodiment 7 is that the two base bodies 4 each consist of a blank with a rectangular cross section and are not bent over. One base body 4 (the left in 9 ) corresponds essentially to one of the two base bodies 4 8 and includes an enclosure 34 that at least partially forms the barrier structure 18 . The other base body 4 (the right one in 9 ) essentially corresponds to the rectangular cross-section cut made of flexible foam 7 , but can also have a different geometric shape. The two base bodies 4 can be permanently attached to one another in the transition area 36, for example by an adhesive layer 37. The two base bodies 4 can also be connected to one another only by means of the adhesive layer 12 in the region of their respective underside.

In contrast to 8 If the cover 34 or its attachment to the other base body 4 causes no significant compression of the base body 4 in or near the transition area 36 in this case. The result of this is that the sealing strip 2 in its installed state rests against a component 14 and the wall 40 over the entire width as far as possible over the entire surface. The contact pressure of the sealing strip 2 against the wall is then essentially constant, viewed across the width of the sealing strip 2 .

In order to increase the sealing effect of the sealing strip 2, however, this can also include any desired compression of at least the covered base body 4 in this embodiment, as described for the other embodiments, e.g. by means of the cover 34.

In the 10 illustrated embodiment of a sealing tape 2 according to the invention comprises two essentially rectangular base body 4 made of soft foam. In this case, the barrier structure 18 is designed as a continuous, preferably one-piece barrier layer 23, which extends on the top side 6 of the sealing strip 2, from the top side 6 in the direction of the underside 8 of the sealing strip 2 and along the underside of at least one of the two base bodies 4 . Here the barrier structure 18 or the barrier layer 23 extends from the (left) second side flank 10 along the top 6 of the sealing strip 2, in the transition area 36 along the mutually facing side surfaces of the base body 4 in the direction of the underside 8 of the sealing strip 2 and finally along the underside of a base body 4 towards the (right) first side edge. Of course, the blocking structure 18 can also extend on the top side 6 starting from the first side flank 10 and along the underside towards the second side flank 10 .

The continuous barrier layer 23 can be formed partially by a barrier layer 20 on the upper side 6 of the sealing tape 2 and partially by a barrier layer 22 on the underside of at least one base body 4, as described with reference to FIG 1 and 3 to 5 are described. The barrier layers 20, 22 can either only extend from one of the two side flanks 10 to the transition region 36 or can extend over the entire width of the sealing strip 2.

A further barrier layer section 25 is provided in the transition area 36, which connects the two barrier layers 20, 22 to one another. The barrier layer section 25 preferably runs essentially parallel to the side flanks 10 along the mutually facing side surfaces of the base bodies 4 and can be attached to at least one of the two base bodies, preferably to both base bodies 4 .

The barrier face portion 25 may be formed integrally with the barrier layers 20, 22 and preferably of the same material as them. However, the barrier layer section 25 can also be formed from a different material, such as a foil, an adhesive layer or by fusing the foam of one of the two base bodies 4 on the corresponding side surface. The barrier layers 20, 22 and the barrier layer portion 25 should then be sealed together.

In general, continuous barrier layer 23 and barrier portion 25 may have the same properties and materials as described herein for barrier layers 20, 22 and cladding 34 within the scope of the invention.

The two base bodies 4 can be connected to one another by means of the barrier layer section 25, e.g. glued or laminated to one another. Alternatively, the base bodies 4 can also only loosely hold the barrier layer section 25 between them and are only firmly connected to one another by means of the adhesive layer 12 . Here, too, the adhesive layer 12 can assume the function of the lower barrier layer 22, which can accordingly be omitted.

In the embodiments according to Figures 6 to 10 more than two base bodies 4 can also be arranged next to one another and connected to one another.

There are many possibilities for combining or modifying the individual embodiments. All such combinations are intended to be disclosed herein, insofar as they come within the scope of the appended claims.

In 11 is an installation situation of the sealing strip 2 from 1 shown. Here, in a structural section 42, the sealing tape 2 is inserted into a joint 38 between a component 14, in particular a frame profile of a window or a door, and a wall 40 in arranged in a partially compressed installation state and seals the joint 38 . As indicated by the dashed lines, the top 6 of the sealing strip 2 rests against the wall 40 in the area of the side flanks 10 of the sealing strip, while the top 6 at least in the area of the original third height h ₃ and in adjacent areas (between the dashed lines) does not rest against the wall 40. However, it is also conceivable that the third height h ₃ is significantly larger and the upper side 6 of the sealing strip 2 thus also rests against the wall 40 in the area of the original third height h ₃ , but then with a lower contact pressure than in the area of the side flanks 10 of the sealing tape.

In 12 is a corresponding installation situation of the sealing strip 2 from 8 shown. In this case, the sealing strip 2 in the building section 42 is compressed to such an extent between the component 14 and the wall 40 that the upper side 6 also rests against the wall 40 in the area of the original third height h ₃ and in adjacent areas (between the dashed lines). there, however, with a lower contact pressure than in the area of the side flanks 10 of the sealing strip.

Are the base bodies 4 of the in 12 shown sealing tape 2, however, as the encased base body 4 after 9 formed or instead of the sealing strip 2 shown, the sealing strip 2 after 9 used, the upper side 6 of the sealing strip lies against the wall 40 essentially over the entire width of the sealing strip 2 . The contact pressure of the sealing strip 2 against the wall is then essentially constant over the entire width. A deviation can occur at most in the transition area 36, but is negligibly small due to the small dimensions of an adhesive layer 36 or similar connecting means.

Claims (12)

1. Sealing tape (2) which has at least one main body (4) from a soft foam which is capable of restoring after compression,

   wherein the sealing tape has an upper side (6), a lower side (8), and a first and a second side flank (10) which connect the upper side (6) and the lower side (8), wherein the side flanks (10) extend so as to be substantially perpendicular to a functional direction (F) of the sealing tape (2),

   wherein an adhesive layer (12) for adhering to a component (14), in particular a frame profile of a window or a door, is disposed in the region of the lower side (8), and

   wherein the sealing tape (2) has a continuous barrier structure (18) for reducing the water vapour diffusion permeability and/or the air permeability in the functional direction (F), said continuous barrier structure (18) on the upper side (6) extending from at least one of the first and the second side flank (10) to a region between the first and the second side flank (10), there runs from the upper side (6) in the direction of the lower side (8) of the sealing tape (2), and subsequently extends along a lower side of the at least one main body (4), from the region between the first and the second side flank (10) to at least one of the first and the second side flank (10), wherein the barrier structure (18) is partially formed by a barrier layer (20) disposed on the upper side (6) of the at least one main body (4),

   characterized in that

   the barrier layer (20) disposed on the upper side (6) of the at least one main body (4) comprises substantially closed-cell soft foam or is formed from the latter.
2. Sealing tape (2) according to Claim 1, characterized in that the barrier structure (18) on the upper side (6) extends from the first side flank (10) to the region between the first and the second side flank (10), there runs from the upper side (6) in the direction of the lower side (8) of the sealing tape (2), and subsequently extends along the lower side of the at least one main body (4), from the region between the first and the second side flank (10) to the second side flank (10).
3. Sealing tape (2) according to Claim 1, characterized in that the barrier structure (18) on the upper side (6) extends from the first side flank (10) to the region between the first and the second side flank (10), there runs from the upper side (6) in the direction of the lower side (8) of the sealing tape (2), and subsequently extends along the lower side of the at least one main body (4), from the region between the first and the second side flank (10) to the first side flank (10).
4. Sealing tape (2) according to Claim 1, characterized in that the barrier structure (18) on the upper side (6) extends from the first and the second side flank (10) to the region between the first and the second side flank (10), there runs from the upper side (6) in the direction of the lower side (8) of the sealing tape (2), and subsequently extends along the lower side of the at least one main body (4), from the region between the first and the second side flank (10) to the first and to the second side flank (10).
5. Sealing tape (2) according to one of the preceding claims, characterized in that the upper side (6) of the sealing tape (2) has a profile having at least one depression (16) in such manner that the sealing tape (2) in a completely expanded state in the region of the first side flank (10) has a first height (h₁), in the region of the second side flank (10) has a second height (h₂), and in the region between the first and the second side flank (10) has a third height (h₃) which is less than the first height (h₁) and less than the second height (h₂), and wherein an interior space of the depression (16) in the completely expanded state of the sealing tape (2) is filled exclusively with air,
   wherein the barrier structure (18) runs from the upper side (6) in the direction of the lower side (8) in such a manner that said barrier structure (18) extends through the region of the third height (h₃) .
6. Sealing tape (2) according to Claim 5, characterized in that the lesser third height (h₃) in the completely expanded state of the sealing tape (2) is at least partially achieved by a permanent compression and/or fusion of the foam of the at least one main body (4); and
   the barrier structure (18) is partially formed by a permanently compressed and/or fused portion (24) of the at least one main body (4).
7. Sealing tape (2) according to one of the preceding claims, characterized in that the sealing tape (2) has two main bodies (4) which in the functional direction (F) of the sealing tape (2) are disposed next to one another, wherein the barrier structure (18) runs at least partially in a transition region (36) between the two neighbouring main bodies (4), from the upper side (6) in the direction of the lower side (8) of the sealing tape (2).
8. Sealing tape (2) according to Claim 7, characterized in that the two main bodies (4) are designed as originally separate units which in the transition region (36) are bonded to one another by means of the barrier structure (18).
9. Sealing tape (2) according to Claim 7 or 8, characterized in that the barrier structure (18) is configured as a continuous barrier layer (23) which on the upper side (6) of the sealing tape (2) extends from the upper side (6) in the direction of the lower side (8) of the sealing tape (2) and along the lower side of at least one of the at least two main bodies (4).
10. Sealing tape (2) according to one of the preceding claims, characterized in that the barrier structure (18) is partially formed by a barrier layer (22) disposed on the lower side of the at least one main body (4).
11. Sealing tape (2) according to one of the preceding claims, characterized in that the barrier structure (18) is partially formed by the adhesive layer (12).
12. Sealing tape roll (26) having a sealing tape (2), according to one of the preceding claims, which is wound-up so as to form a roll, wherein the sealing tape (2) in the sealing tape roll (26) is present in a compressed state in which the upper side (6) and the lower side (8) of the sealing tape (2) run in a substantially rectilinear manner.

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